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net/ipv6/ip6_gre.c
58.2 KB
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// SPDX-License-Identifier: GPL-2.0-or-later |
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/* * GRE over IPv6 protocol decoder. * * Authors: Dmitry Kozlov (xeb@mail.ru) |
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*/ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/capability.h> #include <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/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/in6.h> #include <linux/inetdevice.h> #include <linux/igmp.h> #include <linux/netfilter_ipv4.h> #include <linux/etherdevice.h> #include <linux/if_ether.h> #include <linux/hash.h> #include <linux/if_tunnel.h> #include <linux/ip6_tunnel.h> #include <net/sock.h> #include <net/ip.h> |
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#include <net/ip_tunnels.h> |
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#include <net/icmp.h> #include <net/protocol.h> #include <net/addrconf.h> #include <net/arp.h> #include <net/checksum.h> #include <net/dsfield.h> #include <net/inet_ecn.h> #include <net/xfrm.h> #include <net/net_namespace.h> #include <net/netns/generic.h> #include <net/rtnetlink.h> #include <net/ipv6.h> #include <net/ip6_fib.h> #include <net/ip6_route.h> #include <net/ip6_tunnel.h> |
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#include <net/gre.h> |
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#include <net/erspan.h> |
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#include <net/dst_metadata.h> |
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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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#define IP6_GRE_HASH_SIZE_SHIFT 5 #define IP6_GRE_HASH_SIZE (1 << IP6_GRE_HASH_SIZE_SHIFT) |
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|
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static unsigned int ip6gre_net_id __read_mostly; |
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struct ip6gre_net { |
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struct ip6_tnl __rcu *tunnels[4][IP6_GRE_HASH_SIZE]; |
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struct ip6_tnl __rcu *collect_md_tun; |
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struct ip6_tnl __rcu *collect_md_tun_erspan; |
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struct net_device *fb_tunnel_dev; }; static struct rtnl_link_ops ip6gre_link_ops __read_mostly; |
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static struct rtnl_link_ops ip6gre_tap_ops __read_mostly; |
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static struct rtnl_link_ops ip6erspan_tap_ops __read_mostly; |
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static int ip6gre_tunnel_init(struct net_device *dev); static void ip6gre_tunnel_setup(struct net_device *dev); static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t); static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu); |
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static void ip6erspan_tnl_link_config(struct ip6_tnl *t, int set_mtu); |
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/* Tunnel hash table */ /* 4 hash tables: 3: (remote,local) 2: (remote,*) 1: (*,local) 0: (*,*) We require exact key match i.e. if a key is present in packet it will match only tunnel with the same key; if it is not present, it will match only keyless tunnel. All keysless packets, if not matched configured keyless tunnels will match fallback tunnel. */ |
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#define HASH_KEY(key) (((__force u32)key^((__force u32)key>>4))&(IP6_GRE_HASH_SIZE - 1)) |
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static u32 HASH_ADDR(const struct in6_addr *addr) { u32 hash = ipv6_addr_hash(addr); |
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return hash_32(hash, IP6_GRE_HASH_SIZE_SHIFT); |
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} #define tunnels_r_l tunnels[3] #define tunnels_r tunnels[2] #define tunnels_l tunnels[1] #define tunnels_wc tunnels[0] |
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/* Given src, dst and key, find appropriate for input tunnel. */ static struct ip6_tnl *ip6gre_tunnel_lookup(struct net_device *dev, const struct in6_addr *remote, const struct in6_addr *local, __be32 key, __be16 gre_proto) { struct net *net = dev_net(dev); int link = dev->ifindex; unsigned int h0 = HASH_ADDR(remote); unsigned int h1 = HASH_KEY(key); struct ip6_tnl *t, *cand = NULL; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); |
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int dev_type = (gre_proto == htons(ETH_P_TEB) || |
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gre_proto == htons(ETH_P_ERSPAN) || gre_proto == htons(ETH_P_ERSPAN2)) ? |
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ARPHRD_ETHER : ARPHRD_IP6GRE; int score, cand_score = 4; |
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struct net_device *ndev; |
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|
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for_each_ip_tunnel_rcu(t, ign->tunnels_r_l[h0 ^ h1]) { |
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if (!ipv6_addr_equal(local, &t->parms.laddr) || !ipv6_addr_equal(remote, &t->parms.raddr) || key != t->parms.i_key || !(t->dev->flags & IFF_UP)) continue; if (t->dev->type != ARPHRD_IP6GRE && t->dev->type != dev_type) continue; score = 0; if (t->parms.link != link) score |= 1; if (t->dev->type != dev_type) score |= 2; if (score == 0) return t; if (score < cand_score) { cand = t; cand_score = score; } } |
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for_each_ip_tunnel_rcu(t, ign->tunnels_r[h0 ^ h1]) { |
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if (!ipv6_addr_equal(remote, &t->parms.raddr) || key != t->parms.i_key || !(t->dev->flags & IFF_UP)) continue; if (t->dev->type != ARPHRD_IP6GRE && t->dev->type != dev_type) continue; score = 0; if (t->parms.link != link) score |= 1; if (t->dev->type != dev_type) score |= 2; if (score == 0) return t; if (score < cand_score) { cand = t; cand_score = score; } } |
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for_each_ip_tunnel_rcu(t, ign->tunnels_l[h1]) { |
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if ((!ipv6_addr_equal(local, &t->parms.laddr) && (!ipv6_addr_equal(local, &t->parms.raddr) || !ipv6_addr_is_multicast(local))) || key != t->parms.i_key || !(t->dev->flags & IFF_UP)) continue; if (t->dev->type != ARPHRD_IP6GRE && t->dev->type != dev_type) continue; score = 0; if (t->parms.link != link) score |= 1; if (t->dev->type != dev_type) score |= 2; if (score == 0) return t; if (score < cand_score) { cand = t; cand_score = score; } } |
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for_each_ip_tunnel_rcu(t, ign->tunnels_wc[h1]) { |
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if (t->parms.i_key != key || !(t->dev->flags & IFF_UP)) continue; if (t->dev->type != ARPHRD_IP6GRE && t->dev->type != dev_type) continue; score = 0; if (t->parms.link != link) score |= 1; if (t->dev->type != dev_type) score |= 2; if (score == 0) return t; if (score < cand_score) { cand = t; cand_score = score; } } |
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if (cand) |
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return cand; |
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if (gre_proto == htons(ETH_P_ERSPAN) || gre_proto == htons(ETH_P_ERSPAN2)) t = rcu_dereference(ign->collect_md_tun_erspan); else t = rcu_dereference(ign->collect_md_tun); |
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if (t && t->dev->flags & IFF_UP) return t; |
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ndev = READ_ONCE(ign->fb_tunnel_dev); if (ndev && ndev->flags & IFF_UP) return netdev_priv(ndev); |
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return NULL; } static struct ip6_tnl __rcu **__ip6gre_bucket(struct ip6gre_net *ign, const struct __ip6_tnl_parm *p) { const struct in6_addr *remote = &p->raddr; const struct in6_addr *local = &p->laddr; unsigned int h = HASH_KEY(p->i_key); int prio = 0; if (!ipv6_addr_any(local)) prio |= 1; if (!ipv6_addr_any(remote) && !ipv6_addr_is_multicast(remote)) { prio |= 2; h ^= HASH_ADDR(remote); } return &ign->tunnels[prio][h]; } |
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static void ip6gre_tunnel_link_md(struct ip6gre_net *ign, struct ip6_tnl *t) { if (t->parms.collect_md) rcu_assign_pointer(ign->collect_md_tun, t); } static void ip6erspan_tunnel_link_md(struct ip6gre_net *ign, struct ip6_tnl *t) { if (t->parms.collect_md) rcu_assign_pointer(ign->collect_md_tun_erspan, t); } static void ip6gre_tunnel_unlink_md(struct ip6gre_net *ign, struct ip6_tnl *t) { if (t->parms.collect_md) rcu_assign_pointer(ign->collect_md_tun, NULL); } static void ip6erspan_tunnel_unlink_md(struct ip6gre_net *ign, struct ip6_tnl *t) { if (t->parms.collect_md) rcu_assign_pointer(ign->collect_md_tun_erspan, NULL); } |
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static inline struct ip6_tnl __rcu **ip6gre_bucket(struct ip6gre_net *ign, const struct ip6_tnl *t) { return __ip6gre_bucket(ign, &t->parms); } static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t) { struct ip6_tnl __rcu **tp = ip6gre_bucket(ign, t); rcu_assign_pointer(t->next, rtnl_dereference(*tp)); rcu_assign_pointer(*tp, t); } static void ip6gre_tunnel_unlink(struct ip6gre_net *ign, struct ip6_tnl *t) { struct ip6_tnl __rcu **tp; struct ip6_tnl *iter; for (tp = ip6gre_bucket(ign, t); (iter = rtnl_dereference(*tp)) != NULL; tp = &iter->next) { if (t == iter) { rcu_assign_pointer(*tp, t->next); break; } } } static struct ip6_tnl *ip6gre_tunnel_find(struct net *net, const struct __ip6_tnl_parm *parms, int type) { const struct in6_addr *remote = &parms->raddr; const struct in6_addr *local = &parms->laddr; __be32 key = parms->i_key; int link = parms->link; struct ip6_tnl *t; struct ip6_tnl __rcu **tp; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); for (tp = __ip6gre_bucket(ign, parms); (t = rtnl_dereference(*tp)) != NULL; tp = &t->next) if (ipv6_addr_equal(local, &t->parms.laddr) && ipv6_addr_equal(remote, &t->parms.raddr) && key == t->parms.i_key && link == t->parms.link && type == t->dev->type) break; return t; } static struct ip6_tnl *ip6gre_tunnel_locate(struct net *net, const struct __ip6_tnl_parm *parms, int create) { struct ip6_tnl *t, *nt; struct net_device *dev; char name[IFNAMSIZ]; struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); t = ip6gre_tunnel_find(net, parms, ARPHRD_IP6GRE); |
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if (t && create) return NULL; |
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if (t || !create) return t; |
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if (parms->name[0]) { if (!dev_valid_name(parms->name)) return NULL; |
