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-rw-r--r--net/sctp/Makefile2
-rw-r--r--net/sctp/associola.c59
-rw-r--r--net/sctp/bind_addr.c3
-rw-r--r--net/sctp/chunk.c139
-rw-r--r--net/sctp/debug.c5
-rw-r--r--net/sctp/endpointola.c6
-rw-r--r--net/sctp/input.c130
-rw-r--r--net/sctp/ipv6.c26
-rw-r--r--net/sctp/objcnt.c2
-rw-r--r--net/sctp/offload.c2
-rw-r--r--net/sctp/output.c526
-rw-r--r--net/sctp/outqueue.c55
-rw-r--r--net/sctp/primitive.c3
-rw-r--r--net/sctp/proc.c4
-rw-r--r--net/sctp/protocol.c70
-rw-r--r--net/sctp/sm_make_chunk.c361
-rw-r--r--net/sctp/sm_sideeffect.c38
-rw-r--r--net/sctp/sm_statefuns.c232
-rw-r--r--net/sctp/sm_statetable.c70
-rw-r--r--net/sctp/socket.c238
-rw-r--r--net/sctp/ssnmap.c125
-rw-r--r--net/sctp/stream.c506
-rw-r--r--net/sctp/transport.c58
-rw-r--r--net/sctp/ulpevent.c29
-rw-r--r--net/sctp/ulpqueue.c36
25 files changed, 1890 insertions, 835 deletions
diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index 6c4f7496cec6..70f1b570bab9 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -11,7 +11,7 @@ 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 \
tsnmap.o bind_addr.o socket.o primitive.o \
- output.o input.o debug.o ssnmap.o auth.o \
+ output.o input.o debug.o stream.o auth.o \
offload.o
sctp_probe-y := probe.o
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index f10d3397f917..a9708da28eb5 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -71,9 +71,8 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
{
struct net *net = sock_net(sk);
struct sctp_sock *sp;
- int i;
sctp_paramhdr_t *p;
- int err;
+ int i;
/* Retrieve the SCTP per socket area. */
sp = sctp_sk((struct sock *)sk);
@@ -207,6 +206,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
* association to the same value as the initial TSN.
*/
asoc->addip_serial = asoc->c.initial_tsn;
+ asoc->strreset_outseq = asoc->c.initial_tsn;
INIT_LIST_HEAD(&asoc->addip_chunk_list);
INIT_LIST_HEAD(&asoc->asconf_ack_list);
@@ -246,6 +246,9 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
if (!sctp_ulpq_init(&asoc->ulpq, asoc))
goto fail_init;
+ if (sctp_stream_new(asoc, gfp))
+ goto fail_init;
+
/* Assume that peer would support both address types unless we are
* told otherwise.
*/
@@ -263,12 +266,13 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
/* AUTH related initializations */
INIT_LIST_HEAD(&asoc->endpoint_shared_keys);
- err = sctp_auth_asoc_copy_shkeys(ep, asoc, gfp);
- if (err)
- goto fail_init;
+ if (sctp_auth_asoc_copy_shkeys(ep, asoc, gfp))
+ goto stream_free;
asoc->active_key_id = ep->active_key_id;
asoc->prsctp_enable = ep->prsctp_enable;
+ asoc->reconf_enable = ep->reconf_enable;
+ asoc->strreset_enable = ep->strreset_enable;
/* Save the hmacs and chunks list into this association */
if (ep->auth_hmacs_list)
@@ -286,6 +290,8 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
return asoc;
+stream_free:
+ sctp_stream_free(asoc->stream);
fail_init:
sock_put(asoc->base.sk);
sctp_endpoint_put(asoc->ep);
@@ -358,8 +364,11 @@ void sctp_association_free(struct sctp_association *asoc)
sctp_tsnmap_free(&asoc->peer.tsn_map);
- /* Free ssnmap storage. */
- sctp_ssnmap_free(asoc->ssnmap);
+ /* Free stream information. */
+ sctp_stream_free(asoc->stream);
+
+ if (asoc->strreset_chunk)
+ sctp_chunk_free(asoc->strreset_chunk);
/* Clean up the bound address list. */
sctp_bind_addr_free(&asoc->base.bind_addr);
@@ -519,6 +528,12 @@ void sctp_assoc_rm_peer(struct sctp_association *asoc,
if (asoc->peer.last_data_from == peer)
asoc->peer.last_data_from = transport;
+ if (asoc->strreset_chunk &&
+ asoc->strreset_chunk->transport == peer) {
+ asoc->strreset_chunk->transport = transport;
+ sctp_transport_reset_reconf_timer(transport);
+ }
+
/* If we remove the transport an INIT was last sent to, set it to
* NULL. Combined with the update of the retran path above, this
* will cause the next INIT to be sent to the next available
@@ -700,11 +715,15 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
/* Set the peer's active state. */
peer->state = peer_state;
+ /* Add this peer into the transport hashtable */
+ if (sctp_hash_transport(peer)) {
+ sctp_transport_free(peer);
+ return NULL;
+ }
+
/* Attach the remote transport to our asoc. */
list_add_tail_rcu(&peer->transports, &asoc->peer.transport_addr_list);
asoc->peer.transport_count++;
- /* Add this peer into the transport hashtable */
- sctp_hash_transport(peer);
/* If we do not yet have a primary path, set one. */
if (!asoc->peer.primary_path) {
@@ -816,8 +835,7 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
if (transport->state != SCTP_UNCONFIRMED)
transport->state = SCTP_INACTIVE;
else {
- dst_release(transport->dst);
- transport->dst = NULL;
+ sctp_transport_dst_release(transport);
ulp_notify = false;
}
@@ -1133,7 +1151,7 @@ void sctp_assoc_update(struct sctp_association *asoc,
/* Reinitialize SSN for both local streams
* and peer's streams.
*/
- sctp_ssnmap_clear(asoc->ssnmap);
+ sctp_stream_clear(asoc->stream);
/* Flush the ULP reassembly and ordered queue.
* Any data there will now be stale and will
@@ -1158,10 +1176,9 @@ void sctp_assoc_update(struct sctp_association *asoc,
asoc->ctsn_ack_point = asoc->next_tsn - 1;
asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
- if (!asoc->ssnmap) {
- /* Move the ssnmap. */
- asoc->ssnmap = new->ssnmap;
- new->ssnmap = NULL;
+ if (!asoc->stream) {
+ asoc->stream = new->stream;
+ new->stream = NULL;
}
if (!asoc->assoc_id) {
@@ -1395,7 +1412,7 @@ sctp_assoc_choose_alter_transport(struct sctp_association *asoc,
/* 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 sock *sk, struct sctp_association *asoc)
+void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
{
struct sctp_transport *t;
__u32 pmtu = 0;
@@ -1407,8 +1424,8 @@ void sctp_assoc_sync_pmtu(struct sock *sk, 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(sk, t,
- SCTP_TRUNC4(dst_mtu(t->dst)));
+ sctp_transport_update_pmtu(
+ t, SCTP_TRUNC4(dst_mtu(t->dst)));
t->pmtu_pending = 0;
}
if (!pmtu || (t->pathmtu < pmtu))
@@ -1467,7 +1484,7 @@ void sctp_assoc_rwnd_increase(struct sctp_association *asoc, unsigned int len)
* threshold. The idea is to recover slowly, but up
* to the initial advertised window.
*/
- if (asoc->rwnd_press && asoc->rwnd >= asoc->rwnd_press) {
+ if (asoc->rwnd_press) {
int change = min(asoc->pathmtu, asoc->rwnd_press);
asoc->rwnd += change;
asoc->rwnd_press -= change;
@@ -1535,7 +1552,7 @@ void sctp_assoc_rwnd_decrease(struct sctp_association *asoc, unsigned int len)
asoc->rwnd = 0;
}
} else {
- asoc->rwnd_over = len - asoc->rwnd;
+ asoc->rwnd_over += len - asoc->rwnd;
asoc->rwnd = 0;
}
diff --git a/net/sctp/bind_addr.c b/net/sctp/bind_addr.c
index 401c60750b20..1ebc184a0e23 100644
--- a/net/sctp/bind_addr.c
+++ b/net/sctp/bind_addr.c
@@ -292,6 +292,8 @@ int sctp_raw_to_bind_addrs(struct sctp_bind_addr *bp, __u8 *raw_addr_list,
}
af->from_addr_param(&addr, rawaddr, htons(port), 0);
+ if (sctp_bind_addr_state(bp, &addr) != -1)
+ goto next;
retval = sctp_add_bind_addr(bp, &addr, sizeof(addr),
SCTP_ADDR_SRC, gfp);
if (retval) {
@@ -300,6 +302,7 @@ int sctp_raw_to_bind_addrs(struct sctp_bind_addr *bp, __u8 *raw_addr_list,
break;
}
+next:
len = ntohs(param->length);
addrs_len -= len;
raw_addr_list += len;
diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 7a1cdf43e49d..e3621cb4827f 100644
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -52,7 +52,6 @@ static void sctp_datamsg_init(struct sctp_datamsg *msg)
atomic_set(&msg->refcnt, 1);
msg->send_failed = 0;
msg->send_error = 0;
- msg->can_abandon = 0;
msg->can_delay = 1;
msg->expires_at = 0;
INIT_LIST_HEAD(&msg->chunks);
@@ -166,14 +165,12 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
struct sctp_sndrcvinfo *sinfo,
struct iov_iter *from)
{
- int max, whole, i, offset, over, err;
- int len, first_len;
- int max_data;
+ size_t len, first_len, max_data, remaining;
+ size_t msg_len = iov_iter_count(from);
+ struct list_head *pos, *temp;
struct sctp_chunk *chunk;
struct sctp_datamsg *msg;
- struct list_head *pos, *temp;
- size_t msg_len = iov_iter_count(from);
- __u8 frag;
+ int err;
msg = sctp_datamsg_new(GFP_KERNEL);
if (!msg)
@@ -182,20 +179,11 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
/* Note: Calculate this outside of the loop, so that all fragments
* have the same expiration.
*/
- if (sinfo->sinfo_timetolive) {
- /* sinfo_timetolive is in milliseconds */
+ if (asoc->peer.prsctp_capable && sinfo->sinfo_timetolive &&
+ (SCTP_PR_TTL_ENABLED(sinfo->sinfo_flags) ||
+ !SCTP_PR_POLICY(sinfo->sinfo_flags)))
msg->expires_at = jiffies +
- msecs_to_jiffies(sinfo->sinfo_timetolive);
- msg->can_abandon = 1;
-
- pr_debug("%s: msg:%p expires_at:%ld jiffies:%ld\n", __func__,
- msg, msg->expires_at, jiffies);
- }
-
- if (asoc->peer.prsctp_capable &&
- SCTP_PR_TTL_ENABLED(sinfo->sinfo_flags))
- msg->expires_at =
- jiffies + msecs_to_jiffies(sinfo->sinfo_timetolive);
+ msecs_to_jiffies(sinfo->sinfo_timetolive);
/* This is the biggest possible DATA chunk that can fit into
* the packet
@@ -205,7 +193,6 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
sizeof(struct sctphdr) - sizeof(struct sctp_data_chunk);
max_data = SCTP_TRUNC4(max_data);
- max = asoc->frag_point;
/* If the the peer requested that we authenticate DATA chunks
* we need to account for bundling of the AUTH chunks along with
* DATA.
@@ -218,12 +205,11 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
hmac_desc->hmac_len);
}
- /* Now, check if we need to reduce our max */
- if (max > max_data)
- max = max_data;
+ /* Check what's our max considering the above */
+ max_data = min_t(size_t, max_data, asoc->frag_point);
- whole = 0;
- first_len = max;
+ /* Set first_len and then account for possible bundles on first frag */
+ first_len = max_data;
/* Check to see if we have a pending SACK and try to let it be bundled
* with this message. Do this if we don't have any data queued already.
@@ -234,40 +220,38 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
if (timer_pending(&asoc->timers[SCTP_EVENT_TIMEOUT_SACK]) &&
asoc->outqueue.out_qlen == 0 &&
list_empty(&asoc->outqueue.retransmit) &&
- msg_len > max)
- max_data -= SCTP_PAD4(sizeof(sctp_sack_chunk_t));
+ msg_len > max_data)
+ first_len -= SCTP_PAD4(sizeof(sctp_sack_chunk_t));
/* Encourage Cookie-ECHO bundling. */
if (asoc->state < SCTP_STATE_COOKIE_ECHOED)
- max_data -= SCTP_ARBITRARY_COOKIE_ECHO_LEN;
-
- /* Now that we adjusted completely, reset first_len */
- if (first_len > max_data)
- first_len = max_data;
+ first_len -= SCTP_ARBITRARY_COOKIE_ECHO_LEN;
/* Account for a different sized first fragment */
if (msg_len >= first_len) {
- msg_len -= first_len;
- whole = 1;
msg->can_delay = 0;
- }
-
- /* How many full sized? How many bytes leftover? */
- whole += msg_len / max;
- over = msg_len % max;
- offset = 0;
-
- if ((whole > 1) || (whole && over))
SCTP_INC_STATS(sock_net(asoc->base.sk), SCTP_MIB_FRAGUSRMSGS);
+ } else {
+ /* Which may be the only one... */
+ first_len = msg_len;
+ }
- /* Create chunks for all the full sized DATA chunks. */
- for (i = 0, len = first_len; i < whole; i++) {
- frag = SCTP_DATA_MIDDLE_FRAG;
+ /* Create chunks for all DATA chunks. */
+ for (remaining = msg_len; remaining; remaining -= len) {
+ u8 frag = SCTP_DATA_MIDDLE_FRAG;
- if (0 == i)
+ if (remaining == msg_len) {
+ /* First frag, which may also be the last */
frag |= SCTP_DATA_FIRST_FRAG;
+ len = first_len;
+ } else {
+ /* Middle frags */
+ len = max_data;
+ }
- if ((i == (whole - 1)) && !over) {
+ if (len >= remaining) {
+ /* Last frag, which may also be the first */
+ len = remaining;
frag |= SCTP_DATA_LAST_FRAG;
/* The application requests to set the I-bit of the
@@ -281,7 +265,6 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
chunk = sctp_make_datafrag_empty(asoc, sinfo, len, frag,
0, GFP_KERNEL);
-
if (!chunk) {
err = -ENOMEM;
goto errout;
@@ -292,45 +275,8 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
goto errout_chunk_free;
/* Put the chunk->skb back into the form expected by send. */
- __skb_pull(chunk->skb, (__u8 *)chunk->chunk_hdr
- - (__u8 *)chunk->skb->data);
-
- sctp_datamsg_assign(msg, chunk);
- list_add_tail(&chunk->frag_list, &msg->chunks);
-
- /* The first chunk, the first chunk was likely short
- * to allow bundling, so reset to full size.
- */
- if (0 == i)
- len = max;
- }
-
- /* .. now the leftover bytes. */
- if (over) {
- if (!whole)
- frag = SCTP_DATA_NOT_FRAG;
- else
- frag = SCTP_DATA_LAST_FRAG;
-
- if ((sinfo->sinfo_flags & SCTP_EOF) ||
- (sinfo->sinfo_flags & SCTP_SACK_IMMEDIATELY))
- frag |= SCTP_DATA_SACK_IMM;
-
- chunk = sctp_make_datafrag_empty(asoc, sinfo, over, frag,
- 0, GFP_KERNEL);
-
- if (!chunk) {
- err = -ENOMEM;
- goto errout;
- }
-
- err = sctp_user_addto_chunk(chunk, over, from);
-
- /* Put the chunk->skb back into the form expected by send. */
- __skb_pull(chunk->skb, (__u8 *)chunk->chunk_hdr
- - (__u8 *)chunk->skb->data);
- if (err < 0)
- goto errout_chunk_free;
+ __skb_pull(chunk->skb, (__u8 *)chunk->chunk_hdr -
+ chunk->skb->data);
sctp_datamsg_assign(msg, chunk);
list_add_tail(&chunk->frag_list, &msg->chunks);
@@ -348,24 +294,15 @@ errout:
sctp_chunk_free(chunk);
}
sctp_datamsg_put(msg);
+
return ERR_PTR(err);
}
/* Check whether this message has expired. */
int sctp_chunk_abandoned(struct sctp_chunk *chunk)
{
- if (!chunk->asoc->peer.prsctp_capable ||
- !SCTP_PR_POLICY(chunk->sinfo.sinfo_flags)) {
- struct sctp_datamsg *msg = chunk->msg;
-
- if (!msg->can_abandon)
- return 0;
-
- if (time_after(jiffies, msg->expires_at))
- return 1;
-
+ if (!chunk->asoc->peer.prsctp_capable)
return 0;
- }
if (SCTP_PR_TTL_ENABLED(chunk->sinfo.sinfo_flags) &&
time_after(jiffies, chunk->msg->expires_at)) {
@@ -378,6 +315,10 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
chunk->sent_count > chunk->sinfo.sinfo_timetolive) {
chunk->asoc->abandoned_sent[SCTP_PR_INDEX(RTX)]++;
return 1;
+ } else if (!SCTP_PR_POLICY(chunk->sinfo.sinfo_flags) &&
+ chunk->msg->expires_at &&
+ time_after(jiffies, chunk->msg->expires_at)) {
+ return 1;
}
/* PRIO policy is processed by sendmsg, not here */
diff --git a/net/sctp/debug.c b/net/sctp/debug.c
index 95d7b15dad21..2e47eb2f05cb 100644
--- a/net/sctp/debug.c
+++ b/net/sctp/debug.c
@@ -159,6 +159,7 @@ static const char *const sctp_timer_tbl[] = {
"TIMEOUT_T4_RTO",
"TIMEOUT_T5_SHUTDOWN_GUARD",
"TIMEOUT_HEARTBEAT",
+ "TIMEOUT_RECONF",
"TIMEOUT_SACK",
"TIMEOUT_AUTOCLOSE",
};
@@ -166,7 +167,9 @@ static const char *const sctp_timer_tbl[] = {
/* Lookup timer debug name. */
const char *sctp_tname(const sctp_subtype_t id)
{
- if (id.timeout <= SCTP_EVENT_TIMEOUT_MAX)
+ BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX + 1 != ARRAY_SIZE(sctp_timer_tbl));
+
+ if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))
return sctp_timer_tbl[id.timeout];
return "unknown_timer";
}
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 1f03065686fe..8c589230794f 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -164,6 +164,7 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
ep->auth_hmacs_list = auth_hmacs;
ep->auth_chunk_list = auth_chunks;
ep->prsctp_enable = net->sctp.prsctp_enable;
+ ep->reconf_enable = net->sctp.reconf_enable;
return ep;
@@ -331,7 +332,9 @@ struct sctp_association *sctp_endpoint_lookup_assoc(
* on this endpoint.
