[dpdk-dev] [PATCH v6] net/ixgbe: fix tx_q check failed on PF

[Yanglong Wu]

Tx_q check failed on PF that occurred when the SRIOV is active 
and tx_q > rx_q. The tx_q is equal to nb_q_per_pool. The number 
of nb_q_per_pool should equeal to max number of queues supported
by HW not nb_rx_q.

Fixes: 27b609cbd1c6 (ethdev: move the multi-queue mode check to
specific drivers)

Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
---
v5:
Rework according to comments
---
v6:
rework commit log
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index ff19a564a..baaeee5d9 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -95,6 +95,9 @@
 /* Timer value included in XOFF frames. */
 #define IXGBE_FC_PAUSE 0x680
 
+/*Default value of Max Rx Queue*/
+#define IXGBE_MAX_RX_QUEUE_NUM 128
+
 #define IXGBE_LINK_DOWN_CHECK_TIMEOUT 4000 /* ms */
 #define IXGBE_LINK_UP_CHECK_TIMEOUT   1000 /* ms */
 #define IXGBE_VMDQ_NUM_UC_MAC         4096 /* Maximum nb. of UC MAC addr. */
@@ -2194,9 +2197,10 @@ ixgbe_check_vf_rss_rxq_num(struct rte_eth_dev *dev, uint16_t nb_rx_q)
 		return -EINVAL;
 	}
 
-	RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = nb_rx_q;
-	RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx = pci_dev->max_vfs * nb_rx_q;
-
+	RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool =
+		IXGBE_MAX_RX_QUEUE_NUM / RTE_ETH_DEV_SRIOV(dev).active;
+	RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx =
+		pci_dev->max_vfs * RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool;
 	return 0;
 }
 
-- 
2.11.0