diff options
| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2016-04-01 13:56:06 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-04-07 04:26:23 +0300 |
| commit | 1f15d66712bb64e39fe2c23b1b32f68f9e1d4ee7 (patch) | |
| tree | 78c5fda55e9acd9e39164c60d3624a50c8eb3664 /drivers/net/ethernet/intel/i40evf/i40e_txrx.h | |
| parent | 84b079928a10559ebc6679e1e973a3ee5b20ba83 (diff) | |
| download | linux-1f15d66712bb64e39fe2c23b1b32f68f9e1d4ee7.tar.xz | |
i40e/i40evf: Faster RX via avoiding FCoE
As it turns out, calling into other files from hot path hurts
performance a lot. In this case the majority of the time we
call "check FCoE" and the packet is *not* FCoE, but this call
was taking 5% of our total cycles spent on receive.
Change-ID: I080552c26e7060bc7b78504dc2763f6f0b3d8c76
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40e_txrx.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h index 3ec0ea5ea3db..84c28aa64fdf 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h @@ -430,4 +430,14 @@ static inline bool i40e_chk_linearize(struct sk_buff *skb, int count) return __i40evf_chk_linearize(skb); } + +/** + * i40e_rx_is_fcoe - returns true if the Rx packet type is FCoE + * @ptype: the packet type field from Rx descriptor write-back + **/ +static inline bool i40e_rx_is_fcoe(u16 ptype) +{ + return (ptype >= I40E_RX_PTYPE_L2_FCOE_PAY3) && + (ptype <= I40E_RX_PTYPE_L2_FCOE_VFT_FCOTHER); +} #endif /* _I40E_TXRX_H_ */ |