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vxlan: allow choosing destination port per vxlan 

Allow configuring the default destination port on a per-device basis.
Adds new netlink paramater IFLA_VXLAN_PORT to allow setting destination
port when creating new vxlan.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2013-04-27 11:31:57 +00:00 committed by David S. Miller
parent 7d836a7679
commit 823aa873bc
2 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/net/vxlan.c
View File

@ -110,6 +110,7 @@ struct vxlan_dev {
struct net_device *dev;
struct vxlan_rdst default_dst; /* default destination */
__be32 saddr; /* source address */
__be16 dst_port;
__u16 port_min; /* source port range */
__u16 port_max;
__u8 tos; /* TOS override */
@ -192,7 +193,7 @@ static int vxlan_fdb_info(struct sk_buff *skb, struct vxlan_dev *vxlan,
if (send_ip && nla_put_be32(skb, NDA_DST, rdst->remote_ip))
goto nla_put_failure;
if (rdst->remote_port && rdst->remote_port != htons(vxlan_port) &&
if (rdst->remote_port && rdst->remote_port != vxlan->dst_port &&
nla_put_be16(skb, NDA_PORT, rdst->remote_port))
goto nla_put_failure;
if (rdst->remote_vni != vxlan->default_dst.remote_vni &&
@ -467,7 +468,7 @@ static int vxlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
return -EINVAL;
port = nla_get_be16(tb[NDA_PORT]);
} else
port = htons(vxlan_port);
port = vxlan->dst_port;
if (tb[NDA_VNI]) {
if (nla_len(tb[NDA_VNI]) != sizeof(u32))
@ -579,7 +580,7 @@ static void vxlan_snoop(struct net_device *dev,
err = vxlan_fdb_create(vxlan, src_mac, src_ip,
NUD_REACHABLE,
NLM_F_EXCL|NLM_F_CREATE,
vxlan_port,
vxlan->dst_port,
vxlan->default_dst.remote_vni,
0, NTF_SELF);
spin_unlock(&vxlan->hash_lock);
@ -970,7 +971,7 @@ static netdev_tx_t vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
__be16 df = 0;
__u8 tos, ttl;
dst_port = rdst->remote_port ? rdst->remote_port : htons(vxlan_port);
dst_port = rdst->remote_port ? rdst->remote_port : vxlan->dst_port;
vni = rdst->remote_vni;
dst = rdst->remote_ip;
@ -1314,6 +1315,7 @@ static void vxlan_setup(struct net_device *dev)
inet_get_local_port_range(&low, &high);
vxlan->port_min = low;
vxlan->port_max = high;
vxlan->dst_port = htons(vxlan_port);
vxlan->dev = dev;
@ -1336,6 +1338,7 @@ static const struct nla_policy vxlan_policy[IFLA_VXLAN_MAX + 1] = {
[IFLA_VXLAN_RSC] = { .type = NLA_U8 },
[IFLA_VXLAN_L2MISS] = { .type = NLA_U8 },
[IFLA_VXLAN_L3MISS] = { .type = NLA_U8 },
[IFLA_VXLAN_PORT] = { .type = NLA_U16 },
};
static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[])
@ -1465,6 +1468,9 @@ static int vxlan_newlink(struct net *net, struct net_device *dev,
vxlan->port_max = ntohs(p->high);
}
if (data[IFLA_VXLAN_PORT])
vxlan->dst_port = nla_get_be16(data[IFLA_VXLAN_PORT]);
SET_ETHTOOL_OPS(dev, &vxlan_ethtool_ops);
err = register_netdevice(dev);
@ -1500,6 +1506,7 @@ static size_t vxlan_get_size(const struct net_device *dev)
nla_total_size(sizeof(__u32)) + /* IFLA_VXLAN_AGEING */
nla_total_size(sizeof(__u32)) + /* IFLA_VXLAN_LIMIT */
nla_total_size(sizeof(struct ifla_vxlan_port_range)) +
nla_total_size(sizeof(__be16))+ /* IFLA_VXLAN_PORT */
0;
}
@ -1536,7 +1543,8 @@ static int vxlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
nla_put_u8(skb, IFLA_VXLAN_L3MISS,
!!(vxlan->flags & VXLAN_F_L3MISS)) ||
nla_put_u32(skb, IFLA_VXLAN_AGEING, vxlan->age_interval) ||
nla_put_u32(skb, IFLA_VXLAN_LIMIT, vxlan->addrmax))
nla_put_u32(skb, IFLA_VXLAN_LIMIT, vxlan->addrmax) ||
nla_put_be16(skb, IFLA_VXLAN_PORT, vxlan->dst_port))
goto nla_put_failure;
if (nla_put(skb, IFLA_VXLAN_PORT_RANGE, sizeof(ports), &ports))

3
include/uapi/linux/if_link.h
View File

@ -305,11 +305,12 @@ enum {
IFLA_VXLAN_LEARNING,
IFLA_VXLAN_AGEING,
IFLA_VXLAN_LIMIT,
IFLA_VXLAN_PORT_RANGE,
IFLA_VXLAN_PORT_RANGE, /* source port */
IFLA_VXLAN_PROXY,
IFLA_VXLAN_RSC,
IFLA_VXLAN_L2MISS,
IFLA_VXLAN_L3MISS,
IFLA_VXLAN_PORT, /* destination port */
__IFLA_VXLAN_MAX
};
#define IFLA_VXLAN_MAX (__IFLA_VXLAN_MAX - 1)