[BNX2]: Introduce new bnx2_napi structure.
Introduce a bnx2_napi structure that will hold a napi_struct and other fields to handle NAPI polling for the napi_struct. Various tx and rx indexes and status block pointers will be moved from the main bnx2 structure to this bnx2_napi structure. Most NAPI path functions are modified to be passed this bnx2_napi struct pointer. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
6d866ffc69
commit
35efa7c1f4
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@ -407,12 +407,14 @@ bnx2_disable_int(struct bnx2 *bp)
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static void
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bnx2_enable_int(struct bnx2 *bp)
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{
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID |
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BNX2_PCICFG_INT_ACK_CMD_MASK_INT | bp->last_status_idx);
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struct bnx2_napi *bnapi = &bp->bnx2_napi;
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | bp->last_status_idx);
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID |
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BNX2_PCICFG_INT_ACK_CMD_MASK_INT | bnapi->last_status_idx);
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | bnapi->last_status_idx);
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REG_WR(bp, BNX2_HC_COMMAND, bp->hc_cmd | BNX2_HC_COMMAND_COAL_NOW);
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}
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@ -425,12 +427,24 @@ bnx2_disable_int_sync(struct bnx2 *bp)
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synchronize_irq(bp->pdev->irq);
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}
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static void
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bnx2_napi_disable(struct bnx2 *bp)
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{
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napi_disable(&bp->bnx2_napi.napi);
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}
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static void
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bnx2_napi_enable(struct bnx2 *bp)
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{
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napi_enable(&bp->bnx2_napi.napi);
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}
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static void
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bnx2_netif_stop(struct bnx2 *bp)
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{
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bnx2_disable_int_sync(bp);
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if (netif_running(bp->dev)) {
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napi_disable(&bp->napi);
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bnx2_napi_disable(bp);
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netif_tx_disable(bp->dev);
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bp->dev->trans_start = jiffies; /* prevent tx timeout */
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}
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@ -442,7 +456,7 @@ bnx2_netif_start(struct bnx2 *bp)
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if (atomic_dec_and_test(&bp->intr_sem)) {
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if (netif_running(bp->dev)) {
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netif_wake_queue(bp->dev);
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napi_enable(&bp->napi);
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bnx2_napi_enable(bp);
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bnx2_enable_int(bp);
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}
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}
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@ -555,6 +569,8 @@ bnx2_alloc_mem(struct bnx2 *bp)
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memset(bp->status_blk, 0, bp->status_stats_size);
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bp->bnx2_napi.status_blk = bp->status_blk;
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bp->stats_blk = (void *) ((unsigned long) bp->status_blk +
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status_blk_size);
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@ -2291,9 +2307,9 @@ bnx2_alloc_rx_skb(struct bnx2 *bp, u16 index)
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}
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static int
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bnx2_phy_event_is_set(struct bnx2 *bp, u32 event)
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bnx2_phy_event_is_set(struct bnx2 *bp, struct bnx2_napi *bnapi, u32 event)
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{
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struct status_block *sblk = bp->status_blk;
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struct status_block *sblk = bnapi->status_blk;
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u32 new_link_state, old_link_state;
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int is_set = 1;
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@ -2311,24 +2327,24 @@ bnx2_phy_event_is_set(struct bnx2 *bp, u32 event)
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}
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static void
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bnx2_phy_int(struct bnx2 *bp)
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bnx2_phy_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
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{
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if (bnx2_phy_event_is_set(bp, STATUS_ATTN_BITS_LINK_STATE)) {
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if (bnx2_phy_event_is_set(bp, bnapi, STATUS_ATTN_BITS_LINK_STATE)) {
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spin_lock(&bp->phy_lock);
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bnx2_set_link(bp);
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spin_unlock(&bp->phy_lock);
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}
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if (bnx2_phy_event_is_set(bp, STATUS_ATTN_BITS_TIMER_ABORT))
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if (bnx2_phy_event_is_set(bp, bnapi, STATUS_ATTN_BITS_TIMER_ABORT))
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bnx2_set_remote_link(bp);
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}
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static inline u16
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bnx2_get_hw_tx_cons(struct bnx2 *bp)
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bnx2_get_hw_tx_cons(struct bnx2_napi *bnapi)
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{
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u16 cons;
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cons = bp->status_blk->status_tx_quick_consumer_index0;
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cons = bnapi->status_blk->status_tx_quick_consumer_index0;
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if (unlikely((cons & MAX_TX_DESC_CNT) == MAX_TX_DESC_CNT))
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cons++;
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@ -2336,12 +2352,12 @@ bnx2_get_hw_tx_cons(struct bnx2 *bp)
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}