*/
if (!ep->base.bind_addr.port)
- goto out;
+ return NULL;
+
+ rcu_read_lock();
t = sctp_epaddr_lookup_transport(ep, paddr);
if (!t)
goto out;
@@ -339,6 +342,7 @@ struct sctp_association *sctp_endpoint_lookup_assoc(
*transport = t;
asoc = t->asoc;
out:
+ rcu_read_unlock();
return asoc;
}
diff --git a/net/sctp/input.c b/net/sctp/input.c
index a01a56ec8b8c..0e06a278d2a9 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -401,10 +401,10 @@ 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(sk, t, pmtu);
+ sctp_transport_update_pmtu(t, pmtu);
/* Update association pmtu. */
- sctp_assoc_sync_pmtu(sk, asoc);
+ sctp_assoc_sync_pmtu(asoc);
}
/* Retransmit with the new pmtu setting.
@@ -790,10 +790,9 @@ hit:
/* rhashtable for transport */
struct sctp_hash_cmp_arg {
- const struct sctp_endpoint *ep;
- const union sctp_addr *laddr;
- const union sctp_addr *paddr;
- const struct net *net;
+ const union sctp_addr *paddr;
+ const struct net *net;
+ u16 lport;
};
static inline int sctp_hash_cmp(struct rhashtable_compare_arg *arg,
@@ -801,7 +800,6 @@ static inline int sctp_hash_cmp(struct rhashtable_compare_arg *arg,
{
struct sctp_transport *t = (struct sctp_transport *)ptr;
const struct sctp_hash_cmp_arg *x = arg->key;
- struct sctp_association *asoc;
int err = 1;
if (!sctp_cmp_addr_exact(&t->ipaddr, x->paddr))
@@ -809,19 +807,10 @@ static inline int sctp_hash_cmp(struct rhashtable_compare_arg *arg,
if (!sctp_transport_hold(t))
return err;
- asoc = t->asoc;
- if (!net_eq(sock_net(asoc->base.sk), x->net))
+ if (!net_eq(sock_net(t->asoc->base.sk), x->net))
+ goto out;
+ if (x->lport != htons(t->asoc->base.bind_addr.port))
goto out;
- if (x->ep) {
- if (x->ep != asoc->ep)
- goto out;
- } else {
- if (x->laddr->v4.sin_port != htons(asoc->base.bind_addr.port))
- goto out;
- if (!sctp_bind_addr_match(&asoc->base.bind_addr,
- x->laddr, sctp_sk(asoc->base.sk)))
- goto out;
- }
err = 0;
out:
@@ -851,11 +840,9 @@ static inline u32 sctp_hash_key(const void *data, u32 len, u32 seed)
const struct sctp_hash_cmp_arg *x = data;
const union sctp_addr *paddr = x->paddr;
const struct net *net = x->net;
- u16 lport;
+ u16 lport = x->lport;
u32 addr;
- lport = x->ep ? htons(x->ep->base.bind_addr.port) :
- x->laddr->v4.sin_port;
if (paddr->sa.sa_family == AF_INET6)
addr = jhash(&paddr->v6.sin6_addr, 16, seed);
else
@@ -875,29 +862,48 @@ static const struct rhashtable_params sctp_hash_params = {
int sctp_transport_hashtable_init(void)
{
- return rhashtable_init(&sctp_transport_hashtable, &sctp_hash_params);
+ return rhltable_init(&sctp_transport_hashtable, &sctp_hash_params);
}
void sctp_transport_hashtable_destroy(void)
{
- rhashtable_destroy(&sctp_transport_hashtable);
+ rhltable_destroy(&sctp_transport_hashtable);
}
-void sctp_hash_transport(struct sctp_transport *t)
+int sctp_hash_transport(struct sctp_transport *t)
{
+ struct sctp_transport *transport;
+ struct rhlist_head *tmp, *list;
struct sctp_hash_cmp_arg arg;
+ int err;
if (t->asoc->temp)
- return;
+ return 0;
- arg.ep = t->asoc->ep;
- arg.paddr = &t->ipaddr;
arg.net = sock_net(t->asoc->base.sk);
+ arg.paddr = &t->ipaddr;
+ arg.lport = htons(t->asoc->base.bind_addr.port);
+
+ rcu_read_lock();
+ list = rhltable_lookup(&sctp_transport_hashtable, &arg,
+ sctp_hash_params);
+
+ rhl_for_each_entry_rcu(transport, tmp, list, node)
+ if (transport->asoc->ep == t->asoc->ep) {
+ rcu_read_unlock();
+ err = -EEXIST;
+ goto out;
+ }
+ rcu_read_unlock();
+
+ err = rhltable_insert_key(&sctp_transport_hashtable, &arg,
+ &t->node, sctp_hash_params);
+
+out:
+ if (err)
+ pr_err_once("insert transport fail, errno %d\n", err);
-reinsert:
- if (rhashtable_lookup_insert_key(&sctp_transport_hashtable, &arg,
- &t->node, sctp_hash_params) == -EBUSY)
- goto reinsert;
+ return err;
}
void sctp_unhash_transport(struct sctp_transport *t)
@@ -905,39 +911,62 @@ void sctp_unhash_transport(struct sctp_transport *t)
if (t->asoc->temp)
return;
- rhashtable_remove_fast(&sctp_transport_hashtable, &t->node,
- sctp_hash_params);
+ rhltable_remove(&sctp_transport_hashtable, &t->node,
+ sctp_hash_params);
}
+/* return a transport with holding it */
struct sctp_transport *sctp_addrs_lookup_transport(
struct net *net,
const union sctp_addr *laddr,
const union sctp_addr *paddr)
{
+ struct rhlist_head *tmp, *list;
+ struct sctp_transport *t;
struct sctp_hash_cmp_arg arg = {
- .ep = NULL,
- .laddr = laddr,
.paddr = paddr,
.net = net,
+ .lport = laddr->v4.sin_port,
};
- return rhashtable_lookup_fast(&sctp_transport_hashtable, &arg,
- sctp_hash_params);
+ list = rhltable_lookup(&sctp_transport_hashtable, &arg,
+ sctp_hash_params);
+
+ rhl_for_each_entry_rcu(t, tmp, list, node) {
+ if (!sctp_transport_hold(t))
+ continue;
+
+ if (sctp_bind_addr_match(&t->asoc->base.bind_addr,
+ laddr, sctp_sk(t->asoc->base.sk)))
+ return t;
+ sctp_transport_put(t);
+ }
+
+ return NULL;
}
+/* return a transport without holding it, as it's only used under sock lock */
struct sctp_transport *sctp_epaddr_lookup_transport(
const struct sctp_endpoint *ep,
const union sctp_addr *paddr)
{
struct net *net = sock_net(ep->base.sk);
+ struct rhlist_head *tmp, *list;
+ struct sctp_transport *t;
struct sctp_hash_cmp_arg arg = {
- .ep = ep,
.paddr = paddr,
.net = net,
+ .lport = htons(ep->base.bind_addr.port),
};
- return rhashtable_lookup_fast(&sctp_transport_hashtable, &arg,
- sctp_hash_params);
+ list = rhltable_lookup(&sctp_transport_hashtable, &arg,
+ sctp_hash_params);
+
+ rhl_for_each_entry_rcu(t, tmp, list, node)
+ if (ep == t->asoc->ep)
+ return t;
+
+ return NULL;
}
/* Look up an association. */
@@ -951,7 +980,7 @@ static struct sctp_association *__sctp_lookup_association(
struct sctp_association *asoc = NULL;
t = sctp_addrs_lookup_transport(net, local, peer);
- if (!t || !sctp_transport_hold(t))
+ if (!t)
goto out;
asoc = t->asoc;
@@ -1216,13 +1245,26 @@ static struct sctp_association *__sctp_rcv_lookup(struct net *net,
struct sctp_association *asoc;
asoc = __sctp_lookup_association(net, laddr, paddr, transportp);
+ if (asoc)
+ goto out;
/* Further lookup for INIT/INIT-ACK packets.
* SCTP Implementors Guide, 2.18 Handling of address
* parameters within the INIT or INIT-ACK.
*/
- if (!asoc)
- asoc = __sctp_rcv_lookup_harder(net, skb, laddr, transportp);
+ asoc = __sctp_rcv_lookup_harder(net, skb, laddr, transportp);
+ if (asoc)
+ goto out;
+ if (paddr->sa.sa_family == AF_INET)
+ pr_debug("sctp: asoc not found for src:%pI4:%d dst:%pI4:%d\n",
+ &laddr->v4.sin_addr, ntohs(laddr->v4.sin_port),
+ &paddr->v4.sin_addr, ntohs(paddr->v4.sin_port));
+ else
+ pr_debug("sctp: asoc not found for src:%pI6:%d dst:%pI6:%d\n",
+ &laddr->v6.sin6_addr, ntohs(laddr->v6.sin6_port),
+ &paddr->v6.sin6_addr, ntohs(paddr->v6.sin6_port));
+
+out:
return asoc;
}
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 176af3080a2b..961ee59f696a 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -71,7 +71,7 @@
#include <net/inet_ecn.h>
#include <net/sctp/sctp.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
static inline int sctp_v6_addr_match_len(union sctp_addr *s1,
union sctp_addr *s2);
@@ -222,7 +222,8 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
SCTP_INC_STATS(sock_net(sk), SCTP_MIB_OUTSCTPPACKS);
rcu_read_lock();
- res = ip6_xmit(sk, skb, fl6, rcu_dereference(np->opt), np->tclass);
+ res = ip6_xmit(sk, skb, fl6, sk->sk_mark, rcu_dereference(np->opt),
+ np->tclass);
rcu_read_unlock();
return res;
}
@@ -412,22 +413,20 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
static void sctp_v6_from_skb(union sctp_addr *addr, struct sk_buff *skb,
int is_saddr)
{
- __be16 *port;
- struct sctphdr *sh;
+ /* Always called on head skb, so this is safe */
+ struct sctphdr *sh = sctp_hdr(skb);
+ struct sockaddr_in6 *sa = &addr->v6;
- port = &addr->v6.sin6_port;
addr->v6.sin6_family = AF_INET6;
addr->v6.sin6_flowinfo = 0; /* FIXME */
addr->v6.sin6_scope_id = ((struct inet6_skb_parm *)skb->cb)->iif;
- /* Always called on head skb, so this is safe */
- sh = sctp_hdr(skb);
if (is_saddr) {
- *port = sh->source;
- addr->v6.sin6_addr = ipv6_hdr(skb)->saddr;
+ sa->sin6_port = sh->source;
+ sa->sin6_addr = ipv6_hdr(skb)->saddr;
} else {
- *port = sh->dest;
- addr->v6.sin6_addr = ipv6_hdr(skb)->daddr;
+ sa->sin6_port = sh->dest;
+ sa->sin6_addr = ipv6_hdr(skb)->daddr;
}
}
@@ -641,14 +640,15 @@ static sctp_scope_t sctp_v6_scope(union sctp_addr *addr)
/* Create and initialize a new sk for the socket to be returned by accept(). */
static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
- struct sctp_association *asoc)
+ struct sctp_association *asoc,
+ bool kern)
{
struct sock *newsk;
struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
struct sctp6_sock *newsctp6sk;
struct ipv6_txoptions *opt;
- newsk = sk_alloc(sock_net(sk), PF_INET6, GFP_KERNEL, sk->sk_prot, 0);
+ newsk = sk_alloc(sock_net(sk), PF_INET6, GFP_KERNEL, sk->sk_prot, kern);
if (!newsk)
goto out;
diff --git a/net/sctp/objcnt.c b/net/sctp/objcnt.c
index 40e7fac96c41..105ac3327b28 100644
--- a/net/sctp/objcnt.c
+++ b/net/sctp/objcnt.c
@@ -51,7 +51,6 @@ SCTP_DBG_OBJCNT(bind_addr);
SCTP_DBG_OBJCNT(bind_bucket);
SCTP_DBG_OBJCNT(chunk);
SCTP_DBG_OBJCNT(addr);
-SCTP_DBG_OBJCNT(ssnmap);
SCTP_DBG_OBJCNT(datamsg);
SCTP_DBG_OBJCNT(keys);
@@ -67,7 +66,6 @@ static sctp_dbg_objcnt_entry_t sctp_dbg_objcnt[] = {
SCTP_DBG_OBJCNT_ENTRY(bind_addr),
SCTP_DBG_OBJCNT_ENTRY(bind_bucket),
SCTP_DBG_OBJCNT_ENTRY(addr),
- SCTP_DBG_OBJCNT_ENTRY(ssnmap),
SCTP_DBG_OBJCNT_ENTRY(datamsg),
SCTP_DBG_OBJCNT_ENTRY(keys),
};
diff --git a/net/sctp/offload.c b/net/sctp/offload.c
index 7e869d0cca69..4f5a2b580aa5 100644
--- a/net/sctp/offload.c
+++ b/net/sctp/offload.c
@@ -68,7 +68,7 @@ static struct sk_buff *sctp_gso_segment(struct sk_buff *skb,
goto out;
}
- segs = skb_segment(skb, features | NETIF_F_HW_CSUM);
+ segs = skb_segment(skb, features | NETIF_F_HW_CSUM | NETIF_F_SG);
if (IS_ERR(segs))
goto out;
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 6cb0df859195..1409a875ad8e 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -81,56 +81,64 @@ static void sctp_packet_reset(struct sctp_packet *packet)
/* Config a packet.
* This appears to be a followup set of initializations.
*/
-struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
- __u32 vtag, int ecn_capable)
+void sctp_packet_config(struct sctp_packet *packet, __u32 vtag,
+ int ecn_capable)
{
struct sctp_transport *tp = packet->transport;
struct sctp_association *asoc = tp->asoc;
+ struct sock *sk;
pr_debug("%s: packet:%p vtag:0x%x\n", __func__, packet, vtag);
-
packet->vtag = vtag;
- if (asoc && tp->dst) {
- struct sock *sk = asoc->base.sk;
-
- rcu_read_lock();
- if (__sk_dst_get(sk) != tp->dst) {
- dst_hold(tp->dst);
- sk_setup_caps(sk, tp->dst);
- }
-
- if (sk_can_gso(sk)) {
- struct net_device *dev = tp->dst->dev;
+ /* do the following jobs only once for a flush schedule */
+ if (!sctp_packet_empty(packet))
+ return;
- packet->max_size = dev->gso_max_size;
- } else {
- packet->max_size = asoc->pathmtu;
- }
- rcu_read_unlock();
+ /* set packet max_size with pathmtu */
+ packet->max_size = tp->pathmtu;
+ if (!asoc)
+ return;
- } else {
- packet->max_size = tp->pathmtu;
+ /* update dst or transport pathmtu if in need */
+ sk = asoc->base.sk;
+ if (!sctp_transport_dst_check(tp)) {
+ sctp_transport_route(tp, NULL, sctp_sk(sk));
+ if (asoc->param_flags & SPP_PMTUD_ENABLE)
+ sctp_assoc_sync_pmtu(asoc);
+ } else if (!sctp_transport_pmtu_check(tp)) {
+ if (asoc->param_flags & SPP_PMTUD_ENABLE)
+ sctp_assoc_sync_pmtu(asoc);
}
- if (ecn_capable && sctp_packet_empty(packet)) {
- struct sctp_chunk *chunk;
+ /* If there a is a prepend chunk stick it on the list before
+ * any other chunks get appended.
+ */
+ if (ecn_capable) {
+ struct sctp_chunk *chunk = sctp_get_ecne_prepend(asoc);
- /* If there a is a prepend chunk stick it on the list before
- * any other chunks get appended.
- */
- chunk = sctp_get_ecne_prepend(asoc);
if (chunk)
sctp_packet_append_chunk(packet, chunk);
}
- return packet;
+ if (!tp->dst)
+ return;
+
+ /* set packet max_size with gso_max_size if gso is enabled*/
+ rcu_read_lock();
+ if (__sk_dst_get(sk) != tp->dst) {
+ dst_hold(tp->dst);
+ sk_setup_caps(sk, tp->dst);
+ }
+ packet->max_size = sk_can_gso(sk) ? tp->dst->dev->gso_max_size
+ : asoc->pathmtu;
+ rcu_read_unlock();
}
/* Initialize the packet structure. */
-struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
- struct sctp_transport *transport,
- __u16 sport, __u16 dport)
+void sctp_packet_init(struct sctp_packet *packet,
+ struct sctp_transport *transport,
+ __u16 sport, __u16 dport)
{
struct sctp_association *asoc = transport->asoc;
size_t overhead;
@@ -151,8 +159,6 @@ struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
packet->overhead = overhead;
sctp_packet_reset(packet);
packet->vtag = 0;
-
- return packet;
}
/* Free a packet. */
@@ -181,7 +187,7 @@ sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *packet,
{
sctp_xmit_t retval;
- pr_debug("%s: packet:%p size:%Zu chunk:%p size:%d\n", __func__,
+ pr_debug("%s: packet:%p size:%zu chunk:%p size:%d\n", __func__,
packet, packet->size, chunk, chunk->skb ? chunk->skb->len : -1);
switch ((retval = (sctp_packet_append_chunk(packet, chunk)))) {
@@ -399,186 +405,72 @@ static void sctp_packet_set_owner_w(struct sk_buff *skb, struct sock *sk)
atomic_inc(&sk->sk_wmem_alloc);
}
-/* All packets are sent to the network through this function from
- * sctp_outq_tail().
