netdev - [PATCH net-next 1/7] i40e: Store the irq number in i40e_q

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Message-Id: <20221102211011.2944983-2-anthony.l.nguyen@intel.com>
Date:   Wed,  2 Nov 2022 14:10:05 -0700
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Joe Damato <jdamato@...tly.com>, netdev@...r.kernel.org,
        anthony.l.nguyen@...el.com,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Sridhar Samudrala <sridhar.samudrala@...el.com>,
        Gurucharan <gurucharanx.g@...el.com>
Subject: [PATCH net-next 1/7] i40e: Store the irq number in i40e_q_vector

From: Joe Damato <jdamato@...tly.com>

Make it easy to figure out the IRQ number for a particular i40e_q_vector by
storing the assigned IRQ in the structure itself.

Signed-off-by: Joe Damato <jdamato@...tly.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Acked-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
Tested-by: Gurucharan <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e.h      | 1 +
 drivers/net/ethernet/intel/i40e/i40e_main.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 9a60d6b207f7..60e351665c70 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -992,6 +992,7 @@ struct i40e_q_vector {
 	struct rcu_head rcu;	/* to avoid race with update stats on free */
 	char name[I40E_INT_NAME_STR_LEN];
 	bool arm_wb_state;
+	int irq_num;		/* IRQ assigned to this q_vector */
 } ____cacheline_internodealigned_in_smp;
 
 /* lan device */
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 1a1fab94205d..4880b740fa6e 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -4123,6 +4123,7 @@ static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
 		}
 
 		/* register for affinity change notifications */
+		q_vector->irq_num = irq_num;
 		q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
 		q_vector->affinity_notify.release = i40e_irq_affinity_release;
 		irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
-- 
2.35.1