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authorJohn Fastabend <john.r.fastabend@intel.com>2011-10-19 08:48:49 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-11-02 16:55:55 -0700
commit8599e251b3dd18c7bcb342d5b4acecc420f43606 (patch)
tree54632af24a86dc2506661fa33ddc6a31ceff8b6d
parent331bcf45feb76d507a769d9d3b26ff5626804117 (diff)
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. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
index 3631d639d86a..33b93ffb87cb 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ethernet/intel/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;