Release 4.18 net/ipv6/ip6mr.c
/*
* Linux IPv6 multicast routing support for BSD pim6sd
* Based on net/ipv4/ipmr.c.
*
* (c) 2004 Mickael Hoerdt, <hoerdt@clarinet.u-strasbg.fr>
* LSIIT Laboratory, Strasbourg, France
* (c) 2004 Jean-Philippe Andriot, <jean-philippe.andriot@6WIND.com>
* 6WIND, Paris, France
* Copyright (C)2007,2008 USAGI/WIDE Project
* YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <linux/uaccess.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/kernel.h>
#include <linux/fcntl.h>
#include <linux/stat.h>
#include <linux/socket.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/compat.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
#include <net/raw.h>
#include <linux/notifier.h>
#include <linux/if_arp.h>
#include <net/checksum.h>
#include <net/netlink.h>
#include <net/fib_rules.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <linux/mroute6.h>
#include <linux/pim.h>
#include <net/addrconf.h>
#include <linux/netfilter_ipv6.h>
#include <linux/export.h>
#include <net/ip6_checksum.h>
#include <linux/netconf.h>
struct ip6mr_rule {
struct fib_rule common;
};
struct ip6mr_result {
struct mr_table *mrt;
};
/* Big lock, protecting vif table, mrt cache and mroute socket state.
Note that the changes are semaphored via rtnl_lock.
*/
static DEFINE_RWLOCK(mrt_lock);
/* Multicast router control variables */
/* Special spinlock for queue of unresolved entries */
static DEFINE_SPINLOCK(mfc_unres_lock);
/* We return to original Alan's scheme. Hash table of resolved
entries is changed only in process context and protected
with weak lock mrt_lock. Queue of unresolved entries is protected
with strong spinlock mfc_unres_lock.
In this case data path is free of exclusive locks at all.
*/
static struct kmem_cache *mrt_cachep __read_mostly;
static struct mr_table *ip6mr_new_table(struct net *net, u32 id);
static void ip6mr_free_table(struct mr_table *mrt);
static void ip6_mr_forward(struct net *net, struct mr_table *mrt,
struct sk_buff *skb, struct mfc6_cache *cache);
static int ip6mr_cache_report(struct mr_table *mrt, struct sk_buff *pkt,
mifi_t mifi, int assert);
static void mr6_netlink_event(struct mr_table *mrt, struct mfc6_cache *mfc,
int cmd);
static void mrt6msg_netlink_event(struct mr_table *mrt, struct sk_buff *pkt);
static int ip6mr_rtm_dumproute(struct sk_buff *skb,
struct netlink_callback *cb);
static void mroute_clean_tables(struct mr_table *mrt, bool all);
static void ipmr_expire_process(struct timer_list *t);
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
#define ip6mr_for_each_table(mrt, net) \
list_for_each_entry_rcu(mrt, &net->ipv6.mr6_tables, list)
static struct mr_table *ip6mr_mr_table_iter(struct net *net,
struct mr_table *mrt)
{
struct mr_table *ret;
if (!mrt)
ret = list_entry_rcu(net->ipv6.mr6_tables.next,
struct mr_table, list);
else
ret = list_entry_rcu(mrt->list.next,
struct mr_table, list);
if (&ret->list == &net->ipv6.mr6_tables)
return NULL;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 83 | 100.00% | 1 | 100.00% |
| Total | 83 | 100.00% | 1 | 100.00% |
static struct mr_table *ip6mr_get_table(struct net *net, u32 id)
{
struct mr_table *mrt;
ip6mr_for_each_table(mrt, net) {
if (mrt->id == id)
return mrt;
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 41 | 95.35% | 1 | 50.00% |
| Yuval Mintz | 2 | 4.65% | 1 | 50.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6,
struct mr_table **mrt)
{
int err;
struct ip6mr_result res;
struct fib_lookup_arg arg = {
.result = &res,
.flags = FIB_LOOKUP_NOREF,
};
err = fib_rules_lookup(net->ipv6.mr6_rules_ops,
flowi6_to_flowi(flp6), 0, &arg);
if (err < 0)
return err;
*mrt = res.mrt;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 70 | 81.40% | 1 | 25.00% |
| Hannes Frederic Sowa | 9 | 10.47% | 1 | 25.00% |
| David S. Miller | 6 | 6.98% | 1 | 25.00% |
| Yuval Mintz | 1 | 1.16% | 1 | 25.00% |
| Total | 86 | 100.00% | 4 | 100.00% |
static int ip6mr_rule_action(struct fib_rule *rule, struct flowi *flp,
int flags, struct fib_lookup_arg *arg)
{
struct ip6mr_result *res = arg->result;
struct mr_table *mrt;
switch (rule->action) {
case FR_ACT_TO_TBL:
break;
case FR_ACT_UNREACHABLE:
return -ENETUNREACH;
case FR_ACT_PROHIBIT:
return -EACCES;
case FR_ACT_BLACKHOLE:
default:
return -EINVAL;
}
mrt = ip6mr_get_table(rule->fr_net, rule->table);
if (!mrt)
return -EAGAIN;
res->mrt = mrt;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 101 | 98.06% | 1 | 33.33% |
| Ian Morris | 1 | 0.97% | 1 | 33.33% |
| Yuval Mintz | 1 | 0.97% | 1 | 33.33% |
| Total | 103 | 100.00% | 3 | 100.00% |
static int ip6mr_rule_match(struct fib_rule *rule, struct flowi *flp, int flags)
{
