netdev - [PATCH v3 iproute2 3/4] bridge: vlan: Add support for setting a VLANs MSTI

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Message-Id: <20240702120805.2391594-4-tobias@waldekranz.com>
Date: Tue,  2 Jul 2024 14:08:04 +0200
From: Tobias Waldekranz <tobias@...dekranz.com>
To: stephen@...workplumber.org,
	dsahern@...nel.org,
	roopa@...dia.com,
	razor@...ckwall.org,
	bridge@...ts.linux.dev,
	netdev@...r.kernel.org
Cc: liuhangbin@...il.com
Subject: [PATCH v3 iproute2 3/4] bridge: vlan: Add support for setting a VLANs MSTI

Allow the user to associate one or more VLANs with a multiple spanning
tree instance (MSTI), when MST is enabled on the bridge.

Reviewed-by: Hangbin Liu <liuhangbin@...il.com>
Acked-by: Nikolay Aleksandrov <razor@...ckwall.org>
Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
---
 bridge/vlan.c     | 13 +++++++++++++
 man/man8/bridge.8 |  9 ++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/bridge/vlan.c b/bridge/vlan.c
index 70f01aff..ea4aff93 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -53,6 +53,7 @@ static void usage(void)
 		"                      [ mcast_querier_interval QUERIER_INTERVAL ]\n"
 		"                      [ mcast_query_interval QUERY_INTERVAL ]\n"
 		"                      [ mcast_query_response_interval QUERY_RESPONSE_INTERVAL ]\n"
+		"                      [ msti MSTI ]\n"
 		"       bridge vlan global { show } [ dev DEV ] [ vid VLAN_ID ]\n");
 	exit(-1);
 }
@@ -403,6 +404,7 @@ static int vlan_global_option_set(int argc, char **argv)
 	short vid = -1;
 	__u64 val64;
 	__u32 val32;
+	__u16 val16;
 	__u8 val8;
 
 	afspec = addattr_nest(&req.n, sizeof(req),
@@ -533,6 +535,12 @@ static int vlan_global_option_set(int argc, char **argv)
 			addattr64(&req.n, 1024,
 				  BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
 				  val64);
+		} else if (strcmp(*argv, "msti") == 0) {
+			NEXT_ARG();
+			if (get_u16(&val16, *argv, 0))
+				invarg("invalid msti", *argv);
+			addattr16(&req.n, 1024,
+				 BRIDGE_VLANDB_GOPTS_MSTI, val16);
 		} else {
 			if (strcmp(*argv, "help") == 0)
 				NEXT_ARG();
@@ -942,6 +950,11 @@ static void print_vlan_global_opts(struct rtattr *a, int ifindex)
 			     "mcast_query_response_interval %llu ",
 			     rta_getattr_u64(vattr));
 	}
+	if (vtb[BRIDGE_VLANDB_GOPTS_MSTI]) {
+		vattr = vtb[BRIDGE_VLANDB_GOPTS_MSTI];
+		print_uint(PRINT_ANY, "msti", "msti %u ",
+			   rta_getattr_u16(vattr));
+	}
 	print_nl();
 	if (vtb[BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS]) {
 		vattr = RTA_DATA(vtb[BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS]);
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index bb02bd27..b4699801 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -266,7 +266,9 @@ bridge \- show / manipulate bridge addresses and devices
 .B mcast_query_interval
 .IR QUERY_INTERVAL " ] [ "
 .B mcast_query_response_interval
-.IR QUERY_RESPONSE_INTERVAL " ]"
+.IR QUERY_RESPONSE_INTERVAL " ] [ "
+.B msti
+.IR MSTI " ]"
 
 .ti -8
 .BR "bridge vlan global" " [ " show " ] [ "
@@ -1493,6 +1495,11 @@ startup phase.
 set the Max Response Time/Maximum Response Delay for IGMP/MLD
 queries sent by the bridge.
 
+.TP
+.BI msti " MSTI "
+associate the VLAN with the specified multiple spanning tree instance
+(MSTI).
+
 .SS bridge vlan global show - list global vlan options.
 
 This command displays the global VLAN options for each VLAN entry.
-- 
2.34.1