netdev - [PATCH net-next 03/13] igb: Add support for persistent NAPI config

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Message-ID: <20250429234651.3982025-4-anthony.l.nguyen@intel.com>
Date: Tue, 29 Apr 2025 16:46:38 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Kurt Kanzenbach <kurt@...utronix.de>,
	anthony.l.nguyen@...el.com,
	bigeasy@...utronix.de,
	gerhard@...leder-embedded.com,
	jdamato@...tly.com,
	Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
	Rinitha S <sx.rinitha@...el.com>
Subject: [PATCH net-next 03/13] igb: Add support for persistent NAPI config

From: Kurt Kanzenbach <kurt@...utronix.de>

Use netif_napi_add_config() to assign persistent per-NAPI config.

This is useful for preserving NAPI settings when changing queue counts or
for user space programs using SO_INCOMING_NAPI_ID.

Reviewed-by: Joe Damato <jdamato@...tly.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Tested-by: Rinitha S <sx.rinitha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Kurt Kanzenbach <kurt@...utronix.de>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 0535cc72b11b..d9205573886e 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1197,7 +1197,8 @@ static int igb_alloc_q_vector(struct igb_adapter *adapter,
 		return -ENOMEM;
 
 	/* initialize NAPI */
-	netif_napi_add(adapter->netdev, &q_vector->napi, igb_poll);
+	netif_napi_add_config(adapter->netdev, &q_vector->napi, igb_poll,
+			      v_idx);
 
 	/* tie q_vector and adapter together */
 	adapter->q_vector[v_idx] = q_vector;
-- 
2.47.1