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static const struct nla_policy ip6mr_rule_policy[FRA_MAX + 1] = {
FRA_GENERIC_POLICY,
};
static int ip6mr_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
struct fib_rule_hdr *frh, struct nlattr **tb,
struct netlink_ext_ack *extack)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 30 | 85.71% | 1 | 50.00% |
| Roopa Prabhu | 5 | 14.29% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
static int ip6mr_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
struct nlattr **tb)
{
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
static int ip6mr_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
struct fib_rule_hdr *frh)
{
frh->dst_len = 0;
frh->src_len = 0;
frh->tos = 0;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 42 | 100.00% | 1 | 100.00% |
| Total | 42 | 100.00% | 1 | 100.00% |
static const struct fib_rules_ops __net_initconst ip6mr_rules_ops_template = {
.family = RTNL_FAMILY_IP6MR,
.rule_size = sizeof(struct ip6mr_rule),
.addr_size = sizeof(struct in6_addr),
.action = ip6mr_rule_action,
.match = ip6mr_rule_match,
.configure = ip6mr_rule_configure,
.compare = ip6mr_rule_compare,
.fill = ip6mr_rule_fill,
.nlgroup = RTNLGRP_IPV6_RULE,
.policy = ip6mr_rule_policy,
.owner = THIS_MODULE,
};
static int __net_init ip6mr_rules_init(struct net *net)
{
struct fib_rules_ops *ops;
struct mr_table *mrt;
int err;
ops = fib_rules_register(&ip6mr_rules_ops_template, net);
if (IS_ERR(ops))
return PTR_ERR(ops);
INIT_LIST_HEAD(&net->ipv6.mr6_tables);
mrt = ip6mr_new_table(net, RT6_TABLE_DFLT);
if (IS_ERR(mrt)) {
err = PTR_ERR(mrt);
goto err1;
}
err = fib_default_rule_add(ops, 0x7fff, RT6_TABLE_DFLT, 0);
if (err < 0)
goto err2;
net->ipv6.mr6_rules_ops = ops;
return 0;
err2:
ip6mr_free_table(mrt);
err1:
fib_rules_unregister(ops);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 127 | 93.38% | 1 | 25.00% |
| Sabrina Dubroca | 7 | 5.15% | 1 | 25.00% |
| Yuval Mintz | 1 | 0.74% | 1 | 25.00% |
| Américo Wang | 1 | 0.74% | 1 | 25.00% |
| Total | 136 | 100.00% | 4 | 100.00% |
static void __net_exit ip6mr_rules_exit(struct net *net)
{
struct mr_table *mrt, *next;
rtnl_lock();
list_for_each_entry_safe(mrt, next, &net->ipv6.mr6_tables, list) {
list_del(&mrt->list);
ip6mr_free_table(mrt);
}
fib_rules_unregister(net->ipv6.mr6_rules_ops);
rtnl_unlock();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 43 | 71.67% | 1 | 20.00% |
| Eric Dumazet | 10 | 16.67% | 1 | 20.00% |
| Hannes Frederic Sowa | 3 | 5.00% | 1 | 20.00% |
| Américo Wang | 3 | 5.00% | 1 | 20.00% |
| Yuval Mintz | 1 | 1.67% | 1 | 20.00% |
| Total | 60 | 100.00% | 5 | 100.00% |
static int ip6mr_rules_dump(struct net *net, struct notifier_block *nb)
{
return fib_rules_dump(net, nb, RTNL_FAMILY_IP6MR);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
static unsigned int ip6mr_rules_seq_read(struct net *net)
{
return fib_rules_seq_read(net, RTNL_FAMILY_IP6MR);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
bool ip6mr_rule_default(const struct fib_rule *rule)
{
return fib_rule_matchall(rule) && rule->action == FR_ACT_TO_TBL &&
rule->table == RT6_TABLE_DFLT && !rule->l3mdev;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(ip6mr_rule_default);
#else
#define ip6mr_for_each_table(mrt, net) \
for (mrt = net->ipv6.mrt6; mrt; mrt = NULL)
static struct mr_table *ip6mr_mr_table_iter(struct net *net,
struct mr_table *mrt)
{
if (!mrt)
return net->ipv6.mrt6;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
static struct mr_table *ip6mr_get_table(struct net *net, u32 id)
{
return net->ipv6.mrt6;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 22 | 95.65% | 1 | 50.00% |
| Yuval Mintz | 1 | 4.35% | 1 | 50.00% |
| Total | 23 | 100.00% | 2 | 100.00% |
static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6,
struct mr_table **mrt)
{
*mrt = net->ipv6.mrt6;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 31 | 91.18% | 1 | 33.33% |
| David S. Miller | 2 | 5.88% | 1 | 33.33% |
| Yuval Mintz | 1 | 2.94% | 1 | 33.33% |
| Total | 34 | 100.00% | 3 | 100.00% |
static int __net_init ip6mr_rules_init(struct net *net)
{
struct mr_table *mrt;
mrt = ip6mr_new_table(net, RT6_TABLE_DFLT);
if (IS_ERR(mrt))
return PTR_ERR(mrt);
net->ipv6.mrt6 = mrt;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 28 | 56.00% | 1 | 50.00% |
| Sabrina Dubroca | 22 | 44.00% | 1 | 50.00% |
| Total | 50 | 100.00% | 2 | 100.00% |
static void __net_exit ip6mr_rules_exit(struct net *net)
{
rtnl_lock();
ip6mr_free_table(net->ipv6.mrt6);
net->ipv6.mrt6 = NULL;
rtnl_unlock();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 21 | 60.00% | 1 | 50.00% |
