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-rw-r--r--net/sctp/input.c49
-rw-r--r--net/sctp/ipv6.c36
-rw-r--r--net/sctp/proc.c194
-rw-r--r--net/sctp/protocol.c7
-rw-r--r--net/sctp/socket.c12
5 files changed, 217 insertions, 81 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c
index b719a77d66b4..fffc880a646d 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -178,6 +178,37 @@ int sctp_rcv(struct sk_buff *skb)
asoc = __sctp_rcv_lookup(skb, &src, &dest, &transport);
+ if (!asoc)
+ ep = __sctp_rcv_lookup_endpoint(&dest);
+
+ /* Retrieve the common input handling substructure. */
+ rcvr = asoc ? &asoc->base : &ep->base;
+ sk = rcvr->sk;
+
+ /*
+ * If a frame arrives on an interface and the receiving socket is
+ * bound to another interface, via SO_BINDTODEVICE, treat it as OOTB
+ */
+ if (sk->sk_bound_dev_if && (sk->sk_bound_dev_if != af->skb_iif(skb)))
+ {
+ sock_put(sk);
+ if (asoc) {
+ sctp_association_put(asoc);
+ asoc = NULL;
+ } else {
+ sctp_endpoint_put(ep);
+ ep = NULL;
+ }
+ sk = sctp_get_ctl_sock();
+ ep = sctp_sk(sk)->ep;
+ sctp_endpoint_hold(ep);
+ sock_hold(sk);
+ rcvr = &ep->base;
+ }
+
+ if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
+ goto discard_release;
+
/*
* RFC 2960, 8.4 - Handle "Out of the blue" Packets.
* An SCTP packet is called an "out of the blue" (OOTB)
@@ -187,22 +218,12 @@ int sctp_rcv(struct sk_buff *skb)
* packet belongs.
*/
if (!asoc) {
- ep = __sctp_rcv_lookup_endpoint(&dest);
if (sctp_rcv_ootb(skb)) {
SCTP_INC_STATS_BH(SCTP_MIB_OUTOFBLUES);
goto discard_release;
}
}
- /* Retrieve the common input handling substructure. */
- rcvr = asoc ? &asoc->base : &ep->base;
- sk = rcvr->sk;
-
- if ((sk) && (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)) {
- goto discard_release;
- }
-
-
/* SCTP seems to always need a timestamp right now (FIXME) */
if (skb->stamp.tv_sec == 0) {
do_gettimeofday(&skb->stamp);
@@ -265,13 +286,11 @@ discard_it:
discard_release:
/* Release any structures we may be holding. */
- if (asoc) {
- sock_put(asoc->base.sk);
+ sock_put(sk);
+ if (asoc)
sctp_association_put(asoc);
- } else {
- sock_put(ep->base.sk);
+ else
sctp_endpoint_put(ep);
- }
goto discard_it;
}
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index c9d9ea064734..c7e42d125b9c 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -812,26 +812,23 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
if (addr->sa.sa_family != AF_INET6)
af = sctp_get_af_specific(addr->sa.sa_family);
else {
- struct sock *sk;
int type = ipv6_addr_type(&addr->v6.sin6_addr);
- sk = sctp_opt2sk(opt);
+ struct net_device *dev;
+
if (type & IPV6_ADDR_LINKLOCAL) {
- /* Note: Behavior similar to af_inet6.c:
- * 1) Overrides previous bound_dev_if
- * 2) Destructive even if bind isn't successful.
- */
-
- if (addr->v6.sin6_scope_id)
- sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
- if (!sk->sk_bound_dev_if)
+ if (!addr->v6.sin6_scope_id)
+ return 0;
+ dev = dev_get_by_index(addr->v6.sin6_scope_id);
+ if (!dev)
return 0;
+ dev_put(dev);
}
af = opt->pf->af;
}
return af->available(addr, opt);
}
-/* Verify that the provided sockaddr looks bindable. Common verification,
+/* Verify that the provided sockaddr looks sendable. Common verification,
* has already been taken care of.
*/
static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
@@ -842,19 +839,16 @@ static int sctp_inet6_send_verify(struct sctp_sock *opt, union sctp_addr *addr)
if (addr->sa.sa_family != AF_INET6)
af = sctp_get_af_specific(addr->sa.sa_family);
else {
- struct sock *sk;
int type = ipv6_addr_type(&addr->v6.sin6_addr);
- sk = sctp_opt2sk(opt);
+ struct net_device *dev;
+
if (type & IPV6_ADDR_LINKLOCAL) {
- /* Note: Behavior similar to af_inet6.c:
- * 1) Overrides previous bound_dev_if
- * 2) Destructive even if bind isn't successful.
