// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2014 Nicira, Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/in.h> #include <linux/ip.h> #include <linux/net.h> #include <linux/rculist.h> #include <linux/udp.h> #include <linux/if_vlan.h> #include <linux/module.h> #include <net/geneve.h> #include <net/icmp.h> #include <net/ip.h> #include <net/route.h> #include <net/udp.h> #include <net/xfrm.h> #include "datapath.h" #include "vport.h" #include "vport-netdev.h" static struct vport_ops ovs_geneve_vport_ops; /** * struct geneve_port - Keeps track of open UDP ports * @dst_port: destination port. */ struct geneve_port { u16 dst_port; }; static inline struct geneve_port *geneve_vport(const struct vport *vport) { return vport_priv(vport); } 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 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); } err = dev_change_flags(dev, dev->flags | IFF_UP, NULL); if (err < 0) { rtnl_delete_link(dev); rtnl_unlock(); ovs_vport_free(vport); goto error; } rtnl_unlock(); return vport; error: return ERR_PTR(err); } static struct vport *geneve_create(const struct vport_parms *parms) { struct vport *vport; vport = geneve_tnl_create(parms); if (IS_ERR(vport)) return vport; return ovs_netdev_link(vport, parms->name); } static struct vport_ops ovs_geneve_vport_ops = { .type = OVS_VPORT_TYPE_GENEVE, .create = geneve_create, .destroy = ovs_netdev_tunnel_destroy, .get_options = geneve_get_options, .send = dev_queue_xmit, }; static int __init ovs_geneve_tnl_init(void) { return ovs_vport_ops_register(&ovs_geneve_vport_ops); } static void __exit ovs_geneve_tnl_exit(void) { ovs_vport_ops_unregister(&ovs_geneve_vport_ops); } module_init(ovs_geneve_tnl_init); module_exit(ovs_geneve_tnl_exit); MODULE_DESCRIPTION("OVS: Geneve switching port"); MODULE_LICENSE("GPL"); MODULE_ALIAS("vport-type-5");