summaryrefslogtreecommitdiffstats
path: root/net/tipc
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/Makefile4
-rw-r--r--net/tipc/bcast.c244
-rw-r--r--net/tipc/bcast.h6
-rw-r--r--net/tipc/bearer.c447
-rw-r--r--net/tipc/bearer.h16
-rw-r--r--net/tipc/config.c4
-rw-r--r--net/tipc/core.c9
-rw-r--r--net/tipc/core.h8
-rw-r--r--net/tipc/link.c1084
-rw-r--r--net/tipc/link.h62
-rw-r--r--net/tipc/msg.c159
-rw-r--r--net/tipc/msg.h21
-rw-r--r--net/tipc/name_distr.c303
-rw-r--r--net/tipc/name_distr.h2
-rw-r--r--net/tipc/name_table.c382
-rw-r--r--net/tipc/name_table.h30
-rw-r--r--net/tipc/net.c109
-rw-r--r--net/tipc/net.h8
-rw-r--r--net/tipc/netlink.c133
-rw-r--r--net/tipc/netlink.h (renamed from net/tipc/ref.h)22
-rw-r--r--net/tipc/node.c237
-rw-r--r--net/tipc/node.h29
-rw-r--r--net/tipc/node_subscr.c96
-rw-r--r--net/tipc/node_subscr.h63
-rw-r--r--net/tipc/port.c514
-rw-r--r--net/tipc/port.h190
-rw-r--r--net/tipc/ref.c266
-rw-r--r--net/tipc/socket.c1271
-rw-r--r--net/tipc/socket.h58
-rw-r--r--net/tipc/subscr.c2
-rw-r--r--net/tipc/sysctl.c7
31 files changed, 3563 insertions, 2223 deletions
diff --git a/net/tipc/Makefile b/net/tipc/Makefile
index a080c66d819..333e4592772 100644
--- a/net/tipc/Makefile
+++ b/net/tipc/Makefile
@@ -7,8 +7,8 @@ obj-$(CONFIG_TIPC) := tipc.o
tipc-y += addr.o bcast.o bearer.o config.o \
core.o link.o discover.o msg.o \
name_distr.o subscr.o name_table.o net.o \
- netlink.o node.o node_subscr.o port.o ref.o \
- socket.o log.o eth_media.o server.o
+ netlink.o node.o socket.o log.o eth_media.o \
+ server.o
tipc-$(CONFIG_TIPC_MEDIA_IB) += ib_media.o
tipc-$(CONFIG_SYSCTL) += sysctl.o
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index dd13bfa0933..96ceefeb9da 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -37,7 +37,6 @@
#include "core.h"
#include "link.h"
-#include "port.h"
#include "socket.h"
#include "msg.h"
#include "bcast.h"
@@ -218,12 +217,27 @@ struct tipc_node *tipc_bclink_retransmit_to(void)
*/
static void bclink_retransmit_pkt(u32 after, u32 to)
{
- struct sk_buff *buf;
+ struct sk_buff *skb;
+
+ skb_queue_walk(&bcl->outqueue, skb) {
+ if (more(buf_seqno(skb), after))
+ break;
+ }
+ tipc_link_retransmit(bcl, skb, mod(to - after));
+}
+
+/**
+ * tipc_bclink_wakeup_users - wake up pending users
+ *
+ * Called with no locks taken
+ */
+void tipc_bclink_wakeup_users(void)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&bclink->link.waiting_sks)))
+ tipc_sk_rcv(skb);
- buf = bcl->first_out;
- while (buf && less_eq(buf_seqno(buf), after))
- buf = buf->next;
- tipc_link_retransmit(bcl, buf, mod(to - after));
}
/**
@@ -235,14 +249,14 @@ static void bclink_retransmit_pkt(u32 after, u32 to)
*/
void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
{
- struct sk_buff *crs;
+ struct sk_buff *skb, *tmp;
struct sk_buff *next;
unsigned int released = 0;
tipc_bclink_lock();
/* Bail out if tx queue is empty (no clean up is required) */
- crs = bcl->first_out;
- if (!crs)
+ skb = skb_peek(&bcl->outqueue);
+ if (!skb)
goto exit;
/* Determine which messages need to be acknowledged */
@@ -261,47 +275,48 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
* Bail out if specified sequence number does not correspond
* to a message that has been sent and not yet acknowledged
*/
- if (less(acked, buf_seqno(crs)) ||
+ if (less(acked, buf_seqno(skb)) ||
less(bcl->fsm_msg_cnt, acked) ||
less_eq(acked, n_ptr->bclink.acked))
goto exit;
}
/* Skip over packets that node has previously acknowledged */
- while (crs && less_eq(buf_seqno(crs), n_ptr->bclink.acked))
- crs = crs->next;
+ skb_queue_walk(&bcl->outqueue, skb) {
+ if (more(buf_seqno(skb), n_ptr->bclink.acked))
+ break;
+ }
/* Update packets that node is now acknowledging */
+ skb_queue_walk_from_safe(&bcl->outqueue, skb, tmp) {
+ if (more(buf_seqno(skb), acked))
+ break;
- while (crs && less_eq(buf_seqno(crs), acked)) {
- next = crs->next;
-
- if (crs != bcl->next_out)
- bcbuf_decr_acks(crs);
- else {
- bcbuf_set_acks(crs, 0);
+ next = tipc_skb_queue_next(&bcl->outqueue, skb);
+ if (skb != bcl->next_out) {
+ bcbuf_decr_acks(skb);
+ } else {
+ bcbuf_set_acks(skb, 0);
bcl->next_out = next;
bclink_set_last_sent();
}
- if (bcbuf_acks(crs) == 0) {
- bcl->first_out = next;
- bcl->out_queue_size--;
- kfree_skb(crs);
+ if (bcbuf_acks(skb) == 0) {
+ __skb_unlink(skb, &bcl->outqueue);
+ kfree_skb(skb);
released = 1;
}
- crs = next;
}
n_ptr->bclink.acked = acked;
/* Try resolving broadcast link congestion, if necessary */
-
if (unlikely(bcl->next_out)) {
- tipc_link_push_queue(bcl);
+ tipc_link_push_packets(bcl);
bclink_set_last_sent();
}
- if (unlikely(released && !list_empty(&bcl->waiting_ports)))
- tipc_link_wakeup_ports(bcl, 0);
+ if (unlikely(released && !skb_queue_empty(&bcl->waiting_sks)))
+ n_ptr->action_flags |= TIPC_WAKEUP_BCAST_USERS;
+
exit:
tipc_bclink_unlock();
}
@@ -316,19 +331,16 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
struct sk_buff *buf;
/* Ignore "stale" link state info */
-
if (less_eq(last_sent, n_ptr->bclink.last_in))
return;
/* Update link synchronization state; quit if in sync */
-
bclink_update_last_sent(n_ptr, last_sent);
if (n_ptr->bclink.last_sent == n_ptr->bclink.last_in)
return;
/* Update out-of-sync state; quit if loss is still unconfirmed */
-
if ((++n_ptr->bclink.oos_state) == 1) {
if (n_ptr->bclink.deferred_size < (TIPC_MIN_LINK_WIN / 2))
return;
@@ -336,15 +348,15 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
}
/* Don't NACK if one has been recently sent (or seen) */
-
if (n_ptr->bclink.oos_state & 0x1)
return;
/* Send NACK */
-
buf = tipc_buf_acquire(INT_H_SIZE);
if (buf) {
struct tipc_msg *msg = buf_msg(buf);
+ struct sk_buff *skb = skb_peek(&n_ptr->bclink.deferred_queue);
+ u32 to = skb ? buf_seqno(skb) - 1 : n_ptr->bclink.last_sent;
tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG,
INT_H_SIZE, n_ptr->addr);
@@ -352,9 +364,7 @@ void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent)
msg_set_mc_netid(msg, tipc_net_id);
msg_set_bcast_ack(msg, n_ptr->bclink.last_in);
msg_set_bcgap_after(msg, n_ptr->bclink.last_in);
- msg_set_bcgap_to(msg, n_ptr->bclink.deferred_head
- ? buf_seqno(n_ptr->bclink.deferred_head) - 1
- : n_ptr->bclink.last_sent);
+ msg_set_bcgap_to(msg, to);
tipc_bclink_lock();
tipc_bearer_send(MAX_BEARERS, buf, NULL);
@@ -391,20 +401,20 @@ static void bclink_peek_nack(struct tipc_msg *msg)
/* tipc_bclink_xmit - broadcast buffer chain to all nodes in cluster
* and to identified node local sockets
- * @buf: chain of buffers containing message
+ * @list: chain of buffers containing message
* Consumes the buffer chain, except when returning -ELINKCONG
* Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
*/
-int tipc_bclink_xmit(struct sk_buff *buf)
+int tipc_bclink_xmit(struct sk_buff_head *list)
{
int rc = 0;
int bc = 0;
- struct sk_buff *clbuf;
+ struct sk_buff *skb;
/* Prepare clone of message for local node */
- clbuf = tipc_msg_reassemble(buf);
- if (unlikely(!clbuf)) {
- kfree_skb_list(buf);
+ skb = tipc_msg_reassemble(list);
+ if (unlikely(!skb)) {
+ __skb_queue_purge(list);
return -EHOSTUNREACH;
}
@@ -412,11 +422,13 @@ int tipc_bclink_xmit(struct sk_buff *buf)
if (likely(bclink)) {
tipc_bclink_lock();
if (likely(bclink->bcast_nodes.count)) {
- rc = __tipc_link_xmit(bcl, buf);
+ rc = __tipc_link_xmit(bcl, list);
if (likely(!rc)) {
+ u32 len = skb_queue_len(&bcl->outqueue);
+
bclink_set_last_sent();
bcl->stats.queue_sz_counts++;
- bcl->stats.accu_queue_sz += bcl->out_queue_size;
+ bcl->stats.accu_queue_sz += len;
}
bc = 1;
}
@@ -424,13 +436,13 @@ int tipc_bclink_xmit(struct sk_buff *buf)
}
if (unlikely(!bc))
- kfree_skb_list(buf);
+ __skb_queue_purge(list);
/* Deliver message clone */
if (likely(!rc))
- tipc_sk_mcast_rcv(clbuf);
+ tipc_sk_mcast_rcv(skb);
else
- kfree_skb(clbuf);
+ kfree_skb(skb);
return rc;
}
@@ -451,7 +463,6 @@ static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
* Unicast an ACK periodically, ensuring that
* all nodes in the cluster don't ACK at the same time
*/
-
if (((seqno - tipc_own_addr) % TIPC_MIN_LINK_WIN) == 0) {
tipc_link_proto_xmit(node->active_links[node->addr & 1],
STATE_MSG, 0, 0, 0, 0, 0);
@@ -473,7 +484,6 @@ void tipc_bclink_rcv(struct sk_buff *buf)
int deferred = 0;
/* Screen out unwanted broadcast messages */
-
if (msg_mc_netid(msg) != tipc_net_id)
goto exit;
@@ -486,7 +496,6 @@ void tipc_bclink_rcv(struct sk_buff *buf)
goto unlock;
/* Handle broadcast protocol message */
-
if (unlikely(msg_user(msg) == BCAST_PROTOCOL)) {
if (msg_type(msg) != STATE_MSG)
goto unlock;
@@ -507,14 +516,12 @@ void tipc_bclink_rcv(struct sk_buff *buf)
}
/* Handle in-sequence broadcast message */
-
seqno = msg_seqno(msg);
next_in = mod(node->bclink.last_in + 1);
if (likely(seqno == next_in)) {
receive:
/* Deliver message to destination */
-
if (likely(msg_isdata(msg))) {
tipc_bclink_lock();
bclink_accept_pkt(node, seqno);
@@ -563,7 +570,6 @@ receive:
buf = NULL;
/* Determine new synchronization state */
-
tipc_node_lock(node);
if (unlikely(!tipc_node_is_up(node)))
goto unlock;
@@ -571,33 +577,26 @@ receive:
if (node->bclink.last_in == node->bclink.last_sent)
goto unlock;
- if (!node->bclink.deferred_head) {
+ if (skb_queue_empty(&node->bclink.deferred_queue)) {
node->bclink.oos_state = 1;
goto unlock;
}
- msg = buf_msg(node->bclink.deferred_head);
+ msg = buf_msg(skb_peek(&node->bclink.deferred_queue));
seqno = msg_seqno(msg);
next_in = mod(next_in + 1);
if (seqno != next_in)
goto unlock;
/* Take in-sequence message from deferred queue & deliver it */
-
- buf = node->bclink.deferred_head;
- node->bclink.deferred_head = buf->next;
- buf->next = NULL;
- node->bclink.deferred_size--;
+ buf = __skb_dequeue(&node->bclink.deferred_queue);
goto receive;
}
/* Handle out-of-sequence broadcast message */
-
if (less(next_in, seqno)) {
- deferred = tipc_link_defer_pkt(&node->bclink.deferred_head,
- &node->bclink.deferred_tail,
+ deferred = tipc_link_defer_pkt(&node->bclink.deferred_queue,
buf);
- node->bclink.deferred_size += deferred;
bclink_update_last_sent(node, seqno);
buf = NULL;
}
@@ -756,6 +755,118 @@ void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action)
tipc_bclink_unlock();
}
+static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
+ struct tipc_stats *stats)
+{
+ int i;
+ struct nlattr *nest;
+
+ struct nla_map {
+ __u32 key;
+ __u32 val;
+ };
+
+ struct nla_map map[] = {
+ {TIPC_NLA_STATS_RX_INFO, stats->recv_info},
+ {TIPC_NLA_STATS_RX_FRAGMENTS, stats->recv_fragments},
+ {TIPC_NLA_STATS_RX_FRAGMENTED, stats->recv_fragmented},
+ {TIPC_NLA_STATS_RX_BUNDLES, stats->recv_bundles},
+ {TIPC_NLA_STATS_RX_BUNDLED, stats->recv_bundled},
+ {TIPC_NLA_STATS_TX_INFO, stats->sent_info},
+ {TIPC_NLA_STATS_TX_FRAGMENTS, stats->sent_fragments},
+ {TIPC_NLA_STATS_TX_FRAGMENTED, stats->sent_fragmented},
+ {TIPC_NLA_STATS_TX_BUNDLES, stats->sent_bundles},
+ {TIPC_NLA_STATS_TX_BUNDLED, stats->sent_bundled},
+ {TIPC_NLA_STATS_RX_NACKS, stats->recv_nacks},
+ {TIPC_NLA_STATS_RX_DEFERRED, stats->deferred_recv},
+ {TIPC_NLA_STATS_TX_NACKS, stats->sent_nacks},
+ {TIPC_NLA_STATS_TX_ACKS, stats->sent_acks},
+ {TIPC_NLA_STATS_RETRANSMITTED, stats->retransmitted},
+ {TIPC_NLA_STATS_DUPLICATES, stats->duplicates},
+ {TIPC_NLA_STATS_LINK_CONGS, stats->link_congs},
+ {TIPC_NLA_STATS_MAX_QUEUE, stats->max_queue_sz},
+ {TIPC_NLA_STATS_AVG_QUEUE, stats->queue_sz_counts ?
+ (stats->accu_queue_sz / stats->queue_sz_counts) : 0}
+ };
+
+ nest = nla_nest_start(skb, TIPC_NLA_LINK_STATS);
+ if (!nest)
+ return -EMSGSIZE;
+
+ for (i = 0; i < ARRAY_SIZE(map); i++)
+ if (nla_put_u32(skb, map[i].key, map[i].val))
+ goto msg_full;
+
+ nla_nest_end(skb, nest);
+
+ return 0;
+msg_full:
+ nla_nest_cancel(skb, nest);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
+{
+ int err;
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *prop;
+
+ if (!bcl)
+ return 0;
+
+ tipc_bclink_lock();
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_LINK_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_LINK);
+ if (!attrs)
+ goto msg_full;
+
+ /* The broadcast link is always up */
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP))
+ goto attr_msg_full;
+
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_BROADCAST))
+ goto attr_msg_full;
+ if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, bcl->name))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, bcl->next_in_no))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, bcl->next_out_no))
+ goto attr_msg_full;
+
+ prop = nla_nest_start(msg->skb, TIPC_NLA_LINK_PROP);
+ if (!prop)
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bcl->queue_limit[0]))
+ goto prop_msg_full;
+ nla_nest_end(msg->skb, prop);
+
+ err = __tipc_nl_add_bc_link_stat(msg->skb, &bcl->stats);
+ if (err)
+ goto attr_msg_full;
+
+ tipc_bclink_unlock();
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+prop_msg_full:
+ nla_nest_cancel(msg->skb, prop);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ tipc_bclink_unlock();
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
int tipc_bclink_stats(char *buf, const u32 buf_size)
{
@@ -840,9 +951,12 @@ int tipc_bclink_init(void)
sprintf(bcbearer->media.name, "tipc-broadcast");
spin_lock_init(&bclink->lock);
- INIT_LIST_HEAD(&bcl->waiting_ports);
+ __skb_queue_head_init(&bcl->outqueue);
+ __skb_queue_head_init(&bcl->deferred_queue);
+ skb_queue_head_init(&bcl->waiting_sks);
bcl->next_out_no = 1;
spin_lock_init(&bclink->node.lock);
+ __skb_queue_head_init(&bclink->node.waiting_sks);
bcl->owner = &bclink->node;
bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 4875d9536ae..644d79129fb 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -37,6 +37,8 @@
#ifndef _TIPC_BCAST_H
#define _TIPC_BCAST_H
+#include "netlink.h"
+
#define MAX_NODES 4096
#define WSIZE 32
#define TIPC_BCLINK_RESET 1
@@ -98,6 +100,8 @@ int tipc_bclink_reset_stats(void);
int tipc_bclink_set_queue_limits(u32 limit);
void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action);
uint tipc_bclink_get_mtu(void);
-int tipc_bclink_xmit(struct sk_buff *buf);
+int tipc_bclink_xmit(struct sk_buff_head *list);
+void tipc_bclink_wakeup_users(void);
+int tipc_nl_add_bc_link(struct tipc_nl_msg *msg);
#endif
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 264474394f9..463db5b15b8 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -1,7 +1,7 @@
/*
* net/tipc/bearer.c: TIPC bearer code
*
- * Copyright (c) 1996-2006, 2013, Ericsson AB
+ * Copyright (c) 1996-2006, 2013-2014, Ericsson AB
* Copyright (c) 2004-2006, 2010-2013, Wind River Systems
* All rights reserved.
*
@@ -37,6 +37,7 @@
#include "core.h"
#include "config.h"
#include "bearer.h"
+#include "link.h"
#include "discover.h"
#define MAX_ADDR_STR 60
@@ -49,6 +50,23 @@ static struct tipc_media * const media_info_array[] = {
NULL
};
+static const struct nla_policy
+tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1] = {
+ [TIPC_NLA_BEARER_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_BEARER_NAME] = {
+ .type = NLA_STRING,
+ .len = TIPC_MAX_BEARER_NAME
+ },
+ [TIPC_NLA_BEARER_PROP] = { .type = NLA_NESTED },
+ [TIPC_NLA_BEARER_DOMAIN] = { .type = NLA_U32 }
+};
+
+static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
+ [TIPC_NLA_MEDIA_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_MEDIA_NAME] = { .type = NLA_STRING },
+ [TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
+};
+
struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down);
@@ -627,3 +645,430 @@ void tipc_bearer_stop(void)
}
}
}
+
+/* Caller should hold rtnl_lock to protect the bearer */
+static int __tipc_nl_add_bearer(struct tipc_nl_msg *msg,
+ struct tipc_bearer *bearer)
+{
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *prop;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_BEARER_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_BEARER);
+ if (!attrs)
+ goto msg_full;
+
+ if (nla_put_string(msg->skb, TIPC_NLA_BEARER_NAME, bearer->name))
+ goto attr_msg_full;
+
+ prop = nla_nest_start(msg->skb, TIPC_NLA_BEARER_PROP);
+ if (!prop)
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, bearer->priority))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, bearer->tolerance))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bearer->window))
+ goto prop_msg_full;
+
+ nla_nest_end(msg->skb, prop);
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+prop_msg_full:
+ nla_nest_cancel(msg->skb, prop);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ int i = cb->args[0];
+ struct tipc_bearer *bearer;
+ struct tipc_nl_msg msg;
+
+ if (i == MAX_BEARERS)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rtnl_lock();
+ for (i = 0; i < MAX_BEARERS; i++) {
+ bearer = rtnl_dereference(bearer_list[i]);
+ if (!bearer)
+ continue;
+
+ err = __tipc_nl_add_bearer(&msg, bearer);
+ if (err)
+ break;
+ }
+ rtnl_unlock();
+
+ cb->args[0] = i;
+ return skb->len;
+}
+
+int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *name;
+ struct sk_buff *rep;
+ struct tipc_bearer *bearer;
+ struct tipc_nl_msg msg;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_BEARER])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX,
+ info->attrs[TIPC_NLA_BEARER],
+ tipc_nl_bearer_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_BEARER_NAME])
+ return -EINVAL;
+ name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
+
+ rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!rep)
+ return -ENOMEM;
+
+ msg.skb = rep;
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ rtnl_lock();
+ bearer = tipc_bearer_find(name);
+ if (!bearer) {
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ err = __tipc_nl_add_bearer(&msg, bearer);
+ if (err)
+ goto err_out;
+ rtnl_unlock();
+
+ return genlmsg_reply(rep, info);
+err_out:
+ rtnl_unlock();
+ nlmsg_free(rep);
+
+ return err;
+}
+
+int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *name;
+ struct tipc_bearer *bearer;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_BEARER])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX,
+ info->attrs[TIPC_NLA_BEARER],
+ tipc_nl_bearer_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_BEARER_NAME])
+ return -EINVAL;
+
+ name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
+
+ rtnl_lock();
+ bearer = tipc_bearer_find(name);
+ if (!bearer) {
+ rtnl_unlock();
+ return -EINVAL;
+ }
+
+ bearer_disable(bearer, false);
+ rtnl_unlock();
+
+ return 0;
+}
+
+int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *bearer;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ u32 domain;
+ u32 prio;
+
+ prio = TIPC_MEDIA_LINK_PRI;
+ domain = tipc_own_addr & TIPC_CLUSTER_MASK;
+
+ if (!info->attrs[TIPC_NLA_BEARER])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX,
+ info->attrs[TIPC_NLA_BEARER],
+ tipc_nl_bearer_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_BEARER_NAME])
+ return -EINVAL;
+
+ bearer = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
+
+ if (attrs[TIPC_NLA_BEARER_DOMAIN])
+ domain = nla_get_u32(attrs[TIPC_NLA_BEARER_DOMAIN]);
+
+ if (attrs[TIPC_NLA_BEARER_PROP]) {
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP],
+ props);
+ if (err)
+ return err;
+
+ if (props[TIPC_NLA_PROP_PRIO])
+ prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ }
+
+ rtnl_lock();
+ err = tipc_enable_bearer(bearer, domain, prio);
+ if (err) {
+ rtnl_unlock();
+ return err;
+ }
+ rtnl_unlock();
+
+ return 0;
+}
+
+int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *name;
+ struct tipc_bearer *b;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_BEARER])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX,
+ info->attrs[TIPC_NLA_BEARER],
+ tipc_nl_bearer_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_BEARER_NAME])
+ return -EINVAL;
+ name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
+
+ rtnl_lock();
+ b = tipc_bearer_find(name);
+ if (!b) {
+ rtnl_unlock();
+ return -EINVAL;
+ }
+
+ if (attrs[TIPC_NLA_BEARER_PROP]) {
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP],
+ props);
+ if (err) {
+ rtnl_unlock();
+ return err;
+ }
+
+ if (props[TIPC_NLA_PROP_TOL])
+ b->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+ if (props[TIPC_NLA_PROP_PRIO])
+ b->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ if (props[TIPC_NLA_PROP_WIN])
+ b->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ }
+ rtnl_unlock();
+
+ return 0;
+}
+
+static int __tipc_nl_add_media(struct tipc_nl_msg *msg,
+ struct tipc_media *media)
+{
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *prop;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_MEDIA_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_MEDIA);
+ if (!attrs)
+ goto msg_full;
+
+ if (nla_put_string(msg->skb, TIPC_NLA_MEDIA_NAME, media->name))
+ goto attr_msg_full;
+
+ prop = nla_nest_start(msg->skb, TIPC_NLA_MEDIA_PROP);
+ if (!prop)
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, media->priority))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, media->tolerance))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, media->window))
+ goto prop_msg_full;
+
+ nla_nest_end(msg->skb, prop);
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+prop_msg_full:
+ nla_nest_cancel(msg->skb, prop);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ int i = cb->args[0];
+ struct tipc_nl_msg msg;
+
+ if (i == MAX_MEDIA)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rtnl_lock();
+ for (; media_info_array[i] != NULL; i++) {
+ err = __tipc_nl_add_media(&msg, media_info_array[i]);
+ if (err)
+ break;
+ }
+ rtnl_unlock();
+
+ cb->args[0] = i;
+ return skb->len;
+}
+
+int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *name;
+ struct tipc_nl_msg msg;
+ struct tipc_media *media;
+ struct sk_buff *rep;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_MEDIA])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX,
+ info->attrs[TIPC_NLA_MEDIA],
+ tipc_nl_media_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_MEDIA_NAME])
+ return -EINVAL;
+ name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]);
+
+ rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!rep)
+ return -ENOMEM;
+
+ msg.skb = rep;
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ rtnl_lock();
+ media = tipc_media_find(name);
+ if (!media) {
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ err = __tipc_nl_add_media(&msg, media);
+ if (err)
+ goto err_out;
+ rtnl_unlock();
+
+ return genlmsg_reply(rep, info);
+err_out:
+ rtnl_unlock();
+ nlmsg_free(rep);
+
+ return err;
+}
+
+int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *name;
+ struct tipc_media *m;
+ struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_MEDIA])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX,
+ info->attrs[TIPC_NLA_MEDIA],
+ tipc_nl_media_policy);
+
+ if (!attrs[TIPC_NLA_MEDIA_NAME])
+ return -EINVAL;
+ name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]);
+
+ rtnl_lock();
+ m = tipc_media_find(name);
+ if (!m) {
+ rtnl_unlock();
+ return -EINVAL;
+ }
+
+ if (attrs[TIPC_NLA_MEDIA_PROP]) {
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_MEDIA_PROP],
+ props);
+ if (err) {
+ rtnl_unlock();
+ return err;
+ }
+
+ if (props[TIPC_NLA_PROP_TOL])
+ m->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+ if (props[TIPC_NLA_PROP_PRIO])
+ m->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ if (props[TIPC_NLA_PROP_WIN])
+ m->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ }
+ rtnl_unlock();
+
+ return 0;
+}
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 78fccc49de2..2c1230ac5df 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -1,7 +1,7 @@
/*
* net/tipc/bearer.h: Include file for TIPC bearer code
*
- * Copyright (c) 1996-2006, 2013, Ericsson AB
+ * Copyright (c) 1996-2006, 2013-2014, Ericsson AB
* Copyright (c) 2005, 2010-2011, Wind River Systems
* All rights reserved.
*
@@ -38,6 +38,8 @@
#define _TIPC_BEARER_H
#include "bcast.h"
+#include "netlink.h"
+#include <net/genetlink.h>
#define MAX_BEARERS 2
#define MAX_MEDIA 2
@@ -163,7 +165,7 @@ extern struct tipc_bearer __rcu *bearer_list[];
* TIPC routines available to supported media types
*/
-void tipc_rcv(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
+void tipc_rcv(struct sk_buff *skb, struct tipc_bearer *tb_ptr);
int tipc_enable_bearer(const char *bearer_name, u32 disc_domain, u32 priority);
int tipc_disable_bearer(const char *name);
@@ -176,6 +178,16 @@ extern struct tipc_media eth_media_info;
extern struct tipc_media ib_media_info;
#endif
+int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info);
+
+int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info);
+
int tipc_media_set_priority(const char *name, u32 new_value);
int tipc_media_set_window(const char *name, u32 new_value);
void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a);
diff --git a/net/tipc/config.c b/net/tipc/config.c
index 2b42403ad33..876f4c6a263 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -35,7 +35,7 @@
*/
#include "core.h"
-#include "port.h"
+#include "socket.h"
#include "name_table.h"
#include "config.h"
#include "server.h"
@@ -266,7 +266,7 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
rep_tlv_buf = tipc_media_get_names();
break;
case TIPC_CMD_SHOW_PORTS:
- rep_tlv_buf = tipc_port_get_ports();
+ rep_tlv_buf = tipc_sk_socks_show();
break;
case TIPC_CMD_SHOW_STATS:
rep_tlv_buf = tipc_show_stats();
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 676d18015dd..a5737b8407d 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -35,11 +35,10 @@
*/
#include "core.h"
-#include "ref.h"
#include "name_table.h"
#include "subscr.h"
#include "config.h"
-#include "port.h"
+#include "socket.h"
#include <linux/module.h>
@@ -85,7 +84,7 @@ static void tipc_core_stop(void)
tipc_netlink_stop();
tipc_subscr_stop();
tipc_nametbl_stop();
- tipc_ref_table_stop();
+ tipc_sk_ref_table_stop();
tipc_socket_stop();
tipc_unregister_sysctl();
}
@@ -99,7 +98,7 @@ static int tipc_core_start(void)
get_random_bytes(&tipc_random, sizeof(tipc_random));
- err = tipc_ref_table_init(tipc_max_ports, tipc_random);
+ err = tipc_sk_ref_table_init(tipc_max_ports, tipc_random);
if (err)
goto out_reftbl;
@@ -139,7 +138,7 @@ out_socket:
out_netlink:
tipc_nametbl_stop();
out_nametbl:
- tipc_ref_table_stop();
+ tipc_sk_ref_table_stop();
out_reftbl:
return err;
}
diff --git a/net/tipc/core.h b/net/tipc/core.h
index bb26ed1ee96..84602137ce2 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -41,6 +41,7 @@
#include <linux/tipc.h>
#include <linux/tipc_config.h>
+#include <linux/tipc_netlink.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -81,6 +82,7 @@ extern u32 tipc_own_addr __read_mostly;
extern int tipc_max_ports __read_mostly;
extern int tipc_net_id __read_mostly;
extern int sysctl_tipc_rmem[3] __read_mostly;
+extern int sysctl_tipc_named_timeout __read_mostly;
/*
* Other global variables
@@ -187,8 +189,12 @@ static inline void k_term_timer(struct timer_list *timer)
struct tipc_skb_cb {
void *handle;
- bool deferred;
struct sk_buff *tail;
+ bool deferred;
+ bool wakeup_pending;
+ bool bundling;
+ u16 chain_sz;
+ u16 chain_imp;
};
#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0]))
diff --git a/net/tipc/link.c b/net/tipc/link.c
index fb1485dc673..23bcc113236 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -36,11 +36,12 @@
#include "core.h"
#include "link.h"
-#include "port.h"
+#include "bcast.h"
#include "socket.h"
#include "name_distr.h"
#include "discover.h"
#include "config.h"
+#include "netlink.h"
#include <linux/pkt_sched.h>
@@ -51,6 +52,30 @@ static const char *link_co_err = "Link changeover error, ";
static const char *link_rst_msg = "Resetting link ";
static const char *link_unk_evt = "Unknown link event ";
+static const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {
+ [TIPC_NLA_LINK_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_LINK_NAME] = {
+ .type = NLA_STRING,
+ .len = TIPC_MAX_LINK_NAME
+ },
+ [TIPC_NLA_LINK_MTU] = { .type = NLA_U32 },
+ [TIPC_NLA_LINK_BROADCAST] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_UP] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_ACTIVE] = { .type = NLA_FLAG },
+ [TIPC_NLA_LINK_PROP] = { .type = NLA_NESTED },
+ [TIPC_NLA_LINK_STATS] = { .type = NLA_NESTED },
+ [TIPC_NLA_LINK_RX] = { .type = NLA_U32 },
+ [TIPC_NLA_LINK_TX] = { .type = NLA_U32 }
+};
+
+/* Properties valid for media, bearar and link */
+static const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
+ [TIPC_NLA_PROP_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_PROP_PRIO] = { .type = NLA_U32 },
+ [TIPC_NLA_PROP_TOL] = { .type = NLA_U32 },
+ [TIPC_NLA_PROP_WIN] = { .type = NLA_U32 }
+};
+
/*
* Out-of-range value for link session numbers
*/
@@ -124,18 +149,6 @@ static void link_init_max_pkt(struct tipc_link *l_ptr)
l_ptr->max_pkt_probes = 0;
}
-static u32 link_next_sent(struct tipc_link *l_ptr)
-{
- if (l_ptr->next_out)
- return buf_seqno(l_ptr->next_out);
- return mod(l_ptr->next_out_no);
-}
-
-static u32 link_last_sent(struct tipc_link *l_ptr)
-{
- return mod(link_next_sent(l_ptr) - 1);
-}
-
/*
* Simple non-static link routines (i.e. referenced outside this file)
*/
@@ -158,14 +171,17 @@ int tipc_link_is_active(struct tipc_link *l_ptr)
*/
static void link_timeout(struct tipc_link *l_ptr)
{
+ struct sk_buff *skb;
+
tipc_node_lock(l_ptr->owner);
/* update counters used in statistical profiling of send traffic */
- l_ptr->stats.accu_queue_sz += l_ptr->out_queue_size;
+ l_ptr->stats.accu_queue_sz += skb_queue_len(&l_ptr->outqueue);
l_ptr->stats.queue_sz_counts++;
- if (l_ptr->first_out) {
- struct tipc_msg *msg = buf_msg(l_ptr->first_out);
+ skb = skb_peek(&l_ptr->outqueue);
+ if (skb) {
+ struct tipc_msg *msg = buf_msg(skb);
u32 length = msg_size(msg);
if ((msg_user(msg) == MSG_FRAGMENTER) &&
@@ -193,11 +209,10 @@ static void link_timeout(struct tipc_link *l_ptr)
}
/* do all other link processing performed on a periodic basis */
-
link_state_event(l_ptr, TIMEOUT_EVT);
if (l_ptr->next_out)
- tipc_link_push_queue(l_ptr);
+ tipc_link_push_packets(l_ptr);
tipc_node_unlock(l_ptr->owner);
}
@@ -225,9 +240,10 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
char addr_string[16];
u32 peer = n_ptr->addr;
- if (n_ptr->link_cnt >= 2) {
+ if (n_ptr->link_cnt >= MAX_BEARERS) {
tipc_addr_string_fill(addr_string, n_ptr->addr);
- pr_err("Attempt to establish third link to %s\n", addr_string);
+ pr_err("Attempt to establish %uth link to %s. Max %u allowed.\n",
+ n_ptr->link_cnt, addr_string, MAX_BEARERS);
return NULL;
}
@@ -275,7 +291,9 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
link_init_max_pkt(l_ptr);
l_ptr->next_out_no = 1;
- INIT_LIST_HEAD(&l_ptr->waiting_ports);
+ __skb_queue_head_init(&l_ptr->outqueue);
+ __skb_queue_head_init(&l_ptr->deferred_queue);
+ skb_queue_head_init(&l_ptr->waiting_sks);
link_reset_statistics(l_ptr);
@@ -322,77 +340,47 @@ void tipc_link_delete_list(unsigned int bearer_id, bool shutting_down)
}
/**
- * link_schedule_port - schedule port for deferred sending
- * @l_ptr: pointer to link
- * @origport: reference to sending port
- * @sz: amount of data to be sent
- *
- * Schedules port for renewed sending of messages after link congestion
- * has abated.
