2005-04-16 16:20:36 -06:00
|
|
|
#ifndef _NET_IP6_TUNNEL_H
|
|
|
|
#define _NET_IP6_TUNNEL_H
|
|
|
|
|
|
|
|
#include <linux/ipv6.h>
|
|
|
|
#include <linux/netdevice.h>
|
2013-03-25 08:49:35 -06:00
|
|
|
#include <linux/if_tunnel.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
#include <linux/ip6_tunnel.h>
|
2015-12-24 15:34:54 -07:00
|
|
|
#include <net/ip_tunnels.h>
|
2016-02-12 07:43:54 -07:00
|
|
|
#include <net/dst_cache.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2012-08-09 18:51:50 -06:00
|
|
|
#define IP6TUNNEL_ERR_TIMEO (30*HZ)
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* capable of sending packets */
|
|
|
|
#define IP6_TNL_F_CAP_XMIT 0x10000
|
|
|
|
/* capable of receiving packets */
|
|
|
|
#define IP6_TNL_F_CAP_RCV 0x20000
|
2012-06-28 12:15:52 -06:00
|
|
|
/* determine capability on a per-packet basis */
|
|
|
|
#define IP6_TNL_F_CAP_PER_PACKET 0x40000
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2012-08-09 18:51:50 -06:00
|
|
|
struct __ip6_tnl_parm {
|
|
|
|
char name[IFNAMSIZ]; /* name of tunnel device */
|
|
|
|
int link; /* ifindex of underlying L2 interface */
|
|
|
|
__u8 proto; /* tunnel protocol */
|
|
|
|
__u8 encap_limit; /* encapsulation limit for tunnel */
|
|
|
|
__u8 hop_limit; /* hop limit for tunnel */
|
2016-09-15 14:00:30 -06:00
|
|
|
bool collect_md;
|
2012-08-09 18:51:50 -06:00
|
|
|
__be32 flowinfo; /* traffic class and flowlabel for tunnel */
|
|
|
|
__u32 flags; /* tunnel flags */
|
|
|
|
struct in6_addr laddr; /* local tunnel end-point address */
|
|
|
|
struct in6_addr raddr; /* remote tunnel end-point address */
|
|
|
|
|
|
|
|
__be16 i_flags;
|
|
|
|
__be16 o_flags;
|
|
|
|
__be32 i_key;
|
|
|
|
__be32 o_key;
|
|
|
|
};
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2012-08-09 18:51:50 -06:00
|
|
|
/* IPv6 tunnel */
|
2005-04-16 16:20:36 -06:00
|
|
|
struct ip6_tnl {
|
2010-10-24 15:33:16 -06:00
|
|
|
struct ip6_tnl __rcu *next; /* next tunnel in list */
|
2005-04-16 16:20:36 -06:00
|
|
|
struct net_device *dev; /* virtual device associated with tunnel */
|
2013-08-13 09:51:12 -06:00
|
|
|
struct net *net; /* netns for packet i/o */
|
2012-08-09 18:51:50 -06:00
|
|
|
struct __ip6_tnl_parm parms; /* tunnel configuration parameters */
|
2005-04-16 16:20:36 -06:00
|
|
|
struct flowi fl; /* flowi template for xmit */
|
2016-02-12 07:43:54 -07:00
|
|
|
struct dst_cache dst_cache; /* cached dst */
|
2016-04-29 18:12:15 -06:00
|
|
|
struct gro_cells gro_cells;
|
2012-08-09 18:51:50 -06:00
|
|
|
|
|
|
|
int err_count;
|
|
|
|
unsigned long err_time;
|
|
|
|
|
|
|
|
/* These fields used only by GRE */
|
|
|
|
__u32 i_seqno; /* The last seen seqno */
|
|
|
|
__u32 o_seqno; /* The last output seqno */
|
2016-04-29 18:12:20 -06:00
|
|
|
int hlen; /* tun_hlen + encap_hlen */
|
|
|
|
int tun_hlen; /* Precalculated header length */
|
2016-05-18 10:06:17 -06:00
|
|
|
int encap_hlen; /* Encap header length (FOU,GUE) */
|
|
|
|
struct ip_tunnel_encap encap;
|
2012-08-09 18:51:50 -06:00
|
|
|
int mlink;
|
2016-05-18 10:06:17 -06:00
|
|
|
};
|
2016-04-29 18:12:20 -06:00
|
|
|
|
2016-05-18 10:06:17 -06:00
|
|
|
struct ip6_tnl_encap_ops {
|
|
|
|
size_t (*encap_hlen)(struct ip_tunnel_encap *e);
|
|
|
|
int (*build_header)(struct sk_buff *skb, struct ip_tunnel_encap *e,
|
|
|
|
u8 *protocol, struct flowi6 *fl6);
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
2016-05-25 08:50:45 -06:00
|
|
|
#ifdef CONFIG_INET
|
|
|
|
|
2016-05-18 10:06:17 -06:00
|
|
|
extern const struct ip6_tnl_encap_ops __rcu *
|
|
|
|
ip6tun_encaps[MAX_IPTUN_ENCAP_OPS];
|
|
|
|
|
|
|
|
int ip6_tnl_encap_add_ops(const struct ip6_tnl_encap_ops *ops,
|
|
|
|
unsigned int num);
|
|
|
|
int ip6_tnl_encap_del_ops(const struct ip6_tnl_encap_ops *ops,
|
|
|
|
unsigned int num);
|
|
|
|
int ip6_tnl_encap_setup(struct ip6_tnl *t,
|
|
|
|
struct ip_tunnel_encap *ipencap);
|
|
|
|
|
|
|
|
static inline int ip6_encap_hlen(struct ip_tunnel_encap *e)
|
|
|
|
{
|
|
|
|
const struct ip6_tnl_encap_ops *ops;
|
|
|
|
int hlen = -EINVAL;
|
|
|
|
|
|
|
|
if (e->type == TUNNEL_ENCAP_NONE)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (e->type >= MAX_IPTUN_ENCAP_OPS)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
ops = rcu_dereference(ip6tun_encaps[e->type]);
|
|
|
|
if (likely(ops && ops->encap_hlen))
|
|
|
|
hlen = ops->encap_hlen(e);
|
|
|
|
rcu_read_unlock();
|
|
|
|
|
