[Bridge] [PATCH net-next 13/15] net: bridge: vlan: add support for mcast router global option
Nikolay Aleksandrov
razor at blackwall.org
Tue Aug 10 15:29:31 UTC 2021
From: Nikolay Aleksandrov <nikolay at nvidia.com>
Add support to change and retrieve global vlan multicast router state
which is used for the bridge itself. We just need to pass multicast context
to br_multicast_set_router instead of bridge device and the rest of the
logic remains the same.
Signed-off-by: Nikolay Aleksandrov <nikolay at nvidia.com>
---
include/uapi/linux/if_bridge.h | 1 +
net/bridge/br_multicast.c | 11 +++++------
net/bridge/br_netlink.c | 3 ++-
net/bridge/br_private.h | 3 ++-
net/bridge/br_sysfs_br.c | 2 +-
net/bridge/br_vlan_options.c | 15 ++++++++++++++-
6 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index ee691a0bc067..716ce30b3ca8 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -561,6 +561,7 @@ enum {
BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL,
BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
+ BRIDGE_VLANDB_GOPTS_MCAST_ROUTER,
__BRIDGE_VLANDB_GOPTS_MAX
};
#define BRIDGE_VLANDB_GOPTS_MAX (__BRIDGE_VLANDB_GOPTS_MAX - 1)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index a780ad8aca37..df6bf6a237aa 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -4053,17 +4053,16 @@ void br_multicast_dev_del(struct net_bridge *br)
rcu_barrier();
}
-int br_multicast_set_router(struct net_bridge *br, unsigned long val)
+int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val)
{
- struct net_bridge_mcast *brmctx = &br->multicast_ctx;
int err = -EINVAL;
- spin_lock_bh(&br->multicast_lock);
+ spin_lock_bh(&brmctx->br->multicast_lock);
switch (val) {
case MDB_RTR_TYPE_DISABLED:
case MDB_RTR_TYPE_PERM:
- br_mc_router_state_change(br, val == MDB_RTR_TYPE_PERM);
+ br_mc_router_state_change(brmctx->br, val == MDB_RTR_TYPE_PERM);
del_timer(&brmctx->ip4_mc_router_timer);
#if IS_ENABLED(CONFIG_IPV6)
del_timer(&brmctx->ip6_mc_router_timer);
@@ -4073,13 +4072,13 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val)
break;
case MDB_RTR_TYPE_TEMP_QUERY:
if (brmctx->multicast_router != MDB_RTR_TYPE_TEMP_QUERY)
- br_mc_router_state_change(br, false);
+ br_mc_router_state_change(brmctx->br, false);
brmctx->multicast_router = val;
err = 0;
break;
}
- spin_unlock_bh(&br->multicast_lock);
+ spin_unlock_bh(&brmctx->br->multicast_lock);
return err;
}
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 1d8ff9bbbd2f..93a517410671 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -1349,7 +1349,8 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
if (data[IFLA_BR_MCAST_ROUTER]) {
u8 multicast_router = nla_get_u8(data[IFLA_BR_MCAST_ROUTER]);
- err = br_multicast_set_router(br, multicast_router);
+ err = br_multicast_set_router(&br->multicast_ctx,
+ multicast_router);
if (err)
return err;
}
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 76adb729e58c..f5af6b56be8f 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -890,7 +890,7 @@ void br_multicast_dev_del(struct net_bridge *br);
void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
struct net_bridge_mcast *brmctx,
bool local_rcv, bool local_orig);
-int br_multicast_set_router(struct net_bridge *br, unsigned long val);
+int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
int br_multicast_toggle(struct net_bridge *br, unsigned long val,
struct netlink_ext_ack *extack);
@@ -1204,6 +1204,7 @@ br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
brmctx1->multicast_startup_query_interval ==
brmctx2->multicast_startup_query_interval &&
brmctx1->multicast_querier == brmctx2->multicast_querier &&
+ brmctx1->multicast_router == brmctx2->multicast_router &&
#if IS_ENABLED(CONFIG_IPV6)
brmctx1->multicast_mld_version ==
brmctx2->multicast_mld_version &&
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index e1234bd8d5a0..d9a89ddd0331 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -390,7 +390,7 @@ static ssize_t multicast_router_show(struct device *d,
static int set_multicast_router(struct net_bridge *br, unsigned long val,
struct netlink_ext_ack *extack)
{
- return br_multicast_set_router(br, val);
+ return br_multicast_set_router(&br->multicast_ctx, val);
}
static ssize_t multicast_router_store(struct device *d,
diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c
index 0d0db8ddae45..6ba45b73931f 100644
--- a/net/bridge/br_vlan_options.c
+++ b/net/bridge/br_vlan_options.c
@@ -296,7 +296,9 @@ bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
nla_put_u32(skb, BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_CNT,
v_opts->br_mcast_ctx.multicast_startup_query_count) ||
nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
- v_opts->br_mcast_ctx.multicast_querier))
+ v_opts->br_mcast_ctx.multicast_querier) ||
+ nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_ROUTER,
+ v_opts->br_mcast_ctx.multicast_router))
goto out_err;
clockval = jiffies_to_clock_t(v_opts->br_mcast_ctx.multicast_last_member_interval);
@@ -358,6 +360,7 @@ static size_t rtnl_vlan_global_opts_nlmsg_size(void)
+ nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL */
+ nla_total_size(sizeof(u64)) /* BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL */
+ nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_QUERIER */
+ + nla_total_size(sizeof(u8)) /* BRIDGE_VLANDB_GOPTS_MCAST_ROUTER */
#endif
+ nla_total_size(sizeof(u16)); /* BRIDGE_VLANDB_GOPTS_RANGE */
}
@@ -497,6 +500,15 @@ static int br_vlan_process_global_one_opts(const struct net_bridge *br,
return err;
*changed = true;
}
+ if (tb[BRIDGE_VLANDB_GOPTS_MCAST_ROUTER]) {
+ u8 val;
+
+ val = nla_get_u8(tb[BRIDGE_VLANDB_GOPTS_MCAST_ROUTER]);
+ err = br_multicast_set_router(&v->br_mcast_ctx, val);
+ if (err)
+ return err;
+ *changed = true;
+ }
#if IS_ENABLED(CONFIG_IPV6)
if (tb[BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION]) {
u8 ver;
@@ -520,6 +532,7 @@ 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_QUERY_INTVL] = { .type = NLA_U64 },
[BRIDGE_VLANDB_GOPTS_MCAST_QUERIER] = { .type = NLA_U8 },
+ [BRIDGE_VLANDB_GOPTS_MCAST_ROUTER] = { .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 },
--
2.31.1
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