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-rw-r--r--net/tipc/port.c514
1 files changed, 0 insertions, 514 deletions
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);
-}
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