| Hannes Frederic Sowa | 14 | 40.00% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
static int ip6mr_rules_dump(struct net *net, struct notifier_block *nb)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static unsigned int ip6mr_rules_seq_read(struct net *net)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
#endif
static int ip6mr_hash_cmp(struct rhashtable_compare_arg *arg,
const void *ptr)
{
const struct mfc6_cache_cmp_arg *cmparg = arg->key;
struct mfc6_cache *c = (struct mfc6_cache *)ptr;
return !ipv6_addr_equal(&c->mf6c_mcastgrp, &cmparg->mf6c_mcastgrp) ||
!ipv6_addr_equal(&c->mf6c_origin, &cmparg->mf6c_origin);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 67 | 100.00% | 1 | 100.00% |
| Total | 67 | 100.00% | 1 | 100.00% |
static const struct rhashtable_params ip6mr_rht_params = {
.head_offset = offsetof(struct mr_mfc, mnode),
.key_offset = offsetof(struct mfc6_cache, cmparg),
.key_len = sizeof(struct mfc6_cache_cmp_arg),
.nelem_hint = 3,
.locks_mul = 1,
.obj_cmpfn = ip6mr_hash_cmp,
.automatic_shrinking = true,
};
static void ip6mr_new_table_set(struct mr_table *mrt,
struct net *net)
{
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
list_add_tail_rcu(&mrt->list, &net->ipv6.mr6_tables);
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
static struct mfc6_cache_cmp_arg ip6mr_mr_table_ops_cmparg_any = {
.mf6c_origin = IN6ADDR_ANY_INIT,
.mf6c_mcastgrp = IN6ADDR_ANY_INIT,
};
static struct mr_table_ops ip6mr_mr_table_ops = {
.rht_params = &ip6mr_rht_params,
.cmparg_any = &ip6mr_mr_table_ops_cmparg_any,
};
static struct mr_table *ip6mr_new_table(struct net *net, u32 id)
{
struct mr_table *mrt;
mrt = ip6mr_get_table(net, id);
if (mrt)
return mrt;
return mr_table_alloc(net, id, &ip6mr_mr_table_ops,
ipmr_expire_process, ip6mr_new_table_set);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 44 | 84.62% | 1 | 20.00% |
| Yuval Mintz | 8 | 15.38% | 4 | 80.00% |
| Total | 52 | 100.00% | 5 | 100.00% |
static void ip6mr_free_table(struct mr_table *mrt)
{
del_timer_sync(&mrt->ipmr_expire_timer);
mroute_clean_tables(mrt, true);
rhltable_destroy(&mrt->mfc_hash);
kfree(mrt);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 27 | 69.23% | 2 | 33.33% |
| Yuval Mintz | 9 | 23.08% | 2 | 33.33% |
| Nikolay Aleksandrov | 2 | 5.13% | 1 | 16.67% |
| Américo Wang | 1 | 2.56% | 1 | 16.67% |
| Total | 39 | 100.00% | 6 | 100.00% |
#ifdef CONFIG_PROC_FS
/* The /proc interfaces to multicast routing
* /proc/ip6_mr_cache /proc/ip6_mr_vif
*/
static void *ip6mr_vif_seq_start(struct seq_file *seq, loff_t *pos)
__acquires(mrt_lock)
{
struct mr_vif_iter *iter = seq->private;
struct net *net = seq_file_net(seq);
struct mr_table *mrt;
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT);
if (!mrt)
return ERR_PTR(-ENOENT);
iter->mrt = mrt;
read_lock(&mrt_lock);
return mr_vif_seq_start(seq, pos);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 38 | 44.71% | 1 | 16.67% |
| Hideaki Yoshifuji / 吉藤英明 | 33 | 38.82% | 1 | 16.67% |
| Benjamin Thery | 10 | 11.76% | 1 | 16.67% |
| Yuval Mintz | 3 | 3.53% | 2 | 33.33% |
| Ian Morris | 1 | 1.18% | 1 | 16.67% |
| Total | 85 | 100.00% | 6 | 100.00% |
static void ip6mr_vif_seq_stop(struct seq_file *seq, void *v)
__releases(mrt_lock)
{
read_unlock(&mrt_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)
{
struct mr_vif_iter *iter = seq->private;
struct mr_table *mrt = iter->mrt;
if (v == SEQ_START_TOKEN) {
seq_puts(seq,
"Interface BytesIn PktsIn BytesOut PktsOut Flags\n");
} else {
const struct vif_device *vif = v;
const char *name = vif->dev ? vif->dev->name : "none";
seq_printf(seq,
"%2td %-10s %8ld %7ld %8ld %7ld %05X\n",
vif - mrt->vif_table,
name, vif->bytes_in, vif->pkt_in,
vif->bytes_out, vif->pkt_out,
vif->flags);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 91 | 79.82% | 1 | 12.50% |
| Patrick McHardy | 12 | 10.53% | 2 | 25.00% |
| Benjamin Thery | 6 | 5.26% | 1 | 12.50% |
| Yuval Mintz | 4 | 3.51% | 3 | 37.50% |
| Al Viro | 1 | 0.88% | 1 | 12.50% |
| Total | 114 | 100.00% | 8 | 100.00% |
static const struct seq_operations ip6mr_vif_seq_ops = {
.start = ip6mr_vif_seq_start,
.next = mr_vif_seq_next,
.stop = ip6mr_vif_seq_stop,
.show = ip6mr_vif_seq_show,
};
static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos)
{
struct net *net = seq_file_net(seq);
struct mr_table *mrt;
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT);
if (!mrt)
return ERR_PTR(-ENOENT);
return mr_mfc_seq_start(seq, pos, mrt, &mfc_unres_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 26 | 40.00% | 3 | 33.33% |
| Hideaki Yoshifuji / 吉藤英明 | 25 | 38.46% | 1 | 11.11% |
| Benjamin Thery | 10 | 15.38% | 1 | 11.11% |
| Yuval Mintz | 3 | 4.62% | 3 | 33.33% |
