[dpdk-dev] [PATCH v2 1/8] net/i40e: add API to convert VF MAC to VSI index

[David Hunt]

From: "Sexton, Rory" <rory.sexton at 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 at intel.com>
Signed-off-by: Rory Sexton <rory.sexton at intel.com>
Signed-off-by: David Hunt <david.hunt at intel.com>
---
 drivers/net/i40e/rte_pmd_i40e.c | 35 +++++++++++++++++++++++++++++++++++
 drivers/net/i40e/rte_pmd_i40e.h | 13 +++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/drivers/net/i40e/rte_pmd_i40e.c b/drivers/net/i40e/rte_pmd_i40e.c
index f12b7f4..85b540f 100644
--- a/drivers/net/i40e/rte_pmd_i40e.c
+++ b/drivers/net/i40e/rte_pmd_i40e.c
@@ -2115,3 +2115,38 @@ int rte_pmd_i40e_ptype_mapping_replace(uint8_t port,
 
 	return 0;
 }
+
+uint64_t
+rte_pmd_i40e_query_vfid_by_mac(uint8_t port, uint64_t vf_mac) {
+	struct rte_eth_dev *dev;
+	struct ether_addr *vf_mac_addr = (struct ether_addr *)&vf_mac;
+	struct ether_addr *mac;
+	struct i40e_pf *pf;
+	int i, x;
+	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 (x = 0; x < vf_num; x++) {
+		int mac_addr_matches = 1;
+		vf = &pf->vfs[x];
+		mac = &vf->mac_addr;
+
+		for (i = 0; i < ETHER_ADDR_LEN; i++) {
+			if (mac->addr_bytes[i] != vf_mac_addr->addr_bytes[i])
+				mac_addr_matches = 0;
+		}
+		if (mac_addr_matches)
+			return x;
+	}
+
+	return -EINVAL;
+}
diff --git a/drivers/net/i40e/rte_pmd_i40e.h b/drivers/net/i40e/rte_pmd_i40e.h
index 356fa89..6984105 100644
--- a/drivers/net/i40e/rte_pmd_i40e.h
+++ b/drivers/net/i40e/rte_pmd_i40e.h
@@ -637,4 +637,17 @@ int rte_pmd_i40e_ptype_mapping_replace(uint8_t port,
 				       uint8_t mask,
 				       uint32_t pkt_type);
 
+/**
+ * Translate a VF mac address into VF index in array of pf->vfs
+ *
+ * @param port
+ *    pointer to port identifier of the device
+ * @param vf_mac
+ *    the mac address of the vf to determine index of
+ * @return
+ *    -(-22 EINVAL) the vf mac does not exist on this port
+ *    -(!-22) the index of vfid in pf->vfs
+ */
+uint64_t rte_pmd_i40e_query_vfid_by_mac(uint8_t port, uint64_t vf_mac);
+
 #endif /* _PMD_I40E_H_ */
-- 
2.7.4