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static void
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bnx2_tx_int(struct bnx2 *bp)
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bnx2_tx_int(struct bnx2 *bp, struct bnx2_napi *bnapi)
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{
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u16 hw_cons, sw_cons, sw_ring_cons;
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int tx_free_bd = 0;
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hw_cons = bnx2_get_hw_tx_cons(bp);
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hw_cons = bnx2_get_hw_tx_cons(bnapi);
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sw_cons = bp->tx_cons;
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while (sw_cons != hw_cons) {
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@ -2393,7 +2409,7 @@ bnx2_tx_int(struct bnx2 *bp)
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dev_kfree_skb(skb);
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hw_cons = bnx2_get_hw_tx_cons(bp);
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hw_cons = bnx2_get_hw_tx_cons(bnapi);
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}
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bp->hw_tx_cons = hw_cons;
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@ -2584,9 +2600,9 @@ bnx2_rx_skb(struct bnx2 *bp, struct sk_buff *skb, unsigned int len,
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}
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static inline u16
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bnx2_get_hw_rx_cons(struct bnx2 *bp)
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bnx2_get_hw_rx_cons(struct bnx2_napi *bnapi)
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{
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u16 cons = bp->status_blk->status_rx_quick_consumer_index0;
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u16 cons = bnapi->status_blk->status_rx_quick_consumer_index0;
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if (unlikely((cons & MAX_RX_DESC_CNT) == MAX_RX_DESC_CNT))
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cons++;
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@ -2594,13 +2610,13 @@ bnx2_get_hw_rx_cons(struct bnx2 *bp)
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}
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static int
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bnx2_rx_int(struct bnx2 *bp, int budget)
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bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
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{
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u16 hw_cons, sw_cons, sw_ring_cons, sw_prod, sw_ring_prod;
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struct l2_fhdr *rx_hdr;
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int rx_pkt = 0, pg_ring_used = 0;
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hw_cons = bnx2_get_hw_rx_cons(bp);
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hw_cons = bnx2_get_hw_rx_cons(bnapi);
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sw_cons = bp->rx_cons;
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sw_prod = bp->rx_prod;
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@ -2717,7 +2733,7 @@ next_rx:
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/* Refresh hw_cons to see if there is new work */
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if (sw_cons == hw_cons) {
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hw_cons = bnx2_get_hw_rx_cons(bp);
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hw_cons = bnx2_get_hw_rx_cons(bnapi);
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rmb();
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}
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}
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@ -2746,8 +2762,9 @@ bnx2_msi(int irq, void *dev_instance)
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{
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struct net_device *dev = dev_instance;
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struct bnx2 *bp = netdev_priv(dev);
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struct bnx2_napi *bnapi = &bp->bnx2_napi;
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prefetch(bp->status_blk);
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prefetch(bnapi->status_blk);
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_USE_INT_HC_PARAM |
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BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
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@ -2756,7 +2773,7 @@ bnx2_msi(int irq, void *dev_instance)
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if (unlikely(atomic_read(&bp->intr_sem) != 0))
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return IRQ_HANDLED;
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netif_rx_schedule(dev, &bp->napi);
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netif_rx_schedule(dev, &bnapi->napi);
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return IRQ_HANDLED;
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}
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@ -2766,14 +2783,15 @@ bnx2_msi_1shot(int irq, void *dev_instance)
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{
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struct net_device *dev = dev_instance;
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struct bnx2 *bp = netdev_priv(dev);
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struct bnx2_napi *bnapi = &bp->bnx2_napi;
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prefetch(bp->status_blk);
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prefetch(bnapi->status_blk);
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/* Return here if interrupt is disabled. */
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if (unlikely(atomic_read(&bp->intr_sem) != 0))
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return IRQ_HANDLED;
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netif_rx_schedule(dev, &bp->napi);
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netif_rx_schedule(dev, &bnapi->napi);
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return IRQ_HANDLED;
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}
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@ -2783,7 +2801,8 @@ bnx2_interrupt(int irq, void *dev_instance)
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{
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struct net_device *dev = dev_instance;
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struct bnx2 *bp = netdev_priv(dev);
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struct status_block *sblk = bp->status_blk;
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struct bnx2_napi *bnapi = &bp->bnx2_napi;
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struct status_block *sblk = bnapi->status_blk;
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/* When using INTx, it is possible for the interrupt to arrive
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* at the CPU before the status block posted prior to the
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@ -2791,7 +2810,7 @@ bnx2_interrupt(int irq, void *dev_instance)
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* When using MSI, the MSI message will always complete after
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* the status block write.
