From: Nikolay Aleksandrov <[email protected]>

Add support to change and retrieve global vlan multicast startup query
count option.

Signed-off-by: Nikolay Aleksandrov <[email protected]>
---
 include/uapi/linux/if_bridge.h |  1 +
 net/bridge/br_private.h        |  2 ++
 net/bridge/br_vlan_options.c   | 13 ++++++++++++-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index 68099c6bc186..62d30153e343 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -552,6 +552,7 @@ enum {
        BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION,
        BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION,
        BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
+       BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
        __BRIDGE_VLANDB_GOPTS_MAX
 };
 #define BRIDGE_VLANDB_GOPTS_MAX (__BRIDGE_VLANDB_GOPTS_MAX - 1)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index ca88609c51b7..560c57dd33db 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -1189,6 +1189,8 @@ br_multicast_ctx_options_equal(const struct 
net_bridge_mcast *brmctx1,
               brmctx2->multicast_igmp_version &&
               brmctx1->multicast_last_member_count ==
               brmctx2->multicast_last_member_count &&
+              brmctx1->multicast_startup_query_count ==
+              brmctx2->multicast_startup_query_count &&
 #if IS_ENABLED(CONFIG_IPV6)
               brmctx1->multicast_mld_version ==
               brmctx2->multicast_mld_version &&
diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c
index 75733b5bc6f4..81a0988b97c1 100644
--- a/net/bridge/br_vlan_options.c
+++ b/net/bridge/br_vlan_options.c
@@ -291,7 +291,9 @@ bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, 
u16 vid_range,
            nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION,
                       v_opts->br_mcast_ctx.multicast_igmp_version) ||
            nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT,
-                       v_opts->br_mcast_ctx.multicast_last_member_count))
+                       v_opts->br_mcast_ctx.multicast_last_member_count) ||
+           nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
+                       v_opts->br_mcast_ctx.multicast_startup_query_count))
                goto out_err;
 
 #if IS_ENABLED(CONFIG_IPV6)
@@ -320,6 +322,7 @@ static size_t rtnl_vlan_global_opts_nlmsg_size(void)
                + nla_total_size(sizeof(u8)) /* 
BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION */
                + nla_total_size(sizeof(u8)) /* 
BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION */
                + nla_total_size(sizeof(u32)) /* 
BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT */
+               + nla_total_size(sizeof(u32)) /* 
BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT */
 #endif
                + nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
 }
@@ -401,6 +404,13 @@ static int br_vlan_process_global_one_opts(const struct 
net_bridge *br,
                v->br_mcast_ctx.multicast_last_member_count = cnt;
                *changed = true;
        }
+       if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]) {
+               u32 cnt;
+
+               cnt = 
nla_get_u32(tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]);
+               v->br_mcast_ctx.multicast_startup_query_count = cnt;
+               *changed = true;
+       }
 #if IS_ENABLED(CONFIG_IPV6)
        if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) {
                u8 ver;
@@ -424,6 +434,7 @@ static const struct nla_policy 
br_vlan_db_gpol[BRIDGE_VLANDB_GOPTS_MAX + 1] = {
        [BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION] = { .type = NLA_U8 },
        [BRIDGE_VLANDB_GOPTS_MCAST_IGMP_VERSION]        = { .type = NLA_U8 },
        [BRIDGE_VLANDB_GOPTS_MCAST_LAST_MEMBER_CNT]     = { .type = NLA_U32 },
+       [BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT]   = { .type = NLA_U32 },
 };
 
 int br_vlan_rtm_process_global_options(struct net_device *dev,
-- 
2.31.1

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