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authorAlexander Duyck <alexander.h.duyck@intel.com>2012-10-30 06:01:40 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2013-01-19 03:45:56 -0800
commit8f4fbb9bfc8f0eac8932d45f57e29507d5b631a3 (patch)
tree96e18db2b15fa5bd3fc4bcb249185ba800917ac4
parent610a63fc8ef903a11921bb48f26fd4d34aacd3c0 (diff)
ixgbe: Make TSO check for CHECKSUM_PARTIAL to avoid skb_is_gso check
This change is meant to reduce the overhead for workloads that are not using either TSO or checksum offloads. Most of the time the compiler should jump ahead after failing this check to the VLAN check since in the ixgbe_tx_csum call we start with that check as well. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 20d6764cedc8..e197cc2493eb 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5899,6 +5899,9 @@ static int ixgbe_tso(struct ixgbe_ring *tx_ring,
u32 vlan_macip_lens, type_tucmd;
u32 mss_l4len_idx, l4len;
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return 0;
+
if (!skb_is_gso(skb))
return 0;