+ * link_schedule_user - schedule user for wakeup after congestion
+ * @link: congested link
+ * @oport: sending port
+ * @chain_sz: size of buffer chain that was attempted sent
+ * @imp: importance of message attempted sent
+ * Create pseudo msg to send back to user when congestion abates
*/
-static int link_schedule_port(struct tipc_link *l_ptr, u32 origport, u32 sz)
+static bool link_schedule_user(struct tipc_link *link, u32 oport,
+ uint chain_sz, uint imp)
{
- struct tipc_port *p_ptr;
- struct tipc_sock *tsk;
+ struct sk_buff *buf;
- spin_lock_bh(&tipc_port_list_lock);
- p_ptr = tipc_port_lock(origport);
- if (p_ptr) {
- if (!list_empty(&p_ptr->wait_list))
- goto exit;
- tsk = tipc_port_to_sock(p_ptr);
- tsk->link_cong = 1;
- p_ptr->waiting_pkts = 1 + ((sz - 1) / l_ptr->max_pkt);
- list_add_tail(&p_ptr->wait_list, &l_ptr->waiting_ports);
- l_ptr->stats.link_congs++;
-exit:
- tipc_port_unlock(p_ptr);
- }
- spin_unlock_bh(&tipc_port_list_lock);
- return -ELINKCONG;
+ buf = tipc_msg_create(SOCK_WAKEUP, 0, INT_H_SIZE, 0, tipc_own_addr,
+ tipc_own_addr, oport, 0, 0);
+ if (!buf)
+ return false;
+ TIPC_SKB_CB(buf)->chain_sz = chain_sz;
+ TIPC_SKB_CB(buf)->chain_imp = imp;
+ skb_queue_tail(&link->waiting_sks, buf);
+ link->stats.link_congs++;
+ return true;
}
-void tipc_link_wakeup_ports(struct tipc_link *l_ptr, int all)
+/**
+ * link_prepare_wakeup - prepare users for wakeup after congestion
+ * @link: congested link
+ * Move a number of waiting users, as permitted by available space in
+ * the send queue, from link wait queue to node wait queue for wakeup
+ */
+static void link_prepare_wakeup(struct tipc_link *link)
{
- struct tipc_port *p_ptr;
- struct tipc_sock *tsk;
- struct tipc_port *temp_p_ptr;
- int win = l_ptr->queue_limit[0] - l_ptr->out_queue_size;
+ uint pend_qsz = skb_queue_len(&link->outqueue);
+ struct sk_buff *skb, *tmp;
- if (all)
- win = 100000;
- if (win <= 0)
- return;
- if (!spin_trylock_bh(&tipc_port_list_lock))
- return;
- if (link_congested(l_ptr))
- goto exit;
- list_for_each_entry_safe(p_ptr, temp_p_ptr, &l_ptr->waiting_ports,
- wait_list) {
- if (win <= 0)
+ skb_queue_walk_safe(&link->waiting_sks, skb, tmp) {
+ if (pend_qsz >= link->queue_limit[TIPC_SKB_CB(skb)->chain_imp])
break;
- tsk = tipc_port_to_sock(p_ptr);
- list_del_init(&p_ptr->wait_list);
- spin_lock_bh(p_ptr->lock);
- tsk->link_cong = 0;
- tipc_sock_wakeup(tsk);
- win -= p_ptr->waiting_pkts;
- spin_unlock_bh(p_ptr->lock);
+ pend_qsz += TIPC_SKB_CB(skb)->chain_sz;
+ skb_unlink(skb, &link->waiting_sks);
+ skb_queue_tail(&link->owner->waiting_sks, skb);
}
-
-exit:
- spin_unlock_bh(&tipc_port_list_lock);
-}
-
-/**
- * link_release_outqueue - purge link's outbound message queue
- * @l_ptr: pointer to link
- */
-static void link_release_outqueue(struct tipc_link *l_ptr)
-{
- kfree_skb_list(l_ptr->first_out);
- l_ptr->first_out = NULL;
- l_ptr->out_queue_size = 0;
}
/**
@@ -411,11 +399,9 @@ void tipc_link_reset_fragments(struct tipc_link *l_ptr)
*/
void tipc_link_purge_queues(struct tipc_link *l_ptr)
{
- kfree_skb_list(l_ptr->oldest_deferred_in);
- kfree_skb_list(l_ptr->first_out);
+ __skb_queue_purge(&l_ptr->deferred_queue);
+ __skb_queue_purge(&l_ptr->outqueue);
tipc_link_reset_fragments(l_ptr);
- kfree_skb(l_ptr->proto_msg_queue);
- l_ptr->proto_msg_queue = NULL;
}
void tipc_link_reset(struct tipc_link *l_ptr)
@@ -423,6 +409,7 @@ void tipc_link_reset(struct tipc_link *l_ptr)
u32 prev_state = l_ptr->state;
u32 checkpoint = l_ptr->next_in_no;
int was_active_link = tipc_link_is_active(l_ptr);
+ struct tipc_node *owner = l_ptr->owner;
msg_set_session(l_ptr->pmsg, ((msg_session(l_ptr->pmsg) + 1) & 0xffff));
@@ -446,24 +433,16 @@ void tipc_link_reset(struct tipc_link *l_ptr)
}
/* Clean up all queues: */
- link_release_outqueue(l_ptr);
- kfree_skb(l_ptr->proto_msg_queue);
- l_ptr->proto_msg_queue = NULL;
- kfree_skb_list(l_ptr->oldest_deferred_in);
- if (!list_empty(&l_ptr->waiting_ports))
- tipc_link_wakeup_ports(l_ptr, 1);
-
- l_ptr->retransm_queue_head = 0;
- l_ptr->retransm_queue_size = 0;
- l_ptr->last_out = NULL;
- l_ptr->first_out = NULL;
+ __skb_queue_purge(&l_ptr->outqueue);
+ __skb_queue_purge(&l_ptr->deferred_queue);
+ if (!skb_queue_empty(&l_ptr->waiting_sks)) {
+ skb_queue_splice_init(&l_ptr->waiting_sks, &owner->waiting_sks);
+ owner->action_flags |= TIPC_WAKEUP_USERS;
+ }
l_ptr->next_out = NULL;
l_ptr->unacked_window = 0;
l_ptr->checkpoint = 1;
l_ptr->next_out_no = 1;
- l_ptr->deferred_inqueue_sz = 0;
- l_ptr->oldest_deferred_in = NULL;
- l_ptr->newest_deferred_in = NULL;
l_ptr->fsm_msg_cnt = 0;
l_ptr->stale_count = 0;
link_reset_statistics(l_ptr);
@@ -685,41 +664,46 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
* - For all other messages we discard the buffer and return -EHOSTUNREACH
* - For TIPC internal messages we also reset the link
*/
-static int tipc_link_cong(struct tipc_link *link, struct sk_buff *buf)
+static int tipc_link_cong(struct tipc_link *link, struct sk_buff_head *list)
{
- struct tipc_msg *msg = buf_msg(buf);
- uint psz = msg_size(msg);
+ struct sk_buff *skb = skb_peek(list);
+ struct tipc_msg *msg = buf_msg(skb);
uint imp = tipc_msg_tot_importance(msg);
u32 oport = msg_tot_origport(msg);
- if (likely(imp <= TIPC_CRITICAL_IMPORTANCE)) {
- if (!msg_errcode(msg) && !msg_reroute_cnt(msg)) {
- link_schedule_port(link, oport, psz);
- return -ELINKCONG;
- }
- } else {
+ if (unlikely(imp > TIPC_CRITICAL_IMPORTANCE)) {
pr_warn("%s<%s>, send queue full", link_rst_msg, link->name);
tipc_link_reset(link);
+ goto drop;
}
- kfree_skb_list(buf);
+ if (unlikely(msg_errcode(msg)))
+ goto drop;
+ if (unlikely(msg_reroute_cnt(msg)))
+ goto drop;
+ if (TIPC_SKB_CB(skb)->wakeup_pending)
+ return -ELINKCONG;
+ if (link_schedule_user(link, oport, skb_queue_len(list), imp))
+ return -ELINKCONG;
+drop:
+ __skb_queue_purge(list);
return -EHOSTUNREACH;
}
/**
* __tipc_link_xmit(): same as tipc_link_xmit, but destlink is known & locked
* @link: link to use
- * @buf: chain of buffers containing message
+ * @list: chain of buffers containing message
+ *
* Consumes the buffer chain, except when returning -ELINKCONG
* Returns 0 if success, otherwise errno: -ELINKCONG, -EMSGSIZE (plain socket
* user data messages) or -EHOSTUNREACH (all other messages/senders)
* Only the socket functions tipc_send_stream() and tipc_send_packet() need
* to act on the return value, since they may need to do more send attempts.
*/
-int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *buf)
+int __tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list)
{
- struct tipc_msg *msg = buf_msg(buf);
+ struct tipc_msg *msg = buf_msg(skb_peek(list));
uint psz = msg_size(msg);
- uint qsz = link->out_queue_size;
uint sndlim = link->queue_limit[0];
uint imp = tipc_msg_tot_importance(msg);
uint mtu = link->max_pkt;
@@ -727,71 +711,83 @@ int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *buf)
uint seqno = link->next_out_no;
uint bc_last_in = link->owner->bclink.last_in;
struct tipc_media_addr *addr = &link->media_addr;
- struct sk_buff *next = buf->next;
+ struct sk_buff_head *outqueue = &link->outqueue;
+ struct sk_buff *skb, *tmp;
/* Match queue limits against msg importance: */
- if (unlikely(qsz >= link->queue_limit[imp]))
- return tipc_link_cong(link, buf);
+ if (unlikely(skb_queue_len(outqueue) >= link->queue_limit[imp]))
+ return tipc_link_cong(link, list);
/* Has valid packet limit been used ? */
if (unlikely(psz > mtu)) {
- kfree_skb_list(buf);
+ __skb_queue_purge(list);
return -EMSGSIZE;
}
/* Prepare each packet for sending, and add to outqueue: */
- while (buf) {
- next = buf->next;
- msg = buf_msg(buf);
+ skb_queue_walk_safe(list, skb, tmp) {
+ __skb_unlink(skb, list);
+ msg = buf_msg(skb);
msg_set_word(msg, 2, ((ack << 16) | mod(seqno)));
msg_set_bcast_ack(msg, bc_last_in);
- if (!link->first_out) {
- link->first_out = buf;
- } else if (qsz < sndlim) {
- link->last_out->next = buf;
- } else if (tipc_msg_bundle(link->last_out, buf, mtu)) {
+ if (skb_queue_len(outqueue) < sndlim) {
+ __skb_queue_tail(outqueue, skb);
+ tipc_bearer_send(link->bearer_id, skb, addr);
+ link->next_out = NULL;
+ link->unacked_window = 0;
+ } else if (tipc_msg_bundle(outqueue, skb, mtu)) {
link->stats.sent_bundled++;
- buf = next;
- next = buf->next;
continue;
- } else if (tipc_msg_make_bundle(&buf, mtu, link->addr)) {
+ } else if (tipc_msg_make_bundle(outqueue, skb, mtu,
+ link->addr)) {
link->stats.sent_bundled++;
link->stats.sent_bundles++;
- link->last_out->next = buf;
if (!link->next_out)
- link->next_out = buf;
+ link->next_out = skb_peek_tail(outqueue);
} else {
- link->last_out->next = buf;
+ __skb_queue_tail(outqueue, skb);
if (!link->next_out)
- link->next_out = buf;
- }
-
- /* Send packet if possible: */
- if (likely(++qsz <= sndlim)) {
- tipc_bearer_send(link->bearer_id, buf, addr);
- link->next_out = next;
- link->unacked_window = 0;
+ link->next_out = skb;
}
seqno++;
- link->last_out = buf;
- buf = next;
}
link->next_out_no = seqno;
- link->out_queue_size = qsz;
return 0;
}
+static void skb2list(struct sk_buff *skb, struct sk_buff_head *list)
+{
+ __skb_queue_head_init(list);
+ __skb_queue_tail(list, skb);
+}
+
+static int __tipc_link_xmit_skb(struct tipc_link *link, struct sk_buff *skb)
+{
+ struct sk_buff_head head;
+
+ skb2list(skb, &head);
+ return __tipc_link_xmit(link, &head);
+}
+
+int tipc_link_xmit_skb(struct sk_buff *skb, u32 dnode, u32 selector)
+{
+ struct sk_buff_head head;
+
+ skb2list(skb, &head);
+ return tipc_link_xmit(&head, dnode, selector);
+}
+
/**
* tipc_link_xmit() is the general link level function for message sending
- * @buf: chain of buffers containing message
+ * @list: chain of buffers containing message
* @dsz: amount of user data to be sent
* @dnode: address of destination node
* @selector: a number used for deterministic link selection
* Consumes the buffer chain, except when returning -ELINKCONG
* Returns 0 if success, otherwise errno: -ELINKCONG,-EHOSTUNREACH,-EMSGSIZE
*/
-int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
+int tipc_link_xmit(struct sk_buff_head *list, u32 dnode, u32 selector)
{
struct tipc_link *link = NULL;
struct tipc_node *node;
@@ -802,17 +798,22 @@ int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
tipc_node_lock(node);
link = node->active_links[selector & 1];
if (link)
- rc = __tipc_link_xmit(link, buf);
+ rc = __tipc_link_xmit(link, list);
tipc_node_unlock(node);
}
if (link)
return rc;
- if (likely(in_own_node(dnode)))
- return tipc_sk_rcv(buf);
+ if (likely(in_own_node(dnode))) {
+ /* As a node local message chain never contains more than one
+ * buffer, we just need to dequeue one SKB buffer from the
+ * head list.
+ */
+ return tipc_sk_rcv(__skb_dequeue(list));
+ }
+ __skb_queue_purge(list);
- kfree_skb_list(buf);
return rc;
}
@@ -826,17 +827,17 @@ int tipc_link_xmit(struct sk_buff *buf, u32 dnode, u32 selector)
*/
static void tipc_link_sync_xmit(struct tipc_link *link)
{
- struct sk_buff *buf;
+ struct sk_buff *skb;
struct tipc_msg *msg;
- buf = tipc_buf_acquire(INT_H_SIZE);
- if (!buf)
+ skb = tipc_buf_acquire(INT_H_SIZE);
+ if (!skb)
return;
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
tipc_msg_init(msg, BCAST_PROTOCOL, STATE_MSG, INT_H_SIZE, link->addr);
msg_set_last_bcast(msg, link->owner->bclink.acked);
- __tipc_link_xmit(link, buf);
+ __tipc_link_xmit_skb(link, skb);
}
/*
@@ -856,85 +857,46 @@ static void tipc_link_sync_rcv(struct tipc_node *n, struct sk_buff *buf)
kfree_skb(buf);
}
+struct sk_buff *tipc_skb_queue_next(const struct sk_buff_head *list,
+ const struct sk_buff *skb)
+{
+ if (skb_queue_is_last(list, skb))
+ return NULL;
+ return skb->next;
+}
+
/*
- * tipc_link_push_packet: Push one unsent packet to the media
+ * tipc_link_push_packets - push unsent packets to bearer
+ *
+ * Push out the unsent messages of a link where congestion
+ * has abated. Node is locked.
+ *
+ * Called with node locked
*/
-static u32 tipc_link_push_packet(struct tipc_link *l_ptr)
-{
- struct sk_buff *buf = l_ptr->first_out;
- u32 r_q_size = l_ptr->retransm_queue_size;
- u32 r_q_head = l_ptr->retransm_queue_head;
-
- /* Step to position where retransmission failed, if any, */
- /* consider that buffers may have been released in meantime */
- if (r_q_size && buf) {
- u32 last = lesser(mod(r_q_head + r_q_size),
- link_last_sent(l_ptr));
- u32 first = buf_seqno(buf);
-
- while (buf && less(first, r_q_head)) {
- first = mod(first + 1);
- buf = buf->next;
- }
- l_ptr->retransm_queue_head = r_q_head = first;
- l_ptr->retransm_queue_size = r_q_size = mod(last - first);
- }
-
- /* Continue retransmission now, if there is anything: */
- if (r_q_size && buf) {
- msg_set_ack(buf_msg(buf), mod(l_ptr->next_in_no - 1));
- msg_set_bcast_ack(buf_msg(buf), l_ptr->owner->bclink.last_in);
- tipc_bearer_send(l_ptr->bearer_id, buf, &l_ptr->media_addr);
- l_ptr->retransm_queue_head = mod(++r_q_head);
- l_ptr->retransm_queue_size = --r_q_size;
- l_ptr->stats.retransmitted++;
- return 0;
- }
-
- /* Send deferred protocol message, if any: */
- buf = l_ptr->proto_msg_queue;
- if (buf) {
- msg_set_ack(buf_msg(buf), mod(l_ptr->next_in_no - 1));
- msg_set_bcast_ack(buf_msg(buf), l_ptr->owner->bclink.last_in);
- tipc_bearer_send(l_ptr->bearer_id, buf, &l_ptr->media_addr);
- l_ptr->unacked_window = 0;
- kfree_skb(buf);
- l_ptr->proto_msg_queue = NULL;
- return 0;
- }
+void tipc_link_push_packets(struct tipc_link *l_ptr)
+{
+ struct sk_buff_head *outqueue = &l_ptr->outqueue;
+ struct sk_buff *skb = l_ptr->next_out;
+ struct tipc_msg *msg;
+ u32 next, first;
- /* Send one deferred data message, if send window not full: */
- buf = l_ptr->next_out;
- if (buf) {
- struct tipc_msg *msg = buf_msg(buf);
- u32 next = msg_seqno(msg);
- u32 first = buf_seqno(l_ptr->first_out);
+ skb_queue_walk_from(outqueue, skb) {
+ msg = buf_msg(skb);
+ next = msg_seqno(msg);
+ first = buf_seqno(skb_peek(outqueue));
if (mod(next - first) < l_ptr->queue_limit[0]) {
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
- tipc_bearer_send(l_ptr->bearer_id, buf,
- &l_ptr->media_addr);
if (msg_user(msg) == MSG_BUNDLER)
- msg_set_type(msg, BUNDLE_CLOSED);
- l_ptr->next_out = buf->next;
- return 0;
+ TIPC_SKB_CB(skb)->bundling = false;
+ tipc_bearer_send(l_ptr->bearer_id, skb,
+ &l_ptr->media_addr);
+ l_ptr->next_out = tipc_skb_queue_next(outqueue, skb);
+ } else {
+ break;
}
}
- return 1;
-}
-
-/*
- * push_queue(): push out the unsent messages of a link where
- * congestion has abated. Node is locked
- */
-void tipc_link_push_queue(struct tipc_link *l_ptr)
-{
- u32 res;
-
- do {
- res = tipc_link_push_packet(l_ptr);
- } while (!res);
}
void tipc_link_reset_all(struct tipc_node *node)
@@ -998,20 +960,20 @@ static void link_retransmit_failure(struct tipc_link *l_ptr,
}
}
-void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *buf,
+void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *skb,
u32 retransmits)
{
struct tipc_msg *msg;
- if (!buf)
+ if (!skb)
return;
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
/* Detect repeated retransmit failures */
if (l_ptr->last_retransmitted == msg_seqno(msg)) {
if (++l_ptr->stale_count > 100) {
- link_retransmit_failure(l_ptr, buf);
+ link_retransmit_failure(l_ptr, skb);
return;
}
} else {
@@ -1019,38 +981,29 @@ void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *buf,
l_ptr->stale_count = 1;
}
- while (retransmits && (buf != l_ptr->next_out) && buf) {
- msg = buf_msg(buf);
+ skb_queue_walk_from(&l_ptr->outqueue, skb) {
+ if (!retransmits || skb == l_ptr->next_out)
+ break;
+ msg = buf_msg(skb);
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
- tipc_bearer_send(l_ptr->bearer_id, buf, &l_ptr->media_addr);
- buf = buf->next;
+ tipc_bearer_send(l_ptr->bearer_id, skb, &l_ptr->media_addr);
retransmits--;
l_ptr->stats.retransmitted++;
}
-
- l_ptr->retransm_queue_head = l_ptr->retransm_queue_size = 0;
}
-/**
- * link_insert_deferred_queue - insert deferred messages back into receive chain
- */
-static struct sk_buff *link_insert_deferred_queue(struct tipc_link *l_ptr,
- struct sk_buff *buf)
+static void link_retrieve_defq(struct tipc_link *link,
+ struct sk_buff_head *list)
{
u32 seq_no;
- if (l_ptr->oldest_deferred_in == NULL)
- return buf;
+ if (skb_queue_empty(&link->deferred_queue))
+ return;
- seq_no = buf_seqno(l_ptr->oldest_deferred_in);
- if (seq_no == mod(l_ptr->next_in_no)) {
- l_ptr->newest_deferred_in->next = buf;
- buf = l_ptr->oldest_deferred_in;
- l_ptr->oldest_deferred_in = NULL;
- l_ptr->deferred_inqueue_sz = 0;
- }
- return buf;
+ seq_no = buf_seqno(skb_peek(&link->deferred_queue));
+ if (seq_no == mod(link->next_in_no))
+ skb_queue_splice_tail_init(&link->deferred_queue, list);
}
/**
@@ -1110,43 +1063,42 @@ static int link_recv_buf_validate(struct sk_buff *buf)
/**
* tipc_rcv - process TIPC packets/messages arriving from off-node
- * @head: pointer to message buffer chain
+ * @skb: TIPC packet
* @b_ptr: pointer to bearer message arrived on
*
* Invoked with no locks held. Bearer pointer must point to a valid bearer
* structure (i.e. cannot be NULL), but bearer can be inactive.