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*/
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if ((sblk->status_idx == bp->last_status_idx) &&
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if ((sblk->status_idx == bnapi->last_status_idx) &&
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(REG_RD(bp, BNX2_PCICFG_MISC_STATUS) &
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BNX2_PCICFG_MISC_STATUS_INTA_VALUE))
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return IRQ_NONE;
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@ -2809,9 +2828,9 @@ bnx2_interrupt(int irq, void *dev_instance)
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if (unlikely(atomic_read(&bp->intr_sem) != 0))
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return IRQ_HANDLED;
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if (netif_rx_schedule_prep(dev, &bp->napi)) {
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bp->last_status_idx = sblk->status_idx;
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__netif_rx_schedule(dev, &bp->napi);
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if (netif_rx_schedule_prep(dev, &bnapi->napi)) {
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bnapi->last_status_idx = sblk->status_idx;
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__netif_rx_schedule(dev, &bnapi->napi);
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}
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return IRQ_HANDLED;
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@ -2821,12 +2840,13 @@ bnx2_interrupt(int irq, void *dev_instance)
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STATUS_ATTN_BITS_TIMER_ABORT)
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static inline int
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bnx2_has_work(struct bnx2 *bp)
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bnx2_has_work(struct bnx2_napi *bnapi)
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{
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struct bnx2 *bp = bnapi->bp;
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struct status_block *sblk = bp->status_blk;
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if ((bnx2_get_hw_rx_cons(bp) != bp->rx_cons) ||
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(bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons))
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if ((bnx2_get_hw_rx_cons(bnapi) != bp->rx_cons) ||
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(bnx2_get_hw_tx_cons(bnapi) != bp->hw_tx_cons))
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return 1;
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if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) !=
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@ -2836,16 +2856,17 @@ bnx2_has_work(struct bnx2 *bp)
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return 0;
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}
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static int bnx2_poll_work(struct bnx2 *bp, int work_done, int budget)
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static int bnx2_poll_work(struct bnx2 *bp, struct bnx2_napi *bnapi,
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int work_done, int budget)
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{
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struct status_block *sblk = bp->status_blk;
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struct status_block *sblk = bnapi->status_blk;
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u32 status_attn_bits = sblk->status_attn_bits;
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u32 status_attn_bits_ack = sblk->status_attn_bits_ack;
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if ((status_attn_bits & STATUS_ATTN_EVENTS) !=
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(status_attn_bits_ack & STATUS_ATTN_EVENTS)) {
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bnx2_phy_int(bp);
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bnx2_phy_int(bp, bnapi);
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/* This is needed to take care of transient status
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* during link changes.
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@ -2855,49 +2876,50 @@ static int bnx2_poll_work(struct bnx2 *bp, int work_done, int budget)
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REG_RD(bp, BNX2_HC_COMMAND);
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}
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if (bnx2_get_hw_tx_cons(bp) != bp->hw_tx_cons)
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bnx2_tx_int(bp);
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if (bnx2_get_hw_tx_cons(bnapi) != bp->hw_tx_cons)
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bnx2_tx_int(bp, bnapi);
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if (bnx2_get_hw_rx_cons(bp) != bp->rx_cons)
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work_done += bnx2_rx_int(bp, budget - work_done);
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if (bnx2_get_hw_rx_cons(bnapi) != bp->rx_cons)
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work_done += bnx2_rx_int(bp, bnapi, budget - work_done);
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return work_done;
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}
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static int bnx2_poll(struct napi_struct *napi, int budget)
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{
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struct bnx2 *bp = container_of(napi, struct bnx2, napi);
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struct bnx2_napi *bnapi = container_of(napi, struct bnx2_napi, napi);
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struct bnx2 *bp = bnapi->bp;
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int work_done = 0;
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struct status_block *sblk = bp->status_blk;
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struct status_block *sblk = bnapi->status_blk;
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while (1) {
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work_done = bnx2_poll_work(bp, work_done, budget);
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work_done = bnx2_poll_work(bp, bnapi, work_done, budget);
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if (unlikely(work_done >= budget))
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break;
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/* bp->last_status_idx is used below to tell the hw how
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/* bnapi->last_status_idx is used below to tell the hw how
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* much work has been processed, so we must read it before
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* checking for more work.
