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-rw-r--r--net/sctp/Kconfig4
-rw-r--r--net/sctp/Makefile4
-rw-r--r--net/sctp/associola.c4
-rw-r--r--net/sctp/bind_addr.c37
-rw-r--r--net/sctp/input.c38
-rw-r--r--net/sctp/ipv6.c20
-rw-r--r--net/sctp/output.c14
-rw-r--r--net/sctp/outqueue.c34
-rw-r--r--net/sctp/proc.c141
-rw-r--r--net/sctp/protocol.c35
-rw-r--r--net/sctp/sm_make_chunk.c7
-rw-r--r--net/sctp/sm_sideeffect.c44
-rw-r--r--net/sctp/sm_statefuns.c16
-rw-r--r--net/sctp/socket.c383
-rw-r--r--net/sctp/transport.c3
15 files changed, 608 insertions, 176 deletions
diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig
index 0b79f869c4e..58b3e882a18 100644
--- a/net/sctp/Kconfig
+++ b/net/sctp/Kconfig
@@ -47,11 +47,11 @@ config SCTP_DBG_MSG
config SCTP_DBG_OBJCNT
bool "SCTP: Debug object counts"
+ depends on PROC_FS
help
If you say Y, this will enable debugging support for counting the
type of objects that are currently allocated. This is useful for
- identifying memory leaks. If the /proc filesystem is enabled this
- debug information can be viewed by
+ identifying memory leaks. This debug information can be viewed by
'cat /proc/net/sctp/sctp_dbg_objcnt'
If unsure, say N
diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index f5356b9d5ee..6b794734380 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -9,10 +9,10 @@ sctp-y := sm_statetable.o sm_statefuns.o sm_sideeffect.o \
transport.o chunk.o sm_make_chunk.o ulpevent.o \
inqueue.o outqueue.o ulpqueue.o command.o \
tsnmap.o bind_addr.o socket.o primitive.o \
- output.o input.o debug.o ssnmap.o proc.o \
- auth.o
+ output.o input.o debug.o ssnmap.o auth.o
sctp-$(CONFIG_SCTP_DBG_OBJCNT) += objcnt.o
+sctp-$(CONFIG_PROC_FS) += proc.o
sctp-$(CONFIG_SYSCTL) += sysctl.o
sctp-$(subst m,y,$(CONFIG_IPV6)) += ipv6.o
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 024c3ebd966..ec2a0a33fd7 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -136,6 +136,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
/* Set association default SACK delay */
asoc->sackdelay = msecs_to_jiffies(sp->sackdelay);
+ asoc->sackfreq = sp->sackfreq;
/* Set the association default flags controlling
* Heartbeat, SACK delay, and Path MTU Discovery.
@@ -261,6 +262,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
* already received one packet.]
*/
asoc->peer.sack_needed = 1;
+ asoc->peer.sack_cnt = 0;
/* Assume that the peer will tell us if he recognizes ASCONF
* as part of INIT exchange.
@@ -624,6 +626,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
* association configured value.
*/
peer->sackdelay = asoc->sackdelay;
+ peer->sackfreq = asoc->sackfreq;
/* Enable/disable heartbeat, SACK delay, and path MTU discovery
* based on association setting.
@@ -650,6 +653,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
SCTP_DEBUG_PRINTK("sctp_assoc_add_peer:association %p PMTU set to "
"%d\n", asoc, asoc->pathmtu);
+ peer->pmtu_pending = 0;
asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu);
diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index 80e6df06967..f62bc246893 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -348,6 +348,43 @@ int sctp_bind_addr_match(struct sctp_bind_addr *bp,
return match;
}
+/* Does the address 'addr' conflict with any addresses in
+ * the bp.
+ */
+int sctp_bind_addr_conflict(struct sctp_bind_addr *bp,
+ const union sctp_addr *addr,
+ struct sctp_sock *bp_sp,
+ struct sctp_sock *addr_sp)
+{
+ struct sctp_sockaddr_entry *laddr;
+ int conflict = 0;
+ struct sctp_sock *sp;
+
+ /* Pick the IPv6 socket as the basis of comparison
+ * since it's usually a superset of the IPv4.
+ * If there is no IPv6 socket, then default to bind_addr.
+ */
+ if (sctp_opt2sk(bp_sp)->sk_family == AF_INET6)
+ sp = bp_sp;
+ else if (sctp_opt2sk(addr_sp)->sk_family == AF_INET6)
+ sp = addr_sp;
+ else
+ sp = bp_sp;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(laddr, &bp->address_list, list) {
+ if (!laddr->valid)
+ continue;
+
+ conflict = sp->pf->cmp_addr(&laddr->a, addr, sp);
+ if (conflict)
+ break;
+ }
+ rcu_read_unlock();
+
+ return conflict;
+}
+
/* Get the state of the entry in the bind_addr_list */
int sctp_bind_addr_state(const struct sctp_bind_addr *bp,
const union sctp_addr *addr)
diff --git a/net/sctp/input.c b/net/sctp/input.c
index ca6b022b1df..a49fa80b57b 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -61,6 +61,7 @@
#include <net/sctp/sctp.h>
#include <net/sctp/sm.h>
#include <net/sctp/checksum.h>
+#include <net/net_namespace.h>
/* Forward declarations for internal helpers. */
static int sctp_rcv_ootb(struct sk_buff *);
@@ -82,8 +83,8 @@ static inline int sctp_rcv_checksum(struct sk_buff *skb)
{
struct sk_buff *list = skb_shinfo(skb)->frag_list;
struct sctphdr *sh = sctp_hdr(skb);
- __u32 cmp = ntohl(sh->checksum);
- __u32 val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
+ __be32 cmp = sh->checksum;
+ __be32 val = sctp_start_cksum((__u8 *)sh, skb_headlen(skb));
for (; list; list = list->next)
val = sctp_update_cksum((__u8 *)list->data, skb_headlen(list),
@@ -430,6 +431,9 @@ struct sock *sctp_err_lookup(int family, struct sk_buff *skb,
struct sock *sk = NULL;
struct sctp_association *asoc;
struct sctp_transport *transport = NULL;
+ struct sctp_init_chunk *chunkhdr;
+ __u32 vtag = ntohl(sctphdr->vtag);
+ int len = skb->len - ((void *)sctphdr - (void *)skb->data);
*app = NULL; *tpp = NULL;
@@ -451,8 +455,28 @@ struct sock *sctp_err_lookup(int family, struct sk_buff *skb,
sk = asoc->base.sk;
- if (ntohl(sctphdr->vtag) != asoc->c.peer_vtag) {
- ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
+ /* RFC 4960, Appendix C. ICMP Handling
+ *
+ * ICMP6) An implementation MUST validate that the Verification Tag
+ * contained in the ICMP message matches the Verification Tag of
+ * the peer. If the Verification Tag is not 0 and does NOT
+ * match, discard the ICMP message. If it is 0 and the ICMP
+ * message contains enough bytes to verify that the chunk type is
+ * an INIT chunk and that the Initiate Tag matches the tag of the
+ * peer, continue with ICMP7. If the ICMP message is too short
+ * or the chunk type or the Initiate Tag does not match, silently
+ * discard the packet.
