patch 'net/iavf: check interrupt registration failure' has been queued to stable release 24.11.2

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 03/28/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/f19ad7db5cb62ce548c23a9b31d84d70ade68464

Thanks.

Kevin

---
>From f19ad7db5cb62ce548c23a9b31d84d70ade68464 Mon Sep 17 00:00:00 2001
From: Bruce Richardson <bruce.richardson at intel.com>
Date: Mon, 10 Mar 2025 13:11:15 +0000
Subject: [PATCH] net/iavf: check interrupt registration failure

[ upstream commit 12e8844f0bda3c4e4e578e180dfa0136f9285182 ]

When registering interrupts, there was no check if the registration of
the interrupt succeeded. Add in such a check, and go to fallback path
if the check fails. This prevents errors on FreeBSD due to missed
admin queue messages.

Fixes: cd3b124955d4 ("net/iavf: enable interrupt polling")

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
Acked-by: Vladimir Medvedkin <vladimir.medvedkin at intel.com>
---
 drivers/net/iavf/iavf_ethdev.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 7f80cd6258..9767f1d372 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -2826,16 +2826,14 @@ iavf_dev_init(struct rte_eth_dev *eth_dev)
 
 
-	if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) {
-		/* register callback func to eal lib */
-		rte_intr_callback_register(pci_dev->intr_handle,
-					   iavf_dev_interrupt_handler,
-					   (void *)eth_dev);
+	if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR &&
+			/* register callback func to eal lib */
+			rte_intr_callback_register(pci_dev->intr_handle,
+				   iavf_dev_interrupt_handler, (void *)eth_dev) == 0)
 
 		/* enable uio intr after callback register */
 		rte_intr_enable(pci_dev->intr_handle);
-	} else {
+	else
 		rte_eal_alarm_set(IAVF_ALARM_INTERVAL,
 				  iavf_dev_alarm_handler, eth_dev);
-	}
 
 	/* configure and enable device interrupt */
-- 
2.48.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-03-24 16:15:15.040561800 +0000
+++ 0006-net-iavf-check-interrupt-registration-failure.patch	2025-03-24 16:15:14.710735337 +0000
@@ -1 +1 @@
-From 12e8844f0bda3c4e4e578e180dfa0136f9285182 Mon Sep 17 00:00:00 2001
+From f19ad7db5cb62ce548c23a9b31d84d70ade68464 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 12e8844f0bda3c4e4e578e180dfa0136f9285182 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -17 +18 @@
- drivers/net/intel/iavf/iavf_ethdev.c | 12 +++++-------
+ drivers/net/iavf/iavf_ethdev.c | 12 +++++-------
@@ -20,4 +21,4 @@
-diff --git a/drivers/net/intel/iavf/iavf_ethdev.c b/drivers/net/intel/iavf/iavf_ethdev.c
-index 9cd2b0c867..1ab84b0bfc 100644
---- a/drivers/net/intel/iavf/iavf_ethdev.c
-+++ b/drivers/net/intel/iavf/iavf_ethdev.c
+diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
+index 7f80cd6258..9767f1d372 100644
+--- a/drivers/net/iavf/iavf_ethdev.c
++++ b/drivers/net/iavf/iavf_ethdev.c