From 4ec2411980d0fd2995e8dea8a06fe57aa47523cb Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 7 Jan 2008 20:48:21 -0800 Subject: [NET]: Do not check netif_running() and carrier state in ->poll() Drivers do this to try to break out of the ->poll()'ing loop when the device is being brought administratively down. Now that we have a napi_disable() "pending" state we are going to solve that problem generically. Signed-off-by: David S. Miller --- drivers/net/e100.c | 2 +- drivers/net/e1000/e1000_main.c | 8 +------- drivers/net/e1000e/netdev.c | 8 +------- drivers/net/epic100.c | 2 +- drivers/net/fec_8xx/fec_main.c | 5 ----- drivers/net/fs_enet/fs_enet-main.c | 3 --- drivers/net/ixgb/ixgb_main.c | 2 +- drivers/net/ixgbe/ixgbe_main.c | 8 +------- drivers/net/ixp2000/ixpdev.c | 2 -- drivers/net/myri10ge/myri10ge.c | 2 +- drivers/net/natsemi.c | 2 +- drivers/net/qla3xxx.c | 7 +------ drivers/net/s2io.c | 3 --- drivers/net/tulip/interrupt.c | 5 ----- drivers/net/xen-netfront.c | 5 ----- 15 files changed, 9 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/net/e100.c b/drivers/net/e100.c index 2b06e4b4dab..68316f15a7c 100644 --- a/drivers/net/e100.c +++ b/drivers/net/e100.c @@ -1997,7 +1997,7 @@ static int e100_poll(struct napi_struct *napi, int budget) tx_cleaned = e100_tx_clean(nic); /* If no Rx and Tx cleanup work was done, exit polling mode. */ - if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { + if((!tx_cleaned && (work_done == 0))) { netif_rx_complete(netdev, napi); e100_enable_irq(nic); } diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 4f37506ad37..9de71443ef8 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -3924,10 +3924,6 @@ e1000_clean(struct napi_struct *napi, int budget) /* Must NOT use netdev_priv macro here. */ adapter = poll_dev->priv; - /* Keep link state information with original netdev */ - if (!netif_carrier_ok(poll_dev)) - goto quit_polling; - /* e1000_clean is called per-cpu. This lock protects * tx_ring[0] from being cleaned by multiple cpus * simultaneously. A failure obtaining the lock means @@ -3942,9 +3938,7 @@ e1000_clean(struct napi_struct *napi, int budget) &work_done, budget); /* If no Tx and not enough Rx work done, exit the polling mode */ - if ((!tx_cleaned && (work_done == 0)) || - !netif_running(poll_dev)) { -quit_polling: + if ((!tx_cleaned && (work_done == 0))) { if (likely(adapter->itr_setting & 3)) e1000_set_itr(adapter); netif_rx_complete(poll_dev, napi); diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 4fd2e23720b..dd9698cfbb9 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -1389,10 +1389,6 @@ static int e1000_clean(struct napi_struct *napi, int budget) /* Must NOT use netdev_priv macro here. */ adapter = poll_dev->priv; - /* Keep link state information with original netdev */ - if (!netif_carrier_ok(poll_dev)) - goto quit_polling; - /* e1000_clean is called per-cpu. This lock protects * tx_ring from being cleaned by multiple cpus * simultaneously. A failure obtaining the lock means @@ -1405,9 +1401,7 @@ static int e1000_clean(struct napi_struct *napi, int budget) adapter->clean_rx(adapter, &work_done, budget); /* If no Tx and not enough Rx work done, exit the polling mode */ - if ((!tx_cleaned && (work_done < budget)) || - !netif_running(poll_dev)) { -quit_polling: + if ((!tx_cleaned && (work_done < budget))) { if (adapter->itr_setting & 3) e1000_set_itr(adapter); netif_rx_complete(poll_dev, napi); diff --git a/drivers/net/epic100.c b/drivers/net/epic100.c index ecdd3fc8d70..0b365b8d947 100644 --- a/drivers/net/epic100.c +++ b/drivers/net/epic100.c @@ -1273,7 +1273,7 @@ rx_action: epic_rx_err(dev, ep); - if (netif_running(dev) && (work_done < budget)) { + if (work_done < budget) { unsigned long flags; int more; diff --git a/drivers/net/fec_8xx/fec_main.c b/drivers/net/fec_8xx/fec_main.c index 8d2904fa578..ab9637ab3a8 100644 --- a/drivers/net/fec_8xx/fec_main.c +++ b/drivers/net/fec_8xx/fec_main.c @@ -476,11 +476,6 @@ static int fec_enet_rx_common(struct fec_enet_private *ep, __u16 pkt_len, sc; int curidx; - if (fpi->use_napi) { - if (!netif_running(dev)) - return 0; - } - /* * First, grab all of the stats for the incoming packet. * These get messed up if we get called due to a busy condition. diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c index f2a4d399a6e..3e1a57a42f1 100644 --- a/drivers/net/fs_enet/fs_enet-main.c +++ b/drivers/net/fs_enet/fs_enet-main.c @@ -96,9 +96,6 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget) u16 pkt_len, sc; int curidx; - if (!netif_running(dev)) - return 0; - /* * First, grab all of the stats for the incoming packet. * These get messed up if we get called due to a busy condition. diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index bf9085fe035..a8bef52870f 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -1794,7 +1794,7 @@ ixgb_clean(struct napi_struct *napi, int budget) ixgb_clean_rx_irq(adapter, &work_done, budget); /* if no Tx and not enough Rx work done, exit the polling mode */ - if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { + if((!tx_cleaned && (work_done == 0))) { netif_rx_complete(netdev, napi); ixgb_irq_enable(adapter); } diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 00bc525c656..7c319303f0f 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -1470,19 +1470,13 @@ static int ixgbe_clean(struct napi_struct *napi, int budget) struct net_device *netdev = adapter->netdev; int tx_cleaned = 0, work_done = 0; - /* Keep link state information with original netdev */ - if (!netif_carrier_ok(adapter->netdev)) - goto quit_polling; - /* In non-MSIX case, there is no multi-Tx/Rx queue */ tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring); ixgbe_clean_rx_irq(adapter, &adapter->rx_ring[0], &work_done, budget); /* If no Tx and not enough Rx work done, exit the polling mode */ - if ((!tx_cleaned && (work_done < budget)) || - !netif_running(adapter->netdev)) { -quit_polling: + if ((!tx_cleaned && (work_done < budget))) { netif_rx_complete(netdev, napi); ixgbe_irq_enable(adapter); } diff --git a/drivers/net/ixp2000/ixpdev.c b/drivers/net/ixp2000/ixpdev.c index 6c0dd49149d..484cb2ba717 100644 --- a/drivers/net/ixp2000/ixpdev.c +++ b/drivers/net/ixp2000/ixpdev.c @@ -135,8 +135,6 @@ static int ixpdev_poll(struct napi_struct *napi, int budget) struct net_device *dev = ip->dev; int rx; - /* @@@ Have to stop polling when nds[0] is administratively - * downed while we are polling. */ rx = 0; do { ixp2000_reg_write(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0x00ff); diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 8def8657251..c90958f6d3f 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -1239,7 +1239,7 @@ static int myri10ge_poll(struct napi_struct *napi, int budget) /* process as many rx events as NAPI will allow */ work_done = myri10ge_clean_rx_done(mgp, budget); - if (work_done < budget || !netif_running(netdev)) { + if (work_done < budget) { netif_rx_complete(netdev, napi); put_be32(htonl(3), mgp->irq_claim); } diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c index 87cde062fd6..c329a4f5840 100644 --- a/drivers/net/natsemi.c +++ b/drivers/net/natsemi.c @@ -2266,7 +2266,7 @@ static int natsemi_poll(struct napi_struct *napi, int budget) /* Reenable interrupts providing nothing is trying to shut * the chip down. */ spin_lock(&np->lock); - if (!np->hands_off && netif_running(dev)) + if (!np->hands_off) natsemi_irq_enable(dev); spin_unlock(&np->lock); diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c index a5791114b7b..cf0774de6c4 100644 --- a/drivers/net/qla3xxx.c +++ b/drivers/net/qla3xxx.c @@ -2320,14 +2320,9 @@ static int ql_poll(struct napi_struct *napi, int budget) unsigned long hw_flags; struct ql3xxx_port_registers __iomem *port_regs = qdev->mem_map_registers; - if (!netif_carrier_ok(ndev)) - goto quit_polling; - ql_tx_rx_clean(qdev, &tx_cleaned, &rx_cleaned, budget); - if (tx_cleaned + rx_cleaned != budget || - !netif_running(ndev)) { -quit_polling: + if (tx_cleaned + rx_cleaned != budget) { spin_lock_irqsave(&qdev->hw_lock, hw_flags); __netif_rx_complete(ndev, napi); ql_update_small_bufq_prod_index(qdev); diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 9d80f1cf73a..fa57c49c0c5 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -2704,9 +2704,6 @@ static int s2io_poll(struct napi_struct *napi, int budget) struct XENA_dev_config __iomem *bar0 = nic->bar0; int i; - if (!is_s2io_card_up(nic)) - return 0; - mac_control = &nic->mac_control; config = &nic->config; diff --git a/drivers/net/tulip/interrupt.c b/drivers/net/tulip/interrupt.c index 0461956d3b5..6284afd14bb 100644 --- a/drivers/net/tulip/interrupt.c +++ b/drivers/net/tulip/interrupt.c @@ -117,9 +117,6 @@ int tulip_poll(struct napi_struct *napi, int budget) int received = 0; #endif - if (!netif_running(dev)) - goto done; - #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION /* that one buffer is needed for mit activation; or might be a @@ -261,8 +258,6 @@ int tulip_poll(struct napi_struct *napi, int budget) * finally: amount of IO did not increase at all. */ } while ((ioread32(tp->base_addr + CSR5) & RxIntr)); -done: - #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION /* We use this simplistic scheme for IM. It's proven by diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 2a8fc431099..bca37bf0f54 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -852,11 +852,6 @@ static int xennet_poll(struct napi_struct *napi, int budget) spin_lock(&np->rx_lock); - if (unlikely(!netif_carrier_ok(dev))) { - spin_unlock(&np->rx_lock); - return 0; - } - skb_queue_head_init(&rxq); skb_queue_head_init(&errq); skb_queue_head_init(&tmpq); -- cgit v1.2.3-70-g09d2