*/
-void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
+void tipc_rcv(struct sk_buff *skb, struct tipc_bearer *b_ptr)
{
- while (head) {
- struct tipc_node *n_ptr;
- struct tipc_link *l_ptr;
- struct sk_buff *crs;
- struct sk_buff *buf = head;
- struct tipc_msg *msg;
- u32 seq_no;
- u32 ackd;
- u32 released = 0;
+ struct sk_buff_head head;
+ struct tipc_node *n_ptr;
+ struct tipc_link *l_ptr;
+ struct sk_buff *skb1, *tmp;
+ struct tipc_msg *msg;
+ u32 seq_no;
+ u32 ackd;
+ u32 released;
- head = head->next;
- buf->next = NULL;
+ skb2list(skb, &head);
+ while ((skb = __skb_dequeue(&head))) {
/* Ensure message is well-formed */
- if (unlikely(!link_recv_buf_validate(buf)))
+ if (unlikely(!link_recv_buf_validate(skb)))
goto discard;
/* Ensure message data is a single contiguous unit */
- if (unlikely(skb_linearize(buf)))
+ if (unlikely(skb_linearize(skb)))
goto discard;
/* Handle arrival of a non-unicast link message */
- msg = buf_msg(buf);
+ msg = buf_msg(skb);
if (unlikely(msg_non_seq(msg))) {
if (msg_user(msg) == LINK_CONFIG)
- tipc_disc_rcv(buf, b_ptr);
+ tipc_disc_rcv(skb, b_ptr);
else
- tipc_bclink_rcv(buf);
+ tipc_bclink_rcv(skb);
continue;
}
@@ -1185,31 +1137,30 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
if (n_ptr->bclink.recv_permitted)
tipc_bclink_acknowledge(n_ptr, msg_bcast_ack(msg));
- crs = l_ptr->first_out;
- while ((crs != l_ptr->next_out) &&
- less_eq(buf_seqno(crs), ackd)) {
- struct sk_buff *next = crs->next;
- kfree_skb(crs);
- crs = next;
- released++;
- }
- if (released) {
- l_ptr->first_out = crs;
- l_ptr->out_queue_size -= released;
+ released = 0;
+ skb_queue_walk_safe(&l_ptr->outqueue, skb1, tmp) {
+ if (skb1 == l_ptr->next_out ||
+ more(buf_seqno(skb1), ackd))
+ break;
+ __skb_unlink(skb1, &l_ptr->outqueue);
+ kfree_skb(skb1);
+ released = 1;
}
/* Try sending any messages link endpoint has pending */
if (unlikely(l_ptr->next_out))
- tipc_link_push_queue(l_ptr);
+ tipc_link_push_packets(l_ptr);
- if (unlikely(!list_empty(&l_ptr->waiting_ports)))
- tipc_link_wakeup_ports(l_ptr, 0);
+ if (released && !skb_queue_empty(&l_ptr->waiting_sks)) {
+ link_prepare_wakeup(l_ptr);
+ l_ptr->owner->action_flags |= TIPC_WAKEUP_USERS;
+ }
/* Process the incoming packet */
if (unlikely(!link_working_working(l_ptr))) {
if (msg_user(msg) == LINK_PROTOCOL) {
- tipc_link_proto_rcv(l_ptr, buf);
- head = link_insert_deferred_queue(l_ptr, head);
+ tipc_link_proto_rcv(l_ptr, skb);
+ link_retrieve_defq(l_ptr, &head);
tipc_node_unlock(n_ptr);
continue;
}
@@ -1219,8 +1170,7 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
if (link_working_working(l_ptr)) {
/* Re-insert buffer in front of queue */
- buf->next = head;
- head = buf;
+ __skb_queue_head(&head, skb);
tipc_node_unlock(n_ptr);
continue;
}
@@ -1229,33 +1179,33 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
/* Link is now in state WORKING_WORKING */
if (unlikely(seq_no != mod(l_ptr->next_in_no))) {
- link_handle_out_of_seq_msg(l_ptr, buf);
- head = link_insert_deferred_queue(l_ptr, head);
+ link_handle_out_of_seq_msg(l_ptr, skb);
+ link_retrieve_defq(l_ptr, &head);
tipc_node_unlock(n_ptr);
continue;
}
l_ptr->next_in_no++;
- if (unlikely(l_ptr->oldest_deferred_in))
- head = link_insert_deferred_queue(l_ptr, head);
+ if (unlikely(!skb_queue_empty(&l_ptr->deferred_queue)))
+ link_retrieve_defq(l_ptr, &head);
if (unlikely(++l_ptr->unacked_window >= TIPC_MIN_LINK_WIN)) {
l_ptr->stats.sent_acks++;
tipc_link_proto_xmit(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
}
- if (tipc_link_prepare_input(l_ptr, &buf)) {
+ if (tipc_link_prepare_input(l_ptr, &skb)) {
tipc_node_unlock(n_ptr);
continue;
}
tipc_node_unlock(n_ptr);
- msg = buf_msg(buf);
- if (tipc_link_input(l_ptr, buf) != 0)
+
+ if (tipc_link_input(l_ptr, skb) != 0)
goto discard;
continue;
unlock_discard:
tipc_node_unlock(n_ptr);
discard:
- kfree_skb(buf);
+ kfree_skb(skb);
}
}
@@ -1338,48 +1288,37 @@ static int tipc_link_input(struct tipc_link *l, struct sk_buff *buf)
*
* Returns increase in queue length (i.e. 0 or 1)
*/
-u32 tipc_link_defer_pkt(struct sk_buff **head, struct sk_buff **tail,
- struct sk_buff *buf)
+u32 tipc_link_defer_pkt(struct sk_buff_head *list, struct sk_buff *skb)
{
- struct sk_buff *queue_buf;
- struct sk_buff **prev;
- u32 seq_no = buf_seqno(buf);
-
- buf->next = NULL;
+ struct sk_buff *skb1;
+ u32 seq_no = buf_seqno(skb);
/* Empty queue ? */
- if (*head == NULL) {
- *head = *tail = buf;
+ if (skb_queue_empty(list)) {
+ __skb_queue_tail(list, skb);
return 1;
}
/* Last ? */
- if (less(buf_seqno(*tail), seq_no)) {
- (*tail)->next = buf;
- *tail = buf;
+ if (less(buf_seqno(skb_peek_tail(list)), seq_no)) {
+ __skb_queue_tail(list, skb);
return 1;
}
/* Locate insertion point in queue, then insert; discard if duplicate */
- prev = head;
- queue_buf = *head;
- for (;;) {
- u32 curr_seqno = buf_seqno(queue_buf);
+ skb_queue_walk(list, skb1) {
+ u32 curr_seqno = buf_seqno(skb1);
if (seq_no == curr_seqno) {
- kfree_skb(buf);
+ kfree_skb(skb);
return 0;
}
if (less(seq_no, curr_seqno))
break;
-
- prev = &queue_buf->next;
- queue_buf = queue_buf->next;
}
- buf->next = queue_buf;
- *prev = buf;
+ __skb_queue_before(list, skb1, skb);
return 1;
}
@@ -1409,15 +1348,14 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
return;
}
- if (tipc_link_defer_pkt(&l_ptr->oldest_deferred_in,
- &l_ptr->newest_deferred_in, buf)) {
- l_ptr->deferred_inqueue_sz++;
+ if (tipc_link_defer_pkt(&l_ptr->deferred_queue, buf)) {
l_ptr->stats.deferred_recv++;
TIPC_SKB_CB(buf)->deferred = true;
- if ((l_ptr->deferred_inqueue_sz % 16) == 1)
+ if ((skb_queue_len(&l_ptr->deferred_queue) % 16) == 1)
tipc_link_proto_xmit(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
- } else
+ } else {
l_ptr->stats.duplicates++;
+ }
}
/*
@@ -1431,12 +1369,6 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
u32 msg_size = sizeof(l_ptr->proto_msg);
int r_flag;
- /* Discard any previous message that was deferred due to congestion */
- if (l_ptr->proto_msg_queue) {
- kfree_skb(l_ptr->proto_msg_queue);
- l_ptr->proto_msg_queue = NULL;
- }
-
/* Don't send protocol message during link changeover */
if (l_ptr->exp_msg_count)
return;
@@ -1459,8 +1391,8 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
if (l_ptr->next_out)
next_sent = buf_seqno(l_ptr->next_out);
msg_set_next_sent(msg, next_sent);
- if (l_ptr->oldest_deferred_in) {
- u32 rec = buf_seqno(l_ptr->oldest_deferred_in);
+ if (!skb_queue_empty(&l_ptr->deferred_queue)) {
+ u32 rec = buf_seqno(skb_peek(&l_ptr->deferred_queue));
gap = mod(rec - mod(l_ptr->next_in_no));
}
msg_set_seq_gap(msg, gap);
@@ -1648,7 +1580,7 @@ static void tipc_link_proto_rcv(struct tipc_link *l_ptr, struct sk_buff *buf)
}
if (msg_seq_gap(msg)) {
l_ptr->stats.recv_nacks++;
- tipc_link_retransmit(l_ptr, l_ptr->first_out,
+ tipc_link_retransmit(l_ptr, skb_peek(&l_ptr->outqueue),
msg_seq_gap(msg));
}
break;
@@ -1667,7 +1599,7 @@ static void tipc_link_tunnel_xmit(struct tipc_link *l_ptr,
u32 selector)
{
struct tipc_link *tunnel;
- struct sk_buff *buf;
+ struct sk_buff *skb;
u32 length = msg_size(msg);
tunnel = l_ptr->owner->active_links[selector & 1];
@@ -1676,14 +1608,14 @@ static void tipc_link_tunnel_xmit(struct tipc_link *l_ptr,
return;
}
msg_set_size(tunnel_hdr, length + INT_H_SIZE);
- buf = tipc_buf_acquire(length + INT_H_SIZE);
- if (!buf) {
+ skb = tipc_buf_acquire(length + INT_H_SIZE);
+ if (!skb) {
pr_warn("%sunable to send tunnel msg\n", link_co_err);
return;
}
- skb_copy_to_linear_data(buf, tunnel_hdr, INT_H_SIZE);
- skb_copy_to_linear_data_offset(buf, INT_H_SIZE, msg, length);
- __tipc_link_xmit(tunnel, buf);
+ skb_copy_to_linear_data(skb, tunnel_hdr, INT_H_SIZE);
+ skb_copy_to_linear_data_offset(skb, INT_H_SIZE, msg, length);
+ __tipc_link_xmit_skb(tunnel, skb);
}
@@ -1695,10 +1627,10 @@ static void tipc_link_tunnel_xmit(struct tipc_link *l_ptr,
*/
void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
{
- u32 msgcount = l_ptr->out_queue_size;
- struct sk_buff *crs = l_ptr->first_out;
+ u32 msgcount = skb_queue_len(&l_ptr->outqueue);
struct tipc_link *tunnel = l_ptr->owner->active_links[0];
struct tipc_msg tunnel_hdr;
+ struct sk_buff *skb;
int split_bundles;
if (!tunnel)
@@ -1709,14 +1641,12 @@ void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id);
msg_set_msgcnt(&tunnel_hdr, msgcount);
- if (!l_ptr->first_out) {
- struct sk_buff *buf;
-
- buf = tipc_buf_acquire(INT_H_SIZE);
- if (buf) {
- skb_copy_to_linear_data(buf, &tunnel_hdr, INT_H_SIZE);
+ if (skb_queue_empty(&l_ptr->outqueue)) {
+ skb = tipc_buf_acquire(INT_H_SIZE);
+ if (skb) {
+ skb_copy_to_linear_data(skb, &tunnel_hdr, INT_H_SIZE);
msg_set_size(&tunnel_hdr, INT_H_SIZE);
- __tipc_link_xmit(tunnel, buf);
+ __tipc_link_xmit_skb(tunnel, skb);
} else {
pr_warn("%sunable to send changeover msg\n",
link_co_err);
@@ -1727,8 +1657,8 @@ void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
split_bundles = (l_ptr->owner->active_links[0] !=
l_ptr->owner->active_links[1]);
- while (crs) {
- struct tipc_msg *msg = buf_msg(crs);
+ skb_queue_walk(&l_ptr->outqueue, skb) {
+ struct tipc_msg *msg = buf_msg(skb);
if ((msg_user(msg) == MSG_BUNDLER) && split_bundles) {
struct tipc_msg *m = msg_get_wrapped(msg);
@@ -1746,7 +1676,6 @@ void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
tipc_link_tunnel_xmit(l_ptr, &tunnel_hdr, msg,
msg_link_selector(msg));
}
- crs = crs->next;
}
}
@@ -1762,17 +1691,16 @@ void tipc_link_failover_send_queue(struct tipc_link *l_ptr)
void tipc_link_dup_queue_xmit(struct tipc_link *l_ptr,
struct tipc_link *tunnel)
{
- struct sk_buff *iter;
+ struct sk_buff *skb;
struct tipc_msg tunnel_hdr;
tipc_msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL,
DUPLICATE_MSG, INT_H_SIZE, l_ptr->addr);
- msg_set_msgcnt(&tunnel_hdr, l_ptr->out_queue_size);
+ msg_set_msgcnt(&tunnel_hdr, skb_queue_len(&l_ptr->outqueue));
msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id);
- iter = l_ptr->first_out;
- while (iter) {
- struct sk_buff *outbuf;
- struct tipc_msg *msg = buf_msg(iter);
+ skb_queue_walk(&l_ptr->outqueue, skb) {
+ struct sk_buff *outskb;
+ struct tipc_msg *msg = buf_msg(skb);
u32 length = msg_size(msg);
if (msg_user(msg) == MSG_BUNDLER)
@@ -1780,19 +1708,18 @@ void tipc_link_dup_queue_xmit(struct tipc_link *l_ptr,
msg_set_ack(msg, mod(l_ptr->next_in_no - 1)); /* Update */
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
msg_set_size(&tunnel_hdr, length + INT_H_SIZE);
- outbuf = tipc_buf_acquire(length + INT_H_SIZE);
- if (outbuf == NULL) {
+ outskb = tipc_buf_acquire(length + INT_H_SIZE);
+ if (outskb == NULL) {
pr_warn("%sunable to send duplicate msg\n",
link_co_err);
return;
}
- skb_copy_to_linear_data(outbuf, &tunnel_hdr, INT_H_SIZE);
- skb_copy_to_linear_data_offset(outbuf, INT_H_SIZE, iter->data,
+ skb_copy_to_linear_data(outskb, &tunnel_hdr, INT_H_SIZE);
+ skb_copy_to_linear_data_offset(outskb, INT_H_SIZE, skb->data,
length);
- __tipc_link_xmit(tunnel, outbuf);
+ __tipc_link_xmit_skb(tunnel, outskb);
if (!tipc_link_is_up(l_ptr))
return;
- iter = iter->next;
}
}
@@ -1936,7 +1863,12 @@ void tipc_link_bundle_rcv(struct sk_buff *buf)
}
omsg = buf_msg(obuf);
pos += align(msg_size(omsg));
- if (msg_isdata(omsg) || (msg_user(omsg) == CONN_MANAGER)) {
+ if (msg_isdata(omsg)) {
+ if (unlikely(msg_type(omsg) == TIPC_MCAST_MSG))
+ tipc_sk_mcast_rcv(obuf);
+ else
+ tipc_sk_rcv(obuf);
+ } else if (msg_user(omsg) == CONN_MANAGER) {
tipc_sk_rcv(obuf);
} else if (msg_user(omsg) == NAME_DISTRIBUTOR) {
tipc_named_rcv(obuf);
@@ -2382,3 +2314,435 @@ static void link_print(struct tipc_link *l_ptr, const char *str)
else
pr_cont("\n");
}
+
+/* Parse and validate nested (link) properties valid for media, bearer and link
+ */
+int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[])
+{
+ int err;
+
+ err = nla_parse_nested(props, TIPC_NLA_PROP_MAX, prop,
+ tipc_nl_prop_policy);
+ if (err)
+ return err;
+
+ if (props[TIPC_NLA_PROP_PRIO]) {
+ u32 prio;
+
+ prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ if (prio > TIPC_MAX_LINK_PRI)
+ return -EINVAL;
+ }
+
+ if (props[TIPC_NLA_PROP_TOL]) {
+ u32 tol;
+
+ tol = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+ if ((tol < TIPC_MIN_LINK_TOL) || (tol > TIPC_MAX_LINK_TOL))
+ return -EINVAL;
+ }
+
+ if (props[TIPC_NLA_PROP_WIN]) {
+ u32 win;
+
+ win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ if ((win < TIPC_MIN_LINK_WIN) || (win > TIPC_MAX_LINK_WIN))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ int res = 0;
+ int bearer_id;
+ char *name;
+ struct tipc_link *link;
+ struct tipc_node *node;
+ struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_LINK])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+
+ name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+
+ node = tipc_link_find_owner(name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ tipc_node_lock(node);
+
+ link = node->links[bearer_id];
+ if (!link) {
+ res = -EINVAL;
+ goto out;
+ }
+
+ if (attrs[TIPC_NLA_LINK_PROP]) {
+ struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
+
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP],
+ props);
+ if (err) {
+ res = err;
+ goto out;
+ }
+
+ if (props[TIPC_NLA_PROP_TOL]) {
+ u32 tol;
+
+ tol = nla_get_u32(props[TIPC_NLA_PROP_TOL]);
+ link_set_supervision_props(link, tol);
+ tipc_link_proto_xmit(link, STATE_MSG, 0, 0, tol, 0, 0);
+ }
+ if (props[TIPC_NLA_PROP_PRIO]) {
+ u32 prio;
+
+ prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]);
+ link->priority = prio;
+ tipc_link_proto_xmit(link, STATE_MSG, 0, 0, 0, prio, 0);
+ }
+ if (props[TIPC_NLA_PROP_WIN]) {
+ u32 win;
+
+ win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ tipc_link_set_queue_limits(link, win);
+ }
+ }
+
+out:
+ tipc_node_unlock(node);
+
+ return res;
+}
+
+static int __tipc_nl_add_stats(struct sk_buff *skb, struct tipc_stats *s)
+{
+ int i;
+ struct nlattr *stats;
+
+ struct nla_map {
+ u32 key;
+ u32 val;
+ };
+
+ struct nla_map map[] = {
+ {TIPC_NLA_STATS_RX_INFO, s->recv_info},
+ {TIPC_NLA_STATS_RX_FRAGMENTS, s->recv_fragments},
+ {TIPC_NLA_STATS_RX_FRAGMENTED, s->recv_fragmented},
+ {TIPC_NLA_STATS_RX_BUNDLES, s->recv_bundles},
+ {TIPC_NLA_STATS_RX_BUNDLED, s->recv_bundled},
+ {TIPC_NLA_STATS_TX_INFO, s->sent_info},
+ {TIPC_NLA_STATS_TX_FRAGMENTS, s->sent_fragments},
+ {TIPC_NLA_STATS_TX_FRAGMENTED, s->sent_fragmented},
+ {TIPC_NLA_STATS_TX_BUNDLES, s->sent_bundles},
+ {TIPC_NLA_STATS_TX_BUNDLED, s->sent_bundled},
+ {TIPC_NLA_STATS_MSG_PROF_TOT, (s->msg_length_counts) ?
+ s->msg_length_counts : 1},
+ {TIPC_NLA_STATS_MSG_LEN_CNT, s->msg_length_counts},
+ {TIPC_NLA_STATS_MSG_LEN_TOT, s->msg_lengths_total},
+ {TIPC_NLA_STATS_MSG_LEN_P0, s->msg_length_profile[0]},
+ {TIPC_NLA_STATS_MSG_LEN_P1, s->msg_length_profile[1]},
+ {TIPC_NLA_STATS_MSG_LEN_P2, s->msg_length_profile[2]},
+ {TIPC_NLA_STATS_MSG_LEN_P3, s->msg_length_profile[3]},
+ {TIPC_NLA_STATS_MSG_LEN_P4, s->msg_length_profile[4]},
+ {TIPC_NLA_STATS_MSG_LEN_P5, s->msg_length_profile[5]},
+ {TIPC_NLA_STATS_MSG_LEN_P6, s->msg_length_profile[6]},
+ {TIPC_NLA_STATS_RX_STATES, s->recv_states},
+ {TIPC_NLA_STATS_RX_PROBES, s->recv_probes},
+ {TIPC_NLA_STATS_RX_NACKS, s->recv_nacks},
+ {TIPC_NLA_STATS_RX_DEFERRED, s->deferred_recv},
+ {TIPC_NLA_STATS_TX_STATES, s->sent_states},
+ {TIPC_NLA_STATS_TX_PROBES, s->sent_probes},
+ {TIPC_NLA_STATS_TX_NACKS, s->sent_nacks},
+ {TIPC_NLA_STATS_TX_ACKS, s->sent_acks},
+ {TIPC_NLA_STATS_RETRANSMITTED, s->retransmitted},
+ {TIPC_NLA_STATS_DUPLICATES, s->duplicates},
+ {TIPC_NLA_STATS_LINK_CONGS, s->link_congs},
+ {TIPC_NLA_STATS_MAX_QUEUE, s->max_queue_sz},
+ {TIPC_NLA_STATS_AVG_QUEUE, s->queue_sz_counts ?
+ (s->accu_queue_sz / s->queue_sz_counts) : 0}
+ };
+
+ stats = nla_nest_start(skb, TIPC_NLA_LINK_STATS);
+ if (!stats)
+ return -EMSGSIZE;
+
+ for (i = 0; i < ARRAY_SIZE(map); i++)
+ if (nla_put_u32(skb, map[i].key, map[i].val))
+ goto msg_full;
+
+ nla_nest_end(skb, stats);
+
+ return 0;
+msg_full:
+ nla_nest_cancel(skb, stats);
+
+ return -EMSGSIZE;
+}
+
+/* Caller should hold appropriate locks to protect the link */
+static int __tipc_nl_add_link(struct tipc_nl_msg *msg, struct tipc_link *link)
+{
+ int err;
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *prop;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_LINK_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_LINK);
+ if (!attrs)
+ goto msg_full;
+
+ if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, link->name))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_DEST,
+ tipc_cluster_mask(tipc_own_addr)))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_MTU, link->max_pkt))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, link->next_in_no))
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, link->next_out_no))
+ goto attr_msg_full;
+
+ if (tipc_link_is_up(link))
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP))
+ goto attr_msg_full;
+ if (tipc_link_is_active(link))
+ if (nla_put_flag(msg->skb, TIPC_NLA_LINK_ACTIVE))
+ goto attr_msg_full;
+
+ prop = nla_nest_start(msg->skb, TIPC_NLA_LINK_PROP);
+ if (!prop)
+ goto attr_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, link->priority))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, link->tolerance))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN,
+ link->queue_limit[TIPC_LOW_IMPORTANCE]))
+ goto prop_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, link->priority))
+ goto prop_msg_full;
+ nla_nest_end(msg->skb, prop);
+
+ err = __tipc_nl_add_stats(msg->skb, &link->stats);
+ if (err)
+ goto attr_msg_full;
+
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+prop_msg_full:
+ nla_nest_cancel(msg->skb, prop);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+/* Caller should hold node lock */
+static int __tipc_nl_add_node_links(struct tipc_nl_msg *msg,
+ struct tipc_node *node,
+ u32 *prev_link)
+{
+ u32 i;
+ int err;
+
+ for (i = *prev_link; i < MAX_BEARERS; i++) {
+ *prev_link = i;
+
+ if (!node->links[i])
+ continue;
+
+ err = __tipc_nl_add_link(msg, node->links[i]);
+ if (err)
+ return err;
+ }
+ *prev_link = 0;
+
+ return 0;
+}
+
+int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct tipc_node *node;
+ struct tipc_nl_msg msg;
+ u32 prev_node = cb->args[0];
+ u32 prev_link = cb->args[1];
+ int done = cb->args[2];
+ int err;
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rcu_read_lock();
+
+ if (prev_node) {
+ node = tipc_node_find(prev_node);
+ if (!node) {
+ /* We never set seq or call nl_dump_check_consistent()
+ * this means that setting prev_seq here will cause the
+ * consistence check to fail in the netlink callback
+ * handler. Resulting in the last NLMSG_DONE message
+ * having the NLM_F_DUMP_INTR flag set.
+ */
+ cb->prev_seq = 1;
+ goto out;
+ }
+
+ list_for_each_entry_continue_rcu(node, &tipc_node_list, list) {
+ tipc_node_lock(node);
+ err = __tipc_nl_add_node_links(&msg, node, &prev_link);
+ tipc_node_unlock(node);
+ if (err)
+ goto out;
+
+ prev_node = node->addr;
+ }
+ } else {
+ err = tipc_nl_add_bc_link(&msg);
+ if (err)
+ goto out;
+
+ list_for_each_entry_rcu(node, &tipc_node_list, list) {
+ tipc_node_lock(node);
+ err = __tipc_nl_add_node_links(&msg, node, &prev_link);
+ tipc_node_unlock(node);
+ if (err)
+ goto out;
+
+ prev_node = node->addr;
+ }
+ }
+ done = 1;
+out:
+ rcu_read_unlock();
+
+ cb->args[0] = prev_node;
+ cb->args[1] = prev_link;
+ cb->args[2] = done;
+
+ return skb->len;
+}
+
+int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info)
+{
+ struct sk_buff *ans_skb;
+ struct tipc_nl_msg msg;
+ struct tipc_link *link;
+ struct tipc_node *node;
+ char *name;
+ int bearer_id;
+ int err;
+
+ if (!info->attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+
+ name = nla_data(info->attrs[TIPC_NLA_LINK_NAME]);
+ node = tipc_link_find_owner(name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ ans_skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!ans_skb)
+ return -ENOMEM;
+
+ msg.skb = ans_skb;
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ tipc_node_lock(node);
+ link = node->links[bearer_id];
+ if (!link) {
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ err = __tipc_nl_add_link(&msg, link);
+ if (err)
+ goto err_out;
+
+ tipc_node_unlock(node);
+
+ return genlmsg_reply(ans_skb, info);
+
+err_out:
+ tipc_node_unlock(node);
+ nlmsg_free(ans_skb);
+
+ return err;
+}
+
+int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ char *link_name;
+ unsigned int bearer_id;
+ struct tipc_link *link;
+ struct tipc_node *node;
+ struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_LINK])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_LINK_NAME])
+ return -EINVAL;
+
+ link_name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
+
+ if (strcmp(link_name, tipc_bclink_name) == 0) {
+ err = tipc_bclink_reset_stats();
+ if (err)
+ return err;
+ return 0;
+ }
+
+ node = tipc_link_find_owner(link_name, &bearer_id);
+ if (!node)
+ return -EINVAL;
+
+ tipc_node_lock(node);
+
+ link = node->links[bearer_id];
+ if (!link) {
+ tipc_node_unlock(node);
+ return -EINVAL;
+ }
+
+ link_reset_statistics(link);
+
+ tipc_node_unlock(node);
+
+ return 0;
+}
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 782983ccd32..55812e87ca1 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -1,7 +1,7 @@
/*
* net/tipc/link.h: Include file for TIPC link code
*
- * Copyright (c) 1995-2006, 2013, Ericsson AB
+ * Copyright (c) 1995-2006, 2013-2014, Ericsson AB
* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
* All rights reserved.
*
@@ -37,6 +37,7 @@
#ifndef _TIPC_LINK_H
#define _TIPC_LINK_H
+#include <net/genetlink.h>
#include "msg.h"
#include "node.h"
@@ -118,22 +119,15 @@ struct tipc_stats {
* @max_pkt: current maximum packet size for this link
* @max_pkt_target: desired maximum packet size for this link
* @max_pkt_probes: # of probes based on current (max_pkt, max_pkt_target)
- * @out_queue_size: # of messages in outbound message queue
- * @first_out: ptr to first outbound message in queue
- * @last_out: ptr to last outbound message in queue
+ * @outqueue: outbound message queue
* @next_out_no: next sequence number to use for outbound messages
* @last_retransmitted: sequence number of most recently retransmitted message
* @stale_count: # of identical retransmit requests made by peer
* @next_in_no: next sequence number to expect for inbound messages
- * @deferred_inqueue_sz: # of messages in inbound message queue
- * @oldest_deferred_in: ptr to first inbound message in queue
- * @newest_deferred_in: ptr to last inbound message in queue
+ * @deferred_queue: deferred queue saved OOS b'cast message received from node
* @unacked_window: # of inbound messages rx'd without ack'ing back to peer
- * @proto_msg_queue: ptr to (single) outbound control message
- * @retransm_queue_size: number of messages to retransmit
- * @retransm_queue_head: sequence number of first message to retransmit
* @next_out: ptr to first unsent outbound message in queue
- * @waiting_ports: linked list of ports waiting for link congestion to abate
+ * @waiting_sks: linked list of sockets waiting for link congestion to abate
* @long_msg_seq_no: next identifier to use for outbound fragmented messages
* @reasm_buf: head of partially reassembled inbound message fragments
* @stats: collects statistics regarding link activity
@@ -175,26 +169,19 @@ struct tipc_link {
u32 max_pkt_probes;
/* Sending */
- u32 out_queue_size;
- struct sk_buff *first_out;
- struct sk_buff *last_out;
+ struct sk_buff_head outqueue;
u32 next_out_no;
u32 last_retransmitted;
u32 stale_count;
/* Reception */
u32 next_in_no;
- u32 deferred_inqueue_sz;
- struct sk_buff *oldest_deferred_in;
- struct sk_buff *newest_deferred_in;
+ struct sk_buff_head deferred_queue;
u32 unacked_window;
/* Congestion handling */
- struct sk_buff *proto_msg_queue;
- u32 retransm_queue_size;
- u32 retransm_queue_head;
struct sk_buff *next_out;
- struct list_head waiting_ports;
+ struct sk_buff_head waiting_sks;
/* Fragmentation/reassembly */
u32 long_msg_seq_no;
@@ -226,19 +213,26 @@ struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area,
void tipc_link_reset_all(struct tipc_node *node);
void tipc_link_reset(struct tipc_link *l_ptr);
void tipc_link_reset_list(unsigned int bearer_id);
-int tipc_link_xmit(struct sk_buff *buf, u32 dest, u32 selector);
-int __tipc_link_xmit(struct tipc_link *link, struct sk_buff *buf);
+int tipc_link_xmit_skb(struct sk_buff *skb, u32 dest, u32 selector);
+int tipc_link_xmit(struct sk_buff_head *list, u32 dest, u32 selector);
+int __tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list);
u32 tipc_link_get_max_pkt(u32 dest, u32 selector);
void tipc_link_bundle_rcv(struct sk_buff *buf);
void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int prob,
u32 gap, u32 tolerance, u32 priority, u32 acked_mtu);
-void tipc_link_push_queue(struct tipc_link *l_ptr);
-u32 tipc_link_defer_pkt(struct sk_buff **head, struct sk_buff **tail,
- struct sk_buff *buf);
-void tipc_link_wakeup_ports(struct tipc_link *l_ptr, int all);
+void tipc_link_push_packets(struct tipc_link *l_ptr);
+u32 tipc_link_defer_pkt(struct sk_buff_head *list, struct sk_buff *buf);
void tipc_link_set_queue_limits(struct tipc_link *l_ptr, u32 window);
void tipc_link_retransmit(struct tipc_link *l_ptr,
struct sk_buff *start, u32 retransmits);
+struct sk_buff *tipc_skb_queue_next(const struct sk_buff_head *list,
+ const struct sk_buff *skb);
+
+int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
/*
* Link sequence number manipulation routines (uses modulo 2**16 arithmetic)
@@ -253,18 +247,14 @@ static inline u32 mod(u32 x)
return x & 0xffffu;
}
-static inline int between(u32 lower, u32 upper, u32 n)
+static inline int less_eq(u32 left, u32 right)
{
- if ((lower < n) && (n < upper))
- return 1;
- if ((upper < lower) && ((n > lower) || (n < upper)))
- return 1;
- return 0;
+ return mod(right - left) < 32768u;
}
-static inline int less_eq(u32 left, u32 right)
+static inline int more(u32 left, u32 right)
{
- return mod(right - left) < 32768u;
+ return !less_eq(left, right);
}
static inline int less(u32 left, u32 right)
@@ -303,7 +293,7 @@ static inline int link_reset_reset(struct tipc_link *l_ptr)
static inline int link_congested(struct tipc_link *l_ptr)
{
- return l_ptr->out_queue_size >= l_ptr->queue_limit[0];
+ return skb_queue_len(&l_ptr->outqueue) >= l_ptr->queue_limit[0];
}
#endif
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 9680be6d388..a687b30a699 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -56,15 +56,42 @@ void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
msg_set_size(m, hsize);
msg_set_prevnode(m, tipc_own_addr);
msg_set_type(m, type);
- msg_set_orignode(m, tipc_own_addr);
- msg_set_destnode(m, destnode);
+ if (hsize > SHORT_H_SIZE) {
+ msg_set_orignode(m, tipc_own_addr);
+ msg_set_destnode(m, destnode);
+ }
+}
+
+struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
+ uint data_sz, u32 dnode, u32 onode,
+ u32 dport, u32 oport, int errcode)
+{
+ struct tipc_msg *msg;
+ struct sk_buff *buf;
+
+ buf = tipc_buf_acquire(hdr_sz + data_sz);
+ if (unlikely(!buf))
+ return NULL;
+
+ msg = buf_msg(buf);
+ tipc_msg_init(msg, user, type, hdr_sz, dnode);
+ msg_set_size(msg, hdr_sz + data_sz);
+ msg_set_prevnode(msg, onode);
+ msg_set_origport(msg, oport);
+ msg_set_destport(msg, dport);
+ msg_set_errcode(msg, errcode);
+ if (hdr_sz > SHORT_H_SIZE) {
+ msg_set_orignode(msg, onode);
+ msg_set_destnode(msg, dnode);
+ }
+ return buf;
}
/* tipc_buf_append(): Append a buffer to the fragment list of another buffer
* @*headbuf: in: NULL for first frag, otherwise value returned from prev call
* out: set when successful non-complete reassembly, otherwise NULL
* @*buf: in: the buffer to append. Always defined
- * out: head buf after sucessful complete reassembly, otherwise NULL
+ * out: head buf after successful complete reassembly, otherwise NULL
* Returns 1 when reassembly complete, otherwise 0
*/
int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
@@ -135,15 +162,16 @@ err:
/**
* tipc_msg_build - create buffer chain containing specified header and data
* @mhdr: Message header, to be prepended to data
- * @iov: User data
+ * @m: User message
* @offset: Posision in iov to start copying from
* @dsz: Total length of user data
* @pktmax: Max packet size that can be used
- * @chain: Buffer or chain of buffers to be returned to caller
+ * @list: Buffer or chain of buffers to be returned to caller
+ *
* Returns message data size or errno: -ENOMEM, -EFAULT
*/
-int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
- int offset, int dsz, int pktmax , struct sk_buff **chain)
+int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset,
+ int dsz, int pktmax, struct sk_buff_head *list)
{
int mhsz = msg_hdr_sz(mhdr);
int msz = mhsz + dsz;
@@ -152,7 +180,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
int pktrem = pktmax;
int drem = dsz;
struct tipc_msg pkthdr;
- struct sk_buff *buf, *prev;
+ struct sk_buff *skb;
char *pktpos;
int rc;
@@ -160,13 +188,14 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
/* No fragmentation needed? */
if (likely(msz <= pktmax)) {
- buf = tipc_buf_acquire(msz);
- *chain = buf;
- if (unlikely(!buf))
+ skb = tipc_buf_acquire(msz);
+ if (unlikely(!skb))
return -ENOMEM;
- skb_copy_to_linear_data(buf, mhdr, mhsz);
- pktpos = buf->data + mhsz;
- if (!dsz || !memcpy_fromiovecend(pktpos, iov, offset, dsz))
+ __skb_queue_tail(list, skb);
+ skb_copy_to_linear_data(skb, mhdr, mhsz);
+ pktpos = skb->data + mhsz;
+ if (!dsz || !memcpy_fromiovecend(pktpos, m->msg_iter.iov, offset,
+ dsz))
return dsz;
rc = -EFAULT;
goto error;
@@ -179,14 +208,15 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
msg_set_fragm_no(&pkthdr, pktno);
/* Prepare first fragment */
- *chain = buf = tipc_buf_acquire(pktmax);
- if (!buf)
+ skb = tipc_buf_acquire(pktmax);
+ if (!skb)
return -ENOMEM;
- pktpos = buf->data;
- skb_copy_to_linear_data(buf, &pkthdr, INT_H_SIZE);
+ __skb_queue_tail(list, skb);
+ pktpos = skb->data;
+ skb_copy_to_linear_data(skb, &pkthdr, INT_H_SIZE);
pktpos += INT_H_SIZE;
pktrem -= INT_H_SIZE;
- skb_copy_to_linear_data_offset(buf, INT_H_SIZE, mhdr, mhsz);
+ skb_copy_to_linear_data_offset(skb, INT_H_SIZE, mhdr, mhsz);
pktpos += mhsz;
pktrem -= mhsz;
@@ -194,7 +224,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
if (drem < pktrem)
pktrem = drem;
- if (memcpy_fromiovecend(pktpos, iov, offset, pktrem)) {
+ if (memcpy_fromiovecend(pktpos, m->msg_iter.iov, offset, pktrem)) {
rc = -EFAULT;
goto error;
}
@@ -209,42 +239,41 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
pktsz = drem + INT_H_SIZE;
else
pktsz = pktmax;
- prev = buf;
- buf = tipc_buf_acquire(pktsz);
- if (!buf) {
+ skb = tipc_buf_acquire(pktsz);
+ if (!skb) {
rc = -ENOMEM;
goto error;
}
- prev->next = buf;
+ __skb_queue_tail(list, skb);
msg_set_type(&pkthdr, FRAGMENT);
msg_set_size(&pkthdr, pktsz);
msg_set_fragm_no(&pkthdr, ++pktno);
- skb_copy_to_linear_data(buf, &pkthdr, INT_H_SIZE);
- pktpos = buf->data + INT_H_SIZE;
+ skb_copy_to_linear_data(skb, &pkthdr, INT_H_SIZE);
+ pktpos = skb->data + INT_H_SIZE;
pktrem = pktsz - INT_H_SIZE;
} while (1);
-
- msg_set_type(buf_msg(buf), LAST_FRAGMENT);
+ msg_set_type(buf_msg(skb), LAST_FRAGMENT);
return dsz;
error:
- kfree_skb_list(*chain);
- *chain = NULL;
+ __skb_queue_purge(list);
+ __skb_queue_head_init(list);
return rc;
}
/**
* tipc_msg_bundle(): Append contents of a buffer to tail of an existing one
- * @bbuf: the existing buffer ("bundle")
- * @buf: buffer to be appended
+ * @list: the buffer chain of the existing buffer ("bundle")
+ * @skb: buffer to be appended
* @mtu: max allowable size for the bundle buffer
* Consumes buffer if successful
* Returns true if bundling could be performed, otherwise false
*/
-bool tipc_msg_bundle(struct sk_buff *bbuf, struct sk_buff *buf, u32 mtu)
+bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu)
{
- struct tipc_msg *bmsg = buf_msg(bbuf);
- struct tipc_msg *msg = buf_msg(buf);
+ struct sk_buff *bskb = skb_peek_tail(list);
+ struct tipc_msg *bmsg = buf_msg(bskb);
+ struct tipc_msg *msg = buf_msg(skb);
unsigned int bsz = msg_size(bmsg);
unsigned int msz = msg_size(msg);
u32 start = align(bsz);
@@ -259,35 +288,36 @@ bool tipc_msg_bundle(struct sk_buff *bbuf, struct sk_buff *buf, u32 mtu)
return false;
if (likely(msg_user(bmsg) != MSG_BUNDLER))
return false;
- if (likely(msg_type(bmsg) != BUNDLE_OPEN))
+ if (likely(!TIPC_SKB_CB(bskb)->bundling))
return false;
- if (unlikely(skb_tailroom(bbuf) < (pad + msz)))
+ if (unlikely(skb_tailroom(bskb) < (pad + msz)))
return false;
if (unlikely(max < (start + msz)))
return false;
- skb_put(bbuf, pad + msz);
- skb_copy_to_linear_data_offset(bbuf, start, buf->data, msz);
+ skb_put(bskb, pad + msz);
+ skb_copy_to_linear_data_offset(bskb, start, skb->data, msz);
msg_set_size(bmsg, start + msz);
msg_set_msgcnt(bmsg, msg_msgcnt(bmsg) + 1);
- bbuf->next = buf->next;
- kfree_skb(buf);
+ kfree_skb(skb);
return true;
}
/**
* tipc_msg_make_bundle(): Create bundle buf and append message to its tail
- * @buf: buffer to be appended and replaced
- * @mtu: max allowable size for the bundle buffer, inclusive header
+ * @list: the buffer chain
+ * @skb: buffer to be appended and replaced
+ * @mtu: max allowable size for the bundle buffer, inclusive header
* @dnode: destination node for message. (Not always present in header)
* Replaces buffer if successful
- * Returns true if sucess, otherwise false
+ * Returns true if success, otherwise false
*/
-bool tipc_msg_make_bundle(struct sk_buff **buf, u32 mtu, u32 dnode)
+bool tipc_msg_make_bundle(struct sk_buff_head *list, struct sk_buff *skb,
+ u32 mtu, u32 dnode)
{
- struct sk_buff *bbuf;
+ struct sk_buff *bskb;
struct tipc_msg *bmsg;
- struct tipc_msg *msg = buf_msg(*buf);
+ struct tipc_msg *msg = buf_msg(skb);
u32 msz = msg_size(msg);
u32 max = mtu - INT_H_SIZE;
@@ -300,20 +330,19 @@ bool tipc_msg_make_bundle(struct sk_buff **buf, u32 mtu, u32 dnode)
if (msz > (max / 2))
return false;
- bbuf = tipc_buf_acquire(max);
- if (!bbuf)
+ bskb = tipc_buf_acquire(max);
+ if (!bskb)
return false;
- skb_trim(bbuf, INT_H_SIZE);
- bmsg = buf_msg(bbuf);
- tipc_msg_init(bmsg, MSG_BUNDLER, BUNDLE_OPEN, INT_H_SIZE, dnode);
+ skb_trim(bskb, INT_H_SIZE);
+ bmsg = buf_msg(bskb);
+ tipc_msg_init(bmsg, MSG_BUNDLER, 0, INT_H_SIZE, dnode);
msg_set_seqno(bmsg, msg_seqno(msg));
msg_set_ack(bmsg, msg_ack(msg));
msg_set_bcast_ack(bmsg, msg_bcast_ack(msg));
- bbuf->next = (*buf)->next;
- tipc_msg_bundle(bbuf, *buf, mtu);
- *buf = bbuf;
- return true;
+ TIPC_SKB_CB(bskb)->bundling = true;
+ __skb_queue_tail(list, bskb);
+ return tipc_msg_bundle(list, skb, mtu);
}
/**
@@ -399,22 +428,23 @@ int tipc_msg_eval(struct sk_buff *buf, u32 *dnode)
/* tipc_msg_reassemble() - clone a buffer chain of fragments and
* reassemble the clones into one message
*/
-struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain)
+struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list)
{
- struct sk_buff *buf = chain;
- struct sk_buff *frag = buf;
+ struct sk_buff *skb;
+ struct sk_buff *frag = NULL;
struct sk_buff *head = NULL;
int hdr_sz;
/* Copy header if single buffer */
- if (!buf->next) {
- hdr_sz = skb_headroom(buf) + msg_hdr_sz(buf_msg(buf));
- return __pskb_copy(buf, hdr_sz, GFP_ATOMIC);
+ if (skb_queue_len(list) == 1) {
+ skb = skb_peek(list);
+ hdr_sz = skb_headroom(skb) + msg_hdr_sz(buf_msg(skb));
+ return __pskb_copy(skb, hdr_sz, GFP_ATOMIC);
}
/* Clone all fragments and reassemble */
- while (buf) {
- frag = skb_clone(buf, GFP_ATOMIC);
+ skb_queue_walk(list, skb) {
+ frag = skb_clone(skb, GFP_ATOMIC);
if (!frag)
goto error;
frag->next = NULL;
@@ -422,7 +452,6 @@ struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain)
break;
if (!head)
goto error;
- buf = buf->next;
}
return frag;
error:
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 462fa194a6a..d5c83d7ecb4 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -442,6 +442,7 @@ static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
#define NAME_DISTRIBUTOR 11
#define MSG_FRAGMENTER 12
#define LINK_CONFIG 13
+#define SOCK_WAKEUP 14 /* pseudo user */
/*
* Connection management protocol message types
@@ -463,11 +464,6 @@ static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m)
#define FRAGMENT 1
#define LAST_FRAGMENT 2
-/* Bundling protocol message types
- */
-#define BUNDLE_OPEN 0
-#define BUNDLE_CLOSED 1
-
/*
* Link management protocol message types
*/
@@ -732,15 +728,20 @@ int tipc_msg_eval(struct sk_buff *buf, u32 *dnode);
void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize,
u32 destnode);
+struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz,
+ uint data_sz, u32 dnode, u32 onode,
+ u32 dport, u32 oport, int errcode);
+
int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf);
-bool tipc_msg_bundle(struct sk_buff *bbuf, struct sk_buff *buf, u32 mtu);
+bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu);
-bool tipc_msg_make_bundle(struct sk_buff **buf, u32 mtu, u32 dnode);
+bool tipc_msg_make_bundle(struct sk_buff_head *list, struct sk_buff *skb,
+ u32 mtu, u32 dnode);
-int tipc_msg_build(struct tipc_msg *mhdr, struct iovec const *iov,
- int offset, int dsz, int mtu , struct sk_buff **chain);
+int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset,
+ int dsz, int mtu, struct sk_buff_head *list);
-struct sk_buff *tipc_msg_reassemble(struct sk_buff *chain);
+struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list);
#endif
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index dcc15bcd569..ba6083dca95 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -1,7 +1,7 @@
/*
* net/tipc/name_distr.c: TIPC name distribution code
*
- * Copyright (c) 2000-2006, Ericsson AB
+ * Copyright (c) 2000-2006, 2014, Ericsson AB
* Copyright (c) 2005, 2010-2011, Wind River Systems
* All rights reserved.
