luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

spidernet: turn off descriptor chain end interrupt.

Browse Source 
At some point, the transmit descriptor chain end interrupt (TXDCEINT)
was turned on. This is a mistake; and it damages small packet
transmit performance, as it results in a huge storm of interrupts.
Turn it off.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Linas Vepstas 2007-06-11 13:29:03 -05:00 committed by Jeff Garzik
parent c3d1182a53
commit 128c6e2e51
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/spider_net.h
View File

@ -222,6 +222,7 @@ extern char spider_net_driver_name[];
#define SPIDER_NET_GDTBSTA 0x00000300 #define SPIDER_NET_GDTBSTA 0x00000300
#define SPIDER_NET_GDTDCEIDIS 0x00000002 #define SPIDER_NET_GDTDCEIDIS 0x00000002
#define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \ #define SPIDER_NET_DMA_TX_VALUE SPIDER_NET_TX_DMA_EN | \
SPIDER_NET_GDTDCEIDIS | \
SPIDER_NET_GDTBSTA SPIDER_NET_GDTBSTA
#define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003 #define SPIDER_NET_DMA_TX_FEND_VALUE 0x00030003
@ -332,8 +333,7 @@ enum spider_net_int2_status {
SPIDER_NET_GRISPDNGINT SPIDER_NET_GRISPDNGINT
}; };
#define SPIDER_NET_TXINT ( (1 << SPIDER_NET_GDTFDCINT) | \ #define SPIDER_NET_TXINT (1 << SPIDER_NET_GDTFDCINT)
(1 << SPIDER_NET_GDTDCEINT) )
/* We rely on flagged descriptor interrupts */ /* We rely on flagged descriptor interrupts */
#define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) ) #define SPIDER_NET_RXINT ( (1 << SPIDER_NET_GDAFDCINT) )