[dpdk-dev] [PATCH v9 1/9] net/i40e: add API to convert VF MAC to VF id

[David Hunt <david.hunt@intel.com>]

From: "Sexton, Rory" <rory.sexton@intel.com>

Need a way to convert a vf id to a pf id on the host so as to query the pf
for relevant statistics which are used for the frequency changes in the
vm_power_manager app. Used when profiles are passed down from the guest
to the host, allowing the host to map the vfs to pfs.

Signed-off-by: Nemanja Marjanovic <nemanja.marjanovic@intel.com>
Signed-off-by: Rory Sexton <rory.sexton@intel.com>
Signed-off-by: David Hunt <david.hunt@intel.com>
Reviewed-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
 drivers/net/i40e/rte_pmd_i40e.c           | 30 ++++++++++++++++++++++++++++++
 drivers/net/i40e/rte_pmd_i40e.h           | 15 +++++++++++++++
 drivers/net/i40e/rte_pmd_i40e_version.map |  1 +
 3 files changed, 46 insertions(+)

diff --git a/drivers/net/i40e/rte_pmd_i40e.c b/drivers/net/i40e/rte_pmd_i40e.c
index 0988023..103e161 100644
--- a/drivers/net/i40e/rte_pmd_i40e.c
+++ b/drivers/net/i40e/rte_pmd_i40e.c
@@ -2430,3 +2430,33 @@ rte_pmd_i40e_flow_type_mapping_update(
 
 	return 0;
 }
+
+int
+rte_pmd_i40e_query_vfid_by_mac(uint16_t port, const struct ether_addr *vf_mac)
+{
+	struct rte_eth_dev *dev;
+	struct ether_addr *mac;
+	struct i40e_pf *pf;
+	int vf_id;
+	struct i40e_pf_vf *vf;
+	uint16_t vf_num;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
+	dev = &rte_eth_devices[port];
+
+	if (!is_i40e_supported(dev))
+		return -ENOTSUP;
+
+	pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+	vf_num = pf->vf_num;
+
+	for (vf_id = 0; vf_id < vf_num; vf_id++) {
+		vf = &pf->vfs[vf_id];
+		mac = &vf->mac_addr;
+
+		if (is_same_ether_addr(mac, vf_mac))
+			return vf_id;
+	}
+
+	return -EINVAL;
+}
diff --git a/drivers/net/i40e/rte_pmd_i40e.h b/drivers/net/i40e/rte_pmd_i40e.h
index 8fa5869..91f647e 100644
--- a/drivers/net/i40e/rte_pmd_i40e.h
+++ b/drivers/net/i40e/rte_pmd_i40e.h
@@ -737,4 +737,19 @@ int rte_pmd_i40e_flow_type_mapping_get(
  */
 int rte_pmd_i40e_flow_type_mapping_reset(uint8_t port);
 
+/**
+ * On the PF, find VF index based on VF MAC address
+ *
+ * @param port
+ *    pointer to port identifier of the device
+ * @param vf_mac
+ *    the mac address of the vf to determine index of
+ * @return
+ *    The index of vfid If successful.
+ *    -EINVAL: vf mac address does not exist for this port
+ *    -ENOTSUP: i40e not supported for this port.
+ */
+int rte_pmd_i40e_query_vfid_by_mac(uint16_t port,
+					const struct ether_addr *vf_mac);
+
 #endif /* _PMD_I40E_H_ */
diff --git a/drivers/net/i40e/rte_pmd_i40e_version.map b/drivers/net/i40e/rte_pmd_i40e_version.map
index 9292454..3f5871c 100644
--- a/drivers/net/i40e/rte_pmd_i40e_version.map
+++ b/drivers/net/i40e/rte_pmd_i40e_version.map
@@ -53,5 +53,6 @@ DPDK_17.11 {
 	rte_pmd_i40e_flow_type_mapping_update;
 	rte_pmd_i40e_flow_type_mapping_get;
 	rte_pmd_i40e_flow_type_mapping_reset;
+	rte_pmd_i40e_query_vfid_by_mac;
 
 } DPDK_17.08;
-- 
2.7.4