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net/ipv4/ipip.c
17.9 KB
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/* |
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* Linux NET3: IP/IP protocol decoder. |
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* |
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* Authors: * Sam Lantinga (slouken@cs.ucdavis.edu) 02/01/95 * * Fixes: * Alan Cox : Merged and made usable non modular (its so tiny its silly as * a module taking up 2 pages). * Alan Cox : Fixed bug with 1.3.18 and IPIP not working (now needs to set skb->h.iph) * to keep ip_forward happy. * Alan Cox : More fixes for 1.3.21, and firewall fix. Maybe this will work soon 8). * Kai Schulte : Fixed #defines for IP_FIREWALL->FIREWALL * David Woodhouse : Perform some basic ICMP handling. * IPIP Routing without decapsulation. * Carlos Picoto : GRE over IP support * Alexey Kuznetsov: Reworked. Really, now it is truncated version of ipv4/ip_gre.c. * I do not want to merge them together. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ /* tunnel.c: an IP tunnel driver The purpose of this driver is to provide an IP tunnel through which you can tunnel network traffic transparently across subnets. This was written by looking at Nick Holloway's dummy driver Thanks for the great code! -Sam Lantinga (slouken@cs.ucdavis.edu) 02/01/95 |
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Minor tweaks: Cleaned up the code a little and added some pre-1.3.0 tweaks. dev->hard_header/hard_header_len changed to use no headers. Comments/bracketing tweaked. Made the tunnels use dev->name not tunnel: when error reporting. Added tx_dropped stat |
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-Alan Cox (alan@lxorguk.ukuu.org.uk) 21 March 95 |
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Reworked: Changed to tunnel to destination gateway in addition to the tunnel's pointopoint address Almost completely rewritten Note: There is currently no firewall or ICMP handling done. -Sam Lantinga (slouken@cs.ucdavis.edu) 02/13/96 |
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*/ /* Things I wish I had known when writing the tunnel driver: When the tunnel_xmit() function is called, the skb contains the packet to be sent (plus a great deal of extra info), and dev contains the tunnel device that _we_ are. When we are passed a packet, we are expected to fill in the source address with our source IP address. What is the proper way to allocate, copy and free a buffer? After you allocate it, it is a "0 length" chunk of memory starting at zero. If you want to add headers to the buffer later, you'll have to call "skb_reserve(skb, amount)" with the amount of memory you want reserved. Then, you call "skb_put(skb, amount)" with the amount of space you want in the buffer. skb_put() returns a pointer to the top (#0) of that buffer. skb->len is set to the amount of space you have "allocated" with skb_put(). You can then write up to skb->len bytes to that buffer. If you need more, you can call skb_put() again with the additional amount of space you need. You can |
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find out how much more space you can allocate by calling |
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"skb_tailroom(skb)". Now, to add header space, call "skb_push(skb, header_len)". This creates space at the beginning of the buffer and returns a pointer to this new space. If later you need to strip a header from a buffer, call "skb_pull(skb, header_len)". skb_headroom() will return how much space is left at the top of the buffer (before the main data). Remember, this headroom space must be reserved before the skb_put() function is called. */ /* This version of net/ipv4/ipip.c is cloned of net/ipv4/ip_gre.c For comments look at net/ipv4/ip_gre.c --ANK */ |
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#include <linux/capability.h> |
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#include <linux/module.h> #include <linux/types.h> |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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#include <asm/uaccess.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <linux/in.h> #include <linux/tcp.h> #include <linux/udp.h> #include <linux/if_arp.h> |
