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netdevsim: Mark NAPI ID on skb in nsim_rcv

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[ Upstream commit f71c549b26a33fd62f1e9c7deeba738bfc73fbfc ]

Previously, nsim_rcv was not marking the NAPI ID on the skb, leading to
applications seeing a napi ID of 0 when using SO_INCOMING_NAPI_ID.

To add to the userland confusion, netlink appears to correctly report
the NAPI IDs for netdevsim queues but the resulting file descriptor from
a call to accept() was reporting a NAPI ID of 0.

Signed-off-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20250424002746.16891-2-jdamato@fastly.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Joe Damato
2025-04-24 00:27:31 +00:00
committed by Greg Kroah-Hartman
parent 606b577368
commit 4e42f355c5
1 changed files with 2 additions and 0 deletions
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2
drivers/net/netdevsim/netdev.c
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@@ -25,6 +25,7 @@
#include <net/pkt_cls.h>
#include <net/rtnetlink.h>
#include <net/udp_tunnel.h>
#include <net/busy_poll.h>
#include "netdevsim.h"
@@ -341,6 +342,7 @@ static int nsim_rcv(struct nsim_rq *rq, int budget)
break;
skb = skb_dequeue(&rq->skb_queue);
skb_mark_napi_id(skb, &rq->napi);
netif_receive_skb(skb);
}