From: John Fastabend Date: Wed, 19 Oct 2011 08:48:49 +0000 (+0000) Subject: ixgbe: DCB, return max for IEEE traffic classes X-Git-Tag: v2.6.39-400.9.0~423^2~19^2~11^2~140 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e2e613d3f2e9a97c3e8c6d65610db67350666dde;p=users%2Fjedix%2Flinux-maple.git ixgbe: DCB, return max for IEEE traffic classes Returning the max traffic classes on get requests simplifies user space configurations because applications will know explicitly how many traffic classes can be used. Typical switch implementations use 2 or 3 traffic classes so this not seen often today. And user space can learn the number of traffic classes by return codes but this allows user space to configure ixgbe correctly at the start. (cherry picked from commit 8599e251b3dd18c7bcb342d5b4acecc420f43606) Signed-off-by: John Fastabend Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher Signed-off-by: Joe Jin --- diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c index 62cc6a2e10dc8..27634c7dcdc2e 100644 --- a/drivers/net/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c @@ -561,11 +561,12 @@ static int ixgbe_dcbnl_ieee_getets(struct net_device *dev, struct ixgbe_adapter *adapter = netdev_priv(dev); struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets; + ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs; + /* No IEEE PFC settings available */ if (!my_ets) - return -EINVAL; + return 0; - ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs; ets->cbs = my_ets->cbs; memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw)); memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw)); @@ -621,11 +622,12 @@ static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc; int i; + pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs; + /* No IEEE PFC settings available */ if (!my_pfc) - return -EINVAL; + return 0; - pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs; pfc->pfc_en = my_pfc->pfc_en; pfc->mbc = my_pfc->mbc; pfc->delay = my_pfc->delay;