netdev - [PATCH net-next v2 07/15] xsk: Move pool registration into single function

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Message-ID: <20251015140140.62273-8-daniel@iogearbox.net>
Date: Wed, 15 Oct 2025 16:01:32 +0200
From: Daniel Borkmann <daniel@...earbox.net>
To: netdev@...r.kernel.org
Cc: bpf@...r.kernel.org,
	kuba@...nel.org,
	davem@...emloft.net,
	razor@...ckwall.org,
	pabeni@...hat.com,
	willemb@...gle.com,
	sdf@...ichev.me,
	john.fastabend@...il.com,
	martin.lau@...nel.org,
	jordan@...fe.io,
	maciej.fijalkowski@...el.com,
	magnus.karlsson@...el.com,
	dw@...idwei.uk,
	toke@...hat.com,
	yangzhenze@...edance.com,
	wangdongdong.6@...edance.com
Subject: [PATCH net-next v2 07/15] xsk: Move pool registration into single function

Small refactor to move the pool registration into xsk_reg_pool_at_qid,
such that the netdev and queue_id can be registered there. No change
in functionality.

Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Co-developed-by: David Wei <dw@...idwei.uk>
Signed-off-by: David Wei <dw@...idwei.uk>
---
 net/xdp/xsk.c           | 5 +++++
 net/xdp/xsk_buff_pool.c | 5 -----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 7b0c68a70888..0e9a385f5680 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -141,6 +141,11 @@ int xsk_reg_pool_at_qid(struct net_device *dev, struct xsk_buff_pool *pool,
 			      dev->real_num_rx_queues,
 			      dev->real_num_tx_queues))
 		return -EINVAL;
+	if (xsk_get_pool_from_qid(dev, queue_id))
+		return -EBUSY;
+
+	pool->netdev = dev;
+	pool->queue_id = queue_id;
 
 	if (queue_id < dev->real_num_rx_queues)
 		dev->_rx[queue_id].pool = pool;
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index 26165baf99f4..62a176996f02 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -173,11 +173,6 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
 	if (force_zc && force_copy)
 		return -EINVAL;
 
-	if (xsk_get_pool_from_qid(netdev, queue_id))
-		return -EBUSY;
-
-	pool->netdev = netdev;
-	pool->queue_id = queue_id;
 	err = xsk_reg_pool_at_qid(netdev, pool, queue_id);
 	if (err)
 		return err;
-- 
2.43.0