| Ian Morris | 1 | 1.54% | 1 | 11.11% |
| Total | 65 | 100.00% | 9 | 100.00% |
static int ipmr_mfc_seq_show(struct seq_file *seq, void *v)
{
int n;
if (v == SEQ_START_TOKEN) {
seq_puts(seq,
"Group "
"Origin "
"Iif Pkts Bytes Wrong Oifs\n");
} else {
const struct mfc6_cache *mfc = v;
const struct mr_mfc_iter *it = seq->private;
struct mr_table *mrt = it->mrt;
seq_printf(seq, "%pI6 %pI6 %-3hd",
&mfc->mf6c_mcastgrp, &mfc->mf6c_origin,
mfc->_c.mfc_parent);
if (it->cache != &mrt->mfc_unres_queue) {
seq_printf(seq, " %8lu %8lu %8lu",
mfc->_c.mfc_un.res.pkt,
mfc->_c.mfc_un.res.bytes,
mfc->_c.mfc_un.res.wrong_if);
for (n = mfc->_c.mfc_un.res.minvif;
n < mfc->_c.mfc_un.res.maxvif; n++) {
if (VIF_EXISTS(mrt, n) &&
mfc->_c.mfc_un.res.ttls[n] < 255)
seq_printf(seq,
" %2d:%-3d", n,
mfc->_c.mfc_un.res.ttls[n]);
}
} else {
/* unresolved mfc_caches don't contain
* pkt, bytes and wrong_if values
*/
seq_printf(seq, " %8lu %8lu %8lu", 0ul, 0ul, 0ul);
}
seq_putc(seq, '\n');
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 173 | 71.49% | 1 | 9.09% |
| Benjamin Thery | 35 | 14.46% | 3 | 27.27% |
| Yuval Mintz | 21 | 8.68% | 3 | 27.27% |
| Patrick McHardy | 11 | 4.55% | 3 | 27.27% |
| Harvey Harrison | 2 | 0.83% | 1 | 9.09% |
| Total | 242 | 100.00% | 11 | 100.00% |
static const struct seq_operations ipmr_mfc_seq_ops = {
.start = ipmr_mfc_seq_start,
.next = mr_mfc_seq_next,
.stop = mr_mfc_seq_stop,
.show = ipmr_mfc_seq_show,
};
#endif
#ifdef CONFIG_IPV6_PIMSM_V2
static int pim6_rcv(struct sk_buff *skb)
{
struct pimreghdr *pim;
struct ipv6hdr *encap;
struct net_device *reg_dev = NULL;
struct net *net = dev_net(skb->dev);
struct mr_table *mrt;
struct flowi6 fl6 = {
.flowi6_iif = skb->dev->ifindex,
.flowi6_mark = skb->mark,
};
int reg_vif_num;
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
goto drop;
pim = (struct pimreghdr *)skb_transport_header(skb);
if (pim->type != ((PIM_VERSION << 4) | PIM_TYPE_REGISTER) ||
(pim->flags & PIM_NULL_REGISTER) ||
(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
sizeof(*pim), IPPROTO_PIM,
csum_partial((void *)pim, sizeof(*pim), 0)) &&
csum_fold(skb_checksum(skb, 0, skb->len, 0))))
goto drop;
/* check if the inner packet is destined to mcast group */
encap = (struct ipv6hdr *)(skb_transport_header(skb) +
sizeof(*pim));
if (!ipv6_addr_is_multicast(&encap->daddr) ||
encap->payload_len == 0 ||
ntohs(encap->payload_len) + sizeof(*pim) > skb->len)
goto drop;
if (ip6mr_fib_lookup(net, &fl6, &mrt) < 0)
goto drop;
reg_vif_num = mrt->mroute_reg_vif_num;
read_lock(&mrt_lock);
if (reg_vif_num >= 0)
reg_dev = mrt->vif_table[reg_vif_num].dev;
if (reg_dev)
dev_hold(reg_dev);
read_unlock(&mrt_lock);
if (!reg_dev)
goto drop;
skb->mac_header = skb->network_header;
skb_pull(skb, (u8 *)encap - skb->data);
skb_reset_network_header(skb);
skb->protocol = htons(ETH_P_IPV6);
skb->ip_summed = CHECKSUM_NONE;
skb_tunnel_rx(skb, reg_dev, dev_net(reg_dev));
netif_rx(skb);
dev_put(reg_dev);
return 0;
drop:
kfree_skb(skb);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 290 | 72.50% | 2 | 14.29% |
| Patrick McHardy | 45 | 11.25% | 2 | 14.29% |
| Thomas Goff | 31 | 7.75% | 1 | 7.14% |
| Benjamin Thery | 17 | 4.25% | 2 | 14.29% |
| Nicolas Dichtel | 5 | 1.25% | 1 | 7.14% |
| David S. Miller | 5 | 1.25% | 1 | 7.14% |
| Eric Dumazet | 2 | 0.50% | 1 | 7.14% |
| Yuval Mintz | 2 | 0.50% | 1 | 7.14% |
| Ian Morris | 1 | 0.25% | 1 | 7.14% |
| Nikolay Aleksandrov | 1 | 0.25% | 1 | 7.14% |
| Cesar Eduardo Barros | 1 | 0.25% | 1 | 7.14% |
| Total | 400 | 100.00% | 14 | 100.00% |
static const struct inet6_protocol pim6_protocol = {
.handler = pim6_rcv,
};
/* Service routines creating virtual interfaces: PIMREG */
static netdev_tx_t reg_vif_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net *net = dev_net(dev);
struct mr_table *mrt;
struct flowi6 fl6 = {
.flowi6_oif = dev->ifindex,
.flowi6_iif = skb->skb_iif ? : LOOPBACK_IFINDEX,
.flowi6_mark = skb->mark,
};
int err;
err = ip6mr_fib_lookup(net, &fl6, &mrt);
if (err < 0) {
kfree_skb(skb);
return err;
}
read_lock(&mrt_lock);
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
ip6mr_cache_report(mrt, skb, mrt->mroute_reg_vif_num, MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return NETDEV_TX_OK;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 55 | 38.46% | 1 | 8.33% |
| Patrick McHardy | 53 | 37.06% | 3 | 25.00% |
| Benjamin Thery | 13 | 9.09% | 2 | 16.67% |
| Ben Greear | 7 | 4.90% | 1 | 8.33% |
| David S. Miller | 6 | 4.20% | 1 | 8.33% |
| Pavel Emelyanov | 4 | 2.80% | 1 | 8.33% |
| Cong Wang | 3 | 2.10% | 1 | 8.33% |
| Yuval Mintz | 1 | 0.70% | 1 | 8.33% |
| Stephen Hemminger | 1 | 0.70% | 1 | 8.33% |
