netdev - [PATCH net-next 06/15] netdevsim: Add support for setting of packet trap group parameters

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Message-Id: <20200324193250.1322038-7-idosch@idosch.org>
Date:   Tue, 24 Mar 2020 21:32:41 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, jiri@...lanox.com, kuba@...nel.org,
        andrew@...n.ch, f.fainelli@...il.com, vivien.didelot@...il.com,
        roopa@...ulusnetworks.com, nikolay@...ulusnetworks.com,
        mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net-next 06/15] netdevsim: Add support for setting of packet trap group parameters

From: Ido Schimmel <idosch@...lanox.com>

Add a dummy callback to set trap group parameters. Return an error when
the 'fail_trap_group_set' debugfs file is set in order to exercise error
paths and verify that error is propagated to user space when should.

Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...lanox.com>
---
 drivers/net/netdevsim/dev.c       | 17 +++++++++++++++++
 drivers/net/netdevsim/netdevsim.h |  1 +
 2 files changed, 18 insertions(+)

diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index c344d0f727c7..5349a7216f15 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -192,6 +192,9 @@ static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
 			    &nsim_dev->fail_reload);
 	debugfs_create_file("trap_flow_action_cookie", 0600, nsim_dev->ddir,
 			    nsim_dev, &nsim_dev_trap_fa_cookie_fops);
+	debugfs_create_bool("fail_trap_group_set", 0600,
+			    nsim_dev->ddir,
+			    &nsim_dev->fail_trap_group_set);
 	debugfs_create_bool("fail_trap_policer_counter_get", 0600,
 			    nsim_dev->ddir,
 			    &nsim_dev->fail_trap_policer_counter_get);
@@ -769,6 +772,19 @@ nsim_dev_devlink_trap_action_set(struct devlink *devlink,
 	return 0;
 }
 
+static int
+nsim_dev_devlink_trap_group_set(struct devlink *devlink,
+				const struct devlink_trap_group *group,
+				const struct devlink_trap_policer *policer)
+{
+	struct nsim_dev *nsim_dev = devlink_priv(devlink);
+
+	if (nsim_dev->fail_trap_group_set)
+		return -EINVAL;
+
+	return 0;
+}
+
 #define NSIM_DEV_TRAP_POLICER_MIN_RATE	1
 #define NSIM_DEV_TRAP_POLICER_MAX_RATE	8000
 #define NSIM_DEV_TRAP_POLICER_MIN_BURST	8
@@ -836,6 +852,7 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
 	.flash_update = nsim_dev_flash_update,
 	.trap_init = nsim_dev_devlink_trap_init,
 	.trap_action_set = nsim_dev_devlink_trap_action_set,
+	.trap_group_set = nsim_dev_devlink_trap_group_set,
 	.trap_policer_set = nsim_dev_devlink_trap_policer_set,
 	.trap_policer_counter_get = nsim_dev_devlink_trap_policer_counter_get,
 };
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 68788dae5625..f78d8adee014 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -180,6 +180,7 @@ struct nsim_dev {
 	struct nsim_dev_health health;
 	struct flow_action_cookie *fa_cookie;
 	spinlock_t fa_cookie_lock; /* protects fa_cookie */
+	bool fail_trap_group_set;
 	bool fail_trap_policer_counter_get;
 };
 
-- 
2.24.1