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-rw-r--r--net/sctp/diag.c15
-rw-r--r--net/sctp/input.c1
-rw-r--r--net/sctp/ipv6.c20
-rw-r--r--net/sctp/protocol.c28
-rw-r--r--net/sctp/sm_statefuns.c29
-rw-r--r--net/sctp/socket.c35
6 files changed, 85 insertions, 43 deletions
diff --git a/net/sctp/diag.c b/net/sctp/diag.c
index 8a15146faaeb..493fc01e5d2b 100644
--- a/net/sctp/diag.c
+++ b/net/sctp/diag.c
@@ -237,15 +237,11 @@ static size_t inet_assoc_attr_size(struct sctp_association *asoc)
addrcnt++;
return nla_total_size(sizeof(struct sctp_info))
- + nla_total_size(1) /* INET_DIAG_SHUTDOWN */
- + nla_total_size(1) /* INET_DIAG_TOS */
- + nla_total_size(1) /* INET_DIAG_TCLASS */
- + nla_total_size(4) /* INET_DIAG_MARK */
- + nla_total_size(4) /* INET_DIAG_CLASS_ID */
+ nla_total_size(addrlen * asoc->peer.transport_count)
+ nla_total_size(addrlen * addrcnt)
- + nla_total_size(sizeof(struct inet_diag_meminfo))
+ nla_total_size(sizeof(struct inet_diag_msg))
+ + inet_diag_msg_attrs_size()
+ + nla_total_size(sizeof(struct inet_diag_meminfo))
+ 64;
}
@@ -432,11 +428,12 @@ static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
sctp_get_sctp_info(sk, infox->asoc, infox->sctpinfo);
}
-static int sctp_diag_dump_one(struct sk_buff *in_skb,
- const struct nlmsghdr *nlh,
+static int sctp_diag_dump_one(struct netlink_callback *cb,
const struct inet_diag_req_v2 *req)
{
+ struct sk_buff *in_skb = cb->skb;
struct net *net = sock_net(in_skb->sk);
+ const struct nlmsghdr *nlh = cb->nlh;
union sctp_addr laddr, paddr;
struct sctp_comm_param commp = {
.skb = in_skb,
@@ -470,7 +467,7 @@ static int sctp_diag_dump_one(struct sk_buff *in_skb,
}
static void sctp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
- const struct inet_diag_req_v2 *r, struct nlattr *bc)
+ const struct inet_diag_req_v2 *r)
{
u32 idiag_states = r->idiag_states;
struct net *net = sock_net(skb->sk);
diff --git a/net/sctp/input.c b/net/sctp/input.c
index efaaefc3bb1c..55d4fc6f371d 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -548,6 +548,7 @@ out:
/* Common cleanup code for icmp/icmpv6 error handler. */
void sctp_err_finish(struct sock *sk, struct sctp_transport *t)
+ __releases(&((__sk)->sk_lock.slock))
{
bh_unlock_sock(sk);
sctp_transport_put(t);
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index bc734cfaa29e..c87af430107a 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -228,7 +228,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
{
struct sctp_association *asoc = t->asoc;
struct dst_entry *dst = NULL;
- struct flowi6 *fl6 = &fl->u.ip6;
+ struct flowi _fl;
+ struct flowi6 *fl6 = &_fl.u.ip6;
struct sctp_bind_addr *bp;
struct ipv6_pinfo *np = inet6_sk(sk);
struct sctp_sockaddr_entry *laddr;
@@ -238,7 +239,7 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
enum sctp_scope scope;
__u8 matchlen = 0;
- memset(fl6, 0, sizeof(struct flowi6));
+ memset(&_fl, 0, sizeof(_fl));
fl6->daddr = daddr->v6.sin6_addr;
fl6->fl6_dport = daddr->v6.sin6_port;
fl6->flowi6_proto = IPPROTO_SCTP;
@@ -276,8 +277,11 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
rcu_read_unlock();
dst = ip6_dst_lookup_flow(sock_net(sk), sk, fl6, final_p);
- if (!asoc || saddr)
+ if (!asoc || saddr) {
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
goto out;
+ }
bp = &asoc->base.bind_addr;
scope = sctp_scope(daddr);
@@ -300,6 +304,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