- *
- * The return value is a normal kernel error return value.
- */
-int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
+static int sctp_packet_pack(struct sctp_packet *packet,
+ struct sk_buff *head, int gso, gfp_t gfp)
{
struct sctp_transport *tp = packet->transport;
- struct sctp_association *asoc = tp->asoc;
- struct sctphdr *sh;
- struct sk_buff *nskb = NULL, *head = NULL;
+ struct sctp_auth_chunk *auth = NULL;
struct sctp_chunk *chunk, *tmp;
- struct sock *sk;
- int err = 0;
- int padding; /* How much padding do we need? */
- int pkt_size;
- __u8 has_data = 0;
- int gso = 0;
- int pktcount = 0;
+ int pkt_count = 0, pkt_size;
+ struct sock *sk = head->sk;
+ struct sk_buff *nskb;
int auth_len = 0;
- struct dst_entry *dst;
- unsigned char *auth = NULL; /* pointer to auth in skb data */
-
- pr_debug("%s: packet:%p\n", __func__, packet);
-
- /* Do NOT generate a chunkless packet. */
- if (list_empty(&packet->chunk_list))
- return err;
- /* Set up convenience variables... */
- chunk = list_entry(packet->chunk_list.next, struct sctp_chunk, list);
- sk = chunk->skb->sk;
-
- /* Allocate the head skb, or main one if not in GSO */
- if (packet->size > tp->pathmtu && !packet->ipfragok) {
- if (sk_can_gso(sk)) {
- gso = 1;
- pkt_size = packet->overhead;
- } else {
- /* If this happens, we trash this packet and try
- * to build a new one, hopefully correct this
- * time. Application may notice this error.
- */
- pr_err_once("Trying to GSO but underlying device doesn't support it.");
- goto err;
- }
- } else {
- pkt_size = packet->size;
- }
- head = alloc_skb(pkt_size + MAX_HEADER, gfp);
- if (!head)
- goto err;
if (gso) {
- NAPI_GRO_CB(head)->last = head;
skb_shinfo(head)->gso_type = sk->sk_gso_type;
+ NAPI_GRO_CB(head)->last = head;
+ } else {
+ nskb = head;
+ pkt_size = packet->size;
+ goto merge;
}
- /* Make sure the outbound skb has enough header room reserved. */
- skb_reserve(head, packet->overhead + MAX_HEADER);
-
- /* Set the owning socket so that we know where to get the
- * destination IP address.
- */
- sctp_packet_set_owner_w(head, sk);
-
- 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(sk, asoc);
- }
- }
- dst = dst_clone(tp->dst);
- if (!dst) {
- if (asoc)
- IP_INC_STATS(sock_net(asoc->base.sk),
- IPSTATS_MIB_OUTNOROUTES);
- goto nodst;
- }
- skb_dst_set(head, dst);
-
- /* Build the SCTP header. */
- sh = (struct sctphdr *)skb_push(head, sizeof(struct sctphdr));
- skb_reset_transport_header(head);
- sh->source = htons(packet->source_port);
- sh->dest = htons(packet->destination_port);
-
- /* From 6.8 Adler-32 Checksum Calculation:
- * After the packet is constructed (containing the SCTP common
- * header and one or more control or DATA chunks), the
- * transmitter shall:
- *
- * 1) Fill in the proper Verification Tag in the SCTP common
- * header and initialize the checksum field to 0's.
- */
- sh->vtag = htonl(packet->vtag);
- sh->checksum = 0;
-
- pr_debug("***sctp_transmit_packet***\n");
-
do {
- /* Set up convenience variables... */
- chunk = list_entry(packet->chunk_list.next, struct sctp_chunk, list);
- pktcount++;
+ /* calculate the pkt_size and alloc nskb */
+ pkt_size = packet->overhead;
+ list_for_each_entry_safe(chunk, tmp, &packet->chunk_list,
+ list) {
+ int padded = SCTP_PAD4(chunk->skb->len);
- /* Calculate packet size, so it fits in PMTU. Leave
- * other chunks for the next packets.
- */
- if (gso) {
- pkt_size = packet->overhead;
- list_for_each_entry(chunk, &packet->chunk_list, list) {
- int padded = SCTP_PAD4(chunk->skb->len);
-
- if (chunk == packet->auth)
- auth_len = padded;
- else if (auth_len + padded + packet->overhead >
- tp->pathmtu)
- goto nomem;
- else if (pkt_size + padded > tp->pathmtu)
- break;
- pkt_size += padded;
- }
-
- /* Allocate a new skb. */
- nskb = alloc_skb(pkt_size + MAX_HEADER, gfp);
- if (!nskb)
- goto nomem;
-
- /* Make sure the outbound skb has enough header
- * room reserved.
- */
- skb_reserve(nskb, packet->overhead + MAX_HEADER);
- } else {
- nskb = head;
+ if (chunk == packet->auth)
+ auth_len = padded;
+ else if (auth_len + padded + packet->overhead >
+ tp->pathmtu)
+ return 0;
+ else if (pkt_size + padded > tp->pathmtu)
+ break;
+ pkt_size += padded;
}
+ nskb = alloc_skb(pkt_size + MAX_HEADER, gfp);
+ if (!nskb)
+ return 0;
+ skb_reserve(nskb, packet->overhead + MAX_HEADER);
- /**
- * 3.2 Chunk Field Descriptions
- *
- * The total length of a chunk (including Type, Length and
- * Value fields) MUST be a multiple of 4 bytes. If the length
- * of the chunk is not a multiple of 4 bytes, the sender MUST
- * pad the chunk with all zero bytes and this padding is not
- * included in the chunk length field. The sender should
- * never pad with more than 3 bytes.
- *
- * [This whole comment explains SCTP_PAD4() below.]
- */
-
+merge:
+ /* merge chunks into nskb and append nskb into head list */
pkt_size -= packet->overhead;
list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) {
+ int padding;
+
list_del_init(&chunk->list);
if (sctp_chunk_is_data(chunk)) {
- /* 6.3.1 C4) When data is in flight and when allowed
- * by rule C5, a new RTT measurement MUST be made each
- * round trip. Furthermore, new RTT measurements
- * SHOULD be made no more than once per round-trip
- * for a given destination transport address.
- */
-
- if (!chunk->resent && !tp->rto_pending) {
+ if (!sctp_chunk_retransmitted(chunk) &&
+ !tp->rto_pending) {
chunk->rtt_in_progress = 1;
tp->rto_pending = 1;
}
-
- has_data = 1;
}
padding = SCTP_PAD4(chunk->skb->len) - chunk->skb->len;
if (padding)
memset(skb_put(chunk->skb, padding), 0, padding);
- /* if this is the auth chunk that we are adding,
- * store pointer where it will be added and put
- * the auth into the packet.
- */
if (chunk == packet->auth)
- auth = skb_tail_pointer(nskb);
+ auth = (struct sctp_auth_chunk *)
+ skb_tail_pointer(nskb);
- memcpy(skb_put(nskb, chunk->skb->len),
- chunk->skb->data, chunk->skb->len);
+ memcpy(skb_put(nskb, chunk->skb->len), chunk->skb->data,
+ chunk->skb->len);
pr_debug("*** Chunk:%p[%s] %s 0x%x, length:%d, chunk->skb->len:%d, rtt_in_progress:%d\n",
chunk,
@@ -588,11 +480,6 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
ntohs(chunk->chunk_hdr->length), chunk->skb->len,
chunk->rtt_in_progress);
- /* If this is a control chunk, this is our last
- * reference. Free data chunks after they've been
- * acknowledged or have failed.
- * Re-queue auth chunks if needed.
- */
pkt_size -= SCTP_PAD4(chunk->skb->len);
if (!sctp_chunk_is_data(chunk) && chunk != packet->auth)
@@ -602,160 +489,163 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
break;
}
- /* SCTP-AUTH, Section 6.2
- * The sender MUST calculate the MAC as described in RFC2104 [2]
- * using the hash function H as described by the MAC Identifier and
- * the shared association key K based on the endpoint pair shared key
- * described by the shared key identifier. The 'data' used for the
- * computation of the AUTH-chunk is given by the AUTH chunk with its
- * HMAC field set to zero (as shown in Figure 6) followed by all
- * chunks that are placed after the AUTH chunk in the SCTP packet.
- */
- if (auth)
- sctp_auth_calculate_hmac(asoc, nskb,
- (struct sctp_auth_chunk *)auth,
- gfp);
-
- if (packet->auth) {
- if (!list_empty(&packet->chunk_list)) {
- /* We will generate more packets, so re-queue
- * auth chunk.
- */
+ if (auth) {
+ sctp_auth_calculate_hmac(tp->asoc, nskb, auth, gfp);
+ /* free auth if no more chunks, or add it back */
+ if (list_empty(&packet->chunk_list))
+ sctp_chunk_free(packet->auth);
+ else
list_add(&packet->auth->list,
&packet->chunk_list);
- } else {
- sctp_chunk_free(packet->auth);
- packet->auth = NULL;
- }
}
- if (!gso)
- break;
-
- if (skb_gro_receive(&head, nskb)) {
- kfree_skb(nskb);
- goto nomem;
+ if (gso) {
+ if (skb_gro_receive(&head, nskb)) {
+ kfree_skb(nskb);
+ return 0;
+ }
+ if (WARN_ON_ONCE(skb_shinfo(head)->gso_segs >=
+ sk->sk_gso_max_segs))
+ return 0;
}
- nskb = NULL;
- if (WARN_ON_ONCE(skb_shinfo(head)->gso_segs >=
- sk->sk_gso_max_segs))
- goto nomem;
+
+ pkt_count++;
} while (!list_empty(&packet->chunk_list));
- /* 2) Calculate the Adler-32 checksum of the whole packet,
- * including the SCTP common header and all the
- * chunks.
- *
- * Note: Adler-32 is no longer applicable, as has been replaced
- * by CRC32-C as described in <draft-ietf-tsvwg-sctpcsum-02.txt>.
- *
- * If it's a GSO packet, it's postponed to sctp_skb_segment.
- */
- if (!sctp_checksum_disable || gso) {
- if (!gso && (!(dst->dev->features & NETIF_F_SCTP_CRC) ||
- dst_xfrm(dst) || packet->ipfragok)) {
- sh->checksum = sctp_compute_cksum(head, 0);
- } else {
- /* no need to seed pseudo checksum for SCTP */
- head->ip_summed = CHECKSUM_PARTIAL;
- head->csum_start = skb_transport_header(head) - head->head;
- head->csum_offset = offsetof(struct sctphdr, checksum);
+ if (gso) {
+ memset(head->cb, 0, max(sizeof(struct inet_skb_parm),
+ sizeof(struct inet6_skb_parm)));
+ skb_shinfo(head)->gso_segs = pkt_count;
+ skb_shinfo(head)->gso_size = GSO_BY_FRAGS;
+ rcu_read_lock();
+ if (skb_dst(head) != tp->dst) {
+ dst_hold(tp->dst);
+ sk_setup_caps(sk, tp->dst);
}
+ rcu_read_unlock();
+ goto chksum;
}
- /* IP layer ECN support
- * From RFC 2481
- * "The ECN-Capable Transport (ECT) bit would be set by the
- * data sender to indicate that the end-points of the
- * transport protocol are ECN-capable."
- *
- * Now setting the ECT bit all the time, as it should not cause
- * any problems protocol-wise even if our peer ignores it.
- *
- * Note: The works for IPv6 layer checks this bit too later
- * in transmission. See IP6_ECN_flow_xmit().
- */
- tp->af_specific->ecn_capable(sk);
+ if (sctp_checksum_disable)
+ return 1;
- /* Set up the IP options. */
- /* BUG: not implemented
- * For v4 this all lives somewhere in sk->sk_opt...
- */
+ if (!(skb_dst(head)->dev->features & NETIF_F_SCTP_CRC) ||
+ dst_xfrm(skb_dst(head)) || packet->ipfragok) {
+ struct sctphdr *sh =
+ (struct sctphdr *)skb_transport_header(head);
- /* Dump that on IP! */
- if (asoc) {
- asoc->stats.opackets += pktcount;
- if (asoc->peer.last_sent_to != tp)
- /* Considering the multiple CPU scenario, this is a
- * "correcter" place for last_sent_to. --xguo
- */
- asoc->peer.last_sent_to = tp;
+ sh->checksum = sctp_compute_cksum(head, 0);
+ } else {
+chksum:
+ head->ip_summed = CHECKSUM_PARTIAL;
+ head->csum_start = skb_transport_header(head) - head->head;
+ head->csum_offset = offsetof(struct sctphdr, checksum);
}
- if (has_data) {
- struct timer_list *timer;
- unsigned long timeout;
+ return pkt_count;
+}
- /* Restart the AUTOCLOSE timer when sending data. */
- if (sctp_state(asoc, ESTABLISHED) &&
- asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE]) {
- timer = &asoc->timers[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
- timeout = asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
+/* All packets are sent to the network through this function from
+ * sctp_outq_tail().
+ *
+ * The return value is always 0 for now.
+ */
+int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
+{
+ struct sctp_transport *tp = packet->transport;
+ struct sctp_association *asoc = tp->asoc;
+ struct sctp_chunk *chunk, *tmp;
+ int pkt_count, gso = 0;
+ struct dst_entry *dst;
+ struct sk_buff *head;
+ struct sctphdr *sh;
+ struct sock *sk;
+
+ pr_debug("%s: packet:%p\n", __func__, packet);
+ if (list_empty(&packet->chunk_list))
+ return 0;
+ chunk = list_entry(packet->chunk_list.next, struct sctp_chunk, list);
+ sk = chunk->skb->sk;
- if (!mod_timer(timer, jiffies + timeout))
- sctp_association_hold(asoc);
+ /* check gso */
+ if (packet->size > tp->pathmtu && !packet->ipfragok) {
+ if (!sk_can_gso(sk)) {
+ pr_err_once("Trying to GSO but underlying device doesn't support it.");
+ goto out;
}
+ gso = 1;
+ }
+
+ /* alloc head skb */
+ head = alloc_skb((gso ? packet->overhead : packet->size) +
+ MAX_HEADER, gfp);
+ if (!head)
+ goto out;
+ skb_reserve(head, packet->overhead + MAX_HEADER);
+ sctp_packet_set_owner_w(head, sk);
+
+ /* set sctp header */
+ sh = (struct sctphdr *)skb_push(head, sizeof(struct sctphdr));
+ skb_reset_transport_header(head);
+ sh->source = htons(packet->source_port);
+ sh->dest = htons(packet->destination_port);
+ sh->vtag = htonl(packet->vtag);
+ sh->checksum = 0;
+
+ /* drop packet if no dst */
+ dst = dst_clone(tp->dst);
+ if (!dst) {
+ IP_INC_STATS(sock_net(sk), IPSTATS_MIB_OUTNOROUTES);
+ kfree_skb(head);
+ goto out;
}
+ skb_dst_set(head, dst);
+ /* pack up chunks */
+ pkt_count = sctp_packet_pack(packet, head, gso, gfp);
+ if (!pkt_count) {
+ kfree_skb(head);
+ goto out;
+ }
pr_debug("***sctp_transmit_packet*** skb->len:%d\n", head->len);
- if (gso) {
- /* Cleanup our debris for IP stacks */
- memset(head->cb, 0, max(sizeof(struct inet_skb_parm),
- sizeof(struct inet6_skb_parm)));
+ /* start autoclose timer */
+ if (packet->has_data && sctp_state(asoc, ESTABLISHED) &&
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE]) {
+ struct timer_list *timer =
+ &asoc->timers[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
+ unsigned long timeout =
+ asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
- skb_shinfo(head)->gso_segs = pktcount;
- skb_shinfo(head)->gso_size = GSO_BY_FRAGS;
+ if (!mod_timer(timer, jiffies + timeout))
+ sctp_association_hold(asoc);
+ }
- /* We have to refresh this in case we are xmiting to
- * more than one transport at a time
- */
- rcu_read_lock();
- if (__sk_dst_get(sk) != tp->dst) {
- dst_hold(tp->dst);
- sk_setup_caps(sk, tp->dst);
- }
- rcu_read_unlock();
+ /* sctp xmit */
+ tp->af_specific->ecn_capable(sk);
+ if (asoc) {
+ asoc->stats.opackets += pkt_count;
+ if (asoc->peer.last_sent_to != tp)
+ asoc->peer.last_sent_to = tp;
}
head->ignore_df = packet->ipfragok;
- tp->af_specific->sctp_xmit(head, tp);
- goto out;
-
-nomem:
- if (packet->auth && list_empty(&packet->auth->list))
- sctp_chunk_free(packet->auth);
-
-nodst:
- /* FIXME: Returning the 'err' will effect all the associations
- * associated with a socket, although only one of the paths of the
- * association is unreachable.
- * The real failure of a transport or association can be passed on
- * to the user via notifications. So setting this error may not be
- * required.
