[PATCH net-next 0/6] mlxsw: Misc devlink changes

[PATCH net-next 0/6] mlxsw: Misc devlink changes

[Petr Machata]

This patchset adjusts mlxsw to recent devlink changes in net-next.

Patch #1 removes a devl_param_driverinit_value_set() call that was
unnecessary, but now additionally triggers a WARN_ON.

Patches #2-#4 are non-functional preparations for the following patches.

Patch #5 fixes a use-after-free that is triggered while changing network
namespaces.

Patch #6 makes mlxsw consistent with netdevsim by having mlxsw register
its devlink instance before its sub-objects. It helps us avoid a warning
described in the commit message.

Danielle Ratson (1):
  mlxsw: spectrum: Remove pointless call to
    devlink_param_driverinit_value_set()

Ido Schimmel (5):
  mlxsw: spectrum_acl_tcam: Add missing mutex_destroy()
  mlxsw: spectrum_acl_tcam: Make fini symmetric to init
  mlxsw: spectrum_acl_tcam: Reorder functions to avoid forward
    declarations
  mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code
  mlxsw: core: Register devlink instance before sub-objects

 drivers/net/ethernet/mellanox/mlxsw/core.c    |  31 +--
 drivers/net/ethernet/mellanox/mlxsw/core.h    |   2 -
 .../net/ethernet/mellanox/mlxsw/spectrum.c    |  62 -----
 .../net/ethernet/mellanox/mlxsw/spectrum.h    |   3 +-
 .../ethernet/mellanox/mlxsw/spectrum_acl.c    |  21 +-
 .../mellanox/mlxsw/spectrum_acl_tcam.c        | 244 +++++++++++-------
 .../mellanox/mlxsw/spectrum_acl_tcam.h        |   5 -
 7 files changed, 161 insertions(+), 207 deletions(-)

-- 
2.39.0

[PATCH net-next 1/6] mlxsw: spectrum: Remove pointless call to devlink_param_driverinit_value_set()

[Petr Machata]

From: Danielle Ratson <danieller@nvidia.com>

The "acl_region_rehash_interval" devlink parameter is a "runtime"
parameter, making the call to devl_param_driverinit_value_set()
pointless. Before cited commit the function simply returned an error
(that was not checked), but now it emits a WARNING [1].

Fix by removing the function call.

[1]
WARNING: CPU: 0 PID: 7 at net/devlink/leftover.c:10974
devl_param_driverinit_value_set+0x8c/0x90
[...]
Call Trace:
 <TASK>
 mlxsw_sp2_params_register+0x83/0xb0 [mlxsw_spectrum]
 __mlxsw_core_bus_device_register+0x5e5/0x990 [mlxsw_core]
 mlxsw_core_bus_device_register+0x42/0x60 [mlxsw_core]
 mlxsw_pci_probe+0x1f0/0x230 [mlxsw_pci]
 local_pci_probe+0x1a/0x40
 work_for_cpu_fn+0xf/0x20
 process_one_work+0x1db/0x390
 worker_thread+0x1d5/0x3b0
 kthread+0xe5/0x110
 ret_from_fork+0x1f/0x30
 </TASK>

Fixes: 85fe0b324c83 ("devlink: make devlink_param_driverinit_value_set() return void")
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index b0bdb9640ebf..b150e97b97b7 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3895,19 +3895,9 @@ static const struct devlink_param mlxsw_sp2_devlink_params[] = {
 static int mlxsw_sp2_params_register(struct mlxsw_core *mlxsw_core)
 {
 	struct devlink *devlink = priv_to_devlink(mlxsw_core);
-	union devlink_param_value value;
-	int err;
 
-	err = devl_params_register(devlink, mlxsw_sp2_devlink_params,
-				   ARRAY_SIZE(mlxsw_sp2_devlink_params));
-	if (err)
-		return err;
-
-	value.vu32 = 0;
-	devl_param_driverinit_value_set(devlink,
-					MLXSW_DEVLINK_PARAM_ID_ACL_REGION_REHASH_INTERVAL,
-					value);
-	return 0;
+	return devl_params_register(devlink, mlxsw_sp2_devlink_params,
+				    ARRAY_SIZE(mlxsw_sp2_devlink_params));
 }
 
 static void mlxsw_sp2_params_unregister(struct mlxsw_core *mlxsw_core)
-- 
2.39.0

Re: [PATCH net-next 1/6] mlxsw: spectrum: Remove pointless call to devlink_param_driverinit_value_set()

[Jiri Pirko]

