From: John Fastabend Date: Sat, 28 Jan 2012 01:22:35 +0000 (+0000) Subject: ixgbe: dcb: up2tc mapping lost on disable/enable CEE DCB state X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5facb8e0c4dc1c8c47b71fd7f376defe16185733;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git ixgbe: dcb: up2tc mapping lost on disable/enable CEE DCB state Users expect the up2tc mapping to be maintained across a DCB enable/disable/enable transition. And since we maintain all the other DCB attributes we should do this for up2tc mappings as well just to be consistent. Also without this we break user space applications that expect this to occur that previously worked. Signed-off-by: John Fastabend Tested-by: Stephen Ko Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c index 005e5f25600d..79a92fe987b9 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c @@ -112,6 +112,8 @@ static u8 ixgbe_dcbnl_get_state(struct net_device *netdev) static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state) { u8 err = 0; + u8 prio_tc[MAX_USER_PRIORITY] = {0}; + int i; struct ixgbe_adapter *adapter = netdev_priv(netdev); /* Fail command if not in CEE mode */ @@ -122,10 +124,15 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state) if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) return err; - if (state > 0) + if (state > 0) { err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs); - else + ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc); + } else { err = ixgbe_setup_tc(netdev, 0); + } + + for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) + netdev_set_prio_tc_map(netdev, i, prio_tc[i]); return err; }