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Message-ID: <20240328170309.2172584-6-edumazet@google.com>
Date: Thu, 28 Mar 2024 17:03:06 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, eric.dumazet@...il.com,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 5/8] net: enqueue_to_backlog() cleanup
We can remove a goto and a label by reversing a condition.
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
net/core/dev.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index be2392ba56bc57bed456e2748b332d4971c83a4e..4e52745f23412bac6d3ff1b9f4d9f2ce4a2eb666 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4806,20 +4806,18 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
backlog_lock_irq_save(sd, &flags);
qlen = skb_queue_len(&sd->input_pkt_queue);
if (qlen <= max_backlog && !skb_flow_limit(skb, qlen)) {
- if (qlen) {
-enqueue:
- __skb_queue_tail(&sd->input_pkt_queue, skb);
- input_queue_tail_incr_save(sd, qtail);
- backlog_unlock_irq_restore(sd, &flags);
- return NET_RX_SUCCESS;
+ if (!qlen) {
+ /* Schedule NAPI for backlog device. We can use
+ * non atomic operation as we own the queue lock.
+ */
+ if (!__test_and_set_bit(NAPI_STATE_SCHED,
+ &sd->backlog.state))
+ napi_schedule_rps(sd);
}
-
- /* Schedule NAPI for backlog device
- * We can use non atomic operation since we own the queue lock
- */
- if (!__test_and_set_bit(NAPI_STATE_SCHED, &sd->backlog.state))
- napi_schedule_rps(sd);
- goto enqueue;
+ __skb_queue_tail(&sd->input_pkt_queue, skb);
+ input_queue_tail_incr_save(sd, qtail);
+ backlog_unlock_irq_restore(sd, &flags);
+ return NET_RX_SUCCESS;
}
backlog_unlock_irq_restore(sd, &flags);
--
2.44.0.478.gd926399ef9-goog
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