Mon, Feb 06, 2023 at 04:39:18PM CET, petrm@nvidia.com wrote:
>From: Danielle Ratson <danieller@nvidia.com>
>
>The "acl_region_rehash_interval" devlink parameter is a "runtime"
>parameter, making the call to devl_param_driverinit_value_set()
>pointless. Before cited commit the function simply returned an error
>(that was not checked), but now it emits a WARNING [1].
>
>Fix by removing the function call.
>
>[1]
>WARNING: CPU: 0 PID: 7 at net/devlink/leftover.c:10974
>devl_param_driverinit_value_set+0x8c/0x90
>[...]
>Call Trace:
> <TASK>
> mlxsw_sp2_params_register+0x83/0xb0 [mlxsw_spectrum]
> __mlxsw_core_bus_device_register+0x5e5/0x990 [mlxsw_core]
> mlxsw_core_bus_device_register+0x42/0x60 [mlxsw_core]
> mlxsw_pci_probe+0x1f0/0x230 [mlxsw_pci]
> local_pci_probe+0x1a/0x40
> work_for_cpu_fn+0xf/0x20
> process_one_work+0x1db/0x390
> worker_thread+0x1d5/0x3b0
> kthread+0xe5/0x110
> ret_from_fork+0x1f/0x30
> </TASK>
>
>Fixes: 85fe0b324c83 ("devlink: make devlink_param_driverinit_value_set() return void")
>Signed-off-by: Danielle Ratson <danieller@nvidia.com>
>Reviewed-by: Ido Schimmel <idosch@nvidia.com>

Reviewed-by: Jiri Pirko <jiri@nvidia.com>

>Signed-off-by: Petr Machata <petrm@nvidia.com>

[PATCH net-next 2/6] mlxsw: spectrum_acl_tcam: Add missing mutex_destroy()

[Petr Machata]

From: Ido Schimmel <idosch@nvidia.com>

Pair mutex_init() with a mutex_destroy() in the error path. Found during
code review. No functional changes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 3b9ba8fa247a..7cbfd34d02de 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -52,8 +52,10 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 		max_regions = max_tcam_regions;
 
 	tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
-	if (!tcam->used_regions)
-		return -ENOMEM;
+	if (!tcam->used_regions) {
+		err = -ENOMEM;
+		goto err_alloc_used_regions;
+	}
 	tcam->max_regions = max_regions;
 
 	max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
@@ -76,6 +78,8 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 	bitmap_free(tcam->used_groups);
 err_alloc_used_groups:
 	bitmap_free(tcam->used_regions);
+err_alloc_used_regions:
+	mutex_destroy(&tcam->lock);
 	return err;
 }
 
-- 
2.39.0

[PATCH net-next 3/6] mlxsw: spectrum_acl_tcam: Make fini symmetric to init

[Petr Machata]

From: Ido Schimmel <idosch@nvidia.com>

Move mutex_destroy() to the end to make the function symmetric with
mlxsw_sp_acl_tcam_init(). No functional changes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 7cbfd34d02de..2445957355cd 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -88,10 +88,10 @@ void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
 {
 	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
 
-	mutex_destroy(&tcam->lock);
 	ops->fini(mlxsw_sp, tcam->priv);
 	bitmap_free(tcam->used_groups);
 	bitmap_free(tcam->used_regions);
+	mutex_destroy(&tcam->lock);
 }
 
 int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
-- 
2.39.0

[PATCH net-next 4/6] mlxsw: spectrum_acl_tcam: Reorder functions to avoid forward declarations

[Petr Machata]

From: Ido Schimmel <idosch@nvidia.com>

Move the initialization and de-initialization code further below in
order to avoid forward declarations in the next patch. No functional
changes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 .../mellanox/mlxsw/spectrum_acl_tcam.c        | 130 +++++++++---------
 1 file changed, 65 insertions(+), 65 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 2445957355cd..dbc2f834f859 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -29,71 +29,6 @@ size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp)
 #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN 3000 /* ms */
 #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS 100 /* number of entries */
 
