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l2tp: fix data packet sequence number handling 

If enabled, L2TP data packets have sequence numbers which a receiver
can use to drop out of sequence frames or try to reorder them. The
first frame has sequence number 0, but the L2TP code currently expects
it to be 1. This results in the first data frame being handled as out
of sequence.

This one-line patch fixes the problem.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
James Chapman 2012-05-09 23:43:09 +00:00 committed by David S. Miller
parent 38d40b3f4e
commit d301e32568
1 changed files with 1 additions and 1 deletions
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2
net/l2tp/l2tp_core.c
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@ -1762,7 +1762,7 @@ struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunn
session->session_id = session_id;
session->peer_session_id = peer_session_id;
session->nr = 1;
session->nr = 0;
sprintf(&session->name[0], "sess %u/%u",
tunnel->tunnel_id, session->session_id);