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strlcpy(name, parms->name, IFNAMSIZ); |
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} else { |
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strcpy(name, "ip6gre%d"); |
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} |
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dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, ip6gre_tunnel_setup); |
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if (!dev) return NULL; dev_net_set(dev, net); nt = netdev_priv(dev); nt->parms = *parms; dev->rtnl_link_ops = &ip6gre_link_ops; nt->dev = dev; |
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nt->net = dev_net(dev); |
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if (register_netdevice(dev) < 0) goto failed_free; |
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ip6gre_tnl_link_config(nt, 1); |
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/* Can use a lockless transmit, unless we generate output sequences */ |
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if (!(nt->parms.o_flags & TUNNEL_SEQ)) |
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dev->features |= NETIF_F_LLTX; dev_hold(dev); ip6gre_tunnel_link(ign, nt); return nt; failed_free: free_netdev(dev); return NULL; } |
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static void ip6erspan_tunnel_uninit(struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id); ip6erspan_tunnel_unlink_md(ign, t); ip6gre_tunnel_unlink(ign, t); dst_cache_reset(&t->dst_cache); dev_put(dev); } |
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static void ip6gre_tunnel_uninit(struct net_device *dev) { |
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struct ip6_tnl *t = netdev_priv(dev); struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id); |
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|
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ip6gre_tunnel_unlink_md(ign, t); |
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ip6gre_tunnel_unlink(ign, t); |
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if (ign->fb_tunnel_dev == dev) WRITE_ONCE(ign->fb_tunnel_dev, NULL); |
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dst_cache_reset(&t->dst_cache); |
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dev_put(dev); } |
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static int ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt, |
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u8 type, u8 code, int offset, __be32 info) |
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{ |
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struct net *net = dev_net(skb->dev); |
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const struct ipv6hdr *ipv6h; |
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struct tnl_ptk_info tpi; |
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struct ip6_tnl *t; |
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|
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if (gre_parse_header(skb, &tpi, NULL, htons(ETH_P_IPV6), offset) < 0) |
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return -EINVAL; |
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|
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ipv6h = (const struct ipv6hdr *)skb->data; |
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t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr, |
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tpi.key, tpi.proto); |
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if (!t) |
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return -ENOENT; |
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switch (type) { |
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case ICMPV6_DEST_UNREACH: |
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net_dbg_ratelimited("%s: Path to destination invalid or inactive! ", t->parms.name); |
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if (code != ICMPV6_PORT_UNREACH) break; |
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return 0; |
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case ICMPV6_TIME_EXCEED: if (code == ICMPV6_EXC_HOPLIMIT) { |
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net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel! ", t->parms.name); |
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break; |
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} |
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return 0; |
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case ICMPV6_PARAMPROB: { struct ipv6_tlv_tnl_enc_lim *tel; __u32 teli; |
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teli = 0; if (code == ICMPV6_HDR_FIELD) teli = ip6_tnl_parse_tlv_enc_lim(skb, skb->data); |
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if (teli && teli == be32_to_cpu(info) - 2) { |
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tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli]; if (tel->encap_limit == 0) { |
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net_dbg_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel! ", t->parms.name); |
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} } else { |
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net_dbg_ratelimited("%s: Recipient unable to parse tunneled packet! ", t->parms.name); |
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} |
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return 0; |
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} |
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case ICMPV6_PKT_TOOBIG: |
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ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL)); |
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return 0; |
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case NDISC_REDIRECT: ip6_redirect(skb, net, skb->dev->ifindex, 0, sock_net_uid(net, NULL)); |
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return 0; |
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} if (time_before(jiffies, t->err_time + IP6TUNNEL_ERR_TIMEO)) t->err_count++; else t->err_count = 1; t->err_time = jiffies; |
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return 0; |
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} |
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static int ip6gre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi) |
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{ const struct ipv6hdr *ipv6h; |
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struct ip6_tnl *tunnel; |
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ipv6h = ipv6_hdr(skb); |
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tunnel = ip6gre_tunnel_lookup(skb->dev, |
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&ipv6h->saddr, &ipv6h->daddr, tpi->key, tpi->proto); |
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if (tunnel) { |
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if (tunnel->parms.collect_md) { struct metadata_dst *tun_dst; __be64 tun_id; __be16 flags; flags = tpi->flags; tun_id = key32_to_tunnel_id(tpi->key); tun_dst = ipv6_tun_rx_dst(skb, flags, tun_id, 0); if (!tun_dst) return PACKET_REJECT; ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); } else { ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error); } |
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|
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return PACKET_RCVD; } |
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|
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return PACKET_REJECT; } |
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|
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static int ip6erspan_rcv(struct sk_buff *skb, |
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509 510 |
struct tnl_ptk_info *tpi, int gre_hdr_len) |
5a963eb61 ip6_gre: Add ERSP... |
511 |
{ |
1d7e2ed22 net: erspan: refa... |
512 |
struct erspan_base_hdr *ershdr; |
5a963eb61 ip6_gre: Add ERSP... |
513 |
const struct ipv6hdr *ipv6h; |
3df192830 net: erspan: fix ... |
514 |
struct erspan_md2 *md2; |
5a963eb61 ip6_gre: Add ERSP... |
515 |
struct ip6_tnl *tunnel; |
1d7e2ed22 net: erspan: refa... |
516 |
u8 ver; |
5a963eb61 ip6_gre: Add ERSP... |
517 |
|
293a1991c ip6_gre: fix a po... |
518 519 |
ipv6h = ipv6_hdr(skb); ershdr = (struct erspan_base_hdr *)skb->data; |
c69de58ba net: erspan: use ... |
520 |
ver = ershdr->ver; |
5a963eb61 ip6_gre: Add ERSP... |
521 522 523 524 525 |
tunnel = ip6gre_tunnel_lookup(skb->dev, &ipv6h->saddr, &ipv6h->daddr, tpi->key, tpi->proto); if (tunnel) { |
1d7e2ed22 net: erspan: refa... |
526 527 528 |
int len = erspan_hdr_len(ver); if (unlikely(!pskb_may_pull(skb, len))) |
ae3e13373 net: erspan: fix ... |
529 |
return PACKET_REJECT; |
1d7e2ed22 net: erspan: refa... |
530 531 |
if (__iptunnel_pull_header(skb, len, |
5a963eb61 ip6_gre: Add ERSP... |
532 533 534 |
htons(ETH_P_TEB), false, false) < 0) return PACKET_REJECT; |
ef7baf5e0 ip6_gre: add ip6 ... |
535 |
if (tunnel->parms.collect_md) { |
2a3cabae4 net: ip6_gre: fix... |
536 |
struct erspan_metadata *pkt_md, *md; |
ef7baf5e0 ip6_gre: add ip6 ... |
537 538 |
struct metadata_dst *tun_dst; struct ip_tunnel_info *info; |
2a3cabae4 net: ip6_gre: fix... |
539 |
unsigned char *gh; |
ef7baf5e0 ip6_gre: add ip6 ... |
540 541 542 543 544 545 546 547 548 549 550 |
__be64 tun_id; __be16 flags; tpi->flags |= TUNNEL_KEY; flags = tpi->flags; tun_id = key32_to_tunnel_id(tpi->key); tun_dst = ipv6_tun_rx_dst(skb, flags, tun_id, sizeof(*md)); if (!tun_dst) return PACKET_REJECT; |
2a3cabae4 net: ip6_gre: fix... |
551 552 553 554 555 556 557 558 |
/* skb can be uncloned in __iptunnel_pull_header, so * old pkt_md is no longer valid and we need to reset * it */ gh = skb_network_header(skb) + skb_network_header_len(skb); pkt_md = (struct erspan_metadata *)(gh + gre_hdr_len + sizeof(*ershdr)); |
ef7baf5e0 ip6_gre: add ip6 ... |
559 560 |
info = &tun_dst->u.tun_info; md = ip_tunnel_info_opts(info); |
94d7d8f29 ip6_gre: add ersp... |
561 |
md->version = ver; |
3df192830 net: erspan: fix ... |
562 563 564 |
md2 = &md->u.md2; memcpy(md2, pkt_md, ver == 1 ? ERSPAN_V1_MDSIZE : ERSPAN_V2_MDSIZE); |
ef7baf5e0 ip6_gre: add ip6 ... |
565 566 567 568 569 570 |
info->key.tun_flags |= TUNNEL_ERSPAN_OPT; info->options_len = sizeof(*md); ip6_tnl_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); } else { |
ef7baf5e0 ip6_gre: add ip6 ... |
571 572 |
ip6_tnl_rcv(tunnel, skb, tpi, NULL, log_ecn_error); } |
5a963eb61 ip6_gre: Add ERSP... |
573 574 575 576 577 578 |
return PACKET_RCVD; } return PACKET_REJECT; } |
308edfdf1 gre6: Cleanup GRE... |
579 580 581 582 583 |
static int gre_rcv(struct sk_buff *skb) { struct tnl_ptk_info tpi; bool csum_err = false; int hdr_len; |
eccc1bb8d tunnel: drop pack... |
584 |
|
e582615ad gre: fix error ha... |
585 |
