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| author | Stephen Hemminger | 2009-08-18 17:17:09 +0200 |
|---|---|---|
| committer | David S. Miller | 2009-08-19 05:26:51 +0200 |
| commit | 6b84dacadbdc3dab6a5b313d20d5a93b0d998641 (patch) | |
| tree | 20bd2d8b320f5a33da98b217fe0506757563cb66 /drivers/net/sky2.h | |
| parent | sky2: dynamic size transmit ring (diff) | |
| download | kernel-qcow2-linux-6b84dacadbdc3dab6a5b313d20d5a93b0d998641.tar.gz kernel-qcow2-linux-6b84dacadbdc3dab6a5b313d20d5a93b0d998641.tar.xz kernel-qcow2-linux-6b84dacadbdc3dab6a5b313d20d5a93b0d998641.zip | |
sky2: optimize transmit completion
Don't reference the list element in hardware transmit ring on transmit
completion. The list element is updated by hardware, therefore
it causes a cache miss. Do book keeping in software structure.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sky2.h')
| -rw-r--r-- | drivers/net/sky2.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h index 2c262f763f93..9d07a466aec1 100644 --- a/drivers/net/sky2.h +++ b/drivers/net/sky2.h @@ -1984,6 +1984,9 @@ struct sky2_status_le { struct tx_ring_info { struct sk_buff *skb; + unsigned long flags; +#define TX_MAP_SINGLE 0x0001 +#define TX_MAP_PAGE 000002 DECLARE_PCI_UNMAP_ADDR(mapaddr); DECLARE_PCI_UNMAP_LEN(maplen); }; |