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#include <linux/init.h> #include <linux/netfilter_ipv4.h> |
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#include <linux/if_ether.h> |
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#include <net/sock.h> #include <net/ip.h> #include <net/icmp.h> |
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#include <net/ip_tunnels.h> |
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#include <net/inet_ecn.h> #include <net/xfrm.h> |
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#include <net/net_namespace.h> #include <net/netns/generic.h> |
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#include <net/dst_metadata.h> |
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|
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static bool log_ecn_error = true; module_param(log_ecn_error, bool, 0644); MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN"); |
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static int ipip_net_id __read_mostly; |
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|
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static int ipip_tunnel_init(struct net_device *dev); |
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static struct rtnl_link_ops ipip_link_ops __read_mostly; |
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|
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static int ipip_err(struct sk_buff *skb, u32 info) |
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{ |
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|
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/* All the routers (except for Linux) return only |
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8 bytes of packet payload. It means, that precise relaying of ICMP in the real Internet is absolutely infeasible. */ |
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struct net *net = dev_net(skb->dev); struct ip_tunnel_net *itn = net_generic(net, ipip_net_id); |
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const struct iphdr *iph = (const struct iphdr *)skb->data; |
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struct ip_tunnel *t; |
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int err; |
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const int type = icmp_hdr(skb)->type; const int code = icmp_hdr(skb)->code; |
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|
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err = -ENOENT; |
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t = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY, iph->daddr, iph->saddr, 0); |
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if (!t) |
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goto out; if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { ipv4_update_pmtu(skb, dev_net(skb->dev), info, |
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t->parms.link, 0, iph->protocol, 0); |
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err = 0; goto out; } |
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if (type == ICMP_REDIRECT) { |
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ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0, |
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iph->protocol, 0); |
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err = 0; goto out; } |
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if (t->parms.iph.daddr == 0) |
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goto out; |
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err = 0; |
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if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED) goto out; |
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if (time_before(jiffies, t->err_time + IPTUNNEL_ERR_TIMEO)) |
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t->err_count++; else t->err_count = 1; t->err_time = jiffies; |
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|
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out: |
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return err; |
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} |
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static const struct tnl_ptk_info ipip_tpi = { |