-int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
-			   struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	u64 max_tcam_regions;
-	u64 max_regions;
-	u64 max_groups;
-	int err;
-
-	mutex_init(&tcam->lock);
-	tcam->vregion_rehash_intrvl =
-			MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
-	INIT_LIST_HEAD(&tcam->vregion_list);
-
-	max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
-					      ACL_MAX_TCAM_REGIONS);
-	max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
-
-	/* Use 1:1 mapping between ACL region and TCAM region */
-	if (max_tcam_regions < max_regions)
-		max_regions = max_tcam_regions;
-
-	tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
-	if (!tcam->used_regions) {
-		err = -ENOMEM;
-		goto err_alloc_used_regions;
-	}
-	tcam->max_regions = max_regions;
-
-	max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
-	tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL);
-	if (!tcam->used_groups) {
-		err = -ENOMEM;
-		goto err_alloc_used_groups;
-	}
-	tcam->max_groups = max_groups;
-	tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
-						 ACL_MAX_GROUP_SIZE);
-
-	err = ops->init(mlxsw_sp, tcam->priv, tcam);
-	if (err)
-		goto err_tcam_init;
-
-	return 0;
-
-err_tcam_init:
-	bitmap_free(tcam->used_groups);
-err_alloc_used_groups:
-	bitmap_free(tcam->used_regions);
-err_alloc_used_regions:
-	mutex_destroy(&tcam->lock);
-	return err;
-}
-
-void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
-			    struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-
-	ops->fini(mlxsw_sp, tcam->priv);
-	bitmap_free(tcam->used_groups);
-	bitmap_free(tcam->used_regions);
-	mutex_destroy(&tcam->lock);
-}
-
 int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_acl_rule_info *rulei,
 				   u32 *priority, bool fillup_priority)
@@ -1546,6 +1481,71 @@ mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp,
 		mlxsw_sp_acl_tcam_vregion_rehash_end(mlxsw_sp, vregion, ctx);
 }
 
+int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
+			   struct mlxsw_sp_acl_tcam *tcam)
+{
+	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
+	u64 max_tcam_regions;
+	u64 max_regions;
+	u64 max_groups;
+	int err;
+
+	mutex_init(&tcam->lock);
+	tcam->vregion_rehash_intrvl =
+			MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
+	INIT_LIST_HEAD(&tcam->vregion_list);
+
+	max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
+					      ACL_MAX_TCAM_REGIONS);
+	max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
+
+	/* Use 1:1 mapping between ACL region and TCAM region */
+	if (max_tcam_regions < max_regions)
+		max_regions = max_tcam_regions;
+
+	tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
+	if (!tcam->used_regions) {
+		err = -ENOMEM;
+		goto err_alloc_used_regions;
+	}
+	tcam->max_regions = max_regions;
+
+	max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
+	tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL);
+	if (!tcam->used_groups) {
+		err = -ENOMEM;
+		goto err_alloc_used_groups;
+	}
+	tcam->max_groups = max_groups;
+	tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
+						  ACL_MAX_GROUP_SIZE);
+
+	err = ops->init(mlxsw_sp, tcam->priv, tcam);
+	if (err)
+		goto err_tcam_init;
+
+	return 0;
+
+err_tcam_init:
+	bitmap_free(tcam->used_groups);
+err_alloc_used_groups:
+	bitmap_free(tcam->used_regions);
+err_alloc_used_regions:
+	mutex_destroy(&tcam->lock);
+	return err;
+}
+
+void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
+			    struct mlxsw_sp_acl_tcam *tcam)
+{
+	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
+
+	ops->fini(mlxsw_sp, tcam->priv);
+	bitmap_free(tcam->used_groups);
+	bitmap_free(tcam->used_regions);
+	mutex_destroy(&tcam->lock);
+}
+
 static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = {
 	MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
 	MLXSW_AFK_ELEMENT_DMAC_32_47,
-- 
2.39.0

[PATCH net-next 5/6] mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code

[Petr Machata]

From: Ido Schimmel <idosch@nvidia.com>

Cited commit added 'DEVLINK_CMD_PARAM_DEL' notifications whenever the
network namespace of the devlink instance is changed. Specifically, the
notifications are generated after calling reload_down(), but before
calling reload_up(). At this stage, the data structures accessed while
reading the value of the "acl_region_rehash_interval" devlink parameter
are uninitialized, resulting in a use-after-free [1].

Fix by moving the registration and unregistration of the devlink
parameter to the TCAM code where it is actually used. This means that
the parameter is unregistered during reload_down() and then
re-registered during reload_up(), avoiding the use-after-free between
these two operations.

