static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct ovs_key_ipv4_tunnel *tun_key;
struct net *net = ovs_dp_get_net(vport->dp);
struct vxlan_port *vxlan_port = vxlan_vport(vport);
__be16 dst_port = inet_sport(vxlan_port->vs->sock->sk);
struct vxlan_metadata md = {0};
struct rtable *rt;
__be16 src_port;
__be32 saddr;
__be16 df;
int err;
u32 vxflags;
if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
err = -EINVAL;
goto error;
}
tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
/* Route lookup */
saddr = tun_key->ipv4_src;
rt = find_route(ovs_dp_get_net(vport->dp),
&saddr, tun_key->ipv4_dst,
IPPROTO_UDP, tun_key->ipv4_tos,
skb->mark);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
}
df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
skb->ignore_df = 1;
src_port = udp_flow_src_port(net, skb, 0, 0, true);
md.vni = htonl(be64_to_cpu(tun_key->tun_id) << 8);
md.gbp = vxlan_ext_gbp(skb);
vxflags = vxlan_port->exts |
(tun_key->tun_flags & TUNNEL_CSUM ? VXLAN_F_UDP_CSUM : 0);
err = vxlan_xmit_skb(vxlan_port->vs, rt, skb,
saddr, tun_key->ipv4_dst,
tun_key->ipv4_tos,
tun_key->ipv4_ttl, df,
src_port, dst_port,
&md, false, vxflags);
if (err < 0)
ip_rt_put(rt);
return err;
error:
kfree_skb(skb);
return err;
}
static int lisp_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct dp_upcall_info *upcall)
{
struct lisp_port *lisp_port = lisp_vport(vport);
struct net *net = ovs_dp_get_net(vport->dp);
__be16 dport = htons(lisp_port->port_no);
__be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
return ovs_tunnel_get_egress_info(upcall, ovs_dp_get_net(vport->dp),
skb, IPPROTO_UDP, sport, dport);
}
static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct net *net = ovs_dp_get_net(vport->dp);
struct vxlan_port *vxlan_port = vxlan_vport(vport);
__be16 dst_port = inet_sk(vxlan_port->vs->sock->sk)->inet_sport;
struct ovs_key_ipv4_tunnel *tun_key;
struct rtable *rt;
struct flowi4 fl;
__be16 src_port;
__be16 df;
int err;
if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
err = -EINVAL;
goto error;
}
tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
/* Route lookup */
memset(&fl, 0, sizeof(fl));
fl.daddr = tun_key->ipv4_dst;
fl.saddr = tun_key->ipv4_src;
fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
fl.flowi4_mark = skb->mark;
fl.flowi4_proto = IPPROTO_UDP;
rt = ip_route_output_key(net, &fl);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
}
df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->ignore_df = 1;
src_port = udp_flow_src_port(net, skb, 0, 0, true);
err = vxlan_xmit_skb(vxlan_port->vs, rt, skb,
fl.saddr, tun_key->ipv4_dst,
tun_key->ipv4_tos, tun_key->ipv4_ttl, df,
src_port, dst_port,
htonl(be64_to_cpu(tun_key->tun_id) << 8),
false);
if (err < 0)
ip_rt_put(rt);
return err;
error:
kfree_skb(skb);
return err;
}
static int stt_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ovs_tunnel_info *egress_tun_info)
{
struct stt_port *stt_port = stt_vport(vport);
struct net *net = ovs_dp_get_net(vport->dp);
__be16 dport = inet_sk(stt_port->stt_sock->sock->sk)->inet_sport;
__be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
/* Get tp_src and tp_dst, refert to stt_build_header().
