Dave,
please can you consider the following bug fix (applies on both net-2.6 and
net-next-2.6). I have no other dccp patches this week -- the second one that
follows is for the test tree only and is meant for RFC.
Best regards
Gerrit
(also on git://eden-feed.erg.abdn.ac.uk/net-next-2.6 [subtree 'dccp'])
>>>>>>>>>>>>>>>>>>>>>>>>>>>> Patch / Fix <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
dccp: fix error in updating the GAR
This fixes a bug in updating the Greatest Acknowledgment number Received (GAR):
the current implementation does not track the greatest received value -
lower values in the range AWL..AWH (RFC 4340, 7.5.1) erase higher ones.
Signed-off-by: Gerrit Renker <gerrit@xxxxxxxxxxxxxx>
---
net/dccp/input.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -241,7 +241,8 @@ static int dccp_check_seqno(struct sock
dccp_update_gsr(sk, seqno);
if (dh->dccph_type != DCCP_PKT_SYNC &&
- (ackno != DCCP_PKT_WITHOUT_ACK_SEQ))
+ ackno != DCCP_PKT_WITHOUT_ACK_SEQ &&
+ after48(ackno, dp->dccps_gar))
dp->dccps_gar = ackno;
} else {
unsigned long now = jiffies;
--
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