net/bnxt: determine the Rx status of VF

This patch adds code to determine the Rx status of a VF.
It adds the rte_pmd_bnxt_get_vf_rx_status call, which calculates
the VNIC count of the function to get the Rx status.

Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

drivers/net/bnxt/bnxt_hwrm.c

@@ -2626,6 +2626,30 @@ int bnxt_hwrm_port_led_cfg(struct bnxt *bp, bool led_on)
 	return rc;
 }
 
+static void bnxt_vnic_count(struct bnxt_vnic_info *vnic, void *cbdata)
+{
+	uint32_t *count = cbdata;
+
+	if (vnic->func_default)
+		*count = *count + 1;
+}
+
+static int bnxt_vnic_count_hwrm_stub(struct bnxt *bp __rte_unused,
+				     struct bnxt_vnic_info *vnic __rte_unused)
+{
+	return 0;
+}
+
+int bnxt_vf_default_vnic_count(struct bnxt *bp, uint16_t vf)
+{
+	uint32_t count = 0;
+
+	bnxt_hwrm_func_vf_vnic_query_and_config(bp, vf, bnxt_vnic_count,
+	    &count, bnxt_vnic_count_hwrm_stub);
+
+	return count;
+}
+
 static int bnxt_hwrm_func_vf_vnic_query(struct bnxt *bp, uint16_t vf,
 					uint16_t *vnic_ids)
 {

drivers/net/bnxt/bnxt_hwrm.h

@@ -141,6 +141,7 @@ int bnxt_hwrm_port_clr_stats(struct bnxt *bp);
 int bnxt_hwrm_port_led_cfg(struct bnxt *bp, bool led_on);
 int bnxt_hwrm_port_led_qcaps(struct bnxt *bp);
 int bnxt_hwrm_func_cfg_vf_set_flags(struct bnxt *bp, uint16_t vf);
+int bnxt_vf_default_vnic_count(struct bnxt *bp, uint16_t vf);
 int bnxt_hwrm_func_vf_vnic_query_and_config(struct bnxt *bp, uint16_t vf,
 	void (*vnic_cb)(struct bnxt_vnic_info *, void *), void *cbdata,
 	int (*hwrm_cb)(struct bnxt *bp, struct bnxt_vnic_info *vnic));

drivers/net/bnxt/rte_pmd_bnxt.c

@@ -515,6 +515,32 @@ int rte_pmd_bnxt_reset_vf_stats(uint8_t port,
 	return bnxt_hwrm_func_clr_stats(bp, bp->pf.first_vf_id + vf_id);
 }
 
+int rte_pmd_bnxt_get_vf_rx_status(uint8_t port, uint16_t vf_id)
+{
+	struct rte_eth_dev *dev;
+	struct rte_eth_dev_info dev_info;
+	struct bnxt *bp;
+
+	dev = &rte_eth_devices[port];
+	if (!is_bnxt_supported(dev))
+		return -ENOTSUP;
+
+	rte_eth_dev_info_get(port, &dev_info);
+	bp = (struct bnxt *)dev->data->dev_private;
+
+	if (vf_id >= dev_info.max_vfs)
+		return -EINVAL;
+
+	if (!BNXT_PF(bp)) {
+		RTE_LOG(ERR, PMD,
+			"Attempt to query VF %d RX stats on non-PF port %d!\n",
+			vf_id, port);
+		return -ENOTSUP;
+	}
+
+	return bnxt_vf_default_vnic_count(bp, vf_id);
+}
+
 int rte_pmd_bnxt_get_vf_tx_drop_count(uint8_t port, uint16_t vf_id,
 				      uint64_t *count)
 {

drivers/net/bnxt/rte_pmd_bnxt.h

@@ -217,6 +217,23 @@ int rte_pmd_bnxt_reset_vf_stats(uint8_t port,
  */
 int rte_pmd_bnxt_set_vf_vlan_anti_spoof(uint8_t port, uint16_t vf, uint8_t on);
 
+
+/**
+ * Returns the number of default RX queues on a VF
+ *
+ * @param port
+ *    The port identifier of the Ethernet device.
+ * @param vf
+ *   VF id.
+ * @return
+ *   - Non-negative value - Number of default RX queues
+ *   - (-EINVAL) if bad parameter.
+ *   - (-ENOTSUP) if on a function without VFs
+ *   - (-ENOMEM) on an allocation failure
+ *   - (-1) firmware interface error
+ */
+int rte_pmd_bnxt_get_vf_rx_status(uint8_t port, uint16_t vf_id);
+
 /**
  * Queries the TX drop counter for the function
  *

drivers/net/bnxt/rte_pmd_bnxt_version.map

@@ -1,6 +1,7 @@
 DPDK_17.08 {
 	global:
 
+	rte_pmd_bnxt_get_vf_rx_status;
 	rte_pmd_bnxt_get_vf_stats;
 	rte_pmd_bnxt_get_vf_tx_drop_count;
 	rte_pmd_bnxt_reset_vf_stats;