+ if (tp->dst_pending_confirm)
+ skb_set_dst_pending_confirm(head, 1);
+ /* neighbour should be confirmed on successful transmission or
+ * positive error
*/
- /* err = -EHOSTUNREACH; */
- kfree_skb(head);
+ if (tp->af_specific->sctp_xmit(head, tp) >= 0 &&
+ tp->dst_pending_confirm)
+ tp->dst_pending_confirm = 0;
-err:
+out:
list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) {
list_del_init(&chunk->list);
if (!sctp_chunk_is_data(chunk))
sctp_chunk_free(chunk);
}
-
-out:
sctp_packet_reset(packet);
- return err;
+ return 0;
}
/********************************************************************
@@ -818,18 +708,15 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
* unacknowledged.
*/
- if (sctp_sk(asoc->base.sk)->nodelay)
- /* Nagle disabled */
+ if ((sctp_sk(asoc->base.sk)->nodelay || inflight == 0) &&
+ !asoc->force_delay)
+ /* Nothing unacked */
return SCTP_XMIT_OK;
if (!sctp_packet_empty(packet))
/* Append to packet */
return SCTP_XMIT_OK;
- if (inflight == 0)
- /* Nothing unacked */
- return SCTP_XMIT_OK;
-
if (!sctp_state(asoc, ESTABLISHED))
return SCTP_XMIT_OK;
@@ -871,9 +758,6 @@ static void sctp_packet_append_data(struct sctp_packet *packet,
rwnd = 0;
asoc->peer.rwnd = rwnd;
- /* Has been accepted for transmission. */
- if (!asoc->peer.prsctp_capable)
- chunk->msg->can_abandon = 0;
sctp_chunk_assign_tsn(chunk);
sctp_chunk_assign_ssn(chunk);
}
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 582585393d35..8081476ed313 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -382,17 +382,18 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc,
}
static int sctp_prsctp_prune_unsent(struct sctp_association *asoc,
- struct sctp_sndrcvinfo *sinfo,
- struct list_head *queue, int msg_len)
+ struct sctp_sndrcvinfo *sinfo, int msg_len)
{
+ struct sctp_outq *q = &asoc->outqueue;
struct sctp_chunk *chk, *temp;
- list_for_each_entry_safe(chk, temp, queue, list) {
+ list_for_each_entry_safe(chk, temp, &q->out_chunk_list, list) {
if (!SCTP_PR_PRIO_ENABLED(chk->sinfo.sinfo_flags) ||
chk->sinfo.sinfo_timetolive <= sinfo->sinfo_timetolive)
continue;
list_del_init(&chk->list);
+ q->out_qlen -= chk->skb->len;
asoc->sent_cnt_removable--;
asoc->abandoned_unsent[SCTP_PR_INDEX(PRIO)]++;
@@ -431,9 +432,7 @@ void sctp_prsctp_prune(struct sctp_association *asoc,
return;
}
- sctp_prsctp_prune_unsent(asoc, sinfo,
- &asoc->outqueue.out_chunk_list,
- msg_len);
+ sctp_prsctp_prune_unsent(asoc, sinfo, msg_len);
}
/* Mark all the eligible packets on a transport for retransmission. */
@@ -507,8 +506,6 @@ void sctp_retransmit_mark(struct sctp_outq *q,
transport->rto_pending = 0;
}
- chunk->resent = 1;
-
/* Move the chunk to the retransmit queue. The chunks
* on the retransmit queue are always kept in order.
*/
@@ -917,22 +914,28 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
case SCTP_CID_ECN_ECNE:
case SCTP_CID_ASCONF:
case SCTP_CID_FWD_TSN:
+ case SCTP_CID_RECONF:
status = sctp_packet_transmit_chunk(packet, chunk,
one_packet, gfp);
if (status != SCTP_XMIT_OK) {
/* put the chunk back */
list_add(&chunk->list, &q->control_chunk_list);
- } else {
- asoc->stats.octrlchunks++;
- /* PR-SCTP C5) If a FORWARD TSN is sent, the
- * sender MUST assure that at least one T3-rtx
- * timer is running.
- */
- if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) {
- sctp_transport_reset_t3_rtx(transport);
- transport->last_time_sent = jiffies;
- }
+ break;
}
+
+ asoc->stats.octrlchunks++;
+ /* PR-SCTP C5) If a FORWARD TSN is sent, the
+ * sender MUST assure that at least one T3-rtx
+ * timer is running.
+ */
+ if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) {
+ sctp_transport_reset_t3_rtx(transport);
+ transport->last_time_sent = jiffies;
+ }
+
+ if (chunk == asoc->strreset_chunk)
+ sctp_transport_reset_reconf_timer(transport);
+
break;
default:
@@ -1018,11 +1021,12 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
/* Finally, transmit new packets. */
while ((chunk = sctp_outq_dequeue_data(q)) != NULL) {
+ __u32 sid = ntohs(chunk->subh.data_hdr->stream);
+
/* RFC 2960 6.5 Every DATA chunk MUST carry a valid
* stream identifier.
*/
- if (chunk->sinfo.sinfo_stream >=
- asoc->c.sinit_num_ostreams) {
+ if (chunk->sinfo.sinfo_stream >= asoc->stream->outcnt) {
/* Mark as failed send. */
sctp_chunk_fail(chunk, SCTP_ERROR_INV_STRM);
@@ -1040,6 +1044,11 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
continue;
}
+ if (asoc->stream->out[sid].state == SCTP_STREAM_CLOSED) {
+ sctp_outq_head_data(q, chunk);
+ goto sctp_flush_out;
+ }
+
/* If there is a specified transport, use it.
* Otherwise, we want to use the active path.
*/
@@ -1050,7 +1059,7 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
(new_transport->state == SCTP_PF)))
new_transport = asoc->peer.active_path;
if (new_transport->state == SCTP_UNCONFIRMED) {
- WARN_ONCE(1, "Atempt to send packet on unconfirmed path.");
+ WARN_ONCE(1, "Attempt to send packet on unconfirmed path.");
sctp_chunk_fail(chunk, 0);
sctp_chunk_free(chunk);
continue;
@@ -1439,7 +1448,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
* instance).
*/
if (!tchunk->tsn_gap_acked &&
- !tchunk->resent &&
+ !sctp_chunk_retransmitted(tchunk) &&
tchunk->rtt_in_progress) {
tchunk->rtt_in_progress = 0;
rtt = jiffies - tchunk->sent_at;
@@ -1643,7 +1652,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
if (forward_progress) {
if (transport->dst)
- dst_confirm(transport->dst);
+ sctp_transport_dst_confirm(transport);
}
}
diff --git a/net/sctp/primitive.c b/net/sctp/primitive.c
index ab8d9f96a177..f0553a022859 100644
--- a/net/sctp/primitive.c
+++ b/net/sctp/primitive.c
@@ -211,3 +211,6 @@ DECLARE_PRIMITIVE(REQUESTHEARTBEAT);
*/
DECLARE_PRIMITIVE(ASCONF);
+
+/* RE-CONFIG 5.1 */
+DECLARE_PRIMITIVE(RECONF);
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 206377fe91ec..a0b29d43627f 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -361,8 +361,8 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
sctp_seq_dump_remote_addrs(seq, assoc);
seq_printf(seq, "\t%8lu %5d %5d %4d %4d %4d %8d "
"%8d %8d %8d %8d",
- assoc->hbinterval, assoc->c.sinit_max_instreams,
- assoc->c.sinit_num_ostreams, assoc->max_retrans,
+ assoc->hbinterval, assoc->stream->incnt,
+ assoc->stream->outcnt, assoc->max_retrans,
assoc->init_retries, assoc->shutdown_retries,
assoc->rtx_data_chunks,
atomic_read(&sk->sk_wmem_alloc),
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 7b523e3f551f..989a900383b5 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -199,32 +199,40 @@ int sctp_copy_local_addr_list(struct net *net, struct sctp_bind_addr *bp,
sctp_scope_t scope, gfp_t gfp, int copy_flags)
{
struct sctp_sockaddr_entry *addr;
+ union sctp_addr laddr;
int error = 0;
rcu_read_lock();
list_for_each_entry_rcu(addr, &net->sctp.local_addr_list, list) {
if (!addr->valid)
continue;
- if (sctp_in_scope(net, &addr->a, scope)) {
- /* Now that the address is in scope, check to see if
- * the address type is really supported by the local
- * sock as well as the remote peer.
- */
- if ((((AF_INET == addr->a.sa.sa_family) &&
- (copy_flags & SCTP_ADDR4_PEERSUPP))) ||
- (((AF_INET6 == addr->a.sa.sa_family) &&
- (copy_flags & SCTP_ADDR6_ALLOWED) &&
- (copy_flags & SCTP_ADDR6_PEERSUPP)))) {
- error = sctp_add_bind_addr(bp, &addr->a,
- sizeof(addr->a),
- SCTP_ADDR_SRC, GFP_ATOMIC);
- if (error)
- goto end_copy;
- }
- }
+ if (!sctp_in_scope(net, &addr->a, scope))
+ continue;
+
+ /* Now that the address is in scope, check to see if
+ * the address type is really supported by the local
+ * sock as well as the remote peer.
+ */
+ if (addr->a.sa.sa_family == AF_INET &&
+ !(copy_flags & SCTP_ADDR4_PEERSUPP))
+ continue;
+ if (addr->a.sa.sa_family == AF_INET6 &&
+ (!(copy_flags & SCTP_ADDR6_ALLOWED) ||
+ !(copy_flags & SCTP_ADDR6_PEERSUPP)))
+ continue;
+
+ laddr = addr->a;
+ /* also works for setting ipv6 address port */
+ laddr.v4.sin_port = htons(bp->port);
+ if (sctp_bind_addr_state(bp, &laddr) != -1)
+ continue;
+
+ error = sctp_add_bind_addr(bp, &addr->a, sizeof(addr->a),
+ SCTP_ADDR_SRC, GFP_ATOMIC);
+ if (error)
+ break;
}
-end_copy:
rcu_read_unlock();
return error;
}
@@ -233,23 +241,19 @@ end_copy:
static void sctp_v4_from_skb(union sctp_addr *addr, struct sk_buff *skb,
int is_saddr)
{
- void *from;
- __be16 *port;
- struct sctphdr *sh;
+ /* Always called on head skb, so this is safe */
+ struct sctphdr *sh = sctp_hdr(skb);
+ struct sockaddr_in *sa = &addr->v4;
- port = &addr->v4.sin_port;
addr->v4.sin_family = AF_INET;
- /* Always called on head skb, so this is safe */
- sh = sctp_hdr(skb);
if (is_saddr) {
- *port = sh->source;
- from = &ip_hdr(skb)->saddr;
+ sa->sin_port = sh->source;
+ sa->sin_addr.s_addr = ip_hdr(skb)->saddr;
} else {
- *port = sh->dest;
- from = &ip_hdr(skb)->daddr;
+ sa->sin_port = sh->dest;
+ sa->sin_addr.s_addr = ip_hdr(skb)->daddr;
}
- memcpy(&addr->v4.sin_addr.s_addr, from, sizeof(struct in_addr));
}
/* Initialize an sctp_addr from a socket. */
@@ -571,10 +575,11 @@ static int sctp_v4_is_ce(const struct sk_buff *skb)
/* Create and initialize a new sk for the socket returned by accept(). */
static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
- struct sctp_association *asoc)
+ struct sctp_association *asoc,
+ bool kern)
{
struct sock *newsk = sk_alloc(sock_net(sk), PF_INET, GFP_KERNEL,
- sk->sk_prot, 0);
+ sk->sk_prot, kern);
struct inet_sock *newinet;
if (!newsk)
@@ -1258,6 +1263,9 @@ static int __net_init sctp_defaults_init(struct net *net)
/* Enable PR-SCTP by default. */
net->sctp.prsctp_enable = 1;
+ /* Disable RECONF by default. */
+ net->sctp.reconf_enable = 0;
+
/* Disable AUTH by default. */
net->sctp.auth_enable = 0;
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 9e9690b7afe1..118faff6a332 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -270,6 +270,11 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
num_ext += 2;
}
+ if (asoc->reconf_enable) {
+ extensions[num_ext] = SCTP_CID_RECONF;
+ num_ext += 1;
+ }
+
if (sp->adaptation_ind)
chunksize += sizeof(aiparam);
@@ -434,6 +439,11 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
num_ext += 2;
}
+ if (asoc->peer.reconf_capable) {
+ extensions[num_ext] = SCTP_CID_RECONF;
+ num_ext += 1;
+ }
+
if (sp->adaptation_ind)
chunksize += sizeof(aiparam);
@@ -1536,7 +1546,7 @@ void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)
/* All fragments will be on the same stream */
sid = ntohs(chunk->subh.data_hdr->stream);
- stream = &chunk->asoc->ssnmap->out;
+ stream = chunk->asoc->stream;
/* Now assign the sequence number to the entire message.
* All fragments must have the same stream sequence number.
@@ -1547,9 +1557,9 @@ void sctp_chunk_assign_ssn(struct sctp_chunk *chunk)
ssn = 0;
} else {
if (lchunk->chunk_hdr->flags & SCTP_DATA_LAST_FRAG)
- ssn = sctp_ssn_next(stream, sid);
+ ssn = sctp_ssn_next(stream, out, sid);
else
- ssn = sctp_ssn_peek(stream, sid);
+ ssn = sctp_ssn_peek(stream, out, sid);
}
lchunk->subh.data_hdr->ssn = htons(ssn);
@@ -1844,6 +1854,7 @@ no_hmac:
retval->next_tsn = retval->c.initial_tsn;
retval->ctsn_ack_point = retval->next_tsn - 1;
retval->addip_serial = retval->c.initial_tsn;
+ retval->strreset_outseq = retval->c.initial_tsn;
retval->adv_peer_ack_point = retval->ctsn_ack_point;
retval->peer.prsctp_capable = retval->c.prsctp_capable;
retval->peer.adaptation_ind = retval->c.adaptation_ind;
@@ -2011,6 +2022,11 @@ static void sctp_process_ext_param(struct sctp_association *asoc,
for (i = 0; i < num_ext; i++) {
switch (param.ext->chunks[i]) {
+ case SCTP_CID_RECONF:
+ if (asoc->reconf_enable &&
+ !asoc->peer.reconf_capable)
+ asoc->peer.reconf_capable = 1;
+ break;
case SCTP_CID_FWD_TSN:
if (asoc->prsctp_enable && !asoc->peer.prsctp_capable)
asoc->peer.prsctp_capable = 1;
@@ -2387,6 +2403,8 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
asoc->peer.i.initial_tsn =
ntohl(peer_init->init_hdr.initial_tsn);
+ asoc->strreset_inseq = asoc->peer.i.initial_tsn;
+
/* Apply the upper bounds for output streams based on peer's
* number of inbound streams.
*/
@@ -2442,15 +2460,10 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
* association.
*/
if (!asoc->temp) {
- int error;
-
- asoc->ssnmap = sctp_ssnmap_new(asoc->c.sinit_max_instreams,
- asoc->c.sinit_num_ostreams, gfp);
- if (!asoc->ssnmap)
+ if (sctp_stream_init(asoc, gfp))
goto clean_up;
- error = sctp_assoc_set_id(asoc, gfp);
- if (error)
+ if (sctp_assoc_set_id(asoc, gfp))
goto clean_up;
}
@@ -3210,7 +3223,6 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
union sctp_params param;
sctp_addiphdr_t *hdr;
union sctp_addr_param *addr_param;
- sctp_addip_param_t *asconf_param;
struct sctp_chunk *asconf_ack;
__be16 err_code;
int length = 0;
@@ -3230,7 +3242,6 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
* asconf parameter.
*/
length = ntohs(addr_param->p.length);
- asconf_param = (void *)addr_param + length;
chunk_len -= length;
/* create an ASCONF_ACK chunk.
