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Message-Id: <20251118164333.24842-3-viswanathiyyappan@gmail.com>
Date: Tue, 18 Nov 2025 22:13:33 +0530
From: I Viswanath <viswanathiyyappan@...il.com>
To: kuba@...nel.org,
andrew+netdev@...n.ch,
davem@...emloft.net,
edumazet@...gle.com,
pabeni@...hat.com,
horms@...nel.org,
mst@...hat.com,
jasowang@...hat.com,
xuanzhuo@...ux.alibaba.com,
eperezma@...hat.com,
sdf@...ichev.me,
kuniyu@...gle.com,
skhawaja@...gle.com,
aleksander.lobakin@...el.com
Cc: virtualization@...ts.linux.dev,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-kernel-mentees@...ts.linux.dev,
I Viswanath <viswanathiyyappan@...il.com>
Subject: [RFT net-next v4 2/2] virtio-net: Implement ndO_write_rx_mode callback
Implement ndo_write_rx_mode callback for virtio-net
Signed-off-by: I Viswanath <viswanathiyyappan@...il.com>
---
drivers/net/virtio_net.c | 56 +++++++++++++++++-----------------------
1 file changed, 24 insertions(+), 32 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index cfa006b88688..20494ed5a0f6 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -460,9 +460,6 @@ struct virtnet_info {
/* Work struct for config space updates */
struct work_struct config_work;
- /* Work struct for setting rx mode */
- struct work_struct rx_mode_work;
-
/* OK to queue work setting RX mode? */
bool rx_mode_work_enabled;
@@ -3857,18 +3854,17 @@ static int virtnet_close(struct net_device *dev)
return 0;
}
-static void virtnet_rx_mode_work(struct work_struct *work)
+static void virtnet_write_rx_mode(struct net_device *dev)
{
- struct virtnet_info *vi =
- container_of(work, struct virtnet_info, rx_mode_work);
+ struct virtnet_info *vi = netif_rx_mode_get_priv_ptr(dev);
u8 *promisc_allmulti __free(kfree) = NULL;
- struct net_device *dev = vi->dev;
struct scatterlist sg[2];
struct virtio_net_ctrl_mac *mac_data;
- struct netdev_hw_addr *ha;
+ char *ha_addr;
int uc_count;
int mc_count;
void *buf;
+ int idx;
int i;
/* We can't dynamically set ndo_set_rx_mode, so return gracefully */
@@ -3881,9 +3877,8 @@ static void virtnet_rx_mode_work(struct work_struct *work)
return;
}
- rtnl_lock();
-
- *promisc_allmulti = !!(dev->flags & IFF_PROMISC);
+ *promisc_allmulti = netif_rx_mode_get_bit(dev,
+ NETIF_RX_MODE_PROM_EN);
sg_init_one(sg, promisc_allmulti, sizeof(*promisc_allmulti));
if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
@@ -3891,7 +3886,8 @@ static void virtnet_rx_mode_work(struct work_struct *work)
dev_warn(&dev->dev, "Failed to %sable promisc mode.\n",
*promisc_allmulti ? "en" : "dis");
- *promisc_allmulti = !!(dev->flags & IFF_ALLMULTI);
+ *promisc_allmulti = netif_rx_mode_get_bit(dev,
+ NETIF_RX_MODE_ALLMULTI_EN);
sg_init_one(sg, promisc_allmulti, sizeof(*promisc_allmulti));
if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
@@ -3899,27 +3895,24 @@ static void virtnet_rx_mode_work(struct work_struct *work)
dev_warn(&dev->dev, "Failed to %sable allmulti mode.\n",
*promisc_allmulti ? "en" : "dis");
- netif_addr_lock_bh(dev);
+ uc_count = netif_rx_mode_get_uc_count(dev);
+ mc_count = netif_rx_mode_get_mc_count(dev);
- uc_count = netdev_uc_count(dev);
