diff options
| author |   Prashant Sreedharan <prashant@broadcom.com> | 2014-06-18 18:38:13 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-06-19 20:55:49 -0700 |
| commit | 40c1deaf6c2b42d7ee4e604ba5793cf9da292d96 (patch) | |
| tree | d029ec5177916822721a345c1f1c9c95780b726e /drivers/net/ethernet/broadcom/tg3.c | |
| parent | tcp: fix tcp_match_skb_to_sack() for unaligned SACK at end of an skb (diff) | |
| download | linux-dev-40c1deaf6c2b42d7ee4e604ba5793cf9da292d96.tar.xz linux-dev-40c1deaf6c2b42d7ee4e604ba5793cf9da292d96.zip | |
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 <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/tg3.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index df2792d8383d..c2ff6881a673 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -7854,8 +7854,8 @@ static int tg3_tso_bug(struct tg3 *tp, struct sk_buff *skb) netif_wake_queue(tp->dev); } - segs = skb_gso_segment(skb, tp->dev->features & ~NETIF_F_TSO); - if (IS_ERR(segs)) + segs = skb_gso_segment(skb, tp->dev->features & ~(NETIF_F_TSO | NETIF_F_TSO6)); + if (IS_ERR(segs) || !segs) goto tg3_tso_bug_end; do { |