+ */
+ if (vtag == 0) {
+ chunkhdr = (struct sctp_init_chunk *)((void *)sctphdr
+ + sizeof(struct sctphdr));
+ if (len < sizeof(struct sctphdr) + sizeof(sctp_chunkhdr_t)
+ + sizeof(__be32) ||
+ chunkhdr->chunk_hdr.type != SCTP_CID_INIT ||
+ ntohl(chunkhdr->init_hdr.init_tag) != asoc->c.my_vtag) {
+ goto out;
+ }
+ } else if (vtag != asoc->c.peer_vtag) {
goto out;
}
@@ -462,7 +486,7 @@ struct sock *sctp_err_lookup(int family, struct sk_buff *skb,
* servers this needs to be solved differently.
*/
if (sock_owned_by_user(sk))
- NET_INC_STATS_BH(LINUX_MIB_LOCKDROPPEDICMPS);
+ NET_INC_STATS_BH(&init_net, LINUX_MIB_LOCKDROPPEDICMPS);
*app = asoc;
*tpp = transport;
@@ -511,7 +535,7 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
int err;
if (skb->len < ihlen + 8) {
- ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
+ ICMP_INC_STATS_BH(&init_net, ICMP_MIB_INERRORS);
return;
}
@@ -525,7 +549,7 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
skb->network_header = saveip;
skb->transport_header = savesctp;
if (!sk) {
- ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
+ ICMP_INC_STATS_BH(&init_net, ICMP_MIB_INERRORS);
return;
}
/* Warning: The sock lock is held. Remember to call
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index a2f4d4d5159..a238d6834b3 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -818,7 +818,7 @@ static int sctp_inet6_af_supported(sa_family_t family, struct sctp_sock *sp)
return 1;
/* v4-mapped-v6 addresses */
case AF_INET:
- if (!__ipv6_only_sock(sctp_opt2sk(sp)) && sp->v4mapped)
+ if (!__ipv6_only_sock(sctp_opt2sk(sp)))
return 1;
default:
return 0;
@@ -840,6 +840,11 @@ static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
if (!af1 || !af2)
return 0;
+
+ /* If the socket is IPv6 only, v4 addrs will not match */
+ if (__ipv6_only_sock(sctp_opt2sk(opt)) && af1 != af2)
+ return 0;
+
/* Today, wildcard AF_INET/AF_INET6. */
if (sctp_is_any(addr1) || sctp_is_any(addr2))
return 1;
@@ -876,7 +881,11 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
return 0;
}
dev_put(dev);
+ } else if (type == IPV6_ADDR_MAPPED) {
+ if (!opt->v4mapped)
+ return 0;
}
+
af = opt->pf->af;
}
return af->available(addr, opt);
@@ -919,9 +928,12 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
__be16 *types)
{
- types[0] = SCTP_PARAM_IPV4_ADDRESS;
- types[1] = SCTP_PARAM_IPV6_ADDRESS;
- return 2;
+ types[0] = SCTP_PARAM_IPV6_ADDRESS;
+ if (!opt || !ipv6_only_sock(sctp_opt2sk(opt))) {
+ types[1] = SCTP_PARAM_IPV4_ADDRESS;
+ return 2;
+ }
+ return 1;
}
static const struct proto_ops inet6_seqpacket_ops = {
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 6d45bae93b4..45684646b1d 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -50,6 +50,7 @@
#include <linux/init.h>
#include <net/inet_ecn.h>
#include <net/icmp.h>
+#include <net/net_namespace.h>
#ifndef TEST_FRAME
#include <net/tcp.h>
@@ -157,7 +158,8 @@ void sctp_packet_free(struct sctp_packet *packet)
* packet can be sent only after receiving the COOKIE_ACK.
*/
sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *packet,
- struct sctp_chunk *chunk)
+ struct sctp_chunk *chunk,
+ int one_packet)
{
sctp_xmit_t retval;
int error = 0;
@@ -175,7 +177,9 @@ sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *packet,
/* If we have an empty packet, then we can NOT ever
* return PMTU_FULL.
*/
- retval = sctp_packet_append_chunk(packet, chunk);
+ if (!one_packet)
+ retval = sctp_packet_append_chunk(packet,
+ chunk);
}
break;
@@ -361,7 +365,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
struct sctp_transport *tp = packet->transport;
struct sctp_association *asoc = tp->asoc;
struct sctphdr *sh;
- __u32 crc32 = 0;
+ __be32 crc32 = __constant_cpu_to_be32(0);
struct sk_buff *nskb;
struct sctp_chunk *chunk, *tmp;
struct sock *sk;
@@ -534,7 +538,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
/* 3) Put the resultant value into the checksum field in the
* common header, and leave the rest of the bits unchanged.
*/
- sh->checksum = htonl(crc32);
+ sh->checksum = crc32;
/* IP layer ECN support
* From RFC 2481
@@ -592,7 +596,7 @@ out:
return err;
no_route:
kfree_skb(nskb);
- IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS_BH(&init_net, IPSTATS_MIB_OUTNOROUTES);
/* FIXME: Returning the 'err' will effect all the associations
* associated with a socket, although only one of the paths of the
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index ace6770e904..70ead8dc348 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -702,6 +702,7 @@ int sctp_outq_uncork(struct sctp_outq *q)
return error;
}
+
/*
* Try to flush an outqueue.
*
@@ -725,6 +726,7 @@ int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
sctp_xmit_t status;
int error = 0;
int start_timer = 0;
+ int one_packet = 0;
/* These transports have chunks to send. */
struct list_head transport_list;
@@ -830,20 +832,33 @@ int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
if (sctp_test_T_bit(chunk)) {
packet->vtag = asoc->c.my_vtag;
}
- case SCTP_CID_SACK:
- case SCTP_CID_HEARTBEAT:
+ /* The following chunks are "response" chunks, i.e.
+ * they are generated in response to something we
+ * received. If we are sending these, then we can
+ * send only 1 packet containing these chunks.
+ */
case SCTP_CID_HEARTBEAT_ACK:
- case SCTP_CID_SHUTDOWN:
case SCTP_CID_SHUTDOWN_ACK:
- case SCTP_CID_ERROR:
- case SCTP_CID_COOKIE_ECHO:
case SCTP_CID_COOKIE_ACK:
- case SCTP_CID_ECN_ECNE:
+ case SCTP_CID_COOKIE_ECHO:
+ case SCTP_CID_ERROR:
case SCTP_CID_ECN_CWR:
- case SCTP_CID_ASCONF:
case SCTP_CID_ASCONF_ACK:
+ one_packet = 1;
+ /* Fall throught */
+
+ case SCTP_CID_SACK:
+ case SCTP_CID_HEARTBEAT:
+ case SCTP_CID_SHUTDOWN:
+ case SCTP_CID_ECN_ECNE:
+ case SCTP_CID_ASCONF:
case SCTP_CID_FWD_TSN:
- sctp_packet_transmit_chunk(packet, chunk);
+ status = sctp_packet_transmit_chunk(packet, chunk,
+ one_packet);
+ if (status != SCTP_XMIT_OK) {
+ /* put the chunk back */
+ list_add(&chunk->list, &q->control_chunk_list);
+ }
break;
default:
@@ -974,7 +989,7 @@ int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
atomic_read(&chunk->skb->users) : -1);
/* Add the chunk to the packet. */
- status = sctp_packet_transmit_chunk(packet, chunk);
+ status = sctp_packet_transmit_chunk(packet, chunk, 0);
switch (status) {
case SCTP_XMIT_PMTU_FULL:
@@ -1239,7 +1254,6 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_sackhdr *sack)
* Make sure the empty queue handler will get run later.