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/* no tunnel info required for ipip. */ .proto = htons(ETH_P_IP), }; |
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#if IS_ENABLED(CONFIG_MPLS) static const struct tnl_ptk_info mplsip_tpi = { /* no tunnel info required for mplsip. */ .proto = htons(ETH_P_MPLS_UC), }; #endif static int ipip_tunnel_rcv(struct sk_buff *skb, u8 ipproto) |
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{ |
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struct net *net = dev_net(skb->dev); struct ip_tunnel_net *itn = net_generic(net, ipip_net_id); |
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struct metadata_dst *tun_dst = NULL; |
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struct ip_tunnel *tunnel; |
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const struct iphdr *iph; |
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iph = ip_hdr(skb); |
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tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY, iph->saddr, iph->daddr, 0); if (tunnel) { |
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const struct tnl_ptk_info *tpi; if (tunnel->parms.iph.protocol != ipproto && tunnel->parms.iph.protocol != 0) goto drop; |
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if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) goto drop; |
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#if IS_ENABLED(CONFIG_MPLS) if (ipproto == IPPROTO_MPLS) tpi = &mplsip_tpi; else #endif tpi = &ipip_tpi; if (iptunnel_pull_header(skb, 0, tpi->proto, false)) |
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goto drop; |
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if (tunnel->collect_md) { tun_dst = ip_tun_rx_dst(skb, 0, 0, 0); if (!tun_dst) return 0; } return ip_tunnel_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); |
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} |
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|
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return -1; |
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drop: kfree_skb(skb); return 0; |
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} |
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static int ipip_rcv(struct sk_buff *skb) { return ipip_tunnel_rcv(skb, IPPROTO_IPIP); } #if IS_ENABLED(CONFIG_MPLS) static int mplsip_rcv(struct sk_buff *skb) { return ipip_tunnel_rcv(skb, IPPROTO_MPLS); } #endif |
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/* * This function assumes it is being called from dev_queue_xmit() * and that skb is filled properly by that function. */ |
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static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) |
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{ |
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struct ip_tunnel *tunnel = netdev_priv(dev); |
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const struct iphdr *tiph = &tunnel->parms.iph; |
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u8 ipproto; switch (skb->protocol) { case htons(ETH_P_IP): ipproto = IPPROTO_IPIP; break; #if IS_ENABLED(CONFIG_MPLS) case htons(ETH_P_MPLS_UC): ipproto = IPPROTO_MPLS; break; #endif default: goto tx_error; } |
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if (tiph->protocol != ipproto && tiph->protocol != 0) |
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goto tx_error; |
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if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP4)) |
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goto tx_error; |
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skb_set_inner_ipproto(skb, ipproto); |
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if (tunnel->collect_md) ip_md_tunnel_xmit(skb, dev, ipproto); else ip_tunnel_xmit(skb, dev, tiph, ipproto); |
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return NETDEV_TX_OK; |
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tx_error: |
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kfree_skb(skb); |
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dev->stats.tx_errors++; |
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return NETDEV_TX_OK; |