@@ -3317,8 +3328,7 @@ static void sctp_asconf_param_success(struct sctp_association *asoc,
local_bh_enable();
list_for_each_entry(transport, &asoc->peer.transport_addr_list,
transports) {
- dst_release(transport->dst);
- transport->dst = NULL;
+ sctp_transport_dst_release(transport);
}
break;
case SCTP_PARAM_DEL_IP:
@@ -3332,8 +3342,7 @@ static void sctp_asconf_param_success(struct sctp_association *asoc,
local_bh_enable();
list_for_each_entry(transport, &asoc->peer.transport_addr_list,
transports) {
- dst_release(transport->dst);
- transport->dst = NULL;
+ sctp_transport_dst_release(transport);
}
break;
default:
@@ -3526,3 +3535,323 @@ struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc,
return retval;
}
+
+/* RE-CONFIG 3.1 (RE-CONFIG chunk)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Type = 130 | Chunk Flags | Chunk Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * \ \
+ * / Re-configuration Parameter /
+ * \ \
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * \ \
+ * / Re-configuration Parameter (optional) /
+ * \ \
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+static struct sctp_chunk *sctp_make_reconf(
+ const struct sctp_association *asoc,
+ int length)
+{
+ struct sctp_reconf_chunk *reconf;
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_control(asoc, SCTP_CID_RECONF, 0, length,
+ GFP_ATOMIC);
+ if (!retval)
+ return NULL;
+
+ reconf = (struct sctp_reconf_chunk *)retval->chunk_hdr;
+ retval->param_hdr.v = reconf->params;
+
+ return retval;
+}
+
+/* RE-CONFIG 4.1 (STREAM OUT RESET)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 13 | Parameter Length = 16 + 2 * N |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Request Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Response Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Sender's Last Assigned TSN |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Number 1 (optional) | Stream Number 2 (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * / ...... /
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Number N-1 (optional) | Stream Number N (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * RE-CONFIG 4.2 (STREAM IN RESET)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 14 | Parameter Length = 8 + 2 * N |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Request Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Number 1 (optional) | Stream Number 2 (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * / ...... /
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Number N-1 (optional) | Stream Number N (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_req(
+ const struct sctp_association *asoc,
+ __u16 stream_num, __u16 *stream_list,
+ bool out, bool in)
+{
+ struct sctp_strreset_outreq outreq;
+ __u16 stream_len = stream_num * 2;
+ struct sctp_strreset_inreq inreq;
+ struct sctp_chunk *retval;
+ __u16 outlen, inlen;
+
+ outlen = (sizeof(outreq) + stream_len) * out;
+ inlen = (sizeof(inreq) + stream_len) * in;
+
+ retval = sctp_make_reconf(asoc, outlen + inlen);
+ if (!retval)
+ return NULL;
+
+ if (outlen) {
+ outreq.param_hdr.type = SCTP_PARAM_RESET_OUT_REQUEST;
+ outreq.param_hdr.length = htons(outlen);
+ outreq.request_seq = htonl(asoc->strreset_outseq);
+ outreq.response_seq = htonl(asoc->strreset_inseq - 1);
+ outreq.send_reset_at_tsn = htonl(asoc->next_tsn - 1);
+
+ sctp_addto_chunk(retval, sizeof(outreq), &outreq);
+
+ if (stream_len)
+ sctp_addto_chunk(retval, stream_len, stream_list);
+ }
+
+ if (inlen) {
+ inreq.param_hdr.type = SCTP_PARAM_RESET_IN_REQUEST;
+ inreq.param_hdr.length = htons(inlen);
+ inreq.request_seq = htonl(asoc->strreset_outseq + out);
+
+ sctp_addto_chunk(retval, sizeof(inreq), &inreq);
+
+ if (stream_len)
+ sctp_addto_chunk(retval, stream_len, stream_list);
+ }
+
+ return retval;
+}
+
+/* RE-CONFIG 4.3 (SSN/TSN RESET ALL)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 15 | Parameter Length = 8 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Request Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_tsnreq(
+ const struct sctp_association *asoc)
+{
+ struct sctp_strreset_tsnreq tsnreq;
+ __u16 length = sizeof(tsnreq);
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_reconf(asoc, length);
+ if (!retval)
+ return NULL;
+
+ tsnreq.param_hdr.type = SCTP_PARAM_RESET_TSN_REQUEST;
+ tsnreq.param_hdr.length = htons(length);
+ tsnreq.request_seq = htonl(asoc->strreset_outseq);
+
+ sctp_addto_chunk(retval, sizeof(tsnreq), &tsnreq);
+
+ return retval;
+}
+
+/* RE-CONFIG 4.5/4.6 (ADD STREAM)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 17 | Parameter Length = 12 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Request Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Number of new streams | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_addstrm(
+ const struct sctp_association *asoc,
+ __u16 out, __u16 in)
+{
+ struct sctp_strreset_addstrm addstrm;
+ __u16 size = sizeof(addstrm);
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_reconf(asoc, (!!out + !!in) * size);
+ if (!retval)
+ return NULL;
+
+ if (out) {
+ addstrm.param_hdr.type = SCTP_PARAM_RESET_ADD_OUT_STREAMS;
+ addstrm.param_hdr.length = htons(size);
+ addstrm.number_of_streams = htons(out);
+ addstrm.request_seq = htonl(asoc->strreset_outseq);
+ addstrm.reserved = 0;
+
+ sctp_addto_chunk(retval, size, &addstrm);
+ }
+
+ if (in) {
+ addstrm.param_hdr.type = SCTP_PARAM_RESET_ADD_IN_STREAMS;
+ addstrm.param_hdr.length = htons(size);
+ addstrm.number_of_streams = htons(in);
+ addstrm.request_seq = htonl(asoc->strreset_outseq + !!out);
+ addstrm.reserved = 0;
+
+ sctp_addto_chunk(retval, size, &addstrm);
+ }
+
+ return retval;
+}
+
+/* RE-CONFIG 4.4 (RESP)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 16 | Parameter Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Response Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Result |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_resp(
+ const struct sctp_association *asoc,
+ __u32 result, __u32 sn)
+{
+ struct sctp_strreset_resp resp;
+ __u16 length = sizeof(resp);
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_reconf(asoc, length);
+ if (!retval)
+ return NULL;
+
+ resp.param_hdr.type = SCTP_PARAM_RESET_RESPONSE;
+ resp.param_hdr.length = htons(length);
+ resp.response_seq = htonl(sn);
+ resp.result = htonl(result);
+
+ sctp_addto_chunk(retval, sizeof(resp), &resp);
+
+ return retval;
+}
+
+/* RE-CONFIG 4.4 OPTIONAL (TSNRESP)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 16 | Parameter Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Response Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Result |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Sender's Next TSN (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Receiver's Next TSN (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_tsnresp(
+ struct sctp_association *asoc,
+ __u32 result, __u32 sn,
+ __u32 sender_tsn, __u32 receiver_tsn)
+{
+ struct sctp_strreset_resptsn tsnresp;
+ __u16 length = sizeof(tsnresp);
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_reconf(asoc, length);
+ if (!retval)
+ return NULL;
+
+ tsnresp.param_hdr.type = SCTP_PARAM_RESET_RESPONSE;
+ tsnresp.param_hdr.length = htons(length);
+
+ tsnresp.response_seq = htonl(sn);
+ tsnresp.result = htonl(result);
+ tsnresp.senders_next_tsn = htonl(sender_tsn);
+ tsnresp.receivers_next_tsn = htonl(receiver_tsn);
+
+ sctp_addto_chunk(retval, sizeof(tsnresp), &tsnresp);
+
+ return retval;
+}
+
+bool sctp_verify_reconf(const struct sctp_association *asoc,
+ struct sctp_chunk *chunk,
+ struct sctp_paramhdr **errp)
+{
+ struct sctp_reconf_chunk *hdr;
+ union sctp_params param;
+ __u16 last = 0, cnt = 0;
+
+ hdr = (struct sctp_reconf_chunk *)chunk->chunk_hdr;
+ sctp_walk_params(param, hdr, params) {
+ __u16 length = ntohs(param.p->length);
+
+ *errp = param.p;
+ if (cnt++ > 2)
+ return false;
+ switch (param.p->type) {
+ case SCTP_PARAM_RESET_OUT_REQUEST:
+ if (length < sizeof(struct sctp_strreset_outreq) ||
+ (last && last != SCTP_PARAM_RESET_RESPONSE &&
+ last != SCTP_PARAM_RESET_IN_REQUEST))
+ return false;
+ break;
+ case SCTP_PARAM_RESET_IN_REQUEST:
+ if (length < sizeof(struct sctp_strreset_inreq) ||
+ (last && last != SCTP_PARAM_RESET_OUT_REQUEST))
+ return false;
+ break;
+ case SCTP_PARAM_RESET_RESPONSE:
+ if ((length != sizeof(struct sctp_strreset_resp) &&
+ length != sizeof(struct sctp_strreset_resptsn)) ||
+ (last && last != SCTP_PARAM_RESET_RESPONSE &&
+ last != SCTP_PARAM_RESET_OUT_REQUEST))
+ return false;
+ break;
+ case SCTP_PARAM_RESET_TSN_REQUEST:
+ if (length !=
+ sizeof(struct sctp_strreset_tsnreq) || last)
+ return false;
+ break;
+ case SCTP_PARAM_RESET_ADD_IN_STREAMS:
+ if (length != sizeof(struct sctp_strreset_addstrm) ||
+ (last && last != SCTP_PARAM_RESET_ADD_OUT_STREAMS))
+ return false;
+ break;
+ case SCTP_PARAM_RESET_ADD_OUT_STREAMS:
+ if (length != sizeof(struct sctp_strreset_addstrm) ||
+ (last && last != SCTP_PARAM_RESET_ADD_IN_STREAMS))
+ return false;
+ break;
+ default:
+ return false;
+ }
+
+ last = param.p->type;
+ }
+
+ return true;
+}
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index c345bf153bed..25384fa82ba9 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -436,6 +436,37 @@ out_unlock:
sctp_association_put(asoc);
}
+ /* Handle the timeout of the RE-CONFIG timer. */
+void sctp_generate_reconf_event(unsigned long data)
+{
+ struct sctp_transport *transport = (struct sctp_transport *)data;
+ struct sctp_association *asoc = transport->asoc;
+ struct sock *sk = asoc->base.sk;
+ struct net *net = sock_net(sk);
+ int error = 0;
+
+ bh_lock_sock(sk);
+ if (sock_owned_by_user(sk)) {
+ pr_debug("%s: sock is busy\n", __func__);
+
+ /* Try again later. */
+ if (!mod_timer(&transport->reconf_timer, jiffies + (HZ / 20)))
+ sctp_transport_hold(transport);
+ goto out_unlock;
+ }
+
+ error = sctp_do_sm(net, SCTP_EVENT_T_TIMEOUT,
+ SCTP_ST_TIMEOUT(SCTP_EVENT_TIMEOUT_RECONF),
+ asoc->state, asoc->ep, asoc,
+ transport, GFP_ATOMIC);
+
+ if (error)
+ sk->sk_err = -error;
+
+out_unlock:
+ bh_unlock_sock(sk);
+ sctp_transport_put(transport);
+}
/* Inject a SACK Timeout event into the state machine. */
static void sctp_generate_sack_event(unsigned long data)
@@ -453,6 +484,7 @@ sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES] = {
sctp_generate_t4_rto_event,
sctp_generate_t5_shutdown_guard_event,
NULL,
+ NULL,
sctp_generate_sack_event,
sctp_generate_autoclose_event,
};
@@ -723,7 +755,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds,
* forward progress.
*/
if (t->dst)
- dst_confirm(t->dst);
+ sctp_transport_dst_confirm(t);
/* The receiver of the HEARTBEAT ACK should also perform an
* RTT measurement for that destination transport address
@@ -840,6 +872,10 @@ static void sctp_cmd_new_state(sctp_cmd_seq_t *cmds,
if (!sctp_style(sk, UDP))
sk->sk_state_change(sk);
}
+
+ if (sctp_state(asoc, SHUTDOWN_PENDING) &&
+ !sctp_outq_is_empty(&asoc->outqueue))
+ sctp_outq_uncork(&asoc->outqueue, GFP_ATOMIC);
}
/* Helper function to delete an association. */
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 8ec20a64a3f8..24c6ccce7539 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -160,23 +160,22 @@ static sctp_disposition_t __sctp_sf_do_9_1_abort(struct net *net,
/* Small helper function that checks if the chunk length
* is of the appropriate length. The 'required_length' argument
* is set to be the size of a specific chunk we are testing.
- * Return Values: 1 = Valid length
- * 0 = Invalid length
+ * Return Values: true = Valid length
+ * false = Invalid length
*
*/
-static inline int
-sctp_chunk_length_valid(struct sctp_chunk *chunk,
- __u16 required_length)
+static inline bool
+sctp_chunk_length_valid(struct sctp_chunk *chunk, __u16 required_length)
{
__u16 chunk_length = ntohs(chunk->chunk_hdr->length);
/* Previously already marked? */
if (unlikely(chunk->pdiscard))
- return 0;
+ return false;
if (unlikely(chunk_length < required_length))
- return 0;
+ return false;
- return 1;
+ return true;
}
/**********************************************************
@@ -1022,6 +1021,34 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(struct net *net,
return SCTP_DISPOSITION_CONSUME;
}
+/* resend asoc strreset_chunk. */
+sctp_disposition_t sctp_sf_send_reconf(struct net *net,
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type, void *arg,
+ sctp_cmd_seq_t *commands)
+{
+ struct sctp_transport *transport = arg;
+
+ if (asoc->overall_error_count >= asoc->max_retrans) {
+ sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
+ SCTP_ERROR(ETIMEDOUT));
+ /* CMD_ASSOC_FAILED calls CMD_DELETE_TCB. */
+ sctp_add_cmd_sf(commands, SCTP_CMD_ASSOC_FAILED,
+ SCTP_PERR(SCTP_ERROR_NO_ERROR));
+ SCTP_INC_STATS(net, SCTP_MIB_ABORTEDS);
+ SCTP_DEC_STATS(net, SCTP_MIB_CURRESTAB);
+ return SCTP_DISPOSITION_DELETE_TCB;
+ }
+
+ sctp_chunk_hold(asoc->strreset_chunk);
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
+ SCTP_CHUNK(asoc->strreset_chunk));
+ sctp_add_cmd_sf(commands, SCTP_CMD_STRIKE, SCTP_TRANSPORT(transport));
+
+ return SCTP_DISPOSITION_CONSUME;
+}
+
/*
* Process an heartbeat request.
*
@@ -3237,36 +3264,34 @@ static sctp_disposition_t sctp_sf_tabort_8_4_8(struct net *net,
struct sctp_chunk *abort;
packet = sctp_ootb_pkt_new(net, asoc, chunk);
+ if (!packet)
+ return SCTP_DISPOSITION_NOMEM;
- if (packet) {
- /* Make an ABORT. The T bit will be set if the asoc
- * is NULL.
- */
- abort = sctp_make_abort(asoc, chunk, 0);
- if (!abort) {
- sctp_ootb_pkt_free(packet);
- return SCTP_DISPOSITION_NOMEM;
- }
-
- /* Reflect vtag if T-Bit is set */
- if (sctp_test_T_bit(abort))
- packet->vtag = ntohl(chunk->sctp_hdr->vtag);
+ /* Make an ABORT. The T bit will be set if the asoc
+ * is NULL.
+ */
+ abort = sctp_make_abort(asoc, chunk, 0);
+ if (!abort) {
+ sctp_ootb_pkt_free(packet);
+ return SCTP_DISPOSITION_NOMEM;
+ }
- /* Set the skb to the belonging sock for accounting. */
- abort->skb->sk = ep->base.sk;
+ /* Reflect vtag if T-Bit is set */
+ if (sctp_test_T_bit(abort))
+ packet->vtag = ntohl(chunk->sctp_hdr->vtag);
- sctp_packet_append_chunk(packet, abort);
+ /* Set the skb to the belonging sock for accounting. */
+ abort->skb->sk = ep->base.sk;
- sctp_add_cmd_sf(commands, SCTP_CMD_SEND_PKT,
- SCTP_PACKET(packet));
+ sctp_packet_append_chunk(packet, abort);
- SCTP_INC_STATS(net, SCTP_MIB_OUTCTRLCHUNKS);
+ sctp_add_cmd_sf(commands, SCTP_CMD_SEND_PKT,
+ SCTP_PACKET(packet));
- sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
- return SCTP_DISPOSITION_CONSUME;
- }
+ SCTP_INC_STATS(net, SCTP_MIB_OUTCTRLCHUNKS);
- return SCTP_DISPOSITION_NOMEM;
+ sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+ return SCTP_DISPOSITION_CONSUME;
}
/*
@@ -3503,45 +3528,43 @@ static sctp_disposition_t sctp_sf_shut_8_4_5(struct net *net,
struct sctp_chunk *shut;
packet = sctp_ootb_pkt_new(net, asoc, chunk);
+ if (!packet)
+ return SCTP_DISPOSITION_NOMEM;
- if (packet) {
- /* Make an SHUTDOWN_COMPLETE.
- * The T bit will be set if the asoc is NULL.
- */
- shut = sctp_make_shutdown_complete(asoc, chunk);
- if (!shut) {
- sctp_ootb_pkt_free(packet);
- return SCTP_DISPOSITION_NOMEM;
- }
-
- /* Reflect vtag if T-Bit is set */
- if (sctp_test_T_bit(shut))
- packet->vtag = ntohl(chunk->sctp_hdr->vtag);
+ /* Make an SHUTDOWN_COMPLETE.
+ * The T bit will be set if the asoc is NULL.
+ */
+ shut = sctp_make_shutdown_complete(asoc, chunk);
+ if (!shut) {
+ sctp_ootb_pkt_free(packet);
+ return SCTP_DISPOSITION_NOMEM;
+ }
- /* Set the skb to the belonging sock for accounting. */
- shut->skb->sk = ep->base.sk;
+ /* Reflect vtag if T-Bit is set */
+ if (sctp_test_T_bit(shut))
+ packet->vtag = ntohl(chunk->sctp_hdr->vtag);
- sctp_packet_append_chunk(packet, shut);
+ /* Set the skb to the belonging sock for accounting. */
+ shut->skb->sk = ep->base.sk;
- sctp_add_cmd_sf(commands, SCTP_CMD_SEND_PKT,
- SCTP_PACKET(packet));
+ sctp_packet_append_chunk(packet, shut);
- SCTP_INC_STATS(net, SCTP_MIB_OUTCTRLCHUNKS);
+ sctp_add_cmd_sf(commands, SCTP_CMD_SEND_PKT,
+ SCTP_PACKET(packet));
- /* If the chunk length is invalid, we don't want to process
- * the reset of the packet.
- */
- if (!sctp_chunk_length_valid(chunk, sizeof(sctp_chunkhdr_t)))
- return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+ SCTP_INC_STATS(net, SCTP_MIB_OUTCTRLCHUNKS);
- /* We need to discard the rest of the packet to prevent
- * potential bomming attacks from additional bundled chunks.
- * This is documented in SCTP Threats ID.
- */
+ /* If the chunk length is invalid, we don't want to process
+ * the reset of the packet.
+ */
+ if (!sctp_chunk_length_valid(chunk, sizeof(sctp_chunkhdr_t)))
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
- }
- return SCTP_DISPOSITION_NOMEM;
+ /* We need to discard the rest of the packet to prevent
+ * potential bomming attacks from additional bundled chunks.
+ * This is documented in SCTP Threats ID.
