[dpdk-dev] [PATCH] net/ixgbe: add VLAN info in queue info msg to VF

[Wei Dai <wei.dai@intel.com>]

This patch align with PF kerenl driver version 5.1.3 to add the
number of queues to transmit VLAN packets in msg of queue info
to VF.  If DCB is enabled, it is the number of DCB traffic
classes. If DCB is not enabled and default VLAN is enabled,
it is 1, For other cases, it is 0.

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 drivers/net/ixgbe/ixgbe_pf.c | 61 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 57 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index c0d86c7..676e92c 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -627,6 +627,18 @@ ixgbe_get_vf_queues(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 	struct ixgbe_vf_info *vfinfo =
 		*IXGBE_DEV_PRIVATE_TO_P_VFDATA(dev->data->dev_private);
 	uint32_t default_q = vf * RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool;
+	struct rte_eth_conf *eth_conf;
+	struct rte_eth_vmdq_dcb_tx_conf *vmdq_dcb_tx_conf;
+	u8 num_tcs;
+	struct ixgbe_hw *hw;
+	u32 vmvir;
+#define IXGBE_VMVIR_VLANA_MASK		0xC0000000
+#define IXGBE_VMVIR_VLAN_VID_MASK	0x00000FFF
+#define IXGBE_VMVIR_VLAN_UP_MASK	0x0000E000
+#define VLAN_PRIO_SHIFT			13
+	u32 vlana;
+	u32 vid;
+	u32 user_priority;
 
 	/* Verify if the PF supports the mbox APIs version or not */
 	switch (vfinfo[vf].api_version) {
@@ -645,10 +657,51 @@ ixgbe_get_vf_queues(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 	/* Notify VF of default queue */
 	msgbuf[IXGBE_VF_DEF_QUEUE] = default_q;
 
-	/*
-	 * FIX ME if it needs fill msgbuf[IXGBE_VF_TRANS_VLAN]
-	 * for VLAN strip or VMDQ_DCB or VMDQ_DCB_RSS
-	 */
+	/* Notify VF of number of DCB traffic classes */
+	eth_conf = &dev->data->dev_conf;
+	switch (eth_conf->txmode.mq_mode) {
+	case ETH_MQ_TX_NONE:
+	case ETH_MQ_TX_DCB:
+		RTE_LOG(ERR, PMD, "PF must work with virtualization for VF %u"
+			", but its tx mode = %d\n", vf,
+			eth_conf->txmode.mq_mode);
+		return -1;
+
+	case ETH_MQ_TX_VMDQ_DCB:
+		vmdq_dcb_tx_conf = &eth_conf->tx_adv_conf.vmdq_dcb_tx_conf;
+		switch (vmdq_dcb_tx_conf->nb_queue_pools) {
+		case ETH_16_POOLS:
+			num_tcs = ETH_8_TCS;
+			break;
+		case ETH_32_POOLS:
+			num_tcs = ETH_4_TCS;
+			break;
+		default:
+			return -1;
+		}
+		break;
+
+	/* ETH_MQ_TX_VMDQ_ONLY,  DCB not enabled */
+	case ETH_MQ_TX_VMDQ_ONLY:
+		hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+		vmvir = IXGBE_READ_REG(hw, IXGBE_VMVIR(vf));
+		vlana = vmvir & IXGBE_VMVIR_VLANA_MASK;
+		vid = vmvir & IXGBE_VMVIR_VLAN_VID_MASK;
+		user_priority =
+			(vmvir & IXGBE_VMVIR_VLAN_UP_MASK) >> VLAN_PRIO_SHIFT;
+		if ((vlana == IXGBE_VMVIR_VLANA_DEFAULT) &&
+			((vid !=  0) || (user_priority != 0)))
+			num_tcs = 1;
+		else
+			num_tcs = 0;
+		break;
+
+	default:
+		RTE_LOG(ERR, PMD, "PF work with invalid mode = %d\n",
+			eth_conf->txmode.mq_mode);
+		return -1;
+	}
+	msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
 
 	return 0;
 }
-- 
2.7.5