*
@@ -38,39 +38,21 @@
#include "link.h"
#include "name_distr.h"
+int sysctl_tipc_named_timeout __read_mostly = 2000;
+
/**
- * struct publ_list - list of publications made by this node
- * @list: circular list of publications
- * @list_size: number of entries in list
+ * struct tipc_dist_queue - queue holding deferred name table updates
*/
-struct publ_list {
- struct list_head list;
- u32 size;
-};
-
-static struct publ_list publ_zone = {
- .list = LIST_HEAD_INIT(publ_zone.list),
- .size = 0,
-};
-
-static struct publ_list publ_cluster = {
- .list = LIST_HEAD_INIT(publ_cluster.list),
- .size = 0,
-};
-
-static struct publ_list publ_node = {
- .list = LIST_HEAD_INIT(publ_node.list),
- .size = 0,
-};
-
-static struct publ_list *publ_lists[] = {
- NULL,
- &publ_zone, /* publ_lists[TIPC_ZONE_SCOPE] */
- &publ_cluster, /* publ_lists[TIPC_CLUSTER_SCOPE] */
- &publ_node /* publ_lists[TIPC_NODE_SCOPE] */
+static struct list_head tipc_dist_queue = LIST_HEAD_INIT(tipc_dist_queue);
+
+struct distr_queue_item {
+ struct distr_item i;
+ u32 dtype;
+ u32 node;
+ unsigned long expires;
+ struct list_head next;
};
-
/**
* publ_to_item - add publication info to a publication message
*/
@@ -99,9 +81,9 @@ static struct sk_buff *named_prepare_buf(u32 type, u32 size, u32 dest)
return buf;
}
-void named_cluster_distribute(struct sk_buff *buf)
+void named_cluster_distribute(struct sk_buff *skb)
{
- struct sk_buff *obuf;
+ struct sk_buff *oskb;
struct tipc_node *node;
u32 dnode;
@@ -112,15 +94,15 @@ void named_cluster_distribute(struct sk_buff *buf)
continue;
if (!tipc_node_active_links(node))
continue;
- obuf = skb_copy(buf, GFP_ATOMIC);
- if (!obuf)
+ oskb = skb_copy(skb, GFP_ATOMIC);
+ if (!oskb)
break;
- msg_set_destnode(buf_msg(obuf), dnode);
- tipc_link_xmit(obuf, dnode, dnode);
+ msg_set_destnode(buf_msg(oskb), dnode);
+ tipc_link_xmit_skb(oskb, dnode, dnode);
}
rcu_read_unlock();
- kfree_skb(buf);
+ kfree_skb(skb);
}
/**
@@ -131,8 +113,8 @@ struct sk_buff *tipc_named_publish(struct publication *publ)
struct sk_buff *buf;
struct distr_item *item;
- list_add_tail(&publ->local_list, &publ_lists[publ->scope]->list);
- publ_lists[publ->scope]->size++;
+ list_add_tail_rcu(&publ->local_list,
+ &tipc_nametbl->publ_list[publ->scope]);
if (publ->scope == TIPC_NODE_SCOPE)
return NULL;
@@ -157,7 +139,6 @@ struct sk_buff *tipc_named_withdraw(struct publication *publ)
struct distr_item *item;
list_del(&publ->local_list);
- publ_lists[publ->scope]->size--;
if (publ->scope == TIPC_NODE_SCOPE)
return NULL;
@@ -175,32 +156,28 @@ struct sk_buff *tipc_named_withdraw(struct publication *publ)
/**
* named_distribute - prepare name info for bulk distribution to another node
- * @msg_list: list of messages (buffers) to be returned from this function
+ * @list: list of messages (buffers) to be returned from this function
* @dnode: node to be updated
* @pls: linked list of publication items to be packed into buffer chain
*/
-static void named_distribute(struct list_head *msg_list, u32 dnode,
- struct publ_list *pls)
+static void named_distribute(struct sk_buff_head *list, u32 dnode,
+ struct list_head *pls)
{
struct publication *publ;
- struct sk_buff *buf = NULL;
+ struct sk_buff *skb = NULL;
struct distr_item *item = NULL;
- uint dsz = pls->size * ITEM_SIZE;
uint msg_dsz = (tipc_node_get_mtu(dnode, 0) / ITEM_SIZE) * ITEM_SIZE;
- uint rem = dsz;
- uint msg_rem = 0;
+ uint msg_rem = msg_dsz;
- list_for_each_entry(publ, &pls->list, local_list) {
+ list_for_each_entry(publ, pls, local_list) {
/* Prepare next buffer: */
- if (!buf) {
- msg_rem = min_t(uint, rem, msg_dsz);
- rem -= msg_rem;
- buf = named_prepare_buf(PUBLICATION, msg_rem, dnode);
- if (!buf) {
+ if (!skb) {
+ skb = named_prepare_buf(PUBLICATION, msg_rem, dnode);
+ if (!skb) {
pr_warn("Bulk publication failure\n");
return;
}
- item = (struct distr_item *)msg_data(buf_msg(buf));
+ item = (struct distr_item *)msg_data(buf_msg(skb));
}
/* Pack publication into message: */
@@ -210,10 +187,16 @@ static void named_distribute(struct list_head *msg_list, u32 dnode,
/* Append full buffer to list: */
if (!msg_rem) {
- list_add_tail((struct list_head *)buf, msg_list);
- buf = NULL;
+ __skb_queue_tail(list, skb);
+ skb = NULL;
+ msg_rem = msg_dsz;
}
}
+ if (skb) {
+ msg_set_size(buf_msg(skb), INT_H_SIZE + (msg_dsz - msg_rem));
+ skb_trim(skb, INT_H_SIZE + (msg_dsz - msg_rem));
+ __skb_queue_tail(list, skb);
+ }
}
/**
@@ -221,36 +204,68 @@ static void named_distribute(struct list_head *msg_list, u32 dnode,
*/
void tipc_named_node_up(u32 dnode)
{
- LIST_HEAD(msg_list);
- struct sk_buff *buf_chain;
-
- read_lock_bh(&tipc_nametbl_lock);
- named_distribute(&msg_list, dnode, &publ_cluster);
- named_distribute(&msg_list, dnode, &publ_zone);
- read_unlock_bh(&tipc_nametbl_lock);
-
- /* Convert circular list to linear list and send: */
- buf_chain = (struct sk_buff *)msg_list.next;
- ((struct sk_buff *)msg_list.prev)->next = NULL;
- tipc_link_xmit(buf_chain, dnode, dnode);
+ struct sk_buff_head head;
+
+ __skb_queue_head_init(&head);
+
+ rcu_read_lock();
+ named_distribute(&head, dnode,
+ &tipc_nametbl->publ_list[TIPC_CLUSTER_SCOPE]);
+ named_distribute(&head, dnode,
+ &tipc_nametbl->publ_list[TIPC_ZONE_SCOPE]);
+ rcu_read_unlock();
+
+ tipc_link_xmit(&head, dnode, dnode);
+}
+
+static void tipc_publ_subscribe(struct publication *publ, u32 addr)
+{
+ struct tipc_node *node;
+
+ if (in_own_node(addr))
+ return;
+
+ node = tipc_node_find(addr);
+ if (!node) {
+ pr_warn("Node subscription rejected, unknown node 0x%x\n",
+ addr);
+ return;
+ }
+
+ tipc_node_lock(node);
+ list_add_tail(&publ->nodesub_list, &node->publ_list);
+ tipc_node_unlock(node);
+}
+
+static void tipc_publ_unsubscribe(struct publication *publ, u32 addr)
+{
+ struct tipc_node *node;
+
+ node = tipc_node_find(addr);
+ if (!node)
+ return;
+
+ tipc_node_lock(node);
+ list_del_init(&publ->nodesub_list);
+ tipc_node_unlock(node);
}
/**
- * named_purge_publ - remove publication associated with a failed node
+ * tipc_publ_purge - remove publication associated with a failed node
*
* Invoked for each publication issued by a newly failed node.
* Removes publication structure from name table & deletes it.
*/
-static void named_purge_publ(struct publication *publ)
+static void tipc_publ_purge(struct publication *publ, u32 addr)
{
struct publication *p;
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
p = tipc_nametbl_remove_publ(publ->type, publ->lower,
publ->node, publ->ref, publ->key);
if (p)
- tipc_nodesub_unsubscribe(&p->subscr);
- write_unlock_bh(&tipc_nametbl_lock);
+ tipc_publ_unsubscribe(p, addr);
+ spin_unlock_bh(&tipc_nametbl_lock);
if (p != publ) {
pr_err("Unable to remove publication from failed node\n"
@@ -259,7 +274,96 @@ static void named_purge_publ(struct publication *publ)
publ->key);
}
- kfree(p);
+ kfree_rcu(p, rcu);
+}
+
+void tipc_publ_notify(struct list_head *nsub_list, u32 addr)
+{
+ struct publication *publ, *tmp;
+
+ list_for_each_entry_safe(publ, tmp, nsub_list, nodesub_list)
+ tipc_publ_purge(publ, addr);
+}
+
+/**
+ * tipc_update_nametbl - try to process a nametable update and notify
+ * subscribers
+ *
+ * tipc_nametbl_lock must be held.
+ * Returns the publication item if successful, otherwise NULL.
+ */
+static bool tipc_update_nametbl(struct distr_item *i, u32 node, u32 dtype)
+{
+ struct publication *publ = NULL;
+
+ if (dtype == PUBLICATION) {
+ publ = tipc_nametbl_insert_publ(ntohl(i->type), ntohl(i->lower),
+ ntohl(i->upper),
+ TIPC_CLUSTER_SCOPE, node,
+ ntohl(i->ref), ntohl(i->key));
+ if (publ) {
+ tipc_publ_subscribe(publ, node);
+ return true;
+ }
+ } else if (dtype == WITHDRAWAL) {
+ publ = tipc_nametbl_remove_publ(ntohl(i->type), ntohl(i->lower),
+ node, ntohl(i->ref),
+ ntohl(i->key));
+ if (publ) {
+ tipc_publ_unsubscribe(publ, node);
+ kfree_rcu(publ, rcu);
+ return true;
+ }
+ } else {
+ pr_warn("Unrecognized name table message received\n");
+ }
+ return false;
+}
+
+/**
+ * tipc_named_add_backlog - add a failed name table update to the backlog
+ *
+ */
+static void tipc_named_add_backlog(struct distr_item *i, u32 type, u32 node)
+{
+ struct distr_queue_item *e;
+ unsigned long now = get_jiffies_64();
+
+ e = kzalloc(sizeof(*e), GFP_ATOMIC);
+ if (!e)
+ return;
+ e->dtype = type;
+ e->node = node;
+ e->expires = now + msecs_to_jiffies(sysctl_tipc_named_timeout);
+ memcpy(e, i, sizeof(*i));
+ list_add_tail(&e->next, &tipc_dist_queue);
+}
+
+/**
+ * tipc_named_process_backlog - try to process any pending name table updates
+ * from the network.
+ */
+void tipc_named_process_backlog(void)
+{
+ struct distr_queue_item *e, *tmp;
+ char addr[16];
+ unsigned long now = get_jiffies_64();
+
+ list_for_each_entry_safe(e, tmp, &tipc_dist_queue, next) {
+ if (time_after(e->expires, now)) {
+ if (!tipc_update_nametbl(&e->i, e->node, e->dtype))
+ continue;
+ } else {
+ tipc_addr_string_fill(addr, e->node);
+ pr_warn_ratelimited("Dropping name table update (%d) of {%u, %u, %u} from %s key=%u\n",
+ e->dtype, ntohl(e->i.type),
+ ntohl(e->i.lower),
+ ntohl(e->i.upper),
+ addr, ntohl(e->i.key));
+ }
+ list_del(&e->next);
+ kfree(e);
+ }
}
/**
@@ -267,51 +371,19 @@ static void named_purge_publ(struct publication *publ)
*/
void tipc_named_rcv(struct sk_buff *buf)
{
- struct publication *publ;
struct tipc_msg *msg = buf_msg(buf);
struct distr_item *item = (struct distr_item *)msg_data(msg);
u32 count = msg_data_sz(msg) / ITEM_SIZE;
+ u32 node = msg_orignode(msg);
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
while (count--) {
- if (msg_type(msg) == PUBLICATION) {
- publ = tipc_nametbl_insert_publ(ntohl(item->type),
- ntohl(item->lower),
- ntohl(item->upper),
- TIPC_CLUSTER_SCOPE,
- msg_orignode(msg),
- ntohl(item->ref),
- ntohl(item->key));
- if (publ) {
- tipc_nodesub_subscribe(&publ->subscr,
- msg_orignode(msg),
- publ,
- (net_ev_handler)
- named_purge_publ);
- }
- } else if (msg_type(msg) == WITHDRAWAL) {
- publ = tipc_nametbl_remove_publ(ntohl(item->type),
- ntohl(item->lower),
- msg_orignode(msg),
- ntohl(item->ref),
- ntohl(item->key));
-
- if (publ) {
- tipc_nodesub_unsubscribe(&publ->subscr);
- kfree(publ);
- } else {
- pr_err("Unable to remove publication by node 0x%x\n"
- " (type=%u, lower=%u, ref=%u, key=%u)\n",
- msg_orignode(msg), ntohl(item->type),
- ntohl(item->lower), ntohl(item->ref),
- ntohl(item->key));
- }
- } else {
- pr_warn("Unrecognized name table message received\n");
- }
+ if (!tipc_update_nametbl(item, node, msg_type(msg)))
+ tipc_named_add_backlog(item, msg_type(msg), node);
item++;
}
- write_unlock_bh(&tipc_nametbl_lock);
+ tipc_named_process_backlog();
+ spin_unlock_bh(&tipc_nametbl_lock);
kfree_skb(buf);
}
@@ -327,11 +399,12 @@ void tipc_named_reinit(void)
struct publication *publ;
int scope;
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
for (scope = TIPC_ZONE_SCOPE; scope <= TIPC_NODE_SCOPE; scope++)
- list_for_each_entry(publ, &publ_lists[scope]->list, local_list)
+ list_for_each_entry_rcu(publ, &tipc_nametbl->publ_list[scope],
+ local_list)
publ->node = tipc_own_addr;
- write_unlock_bh(&tipc_nametbl_lock);
+ spin_unlock_bh(&tipc_nametbl_lock);
}
diff --git a/net/tipc/name_distr.h b/net/tipc/name_distr.h
index 8afe32b7fc9..cef55cedcfb 100644
--- a/net/tipc/name_distr.h
+++ b/net/tipc/name_distr.h
@@ -73,5 +73,7 @@ void named_cluster_distribute(struct sk_buff *buf);
void tipc_named_node_up(u32 dnode);
void tipc_named_rcv(struct sk_buff *buf);
void tipc_named_reinit(void);
+void tipc_named_process_backlog(void);
+void tipc_publ_notify(struct list_head *nsub_list, u32 addr);
#endif
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 9d7d37d9518..c8df0223371 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -1,8 +1,8 @@
/*
* net/tipc/name_table.c: TIPC name table code
*
- * Copyright (c) 2000-2006, Ericsson AB
- * Copyright (c) 2004-2008, 2010-2011, Wind River Systems
+ * Copyright (c) 2000-2006, 2014, Ericsson AB
+ * Copyright (c) 2004-2008, 2010-2014, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -39,10 +39,15 @@
#include "name_table.h"
#include "name_distr.h"
#include "subscr.h"
-#include "port.h"
#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
+static const struct nla_policy
+tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {
+ [TIPC_NLA_NAME_TABLE_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED }
+};
+
/**
* struct name_info - name sequence publication info
* @node_list: circular list of publications made by own node
@@ -87,6 +92,7 @@ struct sub_seq {
* @ns_list: links to adjacent name sequences in hash chain
* @subscriptions: list of subscriptions for this 'type'
* @lock: spinlock controlling access to publication lists of all sub-sequences
+ * @rcu: RCU callback head used for deferred freeing
*/
struct name_seq {
u32 type;
@@ -96,21 +102,11 @@ struct name_seq {
struct hlist_node ns_list;
struct list_head subscriptions;
spinlock_t lock;
+ struct rcu_head rcu;
};
-/**
- * struct name_table - table containing all existing port name publications
- * @types: pointer to fixed-sized array of name sequence lists,
- * accessed via hashing on 'type'; name sequence lists are *not* sorted
- * @local_publ_count: number of publications issued by this node
- */
-struct name_table {
- struct hlist_head *types;
- u32 local_publ_count;
-};
-
-static struct name_table table;
-DEFINE_RWLOCK(tipc_nametbl_lock);
+struct name_table *tipc_nametbl;
+DEFINE_SPINLOCK(tipc_nametbl_lock);
static int hash(int x)
{
@@ -137,9 +133,7 @@ static struct publication *publ_create(u32 type, u32 lower, u32 upper,
publ->node = node;
publ->ref = port_ref;
publ->key = key;
- INIT_LIST_HEAD(&publ->local_list);
INIT_LIST_HEAD(&publ->pport_list);
- INIT_LIST_HEAD(&publ->subscr.nodesub_list);
return publ;
}
@@ -174,22 +168,10 @@ static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_hea
nseq->alloc = 1;
INIT_HLIST_NODE(&nseq->ns_list);
INIT_LIST_HEAD(&nseq->subscriptions);
- hlist_add_head(&nseq->ns_list, seq_head);
+ hlist_add_head_rcu(&nseq->ns_list, seq_head);
return nseq;
}
-/*
- * nameseq_delete_empty - deletes a name sequence structure if now unused
- */
-static void nameseq_delete_empty(struct name_seq *seq)
-{
- if (!seq->first_free && list_empty(&seq->subscriptions)) {
- hlist_del_init(&seq->ns_list);
- kfree(seq->sseqs);
- kfree(seq);
- }
-}
-
/**
* nameseq_find_subseq - find sub-sequence (if any) matching a name instance
*
@@ -262,8 +244,6 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
/* Lower end overlaps existing entry => need an exact match */
if ((sseq->lower != lower) || (sseq->upper != upper)) {
- pr_warn("Cannot publish {%u,%u,%u}, overlap error\n",
- type, lower, upper);
return NULL;
}
@@ -285,8 +265,6 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
/* Fail if upper end overlaps into an existing entry */
if ((inspos < nseq->first_free) &&
(upper >= nseq->sseqs[inspos].lower)) {
- pr_warn("Cannot publish {%u,%u,%u}, overlap error\n",
- type, lower, upper);
return NULL;
}
@@ -474,8 +452,8 @@ static struct name_seq *nametbl_find_seq(u32 type)
struct hlist_head *seq_head;
struct name_seq *ns;
- seq_head = &table.types[hash(type)];
- hlist_for_each_entry(ns, seq_head, ns_list) {
+ seq_head = &tipc_nametbl->seq_hlist[hash(type)];
+ hlist_for_each_entry_rcu(ns, seq_head, ns_list) {
if (ns->type == type)
return ns;
}
@@ -486,7 +464,9 @@ static struct name_seq *nametbl_find_seq(u32 type)
struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
u32 scope, u32 node, u32 port, u32 key)
{
+ struct publication *publ;
struct name_seq *seq = nametbl_find_seq(type);
+ int index = hash(type);
if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE) ||
(lower > upper)) {
@@ -496,12 +476,16 @@ struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
}
if (!seq)
- seq = tipc_nameseq_create(type, &table.types[hash(type)]);
+ seq = tipc_nameseq_create(type,
+ &tipc_nametbl->seq_hlist[index]);
if (!seq)
return NULL;
- return tipc_nameseq_insert_publ(seq, type, lower, upper,
+ spin_lock_bh(&seq->lock);
+ publ = tipc_nameseq_insert_publ(seq, type, lower, upper,
scope, node, port, key);
+ spin_unlock_bh(&seq->lock);
+ return publ;
}
struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
@@ -513,8 +497,16 @@ struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
if (!seq)
return NULL;
+ spin_lock_bh(&seq->lock);
publ = tipc_nameseq_remove_publ(seq, lower, node, ref, key);
- nameseq_delete_empty(seq);
+ if (!seq->first_free && list_empty(&seq->subscriptions)) {
+ hlist_del_init_rcu(&seq->ns_list);
+ kfree(seq->sseqs);
+ spin_unlock_bh(&seq->lock);
+ kfree_rcu(seq, rcu);
+ return publ;
+ }
+ spin_unlock_bh(&seq->lock);
return publ;
}
@@ -543,14 +535,14 @@ u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
if (!tipc_in_scope(*destnode, tipc_own_addr))
return 0;
- read_lock_bh(&tipc_nametbl_lock);
+ rcu_read_lock();
seq = nametbl_find_seq(type);
if (unlikely(!seq))
goto not_found;
+ spin_lock_bh(&seq->lock);
sseq = nameseq_find_subseq(seq, instance);
if (unlikely(!sseq))
- goto not_found;
- spin_lock_bh(&seq->lock);
+ goto no_match;
info = sseq->info;
/* Closest-First Algorithm */
@@ -600,7 +592,7 @@ u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
no_match:
spin_unlock_bh(&seq->lock);
not_found:
- read_unlock_bh(&tipc_nametbl_lock);
+ rcu_read_unlock();
*destnode = node;
return ref;
}
@@ -626,13 +618,12 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
struct name_info *info;
int res = 0;
- read_lock_bh(&tipc_nametbl_lock);
+ rcu_read_lock();
seq = nametbl_find_seq(type);
if (!seq)
goto exit;
spin_lock_bh(&seq->lock);
-
sseq = seq->sseqs + nameseq_locate_subseq(seq, lower);
sseq_stop = seq->sseqs + seq->first_free;
for (; sseq != sseq_stop; sseq++) {
@@ -650,10 +641,9 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
if (info->cluster_list_size != info->node_list_size)
res = 1;
}
-
spin_unlock_bh(&seq->lock);
exit:
- read_unlock_bh(&tipc_nametbl_lock);
+ rcu_read_unlock();
return res;
}
@@ -666,20 +656,23 @@ struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
struct publication *publ;
struct sk_buff *buf = NULL;
- if (table.local_publ_count >= TIPC_MAX_PUBLICATIONS) {
+ spin_lock_bh(&tipc_nametbl_lock);
+ if (tipc_nametbl->local_publ_count >= TIPC_MAX_PUBLICATIONS) {
pr_warn("Publication failed, local publication limit reached (%u)\n",
TIPC_MAX_PUBLICATIONS);
+ spin_unlock_bh(&tipc_nametbl_lock);
return NULL;
}
- write_lock_bh(&tipc_nametbl_lock);
publ = tipc_nametbl_insert_publ(type, lower, upper, scope,
tipc_own_addr, port_ref, key);
if (likely(publ)) {
- table.local_publ_count++;
+ tipc_nametbl->local_publ_count++;
buf = tipc_named_publish(publ);
+ /* Any pending external events? */
+ tipc_named_process_backlog();
}
- write_unlock_bh(&tipc_nametbl_lock);
+ spin_unlock_bh(&tipc_nametbl_lock);
if (buf)
named_cluster_distribute(buf);
@@ -692,25 +685,28 @@ struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key)
{
struct publication *publ;
- struct sk_buff *buf;
+ struct sk_buff *skb = NULL;
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
publ = tipc_nametbl_remove_publ(type, lower, tipc_own_addr, ref, key);
if (likely(publ)) {
- table.local_publ_count--;
- buf = tipc_named_withdraw(publ);
- write_unlock_bh(&tipc_nametbl_lock);
+ tipc_nametbl->local_publ_count--;
+ skb = tipc_named_withdraw(publ);
+ /* Any pending external events? */
+ tipc_named_process_backlog();
list_del_init(&publ->pport_list);
- kfree(publ);
+ kfree_rcu(publ, rcu);
+ } else {
+ pr_err("Unable to remove local publication\n"
+ "(type=%u, lower=%u, ref=%u, key=%u)\n",
+ type, lower, ref, key);
+ }
+ spin_unlock_bh(&tipc_nametbl_lock);
- if (buf)
- named_cluster_distribute(buf);
+ if (skb) {
+ named_cluster_distribute(skb);
return 1;
}
- write_unlock_bh(&tipc_nametbl_lock);
- pr_err("Unable to remove local publication\n"
- "(type=%u, lower=%u, ref=%u, key=%u)\n",
- type, lower, ref, key);
return 0;
}
@@ -720,12 +716,14 @@ int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key)
void tipc_nametbl_subscribe(struct tipc_subscription *s)
{
u32 type = s->seq.type;
+ int index = hash(type);
struct name_seq *seq;
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
seq = nametbl_find_seq(type);
if (!seq)
- seq = tipc_nameseq_create(type, &table.types[hash(type)]);
+ seq = tipc_nameseq_create(type,
+ &tipc_nametbl->seq_hlist[index]);
if (seq) {
spin_lock_bh(&seq->lock);
tipc_nameseq_subscribe(seq, s);
@@ -734,7 +732,7 @@ void tipc_nametbl_subscribe(struct tipc_subscription *s)
pr_warn("Failed to create subscription for {%u,%u,%u}\n",
s->seq.type, s->seq.lower, s->seq.upper);
}
- write_unlock_bh(&tipc_nametbl_lock);
+ spin_unlock_bh(&tipc_nametbl_lock);
}
/**
@@ -744,18 +742,23 @@ void tipc_nametbl_unsubscribe(struct tipc_subscription *s)
{
struct name_seq *seq;
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
seq = nametbl_find_seq(s->seq.type);
if (seq != NULL) {
spin_lock_bh(&seq->lock);
list_del_init(&s->nameseq_list);
- spin_unlock_bh(&seq->lock);
- nameseq_delete_empty(seq);
+ if (!seq->first_free && list_empty(&seq->subscriptions)) {
+ hlist_del_init_rcu(&seq->ns_list);
+ kfree(seq->sseqs);
+ spin_unlock_bh(&seq->lock);
+ kfree_rcu(seq, rcu);
+ } else {
+ spin_unlock_bh(&seq->lock);
+ }
}
- write_unlock_bh(&tipc_nametbl_lock);
+ spin_unlock_bh(&tipc_nametbl_lock);
}
-
/**
* subseq_list - print specified sub-sequence contents into the given buffer
*/
@@ -877,8 +880,8 @@ static int nametbl_list(char *buf, int len, u32 depth_info,
lowbound = 0;
upbound = ~0;
for (i = 0; i < TIPC_NAMETBL_SIZE; i++) {
- seq_head = &table.types[i];
- hlist_for_each_entry(seq, seq_head, ns_list) {
+ seq_head = &tipc_nametbl->seq_hlist[i];
+ hlist_for_each_entry_rcu(seq, seq_head, ns_list) {
ret += nameseq_list(seq, buf + ret, len - ret,
depth, seq->type,
lowbound, upbound, i);
@@ -893,8 +896,8 @@ static int nametbl_list(char *buf, int len, u32 depth_info,
}
ret += nametbl_header(buf + ret, len - ret, depth);
i = hash(type);
- seq_head = &table.types[i];
- hlist_for_each_entry(seq, seq_head, ns_list) {
+ seq_head = &tipc_nametbl->seq_hlist[i];
+ hlist_for_each_entry_rcu(seq, seq_head, ns_list) {
if (seq->type == type) {
ret += nameseq_list(seq, buf + ret, len - ret,
depth, type,
@@ -926,11 +929,11 @@ struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space)
pb = TLV_DATA(rep_tlv);
pb_len = ULTRA_STRING_MAX_LEN;
argv = (struct tipc_name_table_query *)TLV_DATA(req_tlv_area);
- read_lock_bh(&tipc_nametbl_lock);
+ rcu_read_lock();
str_len = nametbl_list(pb, pb_len, ntohl(argv->depth),
ntohl(argv->type),
ntohl(argv->lowbound), ntohl(argv->upbound));
- read_unlock_bh(&tipc_nametbl_lock);
+ rcu_read_unlock();
str_len += 1; /* for "\0" */
skb_put(buf, TLV_SPACE(str_len));
TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
@@ -940,12 +943,18 @@ struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space)
int tipc_nametbl_init(void)
{
- table.types = kcalloc(TIPC_NAMETBL_SIZE, sizeof(struct hlist_head),
- GFP_ATOMIC);
- if (!table.types)
+ int i;
+
+ tipc_nametbl = kzalloc(sizeof(*tipc_nametbl), GFP_ATOMIC);
+ if (!tipc_nametbl)
return -ENOMEM;
- table.local_publ_count = 0;
+ for (i = 0; i < TIPC_NAMETBL_SIZE; i++)
+ INIT_HLIST_HEAD(&tipc_nametbl->seq_hlist[i]);
+
+ INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_ZONE_SCOPE]);
+ INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_CLUSTER_SCOPE]);
+ INIT_LIST_HEAD(&tipc_nametbl->publ_list[TIPC_NODE_SCOPE]);
return 0;
}
@@ -960,17 +969,19 @@ static void tipc_purge_publications(struct name_seq *seq)
struct sub_seq *sseq;
struct name_info *info;
- if (!seq->sseqs) {
- nameseq_delete_empty(seq);
- return;
- }
+ spin_lock_bh(&seq->lock);
sseq = seq->sseqs;
info = sseq->info;
list_for_each_entry_safe(publ, safe, &info->zone_list, zone_list) {
tipc_nametbl_remove_publ(publ->type, publ->lower, publ->node,
publ->ref, publ->key);
- kfree(publ);
+ kfree_rcu(publ, rcu);
}
+ hlist_del_init_rcu(&seq->ns_list);
+ kfree(seq->sseqs);
+ spin_unlock_bh(&seq->lock);
+
+ kfree_rcu(seq, rcu);
}
void tipc_nametbl_stop(void)
@@ -978,21 +989,202 @@ void tipc_nametbl_stop(void)
u32 i;
struct name_seq *seq;
struct hlist_head *seq_head;
- struct hlist_node *safe;
/* Verify name table is empty and purge any lingering
* publications, then release the name table
*/
- write_lock_bh(&tipc_nametbl_lock);
+ spin_lock_bh(&tipc_nametbl_lock);
for (i = 0; i < TIPC_NAMETBL_SIZE; i++) {
- if (hlist_empty(&table.types[i]))
+ if (hlist_empty(&tipc_nametbl->seq_hlist[i]))
continue;
- seq_head = &table.types[i];
- hlist_for_each_entry_safe(seq, safe, seq_head, ns_list) {
+ seq_head = &tipc_nametbl->seq_hlist[i];
+ hlist_for_each_entry_rcu(seq, seq_head, ns_list) {
tipc_purge_publications(seq);
}
}
- kfree(table.types);
- table.types = NULL;
- write_unlock_bh(&tipc_nametbl_lock);
+ spin_unlock_bh(&tipc_nametbl_lock);
+
+ synchronize_net();
+ kfree(tipc_nametbl);
+
+}
+
+static int __tipc_nl_add_nametable_publ(struct tipc_nl_msg *msg,
+ struct name_seq *seq,
+ struct sub_seq *sseq, u32 *last_publ)
+{
+ void *hdr;
+ struct nlattr *attrs;
+ struct nlattr *publ;
+ struct publication *p;
+
+ if (*last_publ) {
+ list_for_each_entry(p, &sseq->info->zone_list, zone_list)
+ if (p->key == *last_publ)
+ break;
+ if (p->key != *last_publ)
+ return -EPIPE;
+ } else {
+ p = list_first_entry(&sseq->info->zone_list, struct publication,
+ zone_list);
+ }
+
+ list_for_each_entry_from(p, &sseq->info->zone_list, zone_list) {
+ *last_publ = p->key;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq,
+ &tipc_genl_v2_family, NLM_F_MULTI,
+ TIPC_NL_NAME_TABLE_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_NAME_TABLE);
+ if (!attrs)
+ goto msg_full;
+
+ publ = nla_nest_start(msg->skb, TIPC_NLA_NAME_TABLE_PUBL);
+ if (!publ)
+ goto attr_msg_full;
+
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_TYPE, seq->type))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_LOWER, sseq->lower))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_UPPER, sseq->upper))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_SCOPE, p->scope))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_NODE, p->node))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_REF, p->ref))
+ goto publ_msg_full;
+ if (nla_put_u32(msg->skb, TIPC_NLA_PUBL_KEY, p->key))
+ goto publ_msg_full;
+
+ nla_nest_end(msg->skb, publ);
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+ }
+ *last_publ = 0;
+
+ return 0;
+
+publ_msg_full:
+ nla_nest_cancel(msg->skb, publ);
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+static int __tipc_nl_subseq_list(struct tipc_nl_msg *msg, struct name_seq *seq,
+ u32 *last_lower, u32 *last_publ)
+{
+ struct sub_seq *sseq;
+ struct sub_seq *sseq_start;
+ int err;
+
+ if (*last_lower) {
+ sseq_start = nameseq_find_subseq(seq, *last_lower);
+ if (!sseq_start)
+ return -EPIPE;
+ } else {
+ sseq_start = seq->sseqs;
+ }
+
+ for (sseq = sseq_start; sseq != &seq->sseqs[seq->first_free]; sseq++) {
+ err = __tipc_nl_add_nametable_publ(msg, seq, sseq, last_publ);
+ if (err) {
+ *last_lower = sseq->lower;
+ return err;
+ }
+ }
+ *last_lower = 0;
+
+ return 0;
+}
+
+static int __tipc_nl_seq_list(struct tipc_nl_msg *msg, u32 *last_type,
+ u32 *last_lower, u32 *last_publ)
+{
+ struct hlist_head *seq_head;
+ struct name_seq *seq = NULL;
+ int err;
+ int i;
+
+ if (*last_type)
+ i = hash(*last_type);
+ else
+ i = 0;
+
+ for (; i < TIPC_NAMETBL_SIZE; i++) {
+ seq_head = &tipc_nametbl->seq_hlist[i];
+
+ if (*last_type) {
+ seq = nametbl_find_seq(*last_type);
+ if (!seq)
+ return -EPIPE;
+ } else {
+ hlist_for_each_entry_rcu(seq, seq_head, ns_list)
+ break;
+ if (!seq)
+ continue;
+ }
+
+ hlist_for_each_entry_from_rcu(seq, ns_list) {
+ spin_lock_bh(&seq->lock);
+ err = __tipc_nl_subseq_list(msg, seq, last_lower,
+ last_publ);
+
+ if (err) {
+ *last_type = seq->type;
+ spin_unlock_bh(&seq->lock);
+ return err;
+ }
+ spin_unlock_bh(&seq->lock);
+ }
+ *last_type = 0;
+ }
+ return 0;
+}
+
+int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ int done = cb->args[3];
+ u32 last_type = cb->args[0];
+ u32 last_lower = cb->args[1];
+ u32 last_publ = cb->args[2];
+ struct tipc_nl_msg msg;
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rcu_read_lock();
+ err = __tipc_nl_seq_list(&msg, &last_type, &last_lower, &last_publ);
+ if (!err) {
+ done = 1;
+ } else if (err != -EMSGSIZE) {
+ /* We never set seq or call nl_dump_check_consistent() this
+ * means that setting prev_seq here will cause the consistence
+ * check to fail in the netlink callback handler. Resulting in
+ * the NLMSG_DONE message having the NLM_F_DUMP_INTR flag set if
+ * we got an error.