*/
q->empty = (list_empty(&q->out_chunk_list) &&
- list_empty(&q->control_chunk_list) &&
list_empty(&q->retransmit));
if (!q->empty)
goto finish;
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 0aba759cb9b..5dd89831ece 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -383,3 +383,144 @@ void sctp_assocs_proc_exit(void)
{
remove_proc_entry("assocs", proc_net_sctp);
}
+
+static void *sctp_remaddr_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ if (*pos >= sctp_assoc_hashsize)
+ return NULL;
+
+ if (*pos < 0)
+ *pos = 0;
+
+ if (*pos == 0)
+ seq_printf(seq, "ADDR ASSOC_ID HB_ACT RTO MAX_PATH_RTX "
+ "REM_ADDR_RTX START\n");
+
+ return (void *)pos;
+}
+
+static void *sctp_remaddr_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ if (++*pos >= sctp_assoc_hashsize)
+ return NULL;
+
+ return pos;
+}
+
+static void sctp_remaddr_seq_stop(struct seq_file *seq, void *v)
+{
+ return;
+}
+
+static int sctp_remaddr_seq_show(struct seq_file *seq, void *v)
+{
+ struct sctp_hashbucket *head;
+ struct sctp_ep_common *epb;
+ struct sctp_association *assoc;
+ struct hlist_node *node;
+ struct sctp_transport *tsp;
+ int hash = *(loff_t *)v;
+
+ if (hash >= sctp_assoc_hashsize)
+ return -ENOMEM;
+
+ head = &sctp_assoc_hashtable[hash];
+ sctp_local_bh_disable();
+ read_lock(&head->lock);
+ sctp_for_each_hentry(epb, node, &head->chain) {
+ assoc = sctp_assoc(epb);
+ list_for_each_entry(tsp, &assoc->peer.transport_addr_list,
+ transports) {
+ /*
+ * The remote address (ADDR)
+ */
+ tsp->af_specific->seq_dump_addr(seq, &tsp->ipaddr);
+ seq_printf(seq, " ");
+
+ /*
+ * The association ID (ASSOC_ID)
+ */
+ seq_printf(seq, "%d ", tsp->asoc->assoc_id);
+
+ /*
+ * If the Heartbeat is active (HB_ACT)
+ * Note: 1 = Active, 0 = Inactive
+ */
+ seq_printf(seq, "%d ", timer_pending(&tsp->hb_timer));
+
+ /*
+ * Retransmit time out (RTO)
+ */
+ seq_printf(seq, "%lu ", tsp->rto);
+
+ /*
+ * Maximum path retransmit count (PATH_MAX_RTX)
+ */
+ seq_printf(seq, "%d ", tsp->pathmaxrxt);
+
+ /*
+ * remote address retransmit count (REM_ADDR_RTX)
+ * Note: We don't have a way to tally this at the moment
+ * so lets just leave it as zero for the moment
+ */
+ seq_printf(seq, "0 ");
+
+ /*
+ * remote address start time (START). This is also not
+ * currently implemented, but we can record it with a
+ * jiffies marker in a subsequent patch
+ */
+ seq_printf(seq, "0");
+
+ seq_printf(seq, "\n");
+ }
+ }
+
+ read_unlock(&head->lock);
+ sctp_local_bh_enable();
+
+ return 0;
+
+}
+
+static const struct seq_operations sctp_remaddr_ops = {
+ .start = sctp_remaddr_seq_start,
+ .next = sctp_remaddr_seq_next,
+ .stop = sctp_remaddr_seq_stop,
+ .show = sctp_remaddr_seq_show,
+};
+
+/* Cleanup the proc fs entry for 'remaddr' object. */
+void sctp_remaddr_proc_exit(void)
+{
+ remove_proc_entry("remaddr", proc_net_sctp);
+}
+
+static int sctp_remaddr_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &sctp_remaddr_ops);
+}
+
+static const struct file_operations sctp_remaddr_seq_fops = {
+ .open = sctp_remaddr_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+int __init sctp_remaddr_proc_init(void)
+{
+ struct proc_dir_entry *p;
+
+ p = create_proc_entry("remaddr", S_IRUGO, proc_net_sctp);
+ if (!p)
+ return -ENOMEM;
+ p->proc_fops = &sctp_remaddr_seq_fops;
+
+ return 0;
+}
+
+void sctp_assoc_proc_exit(void)
+{
+ remove_proc_entry("remaddr", proc_net_sctp);
+}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 9258dfe784a..a6e0818bcff 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -52,6 +52,8 @@
#include <linux/inetdevice.h>
#include <linux/seq_file.h>
#include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/ip.h>
@@ -64,9 +66,12 @@
/* Global data structures. */
struct sctp_globals sctp_globals __read_mostly;
-struct proc_dir_entry *proc_net_sctp;
DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly;
+#ifdef CONFIG_PROC_FS
+struct proc_dir_entry *proc_net_sctp;
+#endif
+
struct idr sctp_assocs_id;
DEFINE_SPINLOCK(sctp_assocs_id_lock);
@@ -97,6 +102,7 @@ struct sock *sctp_get_ctl_sock(void)
/* Set up the proc fs entry for the SCTP protocol. */
static __init int sctp_proc_init(void)
{
+#ifdef CONFIG_PROC_FS
if (!proc_net_sctp) {
struct proc_dir_entry *ent;
ent = proc_mkdir("sctp", init_net.proc_net);
@@ -113,9 +119,13 @@ static __init int sctp_proc_init(void)
goto out_eps_proc_init;
if (sctp_assocs_proc_init())
goto out_assocs_proc_init;
+ if (sctp_remaddr_proc_init())
+ goto out_remaddr_proc_init;
return 0;
+out_remaddr_proc_init:
+ sctp_assocs_proc_exit();
out_assocs_proc_init:
sctp_eps_proc_exit();
out_eps_proc_init:
@@ -127,6 +137,9 @@ out_snmp_proc_init:
}
out_nomem:
return -ENOMEM;
+#else
+ return 0;
+#endif /* CONFIG_PROC_FS */
}
/* Clean up the proc fs entry for the SCTP protocol.
