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140 lines
2.9 KiB
140 lines
2.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 2014 Nicira, Inc. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/in.h> |
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#include <linux/ip.h> |
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#include <linux/net.h> |
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#include <linux/rculist.h> |
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#include <linux/udp.h> |
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#include <linux/if_vlan.h> |
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#include <linux/module.h> |
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#include <net/geneve.h> |
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#include <net/icmp.h> |
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#include <net/ip.h> |
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#include <net/route.h> |
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#include <net/udp.h> |
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#include <net/xfrm.h> |
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#include "datapath.h" |
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#include "vport.h" |
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#include "vport-netdev.h" |
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static struct vport_ops ovs_geneve_vport_ops; |
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/** |
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* struct geneve_port - Keeps track of open UDP ports |
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* @dst_port: destination port. |
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*/ |
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struct geneve_port { |
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u16 dst_port; |
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}; |
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static inline struct geneve_port *geneve_vport(const struct vport *vport) |
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{ |
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return vport_priv(vport); |
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} |
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static int geneve_get_options(const struct vport *vport, |
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struct sk_buff *skb) |
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{ |
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struct geneve_port *geneve_port = geneve_vport(vport); |
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if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->dst_port)) |
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return -EMSGSIZE; |
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return 0; |
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} |
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static struct vport *geneve_tnl_create(const struct vport_parms *parms) |
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{ |
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struct net *net = ovs_dp_get_net(parms->dp); |
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struct nlattr *options = parms->options; |
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struct geneve_port *geneve_port; |
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struct net_device *dev; |
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struct vport *vport; |
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struct nlattr *a; |
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u16 dst_port; |
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int err; |
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if (!options) { |
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err = -EINVAL; |
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goto error; |
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} |
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a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT); |
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if (a && nla_len(a) == sizeof(u16)) { |
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dst_port = nla_get_u16(a); |
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} else { |
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/* Require destination port from userspace. */ |
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err = -EINVAL; |
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goto error; |
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} |
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vport = ovs_vport_alloc(sizeof(struct geneve_port), |
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&ovs_geneve_vport_ops, parms); |
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if (IS_ERR(vport)) |
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return vport; |
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geneve_port = geneve_vport(vport); |
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geneve_port->dst_port = dst_port; |
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rtnl_lock(); |
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dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port); |
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if (IS_ERR(dev)) { |
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rtnl_unlock(); |
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ovs_vport_free(vport); |
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return ERR_CAST(dev); |
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} |
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err = dev_change_flags(dev, dev->flags | IFF_UP, NULL); |
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if (err < 0) { |
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rtnl_delete_link(dev); |
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rtnl_unlock(); |
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ovs_vport_free(vport); |
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goto error; |
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} |
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rtnl_unlock(); |
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return vport; |
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error: |
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return ERR_PTR(err); |
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} |
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static struct vport *geneve_create(const struct vport_parms *parms) |
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{ |
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struct vport *vport; |
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vport = geneve_tnl_create(parms); |
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if (IS_ERR(vport)) |
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return vport; |
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return ovs_netdev_link(vport, parms->name); |
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} |
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static struct vport_ops ovs_geneve_vport_ops = { |
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.type = OVS_VPORT_TYPE_GENEVE, |
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.create = geneve_create, |
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.destroy = ovs_netdev_tunnel_destroy, |
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.get_options = geneve_get_options, |
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.send = dev_queue_xmit, |
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}; |
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static int __init ovs_geneve_tnl_init(void) |
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{ |
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return ovs_vport_ops_register(&ovs_geneve_vport_ops); |
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} |
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static void __exit ovs_geneve_tnl_exit(void) |
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{ |
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ovs_vport_ops_unregister(&ovs_geneve_vport_ops); |
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} |
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module_init(ovs_geneve_tnl_init); |
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module_exit(ovs_geneve_tnl_exit); |
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MODULE_DESCRIPTION("OVS: Geneve switching port"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("vport-type-5");
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