netdevsim: pass packets thru GRO on Rx

To replace veth in software GRO testing with netdevsim we need
GRO support in netdevsim. Luckily we already have NAPI support
so this change is trivial (compared to veth).

Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20251120021024.2944527-9-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index fa1d97885caaf2c8a4ee59e4ade47ee3fb8f16f2..2b713db16cd0e3df306caec7281fccb911036757 100644 (file)
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -433,13 +433,8 @@ static int nsim_rcv(struct nsim_rq *rq, int budget)
                }
 
                /* skb might be discard at netif_receive_skb, save the len */
-               skblen = skb->len;
-               skb_mark_napi_id(skb, &rq->napi);
-               ret = netif_receive_skb(skb);
-               if (ret == NET_RX_SUCCESS)
-                       dev_dstats_rx_add(dev, skblen);
-               else
-                       dev_dstats_rx_dropped(dev);
+               dev_dstats_rx_add(dev, skb->len);
+               napi_gro_receive(&rq->napi, skb);
        }
 
        nsim_start_peer_tx_queue(dev, rq);