hdr_len = gre_parse_header(skb, &tpi, &csum_err, htons(ETH_P_IPV6), 0); |
f132ae7c4 gre: change gre_p... |
586 |
if (hdr_len < 0) |
308edfdf1 gre6: Cleanup GRE... |
587 |
goto drop; |
c12b395a4 gre: Support GRE ... |
588 |
|
308edfdf1 gre6: Cleanup GRE... |
589 590 |
if (iptunnel_pull_header(skb, hdr_len, tpi.proto, false)) goto drop; |
c12b395a4 gre: Support GRE ... |
591 |
|
94d7d8f29 ip6_gre: add ersp... |
592 593 |
if (unlikely(tpi.proto == htons(ETH_P_ERSPAN) || tpi.proto == htons(ETH_P_ERSPAN2))) { |
2a3cabae4 net: ip6_gre: fix... |
594 |
if (ip6erspan_rcv(skb, &tpi, hdr_len) == PACKET_RCVD) |
5a963eb61 ip6_gre: Add ERSP... |
595 |
return 0; |
a7343211f ip6_gre: fix erro... |
596 |
goto out; |
5a963eb61 ip6_gre: Add ERSP... |
597 |
} |
308edfdf1 gre6: Cleanup GRE... |
598 |
if (ip6gre_rcv(skb, &tpi) == PACKET_RCVD) |
c12b395a4 gre: Support GRE ... |
599 |
return 0; |
c12b395a4 gre: Support GRE ... |
600 |
|
a7343211f ip6_gre: fix erro... |
601 |
out: |
308edfdf1 gre6: Cleanup GRE... |
602 |
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0); |
c12b395a4 gre: Support GRE ... |
603 |
drop: |
c12b395a4 gre: Support GRE ... |
604 605 606 |
kfree_skb(skb); return 0; } |
b05229f44 gre6: Cleanup GRE... |
607 |
static int gre_handle_offloads(struct sk_buff *skb, bool csum) |
c12b395a4 gre: Support GRE ... |
608 |
{ |
b05229f44 gre6: Cleanup GRE... |
609 610 |
return iptunnel_handle_offloads(skb, csum ? SKB_GSO_GRE_CSUM : SKB_GSO_GRE); |
c12b395a4 gre: Support GRE ... |
611 |
} |
898b29798 ip6_gre: Refactor... |
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 |
static void prepare_ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev, struct flowi6 *fl6, __u8 *dsfield, int *encap_limit) { const struct iphdr *iph = ip_hdr(skb); struct ip6_tnl *t = netdev_priv(dev); if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) *encap_limit = t->parms.encap_limit; memcpy(fl6, &t->fl.u.ip6, sizeof(*fl6)); if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS) *dsfield = ipv4_get_dsfield(iph); else *dsfield = ip6_tclass(t->parms.flowinfo); if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK) fl6->flowi6_mark = skb->mark; else fl6->flowi6_mark = t->parms.fwmark; fl6->flowi6_uid = sock_net_uid(dev_net(dev), NULL); } static int prepare_ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev, struct flowi6 *fl6, __u8 *dsfield, int *encap_limit) { |
3bc817d66 ip6_gre: reload i... |
643 |
struct ipv6hdr *ipv6h; |
898b29798 ip6_gre: Refactor... |
644 645 646 647 648 |
struct ip6_tnl *t = netdev_priv(dev); __u16 offset; offset = ip6_tnl_parse_tlv_enc_lim(skb, skb_network_header(skb)); /* ip6_tnl_parse_tlv_enc_lim() might have reallocated skb->head */ |
3bc817d66 ip6_gre: reload i... |
649 |
ipv6h = ipv6_hdr(skb); |
898b29798 ip6_gre: Refactor... |
650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 |
if (offset > 0) { struct ipv6_tlv_tnl_enc_lim *tel; tel = (struct ipv6_tlv_tnl_enc_lim *)&skb_network_header(skb)[offset]; if (tel->encap_limit == 0) { icmpv6_send(skb, ICMPV6_PARAMPROB, ICMPV6_HDR_FIELD, offset + 2); return -1; } *encap_limit = tel->encap_limit - 1; } else if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) { *encap_limit = t->parms.encap_limit; } memcpy(fl6, &t->fl.u.ip6, sizeof(*fl6)); if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS) *dsfield = ipv6_get_dsfield(ipv6h); else *dsfield = ip6_tclass(t->parms.flowinfo); if (t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) fl6->flowlabel |= ip6_flowlabel(ipv6h); if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK) fl6->flowi6_mark = skb->mark; else fl6->flowi6_mark = t->parms.fwmark; fl6->flowi6_uid = sock_net_uid(dev_net(dev), NULL); return 0; } |
e5f7e211b ip6gre: avoid tx_... |
684 685 686 687 688 689 690 691 692 693 |
static struct ip_tunnel_info *skb_tunnel_info_txcheck(struct sk_buff *skb) { struct ip_tunnel_info *tun_info; tun_info = skb_tunnel_info(skb); if (unlikely(!tun_info || !(tun_info->mode & IP_TUNNEL_INFO_TX))) return ERR_PTR(-EINVAL); return tun_info; } |
b05229f44 gre6: Cleanup GRE... |
694 695 696 697 |
static netdev_tx_t __gre6_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, struct flowi6 *fl6, int encap_limit, __u32 *pmtu, __be16 proto) |
c12b395a4 gre: Support GRE ... |
698 |
{ |
c12b395a4 gre: Support GRE ... |
699 |
struct ip6_tnl *tunnel = netdev_priv(dev); |
8aec4959d ip6_gre: update d... |
700 |
__be16 protocol; |
c12b395a4 gre: Support GRE ... |
701 702 703 |
if (dev->type == ARPHRD_ETHER) IPCB(skb)->flags = 0; |
b05229f44 gre6: Cleanup GRE... |
704 705 706 |
if (dev->header_ops && dev->type == ARPHRD_IP6GRE) fl6->daddr = ((struct ipv6hdr *)skb->data)->daddr; else |
c12b395a4 gre: Support GRE ... |
707 |
fl6->daddr = tunnel->parms.raddr; |
c12b395a4 gre: Support GRE ... |
708 |
|
01b8d064d net: ip6_gre: Req... |
709 710 |
if (skb_cow_head(skb, dev->needed_headroom ?: tunnel->hlen)) return -ENOMEM; |
b05229f44 gre6: Cleanup GRE... |
711 |
/* Push GRE header. */ |
8aec4959d ip6_gre: update d... |
712 |
protocol = (dev->type == ARPHRD_ETHER) ? htons(ETH_P_TEB) : proto; |
6712abc16 ip6_gre: add ip6 ... |
713 714 715 716 717 |
if (tunnel->parms.collect_md) { struct ip_tunnel_info *tun_info; const struct ip_tunnel_key *key; __be16 flags; |
e5f7e211b ip6gre: avoid tx_... |
718 719 720 |
tun_info = skb_tunnel_info_txcheck(skb); if (IS_ERR(tun_info) || unlikely(ip_tunnel_info_af(tun_info) != AF_INET6)) |
6712abc16 ip6_gre: add ip6 ... |
721 722 723 724 725 726 727 728 729 730 |
return -EINVAL; key = &tun_info->key; memset(fl6, 0, sizeof(*fl6)); fl6->flowi6_proto = IPPROTO_GRE; fl6->daddr = key->u.ipv6.dst; fl6->flowlabel = key->label; fl6->flowi6_uid = sock_net_uid(dev_net(dev), NULL); dsfield = key->tos; |
77a5196a8 gre: add sequence... |
731 732 |
flags = key->tun_flags & (TUNNEL_CSUM | TUNNEL_KEY | TUNNEL_SEQ); |
6712abc16 ip6_gre: add ip6 ... |
733 734 735 736 |
tunnel->tun_hlen = gre_calc_hlen(flags); gre_build_header(skb, tunnel->tun_hlen, flags, protocol, |
77a5196a8 gre: add sequence... |
737 |
tunnel_id_to_key32(tun_info->key.tun_id), |
157463941 gre: fix TUNNEL_S... |
738 |
(flags & TUNNEL_SEQ) ? htonl(tunnel->o_seqno++) |
77a5196a8 gre: add sequence... |
739 |
: 0); |
6712abc16 ip6_gre: add ip6 ... |
740 741 |
} else { |
77a5196a8 gre: add sequence... |
742 743 |
if (tunnel->parms.o_flags & TUNNEL_SEQ) tunnel->o_seqno++; |
6712abc16 ip6_gre: add ip6 ... |
744 745 746 747 |
gre_build_header(skb, tunnel->tun_hlen, tunnel->parms.o_flags, protocol, tunnel->parms.o_key, htonl(tunnel->o_seqno)); } |
c12b395a4 gre: Support GRE ... |
748 |
|
b05229f44 gre6: Cleanup GRE... |
749 750 |
return ip6_tnl_xmit(skb, dev, dsfield, fl6, encap_limit, pmtu, NEXTHDR_GRE); |
c12b395a4 gre: Support GRE ... |
751 752 753 754 755 |
} static inline int ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); |
c12b395a4 gre: Support GRE ... |
756 757 |
int encap_limit = -1; struct flowi6 fl6; |
6712abc16 ip6_gre: add ip6 ... |
758 |
__u8 dsfield = 0; |
c12b395a4 gre: Support GRE ... |
759 760 |
__u32 mtu; int err; |
5146d1f15 tunnel: Clear IPC... |
761 |
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); |
6712abc16 ip6_gre: add ip6 ... |
762 763 764 |
if (!t->parms.collect_md) prepare_ip6gre_xmit_ipv4(skb, dev, &fl6, &dsfield, &encap_limit); |
e2d118a1c net: inet: Suppor... |
765 |
|
b05229f44 gre6: Cleanup GRE... |
766 767 768 769 770 771 |
err = gre_handle_offloads(skb, !!(t->parms.o_flags & TUNNEL_CSUM)); if (err) return -1; err = __gre6_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, skb->protocol); |
c12b395a4 gre: Support GRE ... |
772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 |
if (err != 0) { /* XXX: send ICMP error even if DF is not set. */ if (err == -EMSGSIZE) icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); return -1; } return 0; } static inline int ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); struct ipv6hdr *ipv6h = ipv6_hdr(skb); int encap_limit = -1; |
c12b395a4 gre: Support GRE ... |
788 |
struct flowi6 fl6; |
6712abc16 ip6_gre: add ip6 ... |
789 |
__u8 dsfield = 0; |
c12b395a4 gre: Support GRE ... |
790 791 792 793 794 |
__u32 mtu; int err; if (ipv6_addr_equal(&t->parms.raddr, &ipv6h->saddr)) return -1; |
6712abc16 ip6_gre: add ip6 ... |
795 796 |
if (!t->parms.collect_md && prepare_ip6gre_xmit_ipv6(skb, dev, &fl6, &dsfield, &encap_limit)) |
898b29798 ip6_gre: Refactor... |
797 |
return -1; |
e2d118a1c net: inet: Suppor... |
798 |
|
b05229f44 gre6: Cleanup GRE... |
799 800 801 802 803 |
if (gre_handle_offloads(skb, !!(t->parms.o_flags & TUNNEL_CSUM))) return -1; err = __gre6_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, skb->protocol); |
c12b395a4 gre: Support GRE ... |
804 805 806 807 808 809 810 811 812 813 |
if (err != 0) { if (err == -EMSGSIZE) icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); return -1; } return 0; } /** |
7ccbdff13 ip6_gre: correct ... |
814 |
* ip6gre_tnl_addr_conflict - compare packet addresses to tunnel's own |
c12b395a4 gre: Support GRE ... |
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 |
* @t: the outgoing tunnel device * @hdr: IPv6 header from the incoming packet * * Description: * Avoid trivial tunneling loop by checking that tunnel exit-point * doesn't match source of incoming packet. * * Return: * 1 if conflict, * 0 else **/ static inline bool ip6gre_tnl_addr_conflict(const struct ip6_tnl *t, const struct ipv6hdr *hdr) { return ipv6_addr_equal(&t->parms.raddr, &hdr->saddr); } static int ip6gre_xmit_other(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); int encap_limit = -1; struct flowi6 fl6; __u32 mtu; int err; if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) encap_limit = t->parms.encap_limit; |
6712abc16 ip6_gre: add ip6 ... |
843 844 |
if (!t->parms.collect_md) memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6)); |
c12b395a4 gre: Support GRE ... |
845 |
|
b05229f44 gre6: Cleanup GRE... |
846 847 848 849 850 |
err = gre_handle_offloads(skb, !!(t->parms.o_flags & TUNNEL_CSUM)); if (err) return err; err = __gre6_xmit(skb, dev, 0, &fl6, encap_limit, &mtu, skb->protocol); |
c12b395a4 gre: Support GRE ... |
851 852 853 854 855 856 857 858 859 860 |
return err; } static netdev_tx_t ip6gre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); struct net_device_stats *stats = &t->dev->stats; int ret; |
cb9f1b783 ip: validate head... |
861 862 |
if (!pskb_inet_may_pull(skb)) goto tx_err; |
d50051407 ipv6: Allow sendi... |
863 |
if (!ip6_tnl_xmit_ctl(t, &t->parms.laddr, &t->parms.raddr)) |
41ab3e31b ipv6/ip6_gre: fix... |
864 |
goto tx_err; |
c12b395a4 gre: Support GRE ... |
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 |
switch (skb->protocol) { case htons(ETH_P_IP): ret = ip6gre_xmit_ipv4(skb, dev); break; case htons(ETH_P_IPV6): ret = ip6gre_xmit_ipv6(skb, dev); break; default: ret = ip6gre_xmit_other(skb, dev); break; } if (ret < 0) goto tx_err; return NETDEV_TX_OK; tx_err: |
e5f7e211b ip6gre: avoid tx_... |
884 885 |
