Revision 22e1170310ec6afa41e0dc7ac9dfac735d82dcab authored by Stephen Hemminger on 12 July 2006, 22:23:48 UTC, committed by Jeff Garzik on 12 July 2006, 22:39:22 UTC
When the driver handles multiple packets per NAPI poll, it is better to reload the receive ring, then tell the hardware. Otherwise, under packet storm with flow control, the driver/hardware will degrade down to one packet getting through per pause-exchange. Likewise on transmit, don't wakeup until a little more than minimum ring space is available. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
1 parent afa195d
scatterlist.h
#ifndef __ASM_CRIS_SCATTERLIST_H
#define __ASM_CRIS_SCATTERLIST_H
struct scatterlist {
char * address; /* Location data is to be transferred to */
unsigned int length;
/* The following is i386 highmem junk - not used by us */
struct page * page; /* Location for highmem page, if any */
unsigned int offset;/* for highmem, page offset */
};
#define sg_dma_address(sg) ((sg)->address)
#define sg_dma_len(sg) ((sg)->length)
/* i386 junk */
#define ISA_DMA_THRESHOLD (0x1fffffff)
#endif /* !(__ASM_CRIS_SCATTERLIST_H) */
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