@@ -135,14 +148,17 @@ out_nomem:
*/
static void sctp_proc_exit(void)
{
+#ifdef CONFIG_PROC_FS
sctp_snmp_proc_exit();
sctp_eps_proc_exit();
sctp_assocs_proc_exit();
+ sctp_remaddr_proc_exit();
if (proc_net_sctp) {
proc_net_sctp = NULL;
remove_proc_entry("sctp", init_net.proc_net);
}
+#endif
}
/* Private helper to extract ipv4 address and stash them in
@@ -367,6 +383,10 @@ static int sctp_v4_addr_valid(union sctp_addr *addr,
struct sctp_sock *sp,
const struct sk_buff *skb)
{
+ /* IPv4 addresses not allowed */
+ if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
/* Is this a non-unicast address or a unusable SCTP address? */
if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr))
return 0;
@@ -390,6 +410,9 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
!sysctl_ip_nonlocal_bind)
return 0;
+ if (ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
return 1;
}
@@ -645,7 +668,7 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
struct sctp_sockaddr_entry *temp;
int found = 0;
- if (dev_net(ifa->ifa_dev->dev) != &init_net)
+ if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net))
return NOTIFY_DONE;
switch (ev) {
@@ -1059,6 +1082,7 @@ SCTP_STATIC __init int sctp_init(void)
int status = -EINVAL;
unsigned long goal;
unsigned long limit;
+ unsigned long nr_pages;
int max_share;
int order;
@@ -1154,8 +1178,9 @@ SCTP_STATIC __init int sctp_init(void)
* Note this initalizes the data in sctpv6_prot too
* Unabashedly stolen from tcp_init
*/
- limit = min(num_physpages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
- limit = (limit * (num_physpages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+ nr_pages = totalram_pages - totalhigh_pages;
+ limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
+ limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
limit = max(limit, 128UL);
sysctl_sctp_mem[0] = limit / 4 * 3;
sysctl_sctp_mem[1] = limit;
@@ -1165,7 +1190,7 @@ SCTP_STATIC __init int sctp_init(void)
limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7);
max_share = min(4UL*1024*1024, limit);
- sysctl_sctp_rmem[0] = PAGE_SIZE; /* give each asoc 1 page min */
+ sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */
sysctl_sctp_rmem[1] = (1500 *(sizeof(struct sk_buff) + 1));
sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index bbc7107c86c..e8ca4e54981 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2364,8 +2364,13 @@ static int sctp_process_param(struct sctp_association *asoc,
case SCTP_PARAM_IPV6_ADDRESS:
if (PF_INET6 != asoc->base.sk->sk_family)
break;
- /* Fall through. */
+ goto do_addr_param;
+
case SCTP_PARAM_IPV4_ADDRESS:
+ /* v4 addresses are not allowed on v6-only socket */
+ if (ipv6_only_sock(asoc->base.sk))
+ break;
+do_addr_param:
af = sctp_get_af_specific(param_type2af(param.p->type));
af->from_addr_param(&addr, param.addr, htons(asoc->peer.port), 0);
scope = sctp_scope(peer_addr);
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 23a9f1a95b7..9732c797e8e 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -190,20 +190,28 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
* unacknowledged DATA chunk. ...
*/
if (!asoc->peer.sack_needed) {
- /* We will need a SACK for the next packet. */
- asoc->peer.sack_needed = 1;
+ asoc->peer.sack_cnt++;
/* Set the SACK delay timeout based on the
* SACK delay for the last transport
* data was received from, or the default
* for the association.
*/
- if (trans)
+ if (trans) {
+ /* We will need a SACK for the next packet. */
+ if (asoc->peer.sack_cnt >= trans->sackfreq - 1)
+ asoc->peer.sack_needed = 1;
+
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
trans->sackdelay;
- else
+ } else {
+ /* We will need a SACK for the next packet. */
+ if (asoc->peer.sack_cnt >= asoc->sackfreq - 1)
+ asoc->peer.sack_needed = 1;
+
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
asoc->sackdelay;
+ }
/* Restart the SACK timer. */
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
@@ -216,6 +224,7 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
goto nomem;
asoc->peer.sack_needed = 0;
+ asoc->peer.sack_cnt = 0;
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(sack));
@@ -655,7 +664,7 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *cmds,
struct sctp_association *asoc,
struct sctp_sackhdr *sackh)
{
- int err;
+ int err = 0;
if (sctp_outq_sack(&asoc->outqueue, sackh)) {
/* There are no more TSNs awaiting SACK. */
@@ -663,11 +672,6 @@ static int sctp_cmd_process_sack(sctp_cmd_seq_t *cmds,
SCTP_ST_OTHER(SCTP_EVENT_NO_PENDING_TSN),
asoc->state, asoc->ep, asoc, NULL,
GFP_ATOMIC);
- } else {
- /* Windows may have opened, so we need
- * to check if we have DATA to transmit
- */
- err = sctp_outq_flush(&asoc->outqueue, 0);
}
return err;
@@ -1472,8 +1476,15 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
break;
case SCTP_CMD_DISCARD_PACKET:
- /* We need to discard the whole packet. */
+ /* We need to discard the whole packet.
+ * Uncork the queue since there might be
+ * responses pending
+ */
chunk->pdiscard = 1;
+ if (asoc) {
+ sctp_outq_uncork(&asoc->outqueue);
+ local_cork = 0;
+ }
break;
case SCTP_CMD_RTO_PENDING:
@@ -1544,8 +1555,15 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
}
out:
- if (local_cork)
- sctp_outq_uncork(&asoc->outqueue);
+ /* If this is in response to a received chunk, wait until
+ * we are done with the packet to open the queue so that we don't
+ * send multiple packets in response to a single request.
