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net/ipv4/ipip.c
18.4 KB
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// SPDX-License-Identifier: GPL-2.0-or-later |
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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. |
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*/ /* 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 <linux/uaccess.h> |
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#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 unsigned 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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/* All the routers (except for Linux) return only * 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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const int type = icmp_hdr(skb)->type; const int code = icmp_hdr(skb)->code; |
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struct ip_tunnel *t; int err = 0; |
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t = ip_tunnel_lookup(itn, skb->dev->ifindex, TUNNEL_NO_KEY, iph->daddr, iph->saddr, 0); if (!t) { err = -ENOENT; goto out; } |
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switch (type) { case ICMP_DEST_UNREACH: switch (code) { case ICMP_SR_FAILED: /* Impossible event. */ goto out; default: /* All others are translated to HOST_UNREACH. * rfc2003 contains "deep thoughts" about NET_UNREACH, * I believe they are just ether pollution. --ANK */ break; } break; case ICMP_TIME_EXCEEDED: if (code != ICMP_EXC_TTL) goto out; break; case ICMP_REDIRECT: break; default: goto out; } |
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|
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if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { |
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ipv4_update_pmtu(skb, net, info, t->parms.link, iph->protocol); |
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goto out; } |
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if (type == ICMP_REDIRECT) { |
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ipv4_redirect(skb, net, t->parms.link, iph->protocol); |
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goto out; } |
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if (t->parms.iph.daddr == 0) { err = -ENOENT; |
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goto out; |
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} |
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|
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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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|
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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; |
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if (!pskb_inet_may_pull(skb)) goto tx_error; |
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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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|
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if (tiph->protocol != ipproto && tiph->protocol != 0) |
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goto tx_error; |
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|
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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) |
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ip_md_tunnel_xmit(skb, dev, ipproto, 0); |
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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_ctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd) |
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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) || p->iph.ihl != 5 || (p->iph.frag_off & htons(~IP_DF))) |
