Contributors: 38
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Herbert Xu |
342 |
23.36% |
12 |
14.29% |
| Michal Kubeček |
272 |
18.58% |
1 |
1.19% |
| Hideaki Yoshifuji / 吉藤英明 |
217 |
14.82% |
7 |
8.33% |
| Dan Streetman |
77 |
5.26% |
1 |
1.19% |
| David S. Miller |
75 |
5.12% |
9 |
10.71% |
| Neil Horman |
58 |
3.96% |
1 |
1.19% |
| Patrick McHardy |
48 |
3.28% |
2 |
2.38% |
| Daniel Lezcano |
44 |
3.01% |
2 |
2.38% |
| Eric Dumazet |
42 |
2.87% |
3 |
3.57% |
| Linus Torvalds (pre-git) |
34 |
2.32% |
6 |
7.14% |
| David Ahern |
24 |
1.64% |
6 |
7.14% |
| Xin Long |
21 |
1.43% |
1 |
1.19% |
| Tom Lendacky |
20 |
1.37% |
1 |
1.19% |
| Ville Nuorvala |
20 |
1.37% |
1 |
1.19% |
| Chen Zhongjin |
19 |
1.30% |
1 |
1.19% |
| Alexey Dobriyan |
17 |
1.16% |
3 |
3.57% |
| Brian Haley |
15 |
1.02% |
1 |
1.19% |
| Alexey Kuznetsov |
15 |
1.02% |
2 |
2.38% |
| Eyal Birger |
14 |
0.96% |
1 |
1.19% |
| Steffen Klassert |
13 |
0.89% |
1 |
1.19% |
| Lorenzo Colitti |
12 |
0.82% |
1 |
1.19% |
| Kazunori Miyazawa |
9 |
0.61% |
1 |
1.19% |
| Zhang Changzhong |
9 |
0.61% |
1 |
1.19% |
| Joel Granados |
7 |
0.48% |
2 |
2.38% |
| Américo Wang |
6 |
0.41% |
1 |
1.19% |
| Hangbin Liu |
5 |
0.34% |
1 |
1.19% |
| Shinta Sugimoto |
4 |
0.27% |
1 |
1.19% |
| Masahide Nakamura |
4 |
0.27% |
1 |
1.19% |
| Florian Westphal |
4 |
0.27% |
3 |
3.57% |
| Martin KaFai Lau |
3 |
0.20% |
1 |
1.19% |
| Arnd Bergmann |
2 |
0.14% |
1 |
1.19% |
| Jakub Kiciński |
2 |
0.14% |
1 |
1.19% |
| Denis V. Lunev |
2 |
0.14% |
1 |
1.19% |
| Ian Morris |
2 |
0.14% |
2 |
2.38% |
| Jiri Benc |
2 |
0.14% |
1 |
1.19% |
| Adrian Bunk |
2 |
0.14% |
1 |
1.19% |
| Thomas Weißschuh |
1 |
0.07% |
1 |
1.19% |
| Greg Kroah-Hartman |
1 |
0.07% |
1 |
1.19% |
| Total |
1464 |
|
84 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* xfrm6_policy.c: based on xfrm4_policy.c
*
* Authors:
* Mitsuru KANDA @USAGI
* Kazunori MIYAZAWA @USAGI
* Kunihiro Ishiguro <kunihiro@ipinfusion.com>
* IPv6 support
* YOSHIFUJI Hideaki
* Split up af-specific portion
*
*/
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <net/addrconf.h>
#include <net/dst.h>
#include <net/xfrm.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/l3mdev.h>
static struct dst_entry *xfrm6_dst_lookup(struct net *net, int tos, int oif,
const xfrm_address_t *saddr,
const xfrm_address_t *daddr,
u32 mark)
{
struct flowi6 fl6;
struct dst_entry *dst;
int err;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_l3mdev = l3mdev_master_ifindex_by_index(net, oif);
fl6.flowi6_mark = mark;
memcpy(&fl6.daddr, daddr, sizeof(fl6.daddr));
if (saddr)
memcpy(&fl6.saddr, saddr, sizeof(fl6.saddr));
dst = ip6_route_output(net, NULL, &fl6);
err = dst->error;
if (dst->error) {
dst_release(dst);
dst = ERR_PTR(err);
}
return dst;
}
static int xfrm6_get_saddr(struct net *net, int oif,
