diff options
| author | Julian Anastasov <ja@ssi.bg> | 2017-02-06 22:14:13 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-07 19:07:46 +0100 |
| commit | c86a773c78025f5b825bacd7b846f4fa60dc0317 (patch) | |
| tree | 4ccbab5f25aafd2682341852882bb05d45174cbe /net/sctp/output.c | |
| parent | net: add dst_pending_confirm flag to skbuff (diff) | |
| download | linux-c86a773c78025f5b825bacd7b846f4fa60dc0317.tar.xz linux-c86a773c78025f5b825bacd7b846f4fa60dc0317.zip | |
sctp: add dst_pending_confirm flag
Add new transport flag to allow sockets to confirm neighbour.
When same struct dst_entry can be used for many different
neighbours we can not use it for pending confirmations.
The flag is propagated from transport to every packet.
It is reset when cached dst is reset.
Reported-by: YueHaibing <yuehaibing@huawei.com>
Fixes: 5110effee8fd ("net: Do delayed neigh confirmation.")
Fixes: f2bb4bedf35d ("ipv4: Cache output routes in fib_info nexthops.")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/output.c')
| -rw-r--r-- | net/sctp/output.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c index 07ab5062e541..814eac047467 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -546,6 +546,7 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp) struct sctp_association *asoc = tp->asoc; struct sctp_chunk *chunk, *tmp; int pkt_count, gso = 0; + int confirm; struct dst_entry *dst; struct sk_buff *head; struct sctphdr *sh; @@ -624,7 +625,14 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp) asoc->peer.last_sent_to = tp; } head->ignore_df = packet->ipfragok; - tp->af_specific->sctp_xmit(head, tp); + confirm = tp->dst_pending_confirm; + if (confirm) + skb_set_dst_pending_confirm(head, 1); + /* neighbour should be confirmed on successful transmission or + * positive error + */ + if (tp->af_specific->sctp_xmit(head, tp) >= 0 && confirm) + tp->dst_pending_confirm = 0; out: list_for_each_entry_safe(chunk, tmp, &packet->chunk_list, list) { |