+ */
+ if (asoc && SCTP_EVENT_T_CHUNK == event_type && chunk) {
+ if (chunk->end_of_packet || chunk->singleton)
+ sctp_outq_uncork(&asoc->outqueue);
+ } else if (local_cork)
+ sctp_outq_uncork(&asoc->outqueue);
return error;
nomem:
error = -ENOMEM;
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index fcdb45d1071..8848d329aa2 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -795,8 +795,6 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_START,
SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE));
- sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
-
/* This will send the COOKIE ACK */
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
@@ -883,7 +881,6 @@ sctp_disposition_t sctp_sf_do_5_1E_ca(const struct sctp_endpoint *ep,
if (asoc->autoclose)
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_START,
SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE));
- sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
/* It may also notify its ULP about the successful
* establishment of the association with a Communication Up
@@ -1781,7 +1778,6 @@ static sctp_disposition_t sctp_sf_do_dupcook_b(const struct sctp_endpoint *ep,
goto nomem;
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
- sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
/* RFC 2960 5.1 Normal Establishment of an Association
*
@@ -1898,12 +1894,13 @@ static sctp_disposition_t sctp_sf_do_dupcook_d(const struct sctp_endpoint *ep,
}
}
- sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
repl = sctp_make_cookie_ack(new_asoc, chunk);
if (!repl)
goto nomem;
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
+
if (ev)
sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
SCTP_ULPEVENT(ev));
@@ -1911,9 +1908,6 @@ static sctp_disposition_t sctp_sf_do_dupcook_d(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
SCTP_ULPEVENT(ai_ev));
- sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
- sctp_add_cmd_sf(commands, SCTP_CMD_TRANSMIT, SCTP_NULL());
-
return SCTP_DISPOSITION_CONSUME;
nomem:
@@ -3970,9 +3964,6 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
break;
case SCTP_CID_ACTION_DISCARD_ERR:
- /* Discard the packet. */
- sctp_sf_pdiscard(ep, asoc, type, arg, commands);
-
/* Generate an ERROR chunk as response. */
hdr = unk_chunk->chunk_hdr;
err_chunk = sctp_make_op_error(asoc, unk_chunk,
@@ -3982,6 +3973,9 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err_chunk));
}
+
+ /* Discard the packet. */
+ sctp_sf_pdiscard(ep, asoc, type, arg, commands);
return SCTP_DISPOSITION_CONSUME;
break;
case SCTP_CID_ACTION_SKIP:
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 0dbcde6758e..79bece16aed 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -116,7 +116,7 @@ static int sctp_memory_pressure;
static atomic_t sctp_memory_allocated;
static atomic_t sctp_sockets_allocated;
-static void sctp_enter_memory_pressure(void)
+static void sctp_enter_memory_pressure(struct sock *sk)
{
sctp_memory_pressure = 1;
}
@@ -308,9 +308,16 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
if (len < sizeof (struct sockaddr))
return NULL;
- /* Does this PF support this AF? */
- if (!opt->pf->af_supported(addr->sa.sa_family, opt))
- return NULL;
+ /* V4 mapped address are really of AF_INET family */
+ if (addr->sa.sa_family == AF_INET6 &&
+ ipv6_addr_v4mapped(&addr->v6.sin6_addr)) {
+ if (!opt->pf->af_supported(AF_INET, opt))
+ return NULL;
+ } else {
+ /* Does this PF support this AF? */
+ if (!opt->pf->af_supported(addr->sa.sa_family, opt))
+ return NULL;
+ }
/* If we get this far, af is valid. */
af = sctp_get_af_specific(addr->sa.sa_family);
@@ -370,18 +377,19 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
return -EACCES;
+ /* See if the address matches any of the addresses we may have
+ * already bound before checking against other endpoints.
+ */
+ if (sctp_bind_addr_match(bp, addr, sp))
+ return -EINVAL;
+
/* Make sure we are allowed to bind here.
* The function sctp_get_port_local() does duplicate address
* detection.
*/
addr->v4.sin_port = htons(snum);
if ((ret = sctp_get_port_local(sk, addr))) {
- if (ret == (long) sk) {
- /* This endpoint has a conflicting address. */
- return -EINVAL;
- } else {
- return -EADDRINUSE;
- }
+ return -EADDRINUSE;
}
/* Refresh ephemeral port. */
@@ -956,7 +964,8 @@ out:
*/
static int __sctp_connect(struct sock* sk,
struct sockaddr *kaddrs,
- int addrs_size)
+ int addrs_size,
+ sctp_assoc_t *assoc_id)
{
struct sctp_sock *sp;
struct sctp_endpoint *ep;
@@ -1111,6 +1120,8 @@ static int __sctp_connect(struct sock* sk,
timeo = sock_sndtimeo(sk, f_flags & O_NONBLOCK);
err = sctp_wait_for_connect(asoc, &timeo);
+ if (!err && assoc_id)
+ *assoc_id = asoc->assoc_id;
/* Don't free association on exit. */
asoc = NULL;
@@ -1128,7 +1139,8 @@ out_free:
/* Helper for tunneling sctp_connectx() requests through sctp_setsockopt()
*
* API 8.9
- * int sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt);
+ * int sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt,
+ * sctp_assoc_t *asoc);
*
* If sd is an IPv4 socket, the addresses passed must be IPv4 addresses.
* If the sd is an IPv6 socket, the addresses passed can either be IPv4
@@ -1144,8 +1156,10 @@ out_free:
* representation is termed a "packed array" of addresses). The caller
* specifies the number of addresses in the array with addrcnt.
*
- * On success, sctp_connectx() returns 0. On failure, sctp_connectx() returns
- * -1, and sets errno to the appropriate error code.
+ * On success, sctp_connectx() returns 0. It also sets the assoc_id to
+ * the association id of the new association. On failure, sctp_connectx()
+ * returns -1, and sets errno to the appropriate error code. The assoc_id
+ * is not touched by the kernel.
*
* For SCTP, the port given in each socket address must be the same, or
* sctp_connectx() will fail, setting errno to EINVAL.
@@ -1182,11 +1196,12 @@ out_free:
* addrs The pointer to the addresses in user land
* addrssize Size of the addrs buffer
*
- * Returns 0 if ok, <0 errno code on error.
+ * Returns >=0 if ok, <0 errno code on error.
*/
-SCTP_STATIC int sctp_setsockopt_connectx(struct sock* sk,
+SCTP_STATIC int __sctp_setsockopt_connectx(struct sock* sk,
struct sockaddr __user *addrs,
- int addrs_size)
+ int addrs_size,
+ sctp_assoc_t *assoc_id)
{
int err = 0;
struct sockaddr *kaddrs;
@@ -1209,13 +1224,46 @@ SCTP_STATIC int sctp_setsockopt_connectx(struct sock* sk,
if (__copy_from_user(kaddrs, addrs, addrs_size)) {
err = -EFAULT;
} else {
- err = __sctp_connect(sk, kaddrs, addrs_size);
+ err = __sctp_connect(sk, kaddrs, addrs_size, assoc_id);
}
kfree(kaddrs);
+
return err;
}
+/*
+ * This is an older interface. It's kept for backward compatibility
+ * to the option that doesn't provide association id.
+ */
+SCTP_STATIC int sctp_setsockopt_connectx_old(struct sock* sk,
+ struct sockaddr __user *addrs,
+ int addrs_size)
+{
+ return __sctp_setsockopt_connectx(sk, addrs, addrs_size, NULL);
+}
+
+/*
+ * New interface for the API. The since the API is done with a socket
+ * option, to make it simple we feed back the association id is as a return
+ * indication to the call. Error is always negative and association id is
+ * always positive.
+ */
+SCTP_STATIC int sctp_setsockopt_connectx(struct sock* sk,
+ struct sockaddr __user *addrs,
+ int addrs_size)
+{
+ sctp_assoc_t assoc_id = 0;
+ int err = 0;
+
+ err = __sctp_setsockopt_connectx(sk, addrs, addrs_size, &assoc_id);
+
+ if (err)
+ return err;
+ else
+ return assoc_id;
+}
+
/* API 3.1.4 close() - UDP Style Syntax
* Applications use close() to perform graceful shutdown (as described in
* Section 10.1 of [SCTP]) on ALL the associations currently represented
@@ -2305,74 +2353,98 @@ static int sctp_setsockopt_peer_addr_params(struct sock *sk,
return 0;
}
-/* 7.1.23. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
- *
- * This options will get or set the delayed ack timer. The time is set
- * in milliseconds. If the assoc_id is 0, then this sets or gets the
- * endpoints default delayed ack timer value. If the assoc_id field is
- * non-zero, then the set or get effects the specified association.