if (!t->parms.collect_md || !IS_ERR(skb_tunnel_info_txcheck(skb))) stats->tx_errors++; |
c12b395a4 gre: Support GRE ... |
886 887 888 889 |
stats->tx_dropped++; kfree_skb(skb); return NETDEV_TX_OK; } |
5a963eb61 ip6_gre: Add ERSP... |
890 891 892 |
static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { |
e5f7e211b ip6gre: avoid tx_... |
893 |
struct ip_tunnel_info *tun_info = NULL; |
5a963eb61 ip6_gre: Add ERSP... |
894 895 896 897 898 899 900 901 |
struct ip6_tnl *t = netdev_priv(dev); struct dst_entry *dst = skb_dst(skb); struct net_device_stats *stats; bool truncate = false; int encap_limit = -1; __u8 dsfield = false; struct flowi6 fl6; int err = -EINVAL; |
20704bd16 erspan: build the... |
902 |
__be16 proto; |
5a963eb61 ip6_gre: Add ERSP... |
903 |
__u32 mtu; |
1baf5ebf8 erspan: auto dete... |
904 |
int nhoff; |
d5db21a3e erspan: auto dete... |
905 |
int thoff; |
5a963eb61 ip6_gre: Add ERSP... |
906 |
|
cb9f1b783 ip: validate head... |
907 908 |
if (!pskb_inet_may_pull(skb)) goto tx_err; |
5a963eb61 ip6_gre: Add ERSP... |
909 910 911 912 913 |
if (!ip6_tnl_xmit_ctl(t, &t->parms.laddr, &t->parms.raddr)) goto tx_err; if (gre_handle_offloads(skb, false)) goto tx_err; |
5a963eb61 ip6_gre: Add ERSP... |
914 915 916 917 |
if (skb->len > dev->mtu + dev->hard_header_len) { pskb_trim(skb, dev->mtu + dev->hard_header_len); truncate = true; } |
1baf5ebf8 erspan: auto dete... |
918 919 920 921 |
nhoff = skb_network_header(skb) - skb_mac_header(skb); if (skb->protocol == htons(ETH_P_IP) && (ntohs(ip_hdr(skb)->tot_len) > skb->len - nhoff)) truncate = true; |
d5db21a3e erspan: auto dete... |
922 923 924 925 |
thoff = skb_transport_header(skb) - skb_mac_header(skb); if (skb->protocol == htons(ETH_P_IPV6) && (ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff)) truncate = true; |
5691484df net: ip6_gre: Fix... |
926 |
if (skb_cow_head(skb, dev->needed_headroom ?: t->hlen)) |
e41c7c68e ip6erspan: make s... |
927 |
goto tx_err; |
5a963eb61 ip6_gre: Add ERSP... |
928 |
t->parms.o_flags &= ~TUNNEL_KEY; |
5a963eb61 ip6_gre: Add ERSP... |
929 |
IPCB(skb)->flags = 0; |
ef7baf5e0 ip6_gre: add ip6 ... |
930 931 932 933 934 |
/* For collect_md mode, derive fl6 from the tunnel key, * for native mode, call prepare_ip6gre_xmit_{ipv4,ipv6}. */ if (t->parms.collect_md) { |
ef7baf5e0 ip6_gre: add ip6 ... |
935 936 |
const struct ip_tunnel_key *key; struct erspan_metadata *md; |
c69de58ba net: erspan: use ... |
937 |
__be32 tun_id; |
ef7baf5e0 ip6_gre: add ip6 ... |
938 |
|
e5f7e211b ip6gre: avoid tx_... |
939 940 941 |
tun_info = skb_tunnel_info_txcheck(skb); if (IS_ERR(tun_info) || unlikely(ip_tunnel_info_af(tun_info) != AF_INET6)) |
28e486037 ip6_gre: fix a ds... |
942 |
goto tx_err; |
ef7baf5e0 ip6_gre: add ip6 ... |
943 944 945 946 947 948 949 950 951 |
key = &tun_info->key; memset(&fl6, 0, sizeof(fl6)); fl6.flowi6_proto = IPPROTO_GRE; fl6.daddr = key->u.ipv6.dst; fl6.flowlabel = key->label; fl6.flowi6_uid = sock_net_uid(dev_net(dev), NULL); dsfield = key->tos; |
256c87c17 net: check tunnel... |
952 953 |
if (!(tun_info->key.tun_flags & TUNNEL_ERSPAN_OPT)) goto tx_err; |
2eb8d6d29 erspan: fix the t... |
954 |
if (tun_info->options_len < sizeof(*md)) |
ef7baf5e0 ip6_gre: add ip6 ... |
955 |
goto tx_err; |
2eb8d6d29 erspan: fix the t... |
956 |
md = ip_tunnel_info_opts(tun_info); |
ef7baf5e0 ip6_gre: add ip6 ... |
957 |
|
c69de58ba net: erspan: use ... |
958 |
tun_id = tunnel_id_to_key32(key->tun_id); |
94d7d8f29 ip6_gre: add ersp... |
959 960 |
if (md->version == 1) { erspan_build_header(skb, |
c69de58ba net: erspan: use ... |
961 |
ntohl(tun_id), |
94d7d8f29 ip6_gre: add ersp... |
962 963 964 |
ntohl(md->u.index), truncate, false); } else if (md->version == 2) { |
94d7d8f29 ip6_gre: add ersp... |
965 |
erspan_build_header_v2(skb, |
c69de58ba net: erspan: use ... |
966 967 968 969 |
ntohl(tun_id), md->u.md2.dir, get_hwid(&md->u.md2), truncate, false); |
d6aa71197 ip6erspan: improv... |
970 971 |
} else { goto tx_err; |
94d7d8f29 ip6_gre: add ersp... |
972 |
} |
ef7baf5e0 ip6_gre: add ip6 ... |
973 974 975 976 977 978 979 980 |
} else { switch (skb->protocol) { case htons(ETH_P_IP): memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); prepare_ip6gre_xmit_ipv4(skb, dev, &fl6, &dsfield, &encap_limit); break; case htons(ETH_P_IPV6): |
cb9f1b783 ip: validate head... |
981 |
if (ipv6_addr_equal(&t->parms.raddr, &ipv6_hdr(skb)->saddr)) |
ef7baf5e0 ip6_gre: add ip6 ... |
982 983 984 985 986 987 988 989 990 |
goto tx_err; if (prepare_ip6gre_xmit_ipv6(skb, dev, &fl6, &dsfield, &encap_limit)) goto tx_err; break; default: memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6)); break; } |
94d7d8f29 ip6_gre: add ersp... |
991 |
if (t->parms.erspan_ver == 1) |
c69de58ba net: erspan: use ... |
992 |
erspan_build_header(skb, ntohl(t->parms.o_key), |
94d7d8f29 ip6_gre: add ersp... |
993 994 |
t->parms.index, truncate, false); |
02f99df18 erspan: fix inval... |
995 |
else if (t->parms.erspan_ver == 2) |
c69de58ba net: erspan: use ... |
996 |
erspan_build_header_v2(skb, ntohl(t->parms.o_key), |
94d7d8f29 ip6_gre: add ersp... |
997 998 999 |
t->parms.dir, t->parms.hwid, truncate, false); |
02f99df18 erspan: fix inval... |
1000 1001 |
else goto tx_err; |
ef7baf5e0 ip6_gre: add ip6 ... |
1002 1003 |
fl6.daddr = t->parms.raddr; } |
5a963eb61 ip6_gre: Add ERSP... |
1004 1005 |
/* Push GRE header. */ |
20704bd16 erspan: build the... |
1006 1007 1008 |
proto = (t->parms.erspan_ver == 1) ? htons(ETH_P_ERSPAN) : htons(ETH_P_ERSPAN2); gre_build_header(skb, 8, TUNNEL_SEQ, proto, 0, htonl(t->o_seqno++)); |
5a963eb61 ip6_gre: Add ERSP... |
1009 1010 |
/* TooBig packet may have updated dst->dev's mtu */ |
ef7baf5e0 ip6_gre: add ip6 ... |
1011 |
if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu) |
675d76ad0 ip6_gre: do not c... |
1012 |
dst->ops->update_pmtu(dst, NULL, skb, dst->dev->mtu, false); |
5a963eb61 ip6_gre: Add ERSP... |
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 |
err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, NEXTHDR_GRE); if (err != 0) { /* XXX: send ICMP error even if DF is not set. */ if (err == -EMSGSIZE) { if (skb->protocol == htons(ETH_P_IP)) icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); else icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); } goto tx_err; } return NETDEV_TX_OK; tx_err: stats = &t->dev->stats; |
e5f7e211b ip6gre: avoid tx_... |
1032 1033 |
if (!IS_ERR(tun_info)) stats->tx_errors++; |
5a963eb61 ip6_gre: Add ERSP... |
1034 1035 1036 1037 |
stats->tx_dropped++; kfree_skb(skb); return NETDEV_TX_OK; } |
a483373ea net: ip6_gre: Spl... |
1038 |
static void ip6gre_tnl_link_config_common(struct ip6_tnl *t) |
c12b395a4 gre: Support GRE ... |
1039 1040 1041 1042 |
{ struct net_device *dev = t->dev; struct __ip6_tnl_parm *p = &t->parms; struct flowi6 *fl6 = &t->fl.u.ip6; |
c12b395a4 gre: Support GRE ... |
1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 |
if (dev->type != ARPHRD_ETHER) { memcpy(dev->dev_addr, &p->laddr, sizeof(struct in6_addr)); memcpy(dev->broadcast, &p->raddr, sizeof(struct in6_addr)); } /* Set up flowi template */ fl6->saddr = p->laddr; fl6->daddr = p->raddr; fl6->flowi6_oif = p->link; fl6->flowlabel = 0; |
252f3f5a1 ip6_gre: Set flow... |
1054 |
fl6->flowi6_proto = IPPROTO_GRE; |
c12b395a4 gre: Support GRE ... |
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 |
if (!(p->flags&IP6_TNL_F_USE_ORIG_TCLASS)) fl6->flowlabel |= IPV6_TCLASS_MASK & p->flowinfo; if (!(p->flags&IP6_TNL_F_USE_ORIG_FLOWLABEL)) fl6->flowlabel |= IPV6_FLOWLABEL_MASK & p->flowinfo; p->flags &= ~(IP6_TNL_F_CAP_XMIT|IP6_TNL_F_CAP_RCV|IP6_TNL_F_CAP_PER_PACKET); p->flags |= ip6_tnl_get_cap(t, &p->laddr, &p->raddr); if (p->flags&IP6_TNL_F_CAP_XMIT && p->flags&IP6_TNL_F_CAP_RCV && dev->type != ARPHRD_ETHER) dev->flags |= IFF_POINTOPOINT; else dev->flags &= ~IFF_POINTOPOINT; |
a483373ea net: ip6_gre: Spl... |
1069 |
} |
c12b395a4 gre: Support GRE ... |
1070 |
|
a483373ea net: ip6_gre: Spl... |
1071 1072 1073 1074 1075 |
static void ip6gre_tnl_link_config_route(struct ip6_tnl *t, int set_mtu, int t_hlen) { const struct __ip6_tnl_parm *p = &t->parms; struct net_device *dev = t->dev; |
c12b395a4 gre: Support GRE ... |
1076 1077 1078 1079 |
if (p->flags & IP6_TNL_F_CAP_XMIT) { int strict = (ipv6_addr_type(&p->raddr) & (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL)); |
22f08069e ip6gre: add x-net... |
1080 |
struct rt6_info *rt = rt6_lookup(t->net, |
c12b395a4 gre: Support GRE ... |
1081 |
&p->raddr, &p->laddr, |
b75cc8f90 net/ipv6: Pass sk... |
1082 |
p->link, NULL, strict); |
c12b395a4 gre: Support GRE ... |
1083 |
|
63159f29b ipv6: coding styl... |
1084 |
if (!rt) |
c12b395a4 gre: Support GRE ... |
1085 1086 1087 |
return; if (rt->dst.dev) { |
832ba5964 net: ip6_gre: set... |
1088 1089 1090 1091 1092 1093 1094 |
unsigned short dst_len = rt->dst.dev->hard_header_len + t_hlen; if (t->dev->header_ops) dev->hard_header_len = dst_len; else dev->needed_headroom = dst_len; |
c12b395a4 gre: Support GRE ... |
1095 1096 |
if (set_mtu) { |
db2ec95d1 ip6_gre: Fix MTU ... |
1097 |
dev->mtu = rt->dst.dev->mtu - t_hlen; |
c12b395a4 gre: Support GRE ... |
1098 1099 |
if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) dev->mtu -= 8; |
a9e242ca4 ip6gretap: Fix MT... |
1100 1101 |
if (dev->type == ARPHRD_ETHER) dev->mtu -= ETH_HLEN; |
c12b395a4 gre: Support GRE ... |
1102 1103 1104 1105 1106 |
if (dev->mtu < IPV6_MIN_MTU) dev->mtu = IPV6_MIN_MTU; } } |
94e187c01 ipv6: introduce i... |
1107 |
ip6_rt_put(rt); |
c12b395a4 gre: Support GRE ... |
1108 |
} |
c12b395a4 gre: Support GRE ... |
1109 |
} |
a483373ea net: ip6_gre: Spl... |
1110 1111 1112 1113 1114 1115 1116 1117 |
static int ip6gre_calc_hlen(struct ip6_tnl *tunnel) { int t_hlen; tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags); tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen; t_hlen = tunnel->hlen + sizeof(struct ipv6hdr); |
832ba5964 net: ip6_gre: set... |
1118 1119 1120 1121 1122 |
if (tunnel->dev->header_ops) tunnel->dev->hard_header_len = LL_MAX_HEADER + t_hlen; else tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen; |
a483373ea net: ip6_gre: Spl... |
1123 1124 1125 1126 1127 1128 1129 1130 |
return t_hlen; } static void ip6gre_tnl_link_config(struct ip6_tnl *t, int set_mtu) { ip6gre_tnl_link_config_common(t); ip6gre_tnl_link_config_route(t, set_mtu, ip6gre_calc_hlen(t)); } |
a6465350e net: ip6_gre: Spl... |
1131 1132 |
static void ip6gre_tnl_copy_tnl_parm(struct ip6_tnl *t, const struct __ip6_tnl_parm *p) |
c12b395a4 gre: Support GRE ... |
1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 |
{ t->parms.laddr = p->laddr; t->parms.raddr = p->raddr; t->parms.flags = p->flags; t->parms.hop_limit = p->hop_limit; t->parms.encap_limit = p->encap_limit; t->parms.flowinfo = p->flowinfo; t->parms.link = p->link; t->parms.proto = p->proto; t->parms.i_key = p->i_key; t->parms.o_key = p->o_key; t->parms.i_flags = p->i_flags; t->parms.o_flags = p->o_flags; |
0a473b82c ip6_tunnel: Allow... |
1146 |