| Total | 143 | 100.00% | 12 | 100.00% |
static int reg_vif_get_iflink(const struct net_device *dev)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
static const struct net_device_ops reg_vif_netdev_ops = {
.ndo_start_xmit = reg_vif_xmit,
.ndo_get_iflink = reg_vif_get_iflink,
};
static void reg_vif_setup(struct net_device *dev)
{
dev->type = ARPHRD_PIMREG;
dev->mtu = 1500 - sizeof(struct ipv6hdr) - 8;
dev->flags = IFF_NOARP;
dev->netdev_ops = ®_vif_netdev_ops;
dev->needs_free_netdev = true;
dev->features |= NETIF_F_NETNS_LOCAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 45 | 80.36% | 1 | 25.00% |
| Thomas Goff | 6 | 10.71% | 1 | 25.00% |
| Stephen Hemminger | 3 | 5.36% | 1 | 25.00% |
| David S. Miller | 2 | 3.57% | 1 | 25.00% |
| Total | 56 | 100.00% | 4 | 100.00% |
static struct net_device *ip6mr_reg_vif(struct net *net, struct mr_table *mrt)
{
struct net_device *dev;
char name[IFNAMSIZ];
if (mrt->id == RT6_TABLE_DFLT)
sprintf(name, "pim6reg");
else
sprintf(name, "pim6reg%u", mrt->id);
dev = alloc_netdev(0, name, NET_NAME_UNKNOWN, reg_vif_setup);
if (!dev)
return NULL;
dev_net_set(dev, net);
if (register_netdevice(dev)) {
free_netdev(dev);
return NULL;
}
if (dev_open(dev))
goto failure;
dev_hold(dev);
return dev;
failure:
unregister_netdevice(dev);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 70 | 54.26% | 1 | 12.50% |
| Patrick McHardy | 38 | 29.46% | 1 | 12.50% |
| Benjamin Thery | 11 | 8.53% | 1 | 12.50% |
| Wang Chen | 5 | 3.88% | 1 | 12.50% |
| Tom Gundersen | 2 | 1.55% | 1 | 12.50% |
| Ian Morris | 1 | 0.78% | 1 | 12.50% |
| Pavel Emelyanov | 1 | 0.78% | 1 | 12.50% |
| Yuval Mintz | 1 | 0.78% | 1 | 12.50% |
| Total | 129 | 100.00% | 8 | 100.00% |
#endif
static int call_ip6mr_vif_entry_notifiers(struct net *net,
enum fib_event_type event_type,
struct vif_device *vif,
mifi_t vif_index, u32 tb_id)
{
return mr_call_vif_notifiers(net, RTNL_FAMILY_IP6MR, event_type,
vif, vif_index, tb_id,
&net->ipv6.ipmr_seq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 49 | 100.00% | 1 | 100.00% |
| Total | 49 | 100.00% | 1 | 100.00% |
static int call_ip6mr_mfc_entry_notifiers(struct net *net,
enum fib_event_type event_type,
struct mfc6_cache *mfc, u32 tb_id)
{
return mr_call_mfc_notifiers(net, RTNL_FAMILY_IP6MR, event_type,
&mfc->_c, tb_id, &net->ipv6.ipmr_seq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 47 | 100.00% | 1 | 100.00% |
| Total | 47 | 100.00% | 1 | 100.00% |
/* Delete a VIF entry */
static int mif6_delete(struct mr_table *mrt, int vifi, int notify,
struct list_head *head)
{
struct vif_device *v;
struct net_device *dev;
struct inet6_dev *in6_dev;
if (vifi < 0 || vifi >= mrt->maxvif)
return -EADDRNOTAVAIL;
v = &mrt->vif_table[vifi];
if (VIF_EXISTS(mrt, vifi))
call_ip6mr_vif_entry_notifiers(read_pnet(&mrt->net),
FIB_EVENT_VIF_DEL, v, vifi,
mrt->id);
write_lock_bh(&mrt_lock);
dev = v->dev;
v->dev = NULL;
if (!dev) {
write_unlock_bh(&mrt_lock);
return -EADDRNOTAVAIL;
}
#ifdef CONFIG_IPV6_PIMSM_V2
if (vifi == mrt->mroute_reg_vif_num)
mrt->mroute_reg_vif_num = -1;
#endif
if (vifi + 1 == mrt->maxvif) {
int tmp;
for (tmp = vifi - 1; tmp >= 0; tmp--) {
if (VIF_EXISTS(mrt, tmp))
break;
}
mrt->maxvif = tmp + 1;
}
write_unlock_bh(&mrt_lock);
dev_set_allmulti(dev, -1);
in6_dev = __in6_dev_get(dev);
if (in6_dev) {
in6_dev->cnf.mc_forwarding--;
inet6_netconf_notify_devconf(dev_net(dev), RTM_NEWNETCONF,
NETCONFA_MC_FORWARDING,
dev->ifindex, &in6_dev->cnf);
}
if ((v->flags & MIFF_REGISTER) && !notify)
unregister_netdevice_queue(dev, head);
dev_put(dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 165 | 58.72% | 2 | 14.29% |
| Yuval Mintz | 34 | 12.10% | 3 | 21.43% |
| Thomas Goff | 23 | 8.19% | 1 | 7.14% |
| Nicolas Dichtel | 21 | 7.47% | 1 | 7.14% |
| Benjamin Thery | 12 | 4.27% | 3 | 21.43% |
| Patrick McHardy | 8 | 2.85% | 1 | 7.14% |
| Nikolay Aleksandrov | 8 | 2.85% | 1 | 7.14% |
| Eric Dumazet | 8 | 2.85% | 1 | 7.14% |
| David Ahern | 2 | 0.71% | 1 | 7.14% |
| Total | 281 | 100.00% | 14 | 100.00% |
static inline void ip6mr_cache_free_rcu(struct rcu_head *head)
{
struct mr_mfc *c = container_of(head, struct mr_mfc, rcu);
kmem_cache_free(mrt_cachep, (struct mfc6_cache *)c);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 39 | 100.00% | 2 | 100.00% |
| Total | 39 | 100.00% | 2 | 100.00% |
static inline void ip6mr_cache_free(struct mfc6_cache *c)
{
call_rcu(&c->_c.rcu, ip6mr_cache_free_rcu);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Thery | 16 | 66.67% | 1 | 33.33% |
| Yuval Mintz | 8 | 33.33% | 2 | 66.67% |
| Total | 24 | 100.00% | 3 | 100.00% |
/* Destroy an unresolved cache entry, killing queued skbs
and reporting error to netlink readers.
