Commit 8f4fbb9b authored Oct 30, 2012 by Alexander Duyck Committed by Jeff Kirsher Jan 19, 2013

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>

parent 610a63fc

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -5899,6 +5899,9 @@ static int ixgbe_tso(struct ixgbe_ring *tx_ring,
	u32 vlan_macip_lens, type_tucmd;		u32 vlan_macip_lens, type_tucmd;
	u32 mss_l4len_idx, l4len;		u32 mss_l4len_idx, l4len;

			if (skb->ip_summed != CHECKSUM_PARTIAL)
			return 0;

	if (!skb_is_gso(skb))		if (!skb_is_gso(skb))
	return 0;		return 0;