| Message ID | 1382956231-14596-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/net/sctp/output.c b/net/sctp/output.c index a80b310..a1e2a9b 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -524,7 +524,7 @@ int sctp_packet_transmit(struct sctp_packet *packet) */ if (!sctp_checksum_disable) { if (!(dst->dev->features & NETIF_F_SCTP_CSUM) || - (dst_xfrm(dst) != NULL)) { + (dst_xfrm(dst) != NULL) || packet->ipfragok) { __u32 crc32 = sctp_start_cksum((__u8 *)sh, cksum_buf_len); /* 3) Put the resultant value into the checksum field in the
This is a note to let you know that I have just added a patch titled sctp: Perform software checksum if packet has to be to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From c6f203f8377a1d6848413db51c172583276568ce Mon Sep 17 00:00:00 2001 From: Vlad Yasevich <vyasevich@gmail.com> Date: Tue, 15 Oct 2013 22:01:31 -0400 Subject: [PATCH] sctp: Perform software checksum if packet has to be fragmented. commit d2dbbba77e95dff4b4f901fee236fef6d9552072 upstream. IP/IPv6 fragmentation knows how to compute only TCP/UDP checksum. This causes problems if SCTP packets has to be fragmented and ipsummed has been set to PARTIAL due to checksum offload support. This condition can happen when retransmitting after MTU discover, or when INIT or other control chunks are larger then MTU. Check for the rare fragmentation condition in SCTP and use software checksum calculation in this case. CC: Fan Du <fan.du@windriver.com> Signed-off-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- net/sctp/output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 1.8.3.2