patch 'bus/vdev: fix devargs in secondary process' has been queued to stable release 23.11.1

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 04/15/24. 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://git.dpdk.org/dpdk-stable/log/?h=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=6148604a438aad21e5d74f414976666b370582c1

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 6148604a438aad21e5d74f414976666b370582c1 Mon Sep 17 00:00:00 2001
From: Mingjin Ye <mingjinx.ye at intel.com>
Date: Fri, 1 Sep 2023 07:24:09 +0000
Subject: [PATCH] bus/vdev: fix devargs in secondary process
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 6666628362c94a0b567a39a0177539c12c97d999 ]

When a device is created by a secondary process, an empty devargs is
temporarily generated and bound to it. This causes the device to not
be associated with the correct devargs, and the empty devargs are not
released when the resource is freed.

This patch fixes the issue by matching the devargs when inserting a
device in secondary process.

Fixes: dda987315ca2 ("vdev: make virtual bus use its device struct")
Fixes: a16040453968 ("eal: extract vdev infra")

Signed-off-by: Mingjin Ye <mingjinx.ye at intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
 drivers/bus/vdev/vdev.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/vdev/vdev.c b/drivers/bus/vdev/vdev.c
index 05582f1727..14cf856237 100644
--- a/drivers/bus/vdev/vdev.c
+++ b/drivers/bus/vdev/vdev.c
@@ -263,6 +263,22 @@ alloc_devargs(const char *name, const char *args)
 	return devargs;
 }
 
+static struct rte_devargs *
+vdev_devargs_lookup(const char *name)
+{
+	struct rte_devargs *devargs;
+	char dev_name[32];
+
+	RTE_EAL_DEVARGS_FOREACH("vdev", devargs) {
+		devargs->bus->parse(devargs->name, &dev_name);
+		if (strcmp(dev_name, name) == 0) {
+			VDEV_LOG(INFO, "devargs matched %s", dev_name);
+			return devargs;
+		}
+	}
+	return NULL;
+}
+
 static int
 insert_vdev(const char *name, const char *args,
 		struct rte_vdev_device **p_dev,
@@ -275,7 +291,11 @@ insert_vdev(const char *name, const char *args,
 	if (name == NULL)
 		return -EINVAL;
 
-	devargs = alloc_devargs(name, args);
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+		devargs = alloc_devargs(name, args);
+	else
+		devargs = vdev_devargs_lookup(name);
+
 	if (!devargs)
 		return -ENOMEM;
 
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-04-13 20:43:07.025817983 +0800
+++ 0064-bus-vdev-fix-devargs-in-secondary-process.patch	2024-04-13 20:43:05.017753905 +0800
@@ -1 +1 @@
-From 6666628362c94a0b567a39a0177539c12c97d999 Mon Sep 17 00:00:00 2001
+From 6148604a438aad21e5d74f414976666b370582c1 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 6666628362c94a0b567a39a0177539c12c97d999 ]
@@ -16 +18,0 @@
-Cc: stable at dpdk.org