diff options
| -rw-r--r-- | drivers/net/ixgb/ixgb.h | 9 | ||||
| -rw-r--r-- | drivers/net/ixgb/ixgb_main.c | 34 |
2 files changed, 33 insertions, 10 deletions
diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h index 3d2e7217e9a..0078136643f 100644 --- a/drivers/net/ixgb/ixgb.h +++ b/drivers/net/ixgb/ixgb.h @@ -195,6 +195,15 @@ struct ixgb_adapter { struct ixgb_hw_stats stats; uint32_t alloc_rx_buff_failed; boolean_t have_msi; + unsigned long flags; +}; + +enum ixgb_state_t { + /* TBD + __IXGB_TESTING, + __IXGB_RESETTING, + */ + __IXGB_DOWN }; /* Exported from other modules */ diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index 269e6f805f4..548c248093b 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -283,13 +283,15 @@ ixgb_up(struct ixgb_adapter *adapter) } } - mod_timer(&adapter->watchdog_timer, jiffies); + clear_bit(__IXGB_DOWN, &adapter->flags); #ifdef CONFIG_IXGB_NAPI napi_enable(&adapter->napi); #endif ixgb_irq_enable(adapter); + mod_timer(&adapter->watchdog_timer, jiffies); + return 0; } @@ -298,11 +300,14 @@ ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog) { struct net_device *netdev = adapter->netdev; + /* prevent the interrupt handler from restarting watchdog */ + set_bit(__IXGB_DOWN, &adapter->flags); + #ifdef CONFIG_IXGB_NAPI napi_disable(&adapter->napi); atomic_set(&adapter->irq_sem, 0); #endif - + /* waiting for NAPI to complete can re-enable interrupts */ ixgb_irq_disable(adapter); free_irq(adapter->pdev->irq, netdev); @@ -592,6 +597,7 @@ ixgb_sw_init(struct ixgb_adapter *adapter) atomic_set(&adapter->irq_sem, 1); spin_lock_init(&adapter->tx_lock); + set_bit(__IXGB_DOWN, &adapter->flags); return 0; } @@ -1464,14 +1470,18 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) int vlan_id = 0; int tso; + if (test_bit(__IXGB_DOWN, &adapter->flags)) { + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } + if(skb->len <= 0) { dev_kfree_skb_any(skb); return 0; } #ifdef NETIF_F_LLTX - local_irq_save(flags); - if (!spin_trylock(&adapter->tx_lock)) { + if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) { /* Collision - tell upper layer to requeue */ local_irq_restore(flags); return NETDEV_TX_LOCKED; @@ -1753,9 +1763,9 @@ ixgb_intr(int irq, void *data) if(unlikely(!icr)) return IRQ_NONE; /* Not our interrupt */ - if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) { - mod_timer(&adapter->watchdog_timer, jiffies); - } + if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) + if (!test_bit(__IXGB_DOWN, &adapter->flags)) + mod_timer(&adapter->watchdog_timer, jiffies); #ifdef CONFIG_IXGB_NAPI if (netif_rx_schedule_prep(netdev, &adapter->napi)) { @@ -2195,7 +2205,9 @@ ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) IXGB_WRITE_REG(&adapter->hw, RCTL, rctl); } - ixgb_irq_enable(adapter); + /* don't enable interrupts unless we are UP */ + if (adapter->netdev->flags & IFF_UP) + ixgb_irq_enable(adapter); } static void @@ -2222,9 +2234,11 @@ ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) vlan_group_set_device(adapter->vlgrp, vid, NULL); - ixgb_irq_enable(adapter); + /* don't enable interrupts unless we are UP */ + if (adapter->netdev->flags & IFF_UP) + ixgb_irq_enable(adapter); - /* remove VID from filter table*/ + /* remove VID from filter table */ index = (vid >> 5) & 0x7F; vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index); |