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[BNX2]: Move rx indexes into bnx2_napi struct.

Browse source 
Rx related fields used in NAPI polling are moved from the main
bnx2 struct to the bnx2_napi struct.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2007-12-20 19:57:19 -08:00 committed by David S. Miller
parent a550c99bc3
commit a1f6019090
2 changed files with 64 additions and 56 deletions
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105
drivers/net/bnx2.c
View file

@ -2276,7 +2276,7 @@ bnx2_free_rx_page(struct bnx2 *bp, u16 index)
}
static inline int
bnx2_alloc_rx_skb(struct bnx2 *bp, u16 index)
bnx2_alloc_rx_skb(struct bnx2 *bp, struct bnx2_napi *bnapi, u16 index)
{
struct sk_buff *skb;
struct sw_bd *rx_buf = &bp->rx_buf_ring[index];
@ -2301,7 +2301,7 @@ bnx2_alloc_rx_skb(struct bnx2 *bp, u16 index)
rxbd->rx_bd_haddr_hi = (u64) mapping >> 32;
rxbd->rx_bd_haddr_lo = (u64) mapping & 0xffffffff;
bp->rx_prod_bseq += bp->rx_buf_use_size;
bnapi->rx_prod_bseq += bp->rx_buf_use_size;
return 0;
}
@ -2432,14 +2432,15 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
}
static void
bnx2_reuse_rx_skb_pages(struct bnx2 *bp, struct sk_buff *skb, int count)
bnx2_reuse_rx_skb_pages(struct bnx2 *bp, struct bnx2_napi *bnapi,
struct sk_buff *skb, int count)
{
struct sw_pg *cons_rx_pg, *prod_rx_pg;
struct rx_bd *cons_bd, *prod_bd;
dma_addr_t mapping;
int i;
u16 hw_prod = bp->rx_pg_prod, prod;
u16 cons = bp->rx_pg_cons;
u16 hw_prod = bnapi->rx_pg_prod, prod;
u16 cons = bnapi->rx_pg_cons;
for (i = 0; i < count; i++) {
prod = RX_PG_RING_IDX(hw_prod);
@ -2476,12 +2477,12 @@ bnx2_reuse_rx_skb_pages(struct bnx2 *bp, struct sk_buff *skb, int count)
cons = RX_PG_RING_IDX(NEXT_RX_BD(cons));
hw_prod = NEXT_RX_BD(hw_prod);
}
bp->rx_pg_prod = hw_prod;
bp->rx_pg_cons = cons;
bnapi->rx_pg_prod = hw_prod;
bnapi->rx_pg_cons = cons;
}
static inline void
bnx2_reuse_rx_skb(struct bnx2 *bp, struct sk_buff *skb,
bnx2_reuse_rx_skb(struct bnx2 *bp, struct bnx2_napi *bnapi, struct sk_buff *skb,
u16 cons, u16 prod)
{
struct sw_bd *cons_rx_buf, *prod_rx_buf;
@ -2494,7 +2495,7 @@ bnx2_reuse_rx_skb(struct bnx2 *bp, struct sk_buff *skb,
pci_unmap_addr(cons_rx_buf, mapping),
bp->rx_offset + RX_COPY_THRESH, PCI_DMA_FROMDEVICE);
bp->rx_prod_bseq += bp->rx_buf_use_size;
bnapi->rx_prod_bseq += bp->rx_buf_use_size;
prod_rx_buf->skb = skb;
@ -2511,20 +2512,21 @@ bnx2_reuse_rx_skb(struct bnx2 *bp, struct sk_buff *skb,
}
static int
bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
unsigned int hdr_len, dma_addr_t dma_addr, u32 ring_idx)
bnx2_rx_skb(struct bnx2 *bp, struct bnx2_napi *bnapi, struct sk_buff *skb,
unsigned int len, unsigned int hdr_len, dma_addr_t dma_addr,
u32 ring_idx)
{
int err;
u16 prod = ring_idx & 0xffff;
err = bnx2_alloc_rx_skb(bp, prod);
err = bnx2_alloc_rx_skb(bp, bnapi, prod);
if (unlikely(err)) {
bnx2_reuse_rx_skb(bp, skb, (u16) (ring_idx >> 16), prod);
bnx2_reuse_rx_skb(bp, bnapi, skb, (u16) (ring_idx >> 16), prod);
if (hdr_len) {
unsigned int raw_len = len + 4;
int pages = PAGE_ALIGN(raw_len - hdr_len) >> PAGE_SHIFT;
