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ixgbevf: fix handling of tx checksumming 

This patch resolves an issue introduced by:
commit 7ad1a09351
ixgbevf: make the first tx_buffer a repository for most of the skb info

Incorrect check for the result of ixgbevf_tso() can lead to calling
ixgbevf_tx_csum() which can spawn 2 context descriptors and result in
performance degradation and/or corrupted packets.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Emil Tantilov 2014-02-27 20:32:44 -08:00 committed by David S. Miller
parent c97506ab0e
commit b5d217f3a7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
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@ -3155,7 +3155,7 @@ static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
tso = ixgbevf_tso(tx_ring, first, &hdr_len);
if (tso < 0)
goto out_drop;
else
else if (!tso)
ixgbevf_tx_csum(tx_ring, first);
ixgbevf_tx_map(tx_ring, first, hdr_len);