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net/ixgbe: fix TC bandwidth setting

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4 and 8 TCs are supported on ixgbe. By default there're
8 TCs. So when initializing the device, the bandwidth for
8 TCs is set.
When changing the TC number, it's only considered setting
the bandwidth for 4 TCs. If the user change the number
from 4 to 8, the TCs' bandwidth is not right.

Fixes: 0807f80d35d0 ("ixgbe: DCB / flow control")
Cc: stable@dpdk.org

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
This commit is contained in:
Wenzhuo Lu 2017-03-24 10:51:03 +08:00 committed by Ferruh Yigit
parent c0bddd3a05
commit 1c4da4ef96
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ixgbe/ixgbe_rxtx.c
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@ -3814,6 +3814,15 @@ ixgbe_dcb_hw_configure(struct rte_eth_dev *dev,
tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0;
tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0;
}
} else {
/* Re-configure 8 TCs BW */
for (i = 0; i < nb_tcs; i++) {
tc = &dcb_config->tc_config[i];
tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
(uint8_t)(100 / nb_tcs + (i & 1));
tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
(uint8_t)(100 / nb_tcs + (i & 1));
}
}
switch (hw->mac.type) {