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-rw-r--r--net/sctp/associola.c4
-rw-r--r--net/sctp/input.c20
-rw-r--r--net/sctp/ipv6.c3
-rw-r--r--net/sctp/output.c81
-rw-r--r--net/sctp/sm_make_chunk.c2
-rw-r--r--net/sctp/socket.c6
-rw-r--r--net/sctp/transport.c14
7 files changed, 91 insertions, 39 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index b16517ee1aaf..8cf348e62e74 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1360,7 +1360,7 @@ struct sctp_transport *sctp_assoc_choose_alter_transport(
/* Update the association's pmtu and frag_point by going through all the
* transports. This routine is called when a transport's PMTU has changed.
*/
-void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
+void sctp_assoc_sync_pmtu(struct sock *sk, struct sctp_association *asoc)
{
struct sctp_transport *t;
__u32 pmtu = 0;
@@ -1372,7 +1372,7 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
list_for_each_entry(t, &asoc->peer.transport_addr_list,
transports) {
if (t->pmtu_pending && t->dst) {
- sctp_transport_update_pmtu(t, dst_mtu(t->dst));
+ sctp_transport_update_pmtu(sk, t, dst_mtu(t->dst));
t->pmtu_pending = 0;
}
if (!pmtu || (t->pathmtu < pmtu))
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 8b9b6790a3df..e64d5210ed13 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -408,10 +408,10 @@ void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc,
if (t->param_flags & SPP_PMTUD_ENABLE) {
/* Update transports view of the MTU */
- sctp_transport_update_pmtu(t, pmtu);
+ sctp_transport_update_pmtu(sk, t, pmtu);
/* Update association pmtu. */
- sctp_assoc_sync_pmtu(asoc);
+ sctp_assoc_sync_pmtu(sk, asoc);
}
/* Retransmit with the new pmtu setting.
@@ -423,6 +423,18 @@ void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc,
sctp_retransmit(&asoc->outqueue, t, SCTP_RTXR_PMTUD);
}
+void sctp_icmp_redirect(struct sock *sk, struct sctp_transport *t,
+ struct sk_buff *skb)
+{
+ struct dst_entry *dst;
+
+ if (!t)
+ return;
+ dst = sctp_transport_dst_check(t);
+ if (dst)
+ dst->ops->redirect(dst, sk, skb);
+}
+
/*
* SCTP Implementer's Guide, 2.37 ICMP handling procedures
*
@@ -628,6 +640,10 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
err = EHOSTUNREACH;
break;
+ case ICMP_REDIRECT:
+ sctp_icmp_redirect(sk, transport, skb);
+ err = 0;
+ break;
default:
goto out_unlock;
}
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 91f479121c55..ed7139ea7978 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -185,6 +185,9 @@ SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
goto out_unlock;
}
break;
+ case NDISC_REDIRECT:
+ sctp_icmp_redirect(sk, transport, skb);
+ break;
default:
break;
}
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 6ae47acaaec6..838e18b4d7ea 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -64,6 +64,8 @@
#include <net/sctp/checksum.h>
/* Forward declarations for private helpers. */
+static sctp_xmit_t __sctp_packet_append_chunk(struct sctp_packet *packet,
+ struct sctp_chunk *chunk);
static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
struct sctp_chunk *chunk);
static void sctp_packet_append_data(struct sctp_packet *packet,
@@ -224,7 +226,10 @@ static sctp_xmit_t sctp_packet_bundle_auth(struct sctp_packet *pkt,
if (!auth)
return retval;
- retval = sctp_packet_append_chunk(pkt, auth);
+ retval = __sctp_packet_append_chunk(pkt, auth);
+
+ if (retval != SCTP_XMIT_OK)
+ sctp_chunk_free(auth);
return retval;
}
@@ -256,48 +261,31 @@ static sctp_xmit_t sctp_packet_bundle_sack(struct sctp_packet *pkt,
asoc->a_rwnd = asoc->rwnd;
sack = sctp_make_sack(asoc);
if (sack) {
- retval = sctp_packet_append_chunk(pkt, sack);
+ retval = __sctp_packet_append_chunk(pkt, sack);
+ if (retval != SCTP_XMIT_OK) {
+ sctp_chunk_free(sack);
+ goto out;
+ }
asoc->peer.sack_needed = 0;
if (del_timer(timer))
sctp_association_put(asoc);
}
}
}
+out:
return retval;
}
+
/* Append a chunk to the offered packet reporting back any inability to do
* so.
*/
-sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
- struct sctp_chunk *chunk)
+static sctp_xmit_t __sctp_packet_append_chunk(struct sctp_packet *packet,
+ struct sctp_chunk *chunk)
{
sctp_xmit_t retval = SCTP_XMIT_OK;
__u16 chunk_len = WORD_ROUND(ntohs(chunk->chunk_hdr->length));
- SCTP_DEBUG_PRINTK("%s: packet:%p chunk:%p\n", __func__, packet,
- chunk);
-
- /* Data chunks are special. Before seeing what else we can
- * bundle into this packet, check to see if we are allowed to
- * send this DATA.
