From 40c1deaf6c2b42d7ee4e604ba5793cf9da292d96 Mon Sep 17 00:00:00 2001 From: Prashant Sreedharan Date: Wed, 18 Jun 2014 18:38:13 -0700 Subject: [PATCH] tg3: Clear NETIF_F_TSO6 flag before doing software GSO Commit d3f6f3a1d818410c17445bce4f4caab52eb102f1 ("tg3: Prevent page allocation failure during TSO workaround") modified driver logic to use tg3_tso_bug() for any TSO fragment that hits hardware bug conditions thus the patch increased the scope of work for tg3_tso_bug() to cover devices that support NETIF_F_TSO6 as well. Prior to the patch, tg3_tso_bug() would only be used on devices supporting NETIF_F_TSO. A regression was introduced for IPv6 packets requiring the workaround. To properly perform GSO on SKBs with TCPV6 gso_type, we need to call skb_gso_segment() with NETIF_F_TSO6 feature flag cleared, or the function will return NULL and cause a kernel oops as tg3 is not handling a NULL return value. This patch fixes the problem. Signed-off-by: Prashant Sreedharan Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- Reading git-format-patch failed