From 74e238eada573540f82530f8ae4f3343c023d774 Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Sat, 2 Feb 2013 05:07:11 +0000
Subject: igb: Support using build_skb in the case that jumbo frames are
disabled
This change makes it so that we can enable the use of build_skb for cases
where jumbo frames are disabled. The advantage to this is that we do not
have to perform a memcpy to populate the header and as a result we see a
significant performance improvement.
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>
---
drivers/net/ethernet/intel/igb/igb.h | 8 ++++++++
1 file changed, 8 insertions(+)
(limited to 'drivers/net/ethernet/intel/igb/igb.h')
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index 4b78053592ba..afdb8bbcf6ce 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -275,10 +275,18 @@ struct igb_q_vector {
enum e1000_ring_flags_t {
IGB_RING_FLAG_RX_SCTP_CSUM,
IGB_RING_FLAG_RX_LB_VLAN_BSWAP,
+ IGB_RING_FLAG_RX_BUILD_SKB_ENABLED,
IGB_RING_FLAG_TX_CTX_IDX,
IGB_RING_FLAG_TX_DETECT_HANG
};
+#define ring_uses_build_skb(ring) \
+ test_bit(IGB_RING_FLAG_RX_BUILD_SKB_ENABLED, &(ring)->flags)
+#define set_ring_build_skb_enabled(ring) \
+ set_bit(IGB_RING_FLAG_RX_BUILD_SKB_ENABLED, &(ring)->flags)
+#define clear_ring_build_skb_enabled(ring) \
+ clear_bit(IGB_RING_FLAG_RX_BUILD_SKB_ENABLED, &(ring)->flags)
+
#define IGB_TXD_DCMD (E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_RS)
#define IGB_RX_DESC(R, i) \
--
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