linux-kernel - [PATCH] vdpa/mlx5: Add the support of set mac address

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Message-ID: <20240708065549.89422-1-lulu@redhat.com>
Date: Mon,  8 Jul 2024 14:55:49 +0800
From: Cindy Lu <lulu@...hat.com>
To: lulu@...hat.com,
	dtatulea@...dia.com,
	mst@...hat.com,
	jasowang@...hat.com,
	parav@...dia.com,
	sgarzare@...hat.com,
	netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: [PATCH] vdpa/mlx5: Add the support of set mac address

Add the function to support setting the MAC address.
For vdpa/mlx5, the function will use mlx5_mpfs_add_mac
to set the mac address

Tested in ConnectX-6 Dx device

Signed-off-by: Cindy Lu <lulu@...hat.com>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 26ba7da6b410..f78701386690 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -3616,10 +3616,33 @@ static void mlx5_vdpa_dev_del(struct vdpa_mgmt_dev *v_mdev, struct vdpa_device *
 	destroy_workqueue(wq);
 	mgtdev->ndev = NULL;
 }
+static int mlx5_vdpa_set_attr_mac(struct vdpa_mgmt_dev *v_mdev,
+				  struct vdpa_device *dev,
+				  const struct vdpa_dev_set_config *add_config)
+{
+	struct mlx5_vdpa_dev *mvdev = to_mvdev(dev);
+	struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
+	struct mlx5_core_dev *mdev = mvdev->mdev;
+	struct virtio_net_config *config = &ndev->config;
+	int err;
+	struct mlx5_core_dev *pfmdev;
+
+	if (add_config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)) {
+		if (!is_zero_ether_addr(add_config->net.mac)) {
+			memcpy(config->mac, add_config->net.mac, ETH_ALEN);
+			pfmdev = pci_get_drvdata(pci_physfn(mdev->pdev));
+			err = mlx5_mpfs_add_mac(pfmdev, config->mac);
+			if (err)
+				return -1;
+		}
+	}
+	return 0;
+}
 
 static const struct vdpa_mgmtdev_ops mdev_ops = {
 	.dev_add = mlx5_vdpa_dev_add,
 	.dev_del = mlx5_vdpa_dev_del,
+	.dev_set_attr = mlx5_vdpa_set_attr_mac,
 };
 
 static struct virtio_device_id id_table[] = {
-- 
2.45.0