From: Emil Tantilov Date: Tue, 23 Jul 2013 01:56:58 +0000 (+0000) Subject: ixgbe: fix ethtool loopback diagnostic with DCB enabled X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=91ffdc842b8ac0f96b5283b0f0b72927b7dfa8c7;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ixgbe: fix ethtool loopback diagnostic with DCB enabled This patch disables DCB prior to running the loopback test. When DCB is enabled the frames may be modified on Tx (by adding vlan tag) which will fail the check on Rx. Signed-off-by: Emil Tantilov Tested-by: Phil Schmitt Tested-by: Jack Morgan Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index 0e1b973659b0..08efc253fb8d 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -1805,6 +1805,10 @@ static int ixgbe_run_loopback_test(struct ixgbe_adapter *adapter) unsigned int size = 1024; netdev_tx_t tx_ret_val; struct sk_buff *skb; + u32 flags_orig = adapter->flags; + + /* DCB can modify the frames on Tx */ + adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; /* allocate test skb */ skb = alloc_skb(size, GFP_KERNEL); @@ -1857,6 +1861,7 @@ static int ixgbe_run_loopback_test(struct ixgbe_adapter *adapter) /* free the original skb */ kfree_skb(skb); + adapter->flags = flags_orig; return ret_val; }