Add generic XDP stats callbacks to be able to query 7 per-channel
virtio-net XDP stats via generic XDP stats infra.
Signed-off-by: Alexander Lobakin <alexandr.lobakin@xxxxxxxxx>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@xxxxxxxxx>
---
drivers/net/virtio_net.c | 56 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f7c5511e510c..0b4cc9662d91 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1919,6 +1919,60 @@ static void virtnet_stats(struct net_device *dev,
tot->rx_frame_errors = dev->stats.rx_frame_errors;
}
+static int virtnet_get_xdp_stats_nch(const struct net_device *dev, u32 attr_id)
+{
+ const struct virtnet_info *vi = netdev_priv(dev);
+
+ switch (attr_id) {
+ case IFLA_XDP_XSTATS_TYPE_XDP:
+ return vi->curr_queue_pairs;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int virtnet_get_xdp_stats(const struct net_device *dev, u32 attr_id,
+ void *attr_data)
+{
+ const struct virtnet_info *vi = netdev_priv(dev);
+ struct ifla_xdp_stats *xdp_stats = attr_data;
+ u32 i;
+
+ switch (attr_id) {
+ case IFLA_XDP_XSTATS_TYPE_XDP:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ for (i = 0; i < vi->curr_queue_pairs; i++) {
+ const struct virtnet_rq_stats *rqs = &vi->rq[i].stats;
+ const struct virtnet_sq_stats *sqs = &vi->sq[i].stats;
+ u32 start;
+
+ do {
+ start = u64_stats_fetch_begin_irq(&rqs->syncp);
+
+ xdp_stats->packets = rqs->xdp_packets;
+ xdp_stats->tx = rqs->xdp_tx;
+ xdp_stats->redirect = rqs->xdp_redirects;
+ xdp_stats->drop = rqs->xdp_drops;
+ xdp_stats->errors = rqs->xdp_errors;
+ } while (u64_stats_fetch_retry_irq(&rqs->syncp, start));
+
+ do {
+ start = u64_stats_fetch_begin_irq(&sqs->syncp);
+
+ xdp_stats->xmit_packets = sqs->xdp_xmit;
+ xdp_stats->xmit_errors = sqs->xdp_xmit_errors;
+ } while (u64_stats_fetch_retry_irq(&sqs->syncp, start));
+
+ xdp_stats++;
+ }
+
+ return 0;
+}
+
static void virtnet_ack_link_announce(struct virtnet_info *vi)
{
rtnl_lock();
@@ -2717,6 +2771,8 @@ static const struct net_device_ops virtnet_netdev = {
.ndo_set_mac_address = virtnet_set_mac_address,
.ndo_set_rx_mode = virtnet_set_rx_mode,
.ndo_get_stats64 = virtnet_stats,
+ .ndo_get_xdp_stats_nch = virtnet_get_xdp_stats_nch,
+ .ndo_get_xdp_stats = virtnet_get_xdp_stats,
.ndo_vlan_rx_add_vid = virtnet_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = virtnet_vlan_rx_kill_vid,
.ndo_bpf = virtnet_xdp,
--
2.33.1