*/
return ovs_tunnel_get_egress_info(egress_tun_info,
ovs_dp_get_net(vport->dp),
OVS_CB(skb)->egress_tun_info,
IPPROTO_TCP, skb->mark, sport, dport);
}
static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ovs_tunnel_info *egress_tun_info)
{
struct net *net = ovs_dp_get_net(vport->dp);
struct vxlan_port *vxlan_port = vxlan_vport(vport);
__be16 dst_port = inet_sport(vxlan_port->vs->sock->sk);
__be16 src_port;
src_port = udp_flow_src_port(net, skb, 0, 0, true);
return ovs_tunnel_get_egress_info(egress_tun_info, net,
OVS_CB(skb)->egress_tun_info,
IPPROTO_UDP, skb->mark,
src_port, dst_port);
}
static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct net *net = ovs_dp_get_net(vport->dp);
struct vxlan_port *vxlan_port = vxlan_vport(vport);
__be16 dst_port = inet_sport(vxlan_port->vs->sock->sk);
struct rtable *rt;
__be16 src_port;
__be32 saddr;
__be16 df;
int err;
if (unlikely(!OVS_CB(skb)->tun_key)) {
err = -EINVAL;
goto error;
}
/* Route lookup */
saddr = OVS_CB(skb)->tun_key->ipv4_src;
rt = find_route(ovs_dp_get_net(vport->dp),
&saddr,
OVS_CB(skb)->tun_key->ipv4_dst,
IPPROTO_UDP,
OVS_CB(skb)->tun_key->ipv4_tos,
skb->mark);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
}
df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->local_df = 1;
src_port = udp_flow_src_port(net, skb, 0, 0, true);
err = vxlan_xmit_skb(vxlan_port->vs, rt, skb,
saddr, OVS_CB(skb)->tun_key->ipv4_dst,
OVS_CB(skb)->tun_key->ipv4_tos,
OVS_CB(skb)->tun_key->ipv4_ttl, df,
src_port, dst_port,
htonl(be64_to_cpu(OVS_CB(skb)->tun_key->tun_id) << 8));
if (err < 0)
ip_rt_put(rt);
error:
return err;
}
static int stt_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct net *net = ovs_dp_get_net(vport->dp);
struct stt_port *stt_port = stt_vport(vport);
__be16 dport = inet_sk(stt_port->stt_sock->sock->sk)->inet_sport;
const struct ovs_key_ipv4_tunnel *tun_key;
const struct ovs_tunnel_info *tun_info;
struct rtable *rt;
__be16 sport;
__be32 saddr;
__be16 df;
int err;
tun_info = OVS_CB(skb)->egress_tun_info;
if (unlikely(!tun_info)) {
err = -EINVAL;
goto error;
}
tun_key = &tun_info->tunnel;
/* Route lookup */
saddr = tun_key->ipv4_src;
rt = find_route(ovs_dp_get_net(vport->dp),
&saddr, tun_key->ipv4_dst,
IPPROTO_TCP, tun_key->ipv4_tos,
skb->mark);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
}
df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
skb->ignore_df = 1;
return stt_xmit_skb(skb, rt, saddr, tun_key->ipv4_dst,
tun_key->ipv4_tos, tun_key->ipv4_ttl,
df, sport, dport, tun_key->tun_id);
error:
kfree_skb(skb);
return err;
}
static struct vport *vxlan_tnl_create(const struct vport_parms *parms)
{
struct net *net = ovs_dp_get_net(parms->dp);
struct nlattr *options = parms->options;
struct net_device *dev;
struct vport *vport;
struct nlattr *a;
int err;
struct vxlan_config conf = {
.no_share = true,
.flags = VXLAN_F_COLLECT_METADATA,
};
if (!options) {
err = -EINVAL;
goto error;
}
a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
if (a && nla_len(a) == sizeof(u16)) {
conf.dst_port = htons(nla_get_u16(a));
} else {
/* Require destination port from userspace. */
err = -EINVAL;
goto error;
}
vport = ovs_vport_alloc(0, &ovs_vxlan_netdev_vport_ops, parms);
if (IS_ERR(vport))
return vport;
a = nla_find_nested(options, OVS_TUNNEL_ATTR_EXTENSION);
if (a) {
err = vxlan_configure_exts(vport, a, &conf);
if (err) {
ovs_vport_free(vport);
goto error;
}
}
rtnl_lock();
dev = vxlan_dev_create(net, parms->name, NET_NAME_USER, &conf);
if (IS_ERR(dev)) {
rtnl_unlock();
ovs_vport_free(vport);
return ERR_CAST(dev);
}
dev_change_flags(dev, dev->flags | IFF_UP);
rtnl_unlock();
return vport;
error:
return ERR_PTR(err);
}
static struct vport *vxlan_create(const struct vport_parms *parms)
{
struct vport *vport;
vport = vxlan_tnl_create(parms);
if (IS_ERR(vport))
return vport;
return ovs_netdev_link(vport, parms->name);
}
static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct dp_upcall_info *upcall)
{
struct vxlan_dev *vxlan = netdev_priv(vport->dev);
struct net *net = ovs_dp_get_net(vport->dp);
unsigned short family = ip_tunnel_info_af(upcall->egress_tun_info);
__be16 dst_port = vxlan_dev_dst_port(vxlan, family);
__be16 src_port;
int port_min;
int port_max;
inet_get_local_port_range(net, &port_min, &port_max);
src_port = udp_flow_src_port(net, skb, 0, 0, true);
return ovs_tunnel_get_egress_info(upcall, net,
skb, IPPROTO_UDP,
src_port, dst_port);
}
static struct vport_ops ovs_vxlan_netdev_vport_ops = {
.type = OVS_VPORT_TYPE_VXLAN,
.create = vxlan_create,
.destroy = ovs_netdev_tunnel_destroy,
.get_options = vxlan_get_options,
.send = ovs_netdev_send,
.get_egress_tun_info = vxlan_get_egress_tun_info,
};
static int __init ovs_vxlan_tnl_init(void)
{
return ovs_vport_ops_register(&ovs_vxlan_netdev_vport_ops);
}
static void __exit ovs_vxlan_tnl_exit(void)
{
ovs_vport_ops_unregister(&ovs_vxlan_netdev_vport_ops);
}