Reproducer:

 # ip netns add test123
 # devlink dev reload pci/0000:06:00.0 netns test123

[1]
BUG: KASAN: use-after-free in mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get+0xb2/0xd0
Read of size 4 at addr ffff888162fd37d8 by task devlink/1323
[...]
Call Trace:
 <TASK>
 dump_stack_lvl+0x95/0xbd
 print_report+0x181/0x4a1
 kasan_report+0xdb/0x200
 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get+0xb2/0xd0
 mlxsw_sp_params_acl_region_rehash_intrvl_get+0x32/0x80
 devlink_nl_param_fill.constprop.0+0x29a/0x11e0
 devlink_param_notify.constprop.0+0xb9/0x250
 devlink_notify_unregister+0xbc/0x470
 devlink_reload+0x1aa/0x440
 devlink_nl_cmd_reload+0x559/0x11b0
 genl_family_rcv_msg_doit.isra.0+0x1f8/0x2e0
 genl_rcv_msg+0x558/0x7f0
 netlink_rcv_skb+0x170/0x440
 genl_rcv+0x2d/0x40
 netlink_unicast+0x53f/0x810
 netlink_sendmsg+0x961/0xe80
 __sys_sendto+0x2a4/0x420
 __x64_sys_sendto+0xe5/0x1c0
 do_syscall_64+0x38/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Fixes: 7d7e9169a3ec ("devlink: move devlink reload notifications back in between _down() and _up() calls")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c    |  19 +--
 drivers/net/ethernet/mellanox/mlxsw/core.h    |   2 -
 .../net/ethernet/mellanox/mlxsw/spectrum.c    |  52 --------
 .../net/ethernet/mellanox/mlxsw/spectrum.h    |   3 +-
 .../ethernet/mellanox/mlxsw/spectrum_acl.c    |  21 +---
 .../mellanox/mlxsw/spectrum_acl_tcam.c        | 118 ++++++++++++------
 .../mellanox/mlxsw/spectrum_acl_tcam.h        |   5 -
 7 files changed, 90 insertions(+), 130 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 42422a106433..a08aec243ad6 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -1750,29 +1750,12 @@ static const struct devlink_ops mlxsw_devlink_ops = {
 
 static int mlxsw_core_params_register(struct mlxsw_core *mlxsw_core)
 {
-	int err;
-
-	err = mlxsw_core_fw_params_register(mlxsw_core);
-	if (err)
-		return err;
-
-	if (mlxsw_core->driver->params_register) {
-		err = mlxsw_core->driver->params_register(mlxsw_core);
-		if (err)
-			goto err_params_register;
-	}
-	return 0;
-
-err_params_register:
-	mlxsw_core_fw_params_unregister(mlxsw_core);
-	return err;
+	return mlxsw_core_fw_params_register(mlxsw_core);
 }
 
 static void mlxsw_core_params_unregister(struct mlxsw_core *mlxsw_core)
 {
 	mlxsw_core_fw_params_unregister(mlxsw_core);
-	if (mlxsw_core->driver->params_register)
-		mlxsw_core->driver->params_unregister(mlxsw_core);
 }
 
 struct mlxsw_core_health_event {
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index a77cb0be7108..e5474d3e34db 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -421,8 +421,6 @@ struct mlxsw_driver {
 			     const struct mlxsw_config_profile *profile,
 			     u64 *p_single_size, u64 *p_double_size,
 			     u64 *p_linear_size);
-	int (*params_register)(struct mlxsw_core *mlxsw_core);
-	void (*params_unregister)(struct mlxsw_core *mlxsw_core);
 
 	/* Notify a driver that a timestamped packet was transmitted. Driver
 	 * is responsible for freeing the passed-in SKB.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index b150e97b97b7..a8f94b7544ee 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3861,52 +3861,6 @@ static int mlxsw_sp_kvd_sizes_get(struct mlxsw_core *mlxsw_core,
 	return 0;
 }
 
