netdev - [PATCH net-next 13/15] eth: fbnic: defer page pool recycling activation to queue start

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Message-ID: <20250820025704.166248-14-kuba@kernel.org>
Date: Tue, 19 Aug 2025 19:57:02 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	almasrymina@...gle.com,
	michael.chan@...adcom.com,
	tariqt@...dia.com,
	dtatulea@...dia.com,
	hawk@...nel.org,
	ilias.apalodimas@...aro.org,
	alexanderduyck@...com,
	sdf@...ichev.me,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 13/15] eth: fbnic: defer page pool recycling activation to queue start

We need to be more careful about when direct page pool recycling
is enabled in preparation for queue ops support. Don't set the
NAPI pointer, call page_pool_enable_direct_recycling() from
the function that activates the queue (once the config can
no longer fail).

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
index 44d9f1598820..958793be21a1 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
@@ -1528,7 +1528,6 @@ fbnic_alloc_qt_page_pools(struct fbnic_net *fbn, struct fbnic_napi_vector *nv,
 		.dma_dir = DMA_BIDIRECTIONAL,
 		.offset = 0,
 		.max_len = PAGE_SIZE,
-		.napi	= &nv->napi,
 		.netdev	= fbn->netdev,
 		.queue_idx = rxq_idx,
 	};
@@ -2615,6 +2614,11 @@ static void __fbnic_nv_enable(struct fbnic_napi_vector *nv)
 	for (j = 0; j < nv->rxt_count; j++, t++) {
 		struct fbnic_q_triad *qt = &nv->qt[t];
 
+		page_pool_enable_direct_recycling(qt->sub0.page_pool,
+						  &nv->napi);
+		page_pool_enable_direct_recycling(qt->sub1.page_pool,
+						  &nv->napi);
+
 		fbnic_enable_bdq(&qt->sub0, &qt->sub1);
 		fbnic_config_drop_mode_rcq(nv, &qt->cmpl);
 		fbnic_enable_rcq(nv, &qt->cmpl);
-- 
2.50.1