*/
static void ip6mr_destroy_unres(struct mr_table *mrt, struct mfc6_cache *c)
{
struct net *net = read_pnet(&mrt->net);
struct sk_buff *skb;
atomic_dec(&mrt->cache_resolve_queue_len);
while ((skb = skb_dequeue(&c->_c.mfc_un.unres.unresolved)) != NULL) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct ipv6hdr));
nlh->nlmsg_type = NLMSG_ERROR;
nlh->nlmsg_len = nlmsg_msg_size(sizeof(struct nlmsgerr));
skb_trim(skb, nlh->nlmsg_len);
((struct nlmsgerr *)nlmsg_data(nlh))->error = -ETIMEDOUT;
rtnl_unicast(skb, net, NETLINK_CB(skb).portid);
} else
kfree_skb(skb);
}
ip6mr_cache_free(c);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 138 | 83.64% | 1 | 11.11% |
| Patrick McHardy | 18 | 10.91% | 2 | 22.22% |
| Yuval Mintz | 3 | 1.82% | 2 | 22.22% |
| Benjamin Thery | 3 | 1.82% | 2 | 22.22% |
| Hong Zhi Guo | 2 | 1.21% | 1 | 11.11% |
| Eric W. Biedermann | 1 | 0.61% | 1 | 11.11% |
| Total | 165 | 100.00% | 9 | 100.00% |
/* Timer process for all the unresolved queue. */
static void ipmr_do_expire_process(struct mr_table *mrt)
{
unsigned long now = jiffies;
unsigned long expires = 10 * HZ;
struct mr_mfc *c, *next;
list_for_each_entry_safe(c, next, &mrt->mfc_unres_queue, list) {
if (time_after(c->mfc_un.unres.expires, now)) {
/* not yet... */
unsigned long interval = c->mfc_un.unres.expires - now;
if (interval < expires)
expires = interval;
continue;
}
list_del(&c->list);
mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE);
ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c);
}
if (!list_empty(&mrt->mfc_unres_queue))
mod_timer(&mrt->ipmr_expire_timer, jiffies + expires);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 93 | 64.14% | 1 | 12.50% |
| Patrick McHardy | 29 | 20.00% | 4 | 50.00% |
| Yuval Mintz | 14 | 9.66% | 2 | 25.00% |
| Nicolas Dichtel | 9 | 6.21% | 1 | 12.50% |
| Total | 145 | 100.00% | 8 | 100.00% |
static void ipmr_expire_process(struct timer_list *t)
{
struct mr_table *mrt = from_timer(mrt, t, ipmr_expire_timer);
if (!spin_trylock(&mfc_unres_lock)) {
mod_timer(&mrt->ipmr_expire_timer, jiffies + 1);
return;
}
if (!list_empty(&mrt->mfc_unres_queue))
ipmr_do_expire_process(mrt);
spin_unlock(&mfc_unres_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 42 | 59.15% | 1 | 16.67% |
| Patrick McHardy | 15 | 21.13% | 3 | 50.00% |
| Kees Cook | 12 | 16.90% | 1 | 16.67% |
| Yuval Mintz | 2 | 2.82% | 1 | 16.67% |
| Total | 71 | 100.00% | 6 | 100.00% |
/* Fill oifs list. It is called under write locked mrt_lock. */
static void ip6mr_update_thresholds(struct mr_table *mrt,
struct mr_mfc *cache,
unsigned char *ttls)
{
int vifi;
cache->mfc_un.res.minvif = MAXMIFS;
cache->mfc_un.res.maxvif = 0;
memset(cache->mfc_un.res.ttls, 255, MAXMIFS);
for (vifi = 0; vifi < mrt->maxvif; vifi++) {
if (VIF_EXISTS(mrt, vifi) &&
ttls[vifi] && ttls[vifi] < 255) {
cache->mfc_un.res.ttls[vifi] = ttls[vifi];
if (cache->mfc_un.res.minvif > vifi)
cache->mfc_un.res.minvif = vifi;
if (cache->mfc_un.res.maxvif <= vifi)
cache->mfc_un.res.maxvif = vifi + 1;
}
}
cache->mfc_un.res.lastuse = jiffies;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 148 | 86.55% | 1 | 11.11% |
| Nikolay Aleksandrov | 10 | 5.85% | 1 | 11.11% |
| Patrick McHardy | 6 | 3.51% | 2 | 22.22% |
| Yuval Mintz | 3 | 1.75% | 2 | 22.22% |
| Rami Rosen | 2 | 1.17% | 1 | 11.11% |
| Benjamin Thery | 2 | 1.17% | 2 | 22.22% |
| Total | 171 | 100.00% | 9 | 100.00% |
static int mif6_add(struct net *net, struct mr_table *mrt,
struct mif6ctl *vifc, int mrtsock)
{
int vifi = vifc->mif6c_mifi;
struct vif_device *v = &mrt->vif_table[vifi];
struct net_device *dev;
struct inet6_dev *in6_dev;
int err;
/* Is vif busy ? */
if (VIF_EXISTS(mrt, vifi))
return -EADDRINUSE;
switch (vifc->mif6c_flags) {
#ifdef CONFIG_IPV6_PIMSM_V2
case MIFF_REGISTER:
/*
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
if (mrt->mroute_reg_vif_num >= 0)
return -EADDRINUSE;
dev = ip6mr_reg_vif(net, mrt);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
if (err) {
unregister_netdevice(dev);
dev_put(dev);
return err;
}
break;
#endif
case 0:
dev = dev_get_by_index(net, vifc->mif6c_pifi);
if (!dev)
return -EADDRNOTAVAIL;
err = dev_set_allmulti(dev, 1);
if (err) {
dev_put(dev);
return err;
}
break;
default:
return -EINVAL;
}
in6_dev = __in6_dev_get(dev);
if (in6_dev) {
in6_dev->cnf.mc_forwarding++;
inet6_netconf_notify_devconf(dev_net(dev), RTM_NEWNETCONF,
NETCONFA_MC_FORWARDING,
dev->ifindex, &in6_dev->cnf);
}
/* Fill in the VIF structures */
vif_device_init(v, dev, vifc->vifc_rate_limit, vifc->vifc_threshold,
vifc->mif6c_flags | (!mrtsock ? VIFF_STATIC : 0),
MIFF_REGISTER);
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