-static int
-mlxsw_sp_params_acl_region_rehash_intrvl_get(struct devlink *devlink, u32 id,
-					     struct devlink_param_gset_ctx *ctx)
-{
-	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
-	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
-
-	ctx->val.vu32 = mlxsw_sp_acl_region_rehash_intrvl_get(mlxsw_sp);
-	return 0;
-}
-
-static int
-mlxsw_sp_params_acl_region_rehash_intrvl_set(struct devlink *devlink, u32 id,
-					     struct devlink_param_gset_ctx *ctx)
-{
-	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
-	struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
-
-	return mlxsw_sp_acl_region_rehash_intrvl_set(mlxsw_sp, ctx->val.vu32);
-}
-
-static const struct devlink_param mlxsw_sp2_devlink_params[] = {
-	DEVLINK_PARAM_DRIVER(MLXSW_DEVLINK_PARAM_ID_ACL_REGION_REHASH_INTERVAL,
-			     "acl_region_rehash_interval",
-			     DEVLINK_PARAM_TYPE_U32,
-			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
-			     mlxsw_sp_params_acl_region_rehash_intrvl_get,
-			     mlxsw_sp_params_acl_region_rehash_intrvl_set,
-			     NULL),
-};
-
-static int mlxsw_sp2_params_register(struct mlxsw_core *mlxsw_core)
-{
-	struct devlink *devlink = priv_to_devlink(mlxsw_core);
-
-	return devl_params_register(devlink, mlxsw_sp2_devlink_params,
-				    ARRAY_SIZE(mlxsw_sp2_devlink_params));
-}
-
-static void mlxsw_sp2_params_unregister(struct mlxsw_core *mlxsw_core)
-{
-	devl_params_unregister(priv_to_devlink(mlxsw_core),
-			       mlxsw_sp2_devlink_params,
-			       ARRAY_SIZE(mlxsw_sp2_devlink_params));
-}
-
 static void mlxsw_sp_ptp_transmitted(struct mlxsw_core *mlxsw_core,
 				     struct sk_buff *skb, u16 local_port)
 {
@@ -3984,8 +3938,6 @@ static struct mlxsw_driver mlxsw_sp2_driver = {
 	.trap_policer_counter_get	= mlxsw_sp_trap_policer_counter_get,
 	.txhdr_construct		= mlxsw_sp_txhdr_construct,
 	.resources_register		= mlxsw_sp2_resources_register,
-	.params_register		= mlxsw_sp2_params_register,
-	.params_unregister		= mlxsw_sp2_params_unregister,
 	.ptp_transmitted		= mlxsw_sp_ptp_transmitted,
 	.txhdr_len			= MLXSW_TXHDR_LEN,
 	.profile			= &mlxsw_sp2_config_profile,
@@ -4023,8 +3975,6 @@ static struct mlxsw_driver mlxsw_sp3_driver = {
 	.trap_policer_counter_get	= mlxsw_sp_trap_policer_counter_get,
 	.txhdr_construct		= mlxsw_sp_txhdr_construct,
 	.resources_register		= mlxsw_sp2_resources_register,
-	.params_register		= mlxsw_sp2_params_register,
-	.params_unregister		= mlxsw_sp2_params_unregister,
 	.ptp_transmitted		= mlxsw_sp_ptp_transmitted,
 	.txhdr_len			= MLXSW_TXHDR_LEN,
 	.profile			= &mlxsw_sp2_config_profile,
@@ -4060,8 +4010,6 @@ static struct mlxsw_driver mlxsw_sp4_driver = {
 	.trap_policer_counter_get	= mlxsw_sp_trap_policer_counter_get,
 	.txhdr_construct		= mlxsw_sp_txhdr_construct,
 	.resources_register		= mlxsw_sp2_resources_register,
-	.params_register		= mlxsw_sp2_params_register,
-	.params_unregister		= mlxsw_sp2_params_unregister,
 	.ptp_transmitted		= mlxsw_sp_ptp_transmitted,
 	.txhdr_len			= MLXSW_TXHDR_LEN,
 	.profile			= &mlxsw_sp4_config_profile,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index bbc73324451d..4c22f8004514 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -973,6 +973,7 @@ enum mlxsw_sp_acl_profile {
 };
 
 struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl);
+struct mlxsw_sp_acl_tcam *mlxsw_sp_acl_to_tcam(struct mlxsw_sp_acl *acl);
 
 int mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
 			      struct mlxsw_sp_flow_block *block,
@@ -1096,8 +1097,6 @@ mlxsw_sp_acl_act_cookie_lookup(struct mlxsw_sp *mlxsw_sp, u32 cookie_index)
 
 int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp);
 void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp);
-u32 mlxsw_sp_acl_region_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp);
-int mlxsw_sp_acl_region_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp, u32 val);
 
 struct mlxsw_sp_acl_mangle_action;
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index 6c5af018546f..0423ac262d89 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -40,6 +40,11 @@ struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl)
 	return acl->afk;
 }
 
+struct mlxsw_sp_acl_tcam *mlxsw_sp_acl_to_tcam(struct mlxsw_sp_acl *acl)
+{
+	return &acl->tcam;
+}
+
 struct mlxsw_sp_acl_ruleset_ht_key {
 	struct mlxsw_sp_flow_block *block;
 	u32 chain_index;
@@ -1099,22 +1104,6 @@ void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp)
 	kfree(acl);
 }
 
