netdev - [PATCH iproute2-next v2 11/19] bridge: vlan: add global mcast_startup_query

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Date:   Sat, 28 Aug 2021 14:07:57 +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 11/19] bridge: vlan: add global mcast_startup_query_count option

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

Add control and dump support for the global mcast_startup_query_count
option which controls the number of queries the bridge will send on the
vlan during startup phase (default 2).
Syntax:
 $ bridge vlan global set dev bridge vid 1 mcast_startup_query_count 5

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

 bridge/vlan.c     | 15 +++++++++++++++
 man/man8/bridge.8 |  8 +++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/bridge/vlan.c b/bridge/vlan.c
index 479574ca38e5..2c6ebedd2d5f 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -43,6 +43,7 @@ static void usage(void)
 		"                      [ mcast_igmp_version IGMP_VERSION ]\n"
 		"                      [ mcast_mld_version MLD_VERSION ]\n"
 		"                      [ mcast_last_member_count LAST_MEMBER_COUNT ]\n"
+		"                      [ mcast_startup_query_count STARTUP_QUERY_COUNT ]\n"
 		"       bridge vlan global { show } [ dev DEV ] [ vid VLAN_ID ]\n");
 	exit(-1);
 }
@@ -429,6 +430,14 @@ static int vlan_global_option_set(int argc, char **argv)
 			addattr32(&req.n, 1024,
 				  BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
 				  val32);
+		} else if (strcmp(*argv, "mcast_startup_query_count") == 0) {
+			NEXT_ARG();
+			if (get_u32(&val32, *argv, 0))
+				invarg("invalid mcast_startup_query_count",
+				       *argv);
+			addattr32(&req.n, 1024,
+				  BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
+				  val32);
 		} else {
 			if (matches(*argv, "help") == 0)
 				NEXT_ARG();
@@ -783,6 +792,12 @@ static void print_vlan_global_opts(struct rtattr *a, int ifindex)
 			   "mcast_last_member_count %u ",
 			   rta_getattr_u32(vattr));
 	}
+	if (vtb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) {
+		vattr = vtb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT];
+		print_uint(PRINT_ANY, "mcast_startup_query_count",
+			   "mcast_startup_query_count %u ",
+			   rta_getattr_u32(vattr));
+	}
 	print_nl();
 	close_json_object();
 }
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index cea755184336..7741382321cb 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -165,7 +165,9 @@ bridge \- show / manipulate bridge addresses and devices
 .B mcast_mld_version
 .IR MLD_VERSION " ] [ "
 .B mcast_last_member_count
-.IR LAST_MEMBER_COUNT " ]"
+.IR LAST_MEMBER_COUNT " ] [ "
+.B mcast_startup_query_count
+.IR STARTUP_QUERY_COUNT " ]"
 
 .ti -8
 .BR "bridge vlan global" " [ " show " ] [ "
@@ -951,6 +953,10 @@ set multicast last member count, ie the number of queries the bridge
 will send before stopping forwarding a multicast group after a "leave"
 message has been received. Default is 2.
 
+.TP
+.BI mcast_startup_query_count " STARTUP_QUERY_COUNT "
+set the number of queries to send during startup phase. Default is 2.
+
 .SS bridge vlan global show - list global vlan options.
 
 This command displays the global VLAN options for each VLAN entry.
-- 
2.31.1