diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c index 5442b359141..a689ee0d4be 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel 10 Gigabit PCI Express Linux driver - Copyright(c) 1999 - 2012 Intel Corporation. + Copyright(c) 1999 - 2013 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -232,18 +232,22 @@ u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *cfg, int direction, u8 up) { struct tc_configuration *tc_config = &cfg->tc_config[0]; u8 prio_mask = 1 << up; - u8 tc; + u8 tc = cfg->num_tcs.pg_tcs; + + /* If tc is 0 then DCB is likely not enabled or supported */ + if (!tc) + goto out; /* - * Test for TCs 7 through 1 and report the first match we find. If + * Test from maximum TC to 1 and report the first match we find. If * we find no match we can assume that the TC is 0 since the TC must * be set for all user priorities */ - for (tc = MAX_TRAFFIC_CLASS - 1; tc; tc--) { + for (tc--; tc; tc--) { if (prio_mask & tc_config[tc].path[direction].up_to_tc_bitmap) break; } - +out: return tc; } @@ -263,7 +267,7 @@ void ixgbe_dcb_unpack_map(struct ixgbe_dcb_config *cfg, int direction, u8 *map) * Configure dcb settings and enable dcb mode. */ s32 ixgbe_dcb_hw_config(struct ixgbe_hw *hw, - struct ixgbe_dcb_config *dcb_config) + struct ixgbe_dcb_config *dcb_config) { s32 ret = 0; u8 pfc_en; @@ -376,3 +380,25 @@ s32 ixgbe_dcb_hw_ets_config(struct ixgbe_hw *hw, } return 0; } + +static void ixgbe_dcb_read_rtrup2tc_82599(struct ixgbe_hw *hw, u8 *map) +{ + u32 reg, i; + + reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); + for (i = 0; i < MAX_USER_PRIORITY; i++) + map[i] = IXGBE_RTRUP2TC_UP_MASK & + (reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT)); +} + +void ixgbe_dcb_read_rtrup2tc(struct ixgbe_hw *hw, u8 *map) +{ + switch (hw->mac.type) { + case ixgbe_mac_82599EB: + case ixgbe_mac_X540: + ixgbe_dcb_read_rtrup2tc_82599(hw, map); + break; + default: + break; + } +} |