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*/
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bp->last_status_idx = sblk->status_idx;
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bnapi->last_status_idx = sblk->status_idx;
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rmb();
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if (likely(!bnx2_has_work(bp))) {
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if (likely(!bnx2_has_work(bnapi))) {
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netif_rx_complete(bp->dev, napi);
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if (likely(bp->flags & USING_MSI_FLAG)) {
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID |
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bp->last_status_idx);
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bnapi->last_status_idx);
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break;
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}
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID |
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BNX2_PCICFG_INT_ACK_CMD_MASK_INT |
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bp->last_status_idx);
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bnapi->last_status_idx);
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REG_WR(bp, BNX2_PCICFG_INT_ACK_CMD,
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BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID |
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bp->last_status_idx);
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bnapi->last_status_idx);
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break;
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}
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}
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@ -4247,7 +4269,7 @@ bnx2_init_chip(struct bnx2 *bp)
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val |= BNX2_EMAC_RX_MTU_SIZE_JUMBO_ENA;
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REG_WR(bp, BNX2_EMAC_RX_MTU_SIZE, val);
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bp->last_status_idx = 0;
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bp->bnx2_napi.last_status_idx = 0;
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bp->rx_mode = BNX2_EMAC_RX_MODE_SORT_MODE;
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/* Set up how to generate a link change interrupt. */
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@ -4887,6 +4909,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
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struct sw_bd *rx_buf;
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struct l2_fhdr *rx_hdr;
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int ret = -ENODEV;
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struct bnx2_napi *bnapi = &bp->bnx2_napi;
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if (loopback_mode == BNX2_MAC_LOOPBACK) {
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bp->loopback = MAC_LOOPBACK;
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@ -4921,7 +4944,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
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REG_RD(bp, BNX2_HC_COMMAND);
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udelay(5);
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rx_start_idx = bnx2_get_hw_rx_cons(bp);
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rx_start_idx = bnx2_get_hw_rx_cons(bnapi);
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num_pkts = 0;
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@ -4951,10 +4974,10 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode)
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pci_unmap_single(bp->pdev, map, pkt_size, PCI_DMA_TODEVICE);
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dev_kfree_skb(skb);
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if (bnx2_get_hw_tx_cons(bp) != bp->tx_prod)
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if (bnx2_get_hw_tx_cons(bnapi) != bp->tx_prod)
