Commit ed6aa105 authored Nov 13, 2012 by Alexander Duyck Committed by David S. Miller Nov 13, 2012

igb: 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
igb_tx_csum call we start with that check as well.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 039454a8

drivers/net/ethernet/intel/igb/igb_main.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -3998,6 +3998,9 @@ static int igb_tso(struct igb_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;