Just a little nitpick. The original title/subj was: "ipvs: IPv6 MTU checking cleanup and bugfix" And the curr/used title/subj were part of the commit text. On Tue, 28 Aug 2012, Patrick McHardy wrote:
From: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Insert: Cleaning up the IPv6 MTU checking in the IPVS xmit code, by using a common helper function __mtu_check_toobig_v6().
The MTU check for tunnel mode can also use this helper as ntohs(old_iph->payload_len) + sizeof(struct ipv6hdr) is qual to skb->len. And the 'mtu' variable have been adjusted before calling helper. Notice, this also fixes a bug, as the the MTU check in ip_vs_dr_xmit_v6() were missing a check for skb_is_gso(). This bug e.g. caused issues for KVM IPVS setups, where different Segmentation Offloading techniques are utilized, between guests, via the virtio driver. This resulted in very bad performance, due to the ICMPv6 "too big" messages didn't affect the sender. Signed-off-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx> --- net/netfilter/ipvs/ip_vs_xmit.c | 21 +++++++++++++++------ 1 files changed, 15 insertions(+), 6 deletions(-)
[cut] Hilsen Jesper Brouer -- ------------------------------------------------------------------- MSc. Master of Computer Science Dept. of Computer Science, University of Copenhagen Author of http://www.adsl-optimizer.dk ------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