+ */
+ cb->prev_seq = 1;
+ }
+ rcu_read_unlock();
+
+ cb->args[0] = last_type;
+ cb->args[1] = last_lower;
+ cb->args[2] = last_publ;
+ cb->args[3] = done;
+
+ return skb->len;
}
diff --git a/net/tipc/name_table.h b/net/tipc/name_table.h
index f02f48b9a21..5f0dee92010 100644
--- a/net/tipc/name_table.h
+++ b/net/tipc/name_table.h
@@ -1,7 +1,7 @@
/*
* net/tipc/name_table.h: Include file for TIPC name table code
*
- * Copyright (c) 2000-2006, Ericsson AB
+ * Copyright (c) 2000-2006, 2014, Ericsson AB
* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
* All rights reserved.
*
@@ -37,15 +37,15 @@
#ifndef _TIPC_NAME_TABLE_H
#define _TIPC_NAME_TABLE_H
-#include "node_subscr.h"
-
struct tipc_subscription;
struct tipc_port_list;
/*
* TIPC name types reserved for internal TIPC use (both current and planned)
*/
-#define TIPC_ZM_SRV 3 /* zone master service name type */
+#define TIPC_ZM_SRV 3 /* zone master service name type */
+#define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1)
+#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
/**
* struct publication - info about a published (name or) name sequence
@@ -56,12 +56,13 @@ struct tipc_port_list;
* @node: network address of publishing port's node
* @ref: publishing port
* @key: publication key
- * @subscr: subscription to "node down" event (for off-node publications only)
+ * @nodesub_list: subscription to "node down" event (off-node publication only)
* @local_list: adjacent entries in list of publications made by this node
* @pport_list: adjacent entries in list of publications made by this port
* @node_list: adjacent matching name seq publications with >= node scope
* @cluster_list: adjacent matching name seq publications with >= cluster scope
* @zone_list: adjacent matching name seq publications with >= zone scope
+ * @rcu: RCU callback head used for deferred freeing
*
* Note that the node list, cluster list, and zone list are circular lists.
*/
@@ -73,16 +74,31 @@ struct publication {
u32 node;
u32 ref;
u32 key;
- struct tipc_node_subscr subscr;
+ struct list_head nodesub_list;
struct list_head local_list;
struct list_head pport_list;
struct list_head node_list;
struct list_head cluster_list;
struct list_head zone_list;
+ struct rcu_head rcu;
+};
+
+/**
+ * struct name_table - table containing all existing port name publications
+ * @seq_hlist: name sequence hash lists
+ * @publ_list: pulication lists
+ * @local_publ_count: number of publications issued by this node
+ */
+struct name_table {
+ struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE];
+ struct list_head publ_list[TIPC_PUBL_SCOPE_NUM];
+ u32 local_publ_count;
};
+extern spinlock_t tipc_nametbl_lock;
+extern struct name_table *tipc_nametbl;
-extern rwlock_t tipc_nametbl_lock;
+int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb);
struct sk_buff *tipc_nametbl_get(const void *req_tlv_area, int req_tlv_space);
u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *node);
diff --git a/net/tipc/net.c b/net/tipc/net.c
index 7fcc94998fe..cf13df3cde8 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -38,11 +38,15 @@
#include "net.h"
#include "name_distr.h"
#include "subscr.h"
-#include "port.h"
#include "socket.h"
#include "node.h"
#include "config.h"
+static const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
+ [TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_NET_ID] = { .type = NLA_U32 }
+};
+
/*
* The TIPC locking policy is designed to ensure a very fine locking
* granularity, permitting complete parallel access to individual
@@ -111,7 +115,7 @@ int tipc_net_start(u32 addr)
tipc_own_addr = addr;
tipc_named_reinit();
- tipc_port_reinit();
+ tipc_sk_reinit();
res = tipc_bclink_init();
if (res)
return res;
@@ -139,3 +143,104 @@ void tipc_net_stop(void)
pr_info("Left network mode\n");
}
+
+static int __tipc_nl_add_net(struct tipc_nl_msg *msg)
+{
+ void *hdr;
+ struct nlattr *attrs;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_NET_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_NET);
+ if (!attrs)
+ goto msg_full;
+
+ if (nla_put_u32(msg->skb, TIPC_NLA_NET_ID, tipc_net_id))
+ goto attr_msg_full;
+
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ int done = cb->args[0];
+ struct tipc_nl_msg msg;
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ err = __tipc_nl_add_net(&msg);
+ if (err)
+ goto out;
+
+ done = 1;
+out:
+ cb->args[0] = done;
+
+ return skb->len;
+}
+
+int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+ struct nlattr *attrs[TIPC_NLA_NET_MAX + 1];
+
+ if (!info->attrs[TIPC_NLA_NET])
+ return -EINVAL;
+
+ err = nla_parse_nested(attrs, TIPC_NLA_NET_MAX,
+ info->attrs[TIPC_NLA_NET],
+ tipc_nl_net_policy);
+ if (err)
+ return err;
+
+ if (attrs[TIPC_NLA_NET_ID]) {
+ u32 val;
+
+ /* Can't change net id once TIPC has joined a network */
+ if (tipc_own_addr)
+ return -EPERM;
+
+ val = nla_get_u32(attrs[TIPC_NLA_NET_ID]);
+ if (val < 1 || val > 9999)
+ return -EINVAL;
+
+ tipc_net_id = val;
+ }
+
+ if (attrs[TIPC_NLA_NET_ADDR]) {
+ u32 addr;
+
+ /* Can't change net addr once TIPC has joined a network */
+ if (tipc_own_addr)
+ return -EPERM;
+
+ addr = nla_get_u32(attrs[TIPC_NLA_NET_ADDR]);
+ if (!tipc_addr_node_valid(addr))
+ return -EINVAL;
+
+ rtnl_lock();
+ tipc_net_start(addr);
+ rtnl_unlock();
+ }
+
+ return 0;
+}
diff --git a/net/tipc/net.h b/net/tipc/net.h
index 59ef3388be2..a81c1b9eb15 100644
--- a/net/tipc/net.h
+++ b/net/tipc/net.h
@@ -1,7 +1,7 @@
/*
* net/tipc/net.h: Include file for TIPC network routing code
*
- * Copyright (c) 1995-2006, Ericsson AB
+ * Copyright (c) 1995-2006, 2014, Ericsson AB
* Copyright (c) 2005, 2010-2011, Wind River Systems
* All rights reserved.
*
@@ -37,7 +37,13 @@
#ifndef _TIPC_NET_H
#define _TIPC_NET_H
+#include <net/genetlink.h>
+
int tipc_net_start(u32 addr);
+
void tipc_net_stop(void);
+int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info);
+
#endif
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index ad844d36534..b891e3905bc 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -1,7 +1,7 @@
/*
* net/tipc/netlink.c: TIPC configuration handling
*
- * Copyright (c) 2005-2006, Ericsson AB
+ * Copyright (c) 2005-2006, 2014, Ericsson AB
* Copyright (c) 2005-2007, Wind River Systems
* All rights reserved.
*
@@ -36,6 +36,12 @@
#include "core.h"
#include "config.h"
+#include "socket.h"
+#include "name_table.h"
+#include "bearer.h"
+#include "link.h"
+#include "node.h"
+#include "net.h"
#include <net/genetlink.h>
static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
@@ -68,6 +74,19 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
return 0;
}
+static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
+ [TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, },
+ [TIPC_NLA_BEARER] = { .type = NLA_NESTED, },
+ [TIPC_NLA_SOCK] = { .type = NLA_NESTED, },
+ [TIPC_NLA_PUBL] = { .type = NLA_NESTED, },
+ [TIPC_NLA_LINK] = { .type = NLA_NESTED, },
+ [TIPC_NLA_MEDIA] = { .type = NLA_NESTED, },
+ [TIPC_NLA_NODE] = { .type = NLA_NESTED, },
+ [TIPC_NLA_NET] = { .type = NLA_NESTED, },
+ [TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, }
+};
+
+/* Legacy ASCII API */
static struct genl_family tipc_genl_family = {
.id = GENL_ID_GENERATE,
.name = TIPC_GENL_NAME,
@@ -76,6 +95,7 @@ static struct genl_family tipc_genl_family = {
.maxattr = 0,
};
+/* Legacy ASCII API */
static struct genl_ops tipc_genl_ops[] = {
{
.cmd = TIPC_GENL_CMD,
@@ -83,12 +103,122 @@ static struct genl_ops tipc_genl_ops[] = {
},
};
+/* Users of the legacy API (tipc-config) can't handle that we add operations,
+ * so we have a separate genl handling for the new API.
+ */
+struct genl_family tipc_genl_v2_family = {
+ .id = GENL_ID_GENERATE,
+ .name = TIPC_GENL_V2_NAME,
+ .version = TIPC_GENL_V2_VERSION,
+ .hdrsize = 0,
+ .maxattr = TIPC_NLA_MAX,
+};
+
+static const struct genl_ops tipc_genl_v2_ops[] = {
+ {
+ .cmd = TIPC_NL_BEARER_DISABLE,
+ .doit = tipc_nl_bearer_disable,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_BEARER_ENABLE,
+ .doit = tipc_nl_bearer_enable,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_BEARER_GET,
+ .doit = tipc_nl_bearer_get,
+ .dumpit = tipc_nl_bearer_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_BEARER_SET,
+ .doit = tipc_nl_bearer_set,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_SOCK_GET,
+ .dumpit = tipc_nl_sk_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_PUBL_GET,
+ .dumpit = tipc_nl_publ_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_LINK_GET,
+ .doit = tipc_nl_link_get,
+ .dumpit = tipc_nl_link_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_LINK_SET,
+ .doit = tipc_nl_link_set,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_LINK_RESET_STATS,
+ .doit = tipc_nl_link_reset_stats,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_MEDIA_GET,
+ .doit = tipc_nl_media_get,
+ .dumpit = tipc_nl_media_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_MEDIA_SET,
+ .doit = tipc_nl_media_set,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_NODE_GET,
+ .dumpit = tipc_nl_node_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_NET_GET,
+ .dumpit = tipc_nl_net_dump,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_NET_SET,
+ .doit = tipc_nl_net_set,
+ .policy = tipc_nl_policy,
+ },
+ {
+ .cmd = TIPC_NL_NAME_TABLE_GET,
+ .dumpit = tipc_nl_name_table_dump,
+ .policy = tipc_nl_policy,
+ }
+};
+
+int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
+{
+ u32 maxattr = tipc_genl_v2_family.maxattr;
+
+ *attr = tipc_genl_v2_family.attrbuf;
+ if (!*attr)
+ return -EOPNOTSUPP;
+
+ return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy);
+}
+
int tipc_netlink_start(void)
{
int res;
res = genl_register_family_with_ops(&tipc_genl_family, tipc_genl_ops);
if (res) {
+ pr_err("Failed to register legacy interface\n");
+ return res;
+ }
+
+ res = genl_register_family_with_ops(&tipc_genl_v2_family,
+ tipc_genl_v2_ops);
+ if (res) {
pr_err("Failed to register netlink interface\n");
return res;
}
@@ -98,4 +228,5 @@ int tipc_netlink_start(void)
void tipc_netlink_stop(void)
{
genl_unregister_family(&tipc_genl_family);
+ genl_unregister_family(&tipc_genl_v2_family);
}
diff --git a/net/tipc/ref.h b/net/tipc/netlink.h
index d01aa1df63b..1425c6869de 100644
--- a/net/tipc/ref.h
+++ b/net/tipc/netlink.h
@@ -1,8 +1,7 @@
/*
- * net/tipc/ref.h: Include file for TIPC object registry code
+ * net/tipc/netlink.h: Include file for TIPC netlink code
*
- * Copyright (c) 1991-2006, Ericsson AB
- * Copyright (c) 2005-2006, Wind River Systems
+ * Copyright (c) 2014, Ericsson AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -34,15 +33,16 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#ifndef _TIPC_REF_H
-#define _TIPC_REF_H
+#ifndef _TIPC_NETLINK_H
+#define _TIPC_NETLINK_H
-int tipc_ref_table_init(u32 requested_size, u32 start);
-void tipc_ref_table_stop(void);
+extern struct genl_family tipc_genl_v2_family;
+int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***buf);
-u32 tipc_ref_acquire(void *object, spinlock_t **lock);
-void tipc_ref_discard(u32 ref);
-
-void *tipc_ref_lock(u32 ref);
+struct tipc_nl_msg {
+ struct sk_buff *skb;
+ u32 portid;
+ u32 seq;
+};
#endif
diff --git a/net/tipc/node.c b/net/tipc/node.c
index f7069299943..8d353ec77a6 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -38,6 +38,7 @@
#include "config.h"
#include "node.h"
#include "name_distr.h"
+#include "socket.h"
#define NODE_HTABLE_SIZE 512
@@ -50,6 +51,19 @@ static u32 tipc_num_nodes;
static u32 tipc_num_links;
static DEFINE_SPINLOCK(node_list_lock);
+struct tipc_sock_conn {
+ u32 port;
+ u32 peer_port;
+ u32 peer_node;
+ struct list_head list;
+};
+
+static const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
+ [TIPC_NLA_NODE_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_NODE_ADDR] = { .type = NLA_U32 },
+ [TIPC_NLA_NODE_UP] = { .type = NLA_FLAG }
+};
+
/*
* A trivial power-of-two bitmask technique is used for speed, since this
* operation is done for every incoming TIPC packet. The number of hash table
@@ -99,7 +113,10 @@ struct tipc_node *tipc_node_create(u32 addr)
spin_lock_init(&n_ptr->lock);
INIT_HLIST_NODE(&n_ptr->hash);
INIT_LIST_HEAD(&n_ptr->list);
- INIT_LIST_HEAD(&n_ptr->nsub);
+ INIT_LIST_HEAD(&n_ptr->publ_list);
+ INIT_LIST_HEAD(&n_ptr->conn_sks);
+ skb_queue_head_init(&n_ptr->waiting_sks);
+ __skb_queue_head_init(&n_ptr->bclink.deferred_queue);
hlist_add_head_rcu(&n_ptr->hash, &node_htable[tipc_hashfn(addr)]);
@@ -136,6 +153,71 @@ void tipc_node_stop(void)
spin_unlock_bh(&node_list_lock);
}
+int tipc_node_add_conn(u32 dnode, u32 port, u32 peer_port)
+{
+ struct tipc_node *node;
+ struct tipc_sock_conn *conn;
+
+ if (in_own_node(dnode))
+ return 0;
+
+ node = tipc_node_find(dnode);
+ if (!node) {
+ pr_warn("Connecting sock to node 0x%x failed\n", dnode);
+ return -EHOSTUNREACH;
+ }
+ conn = kmalloc(sizeof(*conn), GFP_ATOMIC);
+ if (!conn)
+ return -EHOSTUNREACH;
+ conn->peer_node = dnode;
+ conn->port = port;
+ conn->peer_port = peer_port;
+
+ tipc_node_lock(node);
+ list_add_tail(&conn->list, &node->conn_sks);
+ tipc_node_unlock(node);
+ return 0;
+}
+
+void tipc_node_remove_conn(u32 dnode, u32 port)
+{
+ struct tipc_node *node;
+ struct tipc_sock_conn *conn, *safe;
+
+ if (in_own_node(dnode))
+ return;
+
+ node = tipc_node_find(dnode);
+ if (!node)
+ return;
+
+ tipc_node_lock(node);
+ list_for_each_entry_safe(conn, safe, &node->conn_sks, list) {
+ if (port != conn->port)
+ continue;
+ list_del(&conn->list);
+ kfree(conn);
+ }
+ tipc_node_unlock(node);
+}
+
+void tipc_node_abort_sock_conns(struct list_head *conns)
+{
+ struct tipc_sock_conn *conn, *safe;
+ struct sk_buff *buf;
+
+ list_for_each_entry_safe(conn, safe, conns, list) {
+ buf = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
+ SHORT_H_SIZE, 0, tipc_own_addr,
+ conn->peer_node, conn->port,
+ conn->peer_port, TIPC_ERR_NO_NODE);
+ if (likely(buf))
+ tipc_sk_rcv(buf);
+ list_del(&conn->list);
+ kfree(conn);
+ }
+}
+
/**
* tipc_node_link_up - handle addition of link
*
@@ -144,11 +226,11 @@ void tipc_node_stop(void)
void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
{
struct tipc_link **active = &n_ptr->active_links[0];
- u32 addr = n_ptr->addr;
n_ptr->working_links++;
- tipc_nametbl_publish(TIPC_LINK_STATE, addr, addr, TIPC_NODE_SCOPE,
- l_ptr->bearer_id, addr);
+ n_ptr->action_flags |= TIPC_NOTIFY_LINK_UP;
+ n_ptr->link_id = l_ptr->peer_bearer_id << 16 | l_ptr->bearer_id;
+
pr_info("Established link <%s> on network plane %c\n",
l_ptr->name, l_ptr->net_plane);
@@ -209,10 +291,10 @@ static void node_select_active_links(struct tipc_node *n_ptr)
void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
{
struct tipc_link **active;
- u32 addr = n_ptr->addr;
n_ptr->working_links--;
- tipc_nametbl_withdraw(TIPC_LINK_STATE, addr, l_ptr->bearer_id, addr);
+ n_ptr->action_flags |= TIPC_NOTIFY_LINK_DOWN;
+ n_ptr->link_id = l_ptr->peer_bearer_id << 16 | l_ptr->bearer_id;
if (!tipc_link_is_active(l_ptr)) {
pr_info("Lost standby link <%s> on network plane %c\n",
@@ -300,8 +382,7 @@ static void node_lost_contact(struct tipc_node *n_ptr)
/* Flush broadcast link info associated with lost node */
if (n_ptr->bclink.recv_permitted) {
- kfree_skb_list(n_ptr->bclink.deferred_head);
- n_ptr->bclink.deferred_size = 0;
+ __skb_queue_purge(&n_ptr->bclink.deferred_queue);
if (n_ptr->bclink.reasm_buf) {
kfree_skb(n_ptr->bclink.reasm_buf);
@@ -474,25 +555,145 @@ int tipc_node_get_linkname(u32 bearer_id, u32 addr, char *linkname, size_t len)
void tipc_node_unlock(struct tipc_node *node)
{
LIST_HEAD(nsub_list);
+ LIST_HEAD(conn_sks);
+ struct sk_buff_head waiting_sks;
u32 addr = 0;
+ int flags = node->action_flags;
+ u32 link_id = 0;
- if (likely(!node->action_flags)) {
+ if (likely(!flags)) {
spin_unlock_bh(&node->lock);
return;
}
- if (node->action_flags & TIPC_NOTIFY_NODE_DOWN) {
- list_replace_init(&node->nsub, &nsub_list);
- node->action_flags &= ~TIPC_NOTIFY_NODE_DOWN;
- }
- if (node->action_flags & TIPC_NOTIFY_NODE_UP) {
- node->action_flags &= ~TIPC_NOTIFY_NODE_UP;
- addr = node->addr;
+ addr = node->addr;
+ link_id = node->link_id;
+ __skb_queue_head_init(&waiting_sks);
+
+ if (flags & TIPC_WAKEUP_USERS)
+ skb_queue_splice_init(&node->waiting_sks, &waiting_sks);
+
+ if (flags & TIPC_NOTIFY_NODE_DOWN) {
+ list_replace_init(&node->publ_list, &nsub_list);
+ list_replace_init(&node->conn_sks, &conn_sks);
}
+ node->action_flags &= ~(TIPC_WAKEUP_USERS | TIPC_NOTIFY_NODE_DOWN |
+ TIPC_NOTIFY_NODE_UP | TIPC_NOTIFY_LINK_UP |
+ TIPC_NOTIFY_LINK_DOWN |
+ TIPC_WAKEUP_BCAST_USERS);
+
spin_unlock_bh(&node->lock);
+ while (!skb_queue_empty(&waiting_sks))
+ tipc_sk_rcv(__skb_dequeue(&waiting_sks));
+
+ if (!list_empty(&conn_sks))
+ tipc_node_abort_sock_conns(&conn_sks);
+
if (!list_empty(&nsub_list))
- tipc_nodesub_notify(&nsub_list);
- if (addr)
+ tipc_publ_notify(&nsub_list, addr);
+
+ if (flags & TIPC_WAKEUP_BCAST_USERS)
+ tipc_bclink_wakeup_users();
+
+ if (flags & TIPC_NOTIFY_NODE_UP)
tipc_named_node_up(addr);
+
+ if (flags & TIPC_NOTIFY_LINK_UP)
+ tipc_nametbl_publish(TIPC_LINK_STATE, addr, addr,
+ TIPC_NODE_SCOPE, link_id, addr);
+
+ if (flags & TIPC_NOTIFY_LINK_DOWN)
+ tipc_nametbl_withdraw(TIPC_LINK_STATE, addr,
+ link_id, addr);
+}
+
+/* Caller should hold node lock for the passed node */
+static int __tipc_nl_add_node(struct tipc_nl_msg *msg, struct tipc_node *node)
+{
+ void *hdr;
+ struct nlattr *attrs;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ NLM_F_MULTI, TIPC_NL_NODE_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_NODE);
+ if (!attrs)
+ goto msg_full;
+
+ if (nla_put_u32(msg->skb, TIPC_NLA_NODE_ADDR, node->addr))
+ goto attr_msg_full;
+ if (tipc_node_is_up(node))
+ if (nla_put_flag(msg->skb, TIPC_NLA_NODE_UP))
+ goto attr_msg_full;
+
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ int done = cb->args[0];
+ int last_addr = cb->args[1];
+ struct tipc_node *node;
+ struct tipc_nl_msg msg;
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rcu_read_lock();
+
+ if (last_addr && !tipc_node_find(last_addr)) {
+ rcu_read_unlock();
+ /* We never set seq or call nl_dump_check_consistent() this
+ * means that setting prev_seq here will cause the consistence
+ * check to fail in the netlink callback handler. Resulting in
+ * the NLMSG_DONE message having the NLM_F_DUMP_INTR flag set if
+ * the node state changed while we released the lock.
+ */
+ cb->prev_seq = 1;
+ return -EPIPE;
+ }
+
+ list_for_each_entry_rcu(node, &tipc_node_list, list) {
+ if (last_addr) {
+ if (node->addr == last_addr)
+ last_addr = 0;
+ else
+ continue;
+ }
+
+ tipc_node_lock(node);
+ err = __tipc_nl_add_node(&msg, node);
+ if (err) {
+ last_addr = node->addr;
+ tipc_node_unlock(node);
+ goto out;
+ }
+
+ tipc_node_unlock(node);
+ }
+ done = 1;
+out:
+ cb->args[0] = done;
+ cb->args[1] = last_addr;
+ rcu_read_unlock();
+
+ return skb->len;
}
diff --git a/net/tipc/node.h b/net/tipc/node.h
index b61716a8218..cbe0e950f1c 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -1,7 +1,7 @@
/*
* net/tipc/node.h: Include file for TIPC node management routines
*
- * Copyright (c) 2000-2006, Ericsson AB
+ * Copyright (c) 2000-2006, 2014, Ericsson AB
* Copyright (c) 2005, 2010-2014, Wind River Systems
* All rights reserved.
*
@@ -37,7 +37,6 @@
#ifndef _TIPC_NODE_H
#define _TIPC_NODE_H
-#include "node_subscr.h"
#include "addr.h"
#include "net.h"
#include "bearer.h"
@@ -53,12 +52,17 @@
* TIPC_WAIT_OWN_LINKS_DOWN: wait until peer node is declared down
* TIPC_NOTIFY_NODE_DOWN: notify node is down
* TIPC_NOTIFY_NODE_UP: notify node is up
+ * TIPC_DISTRIBUTE_NAME: publish or withdraw link state name type
*/
enum {
TIPC_WAIT_PEER_LINKS_DOWN = (1 << 1),
TIPC_WAIT_OWN_LINKS_DOWN = (1 << 2),
TIPC_NOTIFY_NODE_DOWN = (1 << 3),
- TIPC_NOTIFY_NODE_UP = (1 << 4)
+ TIPC_NOTIFY_NODE_UP = (1 << 4),
+ TIPC_WAKEUP_USERS = (1 << 5),
+ TIPC_WAKEUP_BCAST_USERS = (1 << 6),
+ TIPC_NOTIFY_LINK_UP = (1 << 7),
+ TIPC_NOTIFY_LINK_DOWN = (1 << 8)
};
/**
@@ -67,9 +71,7 @@ enum {
* @last_in: sequence # of last in-sequence b'cast message received from node
* @last_sent: sequence # of last b'cast message sent by node
* @oos_state: state tracker for handling OOS b'cast messages
- * @deferred_size: number of OOS b'cast messages in deferred queue
- * @deferred_head: oldest OOS b'cast message received from node
- * @deferred_tail: newest OOS b'cast message received from node
+ * @deferred_queue: deferred queue saved OOS b'cast message received from node
* @reasm_buf: broadcast reassembly queue head from node
* @recv_permitted: true if node is allowed to receive b'cast messages
*/
@@ -79,8 +81,7 @@ struct tipc_node_bclink {
u32 last_sent;
u32 oos_state;
u32 deferred_size;
- struct sk_buff *deferred_head;
- struct sk_buff *deferred_tail;
+ struct sk_buff_head deferred_queue;
struct sk_buff *reasm_buf;
bool recv_permitted;
};
@@ -98,7 +99,8 @@ struct tipc_node_bclink {
* @working_links: number of working links to node (both active and standby)
* @link_cnt: number of links to node
* @signature: node instance identifier
- * @nsub: list of "node down" subscriptions monitoring node
+ * @link_id: local and remote bearer ids of changing link, if any
+ * @publ_list: list of publications
* @rcu: rcu struct for tipc_node
*/
struct tipc_node {
@@ -114,7 +116,10 @@ struct tipc_node {
int link_cnt;
int working_links;
u32 signature;
- struct list_head nsub;
+ u32 link_id;
+ struct list_head publ_list;
+ struct sk_buff_head waiting_sks;
+ struct list_head conn_sks;
struct rcu_head rcu;
};
@@ -133,6 +138,10 @@ struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)
struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space);
int tipc_node_get_linkname(u32 bearer_id, u32 node, char *linkname, size_t len);
void tipc_node_unlock(struct tipc_node *node);
+int tipc_node_add_conn(u32 dnode, u32 port, u32 peer_port);
+void tipc_node_remove_conn(u32 dnode, u32 port);
+
+int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb);
static inline void tipc_node_lock(struct tipc_node *node)
{
diff --git a/net/tipc/node_subscr.c b/net/tipc/node_subscr.c
deleted file mode 100644
index 2d13eea8574..00000000000
--- a/net/tipc/node_subscr.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * net/tipc/node_subscr.c: TIPC "node down" subscription handling
- *
- * Copyright (c) 1995-2006, Ericsson AB
- * Copyright (c) 2005, 2010-2011, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "core.h"
-#include "node_subscr.h"
-#include "node.h"
-
-/**
- * tipc_nodesub_subscribe - create "node down" subscription for specified node
- */
-void tipc_nodesub_subscribe(struct tipc_node_subscr *node_sub, u32 addr,
- void *usr_handle, net_ev_handler handle_down)
-{
- if (in_own_node(addr)) {
- node_sub->node = NULL;
- return;
- }
-
- node_sub->node = tipc_node_find(addr);
- if (!node_sub->node) {
- pr_warn("Node subscription rejected, unknown node 0x%x\n",
- addr);
- return;
- }
- node_sub->handle_node_down = handle_down;
- node_sub->usr_handle = usr_handle;
-
- tipc_node_lock(node_sub->node);
- list_add_tail(&node_sub->nodesub_list, &node_sub->node->nsub);
- tipc_node_unlock(node_sub->node);
-}
-
-/**
- * tipc_nodesub_unsubscribe - cancel "node down" subscription (if any)
- */
-void tipc_nodesub_unsubscribe(struct tipc_node_subscr *node_sub)
-{
- if (!node_sub->node)
- return;
-
- tipc_node_lock(node_sub->node);
- list_del_init(&node_sub->nodesub_list);
- tipc_node_unlock(node_sub->node);
-}
-
-/**
- * tipc_nodesub_notify - notify subscribers that a node is unreachable
- *
- * Note: node is locked by caller
- */
-void tipc_nodesub_notify(struct list_head *nsub_list)
-{
- struct tipc_node_subscr *ns, *safe;
- net_ev_handler handle_node_down;
-
- list_for_each_entry_safe(ns, safe, nsub_list, nodesub_list) {
- handle_node_down = ns->handle_node_down;
- if (handle_node_down) {
- ns->handle_node_down = NULL;
- handle_node_down(ns->usr_handle);
- }
- }
-}
diff --git a/net/tipc/node_subscr.h b/net/tipc/node_subscr.h
deleted file mode 100644
index d91b8cc81e3..00000000000
--- a/net/tipc/node_subscr.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * net/tipc/node_subscr.h: Include file for TIPC "node down" subscription handling
- *
- * Copyright (c) 1995-2006, Ericsson AB
- * Copyright (c) 2005, 2010-2011, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _TIPC_NODE_SUBSCR_H
-#define _TIPC_NODE_SUBSCR_H
-
-#include "addr.h"
-
-typedef void (*net_ev_handler) (void *usr_handle);
-
-/**
- * struct tipc_node_subscr - "node down" subscription entry
- * @node: ptr to node structure of interest (or NULL, if none)
- * @handle_node_down: routine to invoke when node fails
- * @usr_handle: argument to pass to routine when node fails
- * @nodesub_list: adjacent entries in list of subscriptions for the node
- */
-struct tipc_node_subscr {
- struct tipc_node *node;
- net_ev_handler handle_node_down;
- void *usr_handle;
- struct list_head nodesub_list;
-};
-
-void tipc_nodesub_subscribe(struct tipc_node_subscr *node_sub, u32 addr,
- void *usr_handle, net_ev_handler handle_down);
-void tipc_nodesub_unsubscribe(struct tipc_node_subscr *node_sub);
-void tipc_nodesub_notify(struct list_head *nsub_list);
-
-#endif
diff --git a/net/tipc/port.c b/net/tipc/port.c
deleted file mode 100644
index 7e096a5e770..00000000000
--- a/net/tipc/port.c
+++ /dev/null
@@ -1,514 +0,0 @@
-/*
- * net/tipc/port.c: TIPC port code
- *
- * Copyright (c) 1992-2007, 2014, Ericsson AB
- * Copyright (c) 2004-2008, 2010-2013, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "core.h"
-#include "config.h"
-#include "port.h"
-#include "name_table.h"
-#include "socket.h"
-
-/* Connection management: */
-#define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
-
-#define MAX_REJECT_SIZE 1024
-
-DEFINE_SPINLOCK(tipc_port_list_lock);
-
-static LIST_HEAD(ports);
-static void port_handle_node_down(unsigned long ref);
-static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err);
-static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err);
-static void port_timeout(unsigned long ref);
-
-/**
- * tipc_port_peer_msg - verify message was sent by connected port's peer
- *
- * Handles cases where the node's network address has changed from
- * the default of <0.0.0> to its configured setting.