+ */
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
/*
@@ -3811,6 +3834,60 @@ sctp_disposition_t sctp_sf_do_asconf_ack(struct net *net,
return SCTP_DISPOSITION_DISCARD;
}
+/* RE-CONFIG Section 5.2 Upon reception of an RECONF Chunk. */
+sctp_disposition_t sctp_sf_do_reconf(struct net *net,
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type, void *arg,
+ sctp_cmd_seq_t *commands)
+{
+ struct sctp_paramhdr *err_param = NULL;
+ struct sctp_chunk *chunk = arg;
+ struct sctp_reconf_chunk *hdr;
+ union sctp_params param;
+
+ if (!sctp_vtag_verify(chunk, asoc)) {
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_BAD_TAG,
+ SCTP_NULL());
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+ }
+
+ /* Make sure that the RECONF chunk has a valid length. */
+ if (!sctp_chunk_length_valid(chunk, sizeof(*hdr)))
+ return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
+ commands);
+
+ if (!sctp_verify_reconf(asoc, chunk, &err_param))
+ return sctp_sf_violation_paramlen(net, ep, asoc, type, arg,
+ (void *)err_param, commands);
+
+ hdr = (struct sctp_reconf_chunk *)chunk->chunk_hdr;
+ sctp_walk_params(param, hdr, params) {
+ struct sctp_chunk *reply = NULL;
+ struct sctp_ulpevent *ev = NULL;
+
+ if (param.p->type == SCTP_PARAM_RESET_OUT_REQUEST)
+ reply = sctp_process_strreset_outreq(
+ (struct sctp_association *)asoc, param, &ev);
+ else if (param.p->type == SCTP_PARAM_RESET_IN_REQUEST)
+ reply = sctp_process_strreset_inreq(
+ (struct sctp_association *)asoc, param, &ev);
+ /* More handles for other types will be added here, by now it
+ * just ignores other types.
+ */
+
+ if (ev)
+ sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
+ SCTP_ULPEVENT(ev));
+
+ if (reply)
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
+ SCTP_CHUNK(reply));
+ }
+
+ return SCTP_DISPOSITION_CONSUME;
+}
+
/*
* PR-SCTP Section 3.6 Receiver Side Implementation of PR-SCTP
*
@@ -3844,6 +3921,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(struct net *net,
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
+ if (!asoc->peer.prsctp_capable)
+ return sctp_sf_unk_chunk(net, ep, asoc, type, arg, commands);
+
/* Make sure that the FORWARD_TSN chunk has valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
@@ -3866,7 +3946,7 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn(struct net *net,
/* Silently discard the chunk if stream-id is not valid */
sctp_walk_fwdtsn(skip, chunk) {
- if (ntohs(skip->stream) >= asoc->c.sinit_max_instreams)
+ if (ntohs(skip->stream) >= asoc->stream->incnt)
goto discard_noforce;
}
@@ -3912,6 +3992,9 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast(
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
+ if (!asoc->peer.prsctp_capable)
+ return sctp_sf_unk_chunk(net, ep, asoc, type, arg, commands);
+
/* Make sure that the FORWARD_TSN chunk has a valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(struct sctp_fwdtsn_chunk)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
@@ -3934,7 +4017,7 @@ sctp_disposition_t sctp_sf_eat_fwd_tsn_fast(
/* Silently discard the chunk if stream-id is not valid */
sctp_walk_fwdtsn(skip, chunk) {
- if (ntohs(skip->stream) >= asoc->c.sinit_max_instreams)
+ if (ntohs(skip->stream) >= asoc->stream->incnt)
goto gen_shutdown;
}
@@ -5162,6 +5245,19 @@ sctp_disposition_t sctp_sf_do_prm_asconf(struct net *net,
return SCTP_DISPOSITION_CONSUME;
}
+/* RE-CONFIG Section 5.1 RECONF Chunk Procedures */
+sctp_disposition_t sctp_sf_do_prm_reconf(struct net *net,
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg, sctp_cmd_seq_t *commands)
+{
+ struct sctp_chunk *chunk = arg;
+
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(chunk));
+ return SCTP_DISPOSITION_CONSUME;
+}
+
/*
* Ignore the primitive event
*
@@ -6036,8 +6132,9 @@ static struct sctp_packet *sctp_ootb_pkt_new(struct net *net,
sctp_transport_route(transport, (union sctp_addr *)&chunk->dest,
sctp_sk(net->sctp.ctl_sock));
- packet = sctp_packet_init(&transport->packet, transport, sport, dport);
- packet = sctp_packet_config(packet, vtag, 0);
+ packet = &transport->packet;
+ sctp_packet_init(packet, transport, sport, dport);
+ sctp_packet_config(packet, vtag, 0);
return packet;
@@ -6256,7 +6353,7 @@ static int sctp_eat_data(const struct sctp_association *asoc,
* and discard the DATA chunk.
*/
sid = ntohs(data_hdr->stream);
- if (sid >= asoc->c.sinit_max_instreams) {
+ if (sid >= asoc->stream->incnt) {
/* Mark tsn as received even though we drop it */
sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_TSN, SCTP_U32(tsn));
@@ -6278,9 +6375,8 @@ static int sctp_eat_data(const struct sctp_association *asoc,
* and is invalid.
*/
ssn = ntohs(data_hdr->ssn);
- if (ordered && SSN_lt(ssn, sctp_ssn_peek(&asoc->ssnmap->in, sid))) {
+ if (ordered && SSN_lt(ssn, sctp_ssn_peek(asoc->stream, in, sid)))
return SCTP_IERROR_PROTO_VIOLATION;
- }
/* Send the data up to the user. Note: Schedule the
* SCTP_CMD_CHUNK_ULP cmd before the SCTP_CMD_GEN_SACK, as the SACK
diff --git a/net/sctp/sm_statetable.c b/net/sctp/sm_statetable.c
index a987d54b379c..419b18ebb056 100644
--- a/net/sctp/sm_statetable.c
+++ b/net/sctp/sm_statetable.c
@@ -482,6 +482,32 @@ static const sctp_sm_table_entry_t prsctp_chunk_event_table[SCTP_NUM_PRSCTP_CHUN
TYPE_SCTP_FWD_TSN,
}; /*state_fn_t prsctp_chunk_event_table[][] */
+#define TYPE_SCTP_RECONF { \
+ /* SCTP_STATE_CLOSED */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+ /* SCTP_STATE_COOKIE_WAIT */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+ /* SCTP_STATE_COOKIE_ECHOED */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+ /* SCTP_STATE_ESTABLISHED */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
+ /* SCTP_STATE_SHUTDOWN_PENDING */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_reconf), \
+ /* SCTP_STATE_SHUTDOWN_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+ /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+ /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_discard_chunk), \
+} /* TYPE_SCTP_RECONF */
+
+/* The primary index for this table is the chunk type.
+ * The secondary index for this table is the state.
+ */
+static const sctp_sm_table_entry_t reconf_chunk_event_table[SCTP_NUM_RECONF_CHUNK_TYPES][SCTP_STATE_NUM_STATES] = {
+ TYPE_SCTP_RECONF,
+}; /*state_fn_t reconf_chunk_event_table[][] */
+
#define TYPE_SCTP_AUTH { \
/* SCTP_STATE_CLOSED */ \
TYPE_SCTP_FUNC(sctp_sf_ootb), \
@@ -643,6 +669,25 @@ chunk_event_table_unknown[SCTP_STATE_NUM_STATES] = {
TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
} /* TYPE_SCTP_PRIMITIVE_ASCONF */
+#define TYPE_SCTP_PRIMITIVE_RECONF { \
+ /* SCTP_STATE_CLOSED */ \
+ TYPE_SCTP_FUNC(sctp_sf_error_closed), \
+ /* SCTP_STATE_COOKIE_WAIT */ \
+ TYPE_SCTP_FUNC(sctp_sf_error_closed), \
+ /* SCTP_STATE_COOKIE_ECHOED */ \
+ TYPE_SCTP_FUNC(sctp_sf_error_closed), \
+ /* SCTP_STATE_ESTABLISHED */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
+ /* SCTP_STATE_SHUTDOWN_PENDING */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
+ /* SCTP_STATE_SHUTDOWN_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
+ /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
+ TYPE_SCTP_FUNC(sctp_sf_do_prm_reconf), \
+ /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_error_shutdown), \
+} /* TYPE_SCTP_PRIMITIVE_RECONF */
+
/* The primary index for this table is the primitive type.
* The secondary index for this table is the state.
*/
@@ -653,6 +698,7 @@ static const sctp_sm_table_entry_t primitive_event_table[SCTP_NUM_PRIMITIVE_TYPE
TYPE_SCTP_PRIMITIVE_SEND,
TYPE_SCTP_PRIMITIVE_REQUESTHEARTBEAT,
TYPE_SCTP_PRIMITIVE_ASCONF,
+ TYPE_SCTP_PRIMITIVE_RECONF,
};
#define TYPE_SCTP_OTHER_NO_PENDING_TSN { \
@@ -888,6 +934,25 @@ static const sctp_sm_table_entry_t other_event_table[SCTP_NUM_OTHER_TYPES][SCTP_
TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
}
+#define TYPE_SCTP_EVENT_TIMEOUT_RECONF { \
+ /* SCTP_STATE_CLOSED */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_COOKIE_WAIT */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_COOKIE_ECHOED */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_ESTABLISHED */ \
+ TYPE_SCTP_FUNC(sctp_sf_send_reconf), \
+ /* SCTP_STATE_SHUTDOWN_PENDING */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_SHUTDOWN_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_SHUTDOWN_RECEIVED */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+ /* SCTP_STATE_SHUTDOWN_ACK_SENT */ \
+ TYPE_SCTP_FUNC(sctp_sf_timer_ignore), \
+}
+
static const sctp_sm_table_entry_t timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][SCTP_STATE_NUM_STATES] = {
TYPE_SCTP_EVENT_TIMEOUT_NONE,
TYPE_SCTP_EVENT_TIMEOUT_T1_COOKIE,
@@ -897,6 +962,7 @@ static const sctp_sm_table_entry_t timeout_event_table[SCTP_NUM_TIMEOUT_TYPES][S
TYPE_SCTP_EVENT_TIMEOUT_T4_RTO,
TYPE_SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD,
TYPE_SCTP_EVENT_TIMEOUT_HEARTBEAT,
+ TYPE_SCTP_EVENT_TIMEOUT_RECONF,
TYPE_SCTP_EVENT_TIMEOUT_SACK,
TYPE_SCTP_EVENT_TIMEOUT_AUTOCLOSE,
};
@@ -924,6 +990,10 @@ static const sctp_sm_table_entry_t *sctp_chunk_event_lookup(struct net *net,
return &addip_chunk_event_table[1][state];
}
+ if (net->sctp.reconf_enable)
+ if (cid == SCTP_CID_RECONF)
+ return &reconf_chunk_event_table[0][state];
+
if (net->sctp.auth_enable) {
if (cid == SCTP_CID_AUTH)
return &auth_chunk_event_table[0][state];
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index f23ad913dc7a..d9d4c92e06b3 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -57,6 +57,7 @@
#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/time.h>
+#include <linux/sched/signal.h>
#include <linux/ip.h>
#include <linux/capability.h>
#include <linux/fcntl.h>
@@ -235,8 +236,12 @@ static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
sctp_assoc_t id)
{
struct sctp_association *addr_asoc = NULL, *id_asoc = NULL;
- struct sctp_transport *transport;
+ struct sctp_af *af = sctp_get_af_specific(addr->ss_family);
union sctp_addr *laddr = (union sctp_addr *)addr;
+ struct sctp_transport *transport;
+
+ if (!af || sctp_verify_addr(sk, laddr, af->sockaddr_len))
+ return NULL;
addr_asoc = sctp_endpoint_lookup_assoc(sctp_sk(sk)->ep,
laddr,
@@ -360,7 +365,7 @@ static int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
}
}
- if (snum && snum < PROT_SOCK &&
+ if (snum && snum < inet_prot_sock(net) &&
!ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
return -EACCES;
@@ -588,7 +593,7 @@ static int sctp_send_asconf_add_ip(struct sock *sk,
list_for_each_entry(trans,
&asoc->peer.transport_addr_list, transports) {
/* Clear the source and route cache */
- dst_release(trans->dst);
+ sctp_transport_dst_release(trans);
trans->cwnd = min(4*asoc->pathmtu, max_t(__u32,
2*asoc->pathmtu, 4380));
trans->ssthresh = asoc->peer.i.a_rwnd;
@@ -839,7 +844,7 @@ skip_mkasconf:
*/
list_for_each_entry(transport, &asoc->peer.transport_addr_list,
transports) {
- dst_release(transport->dst);
+ sctp_transport_dst_release(transport);
sctp_transport_route(transport, NULL,
sctp_sk(asoc->base.sk));
}
@@ -1152,8 +1157,10 @@ static int __sctp_connect(struct sock *sk,
* accept new associations, but it SHOULD NOT
* be permitted to open new associations.
*/
- if (ep->base.bind_addr.port < PROT_SOCK &&
- !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) {
+ if (ep->base.bind_addr.port <
+ inet_prot_sock(net) &&
+ !ns_capable(net->user_ns,
+ CAP_NET_BIND_SERVICE)) {
err = -EACCES;
goto out_free;
}
@@ -1818,7 +1825,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
* but it SHOULD NOT be permitted to open new
* associations.
*/
- if (ep->base.bind_addr.port < PROT_SOCK &&
+ if (ep->base.bind_addr.port < inet_prot_sock(net) &&
!ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) {
err = -EACCES;
goto out_unlock;
@@ -1900,7 +1907,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
}
if (asoc->pmtu_pending)
- sctp_assoc_pending_pmtu(sk, asoc);
+ sctp_assoc_pending_pmtu(asoc);
/* If fragmentation is disabled and the message length exceeds the
* association fragmentation point, return EMSGSIZE. The I-D
@@ -1913,7 +1920,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
}
/* Check for invalid stream. */
- if (sinfo->sinfo_stream >= asoc->c.sinit_num_ostreams) {
+ if (sinfo->sinfo_stream >= asoc->stream->outcnt) {
err = -EINVAL;
goto out_free;
}
@@ -1958,6 +1965,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
err = PTR_ERR(datamsg);
goto out_free;
}
+ asoc->force_delay = !!(msg->msg_flags & MSG_MORE);
/* Now send the (possibly) fragmented message. */
list_for_each_entry(chunk, &datamsg->chunks, frag_list) {
@@ -2427,10 +2435,9 @@ 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(sctp_opt2sk(sp), asoc);
+ sctp_assoc_sync_pmtu(asoc);
} else if (asoc) {
asoc->pathmtu = params->spp_pathmtu;
- sctp_frag_point(asoc, params->spp_pathmtu);
} else {
sp->pathmtu = params->spp_pathmtu;
}
@@ -2444,7 +2451,7 @@ 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(sctp_opt2sk(sp), asoc);
+ sctp_assoc_sync_pmtu(asoc);
}
} else if (asoc) {
asoc->param_flags =
@@ -3751,6 +3758,120 @@ out:
return retval;
}
+static int sctp_setsockopt_enable_strreset(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(params))
+ goto out;
+
+ if (copy_from_user(&params, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ if (params.assoc_value & (~SCTP_ENABLE_STRRESET_MASK))
+ goto out;
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (asoc) {
+ asoc->strreset_enable = params.assoc_value;
+ } else if (!params.assoc_id) {
+ struct sctp_sock *sp = sctp_sk(sk);
+
+ sp->ep->strreset_enable = params.assoc_value;
+ } else {
+ goto out;
+ }
+
+ retval = 0;
+
+out:
+ return retval;
+}
+
+static int sctp_setsockopt_reset_streams(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_reset_streams *params;
+ struct sctp_association *asoc;
+ int retval = -EINVAL;
+
+ if (optlen < sizeof(struct sctp_reset_streams))
+ return -EINVAL;
+
+ params = memdup_user(optval, optlen);
+ if (IS_ERR(params))
+ return PTR_ERR(params);
+
+ asoc = sctp_id2assoc(sk, params->srs_assoc_id);
+ if (!asoc)
+ goto out;
+
+ retval = sctp_send_reset_streams(asoc, params);
+
+out:
+ kfree(params);
+ return retval;
+}
+
+static int sctp_setsockopt_reset_assoc(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_association *asoc;
+ sctp_assoc_t associd;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(associd))
+ goto out;
+
+ if (copy_from_user(&associd, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ asoc = sctp_id2assoc(sk, associd);
+ if (!asoc)
+ goto out;
+
+ retval = sctp_send_reset_assoc(asoc);
+
+out:
+ return retval;
+}
+
+static int sctp_setsockopt_add_streams(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_association *asoc;
+ struct sctp_add_streams params;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(params))
+ goto out;
+
+ if (copy_from_user(&params, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ asoc = sctp_id2assoc(sk, params.sas_assoc_id);
+ if (!asoc)
+ goto out;
+
+ retval = sctp_send_add_streams(asoc, &params);
+
+out:
+ return retval;
+}
+
/* API 6.2 setsockopt(), getsockopt()
*
* Applications use setsockopt() and getsockopt() to set or retrieve
@@ -3917,6 +4038,18 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
case SCTP_DEFAULT_PRINFO:
retval = sctp_setsockopt_default_prinfo(sk, optval, optlen);
break;
+ case SCTP_ENABLE_STREAM_RESET:
+ retval = sctp_setsockopt_enable_strreset(sk, optval, optlen);
+ break;
+ case SCTP_RESET_STREAMS:
+ retval = sctp_setsockopt_reset_streams(sk, optval, optlen);
+ break;
+ case SCTP_RESET_ASSOC:
+ retval = sctp_setsockopt_reset_assoc(sk, optval, optlen);
+ break;
+ case SCTP_ADD_STREAMS:
+ retval = sctp_setsockopt_add_streams(sk, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
@@ -3983,7 +4116,7 @@ static int sctp_disconnect(struct sock *sk, int flags)
* descriptor will be returned from accept() to represent the newly
* formed association.