xfrm_address_t *saddr, xfrm_address_t *daddr,
u32 mark)
{
struct dst_entry *dst;
struct net_device *dev;
struct inet6_dev *idev;
dst = xfrm6_dst_lookup(net, 0, oif, NULL, daddr, mark);
if (IS_ERR(dst))
return -EHOSTUNREACH;
idev = ip6_dst_idev(dst);
if (!idev) {
dst_release(dst);
return -EHOSTUNREACH;
}
dev = idev->dev;
ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
dst_release(dst);
return 0;
}
static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev,
const struct flowi *fl)
{
struct rt6_info *rt = dst_rt6_info(xdst->route);
xdst->u.dst.dev = dev;
netdev_hold(dev, &xdst->u.dst.dev_tracker, GFP_ATOMIC);
xdst->u.rt6.rt6i_idev = in6_dev_get(dev);
if (!xdst->u.rt6.rt6i_idev) {
netdev_put(dev, &xdst->u.dst.dev_tracker);
return -ENODEV;
}
/* Sheit... I remember I did this right. Apparently,
* it was magically lost, so this code needs audit */
xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST |
RTF_LOCAL);
xdst->route_cookie = rt6_get_cookie(rt);
xdst->u.rt6.rt6i_gateway = rt->rt6i_gateway;
xdst->u.rt6.rt6i_dst = rt->rt6i_dst;
xdst->u.rt6.rt6i_src = rt->rt6i_src;
rt6_uncached_list_add(&xdst->u.rt6);
return 0;
}
static void xfrm6_update_pmtu(struct dst_entry *dst, struct sock *sk,
struct sk_buff *skb, u32 mtu,
bool confirm_neigh)
{
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
struct dst_entry *path = xdst->route;
path->ops->update_pmtu(path, sk, skb, mtu, confirm_neigh);
}
static void xfrm6_redirect(struct dst_entry *dst, struct sock *sk,
struct sk_buff *skb)
{
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
struct dst_entry *path = xdst->route;
path->ops->redirect(path, sk, skb);
}
static void xfrm6_dst_destroy(struct dst_entry *dst)
{
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
dst_destroy_metrics_generic(dst);
rt6_uncached_list_del(&xdst->u.rt6);
if (likely(xdst->u.rt6.rt6i_idev))
in6_dev_put(xdst->u.rt6.rt6i_idev);
xfrm_dst_destroy(xdst);
}
static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev)
{
struct xfrm_dst *xdst;
xdst = (struct xfrm_dst *)dst;
if (xdst->u.rt6.rt6i_idev->dev == dev) {
struct inet6_dev *loopback_idev =
in6_dev_get(dev_net(dev)->loopback_dev);
do {
in6_dev_put(xdst->u.rt6.rt6i_idev);
xdst->u.rt6.rt6i_idev = loopback_idev;
in6_dev_hold(loopback_idev);
xdst = (struct xfrm_dst *)xfrm_dst_child(&xdst->u.dst);
} while (xdst->u.dst.xfrm);
__in6_dev_put(loopback_idev);
}
xfrm_dst_ifdown(dst, dev);
}
static struct dst_ops xfrm6_dst_ops_template = {
.family = AF_INET6,
.update_pmtu = xfrm6_update_pmtu,
.redirect = xfrm6_redirect,
.cow_metrics = dst_cow_metrics_generic,
.destroy = xfrm6_dst_destroy,
.ifdown = xfrm6_dst_ifdown,
.local_out = __ip6_local_out,
.gc_thresh = 32768,
};
static const struct xfrm_policy_afinfo xfrm6_policy_afinfo = {
.dst_ops = &xfrm6_dst_ops_template,
.dst_lookup = xfrm6_dst_lookup,