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} |
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static bool ipip_tunnel_ioctl_verify_protocol(u8 ipproto) { switch (ipproto) { case 0: case IPPROTO_IPIP: #if IS_ENABLED(CONFIG_MPLS) case IPPROTO_MPLS: #endif return true; } return false; } |
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static int |
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ipip_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
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{ int err = 0; struct ip_tunnel_parm p; |
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if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) return -EFAULT; |
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|
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if (cmd == SIOCADDTUNNEL || cmd == SIOCCHGTUNNEL) { |
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if (p.iph.version != 4 || !ipip_tunnel_ioctl_verify_protocol(p.iph.protocol) || |
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p.iph.ihl != 5 || (p.iph.frag_off&htons(~IP_DF))) return -EINVAL; } |
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p.i_key = p.o_key = 0; p.i_flags = p.o_flags = 0; |
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err = ip_tunnel_ioctl(dev, &p, cmd); if (err) return err; if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p))) return -EFAULT; |
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return 0; } |
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static const struct net_device_ops ipip_netdev_ops = { |
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.ndo_init = ipip_tunnel_init, .ndo_uninit = ip_tunnel_uninit, |
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.ndo_start_xmit = ipip_tunnel_xmit, .ndo_do_ioctl = ipip_tunnel_ioctl, |
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.ndo_change_mtu = ip_tunnel_change_mtu, .ndo_get_stats64 = ip_tunnel_get_stats64, |
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.ndo_get_iflink = ip_tunnel_get_iflink, |
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}; |
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#define IPIP_FEATURES (NETIF_F_SG | \ NETIF_F_FRAGLIST | \ NETIF_F_HIGHDMA | \ |
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NETIF_F_GSO_SOFTWARE | \ |
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NETIF_F_HW_CSUM) |
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static void ipip_tunnel_setup(struct net_device *dev) { |
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dev->netdev_ops = &ipip_netdev_ops; |
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dev->type = ARPHRD_TUNNEL; |
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dev->flags = IFF_NOARP; |
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dev->addr_len = 4; |
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dev->features |= NETIF_F_LLTX; |
028758788 net: better IFF_X... |
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netif_keep_dst(dev); |
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dev->features |= IPIP_FEATURES; dev->hw_features |= IPIP_FEATURES; |
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ip_tunnel_setup(dev, ipip_net_id); |
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} |
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static int ipip_tunnel_init(struct net_device *dev) |
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{ |
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struct ip_tunnel *tunnel = netdev_priv(dev); |
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memcpy(dev->dev_addr, &tunnel->parms.iph.saddr, 4); memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4); |
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tunnel->tun_hlen = 0; tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen; |
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return ip_tunnel_init(dev); |
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} |
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static int ipip_tunnel_validate(struct nlattr *tb[], struct nlattr *data[]) { u8 proto; if (!data || !data[IFLA_IPTUN_PROTO]) return 0; proto = nla_get_u8(data[IFLA_IPTUN_PROTO]); if (proto != IPPROTO_IPIP && proto != IPPROTO_MPLS && proto != 0) return -EINVAL; return 0; } |
