static int geneve_get_options(const struct vport *vport,
struct sk_buff *skb)
{
struct geneve_port *geneve_port = geneve_vport(vport);
if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->dst_port))
return -EMSGSIZE;
return 0;
}
static int geneve_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct dp_upcall_info *upcall)
{
struct geneve_port *geneve_port = geneve_vport(vport);
struct net *net = ovs_dp_get_net(vport->dp);
__be16 dport = htons(geneve_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 struct vport *geneve_tnl_create(const struct vport_parms *parms)
{
struct net *net = ovs_dp_get_net(parms->dp);
struct nlattr *options = parms->options;
struct geneve_port *geneve_port;
struct net_device *dev;
struct vport *vport;
struct nlattr *a;
u16 dst_port;
int err;
if (!options) {
err = -EINVAL;
goto error;
}
a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
if (a && nla_len(a) == sizeof(u16)) {
dst_port = nla_get_u16(a);
} else {
/* Require destination port from userspace. */
err = -EINVAL;
goto error;
}
vport = ovs_vport_alloc(sizeof(struct geneve_port),
&ovs_geneve_vport_ops, parms);
if (IS_ERR(vport))
return vport;
geneve_port = geneve_vport(vport);
geneve_port->dst_port = dst_port;
rtnl_lock();
dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
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);
}
