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authorMichael Chan <mchan@broadcom.com>2007-12-20 19:56:59 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:57:36 -0800
commita550c99bc39caf292ed214c0c9c2c4d0b9c95161 (patch)
tree061b23ae2c3478f8863a1978117ac394b9b7a6b0 /drivers
parent35efa7c1f4aa868d4a948a9069f20ccef1b3b28d (diff)
downloadop-kernel-dev-a550c99bc39caf292ed214c0c9c2c4d0b9c95161.zip
op-kernel-dev-a550c99bc39caf292ed214c0c9c2c4d0b9c95161.tar.gz
[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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/bnx2.c31
-rw-r--r--drivers/net/bnx2.h6
2 files changed, 20 insertions, 17 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 3f754e6..0300a75 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -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);
}
diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index 345b6db..958fdda 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -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
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