netdev - [RFC v2 iproute2-next 2/2] iplink_bridge: Add mdb_offload_fail

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Message-ID: <20250403235452.1534269-3-Joseph.Huang@garmin.com>
Date: Thu, 3 Apr 2025 19:54:52 -0400
From: Joseph Huang <Joseph.Huang@...min.com>
To: <netdev@...r.kernel.org>
CC: Joseph Huang <Joseph.Huang@...min.com>,
        Joseph Huang
	<joseph.huang.2024@...il.com>
Subject: [RFC v2 iproute2-next 2/2] iplink_bridge: Add mdb_offload_fail_notification

Add mdb_offload_fail_notification option support.

Signed-off-by: Joseph Huang <Joseph.Huang@...min.com>
---
 ip/iplink_bridge.c    | 19 +++++++++++++++++++
 man/man8/ip-link.8.in |  7 +++++++
 2 files changed, 26 insertions(+)

diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
index 1fe89551..2233e47d 100644
--- a/ip/iplink_bridge.c
+++ b/ip/iplink_bridge.c
@@ -62,6 +62,7 @@ static void print_explain(FILE *f)
 		"		  [ nf_call_iptables NF_CALL_IPTABLES ]\n"
 		"		  [ nf_call_ip6tables NF_CALL_IP6TABLES ]\n"
 		"		  [ nf_call_arptables NF_CALL_ARPTABLES ]\n"
+		"		  [ mdb_offload_fail_notification MDB_OFFLOAD_FAIL_NOTIFICATION ]\n"
 		"\n"
 		"Where: VLAN_PROTOCOL := { 802.1Q | 802.1ad }\n"
 	);
@@ -413,6 +414,18 @@ static int bridge_parse_opt(struct link_util *lu, int argc, char **argv,
 
 			addattr8(n, 1024, IFLA_BR_NF_CALL_ARPTABLES,
 				 nf_call_arpt);
+		} else if (matches(*argv, "mdb_offload_fail_notification") == 0) {
+			__u32 mofn_bit = 1 << BR_BOOLOPT_MDB_OFFLOAD_FAIL_NOTIFICATION;
+			__u8 mofn;
+
+			NEXT_ARG();
+			if (get_u8(&mofn, *argv, 0))
+				invarg("invalid mdb_offload_fail_notification", *argv);
+			bm.optmask |= 1 << BR_BOOLOPT_MDB_OFFLOAD_FAIL_NOTIFICATION;
+			if (mofn)
+				bm.optval |= mofn_bit;
+			else
+				bm.optval &= ~mofn_bit;
 		} else if (matches(*argv, "help") == 0) {
 			explain();
 			return -1;
@@ -623,6 +636,7 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 		__u32 mcvl_bit = 1 << BR_BOOLOPT_MCAST_VLAN_SNOOPING;
 		__u32 no_ll_learn_bit = 1 << BR_BOOLOPT_NO_LL_LEARN;
 		__u32 mst_bit = 1 << BR_BOOLOPT_MST_ENABLE;
+		__u32 mofn_bit = 1 << BR_BOOLOPT_MDB_OFFLOAD_FAIL_NOTIFICATION;
 		struct br_boolopt_multi *bm;
 
 		bm = RTA_DATA(tb[IFLA_BR_MULTI_BOOLOPT]);
@@ -641,6 +655,11 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 				   "mst_enabled",
 				   "mst_enabled %u ",
 				   !!(bm->optval & mst_bit));
+		if (bm->optmask & mofn_bit)
+			print_uint(PRINT_ANY,
+				   "mdb_offload_fail_notification",
+				   "mdb_offload_fail_notification %u ",
+				   !!(bm->optval & mofn_bit));
 	}
 
 	if (tb[IFLA_BR_MCAST_ROUTER])
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index efb62481..3a7d1045 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -1753,6 +1753,8 @@ the following additional arguments are supported:
 .BI nf_call_ip6tables " NF_CALL_IP6TABLES "
 ] [
 .BI nf_call_arptables " NF_CALL_ARPTABLES "
+] [
+.BI mdb_offload_fail_notification " MDB_OFFLOAD_FAIL_NOTIFICATION "
 ]
 
 .in +8
@@ -1977,6 +1979,11 @@ or disable
 .RI ( NF_CALL_ARPTABLES " == 0) "
 arptables hooks on the bridge.
 
+.BI mdb_offload_fail_notification " MDB_OFFLOAD_FAIL_NOTIFICATION "
+- turn mdb offload fail notification on
+.RI ( MDB_OFFLOAD_FAIL_NOTIFICATION " > 0) "
+or off
+.RI ( MDB_OFFLOAD_FAIL_NOTIFICATION " == 0). "
 
 .in -8
 
-- 
2.49.0