-u32 mlxsw_sp_acl_region_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp)
-{
-	struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
-
-	return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(mlxsw_sp,
-							   &acl->tcam);
-}
-
-int mlxsw_sp_acl_region_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp, u32 val)
-{
-	struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
-
-	return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(mlxsw_sp,
-							   &acl->tcam, val);
-}
-
 struct mlxsw_sp_acl_rulei_ops mlxsw_sp1_acl_rulei_ops = {
 	.act_mangle_field = mlxsw_sp1_acl_rulei_act_mangle_field,
 };
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index dbc2f834f859..d50786b0a6ce 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -9,6 +9,7 @@
 #include <linux/rhashtable.h>
 #include <linux/netdevice.h>
 #include <linux/mutex.h>
+#include <net/devlink.h>
 #include <trace/events/mlxsw.h>
 
 #include "reg.h"
@@ -832,41 +833,6 @@ mlxsw_sp_acl_tcam_vregion_destroy(struct mlxsw_sp *mlxsw_sp,
 	kfree(vregion);
 }
 
-u32 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	u32 vregion_rehash_intrvl;
-
-	if (WARN_ON(!ops->region_rehash_hints_get))
-		return 0;
-	vregion_rehash_intrvl = tcam->vregion_rehash_intrvl;
-	return vregion_rehash_intrvl;
-}
-
-int mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam,
-						u32 val)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	struct mlxsw_sp_acl_tcam_vregion *vregion;
-
-	if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val)
-		return -EINVAL;
-	if (WARN_ON(!ops->region_rehash_hints_get))
-		return -EOPNOTSUPP;
-	tcam->vregion_rehash_intrvl = val;
-	mutex_lock(&tcam->lock);
-	list_for_each_entry(vregion, &tcam->vregion_list, tlist) {
-		if (val)
-			mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
-		else
-			cancel_delayed_work_sync(&vregion->rehash.dw);
-	}
-	mutex_unlock(&tcam->lock);
-	return 0;
-}
-
 static struct mlxsw_sp_acl_tcam_vregion *
 mlxsw_sp_acl_tcam_vregion_get(struct mlxsw_sp *mlxsw_sp,
 			      struct mlxsw_sp_acl_tcam_vgroup *vgroup,
@@ -1481,6 +1447,81 @@ mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp,
 		mlxsw_sp_acl_tcam_vregion_rehash_end(mlxsw_sp, vregion, ctx);
 }
 
+static int
+mlxsw_sp_acl_tcam_region_rehash_intrvl_get(struct devlink *devlink, u32 id,
+					   struct devlink_param_gset_ctx *ctx)
+{
+	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+	struct mlxsw_sp_acl_tcam *tcam;
+	struct mlxsw_sp *mlxsw_sp;
+
+	mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
+	tcam = mlxsw_sp_acl_to_tcam(mlxsw_sp->acl);
+	ctx->val.vu32 = tcam->vregion_rehash_intrvl;
+
+	return 0;
+}
+
+static int
+mlxsw_sp_acl_tcam_region_rehash_intrvl_set(struct devlink *devlink, u32 id,
+					   struct devlink_param_gset_ctx *ctx)
+{
+	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+	struct mlxsw_sp_acl_tcam_vregion *vregion;
+	struct mlxsw_sp_acl_tcam *tcam;
+	struct mlxsw_sp *mlxsw_sp;
+	u32 val = ctx->val.vu32;
+
+	if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val)
+		return -EINVAL;
+
+	mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
+	tcam = mlxsw_sp_acl_to_tcam(mlxsw_sp->acl);
+	tcam->vregion_rehash_intrvl = val;
+	mutex_lock(&tcam->lock);
+	list_for_each_entry(vregion, &tcam->vregion_list, tlist) {
+		if (val)
+			mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
+		else
+			cancel_delayed_work_sync(&vregion->rehash.dw);
+	}
+	mutex_unlock(&tcam->lock);
+	return 0;
+}
+
+static const struct devlink_param mlxsw_sp_acl_tcam_rehash_params[] = {
+	DEVLINK_PARAM_DRIVER(MLXSW_DEVLINK_PARAM_ID_ACL_REGION_REHASH_INTERVAL,
+			     "acl_region_rehash_interval",
+			     DEVLINK_PARAM_TYPE_U32,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     mlxsw_sp_acl_tcam_region_rehash_intrvl_get,
+			     mlxsw_sp_acl_tcam_region_rehash_intrvl_set,
+			     NULL),
+};
+
+static int mlxsw_sp_acl_tcam_rehash_params_register(struct mlxsw_sp *mlxsw_sp)
+{
+	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+	if (!mlxsw_sp->acl_tcam_ops->region_rehash_hints_get)
+		return 0;
+
+	return devl_params_register(devlink, mlxsw_sp_acl_tcam_rehash_params,
+				    ARRAY_SIZE(mlxsw_sp_acl_tcam_rehash_params));
+}
+
+static void
+mlxsw_sp_acl_tcam_rehash_params_unregister(struct mlxsw_sp *mlxsw_sp)
+{
+	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+	if (!mlxsw_sp->acl_tcam_ops->region_rehash_hints_get)
+		return;
+
+	devl_params_unregister(devlink, mlxsw_sp_acl_tcam_rehash_params,
+			       ARRAY_SIZE(mlxsw_sp_acl_tcam_rehash_params));
+}
+
 int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 			   struct mlxsw_sp_acl_tcam *tcam)
 {
@@ -1495,6 +1536,10 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 			MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
 	INIT_LIST_HEAD(&tcam->vregion_list);
 