- */
-int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg)
-{
- u32 peernode;
- u32 orignode;
-
- if (msg_origport(msg) != tipc_port_peerport(p_ptr))
- return 0;
-
- orignode = msg_orignode(msg);
- peernode = tipc_port_peernode(p_ptr);
- return (orignode == peernode) ||
- (!orignode && (peernode == tipc_own_addr)) ||
- (!peernode && (orignode == tipc_own_addr));
-}
-
-/* tipc_port_init - intiate TIPC port and lock it
- *
- * Returns obtained reference if initialization is successful, zero otherwise
- */
-u32 tipc_port_init(struct tipc_port *p_ptr,
- const unsigned int importance)
-{
- struct tipc_msg *msg;
- u32 ref;
-
- ref = tipc_ref_acquire(p_ptr, &p_ptr->lock);
- if (!ref) {
- pr_warn("Port registration failed, ref. table exhausted\n");
- return 0;
- }
-
- p_ptr->max_pkt = MAX_PKT_DEFAULT;
- p_ptr->ref = ref;
- INIT_LIST_HEAD(&p_ptr->wait_list);
- INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
- k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
- INIT_LIST_HEAD(&p_ptr->publications);
- INIT_LIST_HEAD(&p_ptr->port_list);
-
- /*
- * Must hold port list lock while initializing message header template
- * to ensure a change to node's own network address doesn't result
- * in template containing out-dated network address information
- */
- spin_lock_bh(&tipc_port_list_lock);
- msg = &p_ptr->phdr;
- tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
- msg_set_origport(msg, ref);
- list_add_tail(&p_ptr->port_list, &ports);
- spin_unlock_bh(&tipc_port_list_lock);
- return ref;
-}
-
-void tipc_port_destroy(struct tipc_port *p_ptr)
-{
- struct sk_buff *buf = NULL;
- struct tipc_msg *msg = NULL;
- u32 peer;
-
- tipc_withdraw(p_ptr, 0, NULL);
-
- spin_lock_bh(p_ptr->lock);
- tipc_ref_discard(p_ptr->ref);
- spin_unlock_bh(p_ptr->lock);
-
- k_cancel_timer(&p_ptr->timer);
- if (p_ptr->connected) {
- buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
- tipc_nodesub_unsubscribe(&p_ptr->subscription);
- msg = buf_msg(buf);
- peer = msg_destnode(msg);
- tipc_link_xmit(buf, peer, msg_link_selector(msg));
- }
- spin_lock_bh(&tipc_port_list_lock);
- list_del(&p_ptr->port_list);
- list_del(&p_ptr->wait_list);
- spin_unlock_bh(&tipc_port_list_lock);
- k_term_timer(&p_ptr->timer);
-}
-
-/*
- * port_build_proto_msg(): create connection protocol message for port
- *
- * On entry the port must be locked and connected.
- */
-static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr,
- u32 type, u32 ack)
-{
- struct sk_buff *buf;
- struct tipc_msg *msg;
-
- buf = tipc_buf_acquire(INT_H_SIZE);
- if (buf) {
- msg = buf_msg(buf);
- tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE,
- tipc_port_peernode(p_ptr));
- msg_set_destport(msg, tipc_port_peerport(p_ptr));
- msg_set_origport(msg, p_ptr->ref);
- msg_set_msgcnt(msg, ack);
- buf->next = NULL;
- }
- return buf;
-}
-
-static void port_timeout(unsigned long ref)
-{
- struct tipc_port *p_ptr = tipc_port_lock(ref);
- struct sk_buff *buf = NULL;
- struct tipc_msg *msg = NULL;
-
- if (!p_ptr)
- return;
-
- if (!p_ptr->connected) {
- tipc_port_unlock(p_ptr);
- return;
- }
-
- /* Last probe answered ? */
- if (p_ptr->probing_state == TIPC_CONN_PROBING) {
- buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
- } else {
- buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0);
- p_ptr->probing_state = TIPC_CONN_PROBING;
- k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
- }
- tipc_port_unlock(p_ptr);
- msg = buf_msg(buf);
- tipc_link_xmit(buf, msg_destnode(msg), msg_link_selector(msg));
-}
-
-
-static void port_handle_node_down(unsigned long ref)
-{
- struct tipc_port *p_ptr = tipc_port_lock(ref);
- struct sk_buff *buf = NULL;
- struct tipc_msg *msg = NULL;
-
- if (!p_ptr)
- return;
- buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE);
- tipc_port_unlock(p_ptr);
- msg = buf_msg(buf);
- tipc_link_xmit(buf, msg_destnode(msg), msg_link_selector(msg));
-}
-
-
-static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err)
-{
- struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err);
-
- if (buf) {
- struct tipc_msg *msg = buf_msg(buf);
- msg_swap_words(msg, 4, 5);
- msg_swap_words(msg, 6, 7);
- buf->next = NULL;
- }
- return buf;
-}
-
-
-static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err)
-{
- struct sk_buff *buf;
- struct tipc_msg *msg;
- u32 imp;
-
- if (!p_ptr->connected)
- return NULL;
-
- buf = tipc_buf_acquire(BASIC_H_SIZE);
- if (buf) {
- msg = buf_msg(buf);
- memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE);
- msg_set_hdr_sz(msg, BASIC_H_SIZE);
- msg_set_size(msg, BASIC_H_SIZE);
- imp = msg_importance(msg);
- if (imp < TIPC_CRITICAL_IMPORTANCE)
- msg_set_importance(msg, ++imp);
- msg_set_errcode(msg, err);
- buf->next = NULL;
- }
- return buf;
-}
-
-static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id)
-{
- struct publication *publ;
- int ret;
-
- if (full_id)
- ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:",
- tipc_zone(tipc_own_addr),
- tipc_cluster(tipc_own_addr),
- tipc_node(tipc_own_addr), p_ptr->ref);
- else
- ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref);
-
- if (p_ptr->connected) {
- u32 dport = tipc_port_peerport(p_ptr);
- u32 destnode = tipc_port_peernode(p_ptr);
-
- ret += tipc_snprintf(buf + ret, len - ret,
- " connected to <%u.%u.%u:%u>",
- tipc_zone(destnode),
- tipc_cluster(destnode),
- tipc_node(destnode), dport);
- if (p_ptr->conn_type != 0)
- ret += tipc_snprintf(buf + ret, len - ret,
- " via {%u,%u}", p_ptr->conn_type,
- p_ptr->conn_instance);
- } else if (p_ptr->published) {
- ret += tipc_snprintf(buf + ret, len - ret, " bound to");
- list_for_each_entry(publ, &p_ptr->publications, pport_list) {
- if (publ->lower == publ->upper)
- ret += tipc_snprintf(buf + ret, len - ret,
- " {%u,%u}", publ->type,
- publ->lower);
- else
- ret += tipc_snprintf(buf + ret, len - ret,
- " {%u,%u,%u}", publ->type,
- publ->lower, publ->upper);
- }
- }
- ret += tipc_snprintf(buf + ret, len - ret, "\n");
- return ret;
-}
-
-struct sk_buff *tipc_port_get_ports(void)
-{
- struct sk_buff *buf;
- struct tlv_desc *rep_tlv;
- char *pb;
- int pb_len;
- struct tipc_port *p_ptr;
- int str_len = 0;
-
- buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN));
- if (!buf)
- return NULL;
- rep_tlv = (struct tlv_desc *)buf->data;
- pb = TLV_DATA(rep_tlv);
- pb_len = ULTRA_STRING_MAX_LEN;
-
- spin_lock_bh(&tipc_port_list_lock);
- list_for_each_entry(p_ptr, &ports, port_list) {
- spin_lock_bh(p_ptr->lock);
- str_len += port_print(p_ptr, pb, pb_len, 0);
- spin_unlock_bh(p_ptr->lock);
- }
- spin_unlock_bh(&tipc_port_list_lock);
- str_len += 1; /* for "\0" */
- skb_put(buf, TLV_SPACE(str_len));
- TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
-
- return buf;
-}
-
-void tipc_port_reinit(void)
-{
- struct tipc_port *p_ptr;
- struct tipc_msg *msg;
-
- spin_lock_bh(&tipc_port_list_lock);
- list_for_each_entry(p_ptr, &ports, port_list) {
- msg = &p_ptr->phdr;
- msg_set_prevnode(msg, tipc_own_addr);
- msg_set_orignode(msg, tipc_own_addr);
- }
- spin_unlock_bh(&tipc_port_list_lock);
-}
-
-void tipc_acknowledge(u32 ref, u32 ack)
-{
- struct tipc_port *p_ptr;
- struct sk_buff *buf = NULL;
- struct tipc_msg *msg;
-
- p_ptr = tipc_port_lock(ref);
- if (!p_ptr)
- return;
- if (p_ptr->connected)
- buf = port_build_proto_msg(p_ptr, CONN_ACK, ack);
-
- tipc_port_unlock(p_ptr);
- if (!buf)
- return;
- msg = buf_msg(buf);
- tipc_link_xmit(buf, msg_destnode(msg), msg_link_selector(msg));
-}
-
-int tipc_publish(struct tipc_port *p_ptr, unsigned int scope,
- struct tipc_name_seq const *seq)
-{
- struct publication *publ;
- u32 key;
-
- if (p_ptr->connected)
- return -EINVAL;
- key = p_ptr->ref + p_ptr->pub_count + 1;
- if (key == p_ptr->ref)
- return -EADDRINUSE;
-
- publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper,
- scope, p_ptr->ref, key);
- if (publ) {
- list_add(&publ->pport_list, &p_ptr->publications);
- p_ptr->pub_count++;
- p_ptr->published = 1;
- return 0;
- }
- return -EINVAL;
-}
-
-int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope,
- struct tipc_name_seq const *seq)
-{
- struct publication *publ;
- struct publication *tpubl;
- int res = -EINVAL;
-
- if (!seq) {
- list_for_each_entry_safe(publ, tpubl,
- &p_ptr->publications, pport_list) {
- tipc_nametbl_withdraw(publ->type, publ->lower,
- publ->ref, publ->key);
- }
- res = 0;
- } else {
- list_for_each_entry_safe(publ, tpubl,
- &p_ptr->publications, pport_list) {
- if (publ->scope != scope)
- continue;
- if (publ->type != seq->type)
- continue;
- if (publ->lower != seq->lower)
- continue;
- if (publ->upper != seq->upper)
- break;
- tipc_nametbl_withdraw(publ->type, publ->lower,
- publ->ref, publ->key);
- res = 0;
- break;
- }
- }
- if (list_empty(&p_ptr->publications))
- p_ptr->published = 0;
- return res;
-}
-
-int tipc_port_connect(u32 ref, struct tipc_portid const *peer)
-{
- struct tipc_port *p_ptr;
- int res;
-
- p_ptr = tipc_port_lock(ref);
- if (!p_ptr)
- return -EINVAL;
- res = __tipc_port_connect(ref, p_ptr, peer);
- tipc_port_unlock(p_ptr);
- return res;
-}
-
-/*
- * __tipc_port_connect - connect to a remote peer
- *
- * Port must be locked.
- */
-int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr,
- struct tipc_portid const *peer)
-{
- struct tipc_msg *msg;
- int res = -EINVAL;
-
- if (p_ptr->published || p_ptr->connected)
- goto exit;
- if (!peer->ref)
- goto exit;
-
- msg = &p_ptr->phdr;
- msg_set_destnode(msg, peer->node);
- msg_set_destport(msg, peer->ref);
- msg_set_type(msg, TIPC_CONN_MSG);
- msg_set_lookup_scope(msg, 0);
- msg_set_hdr_sz(msg, SHORT_H_SIZE);
-
- p_ptr->probing_interval = PROBING_INTERVAL;
- p_ptr->probing_state = TIPC_CONN_OK;
- p_ptr->connected = 1;
- k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
-
- tipc_nodesub_subscribe(&p_ptr->subscription, peer->node,
- (void *)(unsigned long)ref,
- (net_ev_handler)port_handle_node_down);
- res = 0;
-exit:
- p_ptr->max_pkt = tipc_node_get_mtu(peer->node, ref);
- return res;
-}
-
-/*
- * __tipc_disconnect - disconnect port from peer
- *
- * Port must be locked.
- */
-int __tipc_port_disconnect(struct tipc_port *tp_ptr)
-{
- if (tp_ptr->connected) {
- tp_ptr->connected = 0;
- /* let timer expire on it's own to avoid deadlock! */
- tipc_nodesub_unsubscribe(&tp_ptr->subscription);
- return 0;
- }
-
- return -ENOTCONN;
-}
-
-/*
- * tipc_port_disconnect(): Disconnect port form peer.
- * This is a node local operation.
- */
-int tipc_port_disconnect(u32 ref)
-{
- struct tipc_port *p_ptr;
- int res;
-
- p_ptr = tipc_port_lock(ref);
- if (!p_ptr)
- return -EINVAL;
- res = __tipc_port_disconnect(p_ptr);
- tipc_port_unlock(p_ptr);
- return res;
-}
-
-/*
- * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect
- */
-int tipc_port_shutdown(u32 ref)
-{
- struct tipc_msg *msg;
- struct tipc_port *p_ptr;
- struct sk_buff *buf = NULL;
-
- p_ptr = tipc_port_lock(ref);
- if (!p_ptr)
- return -EINVAL;
-
- buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN);
- tipc_port_unlock(p_ptr);
- msg = buf_msg(buf);
- tipc_link_xmit(buf, msg_destnode(msg), msg_link_selector(msg));
- return tipc_port_disconnect(ref);
-}
diff --git a/net/tipc/port.h b/net/tipc/port.h
deleted file mode 100644
index 3087da39ee4..00000000000
--- a/net/tipc/port.h
+++ /dev/null
@@ -1,190 +0,0 @@
-/*
- * net/tipc/port.h: Include file for TIPC port code
- *
- * Copyright (c) 1994-2007, 2014, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _TIPC_PORT_H
-#define _TIPC_PORT_H
-
-#include "ref.h"
-#include "net.h"
-#include "msg.h"
-#include "node_subscr.h"
-
-#define TIPC_CONNACK_INTV 256
-#define TIPC_FLOWCTRL_WIN (TIPC_CONNACK_INTV * 2)
-#define TIPC_CONN_OVERLOAD_LIMIT ((TIPC_FLOWCTRL_WIN * 2 + 1) * \
- SKB_TRUESIZE(TIPC_MAX_USER_MSG_SIZE))
-
-/**
- * struct tipc_port - TIPC port structure
- * @lock: pointer to spinlock for controlling access to port
- * @connected: non-zero if port is currently connected to a peer port
- * @conn_type: TIPC type used when connection was established
- * @conn_instance: TIPC instance used when connection was established
- * @published: non-zero if port has one or more associated names
- * @max_pkt: maximum packet size "hint" used when building messages sent by port
- * @ref: unique reference to port in TIPC object registry
- * @phdr: preformatted message header used when sending messages
- * @port_list: adjacent ports in TIPC's global list of ports
- * @wait_list: adjacent ports in list of ports waiting on link congestion
- * @waiting_pkts:
- * @publications: list of publications for port
- * @pub_count: total # of publications port has made during its lifetime
- * @probing_state:
- * @probing_interval:
- * @timer_ref:
- * @subscription: "node down" subscription used to terminate failed connections
- */
-struct tipc_port {
- spinlock_t *lock;
- int connected;
- u32 conn_type;
- u32 conn_instance;
- int published;
- u32 max_pkt;
- u32 ref;
- struct tipc_msg phdr;
- struct list_head port_list;
- struct list_head wait_list;
- u32 waiting_pkts;
- struct list_head publications;
- u32 pub_count;
- u32 probing_state;
- u32 probing_interval;
- struct timer_list timer;
- struct tipc_node_subscr subscription;
-};
-
-extern spinlock_t tipc_port_list_lock;
-struct tipc_port_list;
-
-/*
- * TIPC port manipulation routines
- */
-u32 tipc_port_init(struct tipc_port *p_ptr,
- const unsigned int importance);
-
-void tipc_acknowledge(u32 port_ref, u32 ack);
-
-void tipc_port_destroy(struct tipc_port *p_ptr);
-
-int tipc_publish(struct tipc_port *p_ptr, unsigned int scope,
- struct tipc_name_seq const *name_seq);
-
-int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope,
- struct tipc_name_seq const *name_seq);
-
-int tipc_port_connect(u32 portref, struct tipc_portid const *port);
-
-int tipc_port_disconnect(u32 portref);
-
-int tipc_port_shutdown(u32 ref);
-
-/*
- * The following routines require that the port be locked on entry
- */
-int __tipc_port_disconnect(struct tipc_port *tp_ptr);
-int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr,
- struct tipc_portid const *peer);
-int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg);
-
-struct sk_buff *tipc_port_get_ports(void);
-void tipc_port_reinit(void);
-
-/**
- * tipc_port_lock - lock port instance referred to and return its pointer
- */
-static inline struct tipc_port *tipc_port_lock(u32 ref)
-{
- return (struct tipc_port *)tipc_ref_lock(ref);
-}
-
-/**
- * tipc_port_unlock - unlock a port instance
- *
- * Can use pointer instead of tipc_ref_unlock() since port is already locked.
- */
-static inline void tipc_port_unlock(struct tipc_port *p_ptr)
-{
- spin_unlock_bh(p_ptr->lock);
-}
-
-static inline u32 tipc_port_peernode(struct tipc_port *p_ptr)
-{
- return msg_destnode(&p_ptr->phdr);
-}
-
-static inline u32 tipc_port_peerport(struct tipc_port *p_ptr)
-{
- return msg_destport(&p_ptr->phdr);
-}
-
-static inline bool tipc_port_unreliable(struct tipc_port *port)
-{
- return msg_src_droppable(&port->phdr) != 0;
-}
-
-static inline void tipc_port_set_unreliable(struct tipc_port *port,
- bool unreliable)
-{
- msg_set_src_droppable(&port->phdr, unreliable ? 1 : 0);
-}
-
-static inline bool tipc_port_unreturnable(struct tipc_port *port)
-{
- return msg_dest_droppable(&port->phdr) != 0;
-}
-
-static inline void tipc_port_set_unreturnable(struct tipc_port *port,
- bool unreturnable)
-{
- msg_set_dest_droppable(&port->phdr, unreturnable ? 1 : 0);
-}
-
-
-static inline int tipc_port_importance(struct tipc_port *port)
-{
- return msg_importance(&port->phdr);
-}
-
-static inline int tipc_port_set_importance(struct tipc_port *port, int imp)
-{
- if (imp > TIPC_CRITICAL_IMPORTANCE)
- return -EINVAL;
- msg_set_importance(&port->phdr, (u32)imp);
- return 0;
-}
-
-#endif
diff --git a/net/tipc/ref.c b/net/tipc/ref.c
deleted file mode 100644
index 3d4ecd754ee..00000000000
--- a/net/tipc/ref.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * net/tipc/ref.c: TIPC object registry code
- *
- * Copyright (c) 1991-2006, Ericsson AB
- * Copyright (c) 2004-2007, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "core.h"
-#include "ref.h"
-
-/**
- * struct reference - TIPC object reference entry
- * @object: pointer to object associated with reference entry
- * @lock: spinlock controlling access to object
- * @ref: reference value for object (combines instance & array index info)
- */
-struct reference {
- void *object;
- spinlock_t lock;
- u32 ref;
-};
-
-/**
- * struct tipc_ref_table - table of TIPC object reference entries
- * @entries: pointer to array of reference entries
- * @capacity: array index of first unusable entry
- * @init_point: array index of first uninitialized entry
- * @first_free: array index of first unused object reference entry
- * @last_free: array index of last unused object reference entry
- * @index_mask: bitmask for array index portion of reference values
- * @start_mask: initial value for instance value portion of reference values
- */
-struct ref_table {
- struct reference *entries;
- u32 capacity;
- u32 init_point;
- u32 first_free;
- u32 last_free;
- u32 index_mask;
- u32 start_mask;
-};
-
-/*
- * Object reference table consists of 2**N entries.
- *
- * State Object ptr Reference
- * ----- ---------- ---------
- * In use non-NULL XXXX|own index
- * (XXXX changes each time entry is acquired)
- * Free NULL YYYY|next free index
- * (YYYY is one more than last used XXXX)
- * Uninitialized NULL 0
- *
- * Entry 0 is not used; this allows index 0 to denote the end of the free list.
- *
- * Note that a reference value of 0 does not necessarily indicate that an
- * entry is uninitialized, since the last entry in the free list could also
- * have a reference value of 0 (although this is unlikely).
- */
-
-static struct ref_table tipc_ref_table;
-
-static DEFINE_SPINLOCK(ref_table_lock);
-
-/**
- * tipc_ref_table_init - create reference table for objects
- */
-int tipc_ref_table_init(u32 requested_size, u32 start)
-{
- struct reference *table;
- u32 actual_size;
-
- /* account for unused entry, then round up size to a power of 2 */
-
- requested_size++;
- for (actual_size = 16; actual_size < requested_size; actual_size <<= 1)
- /* do nothing */ ;
-
- /* allocate table & mark all entries as uninitialized */
- table = vzalloc(actual_size * sizeof(struct reference));
- if (table == NULL)
- return -ENOMEM;
-
- tipc_ref_table.entries = table;
- tipc_ref_table.capacity = requested_size;
- tipc_ref_table.init_point = 1;
- tipc_ref_table.first_free = 0;
- tipc_ref_table.last_free = 0;
- tipc_ref_table.index_mask = actual_size - 1;
- tipc_ref_table.start_mask = start & ~tipc_ref_table.index_mask;
-
- return 0;
-}
-
-/**
- * tipc_ref_table_stop - destroy reference table for objects
- */
-void tipc_ref_table_stop(void)
-{
- vfree(tipc_ref_table.entries);
- tipc_ref_table.entries = NULL;
-}
-
-/**
- * tipc_ref_acquire - create reference to an object
- *
- * Register an object pointer in reference table and lock the object.
- * Returns a unique reference value that is used from then on to retrieve the
- * object pointer, or to determine that the object has been deregistered.
- *
- * Note: The object is returned in the locked state so that the caller can
- * register a partially initialized object, without running the risk that
- * the object will be accessed before initialization is complete.
- */
-u32 tipc_ref_acquire(void *object, spinlock_t **lock)
-{
- u32 index;
- u32 index_mask;
- u32 next_plus_upper;
- u32 ref;
- struct reference *entry = NULL;
-
- if (!object) {
- pr_err("Attempt to acquire ref. to non-existent obj\n");
- return 0;
- }
- if (!tipc_ref_table.entries) {
- pr_err("Ref. table not found in acquisition attempt\n");
- return 0;
- }
-
- /* take a free entry, if available; otherwise initialize a new entry */
- spin_lock_bh(&ref_table_lock);
- if (tipc_ref_table.first_free) {
- index = tipc_ref_table.first_free;
- entry = &(tipc_ref_table.entries[index]);
- index_mask = tipc_ref_table.index_mask;
- next_plus_upper = entry->ref;
- tipc_ref_table.first_free = next_plus_upper & index_mask;
- ref = (next_plus_upper & ~index_mask) + index;
- } else if (tipc_ref_table.init_point < tipc_ref_table.capacity) {
- index = tipc_ref_table.init_point++;
- entry = &(tipc_ref_table.entries[index]);
- spin_lock_init(&entry->lock);
- ref = tipc_ref_table.start_mask + index;
- } else {
- ref = 0;
- }
- spin_unlock_bh(&ref_table_lock);
-
- /*
- * Grab the lock so no one else can modify this entry
- * While we assign its ref value & object pointer
- */
- if (entry) {
- spin_lock_bh(&entry->lock);
- entry->ref = ref;
- entry->object = object;
- *lock = &entry->lock;
- /*
- * keep it locked, the caller is responsible
- * for unlocking this when they're done with it
- */
- }
-
- return ref;
-}
-
-/**
- * tipc_ref_discard - invalidate references to an object
- *
- * Disallow future references to an object and free up the entry for re-use.
- * Note: The entry's spin_lock may still be busy after discard
- */
-void tipc_ref_discard(u32 ref)
-{
- struct reference *entry;
- u32 index;
- u32 index_mask;
-
- if (!tipc_ref_table.entries) {
- pr_err("Ref. table not found during discard attempt\n");
- return;
- }
-
- index_mask = tipc_ref_table.index_mask;
- index = ref & index_mask;
- entry = &(tipc_ref_table.entries[index]);
-
- spin_lock_bh(&ref_table_lock);
-
- if (!entry->object) {
- pr_err("Attempt to discard ref. to non-existent obj\n");
- goto exit;
- }
- if (entry->ref != ref) {
- pr_err("Attempt to discard non-existent reference\n");
- goto exit;
- }
-
- /*
- * mark entry as unused; increment instance part of entry's reference
- * to invalidate any subsequent references
- */
- entry->object = NULL;
- entry->ref = (ref & ~index_mask) + (index_mask + 1);
-
- /* append entry to free entry list */
- if (tipc_ref_table.first_free == 0)
- tipc_ref_table.first_free = index;
- else
- tipc_ref_table.entries[tipc_ref_table.last_free].ref |= index;
- tipc_ref_table.last_free = index;
-
-exit:
- spin_unlock_bh(&ref_table_lock);
-}
-
-/**
- * tipc_ref_lock - lock referenced object and return pointer to it
- */
-void *tipc_ref_lock(u32 ref)
-{
- if (likely(tipc_ref_table.entries)) {
- struct reference *entry;
-
- entry = &tipc_ref_table.entries[ref &
- tipc_ref_table.index_mask];
- if (likely(entry->ref != 0)) {
- spin_lock_bh(&entry->lock);
- if (likely((entry->ref == ref) && (entry->object)))
- return entry->object;
- spin_unlock_bh(&entry->lock);
- }
- }
- return NULL;
-}
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index ff8c8118d56..4731cad99d1 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -35,17 +35,67 @@
*/
#include "core.h"
-#include "port.h"
#include "name_table.h"
#include "node.h"
#include "link.h"
#include <linux/export.h>
+#include "config.h"
+#include "socket.h"
#define SS_LISTENING -1 /* socket is listening */
#define SS_READY -2 /* socket is connectionless */
-#define CONN_TIMEOUT_DEFAULT 8000 /* default connect timeout = 8s */
-#define TIPC_FWD_MSG 1
+#define CONN_TIMEOUT_DEFAULT 8000 /* default connect timeout = 8s */
+#define CONN_PROBING_INTERVAL 3600000 /* [ms] => 1 h */
+#define TIPC_FWD_MSG 1
+#define TIPC_CONN_OK 0
+#define TIPC_CONN_PROBING 1
+
+/**
+ * struct tipc_sock - TIPC socket structure
+ * @sk: socket - interacts with 'port' and with user via the socket API
+ * @connected: non-zero if port is currently connected to a peer port
+ * @conn_type: TIPC type used when connection was established
+ * @conn_instance: TIPC instance used when connection was established
+ * @published: non-zero if port has one or more associated names
+ * @max_pkt: maximum packet size "hint" used when building messages sent by port
+ * @ref: unique reference to port in TIPC object registry
+ * @phdr: preformatted message header used when sending messages
+ * @port_list: adjacent ports in TIPC's global list of ports
+ * @publications: list of publications for port
+ * @pub_count: total # of publications port has made during its lifetime
+ * @probing_state:
+ * @probing_interval:
+ * @timer:
+ * @port: port - interacts with 'sk' and with the rest of the TIPC stack
+ * @peer_name: the peer of the connection, if any
+ * @conn_timeout: the time we can wait for an unresponded setup request
+ * @dupl_rcvcnt: number of bytes counted twice, in both backlog and rcv queue
+ * @link_cong: non-zero if owner must sleep because of link congestion
+ * @sent_unacked: # messages sent by socket, and not yet acked by peer
+ * @rcv_unacked: # messages read by user, but not yet acked back to peer
+ */
+struct tipc_sock {
+ struct sock sk;
+ int connected;
+ u32 conn_type;
+ u32 conn_instance;
+ int published;
+ u32 max_pkt;
+ u32 ref;
+ struct tipc_msg phdr;
+ struct list_head sock_list;
+ struct list_head publications;
+ u32 pub_count;
+ u32 probing_state;
+ u32 probing_interval;
+ struct timer_list timer;
+ uint conn_timeout;
+ atomic_t dupl_rcvcnt;
+ bool link_cong;
+ uint sent_unacked;
+ uint rcv_unacked;
+};
static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb);
static void tipc_data_ready(struct sock *sk);
@@ -53,6 +103,16 @@ static void tipc_write_space(struct sock *sk);
static int tipc_release(struct socket *sock);
static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags);
static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p);
+static void tipc_sk_timeout(unsigned long ref);
+static int tipc_sk_publish(struct tipc_sock *tsk, uint scope,
+ struct tipc_name_seq const *seq);
+static int tipc_sk_withdraw(struct tipc_sock *tsk, uint scope,
+ struct tipc_name_seq const *seq);
+static u32 tipc_sk_ref_acquire(struct tipc_sock *tsk);
+static void tipc_sk_ref_discard(u32 ref);
+static struct tipc_sock *tipc_sk_get(u32 ref);
+static struct tipc_sock *tipc_sk_get_next(u32 *ref);
+static void tipc_sk_put(struct tipc_sock *tsk);
static const struct proto_ops packet_ops;
static const struct proto_ops stream_ops;
@@ -61,6 +121,14 @@ static const struct proto_ops msg_ops;
static struct proto tipc_proto;
static struct proto tipc_proto_kern;
+static const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {
+ [TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC },
+ [TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 },
+ [TIPC_NLA_SOCK_REF] = { .type = NLA_U32 },
+ [TIPC_NLA_SOCK_CON] = { .type = NLA_NESTED },
+ [TIPC_NLA_SOCK_HAS_PUBL] = { .type = NLA_FLAG }
+};
+
/*
* Revised TIPC socket locking policy:
*
@@ -106,34 +174,117 @@ static struct proto tipc_proto_kern;
* - port reference
*/
-#include "socket.h"
+static u32 tsk_peer_node(struct tipc_sock *tsk)
+{
+ return msg_destnode(&tsk->phdr);
+}
+
+static u32 tsk_peer_port(struct tipc_sock *tsk)
+{
+ return msg_destport(&tsk->phdr);
+}
+
+static bool tsk_unreliable(struct tipc_sock *tsk)
+{
+ return msg_src_droppable(&tsk->phdr) != 0;
+}
+
+static void tsk_set_unreliable(struct tipc_sock *tsk, bool unreliable)
+{
+ msg_set_src_droppable(&tsk->phdr, unreliable ? 1 : 0);
+}
+
+static bool tsk_unreturnable(struct tipc_sock *tsk)
+{
+ return msg_dest_droppable(&tsk->phdr) != 0;
+}
+
+static void tsk_set_unreturnable(struct tipc_sock *tsk, bool unreturnable)
+{
+ msg_set_dest_droppable(&tsk->phdr, unreturnable ? 1 : 0);
+}
+
+static int tsk_importance(struct tipc_sock *tsk)
+{
+ return msg_importance(&tsk->phdr);
+}
+
+static int tsk_set_importance(struct tipc_sock *tsk, int imp)
+{
+ if (imp > TIPC_CRITICAL_IMPORTANCE)
+ return -EINVAL;
+ msg_set_importance(&tsk->phdr, (u32)imp);
+ return 0;
+}
+
+static struct tipc_sock *tipc_sk(const struct sock *sk)
+{
+ return container_of(sk, struct tipc_sock, sk);
+}
+
+static int tsk_conn_cong(struct tipc_sock *tsk)
+{
+ return tsk->sent_unacked >= TIPC_FLOWCTRL_WIN;
+}
/**
- * advance_rx_queue - discard first buffer in socket receive queue
+ * tsk_advance_rx_queue - discard first buffer in socket receive queue
*
* Caller must hold socket lock
*/
-static void advance_rx_queue(struct sock *sk)
+static void tsk_advance_rx_queue(struct sock *sk)
{
kfree_skb(__skb_dequeue(&sk->sk_receive_queue));
}
/**
- * reject_rx_queue - reject all buffers in socket receive queue
+ * tsk_rej_rx_queue - reject all buffers in socket receive queue
*
* Caller must hold socket lock
*/
-static void reject_rx_queue(struct sock *sk)
+static void tsk_rej_rx_queue(struct sock *sk)
{
- struct sk_buff *buf;
+ struct sk_buff *skb;
u32 dnode;
- while ((buf = __skb_dequeue(&sk->sk_receive_queue))) {
- if (tipc_msg_reverse(buf, &dnode, TIPC_ERR_NO_PORT))
- tipc_link_xmit(buf, dnode, 0);
+ while ((skb = __skb_dequeue(&sk->sk_receive_queue))) {
+ if (tipc_msg_reverse(skb, &dnode, TIPC_ERR_NO_PORT))
+ tipc_link_xmit_skb(skb, dnode, 0);
}
}
+/* tsk_peer_msg - verify if message was sent by connected port's peer
+ *
+ * Handles cases where the node's network address has changed from
+ * the default of <0.0.0> to its configured setting.