t->parms.fwmark = p->fwmark; |
80b3671e9 ip6_gre: update v... |
1147 1148 1149 1150 |
t->parms.erspan_ver = p->erspan_ver; t->parms.index = p->index; t->parms.dir = p->dir; t->parms.hwid = p->hwid; |
607f725f6 net: replace dst_... |
1151 |
dst_cache_reset(&t->dst_cache); |
a6465350e net: ip6_gre: Spl... |
1152 1153 1154 1155 1156 1157 |
} static int ip6gre_tnl_change(struct ip6_tnl *t, const struct __ip6_tnl_parm *p, int set_mtu) { ip6gre_tnl_copy_tnl_parm(t, p); |
c12b395a4 gre: Support GRE ... |
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 |
ip6gre_tnl_link_config(t, set_mtu); return 0; } static void ip6gre_tnl_parm_from_user(struct __ip6_tnl_parm *p, const struct ip6_tnl_parm2 *u) { p->laddr = u->laddr; p->raddr = u->raddr; p->flags = u->flags; p->hop_limit = u->hop_limit; p->encap_limit = u->encap_limit; p->flowinfo = u->flowinfo; p->link = u->link; p->i_key = u->i_key; p->o_key = u->o_key; |
f41fe3c2a gre6: Fix flag tr... |
1174 1175 |
p->i_flags = gre_flags_to_tnl_flags(u->i_flags); p->o_flags = gre_flags_to_tnl_flags(u->o_flags); |
c12b395a4 gre: Support GRE ... |
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 |
memcpy(p->name, u->name, sizeof(u->name)); } static void ip6gre_tnl_parm_to_user(struct ip6_tnl_parm2 *u, const struct __ip6_tnl_parm *p) { u->proto = IPPROTO_GRE; u->laddr = p->laddr; u->raddr = p->raddr; u->flags = p->flags; u->hop_limit = p->hop_limit; u->encap_limit = p->encap_limit; u->flowinfo = p->flowinfo; u->link = p->link; u->i_key = p->i_key; u->o_key = p->o_key; |
f41fe3c2a gre6: Fix flag tr... |
1192 1193 |
u->i_flags = gre_tnl_flags_to_gre_flags(p->i_flags); u->o_flags = gre_tnl_flags_to_gre_flags(p->o_flags); |
c12b395a4 gre: Support GRE ... |
1194 1195 1196 1197 1198 1199 1200 1201 1202 |
memcpy(u->name, p->name, sizeof(u->name)); } static int ip6gre_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { int err = 0; struct ip6_tnl_parm2 p; struct __ip6_tnl_parm p1; |
22f08069e ip6gre: add x-net... |
1203 1204 |
struct ip6_tnl *t = netdev_priv(dev); struct net *net = t->net; |
c12b395a4 gre: Support GRE ... |
1205 |
struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); |
308edfdf1 gre6: Cleanup GRE... |
1206 |
memset(&p1, 0, sizeof(p1)); |
c12b395a4 gre: Support GRE ... |
1207 1208 |
switch (cmd) { case SIOCGETTUNNEL: |
c12b395a4 gre: Support GRE ... |
1209 1210 1211 1212 1213 1214 1215 |
if (dev == ign->fb_tunnel_dev) { if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) { err = -EFAULT; break; } ip6gre_tnl_parm_from_user(&p1, &p); t = ip6gre_tunnel_locate(net, &p1, 0); |
63159f29b ipv6: coding styl... |
1216 |
if (!t) |
22f08069e ip6gre: add x-net... |
1217 |
t = netdev_priv(dev); |
c12b395a4 gre: Support GRE ... |
1218 |
} |
5dbd50684 ipv6,gre: do not ... |
1219 |
memset(&p, 0, sizeof(p)); |
c12b395a4 gre: Support GRE ... |
1220 1221 1222 1223 1224 1225 1226 1227 |
ip6gre_tnl_parm_to_user(&p, &t->parms); if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p))) err = -EFAULT; break; case SIOCADDTUNNEL: case SIOCCHGTUNNEL: err = -EPERM; |
af31f412c net: Allow userns... |
1228 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
c12b395a4 gre: Support GRE ... |
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
goto done; err = -EFAULT; if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) goto done; err = -EINVAL; if ((p.i_flags|p.o_flags)&(GRE_VERSION|GRE_ROUTING)) goto done; if (!(p.i_flags&GRE_KEY)) p.i_key = 0; if (!(p.o_flags&GRE_KEY)) p.o_key = 0; ip6gre_tnl_parm_from_user(&p1, &p); t = ip6gre_tunnel_locate(net, &p1, cmd == SIOCADDTUNNEL); if (dev != ign->fb_tunnel_dev && cmd == SIOCCHGTUNNEL) { |
53b24b8f9 ipv6: coding styl... |
1248 |
if (t) { |
c12b395a4 gre: Support GRE ... |
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 |
if (t->dev != dev) { err = -EEXIST; break; } } else { t = netdev_priv(dev); ip6gre_tunnel_unlink(ign, t); synchronize_net(); ip6gre_tnl_change(t, &p1, 1); ip6gre_tunnel_link(ign, t); netdev_state_change(dev); } } if (t) { err = 0; |
5dbd50684 ipv6,gre: do not ... |
1266 |
memset(&p, 0, sizeof(p)); |
c12b395a4 gre: Support GRE ... |
1267 1268 1269 1270 1271 1272 1273 1274 1275 |
ip6gre_tnl_parm_to_user(&p, &t->parms); if (copy_to_user(ifr->ifr_ifru.ifru_data, &p, sizeof(p))) err = -EFAULT; } else err = (cmd == SIOCADDTUNNEL ? -ENOBUFS : -ENOENT); break; case SIOCDELTUNNEL: err = -EPERM; |
af31f412c net: Allow userns... |
1276 |
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
c12b395a4 gre: Support GRE ... |
1277 1278 1279 1280 1281 1282 1283 1284 1285 |
goto done; if (dev == ign->fb_tunnel_dev) { err = -EFAULT; if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p))) goto done; err = -ENOENT; ip6gre_tnl_parm_from_user(&p1, &p); t = ip6gre_tunnel_locate(net, &p1, 0); |
63159f29b ipv6: coding styl... |
1286 |
if (!t) |
c12b395a4 gre: Support GRE ... |
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 |
goto done; err = -EPERM; if (t == netdev_priv(ign->fb_tunnel_dev)) goto done; dev = t->dev; } unregister_netdevice(dev); err = 0; break; default: err = -EINVAL; } done: return err; } |
c12b395a4 gre: Support GRE ... |
1304 |
static int ip6gre_header(struct sk_buff *skb, struct net_device *dev, |
76cc0d328 ip6_gre: skb_push... |
1305 1306 |
unsigned short type, const void *daddr, const void *saddr, unsigned int len) |
c12b395a4 gre: Support GRE ... |
1307 1308 |
{ struct ip6_tnl *t = netdev_priv(dev); |
76cc0d328 ip6_gre: skb_push... |
1309 1310 |
struct ipv6hdr *ipv6h; __be16 *p; |
c12b395a4 gre: Support GRE ... |
1311 |
|
76cc0d328 ip6_gre: skb_push... |
1312 1313 1314 1315 |
ipv6h = skb_push(skb, t->hlen + sizeof(*ipv6h)); ip6_flow_hdr(ipv6h, 0, ip6_make_flowlabel(dev_net(dev), skb, t->fl.u.ip6.flowlabel, true, &t->fl.u.ip6)); |
c12b395a4 gre: Support GRE ... |
1316 1317 1318 1319 |
ipv6h->hop_limit = t->parms.hop_limit; ipv6h->nexthdr = NEXTHDR_GRE; ipv6h->saddr = t->parms.laddr; ipv6h->daddr = t->parms.raddr; |
76cc0d328 ip6_gre: skb_push... |
1320 1321 1322 |
p = (__be16 *)(ipv6h + 1); p[0] = t->parms.o_flags; p[1] = htons(type); |
c12b395a4 gre: Support GRE ... |
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 |
/* * Set the source hardware address. */ if (saddr) memcpy(&ipv6h->saddr, saddr, sizeof(struct in6_addr)); if (daddr) memcpy(&ipv6h->daddr, daddr, sizeof(struct in6_addr)); if (!ipv6_addr_any(&ipv6h->daddr)) return t->hlen; return -t->hlen; } |
c12b395a4 gre: Support GRE ... |
1337 1338 |
static const struct header_ops ip6gre_header_ops = { .create = ip6gre_header, |
c12b395a4 gre: Support GRE ... |
1339 1340 1341 1342 1343 1344 1345 |
}; static const struct net_device_ops ip6gre_netdev_ops = { .ndo_init = ip6gre_tunnel_init, .ndo_uninit = ip6gre_tunnel_uninit, .ndo_start_xmit = ip6gre_tunnel_xmit, .ndo_do_ioctl = ip6gre_tunnel_ioctl, |
b05229f44 gre6: Cleanup GRE... |
1346 |
.ndo_change_mtu = ip6_tnl_change_mtu, |
f61dd388a Tunneling: use IP... |
1347 |
.ndo_get_stats64 = ip_tunnel_get_stats64, |
ecf2c06a8 ip6tnl,gre6,vti6:... |
1348 |
.ndo_get_iflink = ip6_tnl_get_iflink, |
c12b395a4 gre: Support GRE ... |
1349 1350 1351 1352 |
}; static void ip6gre_dev_free(struct net_device *dev) { |
cdf3464e6 ipv6: Fix dst_ent... |
1353 |
struct ip6_tnl *t = netdev_priv(dev); |
0c1dd2a16 net: ipv6/gre: Ad... |
1354 |
gro_cells_destroy(&t->gro_cells); |
607f725f6 net: replace dst_... |
1355 |
dst_cache_destroy(&t->dst_cache); |
c12b395a4 gre: Support GRE ... |
1356 |
free_percpu(dev->tstats); |
c12b395a4 gre: Support GRE ... |
1357 1358 1359 1360 |
} static void ip6gre_tunnel_setup(struct net_device *dev) { |
c12b395a4 gre: Support GRE ... |
1361 |
dev->netdev_ops = &ip6gre_netdev_ops; |
cf124db56 net: Fix inconsis... |
1362 1363 |
dev->needs_free_netdev = true; dev->priv_destructor = ip6gre_dev_free; |
c12b395a4 gre: Support GRE ... |
1364 1365 |
dev->type = ARPHRD_IP6GRE; |
b05229f44 gre6: Cleanup GRE... |
1366 |
|
c12b395a4 gre: Support GRE ... |
1367 |
dev->flags |= IFF_NOARP; |
c12b395a4 gre: Support GRE ... |
1368 |
dev->addr_len = sizeof(struct in6_addr); |
028758788 net: better IFF_X... |
1369 |
netif_keep_dst(dev); |
45ce0fd19 net/ipv6: support... |
1370 1371 1372 |
/* This perm addr will be used as interface identifier by IPv6 */ dev->addr_assign_type = NET_ADDR_RANDOM; eth_random_addr(dev->perm_addr); |
c12b395a4 gre: Support GRE ... |
1373 |
} |
e5a9336ad ip6_gre: fix devi... |
1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 |
#define GRE6_FEATURES (NETIF_F_SG | \ NETIF_F_FRAGLIST | \ NETIF_F_HIGHDMA | \ NETIF_F_HW_CSUM) static void ip6gre_tnl_init_features(struct net_device *dev) { struct ip6_tnl *nt = netdev_priv(dev); dev->features |= GRE6_FEATURES; dev->hw_features |= GRE6_FEATURES; if (!(nt->parms.o_flags & TUNNEL_SEQ)) { /* TCP offload with GRE SEQ is not supported, nor * can we support 2 levels of outer headers requiring * an update. */ if (!(nt->parms.o_flags & TUNNEL_CSUM) || nt->encap.type == TUNNEL_ENCAP_NONE) { dev->features |= NETIF_F_GSO_SOFTWARE; dev->hw_features |= NETIF_F_GSO_SOFTWARE; } /* Can use a lockless transmit, unless we generate * output sequences */ dev->features |= NETIF_F_LLTX; } } |
a3c119d39 ipv6: Refactor co... |
1403 |
static int ip6gre_tunnel_init_common(struct net_device *dev) |
c12b395a4 gre: Support GRE ... |
1404 1405 |
{ struct ip6_tnl *tunnel; |
cdf3464e6 ipv6: Fix dst_ent... |
1406 |
int ret; |
b05229f44 gre6: Cleanup GRE... |
1407 |
int t_hlen; |
c12b395a4 gre: Support GRE ... |
1408 1409 1410 1411 |
tunnel = netdev_priv(dev); tunnel->dev = dev; |
0bd876282 ip6tnl: add x-net... |
1412 |
tunnel->net = dev_net(dev); |
c12b395a4 gre: Support GRE ... |
1413 |
strcpy(tunnel->parms.name, dev->name); |
a3c119d39 ipv6: Refactor co... |
1414 1415 1416 |
dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); if (!dev->tstats) return -ENOMEM; |
607f725f6 net: replace dst_... |
1417 |
ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL); |
0c1dd2a16 net: ipv6/gre: Ad... |
1418 1419 1420 1421 1422 1423 |
if (ret) goto cleanup_alloc_pcpu_stats; ret = gro_cells_init(&tunnel->gro_cells, dev); if (ret) goto cleanup_dst_cache_init; |
cdf3464e6 ipv6: Fix dst_ent... |
1424 |
|
a483373ea net: ip6_gre: Spl... |
1425 |
t_hlen = ip6gre_calc_hlen(tunnel); |
db2ec95d1 ip6_gre: Fix MTU ... |
1426 |
dev->mtu = ETH_DATA_LEN - t_hlen; |
1b227e536 ip6_gre: Fix MTU ... |
1427 1428 |
if (dev->type == ARPHRD_ETHER) dev->mtu -= ETH_HLEN; |
b05229f44 gre6: Cleanup GRE... |
1429 1430 |
if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) dev->mtu -= 8; |
6712abc16 ip6_gre: add ip6 ... |
1431 |
if (tunnel->parms.collect_md) { |
6712abc16 ip6_gre: add ip6 ... |
1432 1433 |
netif_keep_dst(dev); } |
e5a9336ad ip6_gre: fix devi... |
1434 |
ip6gre_tnl_init_features(dev); |
6712abc16 ip6_gre: add ip6 ... |
1435 |
|
a3c119d39 ipv6: Refactor co... |
1436 |
return 0; |
0c1dd2a16 net: ipv6/gre: Ad... |
1437 1438 1439 1440 1441 1442 1443 |
cleanup_dst_cache_init: dst_cache_destroy(&tunnel->dst_cache); cleanup_alloc_pcpu_stats: free_percpu(dev->tstats); dev->tstats = NULL; return ret; |
