diff mbox series

[v5,net-next,04/15] net: bridge: mst: Notify switchdev drivers of MST mode changes

Message ID 20220316150857.2442916-5-tobias@waldekranz.com (mailing list archive)
State Accepted
Commit 87c167bb94ee3fd49569d4aa2038b9b8840d906f
Delegated to: Netdev Maintainers
Headers show
Series net: bridge: Multiple Spanning Trees | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 49 this patch: 49
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 24 this patch: 24
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 68 this patch: 68
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 45 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Tobias Waldekranz March 16, 2022, 3:08 p.m. UTC
Trigger a switchdev event whenever the bridge's MST mode is
enabled/disabled. This allows constituent ports to either perform any
required hardware config, or refuse the change if it not supported.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 include/net/switchdev.h |  2 ++
 net/bridge/br_mst.c     | 11 +++++++++++
 2 files changed, 13 insertions(+)

Comments

Nikolay Aleksandrov March 17, 2022, 8:56 a.m. UTC | #1
On 16/03/2022 17:08, Tobias Waldekranz wrote:
> Trigger a switchdev event whenever the bridge's MST mode is
> enabled/disabled. This allows constituent ports to either perform any
> required hardware config, or refuse the change if it not supported.
> 
> Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
> ---
>  include/net/switchdev.h |  2 ++
>  net/bridge/br_mst.c     | 11 +++++++++++
>  2 files changed, 13 insertions(+)
> 

Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
diff mbox series

Patch

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 3e424d40fae3..85dd004dc9ad 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -27,6 +27,7 @@  enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
 	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
 	SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+	SWITCHDEV_ATTR_ID_BRIDGE_MST,
 	SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
 };
 
@@ -48,6 +49,7 @@  struct switchdev_attr {
 		clock_t ageing_time;			/* BRIDGE_AGEING_TIME */
 		bool vlan_filtering;			/* BRIDGE_VLAN_FILTERING */
 		u16 vlan_protocol;			/* BRIDGE_VLAN_PROTOCOL */
+		bool mst;				/* BRIDGE_MST */
 		bool mc_disabled;			/* MC_DISABLED */
 		u8 mrp_port_role;			/* MRP_PORT_ROLE */
 	} u;
diff --git a/net/bridge/br_mst.c b/net/bridge/br_mst.c
index 5c1831c73fc2..43ca6b97c5c3 100644
--- a/net/bridge/br_mst.c
+++ b/net/bridge/br_mst.c
@@ -7,6 +7,7 @@ 
  */
 
 #include <linux/kernel.h>
+#include <net/switchdev.h>
 
 #include "br_private.h"
 
@@ -102,8 +103,14 @@  void br_mst_vlan_init_state(struct net_bridge_vlan *v)
 int br_mst_set_enabled(struct net_bridge *br, bool on,
 		       struct netlink_ext_ack *extack)
 {
+	struct switchdev_attr attr = {
+		.id = SWITCHDEV_ATTR_ID_BRIDGE_MST,
+		.orig_dev = br->dev,
+		.u.mst = on,
+	};
 	struct net_bridge_vlan_group *vg;
 	struct net_bridge_port *p;
+	int err;
 
 	list_for_each_entry(p, &br->port_list, list) {
 		vg = nbp_vlan_group(p);
@@ -119,6 +126,10 @@  int br_mst_set_enabled(struct net_bridge *br, bool on,
 	if (br_opt_get(br, BROPT_MST_ENABLED) == on)
 		return 0;
 
+	err = switchdev_port_attr_set(br->dev, &attr, extack);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
 	if (on)
 		static_branch_enable(&br_mst_used);
 	else