+	err = mlxsw_sp_acl_tcam_rehash_params_register(mlxsw_sp);
+	if (err)
+		goto err_rehash_params_register;
+
 	max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
 					      ACL_MAX_TCAM_REGIONS);
 	max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
@@ -1531,6 +1576,8 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 err_alloc_used_groups:
 	bitmap_free(tcam->used_regions);
 err_alloc_used_regions:
+	mlxsw_sp_acl_tcam_rehash_params_unregister(mlxsw_sp);
+err_rehash_params_register:
 	mutex_destroy(&tcam->lock);
 	return err;
 }
@@ -1543,6 +1590,7 @@ void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
 	ops->fini(mlxsw_sp, tcam->priv);
 	bitmap_free(tcam->used_groups);
 	bitmap_free(tcam->used_regions);
+	mlxsw_sp_acl_tcam_rehash_params_unregister(mlxsw_sp);
 	mutex_destroy(&tcam->lock);
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h
index edbbc89e7a71..462bf448497d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h
@@ -29,11 +29,6 @@ int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 			   struct mlxsw_sp_acl_tcam *tcam);
 void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
 			    struct mlxsw_sp_acl_tcam *tcam);
-u32 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam);
-int mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam,
-						u32 val);
 int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_acl_rule_info *rulei,
 				   u32 *priority, bool fillup_priority);
-- 
2.39.0

[PATCH net-next 6/6] mlxsw: core: Register devlink instance before sub-objects

[Petr Machata]

From: Ido Schimmel <idosch@nvidia.com>

Recent changes made it possible to register the devlink instance before
its sub-objects and under the instance lock. Among other things, it
allows us to avoid warnings such as this one [1]. The warning is
generated because a buggy firmware is generating a health event during
driver initialization, before the devlink instance is registered.

Move the registration of the devlink instance to the beginning of the
initialization flow to avoid such problems.

A similar change was implemented in netdevsim in commit 82a3aef2e6af
("netdevsim: move devlink registration under the instance lock").

[1]
WARNING: CPU: 3 PID: 49 at net/devlink/leftover.c:7509 devlink_recover_notify.constprop.0+0xaf/0xc0
[...]
Call Trace:
 <TASK>
 devlink_health_report+0x45/0x1d0
 mlxsw_core_health_event_work+0x24/0x30 [mlxsw_core]
 process_one_work+0x1db/0x390
 worker_thread+0x49/0x3b0
 kthread+0xe5/0x110
 ret_from_fork+0x1f/0x30
 </TASK>

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index a08aec243ad6..22db0bb15c45 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -2184,6 +2184,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 			goto err_devlink_alloc;
 		}
 		devl_lock(devlink);
+		devl_register(devlink);
 	}
 
 	mlxsw_core = devlink_priv(devlink);
@@ -2267,10 +2268,8 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 			goto err_driver_init;
 	}
 
-	if (!reload) {
+	if (!reload)
 		devl_unlock(devlink);
-		devlink_register(devlink);
-	}
 	return 0;
 
 err_driver_init:
@@ -2302,6 +2301,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 err_bus_init:
 	mlxsw_core_irq_event_handler_fini(mlxsw_core);
 	if (!reload) {
+		devl_unregister(devlink);
 		devl_unlock(devlink);
 		devlink_free(devlink);
 	}
@@ -2340,10 +2340,8 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 {
 	struct devlink *devlink = priv_to_devlink(mlxsw_core);
 
