[SCTP]: Fix couple of races between sctp_peeloff() and sctp_rcv().
Validate and update the sk in sctp_rcv() to avoid the race where an
assoc/ep could move to a different socket after we get the sk, but before
the skb is added to the backlog.
Also migrate the skb's in backlog queue to new sk when doing a peeloff.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index a553f39..e673b2c 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -175,6 +175,8 @@
void sctp_icmp_proto_unreachable(struct sock *sk,
struct sctp_association *asoc,
struct sctp_transport *t);
+void sctp_backlog_migrate(struct sctp_association *assoc,
+ struct sock *oldsk, struct sock *newsk);
/*
* Section: Macros, externs, and inlines