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netdevsim: collect statistics at RX side

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When the RX side of netdevsim was added, the RX statistics were missing,
making the driver unusable for GenerateTraffic() test framework.

This patch adds proper statistics tracking on RX side, complementing the
TX path.

Reviewed-by: Joe Damato <joe@dama.to>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20250618-netdevsim_stat-v4-2-19fe0d35e28e@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao
2025-06-18 01:32:43 -07:00
committed by Jakub Kicinski
parent f9e2511d80
commit 788eb4de60
1 changed files with 10 additions and 2 deletions
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12
drivers/net/netdevsim/netdev.c
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@@ -331,16 +331,24 @@ static int nsim_get_iflink(const struct net_device *dev)
static int nsim_rcv(struct nsim_rq *rq, int budget)
{
struct net_device *dev = rq->napi.dev;
struct sk_buff *skb;
int i;
unsigned int skblen;
int i, ret;
for (i = 0; i < budget; i++) {
if (skb_queue_empty(&rq->skb_queue))
break;
skb = skb_dequeue(&rq->skb_queue);
/* skb might be discard at netif_receive_skb, save the len */
skblen = skb->len;
skb_mark_napi_id(skb, &rq->napi);
netif_receive_skb(skb);
ret = netif_receive_skb(skb);
if (ret == NET_RX_SUCCESS)
dev_dstats_rx_add(dev, skblen);
else
dev_dstats_rx_dropped(dev);
}
return i;