a3c119d39 ipv6: Refactor co... |
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 |
} static int ip6gre_tunnel_init(struct net_device *dev) { struct ip6_tnl *tunnel; int ret; ret = ip6gre_tunnel_init_common(dev); if (ret) return ret; tunnel = netdev_priv(dev); |
6712abc16 ip6_gre: add ip6 ... |
1456 1457 |
if (tunnel->parms.collect_md) return 0; |
c12b395a4 gre: Support GRE ... |
1458 1459 1460 1461 1462 |
memcpy(dev->dev_addr, &tunnel->parms.laddr, sizeof(struct in6_addr)); memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr)); if (ipv6_addr_any(&tunnel->parms.raddr)) dev->header_ops = &ip6gre_header_ops; |
c12b395a4 gre: Support GRE ... |
1463 1464 1465 1466 1467 1468 1469 1470 |
return 0; } static void ip6gre_fb_tunnel_init(struct net_device *dev) { struct ip6_tnl *tunnel = netdev_priv(dev); tunnel->dev = dev; |
0bd876282 ip6tnl: add x-net... |
1471 |
tunnel->net = dev_net(dev); |
c12b395a4 gre: Support GRE ... |
1472 1473 1474 1475 1476 1477 |
strcpy(tunnel->parms.name, dev->name); tunnel->hlen = sizeof(struct ipv6hdr) + 4; dev_hold(dev); } |
c12b395a4 gre: Support GRE ... |
1478 |
static struct inet6_protocol ip6gre_protocol __read_mostly = { |
308edfdf1 gre6: Cleanup GRE... |
1479 |
.handler = gre_rcv, |
c12b395a4 gre: Support GRE ... |
1480 1481 1482 |
.err_handler = ip6gre_err, .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL, }; |
22f08069e ip6gre: add x-net... |
1483 |
static void ip6gre_destroy_tunnels(struct net *net, struct list_head *head) |
c12b395a4 gre: Support GRE ... |
1484 |
{ |
22f08069e ip6gre: add x-net... |
1485 1486 |
struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); struct net_device *dev, *aux; |
c12b395a4 gre: Support GRE ... |
1487 |
int prio; |
22f08069e ip6gre: add x-net... |
1488 1489 |
for_each_netdev_safe(net, dev, aux) if (dev->rtnl_link_ops == &ip6gre_link_ops || |
5a963eb61 ip6_gre: Add ERSP... |
1490 1491 |
dev->rtnl_link_ops == &ip6gre_tap_ops || dev->rtnl_link_ops == &ip6erspan_tap_ops) |
22f08069e ip6gre: add x-net... |
1492 |
unregister_netdevice_queue(dev, head); |
c12b395a4 gre: Support GRE ... |
1493 1494 |
for (prio = 0; prio < 4; prio++) { int h; |
e87a8f24c net: resolve symb... |
1495 |
for (h = 0; h < IP6_GRE_HASH_SIZE; h++) { |
c12b395a4 gre: Support GRE ... |
1496 1497 1498 |
struct ip6_tnl *t; t = rtnl_dereference(ign->tunnels[prio][h]); |
53b24b8f9 ipv6: coding styl... |
1499 |
while (t) { |
22f08069e ip6gre: add x-net... |
1500 1501 1502 1503 1504 1505 |
/* If dev is in the same netns, it has already * been added to the list by the previous loop. */ if (!net_eq(dev_net(t->dev), net)) unregister_netdevice_queue(t->dev, head); |
c12b395a4 gre: Support GRE ... |
1506 1507 1508 1509 1510 1511 1512 1513 1514 |
t = rtnl_dereference(t->next); } } } } static int __net_init ip6gre_init_net(struct net *net) { struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); |
46ef5b89e ip6_gre: fix null... |
1515 |
struct net_device *ndev; |
c12b395a4 gre: Support GRE ... |
1516 |
int err; |
79134e6ce net: do not creat... |
1517 1518 |
if (!net_has_fallback_tunnels(net)) return 0; |
46ef5b89e ip6_gre: fix null... |
1519 1520 1521 |
ndev = alloc_netdev(sizeof(struct ip6_tnl), "ip6gre0", NET_NAME_UNKNOWN, ip6gre_tunnel_setup); if (!ndev) { |
c12b395a4 gre: Support GRE ... |
1522 1523 1524 |
err = -ENOMEM; goto err_alloc_dev; } |
46ef5b89e ip6_gre: fix null... |
1525 |
ign->fb_tunnel_dev = ndev; |
c12b395a4 gre: Support GRE ... |
1526 |
dev_net_set(ign->fb_tunnel_dev, net); |
22f08069e ip6gre: add x-net... |
1527 1528 1529 1530 |
/* FB netdevice is special: we have one, and only one per netns. * Allowing to move it to another netns is clearly unsafe. */ ign->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL; |
c12b395a4 gre: Support GRE ... |
1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 |
ip6gre_fb_tunnel_init(ign->fb_tunnel_dev); ign->fb_tunnel_dev->rtnl_link_ops = &ip6gre_link_ops; err = register_netdev(ign->fb_tunnel_dev); if (err) goto err_reg_dev; rcu_assign_pointer(ign->tunnels_wc[0], netdev_priv(ign->fb_tunnel_dev)); return 0; err_reg_dev: |
46ef5b89e ip6_gre: fix null... |
1544 |
free_netdev(ndev); |
c12b395a4 gre: Support GRE ... |
1545 1546 1547 |
err_alloc_dev: return err; } |
bb401caef ipv6: speedup ipv... |
1548 |
static void __net_exit ip6gre_exit_batch_net(struct list_head *net_list) |
c12b395a4 gre: Support GRE ... |
1549 |
{ |
bb401caef ipv6: speedup ipv... |
1550 |
struct net *net; |
c12b395a4 gre: Support GRE ... |
1551 |
LIST_HEAD(list); |
c12b395a4 gre: Support GRE ... |
1552 |
rtnl_lock(); |
bb401caef ipv6: speedup ipv... |
1553 1554 |
list_for_each_entry(net, net_list, exit_list) ip6gre_destroy_tunnels(net, &list); |
c12b395a4 gre: Support GRE ... |
1555 1556 1557 1558 1559 1560 |
unregister_netdevice_many(&list); rtnl_unlock(); } static struct pernet_operations ip6gre_net_ops = { .init = ip6gre_init_net, |
bb401caef ipv6: speedup ipv... |
1561 |
.exit_batch = ip6gre_exit_batch_net, |
c12b395a4 gre: Support GRE ... |
1562 1563 1564 |
.id = &ip6gre_net_id, .size = sizeof(struct ip6gre_net), }; |
a8b8a889e net: add netlink_... |
1565 1566 |
static int ip6gre_tunnel_validate(struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) |
c12b395a4 gre: Support GRE ... |
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 |
{ __be16 flags; if (!data) return 0; flags = 0; if (data[IFLA_GRE_IFLAGS]) flags |= nla_get_be16(data[IFLA_GRE_IFLAGS]); if (data[IFLA_GRE_OFLAGS]) flags |= nla_get_be16(data[IFLA_GRE_OFLAGS]); if (flags & (GRE_VERSION|GRE_ROUTING)) return -EINVAL; return 0; } |
a8b8a889e net: add netlink_... |
1583 1584 |
static int ip6gre_tap_validate(struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) |
c12b395a4 gre: Support GRE ... |
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 |
{ struct in6_addr daddr; if (tb[IFLA_ADDRESS]) { if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) return -EINVAL; if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) return -EADDRNOTAVAIL; } if (!data) goto out; if (data[IFLA_GRE_REMOTE]) { |
67b61f6c1 netlink: implemen... |
1599 |
daddr = nla_get_in6_addr(data[IFLA_GRE_REMOTE]); |
c12b395a4 gre: Support GRE ... |
1600 1601 1602 1603 1604 |
if (ipv6_addr_any(&daddr)) return -EINVAL; } out: |
a8b8a889e net: add netlink_... |
1605 |
return ip6gre_tunnel_validate(tb, data, extack); |
c12b395a4 gre: Support GRE ... |
1606 |
} |
5a963eb61 ip6_gre: Add ERSP... |
1607 1608 1609 1610 |
static int ip6erspan_tap_validate(struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { __be16 flags = 0; |
94d7d8f29 ip6_gre: add ersp... |
1611 |
int ret, ver = 0; |
5a963eb61 ip6_gre: Add ERSP... |
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 |
if (!data) return 0; ret = ip6gre_tap_validate(tb, data, extack); if (ret) return ret; /* ERSPAN should only have GRE sequence and key flag */ if (data[IFLA_GRE_OFLAGS]) flags |= nla_get_be16(data[IFLA_GRE_OFLAGS]); if (data[IFLA_GRE_IFLAGS]) flags |= nla_get_be16(data[IFLA_GRE_IFLAGS]); if (!data[IFLA_GRE_COLLECT_METADATA] && flags != (GRE_SEQ | GRE_KEY)) return -EINVAL; /* ERSPAN Session ID only has 10-bit. Since we reuse * 32-bit key field as ID, check it's range. */ if (data[IFLA_GRE_IKEY] && (ntohl(nla_get_be32(data[IFLA_GRE_IKEY])) & ~ID_MASK)) return -EINVAL; if (data[IFLA_GRE_OKEY] && (ntohl(nla_get_be32(data[IFLA_GRE_OKEY])) & ~ID_MASK)) return -EINVAL; |
94d7d8f29 ip6_gre: add ersp... |
1639 1640 1641 |
if (data[IFLA_GRE_ERSPAN_VER]) { ver = nla_get_u8(data[IFLA_GRE_ERSPAN_VER]); if (ver != 1 && ver != 2) |
5a963eb61 ip6_gre: Add ERSP... |
1642 1643 |
return -EINVAL; } |
94d7d8f29 ip6_gre: add ersp... |
1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 |
if (ver == 1) { if (data[IFLA_GRE_ERSPAN_INDEX]) { u32 index = nla_get_u32(data[IFLA_GRE_ERSPAN_INDEX]); if (index & ~INDEX_MASK) return -EINVAL; } } else if (ver == 2) { if (data[IFLA_GRE_ERSPAN_DIR]) { u16 dir = nla_get_u8(data[IFLA_GRE_ERSPAN_DIR]); if (dir & ~(DIR_MASK >> DIR_OFFSET)) return -EINVAL; } if (data[IFLA_GRE_ERSPAN_HWID]) { u16 hwid = nla_get_u16(data[IFLA_GRE_ERSPAN_HWID]); if (hwid & ~(HWID_MASK >> HWID_OFFSET)) return -EINVAL; } } |
5a963eb61 ip6_gre: Add ERSP... |
1667 1668 |
return 0; } |
c12b395a4 gre: Support GRE ... |
1669 |
|
4974d5f67 net: ip6_gre: ini... |
1670 1671 1672 |
static void ip6erspan_set_version(struct nlattr *data[], struct __ip6_tnl_parm *parms) { |
efcc9bcaf net: ip6_gre: fix... |
1673 1674 |
if (!data) return; |
4974d5f67 net: ip6_gre: ini... |
1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 |
parms->erspan_ver = 1; if (data[IFLA_GRE_ERSPAN_VER]) parms->erspan_ver = nla_get_u8(data[IFLA_GRE_ERSPAN_VER]); if (parms->erspan_ver == 1) { if (data[IFLA_GRE_ERSPAN_INDEX]) parms->index = nla_get_u32(data[IFLA_GRE_ERSPAN_INDEX]); } else if (parms->erspan_ver == 2) { if (data[IFLA_GRE_ERSPAN_DIR]) parms->dir = nla_get_u8(data[IFLA_GRE_ERSPAN_DIR]); if (data[IFLA_GRE_ERSPAN_HWID]) parms->hwid = nla_get_u16(data[IFLA_GRE_ERSPAN_HWID]); } } |
c12b395a4 gre: Support GRE ... |
1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 |
static void ip6gre_netlink_parms(struct nlattr *data[], struct __ip6_tnl_parm *parms) { memset(parms, 0, sizeof(*parms)); if (!data) return; if (data[IFLA_GRE_LINK]) parms->link = nla_get_u32(data[IFLA_GRE_LINK]); if (data[IFLA_GRE_IFLAGS]) |
f41fe3c2a gre6: Fix flag tr... |
1701 1702 |
parms->i_flags = gre_flags_to_tnl_flags( nla_get_be16(data[IFLA_GRE_IFLAGS])); |
c12b395a4 gre: Support GRE ... |
1703 1704 |
if (data[IFLA_GRE_OFLAGS]) |
f41fe3c2a gre6: Fix flag tr... |
1705 1706 |
parms->o_flags = gre_flags_to_tnl_flags( nla_get_be16(data[IFLA_GRE_OFLAGS])); |
c12b395a4 gre: Support GRE ... |
1707 1708 1709 1710 1711 1712 1713 1714 |
if (data[IFLA_GRE_IKEY]) parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]); if (data[IFLA_GRE_OKEY]) parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]); if (data[IFLA_GRE_LOCAL]) |
67b61f6c1 netlink: implemen... |
1715 |
parms->laddr = nla_get_in6_addr(data[IFLA_GRE_LOCAL]); |
c12b395a4 gre: Support GRE ... |
1716 1717 |
if (data[IFLA_GRE_REMOTE]) |
67b61f6c1 netlink: implemen... |
1718 |
parms->raddr = nla_get_in6_addr(data[IFLA_GRE_REMOTE]); |
c12b395a4 gre: Support GRE ... |
1719 1720 1721 1722 1723 1724 1725 1726 |
if (data[IFLA_GRE_TTL]) parms->hop_limit = nla_get_u8(data[IFLA_GRE_TTL]); if (data[IFLA_GRE_ENCAP_LIMIT]) parms->encap_limit = nla_get_u8(data[IFLA_GRE_ENCAP_LIMIT]); if (data[IFLA_GRE_FLOWINFO]) |
c2675de44 gre: use nla_get_... |
1727 |
parms->flowinfo = nla_get_be32(data[IFLA_GRE_FLOWINFO]); |
c12b395a4 gre: Support GRE ... |
1728 1729 1730 |
if (data[IFLA_GRE_FLAGS]) parms->flags = nla_get_u32(data[IFLA_GRE_FLAGS]); |
0a473b82c ip6_tunnel: Allow... |
1731 1732 1733 |
if (data[IFLA_GRE_FWMARK]) parms->fwmark = nla_get_u32(data[IFLA_GRE_FWMARK]); |
5a963eb61 ip6_gre: Add ERSP... |
1734 |
|
6712abc16 ip6_gre: add ip6 ... |
1735 1736 |
