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net: bridge: convert and rename mcast disabled

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Convert mcast disabled to an option bit and while doing so convert the
logic to check if multicast is enabled instead. That is make the logic
follow the option value - if it's set then mcast is enabled and vice versa.
This avoids a few confusing places where we inverted the value that's being
set to follow the mcast_disabled logic.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2018-09-26 17:01:03 +03:00 committed by David S. Miller
parent be3664a038
commit 13cefad2f2
5 changed files with 24 additions and 21 deletions
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6
net/bridge/br_mdb.c
View File

@ -84,7 +84,7 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
int i, err = 0;
int idx = 0, s_idx = cb->args[1];
if (br->multicast_disabled)
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
return 0;
mdb = rcu_dereference(br->mdb);
@ -598,7 +598,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
struct net_bridge_port *p;
int ret;
if (!netif_running(br->dev) || br->multicast_disabled)
if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
return -EINVAL;
dev = __dev_get_by_index(net, entry->ifindex);
@ -673,7 +673,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
struct br_ip ip;
int err = -EINVAL;
if (!netif_running(br->dev) || br->multicast_disabled)
if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
return -EINVAL;
__mdb_entry_to_br_ip(entry, &ip);

32
net/bridge/br_multicast.c
View File

@ -158,7 +158,7 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
struct net_bridge_mdb_htable *mdb = rcu_dereference(br->mdb);
struct br_ip ip;
if (br->multicast_disabled)
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
return NULL;
if (BR_INPUT_SKB_CB(skb)->igmp)
@ -628,7 +628,7 @@ static struct net_bridge_mdb_entry *br_multicast_get_group(
port ? port->dev->name : br->dev->name);
err = -E2BIG;
disable:
br->multicast_disabled = 1;
br_opt_toggle(br, BROPT_MULTICAST_ENABLED, false);
goto err;
}
}
@ -894,7 +894,7 @@ static void br_multicast_querier_expired(struct net_bridge *br,
struct bridge_mcast_own_query *query)
{
spin_lock(&br->multicast_lock);
if (!netif_running(br->dev) || br->multicast_disabled)
if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
goto out;
br_multicast_start_querier(br, query);
@ -965,7 +965,8 @@ static void br_multicast_send_query(struct net_bridge *br,
struct br_ip br_group;
unsigned long time;
if (!netif_running(br->dev) || br->multicast_disabled ||
if (!netif_running(br->dev) ||
!br_opt_get(br, BROPT_MULTICAST_ENABLED) ||
!br->multicast_querier)
return;
@ -1036,7 +1037,7 @@ static void br_mc_disabled_update(struct net_device *dev, bool value)
.orig_dev = dev,
.id = SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
.flags = SWITCHDEV_F_DEFER,
.u.mc_disabled = value,
.u.mc_disabled = !value,
};
switchdev_port_attr_set(dev, &attr);
@ -1054,7 +1055,8 @@ int br_multicast_add_port(struct net_bridge_port *port)
timer_setup(&port->ip6_own_query.timer,
br_ip6_multicast_port_query_expired, 0);
#endif
br_mc_disabled_update(port->dev, port->br->multicast_disabled);
br_mc_disabled_update(port->dev,
br_opt_get(port->br, BROPT_MULTICAST_ENABLED));
port->mcast_stats = netdev_alloc_pcpu_stats(struct bridge_mcast_stats);
if (!port->mcast_stats)
@ -1091,7 +1093,7 @@ static void __br_multicast_enable_port(struct net_bridge_port *port)
{
struct net_bridge *br = port->br;
if (br->multicast_disabled || !netif_running(br->dev))
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED) || !netif_running(br->dev))
return;
br_multicast_enable(&port->ip4_own_query);
@ -1904,7 +1906,7 @@ int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
BR_INPUT_SKB_CB(skb)->igmp = 0;
BR_INPUT_SKB_CB(skb)->mrouters_only = 0;
if (br->multicast_disabled)
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
return 0;
switch (skb->protocol) {
@ -1998,7 +2000,7 @@ static void __br_multicast_open(struct net_bridge *br,
{
query->startup_sent = 0;
if (br->multicast_disabled)
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
return;
mod_timer(&query->timer, jiffies);
@ -2173,12 +2175,12 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
int err = 0;
spin_lock_bh(&br->multicast_lock);
if (br->multicast_disabled == !val)
if (!!br_opt_get(br, BROPT_MULTICAST_ENABLED) == !!val)
goto unlock;
br_mc_disabled_update(br->dev, !val);
br->multicast_disabled = !val;
if (br->multicast_disabled)
br_mc_disabled_update(br->dev, val);
br_opt_toggle(br, BROPT_MULTICAST_ENABLED, !!val);
if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
goto unlock;
if (!netif_running(br->dev))
@ -2189,7 +2191,7 @@ int br_multicast_toggle(struct net_bridge *br, unsigned long val)
if (mdb->old) {
err = -EEXIST;
rollback:
br->multicast_disabled = !!val;
br_opt_toggle(br, BROPT_MULTICAST_ENABLED, false);
goto unlock;
}
@ -2213,7 +2215,7 @@ bool br_multicast_enabled(const struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
return !br->multicast_disabled;
return !!br_opt_get(br, BROPT_MULTICAST_ENABLED);
}
EXPORT_SYMBOL_GPL(br_multicast_enabled);

3
net/bridge/br_netlink.c
View File

@ -1422,7 +1422,8 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
#endif
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING,
br_opt_get(br, BROPT_MULTICAST_ENABLED)) ||
nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
br->multicast_query_use_ifaddr) ||
nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||

2
net/bridge/br_private.h
View File

@ -313,6 +313,7 @@ enum net_bridge_opts {
BROPT_NF_CALL_IP6TABLES,
BROPT_NF_CALL_ARPTABLES,
BROPT_GROUP_ADDR_SET,
BROPT_MULTICAST_ENABLED,
};
struct net_bridge {
@ -366,7 +367,6 @@ struct net_bridge {
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
unsigned char multicast_router;
u8 multicast_disabled:1;
u8 multicast_querier:1;
u8 multicast_query_use_ifaddr:1;
u8 has_ipv6_addr:1;

2
net/bridge/br_sysfs_br.c
View File

@ -349,7 +349,7 @@ static ssize_t multicast_snooping_show(struct device *d,
char *buf)
{
struct net_bridge *br = to_bridge(d);
return sprintf(buf, "%d\n", !br->multicast_disabled);
return sprintf(buf, "%d\n", br_opt_get(br, BROPT_MULTICAST_ENABLED));
}
static ssize_t multicast_snooping_store(struct device *d,