netdev - [PATCH net] gve: Recording rx queue before sending to napi

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Date:   Mon,  7 Feb 2022 09:59:01 -0800
From:   Jeroen de Borst <jeroendb@...gle.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, Tao Liu <xliutaox@...gle.com>
Subject: [PATCH net] gve: Recording rx queue before sending to napi

From: Tao Liu <xliutaox@...gle.com>

This caused a significant performance degredation when using generic XDP
with multiple queues.

Fixes: f5cedc84a30d2 ("gve: Add transmit and receive support")
Signed-off-by: Tao Liu <xliutaox@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_rx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c
index 2068199445bd..e4e98aa7745f 100644
--- a/drivers/net/ethernet/google/gve/gve_rx.c
+++ b/drivers/net/ethernet/google/gve/gve_rx.c
@@ -609,6 +609,7 @@ static bool gve_rx(struct gve_rx_ring *rx, netdev_features_t feat,
 
 	*packet_size_bytes = skb->len + (skb->protocol ? ETH_HLEN : 0);
 	*work_done = work_cnt;
+	skb_record_rx_queue(skb, rx->q_num);
 	if (skb_is_nonlinear(skb))
 		napi_gro_frags(napi);
 	else
-- 
2.35.0.263.gb82422642f-goog