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static void ipip_netlink_parms(struct nlattr *data[], |
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struct ip_tunnel_parm *parms, bool *collect_md) |
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{ memset(parms, 0, sizeof(*parms)); parms->iph.version = 4; parms->iph.protocol = IPPROTO_IPIP; parms->iph.ihl = 5; |
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*collect_md = false; |
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if (!data) return; if (data[IFLA_IPTUN_LINK]) parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]); if (data[IFLA_IPTUN_LOCAL]) |
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parms->iph.saddr = nla_get_in_addr(data[IFLA_IPTUN_LOCAL]); |
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if (data[IFLA_IPTUN_REMOTE]) |
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parms->iph.daddr = nla_get_in_addr(data[IFLA_IPTUN_REMOTE]); |
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if (data[IFLA_IPTUN_TTL]) { parms->iph.ttl = nla_get_u8(data[IFLA_IPTUN_TTL]); if (parms->iph.ttl) parms->iph.frag_off = htons(IP_DF); } if (data[IFLA_IPTUN_TOS]) parms->iph.tos = nla_get_u8(data[IFLA_IPTUN_TOS]); |
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if (data[IFLA_IPTUN_PROTO]) parms->iph.protocol = nla_get_u8(data[IFLA_IPTUN_PROTO]); |
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if (!data[IFLA_IPTUN_PMTUDISC] || nla_get_u8(data[IFLA_IPTUN_PMTUDISC])) parms->iph.frag_off = htons(IP_DF); |
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if (data[IFLA_IPTUN_COLLECT_METADATA]) *collect_md = true; |
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} |
473ab820d ipip: Setup and T... |
409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 |
/* This function returns true when ENCAP attributes are present in the nl msg */ static bool ipip_netlink_encap_parms(struct nlattr *data[], struct ip_tunnel_encap *ipencap) { bool ret = false; memset(ipencap, 0, sizeof(*ipencap)); if (!data) return ret; if (data[IFLA_IPTUN_ENCAP_TYPE]) { ret = true; ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]); } if (data[IFLA_IPTUN_ENCAP_FLAGS]) { ret = true; ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]); } if (data[IFLA_IPTUN_ENCAP_SPORT]) { ret = true; |
3e97fa705 gre/ipip: use be1... |
432 |
ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]); |
473ab820d ipip: Setup and T... |
433 434 435 436 |
} if (data[IFLA_IPTUN_ENCAP_DPORT]) { ret = true; |
3e97fa705 gre/ipip: use be1... |
437 |
ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]); |
473ab820d ipip: Setup and T... |
438 439 440 441 |
} return ret; } |
be42da0e1 ipip: add support... |
442 443 444 |
static int ipip_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { |
cfc7381b3 ip_tunnel: add co... |
445 |
struct ip_tunnel *t = netdev_priv(dev); |
fd58156e4 IPIP: Use ip-tunn... |
446 |
struct ip_tunnel_parm p; |
473ab820d ipip: Setup and T... |
447 448 449 |
struct ip_tunnel_encap ipencap; if (ipip_netlink_encap_parms(data, &ipencap)) { |
473ab820d ipip: Setup and T... |
450 451 452 453 454 |
int err = ip_tunnel_encap_setup(t, &ipencap); if (err < 0) return err; } |
be42da0e1 ipip: add support... |
455 |
|
cfc7381b3 ip_tunnel: add co... |
456 |
ipip_netlink_parms(data, &p, &t->collect_md); |
fd58156e4 IPIP: Use ip-tunn... |
457 |
return ip_tunnel_newlink(dev, tb, &p); |
be42da0e1 ipip: add support... |
458 459 460 461 462 |
} static int ipip_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[]) { |
be42da0e1 ipip: add support... |
463 |
struct ip_tunnel_parm p; |
473ab820d ipip: Setup and T... |
464 |
struct ip_tunnel_encap ipencap; |
cfc7381b3 ip_tunnel: add co... |
465 |
bool collect_md; |
473ab820d ipip: Setup and T... |
466 467 468 469 470 471 472 473 |
if (ipip_netlink_encap_parms(data, &ipencap)) { struct ip_tunnel *t = netdev_priv(dev); int err = ip_tunnel_encap_setup(t, &ipencap); if (err < 0) return err; } |
be42da0e1 ipip: add support... |
474 |
|
cfc7381b3 ip_tunnel: add co... |
475 476 477 |
ipip_netlink_parms(data, &p, &collect_md); if (collect_md) return -EINVAL; |
be42da0e1 ipip: add support... |
478 479 480 481 |
