From: Alexander Duyck Date: Sat, 12 Dec 2009 06:58:14 +0000 (-0800) Subject: igbvf: avoid reset storms due to mailbox issues X-Git-Tag: Ubuntu-snapdragon-4.4.0-1050.54~23760^2~1 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=7227909340477c1e5225bb2df76cdcc95b5e1da1;p=mirror_ubuntu-artful-kernel.git igbvf: avoid reset storms due to mailbox issues From: Alexander Duyck This change makes it so that reset/interrupt storms can be avoided when there are mailbox issues. The new behavior is to only allow the device to trigger mailbox related resets only once every 10 seconds. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- diff --git a/drivers/net/igbvf/igbvf.h b/drivers/net/igbvf/igbvf.h index 3d1ee7a8478e..a1774b29d222 100644 --- a/drivers/net/igbvf/igbvf.h +++ b/drivers/net/igbvf/igbvf.h @@ -276,6 +276,7 @@ struct igbvf_adapter { unsigned long led_status; unsigned int flags; + unsigned long last_reset; }; struct igbvf_info { diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c index a127620dc653..e9dd95f136aa 100644 --- a/drivers/net/igbvf/netdev.c +++ b/drivers/net/igbvf/netdev.c @@ -1469,6 +1469,8 @@ static void igbvf_reset(struct igbvf_adapter *adapter) memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); } + + adapter->last_reset = jiffies; } int igbvf_up(struct igbvf_adapter *adapter) @@ -1812,11 +1814,15 @@ static bool igbvf_has_link(struct igbvf_adapter *adapter) s32 ret_val = E1000_SUCCESS; bool link_active; + /* If interface is down, stay link down */ + if (test_bit(__IGBVF_DOWN, &adapter->state)) + return false; + ret_val = hw->mac.ops.check_for_link(hw); link_active = !hw->mac.get_link_status; /* if check for link returns error we will need to reset */ - if (ret_val) + if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) schedule_work(&adapter->reset_task); return link_active;