v->dev = dev;
#ifdef CONFIG_IPV6_PIMSM_V2
if (v->flags & MIFF_REGISTER)
mrt->mroute_reg_vif_num = vifi;
#endif
if (vifi + 1 > mrt->maxvif)
mrt->maxvif = vifi + 1;
write_unlock_bh(&mrt_lock);
call_ip6mr_vif_entry_notifiers(net, FIB_EVENT_VIF_ADD,
v, vifi, mrt->id);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 180 | 52.17% | 2 | 12.50% |
| Wang Chen | 54 | 15.65% | 2 | 12.50% |
| Yuval Mintz | 35 | 10.14% | 3 | 18.75% |
| Thomas Goff | 23 | 6.67% | 1 | 6.25% |
| Nicolas Dichtel | 22 | 6.38% | 2 | 12.50% |
| Benjamin Thery | 17 | 4.93% | 3 | 18.75% |
| Patrick McHardy | 12 | 3.48% | 2 | 12.50% |
| David Ahern | 2 | 0.58% | 1 | 6.25% |
| Total | 345 | 100.00% | 16 | 100.00% |
static struct mfc6_cache *ip6mr_cache_find(struct mr_table *mrt,
const struct in6_addr *origin,
const struct in6_addr *mcastgrp)
{
struct mfc6_cache_cmp_arg arg = {
.mf6c_origin = *origin,
.mf6c_mcastgrp = *mcastgrp,
};
return mr_mfc_find(mrt, &arg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 23 | 44.23% | 3 | 33.33% |
| Hideaki Yoshifuji / 吉藤英明 | 19 | 36.54% | 1 | 11.11% |
| Nicolas Dichtel | 3 | 5.77% | 1 | 11.11% |
| Benjamin Thery | 3 | 5.77% | 1 | 11.11% |
| Eric Dumazet | 2 | 3.85% | 1 | 11.11% |
| Patrick McHardy | 2 | 3.85% | 2 | 22.22% |
| Total | 52 | 100.00% | 9 | 100.00% |
/* Look for a (*,G) entry */
static struct mfc6_cache *ip6mr_cache_find_any(struct mr_table *mrt,
struct in6_addr *mcastgrp,
mifi_t mifi)
{
struct mfc6_cache_cmp_arg arg = {
.mf6c_origin = in6addr_any,
.mf6c_mcastgrp = *mcastgrp,
};
if (ipv6_addr_any(mcastgrp))
return mr_mfc_find_any_parent(mrt, mifi);
return mr_mfc_find_any(mrt, mifi, &arg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 42 | 65.62% | 1 | 25.00% |
| Yuval Mintz | 22 | 34.38% | 3 | 75.00% |
| Total | 64 | 100.00% | 4 | 100.00% |
/* Look for a (S,G,iif) entry if parent != -1 */
static struct mfc6_cache *
ip6mr_cache_find_parent(struct mr_table *mrt,
const struct in6_addr *origin,
const struct in6_addr *mcastgrp,
int parent)
{
struct mfc6_cache_cmp_arg arg = {
.mf6c_origin = *origin,
.mf6c_mcastgrp = *mcastgrp,
};
return mr_mfc_find_parent(mrt, &arg, parent);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 57 | 100.00% | 3 | 100.00% |
| Total | 57 | 100.00% | 3 | 100.00% |
/* Allocate a multicast cache entry */
static struct mfc6_cache *ip6mr_cache_alloc(void)
{
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
if (!c)
return NULL;
c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
c->_c.mfc_un.res.minvif = MAXMIFS;
c->_c.free = ip6mr_cache_free_rcu;
refcount_set(&c->_c.mfc_un.res.refcount, 1);
return c;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 39 | 45.88% | 1 | 12.50% |
| Yuval Mintz | 28 | 32.94% | 2 | 25.00% |
| Thomas Goff | 14 | 16.47% | 1 | 12.50% |
| Patrick McHardy | 1 | 1.18% | 1 | 12.50% |
| Joe Perches | 1 | 1.18% | 1 | 12.50% |
| Ian Morris | 1 | 1.18% | 1 | 12.50% |
| Rami Rosen | 1 | 1.18% | 1 | 12.50% |
| Total | 85 | 100.00% | 8 | 100.00% |
static struct mfc6_cache *ip6mr_cache_alloc_unres(void)
{
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC);
if (!c)
return NULL;
skb_queue_head_init(&c->_c.mfc_un.unres.unresolved);
c->_c.mfc_un.unres.expires = jiffies + 10 * HZ;
return c;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 56 | 88.89% | 1 | 20.00% |
| Yuval Mintz | 4 | 6.35% | 1 | 20.00% |
| Ian Morris | 1 | 1.59% | 1 | 20.00% |
| Patrick McHardy | 1 | 1.59% | 1 | 20.00% |
| Joe Perches | 1 | 1.59% | 1 | 20.00% |
| Total | 63 | 100.00% | 5 | 100.00% |
/*
* A cache entry has gone into a resolved state from queued
*/
static void ip6mr_cache_resolve(struct net *net, struct mr_table *mrt,
struct mfc6_cache *uc, struct mfc6_cache *c)
{
struct sk_buff *skb;
/*
* Play the pending entries through our router
*/
while ((skb = __skb_dequeue(&uc->_c.mfc_un.unres.unresolved))) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct ipv6hdr));
if (mr_fill_mroute(mrt, skb, &c->_c,
nlmsg_data(nlh)) > 0) {
nlh->nlmsg_len = skb_tail_pointer(skb) - (u8 *)nlh;
} else {
nlh->nlmsg_type = NLMSG_ERROR;
nlh->nlmsg_len = nlmsg_msg_size(sizeof(struct nlmsgerr));
skb_trim(skb, nlh->nlmsg_len);
((struct nlmsgerr *)nlmsg_data(nlh))->error = -EMSGSIZE;
}
rtnl_unicast(skb, net, NETLINK_CB(skb).portid);
} else
ip6_mr_forward(net, mrt, skb, c);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 168 | 86.15% | 2 | 22.22% |
| Patrick McHardy | 16 | 8.21% | 2 | 22.22% |
| Yuval Mintz | 7 | 3.59% | 3 | 33.33% |
| Hong Zhi Guo | 3 | 1.54% | 1 | 11.11% |
| Eric W. Biedermann | 1 | 0.51% | 1 | 11.11% |
| Total | 195 | 100.00% | 9 | 100.00% |
/*
* Bounce a cache query up to pim6sd and netlink.