*/
-static struct sock *sctp_accept(struct sock *sk, int flags, int *err)
+static struct sock *sctp_accept(struct sock *sk, int flags, int *err, bool kern)
{
struct sctp_sock *sp;
struct sctp_endpoint *ep;
@@ -4018,7 +4151,7 @@ static struct sock *sctp_accept(struct sock *sk, int flags, int *err)
*/
asoc = list_entry(ep->asocs.next, struct sctp_association, asocs);
- newsk = sp->pf->create_accept_sk(sk, asoc);
+ newsk = sp->pf->create_accept_sk(sk, asoc, kern);
if (!newsk) {
error = -ENOMEM;
goto out;
@@ -4328,8 +4461,8 @@ int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
info->sctpi_rwnd = asoc->a_rwnd;
info->sctpi_unackdata = asoc->unack_data;
info->sctpi_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
- info->sctpi_instrms = asoc->c.sinit_max_instreams;
- info->sctpi_outstrms = asoc->c.sinit_num_ostreams;
+ info->sctpi_instrms = asoc->stream->incnt;
+ info->sctpi_outstrms = asoc->stream->outcnt;
list_for_each(pos, &asoc->base.inqueue.in_chunk_list)
info->sctpi_inqueue++;
list_for_each(pos, &asoc->outqueue.out_chunk_list)
@@ -4392,10 +4525,7 @@ int sctp_transport_walk_start(struct rhashtable_iter *iter)
{
int err;
- err = rhashtable_walk_init(&sctp_transport_hashtable, iter,
- GFP_KERNEL);
- if (err)
- return err;
+ rhltable_walk_enter(&sctp_transport_hashtable, iter);
err = rhashtable_walk_start(iter);
if (err && err != -EAGAIN) {
@@ -4475,18 +4605,17 @@ int sctp_transport_lookup_process(int (*cb)(struct sctp_transport *, void *),
const union sctp_addr *paddr, void *p)
{
struct sctp_transport *transport;
- int err = -ENOENT;
+ int err;
rcu_read_lock();
transport = sctp_addrs_lookup_transport(net, laddr, paddr);
- if (!transport || !sctp_transport_hold(transport))
- goto out;
-
rcu_read_unlock();
+ if (!transport)
+ return -ENOENT;
+
err = cb(transport, p);
sctp_transport_put(transport);
-out:
return err;
}
EXPORT_SYMBOL_GPL(sctp_transport_lookup_process);
@@ -4562,8 +4691,8 @@ static int sctp_getsockopt_sctp_status(struct sock *sk, int len,
status.sstat_unackdata = asoc->unack_data;
status.sstat_penddata = sctp_tsnmap_pending(&asoc->peer.tsn_map);
- status.sstat_instrms = asoc->c.sinit_max_instreams;
- status.sstat_outstrms = asoc->c.sinit_num_ostreams;
+ status.sstat_instrms = asoc->stream->incnt;
+ status.sstat_outstrms = asoc->stream->outcnt;
status.sstat_fragmentation_point = asoc->frag_point;
status.sstat_primary.spinfo_assoc_id = sctp_assoc2id(transport->asoc);
memcpy(&status.sstat_primary.spinfo_address, &transport->ipaddr,
@@ -4734,6 +4863,12 @@ int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp)
if (!asoc)
return -EINVAL;
+ /* If there is a thread waiting on more sndbuf space for
+ * sending on this asoc, it cannot be peeled.
+ */
+ if (waitqueue_active(&asoc->wait))
+ return -EBUSY;
+
/* An association cannot be branched off from an already peeled-off
* socket, nor is this supported for tcp style sockets.
*/
@@ -6405,6 +6540,47 @@ out:
return retval;
}
+static int sctp_getsockopt_enable_strreset(struct sock *sk, int len,
+ char __user *optval,
+ int __user *optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ int retval = -EFAULT;
+
+ if (len < sizeof(params)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ len = sizeof(params);
+ if (copy_from_user(&params, optval, len))
+ goto out;
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (asoc) {
+ params.assoc_value = asoc->strreset_enable;
+ } else if (!params.assoc_id) {
+ struct sctp_sock *sp = sctp_sk(sk);
+
+ params.assoc_value = sp->ep->strreset_enable;
+ } else {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ if (put_user(len, optlen))
+ goto out;
+
+ if (copy_to_user(optval, &params, len))
+ goto out;
+
+ retval = 0;
+
+out:
+ return retval;
+}
+
static int sctp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
@@ -6572,6 +6748,10 @@ static int sctp_getsockopt(struct sock *sk, int level, int optname,
retval = sctp_getsockopt_pr_assocstatus(sk, len, optval,
optlen);
break;
+ case SCTP_ENABLE_STREAM_RESET:
+ retval = sctp_getsockopt_enable_strreset(sk, len, optval,
+ optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
@@ -6854,6 +7034,9 @@ int sctp_inet_listen(struct socket *sock, int backlog)
if (sock->state != SS_UNCONNECTED)
goto out;
+ if (!sctp_sstate(sk, LISTENING) && !sctp_sstate(sk, CLOSED))
+ goto out;
+
/* If backlog is zero, disable listening. */
if (!backlog) {
if (sctp_sstate(sk, CLOSED))
@@ -7426,7 +7609,6 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
*/
release_sock(sk);
current_timeo = schedule_timeout(current_timeo);
- BUG_ON(sk != asoc->base.sk);
lock_sock(sk);
*timeo_p = current_timeo;
diff --git a/net/sctp/ssnmap.c b/net/sctp/ssnmap.c
deleted file mode 100644
index b9c8521c1a98..000000000000
--- a/net/sctp/ssnmap.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* SCTP kernel implementation
- * Copyright (c) 2003 International Business Machines, Corp.
- *
- * This file is part of the SCTP kernel implementation
- *
- * These functions manipulate sctp SSN tracker.
- *
- * This SCTP implementation is free software;
- * you can redistribute it and/or modify it under the terms of
- * the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This SCTP implementation is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * ************************
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- *
- * Please send any bug reports or fixes you make to the
- * email address(es):
- * lksctp developers <linux-sctp@vger.kernel.org>
- *
- * Written or modified by:
- * Jon Grimm <jgrimm@us.ibm.com>
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <net/sctp/sctp.h>
-#include <net/sctp/sm.h>
-
-static struct sctp_ssnmap *sctp_ssnmap_init(struct sctp_ssnmap *map, __u16 in,
- __u16 out);
-
-/* Storage size needed for map includes 2 headers and then the
- * specific needs of in or out streams.
- */
-static inline size_t sctp_ssnmap_size(__u16 in, __u16 out)
-{
- return sizeof(struct sctp_ssnmap) + (in + out) * sizeof(__u16);
-}
-
-
-/* Create a new sctp_ssnmap.
- * Allocate room to store at least 'len' contiguous TSNs.
- */
-struct sctp_ssnmap *sctp_ssnmap_new(__u16 in, __u16 out,
- gfp_t gfp)
-{
- struct sctp_ssnmap *retval;
- int size;
-
- size = sctp_ssnmap_size(in, out);
- if (size <= KMALLOC_MAX_SIZE)
- retval = kmalloc(size, gfp);
- else
- retval = (struct sctp_ssnmap *)
- __get_free_pages(gfp, get_order(size));
- if (!retval)
- goto fail;
-
- if (!sctp_ssnmap_init(retval, in, out))
- goto fail_map;
-
- SCTP_DBG_OBJCNT_INC(ssnmap);
-
- return retval;
-
-fail_map:
- if (size <= KMALLOC_MAX_SIZE)
- kfree(retval);
- else
- free_pages((unsigned long)retval, get_order(size));
-fail:
- return NULL;
-}
-
-
-/* Initialize a block of memory as a ssnmap. */
-static struct sctp_ssnmap *sctp_ssnmap_init(struct sctp_ssnmap *map, __u16 in,
- __u16 out)
-{
- memset(map, 0x00, sctp_ssnmap_size(in, out));
-
- /* Start 'in' stream just after the map header. */
- map->in.ssn = (__u16 *)&map[1];
- map->in.len = in;
-
- /* Start 'out' stream just after 'in'. */
- map->out.ssn = &map->in.ssn[in];
- map->out.len = out;
-
- return map;
-}
-
-/* Clear out the ssnmap streams. */
-void sctp_ssnmap_clear(struct sctp_ssnmap *map)
-{
- size_t size;
-
- size = (map->in.len + map->out.len) * sizeof(__u16);
- memset(map->in.ssn, 0x00, size);
-}
-
-/* Dispose of a ssnmap. */
-void sctp_ssnmap_free(struct sctp_ssnmap *map)
-{
- int size;
-
- if (unlikely(!map))
- return;
-
- size = sctp_ssnmap_size(map->in.len, map->out.len);
- if (size <= KMALLOC_MAX_SIZE)
- kfree(map);
- else
- free_pages((unsigned long)map, get_order(size));
-
- SCTP_DBG_OBJCNT_DEC(ssnmap);
-}
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
new file mode 100644
index 000000000000..bbed997e1c5f
--- /dev/null
+++ b/net/sctp/stream.c
@@ -0,0 +1,506 @@
+/* SCTP kernel implementation
+ * (C) Copyright IBM Corp. 2001, 2004
+ * Copyright (c) 1999-2000 Cisco, Inc.
+ * Copyright (c) 1999-2001 Motorola, Inc.
+ * Copyright (c) 2001 Intel Corp.
+ *
+ * This file is part of the SCTP kernel implementation
+ *
+ * These functions manipulate sctp tsn mapping array.
+ *
+ * This SCTP implementation is free software;
+ * you can redistribute it and/or modify it under the terms of
+ * the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This SCTP implementation is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * ************************
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU CC; see the file COPYING. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email address(es):
+ * lksctp developers <linux-sctp@vger.kernel.org>
+ *
+ * Written or modified by:
+ * Xin Long <lucien.xin@gmail.com>
+ */
+
+#include <net/sctp/sctp.h>
+#include <net/sctp/sm.h>
+
+int sctp_stream_new(struct sctp_association *asoc, gfp_t gfp)
+{
+ struct sctp_stream *stream;
+ int i;
+
+ stream = kzalloc(sizeof(*stream), gfp);
+ if (!stream)
+ return -ENOMEM;
+
+ stream->outcnt = asoc->c.sinit_num_ostreams;
+ stream->out = kcalloc(stream->outcnt, sizeof(*stream->out), gfp);
+ if (!stream->out) {
+ kfree(stream);
+ return -ENOMEM;
+ }
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].state = SCTP_STREAM_OPEN;
+
+ asoc->stream = stream;
+
+ return 0;
+}
+
+int sctp_stream_init(struct sctp_association *asoc, gfp_t gfp)
+{
+ struct sctp_stream *stream = asoc->stream;
+ int i;
+
+ /* Initial stream->out size may be very big, so free it and alloc
+ * a new one with new outcnt to save memory.
+ */
+ kfree(stream->out);
+ stream->outcnt = asoc->c.sinit_num_ostreams;
+ stream->out = kcalloc(stream->outcnt, sizeof(*stream->out), gfp);
+ if (!stream->out)
+ goto nomem;
+
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].state = SCTP_STREAM_OPEN;
+
+ stream->incnt = asoc->c.sinit_max_instreams;
+ stream->in = kcalloc(stream->incnt, sizeof(*stream->in), gfp);
+ if (!stream->in) {
+ kfree(stream->out);
+ goto nomem;
+ }
+
+ return 0;
+
+nomem:
+ asoc->stream = NULL;
+ kfree(stream);
+
+ return -ENOMEM;
+}
+
+void sctp_stream_free(struct sctp_stream *stream)
+{
+ if (unlikely(!stream))
+ return;
+
+ kfree(stream->out);
+ kfree(stream->in);
+ kfree(stream);
+}
+
+void sctp_stream_clear(struct sctp_stream *stream)
+{
+ int i;
+
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].ssn = 0;
+
+ for (i = 0; i < stream->incnt; i++)
+ stream->in[i].ssn = 0;
+}
+
+static int sctp_send_reconf(struct sctp_association *asoc,
+ struct sctp_chunk *chunk)
+{
+ struct net *net = sock_net(asoc->base.sk);
+ int retval = 0;
+
+ retval = sctp_primitive_RECONF(net, asoc, chunk);
+ if (retval)
+ sctp_chunk_free(chunk);
+
+ return retval;
+}
+
+int sctp_send_reset_streams(struct sctp_association *asoc,
+ struct sctp_reset_streams *params)
+{
+ struct sctp_stream *stream = asoc->stream;
+ __u16 i, str_nums, *str_list;
+ struct sctp_chunk *chunk;
+ int retval = -EINVAL;
+ bool out, in;
+
+ if (!asoc->peer.reconf_capable ||
+ !(asoc->strreset_enable & SCTP_ENABLE_RESET_STREAM_REQ)) {
+ retval = -ENOPROTOOPT;
+ goto out;
+ }
+
+ if (asoc->strreset_outstanding) {
+ retval = -EINPROGRESS;
+ goto out;
+ }
+
+ out = params->srs_flags & SCTP_STREAM_RESET_OUTGOING;
+ in = params->srs_flags & SCTP_STREAM_RESET_INCOMING;
+ if (!out && !in)
+ goto out;
+
+ str_nums = params->srs_number_streams;
+ str_list = params->srs_stream_list;
+ if (out && str_nums)
+ for (i = 0; i < str_nums; i++)
+ if (str_list[i] >= stream->outcnt)
+ goto out;
+
+ if (in && str_nums)
+ for (i = 0; i < str_nums; i++)
+ if (str_list[i] >= stream->incnt)
+ goto out;
+
+ for (i = 0; i < str_nums; i++)
+ str_list[i] = htons(str_list[i]);
+
+ chunk = sctp_make_strreset_req(asoc, str_nums, str_list, out, in);
+
+ for (i = 0; i < str_nums; i++)
+ str_list[i] = ntohs(str_list[i]);
+
+ if (!chunk) {
+ retval = -ENOMEM;
+ goto out;
+ }
+
+ if (out) {
+ if (str_nums)
+ for (i = 0; i < str_nums; i++)
+ stream->out[str_list[i]].state =
+ SCTP_STREAM_CLOSED;
+ else
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].state = SCTP_STREAM_CLOSED;
+ }
+
+ asoc->strreset_chunk = chunk;
+ sctp_chunk_hold(asoc->strreset_chunk);
+
+ retval = sctp_send_reconf(asoc, chunk);
+ if (retval) {
+ sctp_chunk_put(asoc->strreset_chunk);
+ asoc->strreset_chunk = NULL;
+ if (!out)
+ goto out;
+
+ if (str_nums)
+ for (i = 0; i < str_nums; i++)
+ stream->out[str_list[i]].state =
+ SCTP_STREAM_OPEN;
+ else
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].state = SCTP_STREAM_OPEN;
+
+ goto out;
+ }
+
+ asoc->strreset_outstanding = out + in;
+
+out:
+ return retval;
+}
+
+int sctp_send_reset_assoc(struct sctp_association *asoc)
+{
+ struct sctp_chunk *chunk = NULL;
+ int retval;
+ __u16 i;
+
+ if (!asoc->peer.reconf_capable ||
+ !(asoc->strreset_enable & SCTP_ENABLE_RESET_ASSOC_REQ))
+ return -ENOPROTOOPT;
+
+ if (asoc->strreset_outstanding)
+ return -EINPROGRESS;
+
+ chunk = sctp_make_strreset_tsnreq(asoc);
+ if (!chunk)
+ return -ENOMEM;
+
+ /* Block further xmit of data until this request is completed */
+ for (i = 0; i < asoc->stream->outcnt; i++)
+ asoc->stream->out[i].state = SCTP_STREAM_CLOSED;
+
+ asoc->strreset_chunk = chunk;
+ sctp_chunk_hold(asoc->strreset_chunk);
+
+ retval = sctp_send_reconf(asoc, chunk);
+ if (retval) {
+ sctp_chunk_put(asoc->strreset_chunk);
+ asoc->strreset_chunk = NULL;
+
+ for (i = 0; i < asoc->stream->outcnt; i++)
+ asoc->stream->out[i].state = SCTP_STREAM_OPEN;
+
+ return retval;
+ }
+
+ asoc->strreset_outstanding = 1;
+
+ return 0;
+}
+
+int sctp_send_add_streams(struct sctp_association *asoc,
+ struct sctp_add_streams *params)
+{
+ struct sctp_stream *stream = asoc->stream;
+ struct sctp_chunk *chunk = NULL;
+ int retval = -ENOMEM;
+ __u32 outcnt, incnt;
+ __u16 out, in;
+
+ if (!asoc->peer.reconf_capable ||
+ !(asoc->strreset_enable & SCTP_ENABLE_CHANGE_ASSOC_REQ)) {
+ retval = -ENOPROTOOPT;
+ goto out;
+ }
+
+ if (asoc->strreset_outstanding) {
+ retval = -EINPROGRESS;
+ goto out;
+ }
+
+ out = params->sas_outstrms;
+ in = params->sas_instrms;
+ outcnt = stream->outcnt + out;
+ incnt = stream->incnt + in;
+ if (outcnt > SCTP_MAX_STREAM || incnt > SCTP_MAX_STREAM ||
+ (!out && !in)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ if (out) {
+ struct sctp_stream_out *streamout;
+
+ streamout = krealloc(stream->out, outcnt * sizeof(*streamout),
+ GFP_KERNEL);
+ if (!streamout)
+ goto out;
+
+ memset(streamout + stream->outcnt, 0, out * sizeof(*streamout));
+ stream->out = streamout;
+ }
+
+ if (in) {
+ struct sctp_stream_in *streamin;
+
+ streamin = krealloc(stream->in, incnt * sizeof(*streamin),
+ GFP_KERNEL);
+ if (!streamin)
+ goto out;
+
+ memset(streamin + stream->incnt, 0, in * sizeof(*streamin));
+ stream->in = streamin;
+ }
+
+ chunk = sctp_make_strreset_addstrm(asoc, out, in);
+ if (!chunk)
+ goto out;
+
+ asoc->strreset_chunk = chunk;
+ sctp_chunk_hold(asoc->strreset_chunk);
+
+ retval = sctp_send_reconf(asoc, chunk);
+ if (retval) {
+ sctp_chunk_put(asoc->strreset_chunk);
+ asoc->strreset_chunk = NULL;
+ goto out;
+ }
+
+ stream->incnt = incnt;
+ stream->outcnt = outcnt;
+
+ asoc->strreset_outstanding = !!out + !!in;
+
+out:
+ return retval;
+}
+
+static sctp_paramhdr_t *sctp_chunk_lookup_strreset_param(
+ struct sctp_association *asoc, __u32 resp_seq)
+{
+ struct sctp_chunk *chunk = asoc->strreset_chunk;
+ struct sctp_reconf_chunk *hdr;
+ union sctp_params param;
+
+ if (ntohl(resp_seq) != asoc->strreset_outseq || !chunk)
+ return NULL;
+
+ hdr = (struct sctp_reconf_chunk *)chunk->chunk_hdr;
+ sctp_walk_params(param, hdr, params) {
+ /* sctp_strreset_tsnreq is actually the basic structure
+ * of all stream reconf params, so it's safe to use it
+ * to access request_seq.