- *
- * struct sctp_assoc_value {
- * sctp_assoc_t assoc_id;
- * uint32_t assoc_value;
- * };
+/*
+ * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
+ *
+ * This option will effect the way delayed acks are performed. This
+ * option allows you to get or set the delayed ack time, in
+ * milliseconds. It also allows changing the delayed ack frequency.
+ * Changing the frequency to 1 disables the delayed sack algorithm. If
+ * the assoc_id is 0, then this sets or gets the endpoints default
+ * values. If the assoc_id field is non-zero, then the set or get
+ * effects the specified association for the one to many model (the
+ * assoc_id field is ignored by the one to one model). Note that if
+ * sack_delay or sack_freq are 0 when setting this option, then the
+ * current values will remain unchanged.
+ *
+ * struct sctp_sack_info {
+ * sctp_assoc_t sack_assoc_id;
+ * uint32_t sack_delay;
+ * uint32_t sack_freq;
+ * };
*
- * assoc_id - This parameter, indicates which association the
- * user is preforming an action upon. Note that if
- * this field's value is zero then the endpoints
- * default value is changed (effecting future
- * associations only).
+ * sack_assoc_id - This parameter, indicates which association the user
+ * is performing an action upon. Note that if this field's value is
+ * zero then the endpoints default value is changed (effecting future
+ * associations only).
*
- * assoc_value - This parameter contains the number of milliseconds
- * that the user is requesting the delayed ACK timer
- * be set to. Note that this value is defined in
- * the standard to be between 200 and 500 milliseconds.
+ * sack_delay - This parameter contains the number of milliseconds that
+ * the user is requesting the delayed ACK timer be set to. Note that
+ * this value is defined in the standard to be between 200 and 500
+ * milliseconds.
*
- * Note: a value of zero will leave the value alone,
- * but disable SACK delay. A non-zero value will also
- * enable SACK delay.
+ * sack_freq - This parameter contains the number of packets that must
+ * be received before a sack is sent without waiting for the delay
+ * timer to expire. The default value for this is 2, setting this
+ * value to 1 will disable the delayed sack algorithm.
*/
-static int sctp_setsockopt_delayed_ack_time(struct sock *sk,
+static int sctp_setsockopt_delayed_ack(struct sock *sk,
char __user *optval, int optlen)
{
- struct sctp_assoc_value params;
+ struct sctp_sack_info params;
struct sctp_transport *trans = NULL;
struct sctp_association *asoc = NULL;
struct sctp_sock *sp = sctp_sk(sk);
- if (optlen != sizeof(struct sctp_assoc_value))
- return - EINVAL;
+ if (optlen == sizeof(struct sctp_sack_info)) {
+ if (copy_from_user(&params, optval, optlen))
+ return -EFAULT;
- if (copy_from_user(&params, optval, optlen))
- return -EFAULT;
+ if (params.sack_delay == 0 && params.sack_freq == 0)
+ return 0;
+ } else if (optlen == sizeof(struct sctp_assoc_value)) {
+ printk(KERN_WARNING "SCTP: Use of struct sctp_sack_info "
+ "in delayed_ack socket option deprecated\n");
+ printk(KERN_WARNING "SCTP: struct sctp_sack_info instead\n");
+ if (copy_from_user(&params, optval, optlen))
+ return -EFAULT;
+
+ if (params.sack_delay == 0)
+ params.sack_freq = 1;
+ else
+ params.sack_freq = 0;
+ } else
+ return - EINVAL;
/* Validate value parameter. */
- if (params.assoc_value > 500)
+ if (params.sack_delay > 500)
return -EINVAL;
- /* Get association, if assoc_id != 0 and the socket is a one
+ /* Get association, if sack_assoc_id != 0 and the socket is a one
* to many style socket, and an association was not found, then
* the id was invalid.
*/
- asoc = sctp_id2assoc(sk, params.assoc_id);
- if (!asoc && params.assoc_id && sctp_style(sk, UDP))
+ asoc = sctp_id2assoc(sk, params.sack_assoc_id);
+ if (!asoc && params.sack_assoc_id && sctp_style(sk, UDP))
return -EINVAL;
- if (params.assoc_value) {
+ if (params.sack_delay) {
if (asoc) {
asoc->sackdelay =
- msecs_to_jiffies(params.assoc_value);
+ msecs_to_jiffies(params.sack_delay);
asoc->param_flags =
(asoc->param_flags & ~SPP_SACKDELAY) |
SPP_SACKDELAY_ENABLE;
} else {
- sp->sackdelay = params.assoc_value;
+ sp->sackdelay = params.sack_delay;
sp->param_flags =
(sp->param_flags & ~SPP_SACKDELAY) |
SPP_SACKDELAY_ENABLE;
}
- } else {
+ }
+
+ if (params.sack_freq == 1) {
if (asoc) {
asoc->param_flags =
(asoc->param_flags & ~SPP_SACKDELAY) |
@@ -2382,22 +2454,40 @@ static int sctp_setsockopt_delayed_ack_time(struct sock *sk,
(sp->param_flags & ~SPP_SACKDELAY) |
SPP_SACKDELAY_DISABLE;
}
+ } else if (params.sack_freq > 1) {
+ if (asoc) {
+ asoc->sackfreq = params.sack_freq;
+ asoc->param_flags =
+ (asoc->param_flags & ~SPP_SACKDELAY) |
+ SPP_SACKDELAY_ENABLE;
+ } else {
+ sp->sackfreq = params.sack_freq;
+ sp->param_flags =
+ (sp->param_flags & ~SPP_SACKDELAY) |
+ SPP_SACKDELAY_ENABLE;
+ }
}
/* If change is for association, also apply to each transport. */
if (asoc) {
list_for_each_entry(trans, &asoc->peer.transport_addr_list,
transports) {
- if (params.assoc_value) {
+ if (params.sack_delay) {
trans->sackdelay =
- msecs_to_jiffies(params.assoc_value);
+ msecs_to_jiffies(params.sack_delay);
trans->param_flags =
(trans->param_flags & ~SPP_SACKDELAY) |
SPP_SACKDELAY_ENABLE;
- } else {
+ }
+ if (params.sack_freq == 1) {
trans->param_flags =
(trans->param_flags & ~SPP_SACKDELAY) |
SPP_SACKDELAY_DISABLE;
+ } else if (params.sack_freq > 1) {
+ trans->sackfreq = params.sack_freq;
+ trans->param_flags =
+ (trans->param_flags & ~SPP_SACKDELAY) |
+ SPP_SACKDELAY_ENABLE;
}
}
}
@@ -3164,10 +3254,18 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
optlen, SCTP_BINDX_REM_ADDR);
break;
+ case SCTP_SOCKOPT_CONNECTX_OLD:
+ /* 'optlen' is the size of the addresses buffer. */
+ retval = sctp_setsockopt_connectx_old(sk,
+ (struct sockaddr __user *)optval,
+ optlen);
+ break;
+
case SCTP_SOCKOPT_CONNECTX:
/* 'optlen' is the size of the addresses buffer. */
- retval = sctp_setsockopt_connectx(sk, (struct sockaddr __user *)optval,
- optlen);
+ retval = sctp_setsockopt_connectx(sk,
+ (struct sockaddr __user *)optval,
+ optlen);
break;
case SCTP_DISABLE_FRAGMENTS:
@@ -3186,8 +3284,8 @@ SCTP_STATIC int sctp_setsockopt(struct sock *sk, int level, int optname,
retval = sctp_setsockopt_peer_addr_params(sk, optval, optlen);
break;
- case SCTP_DELAYED_ACK_TIME:
- retval = sctp_setsockopt_delayed_ack_time(sk, optval, optlen);
+ case SCTP_DELAYED_ACK:
+ retval = sctp_setsockopt_delayed_ack(sk, optval, optlen);
break;
case SCTP_PARTIAL_DELIVERY_POINT:
retval = sctp_setsockopt_partial_delivery_point(sk, optval, optlen);
@@ -3294,7 +3392,7 @@ SCTP_STATIC int sctp_connect(struct sock *sk, struct sockaddr *addr,
/* Pass correct addr len to common routine (so it knows there
* is only one address being passed.
