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Diffstat (limited to 'net/sctp/ulpevent.c')
-rw-r--r--net/sctp/ulpevent.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index bfecb353ab3d..5dc094b9732d 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -685,6 +685,24 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
struct sctp_ulpevent *event = NULL;
struct sk_buff *skb;
size_t padding, len;
+ int rx_count;
+
+ /*
+ * check to see if we need to make space for this
+ * new skb, expand the rcvbuffer if needed, or drop
+ * the frame
+ */
+ if (asoc->ep->rcvbuf_policy)
+ rx_count = atomic_read(&asoc->rmem_alloc);
+ else
+ rx_count = atomic_read(&asoc->base.sk->sk_rmem_alloc);
+
+ if (rx_count >= asoc->base.sk->sk_rcvbuf) {
+
+ if ((asoc->base.sk->sk_userlocks & SOCK_RCVBUF_LOCK) ||
+ (!sk_stream_rmem_schedule(asoc->base.sk, chunk->skb)))
+ goto fail;
+ }
/* Clone the original skb, sharing the data. */
skb = skb_clone(chunk->skb, gfp);