Contributors: 35
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Pablo Neira Ayuso |
527 |
46.51% |
4 |
6.45% |
| Patrick McHardy |
121 |
10.68% |
7 |
11.29% |
| Florian Westphal |
107 |
9.44% |
6 |
9.68% |
| Harald Welte |
81 |
7.15% |
2 |
3.23% |
| Martin Willi |
45 |
3.97% |
2 |
3.23% |
| Eric Dumazet |
42 |
3.71% |
6 |
9.68% |
| David S. Miller |
28 |
2.47% |
2 |
3.23% |
| Eli Cooper |
19 |
1.68% |
1 |
1.61% |
| Linus Torvalds (pre-git) |
17 |
1.50% |
4 |
6.45% |
| Ido Schimmel |
17 |
1.50% |
1 |
1.61% |
| Martin KaFai Lau |
14 |
1.24% |
1 |
1.61% |
| Ulrich Weber |
12 |
1.06% |
1 |
1.61% |
| Sergey Popovich |
11 |
0.97% |
1 |
1.61% |
| Hideaki Yoshifuji / 吉藤英明 |
11 |
0.97% |
2 |
3.23% |
| Eric W. Biedermann |
10 |
0.88% |
1 |
1.61% |
| Lorenzo Colitti |
10 |
0.88% |
1 |
1.61% |
| Jason A. Donenfeld |
6 |
0.53% |
1 |
1.61% |
| Yasuyuki Kozakai |
6 |
0.53% |
1 |
1.61% |
| James Morris |
6 |
0.53% |
1 |
1.61% |
| Alexey Dobriyan |
5 |
0.44% |
2 |
3.23% |
| Abhishek Chauhan |
5 |
0.44% |
1 |
1.61% |
| Stephen Hemminger |
4 |
0.35% |
1 |
1.61% |
| Paul Gortmaker |
3 |
0.26% |
1 |
1.61% |
| Kai Germaschewski |
3 |
0.26% |
1 |
1.61% |
| Arnaldo Carvalho de Melo |
3 |
0.26% |
1 |
1.61% |
| Balazs Scheidler |
3 |
0.26% |
1 |
1.61% |
| Alexey Kuznetsov |
3 |
0.26% |
1 |
1.61% |
| Jeremy Sowden |
2 |
0.18% |
1 |
1.61% |
| Herbert Xu |
2 |
0.18% |
1 |
1.61% |
| Joe Perches |
2 |
0.18% |
1 |
1.61% |
| Bird, Timothy |
2 |
0.18% |
1 |
1.61% |
| Stanislav Fomichev |
2 |
0.18% |
1 |
1.61% |
| Daniel Lezcano |
2 |
0.18% |
1 |
1.61% |
| Américo Wang |
1 |
0.09% |
1 |
1.61% |
| Denis V. Lunev |
1 |
0.09% |
1 |
1.61% |
| Total |
1133 |
|
62 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* IPv6 specific functions of netfilter core
*
* Rusty Russell (C) 2000
* Patrick McHardy (C) 2006-2012
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/ipv6.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
#include <linux/export.h>
#include <net/addrconf.h>
#include <net/dst.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/xfrm.h>
#include <net/netfilter/nf_queue.h>
#include <net/netfilter/nf_conntrack_bridge.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
#include "../bridge/br_private.h"
int ip6_route_me_harder(struct net *net, struct sock *sk_partial, struct sk_buff *skb)
{
const struct ipv6hdr *iph = ipv6_hdr(skb);
struct sock *sk = sk_to_full_sk(sk_partial);
struct net_device *dev = skb_dst_dev(skb);
struct flow_keys flkeys;
unsigned int hh_len;
struct dst_entry *dst;
int strict = (ipv6_addr_type(&iph->daddr) &
(IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL));
struct flowi6 fl6 = {
.flowi6_l3mdev = l3mdev_master_ifindex(dev),
.flowi6_mark = skb->mark,
.flowi6_uid = sock_net_uid(net, sk),
.daddr = iph->daddr,
.saddr = iph->saddr,
.flowlabel = ip6_flowinfo(iph),
};
int err;
if (sk && sk->sk_bound_dev_if)
fl6.flowi6_oif = sk->sk_bound_dev_if;
else if (strict)
fl6.flowi6_oif = dev->ifindex;
fib6_rules_early_flow_dissect(net, skb, &fl6, &flkeys);
dst = ip6_route_output(net, sk, &fl6);
err = dst->error;
if (err) {
IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES);
net_dbg_ratelimited("ip6_route_me_harder: No more route\n");
dst_release(dst);
return err;
}
/* Drop old route. */
skb_dst_drop(skb);
skb_dst_set(skb, dst);
#ifdef CONFIG_XFRM
if (!(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) &&
xfrm_decode_session(net, skb, flowi6_to_flowi(&fl6), AF_INET6) == 0) {
/* ignore return value from skb_dstref_steal, xfrm_lookup takes
* care of dropping the refcnt if needed.