*/
- err = __sctp_connect(sk, addr, af->sockaddr_len);
+ err = __sctp_connect(sk, addr, af->sockaddr_len, NULL);
}
sctp_release_sock(sk);
@@ -3446,6 +3544,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
sp->pathmaxrxt = sctp_max_retrans_path;
sp->pathmtu = 0; // allow default discovery
sp->sackdelay = sctp_sack_timeout;
+ sp->sackfreq = 2;
sp->param_flags = SPP_HB_ENABLE |
SPP_PMTUD_ENABLE |
SPP_SACKDELAY_ENABLE;
@@ -3497,7 +3596,7 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
}
/* Cleanup any SCTP per socket resources. */
-SCTP_STATIC int sctp_destroy_sock(struct sock *sk)
+SCTP_STATIC void sctp_destroy_sock(struct sock *sk)
{
struct sctp_endpoint *ep;
@@ -3507,7 +3606,6 @@ SCTP_STATIC int sctp_destroy_sock(struct sock *sk)
ep = sctp_sk(sk)->ep;
sctp_endpoint_free(ep);
atomic_dec(&sctp_sockets_allocated);
- return 0;
}
/* API 4.1.7 shutdown() - TCP Style Syntax
@@ -3999,70 +4097,91 @@ static int sctp_getsockopt_peer_addr_params(struct sock *sk, int len,
return 0;
}
-/* 7.1.23. Delayed Ack Timer (SCTP_DELAYED_ACK_TIME)
- *
- * This options will get or set the delayed ack timer. The time is set
- * in milliseconds. If the assoc_id is 0, then this sets or gets the
- * endpoints default delayed ack timer value. If the assoc_id field is
- * non-zero, then the set or get effects the specified association.
- *
- * struct sctp_assoc_value {
- * sctp_assoc_t assoc_id;
- * uint32_t assoc_value;
- * };
+/*
+ * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
+ *
+ * This option will effect the way delayed acks are performed. This
+ * option allows you to get or set the delayed ack time, in
+ * milliseconds. It also allows changing the delayed ack frequency.
+ * Changing the frequency to 1 disables the delayed sack algorithm. If
+ * the assoc_id is 0, then this sets or gets the endpoints default
+ * values. If the assoc_id field is non-zero, then the set or get
+ * effects the specified association for the one to many model (the
+ * assoc_id field is ignored by the one to one model). Note that if
+ * sack_delay or sack_freq are 0 when setting this option, then the
+ * current values will remain unchanged.
+ *
+ * struct sctp_sack_info {
+ * sctp_assoc_t sack_assoc_id;
+ * uint32_t sack_delay;
+ * uint32_t sack_freq;
+ * };
*
- * assoc_id - This parameter, indicates which association the
- * user is preforming an action upon. Note that if
- * this field's value is zero then the endpoints
- * default value is changed (effecting future
- * associations only).
+ * sack_assoc_id - This parameter, indicates which association the user
+ * is performing an action upon. Note that if this field's value is
+ * zero then the endpoints default value is changed (effecting future
+ * associations only).
*
- * assoc_value - This parameter contains the number of milliseconds
- * that the user is requesting the delayed ACK timer
- * be set to. Note that this value is defined in
- * the standard to be between 200 and 500 milliseconds.
+ * sack_delay - This parameter contains the number of milliseconds that
+ * the user is requesting the delayed ACK timer be set to. Note that
+ * this value is defined in the standard to be between 200 and 500
+ * milliseconds.
*
- * Note: a value of zero will leave the value alone,
- * but disable SACK delay. A non-zero value will also
- * enable SACK delay.
+ * sack_freq - This parameter contains the number of packets that must
+ * be received before a sack is sent without waiting for the delay
+ * timer to expire. The default value for this is 2, setting this
+ * value to 1 will disable the delayed sack algorithm.
*/
-static int sctp_getsockopt_delayed_ack_time(struct sock *sk, int len,
+static int sctp_getsockopt_delayed_ack(struct sock *sk, int len,
char __user *optval,
int __user *optlen)
{
- struct sctp_assoc_value params;
+ struct sctp_sack_info params;
struct sctp_association *asoc = NULL;
struct sctp_sock *sp = sctp_sk(sk);
- if (len < sizeof(struct sctp_assoc_value))
- return - EINVAL;
+ if (len >= sizeof(struct sctp_sack_info)) {
+ len = sizeof(struct sctp_sack_info);
- len = sizeof(struct sctp_assoc_value);
-
- if (copy_from_user(&params, optval, len))
- return -EFAULT;
+ if (copy_from_user(&params, optval, len))
+ return -EFAULT;
+ } else if (len == sizeof(struct sctp_assoc_value)) {
+ printk(KERN_WARNING "SCTP: Use of struct sctp_sack_info "
+ "in delayed_ack socket option deprecated\n");
+ printk(KERN_WARNING "SCTP: struct sctp_sack_info instead\n");
+ if (copy_from_user(&params, optval, len))
+ return -EFAULT;
+ } else
+ return - EINVAL;
- /* Get association, if assoc_id != 0 and the socket is a one
+ /* Get association, if sack_assoc_id != 0 and the socket is a one
* to many style socket, and an association was not found, then
* the id was invalid.