if (((dev->flags & IFF_POINTOPOINT) && !p.iph.daddr) || (!(dev->flags & IFF_POINTOPOINT) && p.iph.daddr)) return -EINVAL; |
fd58156e4 IPIP: Use ip-tunn... |
482 |
return ip_tunnel_changelink(dev, tb, &p); |
be42da0e1 ipip: add support... |
483 |
} |
0974658da ipip: advertise t... |
484 485 486 487 488 489 490 491 492 493 494 495 496 |
static size_t ipip_get_size(const struct net_device *dev) { return /* IFLA_IPTUN_LINK */ nla_total_size(4) + /* IFLA_IPTUN_LOCAL */ nla_total_size(4) + /* IFLA_IPTUN_REMOTE */ nla_total_size(4) + /* IFLA_IPTUN_TTL */ nla_total_size(1) + /* IFLA_IPTUN_TOS */ nla_total_size(1) + |
1b69e7e6c ipip: support MPL... |
497 498 |
/* IFLA_IPTUN_PROTO */ nla_total_size(1) + |
befe2aa1b ipip/rtnl: add IF... |
499 500 |
/* IFLA_IPTUN_PMTUDISC */ nla_total_size(1) + |
473ab820d ipip: Setup and T... |
501 502 503 504 505 506 507 508 |
/* IFLA_IPTUN_ENCAP_TYPE */ nla_total_size(2) + /* IFLA_IPTUN_ENCAP_FLAGS */ nla_total_size(2) + /* IFLA_IPTUN_ENCAP_SPORT */ nla_total_size(2) + /* IFLA_IPTUN_ENCAP_DPORT */ nla_total_size(2) + |
cfc7381b3 ip_tunnel: add co... |
509 510 |
/* IFLA_IPTUN_COLLECT_METADATA */ nla_total_size(0) + |
0974658da ipip: advertise t... |
511 512 513 514 515 516 517 518 519 |
0; } static int ipip_fill_info(struct sk_buff *skb, const struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); struct ip_tunnel_parm *parm = &tunnel->parms; if (nla_put_u32(skb, IFLA_IPTUN_LINK, parm->link) || |
930345ea6 netlink: implemen... |
520 521 |
nla_put_in_addr(skb, IFLA_IPTUN_LOCAL, parm->iph.saddr) || nla_put_in_addr(skb, IFLA_IPTUN_REMOTE, parm->iph.daddr) || |
0974658da ipip: advertise t... |
522 |
nla_put_u8(skb, IFLA_IPTUN_TTL, parm->iph.ttl) || |
befe2aa1b ipip/rtnl: add IF... |
523 |
nla_put_u8(skb, IFLA_IPTUN_TOS, parm->iph.tos) || |
1b69e7e6c ipip: support MPL... |
524 |
nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->iph.protocol) || |
befe2aa1b ipip/rtnl: add IF... |
525 526 |
nla_put_u8(skb, IFLA_IPTUN_PMTUDISC, !!(parm->iph.frag_off & htons(IP_DF)))) |
0974658da ipip: advertise t... |
527 |
goto nla_put_failure; |
473ab820d ipip: Setup and T... |
528 529 530 |
if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE, tunnel->encap.type) || |
3e97fa705 gre/ipip: use be1... |
531 532 533 534 |
nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT, tunnel->encap.sport) || nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT, tunnel->encap.dport) || |
473ab820d ipip: Setup and T... |
535 |
nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS, |
e1b2cb655 fou: Fix typo in ... |
536 |
tunnel->encap.flags)) |
473ab820d ipip: Setup and T... |
537 |
goto nla_put_failure; |
cfc7381b3 ip_tunnel: add co... |
538 539 540 |
if (tunnel->collect_md) if (nla_put_flag(skb, IFLA_IPTUN_COLLECT_METADATA)) goto nla_put_failure; |
0974658da ipip: advertise t... |
541 542 543 544 545 |
return 0; nla_put_failure: return -EMSGSIZE; } |
be42da0e1 ipip: add support... |
546 547 548 549 550 551 |
static const struct nla_policy ipip_policy[IFLA_IPTUN_MAX + 1] = { [IFLA_IPTUN_LINK] = { .type = NLA_U32 }, [IFLA_IPTUN_LOCAL] = { .type = NLA_U32 }, [IFLA_IPTUN_REMOTE] = { .type = NLA_U32 }, [IFLA_IPTUN_TTL] = { .type = NLA_U8 }, [IFLA_IPTUN_TOS] = { .type = NLA_U8 }, |
1b69e7e6c ipip: support MPL... |
552 |
[IFLA_IPTUN_PROTO] = { .type = NLA_U8 }, |
be42da0e1 ipip: add support... |
553 |
[IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 }, |
473ab820d ipip: Setup and T... |
554 555 556 557 |
[IFLA_IPTUN_ENCAP_TYPE] = { .type = NLA_U16 }, [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NLA_U16 }, [IFLA_IPTUN_ENCAP_SPORT] = { .type = NLA_U16 }, [IFLA_IPTUN_ENCAP_DPORT] = { .type = NLA_U16 }, |
cfc7381b3 ip_tunnel: add co... |
558 |
[IFLA_IPTUN_COLLECT_METADATA] = { .type = NLA_FLAG }, |
be42da0e1 ipip: add support... |
559 |
}; |
0974658da ipip: advertise t... |
560 561 562 |
static struct rtnl_link_ops ipip_link_ops __read_mostly = { .kind = "ipip", .maxtype = IFLA_IPTUN_MAX, |
be42da0e1 ipip: add support... |
563 |
.policy = ipip_policy, |
0974658da ipip: advertise t... |
564 |
.priv_size = sizeof(struct ip_tunnel), |
be42da0e1 ipip: add support... |
565 |
.setup = ipip_tunnel_setup, |
1b69e7e6c ipip: support MPL... |
566 |
.validate = ipip_tunnel_validate, |
be42da0e1 ipip: add support... |
