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116 lines
2.7 KiB
116 lines
2.7 KiB
/* |
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* Copyright (c) 2007-2014 Nicira, Inc. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of version 2 of the GNU General Public |
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* License as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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* 02110-1301, USA |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/if.h> |
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#include <linux/skbuff.h> |
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#include <linux/ip.h> |
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#include <linux/if_tunnel.h> |
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#include <linux/if_vlan.h> |
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#include <linux/in.h> |
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#include <linux/in_route.h> |
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#include <linux/inetdevice.h> |
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#include <linux/jhash.h> |
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#include <linux/list.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/workqueue.h> |
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#include <linux/rculist.h> |
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#include <net/route.h> |
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#include <net/xfrm.h> |
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#include <net/icmp.h> |
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#include <net/ip.h> |
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#include <net/ip_tunnels.h> |
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#include <net/gre.h> |
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#include <net/net_namespace.h> |
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#include <net/netns/generic.h> |
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#include <net/protocol.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_gre_vport_ops; |
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static struct vport *gre_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 net_device *dev; |
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struct vport *vport; |
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int err; |
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vport = ovs_vport_alloc(0, &ovs_gre_vport_ops, parms); |
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if (IS_ERR(vport)) |
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return vport; |
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rtnl_lock(); |
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dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER); |
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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); |
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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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return ERR_PTR(err); |
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} |
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rtnl_unlock(); |
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return vport; |
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} |
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static struct vport *gre_create(const struct vport_parms *parms) |
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{ |
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struct vport *vport; |
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vport = gre_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_gre_vport_ops = { |
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.type = OVS_VPORT_TYPE_GRE, |
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.create = gre_create, |
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.send = dev_queue_xmit, |
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.destroy = ovs_netdev_tunnel_destroy, |
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}; |
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static int __init ovs_gre_tnl_init(void) |
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{ |
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return ovs_vport_ops_register(&ovs_gre_vport_ops); |
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} |
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static void __exit ovs_gre_tnl_exit(void) |
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{ |
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ovs_vport_ops_unregister(&ovs_gre_vport_ops); |
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} |
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module_init(ovs_gre_tnl_init); |
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module_exit(ovs_gre_tnl_exit); |
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MODULE_DESCRIPTION("OVS: GRE switching port"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("vport-type-3");
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