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Message-Id: <20231228014633.3256862-2-dw@davidwei.uk>
Date: Wed, 27 Dec 2023 17:46:29 -0800
From: David Wei <dw@...idwei.uk>
To: Jakub Kicinski <kuba@...nel.org>,
Jiri Pirko <jiri@...nulli.us>,
Sabrina Dubroca <sd@...asysnail.net>,
netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next v5 1/5] netdevsim: maintain a list of probed netdevsims
In this patch I added a linked list nsim_dev_list of probed nsim_devs,
added during nsim_drv_probe() and removed during nsim_drv_remove(). A
mutex nsim_dev_list_lock protects the list.
Signed-off-by: David Wei <dw@...idwei.uk>
---
drivers/net/netdevsim/dev.c | 19 +++++++++++++++++++
drivers/net/netdevsim/netdevsim.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index b4d3b9cde8bd..8d477aa99f94 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -35,6 +35,9 @@
#include "netdevsim.h"
+static LIST_HEAD(nsim_dev_list);
+static DEFINE_MUTEX(nsim_dev_list_lock);
+
static unsigned int
nsim_dev_port_index(enum nsim_dev_port_type type, unsigned int port_index)
{
@@ -1607,6 +1610,11 @@ int nsim_drv_probe(struct nsim_bus_dev *nsim_bus_dev)
nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
devl_unlock(devlink);
+
+ mutex_lock(&nsim_dev_list_lock);
+ list_add(&nsim_dev->list, &nsim_dev_list);
+ mutex_unlock(&nsim_dev_list_lock);
+
return 0;
err_hwstats_exit:
@@ -1668,8 +1676,19 @@ void nsim_drv_remove(struct nsim_bus_dev *nsim_bus_dev)
{
struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
struct devlink *devlink = priv_to_devlink(nsim_dev);
+ struct nsim_dev *pos, *tmp;
+
+ mutex_lock(&nsim_dev_list_lock);
+ list_for_each_entry_safe(pos, tmp, &nsim_dev_list, list) {
+ if (pos == nsim_dev) {
+ list_del(&nsim_dev->list);
+ break;
+ }
+ }
+ mutex_unlock(&nsim_dev_list_lock);
devl_lock(devlink);
+
nsim_dev_reload_destroy(nsim_dev);
nsim_bpf_dev_exit(nsim_dev);
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 028c825b86db..babb61d7790b 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -277,6 +277,7 @@ struct nsim_vf_config {
struct nsim_dev {
struct nsim_bus_dev *nsim_bus_dev;
+ struct list_head list;
struct nsim_fib_data *fib_data;
struct nsim_trap_data *trap_data;
struct dentry *ddir;
--
2.39.3
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