This is a note to let you know that I've just added the patch titled
sctp: Use software crc32 checksum when xfrm transform will happen.
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sctp-use-software-crc32-checksum-when-xfrm-transform-will-happen.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8039b7fa7a658a8035e6b9b371d1754b6f2b4cac Mon Sep 17 00:00:00 2001
From: Fan Du <fan.du@xxxxxxxxxxxxx>
Date: Tue, 15 Oct 2013 22:01:30 -0400
Subject: sctp: Use software crc32 checksum when xfrm transform will happen.
From: Fan Du <fan.du@xxxxxxxxxxxxx>
[ Upstream commit 27127a82561a2a3ed955ce207048e1b066a80a2a ]
igb/ixgbe have hardware sctp checksum support, when this feature is enabled
and also IPsec is armed to protect sctp traffic, ugly things happened as
xfrm_output checks CHECKSUM_PARTIAL to do checksum operation(sum every thing
up and pack the 16bits result in the checksum field). The result is fail
establishment of sctp communication.
Signed-off-by: Fan Du <fan.du@xxxxxxxxxxxxx>
Cc: Neil Horman <nhorman@xxxxxxxxxxxxx>
Cc: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Vlad Yasevich <vyasevich@xxxxxxxxx>
Acked-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/sctp/output.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -518,7 +518,8 @@ int sctp_packet_transmit(struct sctp_pac
* by CRC32-C as described in <draft-ietf-tsvwg-sctpcsum-02.txt>.
*/
if (!sctp_checksum_disable) {
- if (!(dst->dev->features & NETIF_F_SCTP_CSUM)) {
+ if (!(dst->dev->features & NETIF_F_SCTP_CSUM) ||
+ (dst_xfrm(dst) != NULL)) {
__u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len);
/* 3) Put the resultant value into the checksum field in the
Patches currently in stable-queue which might be from fan.du@xxxxxxxxxxxxx are
queue-3.4/sctp-use-software-crc32-checksum-when-xfrm-transform-will-happen.patch
queue-3.4/sctp-perform-software-checksum-if-packet-has-to-be-fragmented.patch
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