[dpdk-dev] [PATCH 3/5] virtio: don't set mac table unless negotiated

[Stephen Hemminger <stephen@networkplumber.org>]

From: Stephen Hemminger <shemming@brocade.com>

Don't attempt to set the MAC address table unless the host allows
it in feature negotiation. Also, don't return a value from mac_table_set
since all callers ignore the return value.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/virtio/virtio_ethdev.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 3476ad3..ad49fc1 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -668,7 +668,7 @@ virtio_get_hwaddr(struct virtio_hw *hw)
 	}
 }
 
-static int
+static void
 virtio_mac_table_set(struct virtio_hw *hw,
 		     const struct virtio_net_ctrl_mac *uc,
 		     const struct virtio_net_ctrl_mac *mc)
@@ -676,6 +676,11 @@ virtio_mac_table_set(struct virtio_hw *hw,
 	struct virtio_pmd_ctrl ctrl;
 	int err, len[2];
 
+	if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
+		PMD_DRV_LOG(INFO, "host does not support mac table\n");
+		return;
+	}
+
 	ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
 	ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
 
@@ -688,8 +693,6 @@ virtio_mac_table_set(struct virtio_hw *hw,
 	err = virtio_send_command(hw->cvq, &ctrl, len, 2);
 	if (err != 0)
 		PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
-
-	return err;
 }
 
 static void
-- 
2.1.4