[dpdk-dev] [PATCH v4 5/7] pmd ixgbe: enable DCB in SRIOV

[Pawel Wodkowski <pawelx.wodkowski@intel.com>]

Enable DCB in SRIOV mode for ixgbe driver.

To use DCB in VF PF must configure port as  DCB + VMDQ and VF must
configure port as DCB only. VF are not allowed to change DCB settings
that are common to all ports like number of TC.

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
---
 lib/librte_pmd_ixgbe/ixgbe_ethdev.c |  2 +-
 lib/librte_pmd_ixgbe/ixgbe_pf.c     | 19 ++++++++++++-------
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c   | 18 +++++++++++-------
 3 files changed, 24 insertions(+), 15 deletions(-)

diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index 8e9da3b..7551bcc 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -1514,7 +1514,7 @@ ixgbe_dev_configure(struct rte_eth_dev *dev)
 		if (conf->nb_queue_pools != ETH_16_POOLS &&
 			   conf->nb_queue_pools != ETH_32_POOLS) {
 			PMD_INIT_LOG(ERR, " VMDQ+DCB selected, "
-					"number of TX qqueue pools must be %d or %d\n",
+					"number of TX queue pools must be %d or %d\n",
 					ETH_16_POOLS, ETH_32_POOLS);
 			return (-EINVAL);
 		}
diff --git a/lib/librte_pmd_ixgbe/ixgbe_pf.c b/lib/librte_pmd_ixgbe/ixgbe_pf.c
index a7b9333..7c4afba 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_pf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_pf.c
@@ -109,9 +109,12 @@ int ixgbe_pf_host_init(struct rte_eth_dev *eth_dev)
 	/* Fill sriov structure using default configuration. */
 	retval = ixgbe_pf_configure_mq_sriov(eth_dev);
 	if (retval != 0) {
-		if (retval < 0)
-			PMD_INIT_LOG(ERR, " Setting up SRIOV with default device "
+		if (retval < 0) {
+			PMD_INIT_LOG(ERR, "Setting up SRIOV with default device "
 					"configuration should not fail. This is a BUG.");
+			return retval;
+		}
+
 		return 0;
 	}
 
@@ -652,7 +655,9 @@ 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_tx_q_per_pool;
+	struct ixgbe_dcb_config *dcbinfo =
+		IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private);
+	uint32_t default_q = RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx;
 
 	/* Verify if the PF supports the mbox APIs version or not */
 	switch (vfinfo[vf].api_version) {
@@ -670,10 +675,10 @@ 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
-	 */
+	if (dcbinfo->num_tcs.pg_tcs)
+		msgbuf[IXGBE_VF_TRANS_VLAN] = dcbinfo->num_tcs.pg_tcs;
+	else
+		msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
 
 	return 0;
 }
diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index e6766b3..2e3522c 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -3166,10 +3166,9 @@ void ixgbe_configure_dcb(struct rte_eth_dev *dev)
 
 	/* check support mq_mode for DCB */
 	if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) &&
-	    (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB))
-		return;
-
-	if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES)
+	    (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB) &&
+	    (dev_conf->txmode.mq_mode != ETH_MQ_TX_VMDQ_DCB) &&
+	    (dev_conf->txmode.mq_mode != ETH_MQ_TX_DCB))
 		return;
 
 	/** Configure DCB hardware **/
@@ -3442,8 +3441,13 @@ ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev)
 			ixgbe_config_vf_rss(dev);
 			break;
 
-		/* FIXME if support DCB/RSS together with VMDq & SRIOV */
+		/*
+		 * DCB will be configured during port startup.
+		 */
 		case ETH_MQ_RX_VMDQ_DCB:
+			break;
+
+		/* FIXME if support DCB+RSS together with VMDq & SRIOV */
 		case ETH_MQ_RX_VMDQ_DCB_RSS:
 			PMD_INIT_LOG(ERR,
 				"Could not support DCB with VMDq & SRIOV");
@@ -3488,8 +3492,8 @@ ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev)
 		switch (RTE_ETH_DEV_SRIOV(dev).active) {
 
 		/*
-		 * SRIOV active scheme
-		 * FIXME if support DCB together with VMDq & SRIOV
+		 * SRIOV active scheme.
+		 * Note: DCB will be configured during port startup.
 		 */
 		case ETH_64_POOLS:
 			mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF;
-- 
1.9.1