Contributors: 29
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Tom Herbert |
369 |
44.14% |
4 |
7.14% |
| Ville Nuorvala |
171 |
20.45% |
3 |
5.36% |
| Dmitry Kozlov |
78 |
9.33% |
2 |
3.57% |
| Américo Wang |
43 |
5.14% |
2 |
3.57% |
| Linus Torvalds (pre-git) |
39 |
4.67% |
10 |
17.86% |
| Nicolas Dichtel |
24 |
2.87% |
4 |
7.14% |
| William Tu |
16 |
1.91% |
2 |
3.57% |
| Eli Cooper |
15 |
1.79% |
1 |
1.79% |
| Pravin B Shelar |
11 |
1.32% |
2 |
3.57% |
| Alexander Lobakin |
8 |
0.96% |
1 |
1.79% |
| David S. Miller |
7 |
0.84% |
1 |
1.79% |
| Stefano Brivio |
6 |
0.72% |
1 |
1.79% |
| Xin Long |
6 |
0.72% |
1 |
1.79% |
| Eric Dumazet |
5 |
0.60% |
3 |
5.36% |
| Eric W. Biedermann |
5 |
0.60% |
3 |
5.36% |
| Arnd Bergmann |
5 |
0.60% |
1 |
1.79% |
| Al Viro |
4 |
0.48% |
3 |
5.36% |
| Paolo Abeni |
4 |
0.48% |
1 |
1.79% |
| Jason A. Donenfeld |
3 |
0.36% |
1 |
1.79% |
| Alexei Starovoitov |
3 |
0.36% |
1 |
1.79% |
| Craig Gallek |
3 |
0.36% |
1 |
1.79% |
| Hideaki Yoshifuji / 吉藤英明 |
2 |
0.24% |
1 |
1.79% |
| Brian Haley |
2 |
0.24% |
1 |
1.79% |
| Linus Torvalds |
2 |
0.24% |
1 |
1.79% |
| Greg Kroah-Hartman |
1 |
0.12% |
1 |
1.79% |
| Steffen Klassert |
1 |
0.12% |
1 |
1.79% |
| Joe Perches |
1 |
0.12% |
1 |
1.79% |
| Thomas Graf |
1 |
0.12% |
1 |
1.79% |
| Peilin Ye |
1 |
0.12% |
1 |
1.79% |
| Total |
836 |
|
56 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_IP6_TUNNEL_H
#define _NET_IP6_TUNNEL_H
#include <linux/ipv6.h>
#include <linux/netdevice.h>
#include <linux/if_tunnel.h>
#include <linux/ip6_tunnel.h>
#include <net/ip_tunnels.h>
#include <net/dst_cache.h>
#define IP6TUNNEL_ERR_TIMEO (30*HZ)
/* capable of sending packets */
#define IP6_TNL_F_CAP_XMIT 0x10000
/* capable of receiving packets */
#define IP6_TNL_F_CAP_RCV 0x20000
/* determine capability on a per-packet basis */
#define IP6_TNL_F_CAP_PER_PACKET 0x40000
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 */
bool collect_md;
__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 */
IP_TUNNEL_DECLARE_FLAGS(i_flags);
IP_TUNNEL_DECLARE_FLAGS(o_flags);
__be32 i_key;
__be32 o_key;
__u32 fwmark;
__u32 index; /* ERSPAN type II index */
__u8 erspan_ver; /* ERSPAN version */
__u8 dir; /* direction */
__u16 hwid; /* hwid */
};
/* IPv6 tunnel */
struct ip6_tnl {
struct ip6_tnl __rcu *next; /* next tunnel in list */
struct net_device *dev; /* virtual device associated with tunnel */
netdevice_tracker dev_tracker;
struct net *net; /* netns for packet i/o */
struct __ip6_tnl_parm parms; /* tunnel configuration parameters */
struct flowi fl; /* flowi template for xmit */
struct dst_cache dst_cache; /* cached dst */
struct gro_cells gro_cells;
int err_count;
unsigned long err_time;
/* These fields used only by GRE */
__u32 i_seqno; /* The last seen seqno */
atomic_t o_seqno; /* The last output seqno */
int hlen; /* tun_hlen + encap_hlen */
int tun_hlen; /* Precalculated header length */
int encap_hlen; /* Encap header length (FOU,GUE) */
struct ip_tunnel_encap encap;
int mlink;
};
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);
int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
u8 type, u8 code, int offset, __be32 info);
};
#ifdef CONFIG_INET
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;
}
/* 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 */
} __packed;
int ip6_tnl_rcv_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
const struct in6_addr *raddr);
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);
int ip6_tnl_xmit_ctl(struct ip6_tnl *t, const struct in6_addr *laddr,
const struct in6_addr *raddr);
int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
struct flowi6 *fl6, int encap_limit, __u32 *pmtu, __u8 proto);
__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);
struct net *ip6_tnl_get_link_net(const struct net_device *dev);
int ip6_tnl_get_iflink(const struct net_device *dev);
int ip6_tnl_change_mtu(struct net_device *dev, int new_mtu);
static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
struct net_device *dev)
{
int pkt_len, err;
memset(skb->cb, 0, sizeof(struct inet6_skb_parm));
pkt_len = skb->len - skb_inner_network_offset(skb);
err = ip6_local_out(dev_net(skb_dst(skb)->dev), sk, skb);
if (dev) {
if (unlikely(net_xmit_eval(err)))
pkt_len = -1;
iptunnel_xmit_stats(dev, pkt_len);
}
}
#endif
#endif