diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/associola.c | 4 | ||||
| -rw-r--r-- | net/sctp/input.c | 8 | ||||
| -rw-r--r-- | net/sctp/socket.c | 3 |
3 files changed, 14 insertions, 1 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index df94e3cdfba3..498edb0cd4e5 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1231,6 +1231,10 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc) /* Get the lowest pmtu of all the transports. */ list_for_each(pos, &asoc->peer.transport_addr_list) { t = list_entry(pos, struct sctp_transport, transports); + if (t->pmtu_pending && t->dst) { + sctp_transport_update_pmtu(t, dst_mtu(t->dst)); + t->pmtu_pending = 0; + } if (!pmtu || (t->pathmtu < pmtu)) pmtu = t->pathmtu; } diff --git a/net/sctp/input.c b/net/sctp/input.c index 45d6a644cf06..d57ff7f3c576 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -367,9 +367,15 @@ static void sctp_add_backlog(struct sock *sk, struct sk_buff *skb) void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc, struct sctp_transport *t, __u32 pmtu) { - if (sock_owned_by_user(sk) || !t || (t->pathmtu == pmtu)) + if (!t || (t->pathmtu == pmtu)) return; + if (sock_owned_by_user(sk)) { + asoc->pmtu_pending = 1; + t->pmtu_pending = 1; + return; + } + if (t->param_flags & SPP_PMTUD_ENABLE) { /* Update transports view of the MTU */ sctp_transport_update_pmtu(t, pmtu); diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 45510c46c223..6edaaa009d62 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -1662,6 +1662,9 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk, goto out_free; } + if (asoc->pmtu_pending) + sctp_assoc_pending_pmtu(asoc); + /* If fragmentation is disabled and the message length exceeds the * association fragmentation point, return EMSGSIZE. The I-D * does not specify what this error is, but this looks like |