*/
skb_dstref_steal(skb);
dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), sk, 0);
if (IS_ERR(dst))
return PTR_ERR(dst);
skb_dst_set(skb, dst);
}
#endif
/* Change in oif may mean change in hh_len. */
hh_len = skb_dst_dev(skb)->hard_header_len;
if (skb_headroom(skb) < hh_len &&
pskb_expand_head(skb, HH_DATA_ALIGN(hh_len - skb_headroom(skb)),
0, GFP_ATOMIC))
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL(ip6_route_me_harder);
int __nf_ip6_route(struct net *net, struct dst_entry **dst,
struct flowi *fl, bool strict)
{
static const struct ipv6_pinfo fake_pinfo;
static const struct inet_sock fake_sk = {
/* makes ip6_route_output set RT6_LOOKUP_F_IFACE: */
.sk.sk_bound_dev_if = 1,
.pinet6 = (struct ipv6_pinfo *) &fake_pinfo,
};
const void *sk = strict ? &fake_sk : NULL;
struct dst_entry *result;
int err;
result = ip6_route_output(net, sk, &fl->u.ip6);
err = result->error;
if (err)
dst_release(result);
else
*dst = result;
return err;
}
EXPORT_SYMBOL_GPL(__nf_ip6_route);
int br_ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
struct nf_bridge_frag_data *data,
int (*output)(struct net *, struct sock *sk,
const struct nf_bridge_frag_data *data,
struct sk_buff *))
{
int frag_max_size = BR_INPUT_SKB_CB(skb)->frag_max_size;
u8 tstamp_type = skb->tstamp_type;
ktime_t tstamp = skb->tstamp;
struct ip6_frag_state state;
u8 *prevhdr, nexthdr = 0;
unsigned int mtu, hlen;
int hroom, err = 0;
__be32 frag_id;
err = ip6_find_1stfragopt(skb, &prevhdr);
if (err < 0)
goto blackhole;
hlen = err;
nexthdr = *prevhdr;
mtu = skb->dev->mtu;
if (frag_max_size > mtu ||
frag_max_size < IPV6_MIN_MTU)
goto blackhole;
mtu = frag_max_size;
if (mtu < hlen + sizeof(struct frag_hdr) + 8)
goto blackhole;
mtu -= hlen + sizeof(struct frag_hdr);
frag_id = ipv6_select_ident(net, &ipv6_hdr(skb)->daddr,
&ipv6_hdr(skb)->saddr);
if (skb->ip_summed == CHECKSUM_PARTIAL &&
(err = skb_checksum_help(skb)))
goto blackhole;
hroom = LL_RESERVED_SPACE(skb->dev);
if (skb_has_frag_list(skb)) {
unsigned int first_len = skb_pagelen(skb);
struct ip6_fraglist_iter iter;
struct sk_buff *frag2;
if (first_len - hlen > mtu)
goto blackhole;
if (skb_cloned(skb) ||
skb_headroom(skb) < (hroom + sizeof(struct frag_hdr)))
goto slow_path;
skb_walk_frags(skb, frag2) {
if (frag2->len > mtu)
goto blackhole;
/* Partially cloned skb? */
if (skb_shared(frag2) ||
skb_headroom(frag2) < (hlen + hroom + sizeof(struct frag_hdr)))
goto slow_path;
}
err = ip6_fraglist_init(skb, hlen, prevhdr, nexthdr, frag_id,
&iter);
if (err < 0)
goto blackhole;
for (;;) {
/* Prepare header of the next frame,
* before previous one went down.
*/
if (iter.frag)
ip6_fraglist_prepare(skb, &iter);
skb_set_delivery_time(skb, tstamp, tstamp_type);
err = output(net, sk, data, skb);
if (err || !iter.frag)
break;
skb = ip6_fraglist_next(&iter);
}
kfree(iter.tmp_hdr);
if (!err)
return 0;
kfree_skb_list(iter.frag);
return err;
}
slow_path:
/* This is a linearized skbuff, the original geometry is lost for us.
* This may also be a clone skbuff, we could preserve the geometry for
* the copies but probably not worth the effort.
*/
ip6_frag_init(skb, hlen, mtu, skb->dev->needed_tailroom,
LL_RESERVED_SPACE(skb->dev), prevhdr, nexthdr, frag_id,
&state);
while (state.left > 0) {
struct sk_buff *skb2;
skb2 = ip6_frag_next(skb, &state);
if (IS_ERR(skb2)) {
err = PTR_ERR(skb2);
goto blackhole;
}
skb_set_delivery_time(skb2, tstamp, tstamp_type);
err = output(net, sk, data, skb2);
if (err)
goto blackhole;
}
consume_skb(skb);
return err;
blackhole:
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(br_ip6_fragment);