- mc_count = netdev_mc_count(dev);
/* MAC filter - use one buffer for both lists */
buf = kzalloc(((uc_count + mc_count) * ETH_ALEN) +
(2 * sizeof(mac_data->entries)), GFP_ATOMIC);
mac_data = buf;
- if (!buf) {
- netif_addr_unlock_bh(dev);
- rtnl_unlock();
+ if (!buf)
return;
- }
sg_init_table(sg, 2);
/* Store the unicast list and count in the front of the buffer */
mac_data->entries = cpu_to_virtio32(vi->vdev, uc_count);
i = 0;
- netdev_for_each_uc_addr(ha, dev)
- memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
+
+ netif_rx_mode_for_each_uc_addr(dev, ha_addr, idx)
+ memcpy(&mac_data->macs[i++][0], ha_addr, ETH_ALEN);
sg_set_buf(&sg[0], mac_data,
sizeof(mac_data->entries) + (uc_count * ETH_ALEN));
@@ -3929,10 +3922,8 @@ static void virtnet_rx_mode_work(struct work_struct *work)
mac_data->entries = cpu_to_virtio32(vi->vdev, mc_count);
i = 0;
- netdev_for_each_mc_addr(ha, dev)
- memcpy(&mac_data->macs[i++][0], ha->addr, ETH_ALEN);
-
- netif_addr_unlock_bh(dev);
+ netif_rx_mode_for_each_mc_addr(dev, ha_addr, idx)
+ memcpy(&mac_data->macs[i++][0], ha_addr, ETH_ALEN);
sg_set_buf(&sg[1], mac_data,
sizeof(mac_data->entries) + (mc_count * ETH_ALEN));
@@ -3941,17 +3932,18 @@ static void virtnet_rx_mode_work(struct work_struct *work)
VIRTIO_NET_CTRL_MAC_TABLE_SET, sg))
dev_warn(&dev->dev, "Failed to set MAC filter table.\n");
- rtnl_unlock();
-
kfree(buf);
}
static void virtnet_set_rx_mode(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
+ char cfg_disabled;
+
+ cfg_disabled = !vi->rx_mode_work_enabled;
+ netif_rx_mode_set_bit(dev, NETIF_RX_MODE_SET_DIS, cfg_disabled);
- if (vi->rx_mode_work_enabled)
- schedule_work(&vi->rx_mode_work);
+ netif_rx_mode_set_priv_ptr(dev, vi);
}
static int virtnet_vlan_rx_add_vid(struct net_device *dev,
@@ -5767,7 +5759,7 @@ static void virtnet_freeze_down(struct virtio_device *vdev)
/* Make sure no work handler is accessing the device */
flush_work(&vi->config_work);
disable_rx_mode_work(vi);
- flush_work(&vi->rx_mode_work);
+ netif_rx_mode_flush_work(vi->dev);
if (netif_running(vi->dev)) {
rtnl_lock();
@@ -6270,6 +6262,7 @@ static const struct net_device_ops virtnet_netdev = {
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = virtnet_set_mac_address,
.ndo_set_rx_mode = virtnet_set_rx_mode,
+ .ndo_write_rx_mode = virtnet_write_rx_mode,
.ndo_get_stats64 = virtnet_stats,
.ndo_vlan_rx_add_vid = virtnet_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = virtnet_vlan_rx_kill_vid,
@@ -6891,7 +6884,6 @@ static int virtnet_probe(struct virtio_device *vdev)
vdev->priv = vi;
INIT_WORK(&vi->config_work, virtnet_config_changed_work);
- INIT_WORK(&vi->rx_mode_work, virtnet_rx_mode_work);
spin_lock_init(&vi->refill_lock);
if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF)) {
@@ -7196,7 +7188,7 @@ static void virtnet_remove(struct virtio_device *vdev)
/* Make sure no work handler is accessing the device. */
flush_work(&vi->config_work);
disable_rx_mode_work(vi);
- flush_work(&vi->rx_mode_work);
+ netif_rx_mode_flush_work(vi->dev);
virtnet_free_irq_moder(vi);
--
2.34.1
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