diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_netlink.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 755bfe0ab404..a05a4306d42d 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -765,6 +765,8 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { [IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 }, [IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 }, [IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 }, + [IFLA_BR_GROUP_ADDR] = { .type = NLA_BINARY, + .len = ETH_ALEN }, }; static int br_changelink(struct net_device *brdev, struct nlattr *tb[], @@ -838,6 +840,25 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[], br->group_fwd_mask = fwd_mask; } + if (data[IFLA_BR_GROUP_ADDR]) { + u8 new_addr[ETH_ALEN]; + + if (nla_len(data[IFLA_BR_GROUP_ADDR]) != ETH_ALEN) + return -EINVAL; + memcpy(new_addr, nla_data(data[IFLA_BR_GROUP_ADDR]), ETH_ALEN); + if (!is_link_local_ether_addr(new_addr)) + return -EINVAL; + if (new_addr[5] == 1 || /* 802.3x Pause address */ + new_addr[5] == 2 || /* 802.3ad Slow protocols */ + new_addr[5] == 3) /* 802.1X PAE address */ + return -EINVAL; + spin_lock_bh(&br->lock); + memcpy(br->group_addr, new_addr, sizeof(br->group_addr)); + spin_unlock_bh(&br->lock); + br->group_addr_set = true; + br_recalculate_fwd_mask(br); + } + return 0; } @@ -864,6 +885,7 @@ static size_t br_get_size(const struct net_device *brdev) nla_total_size(sizeof(u64)) + /* IFLA_BR_TCN_TIMER */ nla_total_size(sizeof(u64)) + /* IFLA_BR_TOPOLOGY_CHANGE_TIMER */ nla_total_size(sizeof(u64)) + /* IFLA_BR_GC_TIMER */ + nla_total_size(ETH_ALEN) + /* IFLA_BR_GROUP_ADDR */ 0; } @@ -911,7 +933,8 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) nla_put_u64(skb, IFLA_BR_TCN_TIMER, tcn_timer) || nla_put_u64(skb, IFLA_BR_TOPOLOGY_CHANGE_TIMER, topology_change_timer) || - nla_put_u64(skb, IFLA_BR_GC_TIMER, gc_timer)) + nla_put_u64(skb, IFLA_BR_GC_TIMER, gc_timer) || + nla_put(skb, IFLA_BR_GROUP_ADDR, ETH_ALEN, br->group_addr)) return -EMSGSIZE; #ifdef CONFIG_BRIDGE_VLAN_FILTERING |