leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ixgbe: Place skb on first buffer_info structure to avoid using stack space

Browse Source 
Instead of keeping a local copy of the skb on the stack for as long as long
as we do it makes sense to instead just place it on the first tx_buffer
structure so that we can save space on the stack and avoid unnecessary
read/write operations copying the pointer out of the stack and onto the
ring later.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2012-02-08 07:50:56 +00:00
committed by Jeff Kirsher
parent 7d7ce682f8
commit fd0db0ed02
3 changed files with 41 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
View File

@@ -447,7 +447,7 @@ ddp_out:
/**
* ixgbe_fso - ixgbe FCoE Sequence Offload (FSO)
* @tx_ring: tx desc ring
* @skb: associated skb
* @first: first tx_buffer structure containing skb, tx_flags, and protocol
* @tx_flags: tx flags
* @hdr_len: hdr_len to be returned
*
@@ -455,9 +455,11 @@ ddp_out:
*
* Returns : 0 indicates no FSO, > 0 for FSO, < 0 for error
*/
int ixgbe_fso(struct ixgbe_ring *tx_ring, struct sk_buff *skb,
int ixgbe_fso(struct ixgbe_ring *tx_ring,
struct ixgbe_tx_buffer *first,
u32 tx_flags, u8 *hdr_len)
{
struct sk_buff *skb = first->skb;
struct fc_frame_header *fh;
u32 vlan_macip_lens;
u32 fcoe_sof_eof = 0;