if ((laddr->a.sa.sa_family == AF_INET6) &&
(sctp_v6_cmp_addr(&dst_saddr, &laddr->a))) {
rcu_read_unlock();
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
goto out;
}
}
@@ -338,6 +344,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
if (!IS_ERR_OR_NULL(dst))
dst_release(dst);
dst = bdst;
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
break;
}
@@ -351,6 +359,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
dst_release(dst);
dst = bdst;
matchlen = bmatchlen;
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
}
rcu_read_unlock();
@@ -359,14 +369,12 @@ out:
struct rt6_info *rt;
rt = (struct rt6_info *)dst;
- t->dst = dst;
t->dst_cookie = rt6_get_cookie(rt);
pr_debug("rt6_dst:%pI6/%d rt6_src:%pI6\n",
&rt->rt6i_dst.addr, rt->rt6i_dst.plen,
- &fl6->saddr);
+ &fl->u.ip6.saddr);
} else {
t->dst = NULL;
-
pr_debug("no route\n");
}
}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 78af2fcf90cc..092d1afdee0d 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -409,7 +409,8 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
{
struct sctp_association *asoc = t->asoc;
struct rtable *rt;
- struct flowi4 *fl4 = &fl->u.ip4;
+ struct flowi _fl;
+ struct flowi4 *fl4 = &_fl.u.ip4;
struct sctp_bind_addr *bp;
struct sctp_sockaddr_entry *laddr;
struct dst_entry *dst = NULL;
@@ -419,7 +420,7 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
if (t->dscp & SCTP_DSCP_SET_MASK)
tos = t->dscp & SCTP_DSCP_VAL_MASK;
- memset(fl4, 0x0, sizeof(struct flowi4));
+ memset(&_fl, 0x0, sizeof(_fl));
fl4->daddr = daddr->v4.sin_addr.s_addr;
fl4->fl4_dport = daddr->v4.sin_port;
fl4->flowi4_proto = IPPROTO_SCTP;
@@ -438,8 +439,11 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
&fl4->saddr);
rt = ip_route_output_key(sock_net(sk), fl4);
- if (!IS_ERR(rt))
+ if (!IS_ERR(rt)) {
dst = &rt->dst;
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
+ }
/* If there is no association or if a source address is passed, no
* more validation is required.
@@ -502,27 +506,33 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
odev = __ip_dev_find(sock_net(sk), laddr->a.v4.sin_addr.s_addr,
false);
if (!odev || odev->ifindex != fl4->flowi4_oif) {
- if (!dst)
+ if (!dst) {
dst = &rt->dst;
- else
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
+ } else {
dst_release(&rt->dst);
+ }
continue;
}
dst_release(dst);
dst = &rt->dst;
+ t->dst = dst;
+ memcpy(fl, &_fl, sizeof(_fl));
break;
}
out_unlock:
rcu_read_unlock();
out:
- t->dst = dst;
- if (dst)
+ if (dst) {
pr_debug("rt_dst:%pI4, rt_src:%pI4\n",
- &fl4->daddr, &fl4->saddr);
- else
+ &fl->u.ip4.daddr, &fl->u.ip4.saddr);
+ } else {
+ t->dst = NULL;
pr_debug("no route\n");
+ }
}
/* For v4, the source address is cached in the route entry(dst). So no need
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 748e3b19ec1d..6a16af4b1ef6 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -170,6 +170,16 @@ static inline bool sctp_chunk_length_valid(struct sctp_chunk *chunk,
return true;
}
+/* Check for format error in an ABORT chunk */
+static inline bool sctp_err_chunk_valid(struct sctp_chunk *chunk)
+{
+ struct sctp_errhdr *err;
+
+ sctp_walk_errors(err, chunk->chunk_hdr);
+
+ return (void *)err == (void *)chunk->chunk_end;
+}
+
/**********************************************************
* These are the state functions for handling chunk events.