- */
- if (sctp_chunk_is_data(chunk)) {
- retval = sctp_packet_can_append_data(packet, chunk);
- if (retval != SCTP_XMIT_OK)
- goto finish;
- }
-
- /* Try to bundle AUTH chunk */
- retval = sctp_packet_bundle_auth(packet, chunk);
- if (retval != SCTP_XMIT_OK)
- goto finish;
-
- /* Try to bundle SACK chunk */
- retval = sctp_packet_bundle_sack(packet, chunk);
- if (retval != SCTP_XMIT_OK)
- goto finish;
-
/* Check to see if this chunk will fit into the packet */
retval = sctp_packet_will_fit(packet, chunk, chunk_len);
if (retval != SCTP_XMIT_OK)
@@ -339,6 +327,43 @@ finish:
return retval;
}
+/* Append a chunk to the offered packet reporting back any inability to do
+ * so.
+ */
+sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *packet,
+ struct sctp_chunk *chunk)
+{
+ sctp_xmit_t retval = SCTP_XMIT_OK;
+
+ SCTP_DEBUG_PRINTK("%s: packet:%p chunk:%p\n", __func__, packet,
+ chunk);
+
+ /* Data chunks are special. Before seeing what else we can
+ * bundle into this packet, check to see if we are allowed to
+ * send this DATA.
+ */
+ if (sctp_chunk_is_data(chunk)) {
+ retval = sctp_packet_can_append_data(packet, chunk);
+ if (retval != SCTP_XMIT_OK)
+ goto finish;
+ }
+
+ /* Try to bundle AUTH chunk */
+ retval = sctp_packet_bundle_auth(packet, chunk);
+ if (retval != SCTP_XMIT_OK)
+ goto finish;
+
+ /* Try to bundle SACK chunk */
+ retval = sctp_packet_bundle_sack(packet, chunk);
+ if (retval != SCTP_XMIT_OK)
+ goto finish;
+
+ retval = __sctp_packet_append_chunk(packet, chunk);
+
+finish:
+ return retval;
+}
+
/* All packets are sent to the network through this function from
* sctp_outq_tail().
*
@@ -385,7 +410,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
if (!sctp_transport_dst_check(tp)) {
sctp_transport_route(tp, NULL, sctp_sk(sk));
if (asoc && (asoc->param_flags & SPP_PMTUD_ENABLE)) {
- sctp_assoc_sync_pmtu(asoc);
+ sctp_assoc_sync_pmtu(sk, asoc);
}
}
dst = dst_clone(tp->dst);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index b6de71efb140..479a70ef6ff8 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -132,7 +132,7 @@ void sctp_init_cause(struct sctp_chunk *chunk, __be16 cause_code,
* abort chunk. Differs from sctp_init_cause in that it won't oops
* if there isn't enough space in the op error chunk
*/
-int sctp_init_cause_fixed(struct sctp_chunk *chunk, __be16 cause_code,
+static int sctp_init_cause_fixed(struct sctp_chunk *chunk, __be16 cause_code,
size_t paylen)
{
sctp_errhdr_t err;
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 31c7bfcd9b58..5d488cdcf679 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -1859,7 +1859,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
}
if (asoc->pmtu_pending)
- sctp_assoc_pending_pmtu(asoc);
+ sctp_assoc_pending_pmtu(sk, asoc);
/* If fragmentation is disabled and the message length exceeds the
* association fragmentation point, return EMSGSIZE. The I-D
@@ -2373,7 +2373,7 @@ static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
if ((params->spp_flags & SPP_PMTUD_DISABLE) && params->spp_pathmtu) {
if (trans) {
trans->pathmtu = params->spp_pathmtu;
- sctp_assoc_sync_pmtu(asoc);
+ sctp_assoc_sync_pmtu(sctp_opt2sk(sp), asoc);
} else if (asoc) {
asoc->pathmtu = params->spp_pathmtu;
sctp_frag_point(asoc, params->spp_pathmtu);
@@ -2390,7 +2390,7 @@ static int sctp_apply_peer_addr_params(struct sctp_paddrparams *params,
(trans->param_flags & ~SPP_PMTUD) | pmtud_change;
if (update) {
sctp_transport_pmtu(trans, sctp_opt2sk(sp));
- sctp_assoc_sync_pmtu(asoc);
+ sctp_assoc_sync_pmtu(sctp_opt2sk(sp), asoc);
}
} else if (asoc) {
asoc->param_flags =
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 1dcceb6e0ce6..a6b7ee9ce28a 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -228,7 +228,7 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
}
-void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu)
+void sctp_transport_update_pmtu(struct sock *sk, struct sctp_transport *t, u32 pmtu)
{
struct dst_entry *dst;
@@ -245,8 +245,16 @@ void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu)
}
dst = sctp_transport_dst_check(t);
- if (dst)
- dst->ops->update_pmtu(dst, pmtu);
+ if (!dst)
+ t->af_specific->get_dst(t, &t->saddr, &t->fl, sk);
+
+ if (dst) {
+ dst->ops->update_pmtu(dst, sk, NULL, pmtu);
+
+ dst = sctp_transport_dst_check(t);
+ if (!dst)
+ t->af_specific->get_dst(t, &t->saddr, &t->fl, sk);
+ }
}
/* Caches the dst entry and source address for a transport's destination
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-11 10:40:28 +0300