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bridge: netlink: add support for default_pvid

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Add IFLA_BR_VLAN_DEFAULT_PVID to allow setting/getting bridge's
default_pvid 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 14:23:47 +02:00 committed by David S. Miller
parent 93870cc02a
commit 0f963b7592
4 changed files with 21 additions and 8 deletions
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1
include/uapi/linux/if_link.h
View File

@ -262,6 +262,7 @@ enum {
IFLA_BR_NF_CALL_IPTABLES,
IFLA_BR_NF_CALL_IP6TABLES,
IFLA_BR_NF_CALL_ARPTABLES,
IFLA_BR_VLAN_DEFAULT_PVID,
__IFLA_BR_MAX,
};

13
net/bridge/br_netlink.c
View File

@ -784,6 +784,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
[IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 },
[IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 },
[IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 },
[IFLA_BR_VLAN_DEFAULT_PVID] = { .type = NLA_U16 },
};
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@ -847,6 +848,14 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
if (err)
return err;
}
if (data[IFLA_BR_VLAN_DEFAULT_PVID]) {
__u16 defpvid = nla_get_u16(data[IFLA_BR_VLAN_DEFAULT_PVID]);
err = __br_vlan_set_default_pvid(br, defpvid);
if (err)
return err;
}
#endif
if (data[IFLA_BR_GROUP_FWD_MASK]) {
@ -1007,6 +1016,7 @@ static size_t br_get_size(const struct net_device *brdev)
nla_total_size(sizeof(u8)) + /* IFLA_BR_VLAN_FILTERING */
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
nla_total_size(sizeof(__be16)) + /* IFLA_BR_VLAN_PROTOCOL */
nla_total_size(sizeof(u16)) + /* IFLA_BR_VLAN_DEFAULT_PVID */
#endif
nla_total_size(sizeof(u16)) + /* IFLA_BR_GROUP_FWD_MASK */
nla_total_size(sizeof(struct ifla_bridge_id)) + /* IFLA_BR_ROOT_ID */
@ -1094,7 +1104,8 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
return -EMSGSIZE;
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto))
if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto) ||
nla_put_u16(skb, IFLA_BR_VLAN_DEFAULT_PVID, br->default_pvid))
return -EMSGSIZE;
#endif
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING

1
net/bridge/br_private.h
View File

@ -690,6 +690,7 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
int br_vlan_init(struct net_bridge *br);
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
void nbp_vlan_flush(struct net_bridge_port *port);

14
net/bridge/br_vlan.c
View File

@ -727,7 +727,7 @@ static void br_vlan_disable_default_pvid(struct net_bridge *br)
br->default_pvid = 0;
}
static int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
{
const struct net_bridge_vlan *pvent;
struct net_bridge_port *p;
@ -735,6 +735,11 @@ static int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
int err = 0;
unsigned long *changed;
if (!pvid) {
br_vlan_disable_default_pvid(br);
return 0;
}
changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
GFP_KERNEL);
if (!changed)
@ -825,12 +830,7 @@ int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
err = -EPERM;
goto unlock;
}
if (!pvid)
br_vlan_disable_default_pvid(br);
else
err = __br_vlan_set_default_pvid(br, pvid);
err = __br_vlan_set_default_pvid(br, pvid);
unlock:
rtnl_unlock();
return err;