|
|
|
return hlen;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int ip6_tnl_encap(struct sk_buff *skb, struct ip6_tnl *t,
|
|
|
|
u8 *protocol, struct flowi6 *fl6)
|
|
|
|
{
|
|
|
|
const struct ip6_tnl_encap_ops *ops;
|
|
|
|
int ret = -EINVAL;
|
|
|
|
|
|
|
|
if (t->encap.type == TUNNEL_ENCAP_NONE)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (t->encap.type >= MAX_IPTUN_ENCAP_OPS)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
ops = rcu_dereference(ip6tun_encaps[t->encap.type]);
|
|
|
|
if (likely(ops && ops->build_header))
|
|
|
|
ret = ops->build_header(skb, &t->encap, protocol, fl6);
|
|
|
|
rcu_read_unlock();
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/* Tunnel encapsulation limit destination sub-option */
|
|
|
|
|
|
|
|
struct ipv6_tlv_tnl_enc_lim {
|
|
|
|
__u8 type; /* type-code for option */
|
|
|
|
__u8 length; /* option length */
|
|
|
|
__u8 encap_limit; /* tunnel encapsulation limit */
|
2010-06-03 04:21:52 -06:00
|
|
|
} __packed;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2012-08-09 18:51:50 -06:00
|
|
|
int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
|
|
const struct in6_addr *raddr);
|
2016-04-29 18:12:15 -06:00
|
|
|
int ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,
|
|
|
|
const struct tnl_ptk_info *tpi, struct metadata_dst *tun_dst,
|
|
|
|
bool log_ecn_error);
|
2014-11-05 00:02:48 -07:00
|
|
|
int ip6_tnl_xmit_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
|
|
const struct in6_addr *raddr);
|
2016-04-29 18:12:18 -06:00
|
|
|
int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
|
|
|
|
struct flowi6 *fl6, int encap_limit, __u32 *pmtu, __u8 proto);
|
2012-08-09 18:51:50 -06:00
|
|
|
__u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw);
|
|
|
|
__u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr,
|
|
|
|
const struct in6_addr *raddr);
|
2015-01-15 07:11:17 -07:00
|
|
|
struct net *ip6_tnl_get_link_net(const struct net_device *dev);
|
2015-04-02 09:07:01 -06:00
|
|
|
int ip6_tnl_get_iflink(const struct net_device *dev);
|
2016-04-29 18:12:20 -06:00
|
|
|
int ip6_tnl_change_mtu(struct net_device *dev, int new_mtu);
|
2012-08-09 18:51:50 -06:00
|
|
|
|
2015-04-05 20:19:09 -06:00
|
|
|
static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
|
|
|
|
struct net_device *dev)
|
2013-03-09 16:00:39 -07:00
|
|
|
{
|
|
|
|
int pkt_len, err;
|
|
|
|
|
2016-11-01 09:45:12 -06:00
|
|
|
memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
|
ip6tunnel: make rx/tx bytes counters consistent
Like the previous patch, which fixes ipv4 tunnels, here is the ipv6 part.
Before the patch, the external ipv6 header + gre header were included on
tx.
After the patch:
$ ping -c1 192.168.6.121 ; ip -s l ls dev ip6gre1
PING 192.168.6.121 (192.168.6.121) 56(84) bytes of data.
64 bytes from 192.168.6.121: icmp_req=1 ttl=64 time=1.92 ms
--- 192.168.6.121 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.923/1.923/1.923/0.000 ms
7: ip6gre1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1440 qdisc noqueue state UNKNOWN mode DEFAULT group default
link/gre6 20:01:06:60:30:08:c1:c3:00:00:00:00:00:00:01:23 peer 20:01:06:60:30:08:c1:c3:00:00:00:00:00:00:01:21
RX: bytes packets errors dropped overrun mcast
84 1 0 0 0 0
TX: bytes packets errors dropped carrier collsns
84 1 0 0 0 0
$ ping -c1 192.168.1.121 ; ip -s l ls dev ip6tnl1
PING 192.168.1.121 (192.168.1.121) 56(84) bytes of data.
64 bytes from 192.168.1.121: icmp_req=1 ttl=64 time=2.28 ms
--- 192.168.1.121 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.288/2.288/2.288/0.000 ms
8: ip6tnl1@NONE: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1452 qdisc noqueue state UNKNOWN mode DEFAULT group default
link/tunnel6 2001:660:3008:c1c3::123 peer 2001:660:3008:c1c3::121
RX: bytes packets errors dropped overrun mcast
84 1 0 0 0 0
TX: bytes packets errors dropped carrier collsns
84 1 0 0 0 0
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-18 03:47:41 -06:00
|
|
|
pkt_len = skb->len - skb_inner_network_offset(skb);
|
2015-10-07 15:48:46 -06:00
|
|
|
err = ip6_local_out(dev_net(skb_dst(skb)->dev), sk, skb);
|
2015-12-24 15:34:54 -07:00
|
|
|
if (unlikely(net_xmit_eval(err)))
|
|
|
|
pkt_len = -1;
|
|
|
|
iptunnel_xmit_stats(dev, pkt_len);
|
2013-03-09 16:00:39 -07:00
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
2016-01-01 05:18:48 -07:00
|
|
|
#endif
|