bnx2_reuse_rx_skb_pages(bp, NULL, pages);
bnx2_reuse_rx_skb_pages(bp, bnapi, NULL, pages);
}
return err;
}
@ -2539,8 +2541,8 @@ bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
} else {
unsigned int i, frag_len, frag_size, pages;
struct sw_pg *rx_pg;
u16 pg_cons = bp->rx_pg_cons;
u16 pg_prod = bp->rx_pg_prod;
u16 pg_cons = bnapi->rx_pg_cons;
u16 pg_prod = bnapi->rx_pg_prod;
frag_size = len + 4 - hdr_len;
pages = PAGE_ALIGN(frag_size) >> PAGE_SHIFT;
@ -2551,9 +2553,10 @@ bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
if (unlikely(frag_len <= 4)) {
unsigned int tail = 4 - frag_len;
bp->rx_pg_cons = pg_cons;
bp->rx_pg_prod = pg_prod;
bnx2_reuse_rx_skb_pages(bp, NULL, pages - i);
bnapi->rx_pg_cons = pg_cons;
bnapi->rx_pg_prod = pg_prod;
bnx2_reuse_rx_skb_pages(bp, bnapi, NULL,
pages - i);
skb->len -= tail;
if (i == 0) {
skb->tail -= tail;
@ -2579,9 +2582,10 @@ bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
err = bnx2_alloc_rx_page(bp, RX_PG_RING_IDX(pg_prod));
if (unlikely(err)) {
bp->rx_pg_cons = pg_cons;
bp->rx_pg_prod = pg_prod;
bnx2_reuse_rx_skb_pages(bp, skb, pages - i);
bnapi->rx_pg_cons = pg_cons;
bnapi->rx_pg_prod = pg_prod;
bnx2_reuse_rx_skb_pages(bp, bnapi, skb,
pages - i);
return err;
}
@ -2593,8 +2597,8 @@ bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
pg_prod = NEXT_RX_BD(pg_prod);
pg_cons = RX_PG_RING_IDX(NEXT_RX_BD(pg_cons));
}
bp->rx_pg_prod = pg_prod;
bp->rx_pg_cons = pg_cons;
bnapi->rx_pg_prod = pg_prod;
bnapi->rx_pg_cons = pg_cons;
}
return 0;
}
@ -2617,8 +2621,8 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
int rx_pkt = 0, pg_ring_used = 0;
hw_cons = bnx2_get_hw_rx_cons(bnapi);
sw_cons = bp->rx_cons;
sw_prod = bp->rx_prod;
sw_cons = bnapi->rx_cons;
sw_prod = bnapi->rx_prod;
/* Memory barrier necessary as speculative reads of the rx
* buffer can be ahead of the index in the status block
@ -2654,7 +2658,8 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
L2_FHDR_ERRORS_TOO_SHORT |
L2_FHDR_ERRORS_GIANT_FRAME)) {
bnx2_reuse_rx_skb(bp, skb, sw_ring_cons, sw_ring_prod);
bnx2_reuse_rx_skb(bp, bnapi, skb, sw_ring_cons,
sw_ring_prod);
goto next_rx;
}
hdr_len = 0;
@ -2673,7 +2678,7 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
new_skb = netdev_alloc_skb(bp->dev, len + 2);
if (new_skb == NULL) {
bnx2_reuse_rx_skb(bp, skb, sw_ring_cons,
bnx2_reuse_rx_skb(bp, bnapi, skb, sw_ring_cons,
sw_ring_prod);
goto next_rx;
}
@ -2684,12 +2689,12 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
skb_reserve(new_skb, 2);
skb_put(new_skb, len);
bnx2_reuse_rx_skb(bp, skb,
bnx2_reuse_rx_skb(bp, bnapi, skb,
sw_ring_cons, sw_ring_prod);
skb = new_skb;
} else if (unlikely(bnx2_rx_skb(bp, skb, len, hdr_len, dma_addr,
(sw_ring_cons << 16) | sw_ring_prod)))
} else if (unlikely(bnx2_rx_skb(bp, bnapi, skb, len, hdr_len,
dma_addr, (sw_ring_cons << 16) | sw_ring_prod)))
goto next_rx;
skb->protocol = eth_type_trans(skb, bp->dev);
@ -2737,16 +2742,16 @@ next_rx:
rmb();
}
}
bp->rx_cons = sw_cons;
bp->rx_prod = sw_prod;
bnapi->rx_cons = sw_cons;
bnapi->rx_prod = sw_prod;
if (pg_ring_used)