- */
-
- if (addr->v6.sin6_scope_id)
- sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
- if (!sk->sk_bound_dev_if)
+ if (!addr->v6.sin6_scope_id)
+ return 0;
+ dev = dev_get_by_index(addr->v6.sin6_scope_id);
+ if (!dev)
return 0;
+ dev_put(dev);
}
af = opt->pf->af;
}
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index e42fd8c2916b..98d49ec9b74b 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -132,14 +132,25 @@ void sctp_snmp_proc_exit(void)
static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)
{
struct list_head *pos;
+ struct sctp_association *asoc;
struct sctp_sockaddr_entry *laddr;
- union sctp_addr *addr;
+ struct sctp_transport *peer;
+ union sctp_addr *addr, *primary = NULL;
struct sctp_af *af;
+ if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {
+ asoc = sctp_assoc(epb);
+ peer = asoc->peer.primary_path;
+ primary = &peer->saddr;
+ }
+
list_for_each(pos, &epb->bind_addr.address_list) {
laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
addr = (union sctp_addr *)&laddr->a;
af = sctp_get_af_specific(addr->sa.sa_family);
+ if (primary && af->cmp_addr(addr, primary)) {
+ seq_printf(seq, "*");
+ }
af->seq_dump_addr(seq, addr);
}
}
@@ -149,17 +160,54 @@ static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_associa
{
struct list_head *pos;
struct sctp_transport *transport;
- union sctp_addr *addr;
+ union sctp_addr *addr, *primary;
struct sctp_af *af;
+ primary = &(assoc->peer.primary_addr);
list_for_each(pos, &assoc->peer.transport_addr_list) {
transport = list_entry(pos, struct sctp_transport, transports);
addr = (union sctp_addr *)&transport->ipaddr;
af = sctp_get_af_specific(addr->sa.sa_family);
+ if (af->cmp_addr(addr, primary)) {
+ seq_printf(seq, "*");
+ }
af->seq_dump_addr(seq, addr);
}
}
+static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ if (*pos > sctp_ep_hashsize)
+ return NULL;
+
+ if (*pos < 0)
+ *pos = 0;
+
+ if (*pos == 0)
+ seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
+
+ ++*pos;
+
+ return (void *)pos;
+}
+
+static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
+{
+ return;
+}
+
+
+static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ if (*pos > sctp_ep_hashsize)
+ return NULL;
+
+ ++*pos;
+
+ return pos;
+}
+
+
/* Display sctp endpoints (/proc/net/sctp/eps). */
static int sctp_eps_seq_show(struct seq_file *seq, void *v)
{
@@ -167,38 +215,50 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
struct sctp_ep_common *epb;
struct sctp_endpoint *ep;
struct sock *sk;
- int hash;
-
- seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT LADDRS\n");
- for (hash = 0; hash < sctp_ep_hashsize; hash++) {
- head = &sctp_ep_hashtable[hash];
- read_lock(&head->lock);
- for (epb = head->chain; epb; epb = epb->next) {
- ep = sctp_ep(epb);
- sk = epb->sk;
- seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d ", ep, sk,
- sctp_sk(sk)->type, sk->sk_state, hash,
- epb->bind_addr.port);
- sctp_seq_dump_local_addrs(seq, epb);
- seq_printf(seq, "\n");
- }
- read_unlock(&head->lock);
+ int hash = *(int *)v;
+
+ if (hash > sctp_ep_hashsize)
+ return -ENOMEM;
+
+ head = &sctp_ep_hashtable[hash-1];
+ sctp_local_bh_disable();
+ read_lock(&head->lock);
+ for (epb = head->chain; epb; epb = epb->next) {
+ ep = sctp_ep(epb);
+ sk = epb->sk;
+ seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
+ sctp_sk(sk)->type, sk->sk_state, hash-1,
+ epb->bind_addr.port,
+ sock_i_uid(sk), sock_i_ino(sk));
+
+ sctp_seq_dump_local_addrs(seq, epb);
+ seq_printf(seq, "\n");
}
+ read_unlock(&head->lock);
+ sctp_local_bh_enable();
return 0;
}
+static struct seq_operations sctp_eps_ops = {
+ .start = sctp_eps_seq_start,
+ .next = sctp_eps_seq_next,
+ .stop = sctp_eps_seq_stop,
+ .show = sctp_eps_seq_show,
+};
+
+
/* Initialize the seq file operations for 'eps' object. */
static int sctp_eps_seq_open(struct inode *inode, struct file *file)
{
- return single_open(file, sctp_eps_seq_show, NULL);
+ return seq_open(file, &sctp_eps_ops);
}
static struct file_operations sctp_eps_seq_fops = {
.open = sctp_eps_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = single_release,
+ .release = seq_release,
};
/* Set up the proc fs entry for 'eps' object. */
@@ -221,6 +281,40 @@ void sctp_eps_proc_exit(void)
remove_proc_entry("eps", proc_net_sctp);
}
+
+static void * sctp_assocs_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, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
