[dpdk-dev] [PATCH] net/ixgbe: fix TC bandwidth setting
Wenzhuo Lu
wenzhuo.lu at intel.com
Fri Mar 24 03:51:03 CET 2017
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 at dpdk.org
Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
drivers/net/ixgbe/ixgbe_rxtx.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 9502432..9294a0d 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -3758,6 +3758,15 @@ void __attribute__((cold))
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) {
--
1.9.3
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