niu: Add TX multiqueue support.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
92831bc395
commit
b4c21639ab
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@ -3236,10 +3236,14 @@ static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
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static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
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static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
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{
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{
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struct netdev_queue *txq;
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u16 pkt_cnt, tmp;
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u16 pkt_cnt, tmp;
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int cons;
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int cons, index;
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u64 cs;
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u64 cs;
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index = (rp - np->tx_rings);
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txq = netdev_get_tx_queue(np->dev, index);
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cs = rp->tx_cs;
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cs = rp->tx_cs;
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if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
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if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
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goto out;
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goto out;
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@ -3262,13 +3266,13 @@ static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
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smp_mb();
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smp_mb();
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out:
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out:
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if (unlikely(netif_queue_stopped(np->dev) &&
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if (unlikely(netif_tx_queue_stopped(txq) &&
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(niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
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(niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
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netif_tx_lock(np->dev);
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__netif_tx_lock(txq, smp_processor_id());
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if (netif_queue_stopped(np->dev) &&
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if (netif_tx_queue_stopped(txq) &&
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(niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
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(niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
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netif_wake_queue(np->dev);
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netif_tx_wake_queue(txq);
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netif_tx_unlock(np->dev);
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__netif_tx_unlock(txq);
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}
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}
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}
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}
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@ -4061,6 +4065,8 @@ static int niu_alloc_channels(struct niu *np)
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np->num_rx_rings = parent->rxchan_per_port[port];
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np->num_rx_rings = parent->rxchan_per_port[port];
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np->num_tx_rings = parent->txchan_per_port[port];
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np->num_tx_rings = parent->txchan_per_port[port];
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np->dev->real_num_tx_queues = np->num_tx_rings;
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np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
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np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
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GFP_KERNEL);
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GFP_KERNEL);
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err = -ENOMEM;
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err = -ENOMEM;
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@ -5686,7 +5692,7 @@ static int niu_open(struct net_device *dev)
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goto out_free_irq;
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goto out_free_irq;
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}
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}
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netif_start_queue(dev);
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netif_tx_start_all_queues(dev);
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if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
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if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
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netif_carrier_on(dev);
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netif_carrier_on(dev);
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@ -5710,7 +5716,7 @@ static void niu_full_shutdown(struct niu *np, struct net_device *dev)
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cancel_work_sync(&np->reset_task);
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cancel_work_sync(&np->reset_task);
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niu_disable_napi(np);
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niu_disable_napi(np);
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netif_stop_queue(dev);
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netif_tx_stop_all_queues(dev);
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del_timer_sync(&np->timer);
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del_timer_sync(&np->timer);
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@ -5971,7 +5977,7 @@ static void niu_netif_start(struct niu *np)
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* so long as all callers are assured to have free tx slots
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* so long as all callers are assured to have free tx slots
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* (such as after niu_init_hw).
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* (such as after niu_init_hw).
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*/
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*/
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netif_wake_queue(np->dev);
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netif_tx_wake_all_queues(np->dev);
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niu_enable_napi(np);
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niu_enable_napi(np);
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@ -6097,15 +6103,11 @@ static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
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return ret;
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return ret;
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}
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}
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static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
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{
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return &np->tx_rings[0];
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}
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static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
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static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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{
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struct niu *np = netdev_priv(dev);
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struct niu *np = netdev_priv(dev);
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unsigned long align, headroom;
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unsigned long align, headroom;
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struct netdev_queue *txq;
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struct tx_ring_info *rp;
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struct tx_ring_info *rp;
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struct tx_pkt_hdr *tp;
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struct tx_pkt_hdr *tp;
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unsigned int len, nfg;
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unsigned int len, nfg;
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@ -6113,10 +6115,12 @@ static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
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int prod, i, tlen;
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int prod, i, tlen;
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u64 mapping, mrk;
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u64 mapping, mrk;
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rp = tx_ring_select(np, skb);
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i = skb_get_queue_mapping(skb);
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rp = &np->tx_rings[i];
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txq = netdev_get_tx_queue(dev, i);
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if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
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if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
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netif_stop_queue(dev);
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netif_tx_stop_queue(txq);
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dev_err(np->device, PFX "%s: BUG! Tx ring full when "
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dev_err(np->device, PFX "%s: BUG! Tx ring full when "
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"queue awake!\n", dev->name);
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"queue awake!\n", dev->name);
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rp->tx_errors++;
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rp->tx_errors++;
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@ -6215,9 +6219,9 @@ static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
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nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
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nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
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if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
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if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
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netif_stop_queue(dev);
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netif_tx_stop_queue(txq);
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if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
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if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
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netif_wake_queue(dev);
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netif_tx_wake_queue(txq);
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}
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}
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dev->trans_start = jiffies;
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dev->trans_start = jiffies;
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@ -6275,7 +6279,7 @@ static int niu_change_mtu(struct net_device *dev, int new_mtu)
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spin_unlock_irq(&np->lock);
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spin_unlock_irq(&np->lock);
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if (!err) {
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if (!err) {
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netif_start_queue(dev);
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netif_tx_start_all_queues(dev);
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if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
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if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
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netif_carrier_on(dev);
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netif_carrier_on(dev);
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@ -8532,9 +8536,10 @@ static struct net_device * __devinit niu_alloc_and_init(
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struct of_device *op, const struct niu_ops *ops,
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struct of_device *op, const struct niu_ops *ops,
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u8 port)
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u8 port)
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{
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{
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struct net_device *dev = alloc_etherdev(sizeof(struct niu));
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struct net_device *dev;
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struct niu *np;
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struct niu *np;
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dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
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if (!dev) {
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if (!dev) {
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dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
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dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
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return NULL;
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return NULL;
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