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cxgb3 - sge page management

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Streamline sge page management.
Fix dma mappings when buffers are recycled.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Divy Le Ray
2007-05-30 21:10:47 -07:00
committed by Jeff Garzik
parent 287aa83dff
commit cf992af561
2 changed files with 232 additions and 229 deletions
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38
drivers/net/cxgb3/adapter.h
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@ -71,27 +71,29 @@ enum { /* adapter flags */
QUEUES_BOUND = (1 << 3),
};
struct fl_pg_chunk {
struct page *page;
void *va;
unsigned int offset;
};
struct rx_desc;
struct rx_sw_desc;
struct sge_fl_page {
struct skb_frag_struct frag;
unsigned char *va;
};
struct sge_fl { /* SGE per free-buffer list state */
unsigned int buf_size; /* size of each Rx buffer */
unsigned int credits; /* # of available Rx buffers */
unsigned int size; /* capacity of free list */
unsigned int cidx; /* consumer index */
unsigned int pidx; /* producer index */
unsigned int gen; /* free list generation */
unsigned int cntxt_id; /* SGE context id for the free list */
struct sge_fl_page page;
struct rx_desc *desc; /* address of HW Rx descriptor ring */
struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */
dma_addr_t phys_addr; /* physical address of HW ring start */
unsigned long empty; /* # of times queue ran out of buffers */
struct sge_fl { /* SGE per free-buffer list state */
unsigned int buf_size; /* size of each Rx buffer */
unsigned int credits; /* # of available Rx buffers */
unsigned int size; /* capacity of free list */
unsigned int cidx; /* consumer index */
unsigned int pidx; /* producer index */
unsigned int gen; /* free list generation */
struct fl_pg_chunk pg_chunk;/* page chunk cache */
unsigned int use_pages; /* whether FL uses pages or sk_buffs */
struct rx_desc *desc; /* address of HW Rx descriptor ring */
struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */
dma_addr_t phys_addr; /* physical address of HW ring start */
unsigned int cntxt_id; /* SGE context id for the free list */
unsigned long empty; /* # of times queue ran out of buffers */
unsigned long alloc_failed; /* # of times buffer allocation failed */
};