netdev - [PATCH iproute2-next v2 18/19] bridge: vlan: add global mcast

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Date:   Sat, 28 Aug 2021 14:08:04 +0300
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     netdev@...r.kernel.org
Cc:     roopa@...dia.com, dsahern@...il.com, stephen@...workplumber.org,
        Joachim Wiberg <troglobit@...il.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>
Subject: [PATCH iproute2-next v2 18/19] bridge: vlan: add global mcast_querier option

From: Nikolay Aleksandrov <nikolay@...dia.com>

Add control and dump support for the global mcast_querier option which
controls if the bridge will act as a multicast querier for that vlan.
Syntax: $ bridge vlan global set dev bridge vid 1 mcast_querier 1

Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
---
v2: adjust help msg alignment to fit in 100 columns

 bridge/vlan.c     | 12 ++++++++++++
 man/man8/bridge.8 | 10 ++++++++++
 2 files changed, 22 insertions(+)

diff --git a/bridge/vlan.c b/bridge/vlan.c
index e8043f8574fd..afb5186d36de 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -40,6 +40,7 @@ static void usage(void)
 		"       bridge vlan { tunnelshow } [ dev DEV ] [ vid VLAN_ID ]\n"
 		"       bridge vlan global { set } vid VLAN_ID dev DEV\n"
 		"                      [ mcast_snooping MULTICAST_SNOOPING ]\n"
+		"                      [ mcast_querier MULTICAST_QUERIER ]\n"
 		"                      [ mcast_igmp_version IGMP_VERSION ]\n"
 		"                      [ mcast_mld_version MLD_VERSION ]\n"
 		"                      [ mcast_last_member_count LAST_MEMBER_COUNT ]\n"
@@ -418,6 +419,12 @@ static int vlan_global_option_set(int argc, char **argv)
 				invarg("invalid mcast_snooping", *argv);
 			addattr8(&req.n, 1024,
 				 BRIDGE_VLANDB_GOPTS_MCAST_SNOOPING, val8);
+		} else if (strcmp(*argv, "mcast_querier") == 0) {
+			NEXT_ARG();
+			if (get_u8(&val8, *argv, 0))
+				invarg("invalid mcast_querier", *argv);
+			addattr8(&req.n, 1024,
+				 BRIDGE_VLANDB_GOPTS_MCAST_QUERIER, val8);
 		} else if (strcmp(*argv, "mcast_igmp_version") == 0) {
 			NEXT_ARG();
 			if (get_u8(&val8, *argv, 0))
@@ -831,6 +838,11 @@ static void print_vlan_global_opts(struct rtattr *a, int ifindex)
 		print_uint(PRINT_ANY, "mcast_snooping", "mcast_snooping %u ",
 			   rta_getattr_u8(vattr));
 	}
+	if (vtb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER]) {
+		vattr = vtb[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER];
+		print_uint(PRINT_ANY, "mcast_querier", "mcast_querier %u ",
+			   rta_getattr_u8(vattr));
+	}
 	if (vtb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]) {
 		vattr = vtb[BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION];
 		print_uint(PRINT_ANY, "mcast_igmp_version",
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index eeceb309d219..76d2fa09d5bc 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -160,6 +160,8 @@ bridge \- show / manipulate bridge addresses and devices
 .IR VID " [ "
 .B mcast_snooping
 .IR MULTICAST_SNOOPING " ] [ "
+.B mcast_querier
+.IR MULTICAST_QUERIER " ] [ "
 .B mcast_igmp_version
 .IR IGMP_VERSION " ] [ "
 .B mcast_mld_version
@@ -951,6 +953,14 @@ turn multicast snooping for VLAN entry with VLAN ID on
 or off
 .RI ( MULTICAST_SNOOPING " == 0). Default is on. "
 
+.TP
+.BI mcast_querier " MULTICAST_QUERIER "
+enable
+.RI ( MULTICAST_QUERIER " > 0) "
+or disable
+.RI ( MULTICAST_QUERIER " == 0) "
+IGMP/MLD querier, ie sending of multicast queries by the bridge. Default is disabled.
+
 .TP
 .BI mcast_igmp_version " IGMP_VERSION "
 set the IGMP version. Default is 2.
-- 
2.31.1