.get_saddr = xfrm6_get_saddr,
.fill_dst = xfrm6_fill_dst,
.blackhole_route = ip6_blackhole_route,
};
static int __init xfrm6_policy_init(void)
{
return xfrm_policy_register_afinfo(&xfrm6_policy_afinfo, AF_INET6);
}
static void xfrm6_policy_fini(void)
{
xfrm_policy_unregister_afinfo(&xfrm6_policy_afinfo);
}
#ifdef CONFIG_SYSCTL
static struct ctl_table xfrm6_policy_table[] = {
{
.procname = "xfrm6_gc_thresh",
.data = &init_net.xfrm.xfrm6_dst_ops.gc_thresh,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
};
static int __net_init xfrm6_net_sysctl_init(struct net *net)
{
struct ctl_table *table;
struct ctl_table_header *hdr;
table = xfrm6_policy_table;
if (!net_eq(net, &init_net)) {
table = kmemdup(table, sizeof(xfrm6_policy_table), GFP_KERNEL);
if (!table)
goto err_alloc;
table[0].data = &net->xfrm.xfrm6_dst_ops.gc_thresh;
}
hdr = register_net_sysctl_sz(net, "net/ipv6", table,
ARRAY_SIZE(xfrm6_policy_table));
if (!hdr)
goto err_reg;
net->ipv6.sysctl.xfrm6_hdr = hdr;
return 0;
err_reg:
if (!net_eq(net, &init_net))
kfree(table);
err_alloc:
return -ENOMEM;
}
static void __net_exit xfrm6_net_sysctl_exit(struct net *net)
{
const struct ctl_table *table;
if (!net->ipv6.sysctl.xfrm6_hdr)
return;
table = net->ipv6.sysctl.xfrm6_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->ipv6.sysctl.xfrm6_hdr);
if (!net_eq(net, &init_net))
kfree(table);
}
#else /* CONFIG_SYSCTL */
static inline int xfrm6_net_sysctl_init(struct net *net)
{
return 0;
}
static inline void xfrm6_net_sysctl_exit(struct net *net)
{
}
#endif
static int __net_init xfrm6_net_init(struct net *net)
{
int ret;
memcpy(&net->xfrm.xfrm6_dst_ops, &xfrm6_dst_ops_template,
sizeof(xfrm6_dst_ops_template));
ret = dst_entries_init(&net->xfrm.xfrm6_dst_ops);
if (ret)
return ret;
ret = xfrm6_net_sysctl_init(net);
if (ret)
dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
return ret;
}
static void __net_exit xfrm6_net_exit(struct net *net)
{
xfrm6_net_sysctl_exit(net);
dst_entries_destroy(&net->xfrm.xfrm6_dst_ops);
}
static struct pernet_operations xfrm6_net_ops = {
.init = xfrm6_net_init,
.exit = xfrm6_net_exit,
};
int __init xfrm6_init(void)
{
int ret;
ret = xfrm6_policy_init();
if (ret)
goto out;
ret = xfrm6_state_init();
if (ret)
goto out_policy;
ret = xfrm6_protocol_init();
if (ret)
goto out_state;
ret = register_pernet_subsys(&xfrm6_net_ops);
if (ret)
goto out_protocol;
ret = xfrm_nat_keepalive_init(AF_INET6);
if (ret)
goto out_nat_keepalive;
out:
return ret;
out_nat_keepalive:
unregister_pernet_subsys(&xfrm6_net_ops);
out_protocol:
xfrm6_protocol_fini();
out_state:
xfrm6_state_fini();
out_policy:
xfrm6_policy_fini();
goto out;
}
void xfrm6_fini(void)
{
xfrm_nat_keepalive_fini(AF_INET6);
unregister_pernet_subsys(&xfrm6_net_ops);
xfrm6_protocol_fini();
xfrm6_policy_fini();
xfrm6_state_fini();
}