**********************************************************/
@@ -2255,6 +2265,9 @@ enum sctp_disposition sctp_sf_shutdown_pending_abort(
sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
return sctp_sf_discard_chunk(net, ep, asoc, type, arg, commands);
+ if (!sctp_err_chunk_valid(chunk))
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+
return __sctp_sf_do_9_1_abort(net, ep, asoc, type, arg, commands);
}
@@ -2298,6 +2311,9 @@ enum sctp_disposition sctp_sf_shutdown_sent_abort(
sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
return sctp_sf_discard_chunk(net, ep, asoc, type, arg, commands);
+ if (!sctp_err_chunk_valid(chunk))
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+
/* Stop the T2-shutdown timer. */
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T2_SHUTDOWN));
@@ -2565,6 +2581,9 @@ enum sctp_disposition sctp_sf_do_9_1_abort(
sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
return sctp_sf_discard_chunk(net, ep, asoc, type, arg, commands);
+ if (!sctp_err_chunk_valid(chunk))
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+
return __sctp_sf_do_9_1_abort(net, ep, asoc, type, arg, commands);
}
@@ -2582,16 +2601,8 @@ static enum sctp_disposition __sctp_sf_do_9_1_abort(
/* See if we have an error cause code in the chunk. */
len = ntohs(chunk->chunk_hdr->length);
- if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr)) {
- struct sctp_errhdr *err;
-
- sctp_walk_errors(err, chunk->chunk_hdr);
- if ((void *)err != (void *)chunk->chunk_end)
- return sctp_sf_pdiscard(net, ep, asoc, type, arg,
- commands);
-
+ if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr))
error = ((struct sctp_errhdr *)chunk->skb->data)->cause;
- }
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR, SCTP_ERROR(ECONNRESET));
/* ASSOC_FAILED will DELETE_TCB. */
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 1b56fc440606..827a9903ee28 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -147,29 +147,44 @@ static void sctp_clear_owner_w(struct sctp_chunk *chunk)
skb_orphan(chunk->skb);
}
+#define traverse_and_process() \
+do { \
+ msg = chunk->msg; \
+ if (msg == prev_msg) \
+ continue; \
+ list_for_each_entry(c, &msg->chunks, frag_list) { \
+ if ((clear && asoc->base.sk == c->skb->sk) || \
+ (!clear && asoc->base.sk != c->skb->sk)) \
+ cb(c); \
+ } \
+ prev_msg = msg; \
+} while (0)
+
static void sctp_for_each_tx_datachunk(struct sctp_association *asoc,
+ bool clear,
void (*cb)(struct sctp_chunk *))
{
+ struct sctp_datamsg *msg, *prev_msg = NULL;
struct sctp_outq *q = &asoc->outqueue;
+ struct sctp_chunk *chunk, *c;
struct sctp_transport *t;
- struct sctp_chunk *chunk;
list_for_each_entry(t, &asoc->peer.transport_addr_list, transports)
list_for_each_entry(chunk, &t->transmitted, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->retransmit, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->sacked, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->abandoned, transmitted_list)
- cb(chunk);
+ traverse_and_process();
list_for_each_entry(chunk, &q->out_chunk_list, list)
- cb(chunk);
+ traverse_and_process();
}
static void sctp_for_each_rx_skb(struct sctp_association *asoc, struct sock *sk,
@@ -5333,14 +5348,14 @@ int sctp_get_sctp_info(struct sock *sk, struct sctp_association *asoc,
EXPORT_SYMBOL_GPL(sctp_get_sctp_info);
/* use callback to avoid exporting the core structure */
-void sctp_transport_walk_start(struct rhashtable_iter *iter)
+void sctp_transport_walk_start(struct rhashtable_iter *iter) __acquires(RCU)
{
rhltable_walk_enter(&sctp_transport_hashtable, iter);
rhashtable_walk_start(iter);
}
-void sctp_transport_walk_stop(struct rhashtable_iter *iter)
+void sctp_transport_walk_stop(struct rhashtable_iter *iter) __releases(RCU)
{
rhashtable_walk_stop(iter);
rhashtable_walk_exit(iter);
@@ -9574,9 +9589,9 @@ static int sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
* paths won't try to lock it and then oldsk.
*/
lock_sock_nested(newsk, SINGLE_DEPTH_NESTING);
- sctp_for_each_tx_datachunk(assoc, sctp_clear_owner_w);
+ sctp_for_each_tx_datachunk(assoc, true, sctp_clear_owner_w);
sctp_assoc_migrate(assoc, newsk);
- sctp_for_each_tx_datachunk(assoc, sctp_set_owner_w);
+ sctp_for_each_tx_datachunk(assoc, false, sctp_set_owner_w);
/* If the association on the newsk is already closed before accept()
* is called, set RCV_SHUTDOWN flag.
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-29 12:15:24 +0100