+ "RPORT LADDRS <-> RADDRS\n");
+
+ ++*pos;
+
+ return (void *)pos;
+}
+
+static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
+{
+ return;
+}
+
+
+static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ if (*pos > sctp_assoc_hashsize)
+ return NULL;
+
+ ++*pos;
+
+ return pos;
+}
+
/* Display sctp associations (/proc/net/sctp/assocs). */
static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
{
@@ -228,43 +322,57 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
struct sctp_ep_common *epb;
struct sctp_association *assoc;
struct sock *sk;
- int hash;
-
- seq_printf(seq, " ASSOC SOCK STY SST ST HBKT LPORT RPORT "
- "LADDRS <-> RADDRS\n");
- for (hash = 0; hash < sctp_assoc_hashsize; hash++) {
- head = &sctp_assoc_hashtable[hash];
- read_lock(&head->lock);
- for (epb = head->chain; epb; epb = epb->next) {
- assoc = sctp_assoc(epb);
- sk = epb->sk;
- seq_printf(seq,
- "%8p %8p %-3d %-3d %-2d %-4d %-5d %-5d ",
- assoc, sk, sctp_sk(sk)->type, sk->sk_state,
- assoc->state, hash, epb->bind_addr.port,
- assoc->peer.port);
- sctp_seq_dump_local_addrs(seq, epb);
- seq_printf(seq, "<-> ");
- sctp_seq_dump_remote_addrs(seq, assoc);
- seq_printf(seq, "\n");
- }
- read_unlock(&head->lock);
+ int hash = *(int *)v;
+
+ if (hash > sctp_assoc_hashsize)
+ return -ENOMEM;
+
+ head = &sctp_assoc_hashtable[hash-1];
+ sctp_local_bh_disable();
+ read_lock(&head->lock);
+ for (epb = head->chain; epb; epb = epb->next) {
+ assoc = sctp_assoc(epb);
+ sk = epb->sk;
+ seq_printf(seq,
+ "%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
+ assoc, sk, sctp_sk(sk)->type, sk->sk_state,
+ assoc->state, hash-1, assoc->assoc_id,
+ (sk->sk_rcvbuf - assoc->rwnd),
+ assoc->sndbuf_used,
+ sock_i_uid(sk), sock_i_ino(sk),
+ epb->bind_addr.port,
+ assoc->peer.port);
+
+ seq_printf(seq, " ");
+ sctp_seq_dump_local_addrs(seq, epb);
+ seq_printf(seq, "<-> ");
+ sctp_seq_dump_remote_addrs(seq, assoc);
+ seq_printf(seq, "\n");
}
+ read_unlock(&head->lock);
+ sctp_local_bh_enable();
return 0;
}
+static struct seq_operations sctp_assoc_ops = {
+ .start = sctp_assocs_seq_start,
+ .next = sctp_assocs_seq_next,
+ .stop = sctp_assocs_seq_stop,
+ .show = sctp_assocs_seq_show,
+};
+
/* Initialize the seq file operations for 'assocs' object. */
static int sctp_assocs_seq_open(struct inode *inode, struct file *file)
{
- return single_open(file, sctp_assocs_seq_show, NULL);
+ return seq_open(file, &sctp_assoc_ops);
}
static struct file_operations sctp_assocs_seq_fops = {
.open = sctp_assocs_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = single_release,
+ .release = seq_release,
};
/* Set up the proc fs entry for 'assocs' object. */
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 2e1f9c3556f5..5135e1a25d25 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -378,10 +378,13 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
{
int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
- /* FIXME: ip_nonlocal_bind sysctl support. */
- if (addr->v4.sin_addr.s_addr != INADDR_ANY && ret != RTN_LOCAL)
+ if (addr->v4.sin_addr.s_addr != INADDR_ANY &&
+ ret != RTN_LOCAL &&
+ !sp->inet.freebind &&
+ !sysctl_ip_nonlocal_bind)
return 0;
+
return 1;
}
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 0b338eca6dc0..2a3c0e08a090 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4686,6 +4686,7 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
struct sctp_endpoint *newep = newsp->ep;
struct sk_buff *skb, *tmp;
struct sctp_ulpevent *event;
+ int flags = 0;
/* Migrate socket buffer sizes and all the socket level options to the
* new socket.
@@ -4707,6 +4708,17 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
sctp_sk(newsk)->bind_hash = pp;
inet_sk(newsk)->num = inet_sk(oldsk)->num;
+ /* Copy the bind_addr list from the original endpoint to the new
+ * endpoint so that we can handle restarts properly
+ */
+ if (assoc->peer.ipv4_address)
+ flags |= SCTP_ADDR4_PEERSUPP;
+ if (assoc->peer.ipv6_address)
+ flags |= SCTP_ADDR6_PEERSUPP;
+ sctp_bind_addr_copy(&newsp->ep->base.bind_addr,
+ &oldsp->ep->base.bind_addr,
+ SCTP_SCOPE_GLOBAL, GFP_KERNEL, flags);
+
/* Move any messages in the old socket's receive queue that are for the
* peeled off association to the new socket's receive queue.
*/
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-04 02:20:58 +0100