-	if (!reload) {
-		devlink_unregister(devlink);
+	if (!reload)
 		devl_lock(devlink);
-	}
 
 	if (devlink_is_reload_failed(devlink)) {
 		if (!reload)
@@ -2372,6 +2370,7 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 	mlxsw_core->bus->fini(mlxsw_core->bus_priv);
 	mlxsw_core_irq_event_handler_fini(mlxsw_core);
 	if (!reload) {
+		devl_unregister(devlink);
 		devl_unlock(devlink);
 		devlink_free(devlink);
 	}
@@ -2381,6 +2380,7 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 reload_fail_deinit:
 	mlxsw_core_params_unregister(mlxsw_core);
 	devl_resources_unregister(devlink);
+	devl_unregister(devlink);
 	devl_unlock(devlink);
 	devlink_free(devlink);
 }
-- 
2.39.0

Re: [PATCH net-next 0/6] mlxsw: Misc devlink changes

[Jacob Keller]

On 2/6/2023 7:39 AM, Petr Machata wrote:
> This patchset adjusts mlxsw to recent devlink changes in net-next.
> 
> Patch #1 removes a devl_param_driverinit_value_set() call that was
> unnecessary, but now additionally triggers a WARN_ON.
> 
> Patches #2-#4 are non-functional preparations for the following patches.
> 
> Patch #5 fixes a use-after-free that is triggered while changing network
> namespaces.
> 
> Patch #6 makes mlxsw consistent with netdevsim by having mlxsw register
> its devlink instance before its sub-objects. It helps us avoid a warning
> described in the commit message.
> 

The whole series makes sense to me :)

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

> Danielle Ratson (1):
>   mlxsw: spectrum: Remove pointless call to
>     devlink_param_driverinit_value_set()
> 
> Ido Schimmel (5):
>   mlxsw: spectrum_acl_tcam: Add missing mutex_destroy()
>   mlxsw: spectrum_acl_tcam: Make fini symmetric to init
>   mlxsw: spectrum_acl_tcam: Reorder functions to avoid forward
>     declarations
>   mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code
>   mlxsw: core: Register devlink instance before sub-objects
> 
>  drivers/net/ethernet/mellanox/mlxsw/core.c    |  31 +--
>  drivers/net/ethernet/mellanox/mlxsw/core.h    |   2 -
>  .../net/ethernet/mellanox/mlxsw/spectrum.c    |  62 -----
>  .../net/ethernet/mellanox/mlxsw/spectrum.h    |   3 +-
>  .../ethernet/mellanox/mlxsw/spectrum_acl.c    |  21 +-
>  .../mellanox/mlxsw/spectrum_acl_tcam.c        | 244 +++++++++++-------
>  .../mellanox/mlxsw/spectrum_acl_tcam.h        |   5 -
>  7 files changed, 161 insertions(+), 207 deletions(-)
> 

Re: [PATCH net-next 0/6] mlxsw: Misc devlink changes

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Mon, 6 Feb 2023 16:39:17 +0100 you wrote:
> This patchset adjusts mlxsw to recent devlink changes in net-next.
> 
> Patch #1 removes a devl_param_driverinit_value_set() call that was
> unnecessary, but now additionally triggers a WARN_ON.
> 
> Patches #2-#4 are non-functional preparations for the following patches.
> 
> [...]

Here is the summary with links:
  - [net-next,1/6] mlxsw: spectrum: Remove pointless call to devlink_param_driverinit_value_set()
    https://git.kernel.org/netdev/net-next/c/8b50ac29854a
  - [net-next,2/6] mlxsw: spectrum_acl_tcam: Add missing mutex_destroy()
    https://git.kernel.org/netdev/net-next/c/65823e07b1e4
  - [net-next,3/6] mlxsw: spectrum_acl_tcam: Make fini symmetric to init
    https://git.kernel.org/netdev/net-next/c/61fe3b9102ac
  - [net-next,4/6] mlxsw: spectrum_acl_tcam: Reorder functions to avoid forward declarations
    https://git.kernel.org/netdev/net-next/c/194ab9476089
  - [net-next,5/6] mlxsw: spectrum_acl_tcam: Move devlink param to TCAM code
    https://git.kernel.org/netdev/net-next/c/74cbc3c03c82
  - [net-next,6/6] mlxsw: core: Register devlink instance before sub-objects
    https://git.kernel.org/netdev/net-next/c/9d9a90cda415

You are awesome, thank you!
-- 
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