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authorIan McDonald <ian.mcdonald@jandi.co.nz>2006-07-23 23:33:28 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-24 12:44:21 -0700
commit4b79f0af48d529a360d3529def01835dc5d45fe1 (patch)
tree0d5013514dd5f19a09f9c2d32dee2ba0f4f4827a /net/dccp/ipv6.c
parent8fdf679fdb00f588b65abb9c775c178098a05aeb (diff)
[DCCP]: Fix default sequence window size
When using the default sequence window size (100) I got the following in my logs: Jun 22 14:24:09 localhost kernel: [ 1492.114775] DCCP: Step 6 failed for DATA packet, (LSWL(6279674225) <= P.seqno(6279674749) <= S.SWH(6279674324)) and (P.ackno doesn't exist or LAWL(18798206530) <= P.ackno(1125899906842620) <= S.AWH(18798206548), sending SYNC... Jun 22 14:24:09 localhost kernel: [ 1492.115147] DCCP: Step 6 failed for DATA packet, (LSWL(6279674225) <= P.seqno(6279674750) <= S.SWH(6279674324)) and (P.ackno doesn't exist or LAWL(18798206530) <= P.ackno(1125899906842620) <= S.AWH(18798206549), sending SYNC... I went to alter the default sysctl and it didn't take for new sockets. Below patch fixes this. I think the default is too low but it is what the DCCP spec specifies. As a side effect of this my rx speed using iperf goes from about 2.8 Mbits/sec to 3.5. This is still far too slow but it is a step in the right direction. Compile tested only for IPv6 but not particularly complex change. Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/ipv6.c')
-rw-r--r--net/dccp/ipv6.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index ff42bc43263..9f3d4d7cd0b 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -31,6 +31,7 @@
#include "dccp.h"
#include "ipv6.h"
+#include "feat.h"
/* Socket used for sending RSTs and ACKs */
static struct socket *dccp_v6_ctl_socket;
@@ -707,8 +708,7 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
ireq = inet_rsk(req);
ipv6_addr_copy(&ireq6->rmt_addr, &skb->nh.ipv6h->saddr);
ipv6_addr_copy(&ireq6->loc_addr, &skb->nh.ipv6h->daddr);
- req->rcv_wnd = 100; /* Fake, option parsing will get the
- right value */
+ req->rcv_wnd = dccp_feat_default_sequence_window;
ireq6->pktopts = NULL;
if (ipv6_opt_accepted(sk, skb) ||