REG_WR16(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_PG_BDIDX,
bp->rx_pg_prod);
bnapi->rx_pg_prod);
REG_WR16(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BDIDX, sw_prod);
REG_WR(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BSEQ, bp->rx_prod_bseq);
REG_WR(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BSEQ, bnapi->rx_prod_bseq);
mmiowb();
@ -2845,7 +2850,7 @@ bnx2_has_work(struct bnx2_napi *bnapi)
struct bnx2 *bp = bnapi->bp;
struct status_block *sblk = bp->status_blk;
if ((bnx2_get_hw_rx_cons(bnapi) != bp->rx_cons) ||
if ((bnx2_get_hw_rx_cons(bnapi) != bnapi->rx_cons) ||
(bnx2_get_hw_tx_cons(bnapi) != bnapi->hw_tx_cons))
return 1;
@ -2879,7 +2884,7 @@ static int bnx2_poll_work(struct bnx2 *bp, struct bnx2_napi *bnapi,
if (bnx2_get_hw_tx_cons(bnapi) != bnapi->hw_tx_cons)
bnx2_tx_int(bp, bnapi);
if (bnx2_get_hw_rx_cons(bnapi) != bp->rx_cons)
if (bnx2_get_hw_rx_cons(bnapi) != bnapi->rx_cons)
work_done += bnx2_rx_int(bp, bnapi, budget - work_done);
return work_done;
@ -4432,12 +4437,13 @@ bnx2_init_rx_ring(struct bnx2 *bp)
int i;
u16 prod, ring_prod;
u32 val, rx_cid_addr = GET_CID_ADDR(RX_CID);
struct bnx2_napi *bnapi = &bp->bnx2_napi;
bp->rx_prod = 0;
bp->rx_cons = 0;
bp->rx_prod_bseq = 0;
bp->rx_pg_prod = 0;
bp->rx_pg_cons = 0;
bnapi->rx_prod = 0;
bnapi->rx_cons = 0;
bnapi->rx_prod_bseq = 0;
bnapi->rx_pg_prod = 0;
bnapi->rx_pg_cons = 0;
bnx2_init_rxbd_rings(bp->rx_desc_ring, bp->rx_desc_mapping,
bp->rx_buf_use_size, bp->rx_max_ring);
@ -4473,29 +4479,30 @@ bnx2_init_rx_ring(struct bnx2 *bp)
val = (u64) bp->rx_desc_mapping[0] & 0xffffffff;
CTX_WR(bp, rx_cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
ring_prod = prod = bp->rx_pg_prod;
ring_prod = prod = bnapi->rx_pg_prod;
for (i = 0; i < bp->rx_pg_ring_size; i++) {
if (bnx2_alloc_rx_page(bp, ring_prod) < 0)
break;
prod = NEXT_RX_BD(prod);
ring_prod = RX_PG_RING_IDX(prod);
}
bp->rx_pg_prod = prod;
bnapi->rx_pg_prod = prod;
ring_prod = prod = bp->rx_prod;
ring_prod = prod = bnapi->rx_prod;
for (i = 0; i < bp->rx_ring_size; i++) {
if (bnx2_alloc_rx_skb(bp, ring_prod) < 0) {
if (bnx2_alloc_rx_skb(bp, bnapi, ring_prod) < 0) {
break;
}
prod = NEXT_RX_BD(prod);
ring_prod = RX_RING_IDX(prod);
}
bp->rx_prod = prod;
bnapi->rx_prod = prod;
REG_WR16(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_PG_BDIDX, bp->rx_pg_prod);
REG_WR16(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_PG_BDIDX,
bnapi->rx_pg_prod);
REG_WR16(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BDIDX, prod);
REG_WR(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BSEQ, bp->rx_prod_bseq);
REG_WR(bp, MB_RX_CID_ADDR + BNX2_L2CTX_HOST_BSEQ, bnapi->rx_prod_bseq);
}
static u32 bnx2_find_max_ring(u32 ring_size, u32 max_size)

15
drivers/net/bnx2.h
View file

@ -6512,6 +6512,14 @@ struct bnx2_napi {
u16 tx_cons;
u16 hw_tx_cons;
u32 rx_prod_bseq;
u16 rx_prod;
u16 rx_cons;
u16 rx_pg_prod;
u16 rx_pg_cons;
};
struct bnx2 {
@ -6556,13 +6564,6 @@ struct bnx2 {
u32 rx_max_ring_idx;
u32 rx_max_pg_ring_idx;
u32 rx_prod_bseq;
u16 rx_prod;
u16 rx_cons;
u16 rx_pg_prod;
u16 rx_pg_cons;
u32 rx_csum;
struct sw_bd *rx_buf_ring;