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sctp: add dst_pending_confirm flag

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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: 5110effee8 ("net: Do delayed neigh confirmation.")
Fixes: f2bb4bedf3 ("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>
This commit is contained in:
Julian Anastasov
2017-02-06 23:14:13 +02:00
committed by David S. Miller
parent 4ff0620354
commit c86a773c78
9 changed files with 37 additions and 16 deletions
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2
net/sctp/sm_sideeffect.c
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@@ -755,7 +755,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds,
* forward progress.
*/
if (t->dst)
dst_confirm(t->dst);
sctp_transport_dst_confirm(t);
/* The receiver of the HEARTBEAT ACK should also perform an
* RTT measurement for that destination transport address