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return -EINVAL; } |
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p->i_key = p->o_key = 0; p->i_flags = p->o_flags = 0; return ip_tunnel_ctl(dev, p, cmd); |
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} |
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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, |
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.ndo_do_ioctl = ip_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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.ndo_tunnel_ctl = ipip_tunnel_ctl, |
23a12b147 ipip: convert to ... |
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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->header_ops = &ip_tunnel_header_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; |
153f09433 ipip: enable lock... |
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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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|
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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[], struct netlink_ext_ack *extack) |
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{ 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, __u32 *fwmark) |
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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]); |
be42da0e1 ipip: add support... |
413 414 |
if (!data[IFLA_IPTUN_PMTUDISC] || nla_get_u8(data[IFLA_IPTUN_PMTUDISC])) parms->iph.frag_off = htons(IP_DF); |
cfc7381b3 ip_tunnel: add co... |
415 416 417 |
if (data[IFLA_IPTUN_COLLECT_METADATA]) *collect_md = true; |
9830ad4c6 ip_tunnel: Allow ... |
418 419 420 |
if (data[IFLA_IPTUN_FWMARK]) *fwmark = nla_get_u32(data[IFLA_IPTUN_FWMARK]); |
be42da0e1 ipip: add support... |
421 |
} |
473ab820d ipip: Setup and T... |
422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 |
/* 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... |
445 |
ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]); |
473ab820d ipip: Setup and T... |
446 447 448 449 |
} if (data[IFLA_IPTUN_ENCAP_DPORT]) { ret = true; |
3e97fa705 gre/ipip: use be1... |
450 |
ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]); |
473ab820d ipip: Setup and T... |
451 452 453 454 |
} return ret; } |
be42da0e1 ipip: add support... |
455 |
static int ipip_newlink(struct net *src_net, struct net_device *dev, |
7a3f4a185 net: add netlink_... |
456 457 |
struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) |
be42da0e1 ipip: add support... |
458 |
{ |
cfc7381b3 ip_tunnel: add co... |
459 |
struct ip_tunnel *t = netdev_priv(dev); |
fd58156e4 IPIP: Use ip-tunn... |
460 |
struct ip_tunnel_parm p; |
473ab820d ipip: Setup and T... |
461 |
struct ip_tunnel_encap ipencap; |
9830ad4c6 ip_tunnel: Allow ... |
462 |
__u32 fwmark = 0; |
473ab820d ipip: Setup and T... |
463 464 |
if (ipip_netlink_encap_parms(data, &ipencap)) { |
473ab820d ipip: Setup and T... |
465 466 467 468 469 |
int err = ip_tunnel_encap_setup(t, &ipencap); if (err < 0) return err; } |
be42da0e1 ipip: add support... |
470 |
|
9830ad4c6 ip_tunnel: Allow ... |
471 472 |
ipip_netlink_parms(data, &p, &t->collect_md, &fwmark); return ip_tunnel_newlink(dev, tb, &p, fwmark); |
be42da0e1 ipip: add support... |
473 474 475 |
} static int ipip_changelink(struct net_device *dev, struct nlattr *tb[], |
ad744b223 net: add netlink_... |
476 477 |
struct nlattr *data[], struct netlink_ext_ack *extack) |
be42da0e1 ipip: add support... |
478 |
{ |
9830ad4c6 ip_tunnel: Allow ... |
479 |
struct ip_tunnel *t = netdev_priv(dev); |
be42da0e1 ipip: add support... |
480 |
struct ip_tunnel_parm p; |
473ab820d ipip: Setup and T... |
481 |
struct ip_tunnel_encap ipencap; |
cfc7381b3 ip_tunnel: add co... |
482 |
bool collect_md; |
9830ad4c6 ip_tunnel: Allow ... |
