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bridge: netlink: add support for igmp's hash_elasticity 

Add IFLA_BR_MCAST_HASH_ELASTICITY to allow setting/getting
br->hash_elasticity via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2015-10-04 14:23:41 +02:00 committed by David S. Miller
parent ba062d7cc6
commit 431db3c050
2 changed files with 12 additions and 1 deletions
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1
include/uapi/linux/if_link.h
View File

@ -249,6 +249,7 @@ enum {
IFLA_BR_MCAST_SNOOPING,
IFLA_BR_MCAST_QUERY_USE_IFADDR,
IFLA_BR_MCAST_QUERIER,
IFLA_BR_MCAST_HASH_ELASTICITY,
__IFLA_BR_MAX,
};

12
net/bridge/br_netlink.c
View File

@ -771,6 +771,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
[IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
[IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
[IFLA_BR_MCAST_HASH_ELASTICITY] = { .type = NLA_U32 },
};
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@ -897,6 +898,12 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
if (err)
return err;
}
if (data[IFLA_BR_MCAST_HASH_ELASTICITY]) {
u32 val = nla_get_u32(data[IFLA_BR_MCAST_HASH_ELASTICITY]);
br->hash_elasticity = val;
}
#endif
return 0;
@ -931,6 +938,7 @@ static size_t br_get_size(const struct net_device *brdev)
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_SNOOPING */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
nla_total_size(sizeof(u8)) + /* IFLA_BR_MCAST_QUERIER */
nla_total_size(sizeof(u32)) + /* IFLA_BR_MCAST_HASH_ELASTICITY */
#endif
0;
}
@ -993,7 +1001,9 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
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))
nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier) ||
nla_put_u32(skb, IFLA_BR_MCAST_HASH_ELASTICITY,
br->hash_elasticity))
return -EMSGSIZE;
#endif