diff options
| author | John Fastabend <john.r.fastabend@intel.com> | 2011-09-27 03:52:01 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-10-06 03:23:36 -0700 |
| commit | 4de2a0224ae3c437e8a090b6ec8d304a7edff049 (patch) | |
| tree | 0eff20682be02e17dfe11001083f96ed799e1393 | |
| parent | 32701dc2e616ca64e3d24b41c78671c4528671c1 (diff) | |
ixgbe: DCB X540 devices support max traffic class of 4
X540 devices can only support up to 4 traffic classes and
guarantee a "lossless" traffic class on some platforms.
This patch sets the X540 devices to initialize a max
traffic class value of 4 at probe time.
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_main.c | 21 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_type.h | 1 |
2 files changed, 19 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 2b8ff9557c4c..1f936c88ec67 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4990,17 +4990,32 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) spin_lock_init(&adapter->fdir_perfect_lock); #ifdef CONFIG_IXGBE_DCB + switch (hw->mac.type) { + case ixgbe_mac_X540: + adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; + adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; + break; + default: + adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; + adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; + break; + } + /* Configure DCB traffic classes */ for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { tc = &adapter->dcb_cfg.tc_config[j]; tc->path[DCB_TX_CONFIG].bwg_id = 0; tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); - tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 1 << j; tc->path[DCB_RX_CONFIG].bwg_id = 0; tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); - tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 1 << j; tc->dcb_pfc = pfc_disabled; } + + /* Initialize default user to priority mapping, UPx->TC0 */ + tc = &adapter->dcb_cfg.tc_config[0]; + tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; + tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; + adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; adapter->dcb_cfg.pfc_mode_enable = false; @@ -7019,7 +7034,7 @@ int ixgbe_setup_tc(struct net_device *dev, u8 tc) } /* Hardware supports up to 8 traffic classes */ - if (tc > MAX_TRAFFIC_CLASS || + if (tc > adapter->dcb_cfg.num_tcs.pg_tcs || (hw->mac.type == ixgbe_mac_82598EB && tc < MAX_TRAFFIC_CLASS)) return -EINVAL; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h index baad0cb371f3..4ea909c7951b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h @@ -406,6 +406,7 @@ /* DCB registers */ #define MAX_TRAFFIC_CLASS 8 +#define X540_TRAFFIC_CLASS 4 #define IXGBE_RMCS 0x03D00 #define IXGBE_DPMCS 0x07F40 #define IXGBE_PDPMCS 0x0CD00 |