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authorNeil Horman <nhorman@redhat.com>2005-06-13 18:11:24 -0400
committerDavid S. Miller <davem@davemloft.net>2005-06-13 18:11:24 -0400
commit0fd9a65a76e883b7d16e72dde3f8bf20ebc1e82a (patch)
tree431da2afc6344a078d16cd5b6b1e65fde9df29d1 /net/sctp
parent4243cac1e76228f7ba916d5df9e75a219352160a (diff)
[SCTP] Support SO_BINDTODEVICE socket option on incoming packets.
Signed-off-by: Neil Horman <nhorman@redhat.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/input.c49
1 files changed, 34 insertions, 15 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c
index b719a77d66b4..fffc880a646d 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -178,6 +178,37 @@ int sctp_rcv(struct sk_buff *skb)
178 178
179 asoc = __sctp_rcv_lookup(skb, &src, &dest, &transport); 179 asoc = __sctp_rcv_lookup(skb, &src, &dest, &transport);
180 180
181 if (!asoc)
182 ep = __sctp_rcv_lookup_endpoint(&dest);
183
184 /* Retrieve the common input handling substructure. */
185 rcvr = asoc ? &asoc->base : &ep->base;
186 sk = rcvr->sk;
187
188 /*
189 * If a frame arrives on an interface and the receiving socket is
190 * bound to another interface, via SO_BINDTODEVICE, treat it as OOTB
191 */
192 if (sk->sk_bound_dev_if && (sk->sk_bound_dev_if != af->skb_iif(skb)))
193 {
194 sock_put(sk);
195 if (asoc) {
196 sctp_association_put(asoc);
197 asoc = NULL;
198 } else {
199 sctp_endpoint_put(ep);
200 ep = NULL;
201 }
202 sk = sctp_get_ctl_sock();
203 ep = sctp_sk(sk)->ep;
204 sctp_endpoint_hold(ep);
205 sock_hold(sk);
206 rcvr = &ep->base;
207 }
208
209 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
210 goto discard_release;
211
181 /* 212 /*
182 * RFC 2960, 8.4 - Handle "Out of the blue" Packets. 213 * RFC 2960, 8.4 - Handle "Out of the blue" Packets.
183 * An SCTP packet is called an "out of the blue" (OOTB) 214 * An SCTP packet is called an "out of the blue" (OOTB)
@@ -187,22 +218,12 @@ int sctp_rcv(struct sk_buff *skb)
187 * packet belongs. 218 * packet belongs.
188 */ 219 */
189 if (!asoc) { 220 if (!asoc) {
190 ep = __sctp_rcv_lookup_endpoint(&dest);
191 if (sctp_rcv_ootb(skb)) { 221 if (sctp_rcv_ootb(skb)) {
192 SCTP_INC_STATS_BH(SCTP_MIB_OUTOFBLUES); 222 SCTP_INC_STATS_BH(SCTP_MIB_OUTOFBLUES);
193 goto discard_release; 223 goto discard_release;
194 } 224 }
195 } 225 }
196 226
197 /* Retrieve the common input handling substructure. */
198 rcvr = asoc ? &asoc->base : &ep->base;
199 sk = rcvr->sk;
200
201 if ((sk) && (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)) {
202 goto discard_release;
203 }
204
205
206 /* SCTP seems to always need a timestamp right now (FIXME) */ 227 /* SCTP seems to always need a timestamp right now (FIXME) */
207 if (skb->stamp.tv_sec == 0) { 228 if (skb->stamp.tv_sec == 0) {
208 do_gettimeofday(&skb->stamp); 229 do_gettimeofday(&skb->stamp);
@@ -265,13 +286,11 @@ discard_it:
265 286
266discard_release: 287discard_release:
267 /* Release any structures we may be holding. */ 288 /* Release any structures we may be holding. */
268 if (asoc) { 289 sock_put(sk);
269 sock_put(asoc->base.sk); 290 if (asoc)
270 sctp_association_put(asoc); 291 sctp_association_put(asoc);
271 } else { 292 else
272 sock_put(ep->base.sk);
273 sctp_endpoint_put(ep); 293 sctp_endpoint_put(ep);
274 }
275 294
276 goto discard_it; 295 goto discard_it;
277} 296}