if (data[IFLA_GRE_COLLECT_METADATA]) parms->collect_md = true; |
c12b395a4 gre: Support GRE ... |
1737 1738 1739 1740 |
} static int ip6gre_tap_init(struct net_device *dev) { |
a3c119d39 ipv6: Refactor co... |
1741 |
int ret; |
c12b395a4 gre: Support GRE ... |
1742 |
|
a3c119d39 ipv6: Refactor co... |
1743 1744 1745 |
ret = ip6gre_tunnel_init_common(dev); if (ret) return ret; |
c12b395a4 gre: Support GRE ... |
1746 |
|
0a46baaf6 ip6gre: Allow liv... |
1747 |
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
c12b395a4 gre: Support GRE ... |
1748 1749 1750 1751 1752 1753 1754 1755 1756 |
return 0; } static const struct net_device_ops ip6gre_tap_netdev_ops = { .ndo_init = ip6gre_tap_init, .ndo_uninit = ip6gre_tunnel_uninit, .ndo_start_xmit = ip6gre_tunnel_xmit, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, |
b05229f44 gre6: Cleanup GRE... |
1757 |
.ndo_change_mtu = ip6_tnl_change_mtu, |
f61dd388a Tunneling: use IP... |
1758 |
.ndo_get_stats64 = ip_tunnel_get_stats64, |
ecf2c06a8 ip6tnl,gre6,vti6:... |
1759 |
.ndo_get_iflink = ip6_tnl_get_iflink, |
c12b395a4 gre: Support GRE ... |
1760 |
}; |
2d665034f net: ip6_gre: Fix... |
1761 1762 1763 1764 1765 1766 1767 1768 1769 |
static int ip6erspan_calc_hlen(struct ip6_tnl *tunnel) { int t_hlen; tunnel->tun_hlen = 8; tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen + erspan_hdr_len(tunnel->parms.erspan_ver); t_hlen = tunnel->hlen + sizeof(struct ipv6hdr); |
eb95f52fc net: ipv6_gre: Fi... |
1770 |
tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen; |
2d665034f net: ip6_gre: Fix... |
1771 1772 |
return t_hlen; } |
5a963eb61 ip6_gre: Add ERSP... |
1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 |
static int ip6erspan_tap_init(struct net_device *dev) { struct ip6_tnl *tunnel; int t_hlen; int ret; tunnel = netdev_priv(dev); tunnel->dev = dev; tunnel->net = dev_net(dev); strcpy(tunnel->parms.name, dev->name); dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); if (!dev->tstats) return -ENOMEM; ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL); |
0c1dd2a16 net: ipv6/gre: Ad... |
1790 1791 1792 1793 1794 1795 |
if (ret) goto cleanup_alloc_pcpu_stats; ret = gro_cells_init(&tunnel->gro_cells, dev); if (ret) goto cleanup_dst_cache_init; |
5a963eb61 ip6_gre: Add ERSP... |
1796 |
|
2d665034f net: ip6_gre: Fix... |
1797 |
t_hlen = ip6erspan_calc_hlen(tunnel); |
5a963eb61 ip6_gre: Add ERSP... |
1798 1799 1800 1801 1802 1803 1804 |
dev->mtu = ETH_DATA_LEN - t_hlen; if (dev->type == ARPHRD_ETHER) dev->mtu -= ETH_HLEN; if (!(tunnel->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT)) dev->mtu -= 8; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
2d665034f net: ip6_gre: Fix... |
1805 |
ip6erspan_tnl_link_config(tunnel, 1); |
5a963eb61 ip6_gre: Add ERSP... |
1806 1807 |
return 0; |
0c1dd2a16 net: ipv6/gre: Ad... |
1808 1809 1810 1811 1812 1813 1814 |
cleanup_dst_cache_init: dst_cache_destroy(&tunnel->dst_cache); cleanup_alloc_pcpu_stats: free_percpu(dev->tstats); dev->tstats = NULL; return ret; |
5a963eb61 ip6_gre: Add ERSP... |
1815 1816 1817 1818 |
} static const struct net_device_ops ip6erspan_netdev_ops = { .ndo_init = ip6erspan_tap_init, |
b80d0b93b net: ip6_gre: fix... |
1819 |
.ndo_uninit = ip6erspan_tunnel_uninit, |
5a963eb61 ip6_gre: Add ERSP... |
1820 1821 1822 1823 1824 1825 1826 |
.ndo_start_xmit = ip6erspan_tunnel_xmit, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, .ndo_change_mtu = ip6_tnl_change_mtu, .ndo_get_stats64 = ip_tunnel_get_stats64, .ndo_get_iflink = ip6_tnl_get_iflink, }; |
c12b395a4 gre: Support GRE ... |
1827 1828 1829 1830 |
static void ip6gre_tap_setup(struct net_device *dev) { ether_setup(dev); |
2c52129a7 ip6_gre: remove t... |
1831 |
dev->max_mtu = 0; |
c12b395a4 gre: Support GRE ... |
1832 |
dev->netdev_ops = &ip6gre_tap_netdev_ops; |
cf124db56 net: Fix inconsis... |
1833 1834 |
dev->needs_free_netdev = true; dev->priv_destructor = ip6gre_dev_free; |
c12b395a4 gre: Support GRE ... |
1835 |
|
d13b161c2 gre: clear IFF_TX... |
1836 |
dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
0a46baaf6 ip6gre: Allow liv... |
1837 |
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
2d40557cc ip6_gre: ip6gre_t... |
1838 |
netif_keep_dst(dev); |
c12b395a4 gre: Support GRE ... |
1839 |
} |
1faf3d9f7 ip6_gre: Add supp... |
1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 |
static bool ip6gre_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_GRE_ENCAP_TYPE]) { ret = true; ipencap->type = nla_get_u16(data[IFLA_GRE_ENCAP_TYPE]); } if (data[IFLA_GRE_ENCAP_FLAGS]) { ret = true; ipencap->flags = nla_get_u16(data[IFLA_GRE_ENCAP_FLAGS]); } if (data[IFLA_GRE_ENCAP_SPORT]) { ret = true; ipencap->sport = nla_get_be16(data[IFLA_GRE_ENCAP_SPORT]); } if (data[IFLA_GRE_ENCAP_DPORT]) { ret = true; ipencap->dport = nla_get_be16(data[IFLA_GRE_ENCAP_DPORT]); } return ret; } |
7fa38a7c8 net: ip6_gre: Spl... |
1872 1873 1874 |
static int ip6gre_newlink_common(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) |
c12b395a4 gre: Support GRE ... |
1875 1876 |
{ struct ip6_tnl *nt; |
1faf3d9f7 ip6_gre: Add supp... |
1877 |
struct ip_tunnel_encap ipencap; |
c12b395a4 gre: Support GRE ... |
1878 1879 1880 |
int err; nt = netdev_priv(dev); |
1faf3d9f7 ip6_gre: Add supp... |
1881 1882 1883 1884 1885 1886 1887 |
if (ip6gre_netlink_encap_parms(data, &ipencap)) { int err = ip6_tnl_encap_setup(nt, &ipencap); if (err < 0) return err; } |
c12b395a4 gre: Support GRE ... |
1888 1889 1890 1891 |
if (dev->type == ARPHRD_ETHER && !tb[IFLA_ADDRESS]) eth_hw_addr_random(dev); nt->dev = dev; |
0bd876282 ip6tnl: add x-net... |
1892 |
nt->net = dev_net(dev); |
c12b395a4 gre: Support GRE ... |
1893 |
|
c12b395a4 gre: Support GRE ... |
1894 1895 1896 |
err = register_netdevice(dev); if (err) goto out; |
128bb975d ip6_gre: init dev... |
1897 1898 |
if (tb[IFLA_MTU]) ip6_tnl_change_mtu(dev, nla_get_u32(tb[IFLA_MTU])); |
c12b395a4 gre: Support GRE ... |
1899 |
dev_hold(dev); |
c12b395a4 gre: Support GRE ... |
1900 1901 1902 1903 |
out: return err; } |
7fa38a7c8 net: ip6_gre: Spl... |
1904 1905 1906 1907 |
static int ip6gre_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { |
7fa38a7c8 net: ip6_gre: Spl... |
1908 1909 |
struct ip6_tnl *nt = netdev_priv(dev); struct net *net = dev_net(dev); |
b80d0b93b net: ip6_gre: fix... |
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 |
struct ip6gre_net *ign; int err; ip6gre_netlink_parms(data, &nt->parms); ign = net_generic(net, ip6gre_net_id); if (nt->parms.collect_md) { if (rtnl_dereference(ign->collect_md_tun)) return -EEXIST; } else { if (ip6gre_tunnel_find(net, &nt->parms, dev->type)) return -EEXIST; } |
7fa38a7c8 net: ip6_gre: Spl... |
1923 |
|
b80d0b93b net: ip6_gre: fix... |
1924 |
err = ip6gre_newlink_common(src_net, dev, tb, data, extack); |
7fa38a7c8 net: ip6_gre: Spl... |
1925 1926 |
if (!err) { ip6gre_tnl_link_config(nt, !tb[IFLA_MTU]); |
b80d0b93b net: ip6_gre: fix... |
1927 |
ip6gre_tunnel_link_md(ign, nt); |
7fa38a7c8 net: ip6_gre: Spl... |
1928 1929 1930 1931 |
ip6gre_tunnel_link(net_generic(net, ip6gre_net_id), nt); } return err; } |
c8632fc30 net: ip6_gre: Spl... |
1932 1933 1934 1935 |
static struct ip6_tnl * ip6gre_changelink_common(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct __ip6_tnl_parm *p_p, struct netlink_ext_ack *extack) |
c12b395a4 gre: Support GRE ... |
1936 |
{ |
22f08069e ip6gre: add x-net... |
1937 1938 |
struct ip6_tnl *t, *nt = netdev_priv(dev); struct net *net = nt->net; |
c12b395a4 gre: Support GRE ... |
1939 |
struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); |
1faf3d9f7 ip6_gre: Add supp... |
1940 |
struct ip_tunnel_encap ipencap; |
c12b395a4 gre: Support GRE ... |
1941 1942 |
if (dev == ign->fb_tunnel_dev) |
c8632fc30 net: ip6_gre: Spl... |
1943 |
return ERR_PTR(-EINVAL); |
c12b395a4 gre: Support GRE ... |
1944 |
|
1faf3d9f7 ip6_gre: Add supp... |
1945 1946 1947 1948 |
if (ip6gre_netlink_encap_parms(data, &ipencap)) { int err = ip6_tnl_encap_setup(nt, &ipencap); if (err < 0) |
c8632fc30 net: ip6_gre: Spl... |
1949 |
return ERR_PTR(err); |
1faf3d9f7 ip6_gre: Add supp... |
1950 |
} |
c8632fc30 net: ip6_gre: Spl... |
1951 |
ip6gre_netlink_parms(data, p_p); |
c12b395a4 gre: Support GRE ... |
1952 |
|
c8632fc30 net: ip6_gre: Spl... |
1953 |
t = ip6gre_tunnel_locate(net, p_p, 0); |
c12b395a4 gre: Support GRE ... |
1954 1955 1956 |
if (t) { if (t->dev != dev) |
c8632fc30 net: ip6_gre: Spl... |
1957 |
return ERR_PTR(-EEXIST); |
c12b395a4 gre: Support GRE ... |
1958 1959 |
} else { t = nt; |
c12b395a4 gre: Support GRE ... |
1960 |
} |
c8632fc30 net: ip6_gre: Spl... |
1961 1962 1963 1964 1965 1966 1967 |
return t; } static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { |
ab5098fa2 ip6_gre: fix tunn... |
1968 1969 |
struct ip6_tnl *t = netdev_priv(dev); struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id); |
c8632fc30 net: ip6_gre: Spl... |
1970 |
struct __ip6_tnl_parm p; |
c8632fc30 net: ip6_gre: Spl... |
1971 1972 1973 1974 |
t = ip6gre_changelink_common(dev, tb, data, &p, extack); if (IS_ERR(t)) return PTR_ERR(t); |
b80d0b93b net: ip6_gre: fix... |
1975 |
ip6gre_tunnel_unlink_md(ign, t); |
6a61d4dbf gre6: allow to up... |
1976 1977 |
ip6gre_tunnel_unlink(ign, t); ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]); |
b80d0b93b net: ip6_gre: fix... |
1978 |
ip6gre_tunnel_link_md(ign, t); |
6a61d4dbf gre6: allow to up... |
1979 |
ip6gre_tunnel_link(ign, t); |
c12b395a4 gre: Support GRE ... |
1980 1981 |
return 0; } |
54d63f787 ip6_gre: don't al... |
1982 1983 1984 1985 1986 1987 1988 1989 |
static void ip6gre_dellink(struct net_device *dev, struct list_head *head) { struct net *net = dev_net(dev); struct ip6gre_net *ign = net_generic(net, ip6gre_net_id); if (dev != ign->fb_tunnel_dev) unregister_netdevice_queue(dev, head); } |
c12b395a4 gre: Support GRE ... |
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 |
static size_t ip6gre_get_size(const struct net_device *dev) { return /* IFLA_GRE_LINK */ nla_total_size(4) + /* IFLA_GRE_IFLAGS */ nla_total_size(2) + /* IFLA_GRE_OFLAGS */ nla_total_size(2) + /* IFLA_GRE_IKEY */ nla_total_size(4) + /* IFLA_GRE_OKEY */ nla_total_size(4) + /* IFLA_GRE_LOCAL */ |
a37541331 gre6: fix rtnl du... |
2004 |
nla_total_size(sizeof(struct in6_addr)) + |
c12b395a4 gre: Support GRE ... |
2005 |
/* IFLA_GRE_REMOTE */ |
a37541331 gre6: fix rtnl du... |
2006 |
nla_total_size(sizeof(struct in6_addr)) + |
c12b395a4 gre: Support GRE ... |
2007 2008 |
/* IFLA_GRE_TTL */ nla_total_size(1) + |
c12b395a4 gre: Support GRE ... |
2009 2010 2011 2012 2013 2014 |
/* IFLA_GRE_ENCAP_LIMIT */ nla_total_size(1) + /* IFLA_GRE_FLOWINFO */ nla_total_size(4) + /* IFLA_GRE_FLAGS */ nla_total_size(4) + |
1faf3d9f7 ip6_gre: Add supp... |
2015 2016 2017 2018 2019 2020 2021 2022 |
/* IFLA_GRE_ENCAP_TYPE */ nla_total_size(2) + /* IFLA_GRE_ENCAP_FLAGS */ nla_total_size(2) + /* IFLA_GRE_ENCAP_SPORT */ nla_total_size(2) + /* IFLA_GRE_ENCAP_DPORT */ nla_total_size(2) + |
