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| author |   Yi Zou <yi.zou@intel.com> | 2012-03-16 23:08:11 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-03-19 17:37:35 -0400 |
| commit | cdbee74ce74cd66de42a6f6d0edfa74fa9a66f2a (patch) | |
| tree | a474de30581af399a5024dd69bfa67dced47b8c5 | |
| parent | ixgbe: Fix issues with SR-IOV loopback when flow control is disabled (diff) | |
| download | linux-dev-cdbee74ce74cd66de42a6f6d0edfa74fa9a66f2a.tar.xz linux-dev-cdbee74ce74cd66de42a6f6d0edfa74fa9a66f2a.zip | |
net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso
This is related to fixing the bug of dropping FCoE frames when disabling tx ip
checksum by 'ethtool -K ethx tx off'. The FCoE protocol stack driver would
use CHECKSUM_UNNECESSARY on tx path instead of CHECKSUM_PARTIAL (as indicated in
the 2/2 of this series). To do so, netif_needs_gso() has to be changed here to
not do gso for both CHECKSUM_PARTIAL and CHECKSUM_UNNECESSARY.
Ref. to original discussion thread:
http://patchwork.ozlabs.org/patch/146567/
Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/netdevice.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4535a4ea9760..261067b94559 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2657,7 +2657,8 @@ static inline bool netif_needs_gso(struct sk_buff *skb, netdev_features_t features) { return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || - unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); + unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && + (skb->ip_summed != CHECKSUM_UNNECESSARY))); } static inline void netif_set_gso_max_size(struct net_device *dev, |