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goto loopback_test_done;
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rx_idx = bnx2_get_hw_rx_cons(bp);
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rx_idx = bnx2_get_hw_rx_cons(bnapi);
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if (rx_idx != rx_start_idx + num_pkts) {
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goto loopback_test_done;
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}
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@ -5295,11 +5318,11 @@ bnx2_open(struct net_device *dev)
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return rc;
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bnx2_setup_int_mode(bp, disable_msi);
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napi_enable(&bp->napi);
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bnx2_napi_enable(bp);
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rc = bnx2_request_irq(bp);
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if (rc) {
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napi_disable(&bp->napi);
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bnx2_napi_disable(bp);
|
||||
bnx2_free_mem(bp);
|
||||
return rc;
|
||||
}
|
||||
|
@ -5307,7 +5330,7 @@ bnx2_open(struct net_device *dev)
|
|||
rc = bnx2_init_nic(bp);
|
||||
|
||||
if (rc) {
|
||||
napi_disable(&bp->napi);
|
||||
bnx2_napi_disable(bp);
|
||||
bnx2_free_irq(bp);
|
||||
bnx2_free_skbs(bp);
|
||||
bnx2_free_mem(bp);
|
||||
|
@ -5342,7 +5365,7 @@ bnx2_open(struct net_device *dev)
|
|||
rc = bnx2_request_irq(bp);
|
||||
|
||||
if (rc) {
|
||||
napi_disable(&bp->napi);
|
||||
bnx2_napi_disable(bp);
|
||||
bnx2_free_skbs(bp);
|
||||
bnx2_free_mem(bp);
|
||||
del_timer_sync(&bp->timer);
|
||||
|
@ -5557,7 +5580,7 @@ bnx2_close(struct net_device *dev)
|
|||
msleep(1);
|
||||
|
||||
bnx2_disable_int_sync(bp);
|
||||
napi_disable(&bp->napi);
|
||||
bnx2_napi_disable(bp);
|
||||
del_timer_sync(&bp->timer);
|
||||
if (bp->flags & NO_WOL_FLAG)
|
||||
reset_code = BNX2_DRV_MSG_CODE_UNLOAD_LNK_DN;
|
||||
|
@ -7082,6 +7105,15 @@ bnx2_bus_string(struct bnx2 *bp, char *str)
|
|||
return str;
|
||||
}
|
||||
|
||||
static int __devinit
|
||||
bnx2_init_napi(struct bnx2 *bp)
|
||||
{
|
||||
struct bnx2_napi *bnapi = &bp->bnx2_napi;
|
||||
|
||||
bnapi->bp = bp;
|
||||
netif_napi_add(bp->dev, &bnapi->napi, bnx2_poll, 64);
|
||||
}
|
||||
|
||||
static int __devinit
|
||||
bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
|
||||
{
|
||||
|
@ -7123,7 +7155,7 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|||
dev->ethtool_ops = &bnx2_ethtool_ops;
|
||||
|
||||
bp = netdev_priv(dev);
|
||||
netif_napi_add(dev, &bp->napi, bnx2_poll, 64);
|
||||
bnx2_init_napi(bp);
|
||||
|
||||
#if defined(HAVE_POLL_CONTROLLER) || defined(CONFIG_NET_POLL_CONTROLLER)
|
||||
dev->poll_controller = poll_bnx2;
|
||||
|
|
|
@ -6503,6 +6503,14 @@ struct bnx2_irq {
|
|||
char name[16];
|
||||
};
|
||||
|
||||
struct bnx2_napi {
|
||||
struct napi_struct napi ____cacheline_aligned;
|
||||
struct bnx2 *bp;
|
||||
struct status_block *status_blk;
|
||||
u32 last_status_idx;
|
||||
u32 int_num;
|
||||
};
|
||||
|
||||
struct bnx2 {
|
||||
/* Fields used in the tx and intr/napi performance paths are grouped */
|
||||
/* together in the beginning of the structure. */
|
||||
|
@ -6511,13 +6519,8 @@ struct bnx2 {
|
|||
struct net_device *dev;
|
||||
struct pci_dev *pdev;
|
||||
|
||||
struct napi_struct napi;
|
||||
|
||||
atomic_t intr_sem;
|
||||
|
||||
struct status_block *status_blk;
|
||||
u32 last_status_idx;
|
||||
|
||||
u32 flags;
|
||||
#define PCIX_FLAG 0x00000001
|
||||
#define PCI_32BIT_FLAG 0x00000002
|
||||
|
@ -6539,6 +6542,8 @@ struct bnx2 {
|
|||
u16 tx_cons __attribute__((aligned(L1_CACHE_BYTES)));
|
||||
u16 hw_tx_cons;
|
||||
|
||||
struct bnx2_napi bnx2_napi;
|
||||
|
||||
#ifdef BCM_VLAN
|
||||
struct vlan_group *vlgrp;
|
||||
#endif
|
||||
|
@ -6672,6 +6677,7 @@ struct bnx2 {
|
|||
|
||||
u32 stats_ticks;
|
||||
|
||||
struct status_block *status_blk;
|
||||
dma_addr_t status_blk_mapping;
|
||||
|
||||
struct statistics_block *stats_blk;
|
||||
|
|
Loading…
Reference in a new issue