483 |
__u32 fwmark = t->fwmark; |
473ab820d ipip: Setup and T... |
484 485 |
if (ipip_netlink_encap_parms(data, &ipencap)) { |
473ab820d ipip: Setup and T... |
486 487 488 489 490 |
int err = ip_tunnel_encap_setup(t, &ipencap); if (err < 0) return err; } |
be42da0e1 ipip: add support... |
491 |
|
9830ad4c6 ip_tunnel: Allow ... |
492 |
ipip_netlink_parms(data, &p, &collect_md, &fwmark); |
cfc7381b3 ip_tunnel: add co... |
493 494 |
if (collect_md) return -EINVAL; |
be42da0e1 ipip: add support... |
495 496 497 498 |
if (((dev->flags & IFF_POINTOPOINT) && !p.iph.daddr) || (!(dev->flags & IFF_POINTOPOINT) && p.iph.daddr)) return -EINVAL; |
9830ad4c6 ip_tunnel: Allow ... |
499 |
return ip_tunnel_changelink(dev, tb, &p, fwmark); |
be42da0e1 ipip: add support... |
500 |
} |
0974658da ipip: advertise t... |
501 502 503 504 505 506 507 508 509 510 511 512 513 |
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... |
514 515 |
/* IFLA_IPTUN_PROTO */ nla_total_size(1) + |
befe2aa1b ipip/rtnl: add IF... |
516 517 |
/* IFLA_IPTUN_PMTUDISC */ nla_total_size(1) + |
473ab820d ipip: Setup and T... |
518 519 520 521 522 523 524 525 |
/* 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... |
526 527 |
/* IFLA_IPTUN_COLLECT_METADATA */ nla_total_size(0) + |
9830ad4c6 ip_tunnel: Allow ... |
528 529 |
/* IFLA_IPTUN_FWMARK */ nla_total_size(4) + |
0974658da ipip: advertise t... |
530 531 532 533 534 535 536 537 538 |
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... |
539 540 |
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... |
541 |
nla_put_u8(skb, IFLA_IPTUN_TTL, parm->iph.ttl) || |
befe2aa1b ipip/rtnl: add IF... |
542 |
nla_put_u8(skb, IFLA_IPTUN_TOS, parm->iph.tos) || |
1b69e7e6c ipip: support MPL... |
543 |
nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->iph.protocol) || |
befe2aa1b ipip/rtnl: add IF... |
544 |
nla_put_u8(skb, IFLA_IPTUN_PMTUDISC, |
9830ad4c6 ip_tunnel: Allow ... |
545 546 |
!!(parm->iph.frag_off & htons(IP_DF))) || nla_put_u32(skb, IFLA_IPTUN_FWMARK, tunnel->fwmark)) |
0974658da ipip: advertise t... |
547 |
goto nla_put_failure; |
473ab820d ipip: Setup and T... |
548 549 550 |
if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE, tunnel->encap.type) || |
3e97fa705 gre/ipip: use be1... |
551 552 553 554 |
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... |
555 |
nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS, |
e1b2cb655 fou: Fix typo in ... |
556 |
tunnel->encap.flags)) |
473ab820d ipip: Setup and T... |
557 |
goto nla_put_failure; |
cfc7381b3 ip_tunnel: add co... |
558 559 560 |
if (tunnel->collect_md) if (nla_put_flag(skb, IFLA_IPTUN_COLLECT_METADATA)) goto nla_put_failure; |
0974658da ipip: advertise t... |
561 562 563 564 565 |
return 0; nla_put_failure: return -EMSGSIZE; } |
be42da0e1 ipip: add support... |
566 567 568 569 570 571 |
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... |
572 |
[IFLA_IPTUN_PROTO] = { .type = NLA_U8 }, |
be42da0e1 ipip: add support... |
573 |
[IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 }, |
473ab820d ipip: Setup and T... |
574 575 576 577 |
[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... |
578 |
[IFLA_IPTUN_COLLECT_METADATA] = { .type = NLA_FLAG }, |
9830ad4c6 ip_tunnel: Allow ... |
579 |
[IFLA_IPTUN_FWMARK] = { .type = NLA_U32 }, |
be42da0e1 ipip: add support... |
580 |
}; |
0974658da ipip: advertise t... |
581 582 583 |
static struct rtnl_link_ops ipip_link_ops __read_mostly = { .kind = "ipip", .maxtype = IFLA_IPTUN_MAX, |
be42da0e1 ipip: add support... |
584 |
.policy = ipip_policy, |
0974658da ipip: advertise t... |
585 |
.priv_size = sizeof(struct ip_tunnel), |
be42da0e1 ipip: add support... |
586 |
.setup = ipip_tunnel_setup, |
1b69e7e6c ipip: support MPL... |
587 |
.validate = ipip_tunnel_validate, |
be42da0e1 ipip: add support... |