*/
- asoc = sctp_id2assoc(sk, params.assoc_id);
- if (!asoc && params.assoc_id && sctp_style(sk, UDP))
+ asoc = sctp_id2assoc(sk, params.sack_assoc_id);
+ if (!asoc && params.sack_assoc_id && sctp_style(sk, UDP))
return -EINVAL;
if (asoc) {
/* Fetch association values. */
- if (asoc->param_flags & SPP_SACKDELAY_ENABLE)
- params.assoc_value = jiffies_to_msecs(
+ if (asoc->param_flags & SPP_SACKDELAY_ENABLE) {
+ params.sack_delay = jiffies_to_msecs(
asoc->sackdelay);
- else
- params.assoc_value = 0;
+ params.sack_freq = asoc->sackfreq;
+
+ } else {
+ params.sack_delay = 0;
+ params.sack_freq = 1;
+ }
} else {
/* Fetch socket values. */
- if (sp->param_flags & SPP_SACKDELAY_ENABLE)
- params.assoc_value = sp->sackdelay;
- else
- params.assoc_value = 0;
+ if (sp->param_flags & SPP_SACKDELAY_ENABLE) {
+ params.sack_delay = sp->sackdelay;
+ params.sack_freq = sp->sackfreq;
+ } else {
+ params.sack_delay = 0;
+ params.sack_freq = 1;
+ }
}
if (copy_to_user(optval, &params, len))
@@ -4112,6 +4231,8 @@ static int sctp_getsockopt_peer_addrs_num_old(struct sock *sk, int len,
if (copy_from_user(&id, optval, sizeof(sctp_assoc_t)))
return -EFAULT;
+ printk(KERN_WARNING "SCTP: Use of SCTP_GET_PEER_ADDRS_NUM_OLD "
+ "socket option deprecated\n");
/* For UDP-style sockets, id specifies the association to query. */
asoc = sctp_id2assoc(sk, id);
if (!asoc)
@@ -4151,6 +4272,9 @@ static int sctp_getsockopt_peer_addrs_old(struct sock *sk, int len,
if (getaddrs.addr_num <= 0) return -EINVAL;
+ printk(KERN_WARNING "SCTP: Use of SCTP_GET_PEER_ADDRS_OLD "
+ "socket option deprecated\n");
+
/* For UDP-style sockets, id specifies the association to query. */
asoc = sctp_id2assoc(sk, getaddrs.assoc_id);
if (!asoc)
@@ -4244,6 +4368,9 @@ static int sctp_getsockopt_local_addrs_num_old(struct sock *sk, int len,
if (copy_from_user(&id, optval, sizeof(sctp_assoc_t)))
return -EFAULT;
+ printk(KERN_WARNING "SCTP: Use of SCTP_GET_LOCAL_ADDRS_NUM_OLD "
+ "socket option deprecated\n");
+
/*
* For UDP-style sockets, id specifies the association to query.
* If the id field is set to the value '0' then the locally bound
@@ -4276,6 +4403,11 @@ static int sctp_getsockopt_local_addrs_num_old(struct sock *sk, int len,
(AF_INET6 == addr->a.sa.sa_family))
continue;
+ if ((PF_INET6 == sk->sk_family) &&
+ inet_v6_ipv6only(sk) &&
+ (AF_INET == addr->a.sa.sa_family))
+ continue;
+
cnt++;
}
rcu_read_unlock();
@@ -4316,6 +4448,10 @@ static int sctp_copy_laddrs_old(struct sock *sk, __u16 port,
if ((PF_INET == sk->sk_family) &&
(AF_INET6 == addr->a.sa.sa_family))
continue;
+ if ((PF_INET6 == sk->sk_family) &&
+ inet_v6_ipv6only(sk) &&
+ (AF_INET == addr->a.sa.sa_family))
+ continue;
memcpy(&temp, &addr->a, sizeof(temp));
if (!temp.v4.sin_port)
temp.v4.sin_port = htons(port);
@@ -4351,6 +4487,10 @@ static int sctp_copy_laddrs(struct sock *sk, __u16 port, void *to,
if ((PF_INET == sk->sk_family) &&
(AF_INET6 == addr->a.sa.sa_family))
continue;
+ if ((PF_INET6 == sk->sk_family) &&
+ inet_v6_ipv6only(sk) &&
+ (AF_INET == addr->a.sa.sa_family))
+ continue;
memcpy(&temp, &addr->a, sizeof(temp));
if (!temp.v4.sin_port)
temp.v4.sin_port = htons(port);
@@ -4404,6 +4544,10 @@ static int sctp_getsockopt_local_addrs_old(struct sock *sk, int len,
if (getaddrs.addr_num <= 0 ||
getaddrs.addr_num >= (INT_MAX / sizeof(union sctp_addr)))
return -EINVAL;
+
+ printk(KERN_WARNING "SCTP: Use of SCTP_GET_LOCAL_ADDRS_OLD "
+ "socket option deprecated\n");
+
/*
* For UDP-style sockets, id specifies the association to query.
* If the id field is set to the value '0' then the locally bound
@@ -5220,8 +5364,8 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
optlen);
break;
- case SCTP_DELAYED_ACK_TIME:
- retval = sctp_getsockopt_delayed_ack_time(sk, len, optval,
+ case SCTP_DELAYED_ACK:
+ retval = sctp_getsockopt_delayed_ack(sk, len, optval,
optlen);
break;
case SCTP_INITMSG:
@@ -5441,12 +5585,13 @@ pp_found:
struct sctp_endpoint *ep2;
ep2 = sctp_sk(sk2)->ep;
- if (reuse && sk2->sk_reuse &&
- sk2->sk_state != SCTP_SS_LISTENING)
+ if (sk == sk2 ||
+ (reuse && sk2->sk_reuse &&
+ sk2->sk_state != SCTP_SS_LISTENING))
continue;
- if (sctp_bind_addr_match(&ep2->base.bind_addr, addr,
- sctp_sk(sk))) {
+ if (sctp_bind_addr_conflict(&ep2->base.bind_addr, addr,
+ sctp_sk(sk2), sctp_sk(sk))) {
ret = (long)sk2;
goto fail_unlock;
}
@@ -5559,8 +5704,13 @@ SCTP_STATIC int sctp_seqpacket_listen(struct sock *sk, int backlog)
if (!ep->base.bind_addr.port) {
if (sctp_autobind(sk))
return -EAGAIN;
- } else
+ } else {
+ if (sctp_get_port(sk, inet_sk(sk)->num)) {
+ sk->sk_state = SCTP_SS_CLOSED;
+ return -EADDRINUSE;
+ }
sctp_sk(sk)->bind_hash->fastreuse = 0;
+ }
sctp_hash_endpoint(ep);
return 0;
@@ -5630,7 +5780,7 @@ int sctp_inet_listen(struct socket *sock, int backlog)
goto out;
/* Allocate HMAC for generating cookie. */
- if (sctp_hmac_alg) {
+ if (!sctp_sk(sk)->hmac && sctp_hmac_alg) {
tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
if (net_ratelimit()) {
@@ -5658,7 +5808,8 @@ int sctp_inet_listen(struct socket *sock, int backlog)
goto cleanup;
/* Store away the transform reference. */
- sctp_sk(sk)->hmac = tfm;
+ if (!sctp_sk(sk)->hmac)
+ sctp_sk(sk)->hmac = tfm;
out:
sctp_release_sock(sk);
return err;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 3f34f61221e..e745c118f23 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -100,6 +100,9 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
INIT_LIST_HEAD(&peer->send_ready);
INIT_LIST_HEAD(&peer->transports);
+ peer->T3_rtx_timer.expires = 0;
+ peer->hb_timer.expires = 0;
+
setup_timer(&peer->T3_rtx_timer, sctp_generate_t3_rtx_event,
(unsigned long)peer);
setup_timer(&peer->hb_timer, sctp_generate_heartbeat_event,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-17 19:05:02 +0000