567 568 |
.newlink = ipip_newlink, .changelink = ipip_changelink, |
fd58156e4 IPIP: Use ip-tunn... |
569 |
.dellink = ip_tunnel_dellink, |
0974658da ipip: advertise t... |
570 571 |
.get_size = ipip_get_size, .fill_info = ipip_fill_info, |
1728d4fab tunnels: advertis... |
572 |
.get_link_net = ip_tunnel_get_link_net, |
0974658da ipip: advertise t... |
573 |
}; |
6dcd814bd net: struct xfrm_... |
574 |
static struct xfrm_tunnel ipip_handler __read_mostly = { |
1da177e4c Linux-2.6.12-rc2 |
575 576 |
.handler = ipip_rcv, .err_handler = ipip_err, |
d2acc3479 [INET]: Introduce... |
577 |
.priority = 1, |
1da177e4c Linux-2.6.12-rc2 |
578 |
}; |
1b69e7e6c ipip: support MPL... |
579 580 581 582 583 584 585 |
#if IS_ENABLED(CONFIG_MPLS) static struct xfrm_tunnel mplsip_handler __read_mostly = { .handler = mplsip_rcv, .err_handler = ipip_err, .priority = 1, }; #endif |
2c8c1e729 net: spread __net... |
586 |
static int __net_init ipip_init_net(struct net *net) |
10dc4c7bb [IPIP]: Introduce... |
587 |
{ |
fd58156e4 IPIP: Use ip-tunn... |
588 |
return ip_tunnel_init_net(net, ipip_net_id, &ipip_link_ops, "tunl0"); |
10dc4c7bb [IPIP]: Introduce... |
589 |
} |
2c8c1e729 net: spread __net... |
590 |
static void __net_exit ipip_exit_net(struct net *net) |
10dc4c7bb [IPIP]: Introduce... |
591 |
{ |
fd58156e4 IPIP: Use ip-tunn... |
592 |
struct ip_tunnel_net *itn = net_generic(net, ipip_net_id); |
6c742e714 ipip: add x-netns... |
593 |
ip_tunnel_delete_net(itn, &ipip_link_ops); |
10dc4c7bb [IPIP]: Introduce... |
594 595 596 597 598 |
} static struct pernet_operations ipip_net_ops = { .init = ipip_init_net, .exit = ipip_exit_net, |
86de8a631 net: Simplify ipi... |
599 |
.id = &ipip_net_id, |
fd58156e4 IPIP: Use ip-tunn... |
600 |
.size = sizeof(struct ip_tunnel_net), |
10dc4c7bb [IPIP]: Introduce... |
601 |
}; |
1da177e4c Linux-2.6.12-rc2 |
602 603 604 |
static int __init ipip_init(void) { int err; |
1b69e7e6c ipip: support MPL... |
605 606 |
pr_info("ipip: IPv4 and MPLS over IPv4 tunneling driver "); |
1da177e4c Linux-2.6.12-rc2 |
607 |
|
d5aa407f5 tunnels: fix netn... |
608 609 610 611 612 |
err = register_pernet_device(&ipip_net_ops); if (err < 0) return err; err = xfrm4_tunnel_register(&ipip_handler, AF_INET); if (err < 0) { |
058bd4d2a net: Convert prin... |
613 614 |
pr_info("%s: can't register tunnel ", __func__); |
1b69e7e6c ipip: support MPL... |
615 616 617 618 619 620 621 622 |
goto xfrm_tunnel_ipip_failed; } #if IS_ENABLED(CONFIG_MPLS) err = xfrm4_tunnel_register(&mplsip_handler, AF_MPLS); if (err < 0) { pr_info("%s: can't register tunnel ", __func__); goto xfrm_tunnel_mplsip_failed; |
1da177e4c Linux-2.6.12-rc2 |
623 |
} |
1b69e7e6c ipip: support MPL... |
624 |
#endif |
0974658da ipip: advertise t... |
625 626 627 628 629 |
err = rtnl_link_register(&ipip_link_ops); if (err < 0) goto rtnl_link_failed; out: |
1da177e4c Linux-2.6.12-rc2 |
630 |
return err; |
0974658da ipip: advertise t... |
631 632 |
rtnl_link_failed: |
1b69e7e6c ipip: support MPL... |
633 634 635 636 637 |
#if IS_ENABLED(CONFIG_MPLS) xfrm4_tunnel_deregister(&mplsip_handler, AF_INET); xfrm_tunnel_mplsip_failed: #endif |
0974658da ipip: advertise t... |
638 |
xfrm4_tunnel_deregister(&ipip_handler, AF_INET); |
1b69e7e6c ipip: support MPL... |
639 |
xfrm_tunnel_ipip_failed: |
0974658da ipip: advertise t... |
640 641 |
unregister_pernet_device(&ipip_net_ops); goto out; |
1da177e4c Linux-2.6.12-rc2 |
642 643 644 645 |
} static void __exit ipip_fini(void) { |
0974658da ipip: advertise t... |
646 |
rtnl_link_unregister(&ipip_link_ops); |
c0d56408e [IPSEC]: Changing... |
647 |
if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET)) |
058bd4d2a net: Convert prin... |
648 649 |
pr_info("%s: can't deregister tunnel ", __func__); |
1b69e7e6c ipip: support MPL... |
650 651 652 653 654 |
#if IS_ENABLED(CONFIG_MPLS) if (xfrm4_tunnel_deregister(&mplsip_handler, AF_MPLS)) pr_info("%s: can't deregister tunnel ", __func__); #endif |
86de8a631 net: Simplify ipi... |
655 |
unregister_pernet_device(&ipip_net_ops); |
1da177e4c Linux-2.6.12-rc2 |
656 657 658 659 660 |
} module_init(ipip_init); module_exit(ipip_fini); MODULE_LICENSE("GPL"); |
f98f89a01 net: tunnels - en... |
661 |
MODULE_ALIAS_RTNL_LINK("ipip"); |
8909c9ad8 net: don't allow ... |
662 |
MODULE_ALIAS_NETDEV("tunl0"); |