588 589 |
.newlink = ipip_newlink, .changelink = ipip_changelink, |
fd58156e4 IPIP: Use ip-tunn... |
590 |
.dellink = ip_tunnel_dellink, |
0974658da ipip: advertise t... |
591 592 |
.get_size = ipip_get_size, .fill_info = ipip_fill_info, |
1728d4fab tunnels: advertis... |
593 |
.get_link_net = ip_tunnel_get_link_net, |
0974658da ipip: advertise t... |
594 |
}; |
6dcd814bd net: struct xfrm_... |
595 |
static struct xfrm_tunnel ipip_handler __read_mostly = { |
1da177e4c Linux-2.6.12-rc2 |
596 597 |
.handler = ipip_rcv, .err_handler = ipip_err, |
d2acc3479 [INET]: Introduce... |
598 |
.priority = 1, |
1da177e4c Linux-2.6.12-rc2 |
599 |
}; |
1b69e7e6c ipip: support MPL... |
600 601 602 603 604 605 606 |
#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... |
607 |
static int __net_init ipip_init_net(struct net *net) |
10dc4c7bb [IPIP]: Introduce... |
608 |
{ |
fd58156e4 IPIP: Use ip-tunn... |
609 |
return ip_tunnel_init_net(net, ipip_net_id, &ipip_link_ops, "tunl0"); |
10dc4c7bb [IPIP]: Introduce... |
610 |
} |
64bc17811 ipv4: speedup ipv... |
611 |
static void __net_exit ipip_exit_batch_net(struct list_head *list_net) |
10dc4c7bb [IPIP]: Introduce... |
612 |
{ |
64bc17811 ipv4: speedup ipv... |
613 |
ip_tunnel_delete_nets(list_net, ipip_net_id, &ipip_link_ops); |
10dc4c7bb [IPIP]: Introduce... |
614 615 616 617 |
} static struct pernet_operations ipip_net_ops = { .init = ipip_init_net, |
64bc17811 ipv4: speedup ipv... |
618 |
.exit_batch = ipip_exit_batch_net, |
86de8a631 net: Simplify ipi... |
619 |
.id = &ipip_net_id, |
fd58156e4 IPIP: Use ip-tunn... |
620 |
.size = sizeof(struct ip_tunnel_net), |
10dc4c7bb [IPIP]: Introduce... |
621 |
}; |
1da177e4c Linux-2.6.12-rc2 |
622 623 624 |
static int __init ipip_init(void) { int err; |
1b69e7e6c ipip: support MPL... |
625 626 |
pr_info("ipip: IPv4 and MPLS over IPv4 tunneling driver "); |
1da177e4c Linux-2.6.12-rc2 |
627 |
|
d5aa407f5 tunnels: fix netn... |
628 629 630 631 632 |
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... |
633 634 |
pr_info("%s: can't register tunnel ", __func__); |
1b69e7e6c ipip: support MPL... |
635 636 637 638 639 640 641 642 |
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 |
643 |
} |
1b69e7e6c ipip: support MPL... |
644 |
#endif |
0974658da ipip: advertise t... |
645 646 647 648 649 |
err = rtnl_link_register(&ipip_link_ops); if (err < 0) goto rtnl_link_failed; out: |
1da177e4c Linux-2.6.12-rc2 |
650 |
return err; |
0974658da ipip: advertise t... |
651 652 |
rtnl_link_failed: |
1b69e7e6c ipip: support MPL... |
653 |
#if IS_ENABLED(CONFIG_MPLS) |
57ebc8f08 net: ipip: fix wr... |
654 |
xfrm4_tunnel_deregister(&mplsip_handler, AF_MPLS); |
1b69e7e6c ipip: support MPL... |
655 656 657 |
xfrm_tunnel_mplsip_failed: #endif |
0974658da ipip: advertise t... |
658 |
xfrm4_tunnel_deregister(&ipip_handler, AF_INET); |
1b69e7e6c ipip: support MPL... |
659 |
xfrm_tunnel_ipip_failed: |
0974658da ipip: advertise t... |
660 661 |
unregister_pernet_device(&ipip_net_ops); goto out; |
1da177e4c Linux-2.6.12-rc2 |
662 663 664 665 |
} static void __exit ipip_fini(void) { |
0974658da ipip: advertise t... |
666 |
rtnl_link_unregister(&ipip_link_ops); |
c0d56408e [IPSEC]: Changing... |
667 |
if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET)) |
058bd4d2a net: Convert prin... |
668 669 |
pr_info("%s: can't deregister tunnel ", __func__); |
1b69e7e6c ipip: support MPL... |
670 671 672 673 674 |
#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... |
675 |
unregister_pernet_device(&ipip_net_ops); |
1da177e4c Linux-2.6.12-rc2 |
676 677 678 679 680 |
} module_init(ipip_init); module_exit(ipip_fini); MODULE_LICENSE("GPL"); |
f98f89a01 net: tunnels - en... |
681 |
MODULE_ALIAS_RTNL_LINK("ipip"); |
8909c9ad8 net: don't allow ... |
682 |
MODULE_ALIAS_NETDEV("tunl0"); |