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authorGangfeng Huang <gangfeng.huang@ni.com>2017-05-27 09:17:53 +0800
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2017-08-08 17:28:29 -0700
commit94221ae75c869b28bceb76ae300b55d35c186406 (patch)
treebde3745d40a1b167f3d694ad3a36d7d88dc4958b /drivers/net/ethernet/intel/igb
parentnet: vrf: Add extack messages for newlink failures (diff)
downloadlinux-dev-94221ae75c869b28bceb76ae300b55d35c186406.tar.xz
linux-dev-94221ae75c869b28bceb76ae300b55d35c186406.zip
igb: Fix error of RX network flow classification
After add an ethertype filter, if user change the adapter speed several times, the error "ethtool -N: etype filters are all used" is reported by igb driver. In older patch, function igb_nfc_filter_exit() and igb_nfc_filter_restore() is not paried. igb_nfc_filter_restore() exist in igb_up(), but function igb_nfc_filter_exit() is exist in __igb_close(). In the process of speed changing, only igb_nfc_filter_restore() is called, it will take a position of ethertype bitmap. Reproduce steps: Step 1: Add a etype filter by ethtool $ethtool -N eth0 flow-type ether proto 0x88F8 action 1 Step 2: Change the adapter speed to 100M/full duplex $ethtool -s eth0 speed 100 duplex full Step 3: Change the adapter speed to 1000M/full duplex ethtool -s eth0 speed 1000 duplex full Repeat step2 and step3, then dmesg the system log, you can find the error message, add new ethtype filter is also failed. This fixing is move igb_nfc_filter_exit() from __igb_close() to igb_down() to make igb_nfc_filter_restore()/igb_nfc_filter_exit() is paired. Signed-off-by: Gangfeng Huang <gangfeng.huang@ni.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb')
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index ec62410b035a..6a63ea564a57 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1791,6 +1791,8 @@ void igb_down(struct igb_adapter *adapter)
wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
/* flush and sleep below */
+ igb_nfc_filter_exit(adapter);
+
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
@@ -3317,8 +3319,6 @@ static int __igb_close(struct net_device *netdev, bool suspending)
igb_down(adapter);
igb_free_irq(adapter);
- igb_nfc_filter_exit(adapter);
-
igb_free_all_tx_resources(adapter);
igb_free_all_rx_resources(adapter);