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dccp: fix return value for sequence-invalid packets 

Currently dccp_check_seqno returns 0 (indicating a valid packet) if the
acknowledgment number is out of bounds and the sync that RFC 4340 mandates at
this point is currently being rate-limited. This function should return -1,
indicating an invalid packet.

Signed-off-by: Samuel Jero <sj323707@ohio.edu>
Acked-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
This commit is contained in:
Samuel Jero 2010-12-30 12:15:16 +01:00 committed by Gerrit Renker
parent 4e3dbdb139
commit 2cf5be93d1
1 changed files with 1 additions and 1 deletions
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2
net/dccp/input.c
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@ -260,7 +260,7 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
*/ */
if (time_before(now, (dp->dccps_rate_last + if (time_before(now, (dp->dccps_rate_last +
sysctl_dccp_sync_ratelimit))) sysctl_dccp_sync_ratelimit)))
return 0; return -1;
DCCP_WARN("Step 6 failed for %s packet, " DCCP_WARN("Step 6 failed for %s packet, "
"(LSWL(%llu) <= P.seqno(%llu) <= S.SWH(%llu)) and " "(LSWL(%llu) <= P.seqno(%llu) <= S.SWH(%llu)) and "