+ */
+static bool tsk_peer_msg(struct tipc_sock *tsk, struct tipc_msg *msg)
+{
+ u32 peer_port = tsk_peer_port(tsk);
+ u32 orig_node;
+ u32 peer_node;
+
+ if (unlikely(!tsk->connected))
+ return false;
+
+ if (unlikely(msg_origport(msg) != peer_port))
+ return false;
+
+ orig_node = msg_orignode(msg);
+ peer_node = tsk_peer_node(tsk);
+
+ if (likely(orig_node == peer_node))
+ return true;
+
+ if (!orig_node && (peer_node == tipc_own_addr))
+ return true;
+
+ if (!peer_node && (orig_node == tipc_own_addr))
+ return true;
+
+ return false;
+}
+
/**
* tipc_sk_create - create a TIPC socket
* @net: network namespace (must be default network)
@@ -153,7 +304,7 @@ static int tipc_sk_create(struct net *net, struct socket *sock,
socket_state state;
struct sock *sk;
struct tipc_sock *tsk;
- struct tipc_port *port;
+ struct tipc_msg *msg;
u32 ref;
/* Validate arguments */
@@ -188,20 +339,24 @@ static int tipc_sk_create(struct net *net, struct socket *sock,
return -ENOMEM;
tsk = tipc_sk(sk);
- port = &tsk->port;
-
- ref = tipc_port_init(port, TIPC_LOW_IMPORTANCE);
+ ref = tipc_sk_ref_acquire(tsk);
if (!ref) {
- pr_warn("Socket registration failed, ref. table exhausted\n");
- sk_free(sk);
+ pr_warn("Socket create failed; reference table exhausted\n");
return -ENOMEM;
}
+ tsk->max_pkt = MAX_PKT_DEFAULT;
+ tsk->ref = ref;
+ INIT_LIST_HEAD(&tsk->publications);
+ msg = &tsk->phdr;
+ tipc_msg_init(msg, TIPC_LOW_IMPORTANCE, TIPC_NAMED_MSG,
+ NAMED_H_SIZE, 0);
+ msg_set_origport(msg, ref);
/* Finish initializing socket data structures */
sock->ops = ops;
sock->state = state;
-
sock_init_data(sock, sk);
+ k_init_timer(&tsk->timer, (Handler)tipc_sk_timeout, ref);
sk->sk_backlog_rcv = tipc_backlog_rcv;
sk->sk_rcvbuf = sysctl_tipc_rmem[1];
sk->sk_data_ready = tipc_data_ready;
@@ -209,12 +364,11 @@ static int tipc_sk_create(struct net *net, struct socket *sock,
tsk->conn_timeout = CONN_TIMEOUT_DEFAULT;
tsk->sent_unacked = 0;
atomic_set(&tsk->dupl_rcvcnt, 0);
- tipc_port_unlock(port);
if (sock->state == SS_READY) {
- tipc_port_set_unreturnable(port, true);
+ tsk_set_unreturnable(tsk, true);
if (sock->type == SOCK_DGRAM)
- tipc_port_set_unreliable(port, true);
+ tsk_set_unreliable(tsk, true);
}
return 0;
}
@@ -308,8 +462,7 @@ static int tipc_release(struct socket *sock)
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk;
- struct tipc_port *port;
- struct sk_buff *buf;
+ struct sk_buff *skb;
u32 dnode;
/*
@@ -320,34 +473,44 @@ static int tipc_release(struct socket *sock)
return 0;
tsk = tipc_sk(sk);
- port = &tsk->port;
lock_sock(sk);
/*
* Reject all unreceived messages, except on an active connection
* (which disconnects locally & sends a 'FIN+' to peer)
*/
+ dnode = tsk_peer_node(tsk);
while (sock->state != SS_DISCONNECTING) {
- buf = __skb_dequeue(&sk->sk_receive_queue);
- if (buf == NULL)
+ skb = __skb_dequeue(&sk->sk_receive_queue);
+ if (skb == NULL)
break;
- if (TIPC_SKB_CB(buf)->handle != NULL)
- kfree_skb(buf);
+ if (TIPC_SKB_CB(skb)->handle != NULL)
+ kfree_skb(skb);
else {
if ((sock->state == SS_CONNECTING) ||
(sock->state == SS_CONNECTED)) {
sock->state = SS_DISCONNECTING;
- tipc_port_disconnect(port->ref);
+ tsk->connected = 0;
+ tipc_node_remove_conn(dnode, tsk->ref);
}
- if (tipc_msg_reverse(buf, &dnode, TIPC_ERR_NO_PORT))
- tipc_link_xmit(buf, dnode, 0);
+ if (tipc_msg_reverse(skb, &dnode, TIPC_ERR_NO_PORT))
+ tipc_link_xmit_skb(skb, dnode, 0);
}
}
- /* Destroy TIPC port; also disconnects an active connection and
- * sends a 'FIN-' to peer.
- */
- tipc_port_destroy(port);
+ tipc_sk_withdraw(tsk, 0, NULL);
+ tipc_sk_ref_discard(tsk->ref);
+ k_cancel_timer(&tsk->timer);
+ if (tsk->connected) {
+ skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
+ SHORT_H_SIZE, 0, dnode, tipc_own_addr,
+ tsk_peer_port(tsk),
+ tsk->ref, TIPC_ERR_NO_PORT);
+ if (skb)
+ tipc_link_xmit_skb(skb, dnode, tsk->ref);
+ tipc_node_remove_conn(dnode, tsk->ref);
+ }
+ k_term_timer(&tsk->timer);
/* Discard any remaining (connection-based) messages in receive queue */
__skb_queue_purge(&sk->sk_receive_queue);
@@ -355,7 +518,6 @@ static int tipc_release(struct socket *sock)
/* Reject any messages that accumulated in backlog queue */
sock->state = SS_DISCONNECTING;
release_sock(sk);
-
sock_put(sk);
sock->sk = NULL;
@@ -387,7 +549,7 @@ static int tipc_bind(struct socket *sock, struct sockaddr *uaddr,
lock_sock(sk);
if (unlikely(!uaddr_len)) {
- res = tipc_withdraw(&tsk->port, 0, NULL);
+ res = tipc_sk_withdraw(tsk, 0, NULL);
goto exit;
}
@@ -415,8 +577,8 @@ static int tipc_bind(struct socket *sock, struct sockaddr *uaddr,
}
res = (addr->scope > 0) ?
- tipc_publish(&tsk->port, addr->scope, &addr->addr.nameseq) :
- tipc_withdraw(&tsk->port, -addr->scope, &addr->addr.nameseq);
+ tipc_sk_publish(tsk, addr->scope, &addr->addr.nameseq) :
+ tipc_sk_withdraw(tsk, -addr->scope, &addr->addr.nameseq);
exit:
release_sock(sk);
return res;
@@ -446,10 +608,10 @@ static int tipc_getname(struct socket *sock, struct sockaddr *uaddr,
if ((sock->state != SS_CONNECTED) &&
((peer != 2) || (sock->state != SS_DISCONNECTING)))
return -ENOTCONN;
- addr->addr.id.ref = tipc_port_peerport(&tsk->port);
- addr->addr.id.node = tipc_port_peernode(&tsk->port);
+ addr->addr.id.ref = tsk_peer_port(tsk);
+ addr->addr.id.node = tsk_peer_node(tsk);
} else {
- addr->addr.id.ref = tsk->port.ref;
+ addr->addr.id.ref = tsk->ref;
addr->addr.id.node = tipc_own_addr;
}
@@ -518,7 +680,7 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
break;
case SS_READY:
case SS_CONNECTED:
- if (!tsk->link_cong && !tipc_sk_conn_cong(tsk))
+ if (!tsk->link_cong && !tsk_conn_cong(tsk))
mask |= POLLOUT;
/* fall thru' */
case SS_CONNECTING:
@@ -538,7 +700,7 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
* tipc_sendmcast - send multicast message
* @sock: socket structure
* @seq: destination address
- * @iov: message data to send
+ * @msg: message to send
* @dsz: total length of message data
* @timeo: timeout to wait for wakeup
*
@@ -546,11 +708,11 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
* Returns the number of bytes sent on success, or errno
*/
static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
- struct iovec *iov, size_t dsz, long timeo)
+ struct msghdr *msg, size_t dsz, long timeo)
{
struct sock *sk = sock->sk;
- struct tipc_msg *mhdr = &tipc_sk(sk)->port.phdr;
- struct sk_buff *buf;
+ struct tipc_msg *mhdr = &tipc_sk(sk)->phdr;
+ struct sk_buff_head head;
uint mtu;
int rc;
@@ -565,12 +727,13 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
new_mtu:
mtu = tipc_bclink_get_mtu();
- rc = tipc_msg_build(mhdr, iov, 0, dsz, mtu, &buf);
+ __skb_queue_head_init(&head);
+ rc = tipc_msg_build(mhdr, msg, 0, dsz, mtu, &head);
if (unlikely(rc < 0))
return rc;
do {
- rc = tipc_bclink_xmit(buf);
+ rc = tipc_bclink_xmit(&head);
if (likely(rc >= 0)) {
rc = dsz;
break;
@@ -579,9 +742,10 @@ new_mtu:
goto new_mtu;
if (rc != -ELINKCONG)
break;
+ tipc_sk(sk)->link_cong = 1;
rc = tipc_wait_for_sndmsg(sock, &timeo);
if (rc)
- kfree_skb_list(buf);
+ __skb_queue_purge(&head);
} while (!rc);
return rc;
}
@@ -638,20 +802,19 @@ static int tipc_sk_proto_rcv(struct tipc_sock *tsk, u32 *dnode,
struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
- struct tipc_port *port = &tsk->port;
int conn_cong;
/* Ignore if connection cannot be validated: */
- if (!port->connected || !tipc_port_peer_msg(port, msg))
+ if (!tsk_peer_msg(tsk, msg))
goto exit;
- port->probing_state = TIPC_CONN_OK;
+ tsk->probing_state = TIPC_CONN_OK;
if (msg_type(msg) == CONN_ACK) {
- conn_cong = tipc_sk_conn_cong(tsk);
+ conn_cong = tsk_conn_cong(tsk);
tsk->sent_unacked -= msg_msgcnt(msg);
if (conn_cong)
- tipc_sock_wakeup(tsk);
+ tsk->sk.sk_write_space(&tsk->sk);
} else if (msg_type(msg) == CONN_PROBE) {
if (!tipc_msg_reverse(buf, dnode, TIPC_OK))
return TIPC_OK;
@@ -664,39 +827,6 @@ exit:
return TIPC_OK;
}
-/**
- * dest_name_check - verify user is permitted to send to specified port name
- * @dest: destination address
- * @m: descriptor for message to be sent
- *
- * Prevents restricted configuration commands from being issued by
- * unauthorized users.
- *
- * Returns 0 if permission is granted, otherwise errno
- */
-static int dest_name_check(struct sockaddr_tipc *dest, struct msghdr *m)
-{
- struct tipc_cfg_msg_hdr hdr;
-
- if (unlikely(dest->addrtype == TIPC_ADDR_ID))
- return 0;
- if (likely(dest->addr.name.name.type >= TIPC_RESERVED_TYPES))
- return 0;
- if (likely(dest->addr.name.name.type == TIPC_TOP_SRV))
- return 0;
- if (likely(dest->addr.name.name.type != TIPC_CFG_SRV))
- return -EACCES;
-
- if (!m->msg_iovlen || (m->msg_iov[0].iov_len < sizeof(hdr)))
- return -EMSGSIZE;
- if (copy_from_user(&hdr, m->msg_iov[0].iov_base, sizeof(hdr)))
- return -EFAULT;
- if ((ntohs(hdr.tcm_type) & 0xC000) && (!capable(CAP_NET_ADMIN)))
- return -EACCES;
-
- return 0;
-}
-
static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
{
struct sock *sk = sock->sk;
@@ -742,15 +872,14 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
- struct tipc_msg *mhdr = &port->phdr;
- struct iovec *iov = m->msg_iov;
+ struct tipc_msg *mhdr = &tsk->phdr;
u32 dnode, dport;
- struct sk_buff *buf;
+ struct sk_buff_head head;
+ struct sk_buff *skb;
struct tipc_name_seq *seq = &dest->addr.nameseq;
u32 mtu;
long timeo;
- int rc = -EINVAL;
+ int rc;
if (unlikely(!dest))
return -EDESTADDRREQ;
@@ -774,23 +903,20 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
rc = -EISCONN;
goto exit;
}
- if (tsk->port.published) {
+ if (tsk->published) {
rc = -EOPNOTSUPP;
goto exit;
}
if (dest->addrtype == TIPC_ADDR_NAME) {
- tsk->port.conn_type = dest->addr.name.name.type;
- tsk->port.conn_instance = dest->addr.name.name.instance;
+ tsk->conn_type = dest->addr.name.name.type;
+ tsk->conn_instance = dest->addr.name.name.instance;
}
}
- rc = dest_name_check(dest, m);
- if (rc)
- goto exit;
timeo = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
if (dest->addrtype == TIPC_ADDR_MCAST) {
- rc = tipc_sendmcast(sock, seq, iov, dsz, timeo);
+ rc = tipc_sendmcast(sock, seq, m, dsz, timeo);
goto exit;
} else if (dest->addrtype == TIPC_ADDR_NAME) {
u32 type = dest->addr.name.name.type;
@@ -820,13 +946,16 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
}
new_mtu:
- mtu = tipc_node_get_mtu(dnode, tsk->port.ref);
- rc = tipc_msg_build(mhdr, iov, 0, dsz, mtu, &buf);
+ mtu = tipc_node_get_mtu(dnode, tsk->ref);
+ __skb_queue_head_init(&head);
+ rc = tipc_msg_build(mhdr, m, 0, dsz, mtu, &head);
if (rc < 0)
goto exit;
do {
- rc = tipc_link_xmit(buf, dnode, tsk->port.ref);
+ skb = skb_peek(&head);
+ TIPC_SKB_CB(skb)->wakeup_pending = tsk->link_cong;
+ rc = tipc_link_xmit(&head, dnode, tsk->ref);
if (likely(rc >= 0)) {
if (sock->state != SS_READY)
sock->state = SS_CONNECTING;
@@ -835,13 +964,12 @@ new_mtu:
}
if (rc == -EMSGSIZE)
goto new_mtu;
-
if (rc != -ELINKCONG)
break;
-
+ tsk->link_cong = 1;
rc = tipc_wait_for_sndmsg(sock, &timeo);
if (rc)
- kfree_skb_list(buf);
+ __skb_queue_purge(&head);
} while (!rc);
exit:
if (iocb)
@@ -873,8 +1001,8 @@ static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p)
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, timeo_p,
(!tsk->link_cong &&
- !tipc_sk_conn_cong(tsk)) ||
- !tsk->port.connected);
+ !tsk_conn_cong(tsk)) ||
+ !tsk->connected);
finish_wait(sk_sleep(sk), &wait);
} while (!done);
return 0;
@@ -897,11 +1025,10 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
- struct tipc_msg *mhdr = &port->phdr;
- struct sk_buff *buf;
+ struct tipc_msg *mhdr = &tsk->phdr;
+ struct sk_buff_head head;
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
- u32 ref = port->ref;
+ u32 ref = tsk->ref;
int rc = -EINVAL;
long timeo;
u32 dnode;
@@ -929,17 +1056,18 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
}
timeo = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
- dnode = tipc_port_peernode(port);
+ dnode = tsk_peer_node(tsk);
next:
- mtu = port->max_pkt;
+ mtu = tsk->max_pkt;
send = min_t(uint, dsz - sent, TIPC_MAX_USER_MSG_SIZE);
- rc = tipc_msg_build(mhdr, m->msg_iov, sent, send, mtu, &buf);
+ __skb_queue_head_init(&head);
+ rc = tipc_msg_build(mhdr, m, sent, send, mtu, &head);
if (unlikely(rc < 0))
goto exit;
do {
- if (likely(!tipc_sk_conn_cong(tsk))) {
- rc = tipc_link_xmit(buf, dnode, ref);
+ if (likely(!tsk_conn_cong(tsk))) {
+ rc = tipc_link_xmit(&head, dnode, ref);
if (likely(!rc)) {
tsk->sent_unacked++;
sent += send;
@@ -948,15 +1076,16 @@ next:
goto next;
}
if (rc == -EMSGSIZE) {
- port->max_pkt = tipc_node_get_mtu(dnode, ref);
+ tsk->max_pkt = tipc_node_get_mtu(dnode, ref);
goto next;
}
if (rc != -ELINKCONG)
break;
+ tsk->link_cong = 1;
}
rc = tipc_wait_for_sndpkt(sock, &timeo);
if (rc)
- kfree_skb_list(buf);
+ __skb_queue_purge(&head);
} while (!rc);
exit:
if (iocb)
@@ -984,29 +1113,25 @@ static int tipc_send_packet(struct kiocb *iocb, struct socket *sock,
return tipc_send_stream(iocb, sock, m, dsz);
}
-/**
- * auto_connect - complete connection setup to a remote port
- * @tsk: tipc socket structure
- * @msg: peer's response message
- *
- * Returns 0 on success, errno otherwise
+/* tipc_sk_finish_conn - complete the setup of a connection
*/
-static int auto_connect(struct tipc_sock *tsk, struct tipc_msg *msg)
+static void tipc_sk_finish_conn(struct tipc_sock *tsk, u32 peer_port,
+ u32 peer_node)
{
- struct tipc_port *port = &tsk->port;
- struct socket *sock = tsk->sk.sk_socket;
- struct tipc_portid peer;
-
- peer.ref = msg_origport(msg);
- peer.node = msg_orignode(msg);
-
- __tipc_port_connect(port->ref, port, &peer);
-
- if (msg_importance(msg) > TIPC_CRITICAL_IMPORTANCE)
- return -EINVAL;
- msg_set_importance(&port->phdr, (u32)msg_importance(msg));
- sock->state = SS_CONNECTED;
- return 0;
+ struct tipc_msg *msg = &tsk->phdr;
+
+ msg_set_destnode(msg, peer_node);
+ msg_set_destport(msg, peer_port);
+ msg_set_type(msg, TIPC_CONN_MSG);
+ msg_set_lookup_scope(msg, 0);
+ msg_set_hdr_sz(msg, SHORT_H_SIZE);
+
+ tsk->probing_interval = CONN_PROBING_INTERVAL;
+ tsk->probing_state = TIPC_CONN_OK;
+ tsk->connected = 1;
+ k_start_timer(&tsk->timer, tsk->probing_interval);
+ tipc_node_add_conn(peer_node, tsk->ref, peer_port);
+ tsk->max_pkt = tipc_node_get_mtu(peer_node, tsk->ref);
}
/**
@@ -1033,17 +1158,17 @@ static void set_orig_addr(struct msghdr *m, struct tipc_msg *msg)
}
/**
- * anc_data_recv - optionally capture ancillary data for received message
+ * tipc_sk_anc_data_recv - optionally capture ancillary data for received message
* @m: descriptor for message info
* @msg: received message header
- * @tport: TIPC port associated with message
+ * @tsk: TIPC port associated with message
*
* Note: Ancillary data is not captured if not requested by receiver.
*
* Returns 0 if successful, otherwise errno
*/
-static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
- struct tipc_port *tport)
+static int tipc_sk_anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
+ struct tipc_sock *tsk)
{
u32 anc_data[3];
u32 err;
@@ -1086,10 +1211,10 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
anc_data[2] = msg_nameupper(msg);
break;
case TIPC_CONN_MSG:
- has_name = (tport->conn_type != 0);
- anc_data[0] = tport->conn_type;
- anc_data[1] = tport->conn_instance;
- anc_data[2] = tport->conn_instance;
+ has_name = (tsk->conn_type != 0);
+ anc_data[0] = tsk->conn_type;
+ anc_data[1] = tsk->conn_instance;
+ anc_data[2] = tsk->conn_instance;
break;
default:
has_name = 0;
@@ -1103,6 +1228,24 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
return 0;
}
+static void tipc_sk_send_ack(struct tipc_sock *tsk, uint ack)
+{
+ struct sk_buff *skb = NULL;
+ struct tipc_msg *msg;
+ u32 peer_port = tsk_peer_port(tsk);
+ u32 dnode = tsk_peer_node(tsk);
+
+ if (!tsk->connected)
+ return;
+ skb = tipc_msg_create(CONN_MANAGER, CONN_ACK, INT_H_SIZE, 0, dnode,
+ tipc_own_addr, peer_port, tsk->ref, TIPC_OK);
+ if (!skb)
+ return;
+ msg = buf_msg(skb);
+ msg_set_msgcnt(msg, ack);
+ tipc_link_xmit_skb(skb, dnode, msg_link_selector(msg));
+}
+
static int tipc_wait_for_rcvmsg(struct socket *sock, long *timeop)
{
struct sock *sk = sock->sk;
@@ -1153,7 +1296,6 @@ static int tipc_recvmsg(struct kiocb *iocb, struct socket *sock,
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
struct sk_buff *buf;
struct tipc_msg *msg;
long timeo;
@@ -1188,7 +1330,7 @@ restart:
/* Discard an empty non-errored message & try again */
if ((!sz) && (!err)) {
- advance_rx_queue(sk);
+ tsk_advance_rx_queue(sk);
goto restart;
}
@@ -1196,7 +1338,7 @@ restart:
set_orig_addr(m, msg);
/* Capture ancillary data (optional) */
- res = anc_data_recv(m, msg, port);
+ res = tipc_sk_anc_data_recv(m, msg, tsk);
if (res)
goto exit;
@@ -1206,8 +1348,7 @@ restart:
sz = buf_len;
m->msg_flags |= MSG_TRUNC;
}
- res = skb_copy_datagram_iovec(buf, msg_hdr_sz(msg),
- m->msg_iov, sz);
+ res = skb_copy_datagram_msg(buf, msg_hdr_sz(msg), m, sz);
if (res)
goto exit;
res = sz;
@@ -1223,10 +1364,10 @@ restart:
if (likely(!(flags & MSG_PEEK))) {
if ((sock->state != SS_READY) &&
(++tsk->rcv_unacked >= TIPC_CONNACK_INTV)) {
- tipc_acknowledge(port->ref, tsk->rcv_unacked);
+ tipc_sk_send_ack(tsk, tsk->rcv_unacked);
tsk->rcv_unacked = 0;
}
- advance_rx_queue(sk);
+ tsk_advance_rx_queue(sk);
}
exit:
release_sock(sk);
@@ -1250,7 +1391,6 @@ static int tipc_recv_stream(struct kiocb *iocb, struct socket *sock,
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
struct sk_buff *buf;
struct tipc_msg *msg;
long timeo;
@@ -1288,14 +1428,14 @@ restart:
/* Discard an empty non-errored message & try again */
if ((!sz) && (!err)) {
- advance_rx_queue(sk);
+ tsk_advance_rx_queue(sk);
goto restart;
}
/* Optionally capture sender's address & ancillary data of first msg */
if (sz_copied == 0) {
set_orig_addr(m, msg);
- res = anc_data_recv(m, msg, port);
+ res = tipc_sk_anc_data_recv(m, msg, tsk);
if (res)
goto exit;
}
@@ -1308,8 +1448,8 @@ restart:
needed = (buf_len - sz_copied);
sz_to_copy = (sz <= needed) ? sz : needed;
- res = skb_copy_datagram_iovec(buf, msg_hdr_sz(msg) + offset,
- m->msg_iov, sz_to_copy);
+ res = skb_copy_datagram_msg(buf, msg_hdr_sz(msg) + offset,
+ m, sz_to_copy);
if (res)
goto exit;
@@ -1334,10 +1474,10 @@ restart:
/* Consume received message (optional) */
if (likely(!(flags & MSG_PEEK))) {
if (unlikely(++tsk->rcv_unacked >= TIPC_CONNACK_INTV)) {
- tipc_acknowledge(port->ref, tsk->rcv_unacked);
+ tipc_sk_send_ack(tsk, tsk->rcv_unacked);
tsk->rcv_unacked = 0;
}
- advance_rx_queue(sk);
+ tsk_advance_rx_queue(sk);
}
/* Loop around if more data is required */
@@ -1391,17 +1531,14 @@ static void tipc_data_ready(struct sock *sk)
* @tsk: TIPC socket
* @msg: message
*
- * Returns 0 (TIPC_OK) if everyting ok, -TIPC_ERR_NO_PORT otherwise
+ * Returns 0 (TIPC_OK) if everything ok, -TIPC_ERR_NO_PORT otherwise
*/
static int filter_connect(struct tipc_sock *tsk, struct sk_buff **buf)
{
struct sock *sk = &tsk->sk;
- struct tipc_port *port = &tsk->port;
struct socket *sock = sk->sk_socket;
struct tipc_msg *msg = buf_msg(*buf);
-
int retval = -TIPC_ERR_NO_PORT;
- int res;
if (msg_mcast(msg))
return retval;
@@ -1409,16 +1546,23 @@ static int filter_connect(struct tipc_sock *tsk, struct sk_buff **buf)
switch ((int)sock->state) {
case SS_CONNECTED:
/* Accept only connection-based messages sent by peer */
- if (msg_connected(msg) && tipc_port_peer_msg(port, msg)) {
+ if (tsk_peer_msg(tsk, msg)) {
if (unlikely(msg_errcode(msg))) {
sock->state = SS_DISCONNECTING;
- __tipc_port_disconnect(port);
+ tsk->connected = 0;
+ /* let timer expire on it's own */
+ tipc_node_remove_conn(tsk_peer_node(tsk),
+ tsk->ref);
}
retval = TIPC_OK;
}
break;
case SS_CONNECTING:
/* Accept only ACK or NACK message */
+
+ if (unlikely(!msg_connected(msg)))
+ break;
+
if (unlikely(msg_errcode(msg))) {
sock->state = SS_DISCONNECTING;
sk->sk_err = ECONNREFUSED;
@@ -1426,17 +1570,17 @@ static int filter_connect(struct tipc_sock *tsk, struct sk_buff **buf)
break;
}
- if (unlikely(!msg_connected(msg)))
- break;
-
- res = auto_connect(tsk, msg);
- if (res) {
+ if (unlikely(msg_importance(msg) > TIPC_CRITICAL_IMPORTANCE)) {
sock->state = SS_DISCONNECTING;
- sk->sk_err = -res;
+ sk->sk_err = EINVAL;
retval = TIPC_OK;
break;
}
+ tipc_sk_finish_conn(tsk, msg_origport(msg), msg_orignode(msg));
+ msg_set_importance(&tsk->phdr, msg_importance(msg));
+ sock->state = SS_CONNECTED;
+
/* If an incoming message is an 'ACK-', it should be
* discarded here because it doesn't contain useful
* data. In addition, we should try to wake up
@@ -1518,6 +1662,13 @@ static int filter_rcv(struct sock *sk, struct sk_buff *buf)
if (unlikely(msg_user(msg) == CONN_MANAGER))
return tipc_sk_proto_rcv(tsk, &onode, buf);
+ if (unlikely(msg_user(msg) == SOCK_WAKEUP)) {
+ kfree_skb(buf);
+ tsk->link_cong = 0;
+ sk->sk_write_space(sk);
+ return TIPC_OK;
+ }
+
/* Reject message if it is wrong sort of message for socket */
if (msg_type(msg) > TIPC_DIRECT_MSG)
return -TIPC_ERR_NO_PORT;
@@ -1547,20 +1698,20 @@ static int filter_rcv(struct sock *sk, struct sk_buff *buf)
/**
* tipc_backlog_rcv - handle incoming message from backlog queue
* @sk: socket
- * @buf: message
+ * @skb: message
*
* Caller must hold socket lock, but not port lock.
