[dpdk-dev] [PATCH] e1000: fix VF mac address issue

[dpdk-dev] [PATCH] e1000: fix VF mac address issue

[Wenzhuo Lu]

If use DPDK PF + DPDK VF on igb NICs, we find the MAC address of VF
port is always 0. Because we forget to give it a value if this MAC
address is not assigned by PF. This patch'll assign a random MAC
address to igb VF port as ixgbe does.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/e1000/igb_ethdev.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 31452ae..6c2aa8c 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -846,6 +846,7 @@ eth_igbvf_dev_init(struct rte_eth_dev *eth_dev)
 	struct e1000_hw *hw =
 		E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 	int diag;
+	struct ether_addr *perm_addr = (struct ether_addr *)hw->mac.perm_addr;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -898,6 +899,26 @@ eth_igbvf_dev_init(struct rte_eth_dev *eth_dev)
 		return -ENOMEM;
 	}
 
+	/* Generate a random MAC address, if none was assigned by PF. */
+	if (is_zero_ether_addr(perm_addr)) {
+		eth_random_addr(perm_addr->addr_bytes);
+		diag = e1000_rar_set(hw, perm_addr->addr_bytes, 0);
+		if (diag) {
+			rte_free(eth_dev->data->mac_addrs);
+			eth_dev->data->mac_addrs = NULL;
+			return diag;
+		}
+		PMD_INIT_LOG(INFO, "\tVF MAC address not assigned by Host PF");
+		PMD_INIT_LOG(INFO, "\tAssign randomly generated MAC address "
+			     "%02x:%02x:%02x:%02x:%02x:%02x",
+			     perm_addr->addr_bytes[0],
+			     perm_addr->addr_bytes[1],
+			     perm_addr->addr_bytes[2],
+			     perm_addr->addr_bytes[3],
+			     perm_addr->addr_bytes[4],
+			     perm_addr->addr_bytes[5]);
+	}
+
 	/* Copy the permanent MAC address */
 	ether_addr_copy((struct ether_addr *) hw->mac.perm_addr,
 			&eth_dev->data->mac_addrs[0]);
-- 
1.9.3

Re: [dpdk-dev] [PATCH] e1000: fix VF mac address issue

[Thomas Monjalon]

2015-11-27 14:07, Wenzhuo Lu:
> If use DPDK PF + DPDK VF on igb NICs, we find the MAC address of VF
> port is always 0. Because we forget to give it a value if this MAC
> address is not assigned by PF. This patch'll assign a random MAC
> address to igb VF port as ixgbe does.
> 
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

Applied with an entry in the release notes, thanks