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[BNX2]: Move tx indexes into bnx2_napi struct. 

Tx 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 19:56:59 -08:00 committed by David S. Miller
parent 35efa7c1f4
commit a550c99bc3
2 changed files with 20 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/net/bnx2.c
View File

@ -226,7 +226,7 @@ static struct flash_spec flash_5709 = {
MODULE_DEVICE_TABLE(pci, bnx2_pci_tbl);
static inline u32 bnx2_tx_avail(struct bnx2 *bp)
static inline u32 bnx2_tx_avail(struct bnx2 *bp, struct bnx2_napi *bnapi)
{
u32 diff;
@ -235,7 +235,7 @@ static inline u32 bnx2_tx_avail(struct bnx2 *bp)
/* The ring uses 256 indices for 255 entries, one of them
* needs to be skipped.
*/
diff = bp->tx_prod - bp->tx_cons;
diff = bp->tx_prod - bnapi->tx_cons;
if (unlikely(diff >= TX_DESC_CNT)) {
diff &= 0xffff;
if (diff == TX_DESC_CNT)
@ -2358,7 +2358,7 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
int tx_free_bd = 0;
hw_cons = bnx2_get_hw_tx_cons(bnapi);
sw_cons = bp->tx_cons;
sw_cons = bnapi->tx_cons;
while (sw_cons != hw_cons) {
struct sw_bd *tx_buf;
@ -2412,8 +2412,8 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
hw_cons = bnx2_get_hw_tx_cons(bnapi);
}
bp->hw_tx_cons = hw_cons;
bp->tx_cons = sw_cons;
bnapi->hw_tx_cons = hw_cons;
bnapi->tx_cons = sw_cons;
/* Need to make the tx_cons update visible to bnx2_start_xmit()
* before checking for netif_queue_stopped(). Without the
* memory barrier, there is a small possibility that bnx2_start_xmit()
@ -2422,10 +2422,10 @@ bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
smp_mb();
if (unlikely(netif_queue_stopped(bp->dev)) &&
(bnx2_tx_avail(bp) > bp->tx_wake_thresh)) {
(bnx2_tx_avail(bp, bnapi) > bp->tx_wake_thresh)) {
netif_tx_lock(bp->dev);
if ((netif_queue_stopped(bp->dev)) &&
(bnx2_tx_avail(bp) > bp->tx_wake_thresh))
(bnx2_tx_avail(bp, bnapi) > bp->tx_wake_thresh))
netif_wake_queue(bp->dev);
netif_tx_unlock(bp->dev);
}
@ -2846,7 +2846,7 @@ bnx2_has_work(struct bnx2_napi *bnapi)
struct status_block *sblk = bp->status_blk;
if ((bnx2_get_hw_rx_cons(bnapi) != bp->rx_cons) ||
(bnx2_get_hw_tx_cons(bnapi) != bp->hw_tx_cons))
(bnx2_get_hw_tx_cons(bnapi) != bnapi->hw_tx_cons))
return 1;
if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) !=
@ -2876,7 +2876,7 @@ static int bnx2_poll_work(struct bnx2 *bp, struct bnx2_napi *bnapi,
REG_RD(bp, BNX2_HC_COMMAND);
}
if (bnx2_get_hw_tx_cons(bnapi) != bp->hw_tx_cons)
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)
@ -4381,6 +4381,7 @@ bnx2_init_tx_ring(struct bnx2 *bp)
{
struct tx_bd *txbd;
u32 cid;
struct bnx2_napi *bnapi = &bp->bnx2_napi;
bp->tx_wake_thresh = bp->tx_ring_size / 2;
@ -4390,8 +4391,8 @@ bnx2_init_tx_ring(struct bnx2 *bp)
txbd->tx_bd_haddr_lo = (u64) bp->tx_desc_mapping & 0xffffffff;
bp->tx_prod = 0;
bp->tx_cons = 0;
bp->hw_tx_cons = 0;
bnapi->tx_cons = 0;
bnapi->hw_tx_cons = 0;
bp->tx_prod_bseq = 0;
cid = TX_CID;
@ -5440,8 +5441,10 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
u32 len, vlan_tag_flags, last_frag, mss;
u16 prod, ring_prod;
int i;
struct bnx2_napi *bnapi = &bp->bnx2_napi;
if (unlikely(bnx2_tx_avail(bp) < (skb_shinfo(skb)->nr_frags + 1))) {
if (unlikely(bnx2_tx_avail(bp, bnapi) <
(skb_shinfo(skb)->nr_frags + 1))) {
netif_stop_queue(dev);
printk(KERN_ERR PFX "%s: BUG! Tx ring full when queue awake!\n",
dev->name);
@ -5556,9 +5559,9 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
bp->tx_prod = prod;
dev->trans_start = jiffies;
if (unlikely(bnx2_tx_avail(bp) <= MAX_SKB_FRAGS)) {
if (unlikely(bnx2_tx_avail(bp, bnapi) <= MAX_SKB_FRAGS)) {
netif_stop_queue(dev);
if (bnx2_tx_avail(bp) > bp->tx_wake_thresh)
if (bnx2_tx_avail(bp, bnapi) > bp->tx_wake_thresh)
netif_wake_queue(dev);
}

6
drivers/net/bnx2.h
View File

@ -6509,6 +6509,9 @@ struct bnx2_napi {
struct status_block *status_blk;
u32 last_status_idx;
u32 int_num;
u16 tx_cons;
u16 hw_tx_cons;
};
struct bnx2 {
@ -6539,9 +6542,6 @@ struct bnx2 {
u32 tx_bidx_addr;
u32 tx_bseq_addr;
u16 tx_cons __attribute__((aligned(L1_CACHE_BYTES)));
u16 hw_tx_cons;
struct bnx2_napi bnx2_napi;
#ifdef BCM_VLAN