+ */
+ struct sctp_strreset_tsnreq *req = param.v;
+
+ if (req->request_seq == resp_seq)
+ return param.v;
+ }
+
+ return NULL;
+}
+
+struct sctp_chunk *sctp_process_strreset_outreq(
+ struct sctp_association *asoc,
+ union sctp_params param,
+ struct sctp_ulpevent **evp)
+{
+ struct sctp_strreset_outreq *outreq = param.v;
+ struct sctp_stream *stream = asoc->stream;
+ __u16 i, nums, flags = 0, *str_p = NULL;
+ __u32 result = SCTP_STRRESET_DENIED;
+ __u32 request_seq;
+
+ request_seq = ntohl(outreq->request_seq);
+
+ if (ntohl(outreq->send_reset_at_tsn) >
+ sctp_tsnmap_get_ctsn(&asoc->peer.tsn_map)) {
+ result = SCTP_STRRESET_IN_PROGRESS;
+ goto out;
+ }
+
+ if (request_seq > asoc->strreset_inseq) {
+ result = SCTP_STRRESET_ERR_BAD_SEQNO;
+ goto out;
+ } else if (request_seq == asoc->strreset_inseq) {
+ asoc->strreset_inseq++;
+ }
+
+ /* Check strreset_enable after inseq inc, as sender cannot tell
+ * the peer doesn't enable strreset after receiving response with
+ * result denied, as well as to keep consistent with bsd.
+ */
+ if (!(asoc->strreset_enable & SCTP_ENABLE_RESET_STREAM_REQ))
+ goto out;
+
+ if (asoc->strreset_chunk) {
+ sctp_paramhdr_t *param_hdr;
+ struct sctp_transport *t;
+
+ param_hdr = sctp_chunk_lookup_strreset_param(
+ asoc, outreq->response_seq);
+ if (!param_hdr || param_hdr->type !=
+ SCTP_PARAM_RESET_IN_REQUEST) {
+ /* same process with outstanding isn't 0 */
+ result = SCTP_STRRESET_ERR_IN_PROGRESS;
+ goto out;
+ }
+
+ asoc->strreset_outstanding--;
+ asoc->strreset_outseq++;
+
+ if (!asoc->strreset_outstanding) {
+ t = asoc->strreset_chunk->transport;
+ if (del_timer(&t->reconf_timer))
+ sctp_transport_put(t);
+
+ sctp_chunk_put(asoc->strreset_chunk);
+ asoc->strreset_chunk = NULL;
+ }
+
+ flags = SCTP_STREAM_RESET_INCOMING_SSN;
+ }
+
+ nums = (ntohs(param.p->length) - sizeof(*outreq)) / 2;
+ if (nums) {
+ str_p = outreq->list_of_streams;
+ for (i = 0; i < nums; i++) {
+ if (ntohs(str_p[i]) >= stream->incnt) {
+ result = SCTP_STRRESET_ERR_WRONG_SSN;
+ goto out;
+ }
+ }
+
+ for (i = 0; i < nums; i++)
+ stream->in[ntohs(str_p[i])].ssn = 0;
+ } else {
+ for (i = 0; i < stream->incnt; i++)
+ stream->in[i].ssn = 0;
+ }
+
+ result = SCTP_STRRESET_PERFORMED;
+
+ *evp = sctp_ulpevent_make_stream_reset_event(asoc,
+ flags | SCTP_STREAM_RESET_OUTGOING_SSN, nums, str_p,
+ GFP_ATOMIC);
+
+out:
+ return sctp_make_strreset_resp(asoc, result, request_seq);
+}
+
+struct sctp_chunk *sctp_process_strreset_inreq(
+ struct sctp_association *asoc,
+ union sctp_params param,
+ struct sctp_ulpevent **evp)
+{
+ struct sctp_strreset_inreq *inreq = param.v;
+ struct sctp_stream *stream = asoc->stream;
+ __u32 result = SCTP_STRRESET_DENIED;
+ struct sctp_chunk *chunk = NULL;
+ __u16 i, nums, *str_p;
+ __u32 request_seq;
+
+ request_seq = ntohl(inreq->request_seq);
+ if (request_seq > asoc->strreset_inseq) {
+ result = SCTP_STRRESET_ERR_BAD_SEQNO;
+ goto out;
+ } else if (request_seq == asoc->strreset_inseq) {
+ asoc->strreset_inseq++;
+ }
+
+ if (!(asoc->strreset_enable & SCTP_ENABLE_RESET_STREAM_REQ))
+ goto out;
+
+ if (asoc->strreset_outstanding) {
+ result = SCTP_STRRESET_ERR_IN_PROGRESS;
+ goto out;
+ }
+
+ nums = (ntohs(param.p->length) - sizeof(*inreq)) / 2;
+ str_p = inreq->list_of_streams;
+ for (i = 0; i < nums; i++) {
+ if (ntohs(str_p[i]) >= stream->outcnt) {
+ result = SCTP_STRRESET_ERR_WRONG_SSN;
+ goto out;
+ }
+ }
+
+ chunk = sctp_make_strreset_req(asoc, nums, str_p, 1, 0);
+ if (!chunk)
+ goto out;
+
+ if (nums)
+ for (i = 0; i < nums; i++)
+ stream->out[ntohs(str_p[i])].state =
+ SCTP_STREAM_CLOSED;
+ else
+ for (i = 0; i < stream->outcnt; i++)
+ stream->out[i].state = SCTP_STREAM_CLOSED;
+
+ asoc->strreset_chunk = chunk;
+ asoc->strreset_outstanding = 1;
+ sctp_chunk_hold(asoc->strreset_chunk);
+
+ *evp = sctp_ulpevent_make_stream_reset_event(asoc,
+ SCTP_STREAM_RESET_INCOMING_SSN, nums, str_p, GFP_ATOMIC);
+
+out:
+ if (!chunk)
+ chunk = sctp_make_strreset_resp(asoc, result, request_seq);
+
+ return chunk;
+}
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index ce54dce13ddb..721eeebfcd8a 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -72,7 +72,7 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
*/
peer->rto = msecs_to_jiffies(net->sctp.rto_initial);
- peer->last_time_heard = ktime_set(0, 0);
+ peer->last_time_heard = 0;
peer->last_time_ecne_reduced = jiffies;
peer->param_flags = SPP_HB_DISABLE |
@@ -88,9 +88,11 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
INIT_LIST_HEAD(&peer->transports);
setup_timer(&peer->T3_rtx_timer, sctp_generate_t3_rtx_event,
- (unsigned long)peer);
+ (unsigned long)peer);
setup_timer(&peer->hb_timer, sctp_generate_heartbeat_event,
- (unsigned long)peer);
+ (unsigned long)peer);
+ setup_timer(&peer->reconf_timer, sctp_generate_reconf_event,
+ (unsigned long)peer);
setup_timer(&peer->proto_unreach_timer,
sctp_generate_proto_unreach_event, (unsigned long)peer);
@@ -144,6 +146,9 @@ void sctp_transport_free(struct sctp_transport *transport)
if (del_timer(&transport->T3_rtx_timer))
sctp_transport_put(transport);
+ if (del_timer(&transport->reconf_timer))
+ sctp_transport_put(transport);
+
/* Delete the ICMP proto unreachable timer if it's active. */
if (del_timer(&transport->proto_unreach_timer))
sctp_association_put(transport->asoc);
@@ -211,6 +216,14 @@ void sctp_transport_reset_hb_timer(struct sctp_transport *transport)
sctp_transport_hold(transport);
}
+void sctp_transport_reset_reconf_timer(struct sctp_transport *transport)
+{
+ if (!timer_pending(&transport->reconf_timer))
+ if (!mod_timer(&transport->reconf_timer,
+ jiffies + transport->rto))
+ sctp_transport_hold(transport);
+}
+
/* This transport has been assigned to an association.
* Initialize fields from the association or from the sock itself.
* Register the reference count in the association.
@@ -227,7 +240,7 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
{
/* If we don't have a fresh route, look one up */
if (!transport->dst || transport->dst->obsolete) {
- dst_release(transport->dst);
+ sctp_transport_dst_release(transport);
transport->af_specific->get_dst(transport, &transport->saddr,
&transport->fl, sk);
}
@@ -238,14 +251,13 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
}
-void sctp_transport_update_pmtu(struct sock *sk, struct sctp_transport *t, u32 pmtu)
+void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu)
{
- struct dst_entry *dst;
+ struct dst_entry *dst = sctp_transport_dst_check(t);
if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) {
pr_warn("%s: Reported pmtu %d too low, using default minimum of %d\n",
- __func__, pmtu,
- SCTP_DEFAULT_MINSEGMENT);
+ __func__, pmtu, SCTP_DEFAULT_MINSEGMENT);
/* Use default minimum segment size and disable
* pmtu discovery on this transport.
*/
@@ -254,17 +266,13 @@ void sctp_transport_update_pmtu(struct sock *sk, struct sctp_transport *t, u32 p
t->pathmtu = pmtu;
}
- dst = sctp_transport_dst_check(t);
- if (!dst)
- t->af_specific->get_dst(t, &t->saddr, &t->fl, sk);
-
if (dst) {
- dst->ops->update_pmtu(dst, sk, NULL, pmtu);
-
+ dst->ops->update_pmtu(dst, t->asoc->base.sk, NULL, pmtu);
dst = sctp_transport_dst_check(t);
- if (!dst)
- t->af_specific->get_dst(t, &t->saddr, &t->fl, sk);
}
+
+ if (!dst)
+ t->af_specific->get_dst(t, &t->saddr, &t->fl, t->asoc->base.sk);
}
/* Caches the dst entry and source address for a transport's destination
@@ -630,9 +638,7 @@ void sctp_transport_reset(struct sctp_transport *t)
t->srtt = 0;
t->rttvar = 0;
- /* Reset these additional varibles so that we have a clean
- * slate.
- */
+ /* Reset these additional variables so that we have a clean slate. */
t->partial_bytes_acked = 0;
t->flight_size = 0;
t->error_count = 0;
@@ -659,3 +665,17 @@ void sctp_transport_immediate_rtx(struct sctp_transport *t)
sctp_transport_hold(t);
}
}
+
+/* Drop dst */
+void sctp_transport_dst_release(struct sctp_transport *t)
+{
+ dst_release(t->dst);
+ t->dst = NULL;
+ t->dst_pending_confirm = 0;
+}
+
+/* Schedule neighbour confirm */
+void sctp_transport_dst_confirm(struct sctp_transport *t)
+{
+ t->dst_pending_confirm = 1;
+}
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index bea00058ce35..c8881bc542a0 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -854,6 +854,35 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
return event;
}
+struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
+ const struct sctp_association *asoc, __u16 flags, __u16 stream_num,
+ __u16 *stream_list, gfp_t gfp)
+{
+ struct sctp_stream_reset_event *sreset;
+ struct sctp_ulpevent *event;
+ struct sk_buff *skb;
+ int length, i;
+
+ length = sizeof(struct sctp_stream_reset_event) + 2 * stream_num;
+ event = sctp_ulpevent_new(length, MSG_NOTIFICATION, gfp);
+ if (!event)
+ return NULL;
+
+ skb = sctp_event2skb(event);
+ sreset = (struct sctp_stream_reset_event *)skb_put(skb, length);
+
+ sreset->strreset_type = SCTP_STREAM_RESET_EVENT;
+ sreset->strreset_flags = flags;
+ sreset->strreset_length = length;
+ sctp_ulpevent_set_owner(event, asoc);
+ sreset->strreset_assoc_id = sctp_assoc2id(asoc);
+
+ for (i = 0; i < stream_num; i++)
+ sreset->strreset_stream_list[i] = ntohs(stream_list[i]);
+
+ return event;
+}
+
/* Return the notification type, assuming this is a notification
* event.
*/
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index 84d0fdaf7de9..aa3624d50278 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -760,11 +760,11 @@ static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
struct sk_buff_head *event_list;
struct sk_buff *pos, *tmp;
struct sctp_ulpevent *cevent;
- struct sctp_stream *in;
+ struct sctp_stream *stream;
__u16 sid, csid, cssn;
sid = event->stream;
- in = &ulpq->asoc->ssnmap->in;
+ stream = ulpq->asoc->stream;
event_list = (struct sk_buff_head *) sctp_event2skb(event)->prev;
@@ -782,11 +782,11 @@ static void sctp_ulpq_retrieve_ordered(struct sctp_ulpq *ulpq,
if (csid < sid)
continue;
- if (cssn != sctp_ssn_peek(in, sid))
+ if (cssn != sctp_ssn_peek(stream, in, sid))
break;
- /* Found it, so mark in the ssnmap. */
- sctp_ssn_next(in, sid);
+ /* Found it, so mark in the stream. */
+ sctp_ssn_next(stream, in, sid);
__skb_unlink(pos, &ulpq->lobby);
@@ -849,7 +849,7 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event)
{
__u16 sid, ssn;
- struct sctp_stream *in;
+ struct sctp_stream *stream;
/* Check if this message needs ordering. */
if (SCTP_DATA_UNORDERED & event->msg_flags)
@@ -858,10 +858,10 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
/* Note: The stream ID must be verified before this routine. */
sid = event->stream;
ssn = event->ssn;
- in = &ulpq->asoc->ssnmap->in;
+ stream = ulpq->asoc->stream;
/* Is this the expected SSN for this stream ID? */
- if (ssn != sctp_ssn_peek(in, sid)) {
+ if (ssn != sctp_ssn_peek(stream, in, sid)) {
/* We've received something out of order, so find where it
* needs to be placed. We order by stream and then by SSN.
*/
@@ -870,7 +870,7 @@ static struct sctp_ulpevent *sctp_ulpq_order(struct sctp_ulpq *ulpq,
}
/* Mark that the next chunk has been found. */
- sctp_ssn_next(in, sid);
+ sctp_ssn_next(stream, in, sid);
/* Go find any other chunks that were waiting for
* ordering.
@@ -888,12 +888,12 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
struct sk_buff *pos, *tmp;
struct sctp_ulpevent *cevent;
struct sctp_ulpevent *event;
- struct sctp_stream *in;
+ struct sctp_stream *stream;
struct sk_buff_head temp;
struct sk_buff_head *lobby = &ulpq->lobby;
__u16 csid, cssn;
- in = &ulpq->asoc->ssnmap->in;
+ stream = ulpq->asoc->stream;
/* We are holding the chunks by stream, by SSN. */
skb_queue_head_init(&temp);
@@ -912,7 +912,7 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
continue;
/* see if this ssn has been marked by skipping */
- if (!SSN_lt(cssn, sctp_ssn_peek(in, csid)))
+ if (!SSN_lt(cssn, sctp_ssn_peek(stream, in, csid)))
break;
__skb_unlink(pos, lobby);
@@ -932,8 +932,8 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
csid = cevent->stream;
cssn = cevent->ssn;
- if (csid == sid && cssn == sctp_ssn_peek(in, csid)) {
- sctp_ssn_next(in, csid);
+ if (csid == sid && cssn == sctp_ssn_peek(stream, in, csid)) {
+ sctp_ssn_next(stream, in, csid);
__skb_unlink(pos, lobby);
__skb_queue_tail(&temp, pos);
event = sctp_skb2event(pos);
@@ -955,17 +955,17 @@ static void sctp_ulpq_reap_ordered(struct sctp_ulpq *ulpq, __u16 sid)
*/
void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn)
{
- struct sctp_stream *in;
+ struct sctp_stream *stream;
/* Note: The stream ID must be verified before this routine. */
- in = &ulpq->asoc->ssnmap->in;
+ stream = ulpq->asoc->stream;
/* Is this an old SSN? If so ignore. */
- if (SSN_lt(ssn, sctp_ssn_peek(in, sid)))
+ if (SSN_lt(ssn, sctp_ssn_peek(stream, in, sid)))
return;
/* Mark that we are no longer expecting this SSN or lower. */
- sctp_ssn_skip(in, sid, ssn);
+ sctp_ssn_skip(stream, in, sid, ssn);
/* Go find any other chunks that were waiting for
* ordering and deliver them if needed.
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-21 21:56:35 +0000