[BNX2]: Add function to fetch hardware tx index.

This makes the code cleaner and easier to support different tx rings.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 469d259..f19a1e9 100644 (file)
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -2323,17 +2323,25 @@ bnx2_phy_int(struct bnx2 *bp)
 
 }
 
+static inline u16
+bnx2_get_hw_tx_cons(struct bnx2 *bp)
+{
+       u16 cons;
+
+       cons = bp->status_blk->status_tx_quick_consumer_index0;
+
+       if (unlikely((cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT))
+               cons++;
+       return cons;
+}
+
 static void
 bnx2_tx_int(struct bnx2 *bp)
 {
-       struct status_block *sblk = bp->status_blk;
        u16 hw_cons, sw_cons, sw_ring_cons;
        int tx_free_bd = 0;
 
-       hw_cons = bp->hw_tx_cons = sblk->status_tx_quick_consumer_index0;
-       if ((hw_cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT) {
-               hw_cons++;
-       }
+       hw_cons = bnx2_get_hw_tx_cons(bp);
        sw_cons = bp->tx_cons;
 
        while (sw_cons != hw_cons) {
@@ -2385,14 +2393,10 @@ bnx2_tx_int(struct bnx2 *bp)
 
                dev_kfree_skb(skb);
 
-               hw_cons = bp->hw_tx_cons =
-                       sblk->status_tx_quick_consumer_index0;
-
-               if ((hw_cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT) {
-                       hw_cons++;
-               }
+               hw_cons = bnx2_get_hw_tx_cons(bp);
        }
 
+       bp->hw_tx_cons = hw_cons;
        bp->tx_cons = sw_cons;
        /* Need to make the tx_cons update visible to bnx2_start_xmit()
         * before checking for netif_queue_stopped().  Without the
@@ -2822,7 +2826,7 @@ bnx2_has_work(struct bnx2 *bp)
        struct status_block *sblk = bp->status_blk;
 
        if ((bnx2_get_hw_rx_cons(bp) != bp->rx_cons) ||
-           (sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons))
+           (bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons))
                return 1;
 
        if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) !=
@@ -2851,7 +2855,7 @@ static int bnx2_poll_work(struct bnx2 *bp, int work_done, int budget)
                REG_RD(bp, BNX2_HC_COMMAND);
        }
 
-       if (sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons)
+       if (bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons)
                bnx2_tx_int(bp);
 
        if (bnx2_get_hw_rx_cons(bp) != bp->rx_cons)
@@ -4917,7 +4921,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
        REG_RD(bp, BNX2_HC_COMMAND);
 
        udelay(5);
-       rx_start_idx = bp->status_blk->status_rx_quick_consumer_index0;
+       rx_start_idx = bnx2_get_hw_rx_cons(bp);
 
        num_pkts = 0;
 
@@ -4947,11 +4951,10 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
        pci_unmap_single(bp->pdev, map, pkt_size, PCI_DMA_TODEVICE);
        dev_kfree_skb(skb);
 
-       if (bp->status_blk->status_tx_quick_consumer_index0 != bp->tx_prod) {
+       if (bnx2_get_hw_tx_cons(bp) != bp->tx_prod)
                goto loopback_test_done;
-       }
 
-       rx_idx = bp->status_blk->status_rx_quick_consumer_index0;
+       rx_idx = bnx2_get_hw_rx_cons(bp);
        if (rx_idx != rx_start_idx + num_pkts) {
                goto loopback_test_done;
        }