6712abc16 ip6_gre: add ip6 ... |
2023 2024 |
/* IFLA_GRE_COLLECT_METADATA */ nla_total_size(0) + |
0a473b82c ip6_tunnel: Allow... |
2025 2026 |
/* IFLA_GRE_FWMARK */ nla_total_size(4) + |
5a963eb61 ip6_gre: Add ERSP... |
2027 2028 |
/* IFLA_GRE_ERSPAN_INDEX */ nla_total_size(4) + |
c12b395a4 gre: Support GRE ... |
2029 2030 2031 2032 2033 2034 2035 |
0; } static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); struct __ip6_tnl_parm *p = &t->parms; |
c706863bc net: ip6_gre: alw... |
2036 |
__be16 o_flags = p->o_flags; |
103d0244d net: ip6_gre: do ... |
2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 |
if (p->erspan_ver == 1 || p->erspan_ver == 2) { if (!p->collect_md) o_flags |= TUNNEL_KEY; if (nla_put_u8(skb, IFLA_GRE_ERSPAN_VER, p->erspan_ver)) goto nla_put_failure; if (p->erspan_ver == 1) { if (nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, p->index)) goto nla_put_failure; } else { if (nla_put_u8(skb, IFLA_GRE_ERSPAN_DIR, p->dir)) goto nla_put_failure; if (nla_put_u16(skb, IFLA_GRE_ERSPAN_HWID, p->hwid)) goto nla_put_failure; } } |
c12b395a4 gre: Support GRE ... |
2054 2055 |
if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) || |
f41fe3c2a gre6: Fix flag tr... |
2056 2057 2058 |
nla_put_be16(skb, IFLA_GRE_IFLAGS, gre_tnl_flags_to_gre_flags(p->i_flags)) || nla_put_be16(skb, IFLA_GRE_OFLAGS, |
c706863bc net: ip6_gre: alw... |
2059 |
gre_tnl_flags_to_gre_flags(o_flags)) || |
c12b395a4 gre: Support GRE ... |
2060 2061 |
nla_put_be32(skb, IFLA_GRE_IKEY, p->i_key) || nla_put_be32(skb, IFLA_GRE_OKEY, p->o_key) || |
930345ea6 netlink: implemen... |
2062 2063 |
nla_put_in6_addr(skb, IFLA_GRE_LOCAL, &p->laddr) || nla_put_in6_addr(skb, IFLA_GRE_REMOTE, &p->raddr) || |
c12b395a4 gre: Support GRE ... |
2064 |
nla_put_u8(skb, IFLA_GRE_TTL, p->hop_limit) || |
c12b395a4 gre: Support GRE ... |
2065 2066 |
nla_put_u8(skb, IFLA_GRE_ENCAP_LIMIT, p->encap_limit) || nla_put_be32(skb, IFLA_GRE_FLOWINFO, p->flowinfo) || |
0a473b82c ip6_tunnel: Allow... |
2067 |
nla_put_u32(skb, IFLA_GRE_FLAGS, p->flags) || |
103d0244d net: ip6_gre: do ... |
2068 |
nla_put_u32(skb, IFLA_GRE_FWMARK, p->fwmark)) |
c12b395a4 gre: Support GRE ... |
2069 |
goto nla_put_failure; |
1faf3d9f7 ip6_gre: Add supp... |
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 |
if (nla_put_u16(skb, IFLA_GRE_ENCAP_TYPE, t->encap.type) || nla_put_be16(skb, IFLA_GRE_ENCAP_SPORT, t->encap.sport) || nla_put_be16(skb, IFLA_GRE_ENCAP_DPORT, t->encap.dport) || nla_put_u16(skb, IFLA_GRE_ENCAP_FLAGS, t->encap.flags)) goto nla_put_failure; |
6712abc16 ip6_gre: add ip6 ... |
2080 2081 2082 2083 |
if (p->collect_md) { if (nla_put_flag(skb, IFLA_GRE_COLLECT_METADATA)) goto nla_put_failure; } |
c12b395a4 gre: Support GRE ... |
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 |
return 0; nla_put_failure: return -EMSGSIZE; } static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = { [IFLA_GRE_LINK] = { .type = NLA_U32 }, [IFLA_GRE_IFLAGS] = { .type = NLA_U16 }, [IFLA_GRE_OFLAGS] = { .type = NLA_U16 }, [IFLA_GRE_IKEY] = { .type = NLA_U32 }, [IFLA_GRE_OKEY] = { .type = NLA_U32 }, |
c593642c8 treewide: Use siz... |
2096 2097 |
[IFLA_GRE_LOCAL] = { .len = sizeof_field(struct ipv6hdr, saddr) }, [IFLA_GRE_REMOTE] = { .len = sizeof_field(struct ipv6hdr, daddr) }, |
c12b395a4 gre: Support GRE ... |
2098 2099 2100 2101 |
[IFLA_GRE_TTL] = { .type = NLA_U8 }, [IFLA_GRE_ENCAP_LIMIT] = { .type = NLA_U8 }, [IFLA_GRE_FLOWINFO] = { .type = NLA_U32 }, [IFLA_GRE_FLAGS] = { .type = NLA_U32 }, |
1faf3d9f7 ip6_gre: Add supp... |
2102 2103 2104 2105 |
[IFLA_GRE_ENCAP_TYPE] = { .type = NLA_U16 }, [IFLA_GRE_ENCAP_FLAGS] = { .type = NLA_U16 }, [IFLA_GRE_ENCAP_SPORT] = { .type = NLA_U16 }, [IFLA_GRE_ENCAP_DPORT] = { .type = NLA_U16 }, |
6712abc16 ip6_gre: add ip6 ... |
2106 |
[IFLA_GRE_COLLECT_METADATA] = { .type = NLA_FLAG }, |
0a473b82c ip6_tunnel: Allow... |
2107 |
[IFLA_GRE_FWMARK] = { .type = NLA_U32 }, |
5a963eb61 ip6_gre: Add ERSP... |
2108 |
[IFLA_GRE_ERSPAN_INDEX] = { .type = NLA_U32 }, |
94d7d8f29 ip6_gre: add ersp... |
2109 2110 2111 |
[IFLA_GRE_ERSPAN_VER] = { .type = NLA_U8 }, [IFLA_GRE_ERSPAN_DIR] = { .type = NLA_U8 }, [IFLA_GRE_ERSPAN_HWID] = { .type = NLA_U16 }, |
c12b395a4 gre: Support GRE ... |
2112 |
}; |
5a963eb61 ip6_gre: Add ERSP... |
2113 2114 2115 |
static void ip6erspan_tap_setup(struct net_device *dev) { ether_setup(dev); |
4123f637a ip6erspan: remove... |
2116 |
dev->max_mtu = 0; |
5a963eb61 ip6_gre: Add ERSP... |
2117 2118 2119 |
dev->netdev_ops = &ip6erspan_netdev_ops; dev->needs_free_netdev = true; dev->priv_destructor = ip6gre_dev_free; |
5a963eb61 ip6_gre: Add ERSP... |
2120 2121 2122 2123 |
dev->priv_flags &= ~IFF_TX_SKB_SHARING; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; netif_keep_dst(dev); } |
2d665034f net: ip6_gre: Fix... |
2124 2125 2126 2127 |
static int ip6erspan_newlink(struct net *src_net, struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { |
2d665034f net: ip6_gre: Fix... |
2128 2129 |
struct ip6_tnl *nt = netdev_priv(dev); struct net *net = dev_net(dev); |
b80d0b93b net: ip6_gre: fix... |
2130 2131 2132 2133 |
struct ip6gre_net *ign; int err; ip6gre_netlink_parms(data, &nt->parms); |
4974d5f67 net: ip6_gre: ini... |
2134 |
ip6erspan_set_version(data, &nt->parms); |
b80d0b93b net: ip6_gre: fix... |
2135 2136 2137 2138 2139 2140 2141 2142 2143 |
ign = net_generic(net, ip6gre_net_id); if (nt->parms.collect_md) { if (rtnl_dereference(ign->collect_md_tun_erspan)) return -EEXIST; } else { if (ip6gre_tunnel_find(net, &nt->parms, dev->type)) return -EEXIST; } |
2d665034f net: ip6_gre: Fix... |
2144 |
|
b80d0b93b net: ip6_gre: fix... |
2145 |
err = ip6gre_newlink_common(src_net, dev, tb, data, extack); |
2d665034f net: ip6_gre: Fix... |
2146 2147 |
if (!err) { ip6erspan_tnl_link_config(nt, !tb[IFLA_MTU]); |
b80d0b93b net: ip6_gre: fix... |
2148 |
ip6erspan_tunnel_link_md(ign, nt); |
2d665034f net: ip6_gre: Fix... |
2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 |
ip6gre_tunnel_link(net_generic(net, ip6gre_net_id), nt); } return err; } static void ip6erspan_tnl_link_config(struct ip6_tnl *t, int set_mtu) { ip6gre_tnl_link_config_common(t); ip6gre_tnl_link_config_route(t, set_mtu, ip6erspan_calc_hlen(t)); } static int ip6erspan_tnl_change(struct ip6_tnl *t, const struct __ip6_tnl_parm *p, int set_mtu) { ip6gre_tnl_copy_tnl_parm(t, p); ip6erspan_tnl_link_config(t, set_mtu); return 0; } static int ip6erspan_changelink(struct net_device *dev, struct nlattr *tb[], struct nlattr *data[], struct netlink_ext_ack *extack) { struct ip6gre_net *ign = net_generic(dev_net(dev), ip6gre_net_id); struct __ip6_tnl_parm p; struct ip6_tnl *t; t = ip6gre_changelink_common(dev, tb, data, &p, extack); if (IS_ERR(t)) return PTR_ERR(t); |
4974d5f67 net: ip6_gre: ini... |
2179 |
ip6erspan_set_version(data, &p); |
b80d0b93b net: ip6_gre: fix... |
2180 |
ip6gre_tunnel_unlink_md(ign, t); |
2d665034f net: ip6_gre: Fix... |
2181 2182 |
ip6gre_tunnel_unlink(ign, t); ip6erspan_tnl_change(t, &p, !tb[IFLA_MTU]); |
b80d0b93b net: ip6_gre: fix... |
2183 |
ip6erspan_tunnel_link_md(ign, t); |
2d665034f net: ip6_gre: Fix... |
2184 2185 2186 |
ip6gre_tunnel_link(ign, t); return 0; } |
c12b395a4 gre: Support GRE ... |
2187 2188 2189 2190 2191 2192 2193 2194 2195 |
static struct rtnl_link_ops ip6gre_link_ops __read_mostly = { .kind = "ip6gre", .maxtype = IFLA_GRE_MAX, .policy = ip6gre_policy, .priv_size = sizeof(struct ip6_tnl), .setup = ip6gre_tunnel_setup, .validate = ip6gre_tunnel_validate, .newlink = ip6gre_newlink, .changelink = ip6gre_changelink, |
54d63f787 ip6_gre: don't al... |
2196 |
.dellink = ip6gre_dellink, |
c12b395a4 gre: Support GRE ... |
2197 2198 |
.get_size = ip6gre_get_size, .fill_info = ip6gre_fill_info, |
1728d4fab tunnels: advertis... |
2199 |
.get_link_net = ip6_tnl_get_link_net, |
c12b395a4 gre: Support GRE ... |
2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 |
}; static struct rtnl_link_ops ip6gre_tap_ops __read_mostly = { .kind = "ip6gretap", .maxtype = IFLA_GRE_MAX, .policy = ip6gre_policy, .priv_size = sizeof(struct ip6_tnl), .setup = ip6gre_tap_setup, .validate = ip6gre_tap_validate, .newlink = ip6gre_newlink, .changelink = ip6gre_changelink, .get_size = ip6gre_get_size, .fill_info = ip6gre_fill_info, |
3390e3976 ip6gretap: advert... |
2213 |
.get_link_net = ip6_tnl_get_link_net, |
c12b395a4 gre: Support GRE ... |
2214 |
}; |
5a963eb61 ip6_gre: Add ERSP... |
2215 2216 2217 2218 2219 2220 2221 |
static struct rtnl_link_ops ip6erspan_tap_ops __read_mostly = { .kind = "ip6erspan", .maxtype = IFLA_GRE_MAX, .policy = ip6gre_policy, .priv_size = sizeof(struct ip6_tnl), .setup = ip6erspan_tap_setup, .validate = ip6erspan_tap_validate, |
2d665034f net: ip6_gre: Fix... |
2222 2223 |
.newlink = ip6erspan_newlink, .changelink = ip6erspan_changelink, |
5a963eb61 ip6_gre: Add ERSP... |
2224 2225 2226 2227 |
.get_size = ip6gre_get_size, .fill_info = ip6gre_fill_info, .get_link_net = ip6_tnl_get_link_net, }; |
c12b395a4 gre: Support GRE ... |
2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 |
/* * And now the modules code and kernel interface. */ static int __init ip6gre_init(void) { int err; pr_info("GRE over IPv6 tunneling driver "); err = register_pernet_device(&ip6gre_net_ops); if (err < 0) return err; err = inet6_add_protocol(&ip6gre_protocol, IPPROTO_GRE); if (err < 0) { pr_info("%s: can't add protocol ", __func__); goto add_proto_failed; } err = rtnl_link_register(&ip6gre_link_ops); if (err < 0) goto rtnl_link_failed; err = rtnl_link_register(&ip6gre_tap_ops); if (err < 0) goto tap_ops_failed; |
5a963eb61 ip6_gre: Add ERSP... |
2257 2258 2259 |
err = rtnl_link_register(&ip6erspan_tap_ops); if (err < 0) goto erspan_link_failed; |
c12b395a4 gre: Support GRE ... |
2260 2261 |
out: return err; |
5a963eb61 ip6_gre: Add ERSP... |
2262 2263 |
erspan_link_failed: rtnl_link_unregister(&ip6gre_tap_ops); |
c12b395a4 gre: Support GRE ... |
2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 |
tap_ops_failed: rtnl_link_unregister(&ip6gre_link_ops); rtnl_link_failed: inet6_del_protocol(&ip6gre_protocol, IPPROTO_GRE); add_proto_failed: unregister_pernet_device(&ip6gre_net_ops); goto out; } static void __exit ip6gre_fini(void) { rtnl_link_unregister(&ip6gre_tap_ops); rtnl_link_unregister(&ip6gre_link_ops); |
5a963eb61 ip6_gre: Add ERSP... |
2277 |
rtnl_link_unregister(&ip6erspan_tap_ops); |
c12b395a4 gre: Support GRE ... |
2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 |
inet6_del_protocol(&ip6gre_protocol, IPPROTO_GRE); unregister_pernet_device(&ip6gre_net_ops); } module_init(ip6gre_init); module_exit(ip6gre_fini); MODULE_LICENSE("GPL"); MODULE_AUTHOR("D. Kozlov (xeb@mail.ru)"); MODULE_DESCRIPTION("GRE over IPv6 tunneling device"); MODULE_ALIAS_RTNL_LINK("ip6gre"); |
5a4ee9a9a ip6gre: add a rtn... |
2288 |
MODULE_ALIAS_RTNL_LINK("ip6gretap"); |
94d7d8f29 ip6_gre: add ersp... |
2289 |
MODULE_ALIAS_RTNL_LINK("ip6erspan"); |
c12b395a4 gre: Support GRE ... |
2290 |
MODULE_ALIAS_NETDEV("ip6gre0"); |