*
* Returns 0
*/
-static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *buf)
+static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *skb)
{
int rc;
u32 onode;
struct tipc_sock *tsk = tipc_sk(sk);
- uint truesize = buf->truesize;
+ uint truesize = skb->truesize;
- rc = filter_rcv(sk, buf);
+ rc = filter_rcv(sk, skb);
if (likely(!rc)) {
if (atomic_read(&tsk->dupl_rcvcnt) < TIPC_CONN_OVERLOAD_LIMIT)
@@ -1568,62 +1719,58 @@ static int tipc_backlog_rcv(struct sock *sk, struct sk_buff *buf)
return 0;
}
- if ((rc < 0) && !tipc_msg_reverse(buf, &onode, -rc))
+ if ((rc < 0) && !tipc_msg_reverse(skb, &onode, -rc))
return 0;
- tipc_link_xmit(buf, onode, 0);
+ tipc_link_xmit_skb(skb, onode, 0);
return 0;
}
/**
* tipc_sk_rcv - handle incoming message
- * @buf: buffer containing arriving message
+ * @skb: buffer containing arriving message
* Consumes buffer
* Returns 0 if success, or errno: -EHOSTUNREACH
*/
-int tipc_sk_rcv(struct sk_buff *buf)
+int tipc_sk_rcv(struct sk_buff *skb)
{
struct tipc_sock *tsk;
- struct tipc_port *port;
struct sock *sk;
- u32 dport = msg_destport(buf_msg(buf));
+ u32 dport = msg_destport(buf_msg(skb));
int rc = TIPC_OK;
uint limit;
u32 dnode;
/* Validate destination and message */
- port = tipc_port_lock(dport);
- if (unlikely(!port)) {
- rc = tipc_msg_eval(buf, &dnode);
+ tsk = tipc_sk_get(dport);
+ if (unlikely(!tsk)) {
+ rc = tipc_msg_eval(skb, &dnode);
goto exit;
}
-
- tsk = tipc_port_to_sock(port);
sk = &tsk->sk;
/* Queue message */
- bh_lock_sock(sk);
+ spin_lock_bh(&sk->sk_lock.slock);
if (!sock_owned_by_user(sk)) {
- rc = filter_rcv(sk, buf);
+ rc = filter_rcv(sk, skb);
} else {
if (sk->sk_backlog.len == 0)
atomic_set(&tsk->dupl_rcvcnt, 0);
- limit = rcvbuf_limit(sk, buf) + atomic_read(&tsk->dupl_rcvcnt);
- if (sk_add_backlog(sk, buf, limit))
+ limit = rcvbuf_limit(sk, skb) + atomic_read(&tsk->dupl_rcvcnt);
+ if (sk_add_backlog(sk, skb, limit))
rc = -TIPC_ERR_OVERLOAD;
}
- bh_unlock_sock(sk);
- tipc_port_unlock(port);
-
+ spin_unlock_bh(&sk->sk_lock.slock);
+ tipc_sk_put(tsk);
if (likely(!rc))
return 0;
exit:
- if ((rc < 0) && !tipc_msg_reverse(buf, &dnode, -rc))
+ if ((rc < 0) && !tipc_msg_reverse(skb, &dnode, -rc))
return -EHOSTUNREACH;
- tipc_link_xmit(buf, dnode, 0);
+ tipc_link_xmit_skb(skb, dnode, 0);
return (rc < 0) ? -EHOSTUNREACH : 0;
}
@@ -1803,10 +1950,8 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
{
struct sock *new_sk, *sk = sock->sk;
struct sk_buff *buf;
- struct tipc_port *new_port;
+ struct tipc_sock *new_tsock;
struct tipc_msg *msg;
- struct tipc_portid peer;
- u32 new_ref;
long timeo;
int res;
@@ -1828,8 +1973,7 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
goto exit;
new_sk = new_sock->sk;
- new_port = &tipc_sk(new_sk)->port;
- new_ref = new_port->ref;
+ new_tsock = tipc_sk(new_sk);
msg = buf_msg(buf);
/* we lock on new_sk; but lockdep sees the lock on sk */
@@ -1839,18 +1983,16 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
* Reject any stray messages received by new socket
* before the socket lock was taken (very, very unlikely)
*/
- reject_rx_queue(new_sk);
+ tsk_rej_rx_queue(new_sk);
/* Connect new socket to it's peer */
- peer.ref = msg_origport(msg);
- peer.node = msg_orignode(msg);
- tipc_port_connect(new_ref, &peer);
+ tipc_sk_finish_conn(new_tsock, msg_origport(msg), msg_orignode(msg));
new_sock->state = SS_CONNECTED;
- tipc_port_set_importance(new_port, msg_importance(msg));
+ tsk_set_importance(new_tsock, msg_importance(msg));
if (msg_named(msg)) {
- new_port->conn_type = msg_nametype(msg);
- new_port->conn_instance = msg_nameinst(msg);
+ new_tsock->conn_type = msg_nametype(msg);
+ new_tsock->conn_instance = msg_nameinst(msg);
}
/*
@@ -1860,7 +2002,7 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
if (!msg_data_sz(msg)) {
struct msghdr m = {NULL,};
- advance_rx_queue(sk);
+ tsk_advance_rx_queue(sk);
tipc_send_packet(NULL, new_sock, &m, 0);
} else {
__skb_dequeue(&sk->sk_receive_queue);
@@ -1886,9 +2028,8 @@ static int tipc_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
- struct sk_buff *buf;
- u32 peer;
+ struct sk_buff *skb;
+ u32 dnode;
int res;
if (how != SHUT_RDWR)
@@ -1902,21 +2043,27 @@ static int tipc_shutdown(struct socket *sock, int how)
restart:
/* Disconnect and send a 'FIN+' or 'FIN-' message to peer */
- buf = __skb_dequeue(&sk->sk_receive_queue);
- if (buf) {
- if (TIPC_SKB_CB(buf)->handle != NULL) {
- kfree_skb(buf);
+ skb = __skb_dequeue(&sk->sk_receive_queue);
+ if (skb) {
+ if (TIPC_SKB_CB(skb)->handle != NULL) {
+ kfree_skb(skb);
goto restart;
}
- tipc_port_disconnect(port->ref);
- if (tipc_msg_reverse(buf, &peer, TIPC_CONN_SHUTDOWN))
- tipc_link_xmit(buf, peer, 0);
+ if (tipc_msg_reverse(skb, &dnode, TIPC_CONN_SHUTDOWN))
+ tipc_link_xmit_skb(skb, dnode, tsk->ref);
+ tipc_node_remove_conn(dnode, tsk->ref);
} else {
- tipc_port_shutdown(port->ref);
+ dnode = tsk_peer_node(tsk);
+ skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE,
+ TIPC_CONN_MSG, SHORT_H_SIZE,
+ 0, dnode, tipc_own_addr,
+ tsk_peer_port(tsk),
+ tsk->ref, TIPC_CONN_SHUTDOWN);
+ tipc_link_xmit_skb(skb, dnode, tsk->ref);
}
-
+ tsk->connected = 0;
sock->state = SS_DISCONNECTING;
-
+ tipc_node_remove_conn(dnode, tsk->ref);
/* fall through */
case SS_DISCONNECTING:
@@ -1937,6 +2084,432 @@ restart:
return res;
}
+static void tipc_sk_timeout(unsigned long ref)
+{
+ struct tipc_sock *tsk;
+ struct sock *sk;
+ struct sk_buff *skb = NULL;
+ u32 peer_port, peer_node;
+
+ tsk = tipc_sk_get(ref);
+ if (!tsk)
+ return;
+
+ sk = &tsk->sk;
+ bh_lock_sock(sk);
+ if (!tsk->connected) {
+ bh_unlock_sock(sk);
+ goto exit;
+ }
+ peer_port = tsk_peer_port(tsk);
+ peer_node = tsk_peer_node(tsk);
+
+ if (tsk->probing_state == TIPC_CONN_PROBING) {
+ /* Previous probe not answered -> self abort */
+ skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
+ SHORT_H_SIZE, 0, tipc_own_addr,
+ peer_node, ref, peer_port,
+ TIPC_ERR_NO_PORT);
+ } else {
+ skb = tipc_msg_create(CONN_MANAGER, CONN_PROBE, INT_H_SIZE,
+ 0, peer_node, tipc_own_addr,
+ peer_port, ref, TIPC_OK);
+ tsk->probing_state = TIPC_CONN_PROBING;
+ k_start_timer(&tsk->timer, tsk->probing_interval);
+ }
+ bh_unlock_sock(sk);
+ if (skb)
+ tipc_link_xmit_skb(skb, peer_node, ref);
+exit:
+ tipc_sk_put(tsk);
+}
+
+static int tipc_sk_publish(struct tipc_sock *tsk, uint scope,
+ struct tipc_name_seq const *seq)
+{
+ struct publication *publ;
+ u32 key;
+
+ if (tsk->connected)
+ return -EINVAL;
+ key = tsk->ref + tsk->pub_count + 1;
+ if (key == tsk->ref)
+ return -EADDRINUSE;
+
+ publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper,
+ scope, tsk->ref, key);
+ if (unlikely(!publ))
+ return -EINVAL;
+
+ list_add(&publ->pport_list, &tsk->publications);
+ tsk->pub_count++;
+ tsk->published = 1;
+ return 0;
+}
+
+static int tipc_sk_withdraw(struct tipc_sock *tsk, uint scope,
+ struct tipc_name_seq const *seq)
+{
+ struct publication *publ;
+ struct publication *safe;
+ int rc = -EINVAL;
+
+ list_for_each_entry_safe(publ, safe, &tsk->publications, pport_list) {
+ if (seq) {
+ if (publ->scope != scope)
+ continue;
+ if (publ->type != seq->type)
+ continue;
+ if (publ->lower != seq->lower)
+ continue;
+ if (publ->upper != seq->upper)
+ break;
+ tipc_nametbl_withdraw(publ->type, publ->lower,
+ publ->ref, publ->key);
+ rc = 0;
+ break;
+ }
+ tipc_nametbl_withdraw(publ->type, publ->lower,
+ publ->ref, publ->key);
+ rc = 0;
+ }
+ if (list_empty(&tsk->publications))
+ tsk->published = 0;
+ return rc;
+}
+
+static int tipc_sk_show(struct tipc_sock *tsk, char *buf,
+ int len, int full_id)
+{
+ struct publication *publ;
+ int ret;
+
+ if (full_id)
+ ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:",
+ tipc_zone(tipc_own_addr),
+ tipc_cluster(tipc_own_addr),
+ tipc_node(tipc_own_addr), tsk->ref);
+ else
+ ret = tipc_snprintf(buf, len, "%-10u:", tsk->ref);
+
+ if (tsk->connected) {
+ u32 dport = tsk_peer_port(tsk);
+ u32 destnode = tsk_peer_node(tsk);
+
+ ret += tipc_snprintf(buf + ret, len - ret,
+ " connected to <%u.%u.%u:%u>",
+ tipc_zone(destnode),
+ tipc_cluster(destnode),
+ tipc_node(destnode), dport);
+ if (tsk->conn_type != 0)
+ ret += tipc_snprintf(buf + ret, len - ret,
+ " via {%u,%u}", tsk->conn_type,
+ tsk->conn_instance);
+ } else if (tsk->published) {
+ ret += tipc_snprintf(buf + ret, len - ret, " bound to");
+ list_for_each_entry(publ, &tsk->publications, pport_list) {
+ if (publ->lower == publ->upper)
+ ret += tipc_snprintf(buf + ret, len - ret,
+ " {%u,%u}", publ->type,
+ publ->lower);
+ else
+ ret += tipc_snprintf(buf + ret, len - ret,
+ " {%u,%u,%u}", publ->type,
+ publ->lower, publ->upper);
+ }
+ }
+ ret += tipc_snprintf(buf + ret, len - ret, "\n");
+ return ret;
+}
+
+struct sk_buff *tipc_sk_socks_show(void)
+{
+ struct sk_buff *buf;
+ struct tlv_desc *rep_tlv;
+ char *pb;
+ int pb_len;
+ struct tipc_sock *tsk;
+ int str_len = 0;
+ u32 ref = 0;
+
+ buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN));
+ if (!buf)
+ return NULL;
+ rep_tlv = (struct tlv_desc *)buf->data;
+ pb = TLV_DATA(rep_tlv);
+ pb_len = ULTRA_STRING_MAX_LEN;
+
+ tsk = tipc_sk_get_next(&ref);
+ for (; tsk; tsk = tipc_sk_get_next(&ref)) {
+ lock_sock(&tsk->sk);
+ str_len += tipc_sk_show(tsk, pb + str_len,
+ pb_len - str_len, 0);
+ release_sock(&tsk->sk);
+ tipc_sk_put(tsk);
+ }
+ str_len += 1; /* for "\0" */
+ skb_put(buf, TLV_SPACE(str_len));
+ TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
+
+ return buf;
+}
+
+/* tipc_sk_reinit: set non-zero address in all existing sockets
+ * when we go from standalone to network mode.
+ */
+void tipc_sk_reinit(void)
+{
+ struct tipc_msg *msg;
+ u32 ref = 0;
+ struct tipc_sock *tsk = tipc_sk_get_next(&ref);
+
+ for (; tsk; tsk = tipc_sk_get_next(&ref)) {
+ lock_sock(&tsk->sk);
+ msg = &tsk->phdr;
+ msg_set_prevnode(msg, tipc_own_addr);
+ msg_set_orignode(msg, tipc_own_addr);
+ release_sock(&tsk->sk);
+ tipc_sk_put(tsk);
+ }
+}
+
+/**
+ * struct reference - TIPC socket reference entry
+ * @tsk: pointer to socket associated with reference entry
+ * @ref: reference value for socket (combines instance & array index info)
+ */
+struct reference {
+ struct tipc_sock *tsk;
+ u32 ref;
+};
+
+/**
+ * struct tipc_ref_table - table of TIPC socket reference entries
+ * @entries: pointer to array of reference entries
+ * @capacity: array index of first unusable entry
+ * @init_point: array index of first uninitialized entry
+ * @first_free: array index of first unused socket reference entry
+ * @last_free: array index of last unused socket reference entry
+ * @index_mask: bitmask for array index portion of reference values
+ * @start_mask: initial value for instance value portion of reference values
+ */
+struct ref_table {
+ struct reference *entries;
+ u32 capacity;
+ u32 init_point;
+ u32 first_free;
+ u32 last_free;
+ u32 index_mask;
+ u32 start_mask;
+};
+
+/* Socket reference table consists of 2**N entries.
+ *
+ * State Socket ptr Reference
+ * ----- ---------- ---------
+ * In use non-NULL XXXX|own index
+ * (XXXX changes each time entry is acquired)
+ * Free NULL YYYY|next free index
+ * (YYYY is one more than last used XXXX)
+ * Uninitialized NULL 0
+ *
+ * Entry 0 is not used; this allows index 0 to denote the end of the free list.
+ *
+ * Note that a reference value of 0 does not necessarily indicate that an
+ * entry is uninitialized, since the last entry in the free list could also
+ * have a reference value of 0 (although this is unlikely).
+ */
+
+static struct ref_table tipc_ref_table;
+
+static DEFINE_RWLOCK(ref_table_lock);
+
+/**
+ * tipc_ref_table_init - create reference table for sockets
+ */
+int tipc_sk_ref_table_init(u32 req_sz, u32 start)
+{
+ struct reference *table;
+ u32 actual_sz;
+
+ /* account for unused entry, then round up size to a power of 2 */
+
+ req_sz++;
+ for (actual_sz = 16; actual_sz < req_sz; actual_sz <<= 1) {
+ /* do nothing */
+ };
+
+ /* allocate table & mark all entries as uninitialized */
+ table = vzalloc(actual_sz * sizeof(struct reference));
+ if (table == NULL)
+ return -ENOMEM;
+
+ tipc_ref_table.entries = table;
+ tipc_ref_table.capacity = req_sz;
+ tipc_ref_table.init_point = 1;
+ tipc_ref_table.first_free = 0;
+ tipc_ref_table.last_free = 0;
+ tipc_ref_table.index_mask = actual_sz - 1;
+ tipc_ref_table.start_mask = start & ~tipc_ref_table.index_mask;
+
+ return 0;
+}
+
+/**
+ * tipc_ref_table_stop - destroy reference table for sockets
+ */
+void tipc_sk_ref_table_stop(void)
+{
+ if (!tipc_ref_table.entries)
+ return;
+ vfree(tipc_ref_table.entries);
+ tipc_ref_table.entries = NULL;
+}
+
+/* tipc_ref_acquire - create reference to a socket
+ *
+ * Register an socket pointer in the reference table.
+ * Returns a unique reference value that is used from then on to retrieve the
+ * socket pointer, or to determine if the socket has been deregistered.
+ */
+u32 tipc_sk_ref_acquire(struct tipc_sock *tsk)
+{
+ u32 index;
+ u32 index_mask;
+ u32 next_plus_upper;
+ u32 ref = 0;
+ struct reference *entry;
+
+ if (unlikely(!tsk)) {
+ pr_err("Attempt to acquire ref. to non-existent obj\n");
+ return 0;
+ }
+ if (unlikely(!tipc_ref_table.entries)) {
+ pr_err("Ref. table not found in acquisition attempt\n");
+ return 0;
+ }
+
+ /* Take a free entry, if available; otherwise initialize a new one */
+ write_lock_bh(&ref_table_lock);
+ index = tipc_ref_table.first_free;
+ entry = &tipc_ref_table.entries[index];
+
+ if (likely(index)) {
+ index = tipc_ref_table.first_free;
+ entry = &tipc_ref_table.entries[index];
+ index_mask = tipc_ref_table.index_mask;
+ next_plus_upper = entry->ref;
+ tipc_ref_table.first_free = next_plus_upper & index_mask;
+ ref = (next_plus_upper & ~index_mask) + index;
+ entry->tsk = tsk;
+ } else if (tipc_ref_table.init_point < tipc_ref_table.capacity) {
+ index = tipc_ref_table.init_point++;
+ entry = &tipc_ref_table.entries[index];
+ ref = tipc_ref_table.start_mask + index;
+ }
+
+ if (ref) {
+ entry->ref = ref;
+ entry->tsk = tsk;
+ }
+ write_unlock_bh(&ref_table_lock);
+ return ref;
+}
+
+/* tipc_sk_ref_discard - invalidate reference to an socket
+ *
+ * Disallow future references to an socket and free up the entry for re-use.
+ */
+void tipc_sk_ref_discard(u32 ref)
+{
+ struct reference *entry;
+ u32 index;
+ u32 index_mask;
+
+ if (unlikely(!tipc_ref_table.entries)) {
+ pr_err("Ref. table not found during discard attempt\n");
+ return;
+ }
+
+ index_mask = tipc_ref_table.index_mask;
+ index = ref & index_mask;
+ entry = &tipc_ref_table.entries[index];
+
+ write_lock_bh(&ref_table_lock);
+
+ if (unlikely(!entry->tsk)) {
+ pr_err("Attempt to discard ref. to non-existent socket\n");
+ goto exit;
+ }
+ if (unlikely(entry->ref != ref)) {
+ pr_err("Attempt to discard non-existent reference\n");
+ goto exit;
+ }
+
+ /* Mark entry as unused; increment instance part of entry's
+ * reference to invalidate any subsequent references
+ */
+
+ entry->tsk = NULL;
+ entry->ref = (ref & ~index_mask) + (index_mask + 1);
+
+ /* Append entry to free entry list */
+ if (unlikely(tipc_ref_table.first_free == 0))
+ tipc_ref_table.first_free = index;
+ else
+ tipc_ref_table.entries[tipc_ref_table.last_free].ref |= index;
+ tipc_ref_table.last_free = index;
+exit:
+ write_unlock_bh(&ref_table_lock);
+}
+
+/* tipc_sk_get - find referenced socket and return pointer to it
+ */
+struct tipc_sock *tipc_sk_get(u32 ref)
+{
+ struct reference *entry;
+ struct tipc_sock *tsk;
+
+ if (unlikely(!tipc_ref_table.entries))
+ return NULL;
+ read_lock_bh(&ref_table_lock);
+ entry = &tipc_ref_table.entries[ref & tipc_ref_table.index_mask];
+ tsk = entry->tsk;
+ if (likely(tsk && (entry->ref == ref)))
+ sock_hold(&tsk->sk);
+ else
+ tsk = NULL;
+ read_unlock_bh(&ref_table_lock);
+ return tsk;
+}
+
+/* tipc_sk_get_next - lock & return next socket after referenced one
+*/
+struct tipc_sock *tipc_sk_get_next(u32 *ref)
+{
+ struct reference *entry;
+ struct tipc_sock *tsk = NULL;
+ uint index = *ref & tipc_ref_table.index_mask;
+
+ read_lock_bh(&ref_table_lock);
+ while (++index < tipc_ref_table.capacity) {
+ entry = &tipc_ref_table.entries[index];
+ if (!entry->tsk)
+ continue;
+ tsk = entry->tsk;
+ sock_hold(&tsk->sk);
+ *ref = entry->ref;
+ break;
+ }
+ read_unlock_bh(&ref_table_lock);
+ return tsk;
+}
+
+static void tipc_sk_put(struct tipc_sock *tsk)
+{
+ sock_put(&tsk->sk);
+}
+
/**
* tipc_setsockopt - set socket option
* @sock: socket structure
@@ -1955,7 +2528,6 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
u32 value;
int res;
@@ -1973,16 +2545,16 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
switch (opt) {
case TIPC_IMPORTANCE:
- res = tipc_port_set_importance(port, value);
+ res = tsk_set_importance(tsk, value);
break;
case TIPC_SRC_DROPPABLE:
if (sock->type != SOCK_STREAM)
- tipc_port_set_unreliable(port, value);
+ tsk_set_unreliable(tsk, value);
else
res = -ENOPROTOOPT;
break;
case TIPC_DEST_DROPPABLE:
- tipc_port_set_unreturnable(port, value);
+ tsk_set_unreturnable(tsk, value);
break;
case TIPC_CONN_TIMEOUT:
tipc_sk(sk)->conn_timeout = value;
@@ -2015,7 +2587,6 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
- struct tipc_port *port = &tsk->port;
int len;
u32 value;
int res;
@@ -2032,16 +2603,16 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
switch (opt) {
case TIPC_IMPORTANCE:
- value = tipc_port_importance(port);
+ value = tsk_importance(tsk);
break;
case TIPC_SRC_DROPPABLE:
- value = tipc_port_unreliable(port);
+ value = tsk_unreliable(tsk);
break;
case TIPC_DEST_DROPPABLE:
- value = tipc_port_unreturnable(port);
+ value = tsk_unreturnable(tsk);
break;
case TIPC_CONN_TIMEOUT:
- value = tipc_sk(sk)->conn_timeout;
+ value = tsk->conn_timeout;
/* no need to set "res", since already 0 at this point */
break;
case TIPC_NODE_RECVQ_DEPTH:
@@ -2077,7 +2648,7 @@ static int tipc_ioctl(struct socket *sk, unsigned int cmd, unsigned long arg)
case SIOCGETLINKNAME:
if (copy_from_user(&lnr, argp, sizeof(lnr)))
return -EFAULT;
- if (!tipc_node_get_linkname(lnr.bearer_id, lnr.peer,
+ if (!tipc_node_get_linkname(lnr.bearer_id & 0xffff, lnr.peer,
lnr.linkname, TIPC_MAX_LINK_NAME)) {
if (copy_to_user(argp, &lnr, sizeof(lnr)))
return -EFAULT;
@@ -2206,3 +2777,233 @@ void tipc_socket_stop(void)
sock_unregister(tipc_family_ops.family);
proto_unregister(&tipc_proto);
}
+
+/* Caller should hold socket lock for the passed tipc socket. */
+static int __tipc_nl_add_sk_con(struct sk_buff *skb, struct tipc_sock *tsk)
+{
+ u32 peer_node;
+ u32 peer_port;
+ struct nlattr *nest;
+
+ peer_node = tsk_peer_node(tsk);
+ peer_port = tsk_peer_port(tsk);
+
+ nest = nla_nest_start(skb, TIPC_NLA_SOCK_CON);
+
+ if (nla_put_u32(skb, TIPC_NLA_CON_NODE, peer_node))
+ goto msg_full;
+ if (nla_put_u32(skb, TIPC_NLA_CON_SOCK, peer_port))
+ goto msg_full;
+
+ if (tsk->conn_type != 0) {
+ if (nla_put_flag(skb, TIPC_NLA_CON_FLAG))
+ goto msg_full;
+ if (nla_put_u32(skb, TIPC_NLA_CON_TYPE, tsk->conn_type))
+ goto msg_full;
+ if (nla_put_u32(skb, TIPC_NLA_CON_INST, tsk->conn_instance))
+ goto msg_full;
+ }
+ nla_nest_end(skb, nest);
+
+ return 0;
+
+msg_full:
+ nla_nest_cancel(skb, nest);
+
+ return -EMSGSIZE;
+}
+
+/* Caller should hold socket lock for the passed tipc socket. */
+static int __tipc_nl_add_sk(struct sk_buff *skb, struct netlink_callback *cb,
+ struct tipc_sock *tsk)
+{
+ int err;
+ void *hdr;
+ struct nlattr *attrs;
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &tipc_genl_v2_family, NLM_F_MULTI, TIPC_NL_SOCK_GET);
+ if (!hdr)
+ goto msg_cancel;
+
+ attrs = nla_nest_start(skb, TIPC_NLA_SOCK);
+ if (!attrs)
+ goto genlmsg_cancel;
+ if (nla_put_u32(skb, TIPC_NLA_SOCK_REF, tsk->ref))
+ goto attr_msg_cancel;
+ if (nla_put_u32(skb, TIPC_NLA_SOCK_ADDR, tipc_own_addr))
+ goto attr_msg_cancel;
+
+ if (tsk->connected) {
+ err = __tipc_nl_add_sk_con(skb, tsk);
+ if (err)
+ goto attr_msg_cancel;
+ } else if (!list_empty(&tsk->publications)) {
+ if (nla_put_flag(skb, TIPC_NLA_SOCK_HAS_PUBL))
+ goto attr_msg_cancel;
+ }
+ nla_nest_end(skb, attrs);
+ genlmsg_end(skb, hdr);
+
+ return 0;
+
+attr_msg_cancel:
+ nla_nest_cancel(skb, attrs);
+genlmsg_cancel:
+ genlmsg_cancel(skb, hdr);
+msg_cancel:
+ return -EMSGSIZE;
+}
+
+int tipc_nl_sk_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ struct tipc_sock *tsk;
+ u32 prev_ref = cb->args[0];
+ u32 ref = prev_ref;
+
+ tsk = tipc_sk_get_next(&ref);
+ for (; tsk; tsk = tipc_sk_get_next(&ref)) {
+ lock_sock(&tsk->sk);
+ err = __tipc_nl_add_sk(skb, cb, tsk);
+ release_sock(&tsk->sk);
+ tipc_sk_put(tsk);
+ if (err)
+ break;
+
+ prev_ref = ref;
+ }
+
+ cb->args[0] = prev_ref;
+
+ return skb->len;
+}
+
+/* Caller should hold socket lock for the passed tipc socket. */
+static int __tipc_nl_add_sk_publ(struct sk_buff *skb,
+ struct netlink_callback *cb,
+ struct publication *publ)
+{
+ void *hdr;
+ struct nlattr *attrs;
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &tipc_genl_v2_family, NLM_F_MULTI, TIPC_NL_PUBL_GET);
+ if (!hdr)
+ goto msg_cancel;
+
+ attrs = nla_nest_start(skb, TIPC_NLA_PUBL);
+ if (!attrs)
+ goto genlmsg_cancel;
+
+ if (nla_put_u32(skb, TIPC_NLA_PUBL_KEY, publ->key))
+ goto attr_msg_cancel;
+ if (nla_put_u32(skb, TIPC_NLA_PUBL_TYPE, publ->type))
+ goto attr_msg_cancel;
+ if (nla_put_u32(skb, TIPC_NLA_PUBL_LOWER, publ->lower))
+ goto attr_msg_cancel;
+ if (nla_put_u32(skb, TIPC_NLA_PUBL_UPPER, publ->upper))
+ goto attr_msg_cancel;
+
+ nla_nest_end(skb, attrs);
+ genlmsg_end(skb, hdr);
+
+ return 0;
+
+attr_msg_cancel:
+ nla_nest_cancel(skb, attrs);
+genlmsg_cancel:
+ genlmsg_cancel(skb, hdr);
+msg_cancel:
+ return -EMSGSIZE;
+}
+
+/* Caller should hold socket lock for the passed tipc socket. */
+static int __tipc_nl_list_sk_publ(struct sk_buff *skb,
+ struct netlink_callback *cb,
+ struct tipc_sock *tsk, u32 *last_publ)
+{
+ int err;
+ struct publication *p;
+
+ if (*last_publ) {
+ list_for_each_entry(p, &tsk->publications, pport_list) {
+ if (p->key == *last_publ)
+ break;
+ }
+ if (p->key != *last_publ) {
+ /* We never set seq or call nl_dump_check_consistent()
+ * this means that setting prev_seq here will cause the
+ * consistence check to fail in the netlink callback
+ * handler. Resulting in the last NLMSG_DONE message
+ * having the NLM_F_DUMP_INTR flag set.
+ */
+ cb->prev_seq = 1;
+ *last_publ = 0;
+ return -EPIPE;
+ }
+ } else {
+ p = list_first_entry(&tsk->publications, struct publication,
+ pport_list);
+ }
+
+ list_for_each_entry_from(p, &tsk->publications, pport_list) {
+ err = __tipc_nl_add_sk_publ(skb, cb, p);
+ if (err) {
+ *last_publ = p->key;
+ return err;
+ }
+ }
+ *last_publ = 0;
+
+ return 0;
+}
+
+int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int err;
+ u32 tsk_ref = cb->args[0];
+ u32 last_publ = cb->args[1];
+ u32 done = cb->args[2];
+ struct tipc_sock *tsk;
+
+ if (!tsk_ref) {
+ struct nlattr **attrs;
+ struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
+
+ err = tipc_nlmsg_parse(cb->nlh, &attrs);
+ if (err)
+ return err;
+
+ err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX,
+ attrs[TIPC_NLA_SOCK],
+ tipc_nl_sock_policy);
+ if (err)
+ return err;
+
+ if (!sock[TIPC_NLA_SOCK_REF])
+ return -EINVAL;
+
+ tsk_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
+ }
+
+ if (done)
+ return 0;
+
+ tsk = tipc_sk_get(tsk_ref);
+ if (!tsk)
+ return -EINVAL;
+
+ lock_sock(&tsk->sk);
+ err = __tipc_nl_list_sk_publ(skb, cb, tsk, &last_publ);
+ if (!err)
+ done = 1;
+ release_sock(&tsk->sk);
+ tipc_sk_put(tsk);
+
+ cb->args[0] = tsk_ref;
+ cb->args[1] = last_publ;
+ cb->args[2] = done;
+
+ return skb->len;
+}
diff --git a/net/tipc/socket.h b/net/tipc/socket.h
index 43b75b3cece..d3408938700 100644
--- a/net/tipc/socket.h
+++ b/net/tipc/socket.h
@@ -35,56 +35,20 @@
#ifndef _TIPC_SOCK_H
#define _TIPC_SOCK_H
-#include "port.h"
#include <net/sock.h>
+#include <net/genetlink.h>
-#define TIPC_CONN_OK 0
-#define TIPC_CONN_PROBING 1
-
-/**
- * struct tipc_sock - TIPC socket structure
- * @sk: socket - interacts with 'port' and with user via the socket API
- * @port: port - interacts with 'sk' and with the rest of the TIPC stack
- * @peer_name: the peer of the connection, if any
- * @conn_timeout: the time we can wait for an unresponded setup request
- * @dupl_rcvcnt: number of bytes counted twice, in both backlog and rcv queue
- * @link_cong: non-zero if owner must sleep because of link congestion
- * @sent_unacked: # messages sent by socket, and not yet acked by peer
- * @rcv_unacked: # messages read by user, but not yet acked back to peer
- */
-
-struct tipc_sock {
- struct sock sk;
- struct tipc_port port;
- unsigned int conn_timeout;
- atomic_t dupl_rcvcnt;
- int link_cong;
- uint sent_unacked;
- uint rcv_unacked;
-};
-
-static inline struct tipc_sock *tipc_sk(const struct sock *sk)
-{
- return container_of(sk, struct tipc_sock, sk);
-}
-
-static inline struct tipc_sock *tipc_port_to_sock(const struct tipc_port *port)
-{
- return container_of(port, struct tipc_sock, port);
-}
-
-static inline void tipc_sock_wakeup(struct tipc_sock *tsk)
-{
- tsk->sk.sk_write_space(&tsk->sk);
-}
-
-static inline int tipc_sk_conn_cong(struct tipc_sock *tsk)
-{
- return tsk->sent_unacked >= TIPC_FLOWCTRL_WIN;
-}
-
+#define TIPC_CONNACK_INTV 256
+#define TIPC_FLOWCTRL_WIN (TIPC_CONNACK_INTV * 2)
+#define TIPC_CONN_OVERLOAD_LIMIT ((TIPC_FLOWCTRL_WIN * 2 + 1) * \
+ SKB_TRUESIZE(TIPC_MAX_USER_MSG_SIZE))
int tipc_sk_rcv(struct sk_buff *buf);
-
+struct sk_buff *tipc_sk_socks_show(void);
void tipc_sk_mcast_rcv(struct sk_buff *buf);
+void tipc_sk_reinit(void);
+int tipc_sk_ref_table_init(u32 requested_size, u32 start);
+void tipc_sk_ref_table_stop(void);
+int tipc_nl_sk_dump(struct sk_buff *skb, struct netlink_callback *cb);
+int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb);
#endif
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 642437231ad..0344206b984 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -36,7 +36,6 @@
#include "core.h"
#include "name_table.h"
-#include "port.h"
#include "subscr.h"
/**
@@ -306,7 +305,6 @@ static int subscr_subscribe(struct tipc_subscr *s,
kfree(sub);
return -EINVAL;
}
- INIT_LIST_HEAD(&sub->nameseq_list);
list_add(&sub->subscription_list, &subscriber->subscription_list);
sub->subscriber = subscriber;
sub->swap = swap;
diff --git a/net/tipc/sysctl.c b/net/tipc/sysctl.c
index f3fef93325a..1a779b1e851 100644
--- a/net/tipc/sysctl.c
+++ b/net/tipc/sysctl.c
@@ -47,6 +47,13 @@ static struct ctl_table tipc_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec,
},
+ {
+ .procname = "named_timeout",
+ .data = &sysctl_tipc_named_timeout,
+ .maxlen = sizeof(sysctl_tipc_named_timeout),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
{}
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-16 10:27:15 +0000