[Bridge] [PATCH net-next 14/20] bridge: netlink: add support for igmp's hash_elasticity
Nikolay Aleksandrov
razor at blackwall.org
Sun Oct 4 12:23:41 UTC 2015
From: Nikolay Aleksandrov <nikolay at cumulusnetworks.com>
Add IFLA_BR_MCAST_HASH_ELASTICITY to allow setting/getting
br->hash_elasticity via netlink.
Signed-off-by: Nikolay Aleksandrov <nikolay at cumulusnetworks.com>
---
include/uapi/linux/if_link.h | 1 +
net/bridge/br_netlink.c | 12 +++++++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index fe5fac5c2a7f..ca7ca766d8af 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -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,
};
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index e21296dacf42..b210a639e8d1 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -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
--
2.4.3
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