*
* Called under mrt_lock.
*/
static int ip6mr_cache_report(struct mr_table *mrt, struct sk_buff *pkt,
mifi_t mifi, int assert)
{
struct sock *mroute6_sk;
struct sk_buff *skb;
struct mrt6msg *msg;
int ret;
#ifdef CONFIG_IPV6_PIMSM_V2
if (assert == MRT6MSG_WHOLEPKT)
skb = skb_realloc_headroom(pkt, -skb_network_offset(pkt)
+sizeof(*msg));
else
#endif
skb = alloc_skb(sizeof(struct ipv6hdr) + sizeof(*msg), GFP_ATOMIC);
if (!skb)
return -ENOBUFS;
/* I suppose that internal messages
* do not require checksums */
skb->ip_summed = CHECKSUM_UNNECESSARY;
#ifdef CONFIG_IPV6_PIMSM_V2
if (assert == MRT6MSG_WHOLEPKT) {
/* Ugly, but we have no choice with this interface.
Duplicate old header, fix length etc.
And all this only to mangle msg->im6_msgtype and
to set msg->im6_mbz to "mbz" :-)
*/
skb_push(skb, -skb_network_offset(pkt));
skb_push(skb, sizeof(*msg));
skb_reset_transport_header(skb);
msg = (struct mrt6msg *)skb_transport_header(skb);
msg->im6_mbz = 0;
msg->im6_msgtype = MRT6MSG_WHOLEPKT;
msg->im6_mif = mrt->mroute_reg_vif_num;
msg->im6_pad = 0;
msg->im6_src = ipv6_hdr(pkt)->saddr;
msg->im6_dst = ipv6_hdr(pkt)->daddr;
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else
#endif
{
/*
* Copy the IP header
*/
skb_put(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
skb_copy_to_linear_data(skb, ipv6_hdr(pkt), sizeof(struct ipv6hdr));
/*
* Add our header
*/
skb_put(skb, sizeof(*msg));
skb_reset_transport_header(skb);
msg = (struct mrt6msg *)skb_transport_header(skb);
msg->im6_mbz = 0;
msg->im6_msgtype = assert;
msg->im6_mif = mifi;
msg->im6_pad = 0;
msg->im6_src = ipv6_hdr(pkt)->saddr;
msg->im6_dst = ipv6_hdr(pkt)->daddr;
skb_dst_set(skb, dst_clone(skb_dst(pkt)));
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
rcu_read_lock();
mroute6_sk = rcu_dereference(mrt->mroute_sk);
if (!mroute6_sk) {
rcu_read_unlock();
kfree_skb(skb);
return -EINVAL;
}
mrt6msg_netlink_event(mrt, skb);
/* Deliver to user space multicast routing algorithms */
ret = sock_queue_rcv_skb(mroute6_sk, skb);
rcu_read_unlock();
if (ret < 0) {
net_warn_ratelimited("mroute6: pending queue full, dropping entries\n");
kfree_skb(skb);
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 353 | 85.06% | 2 | 14.29% |
| Yuval Mintz | 25 | 6.02% | 2 | 14.29% |
| Benjamin Thery | 11 | 2.65% | 3 | 21.43% |
| Eric Dumazet | 7 | 1.69% | 1 | 7.14% |
| Julien Gomes | 7 | 1.69% | 1 | 7.14% |
| Alexey Dobriyan | 4 | 0.96% | 1 | 7.14% |
| Rami Rosen | 3 | 0.72% | 1 | 7.14% |
| Joe Perches | 2 | 0.48% | 1 | 7.14% |
| Patrick McHardy | 2 | 0.48% | 1 | 7.14% |
| Ian Morris | 1 | 0.24% | 1 | 7.14% |
| Total | 415 | 100.00% | 14 | 100.00% |
/* Queue a packet for resolution. It gets locked cache entry! */
static int ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi,
struct sk_buff *skb)
{
struct mfc6_cache *c;
bool found = false;
int err;
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry(c, &mrt->mfc_unres_queue, _c.list) {
if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) &&
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr)) {
found = true;
break;
}
}
if (!found) {
/*
* Create a new entry if allowable
*/
if (atomic_read(&mrt->cache_resolve_queue_len) >= 10 ||
(c = ip6mr_cache_alloc_unres()) == NULL) {
spin_unlock_bh(&mfc_unres_lock);
kfree_skb(skb);
return -ENOBUFS;
}
/* Fill in the new cache entry */
c->_c.mfc_parent = -1;
c->mf6c_origin = ipv6_hdr(skb)->saddr;
c->mf6c_mcastgrp = ipv6_hdr(skb)->daddr;
/*
* Reflect first query at pim6sd
*/
err = ip6mr_cache_report(mrt, skb, mifi, MRT6MSG_NOCACHE);
if (err < 0) {
/* If the report failed throw the cache entry
out - Brad Parker
*/
spin_unlock_bh(&mfc_unres_lock);
ip6mr_cache_free(c);
kfree_skb(skb);
return err;
}
atomic_inc(&mrt->cache_resolve_queue_len);
list_add(&c->_c.list, &mrt->mfc_unres_queue);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
ipmr_do_expire_process(mrt);
}
/* See if we can append the packet */
if (c->_c.mfc_un.unres.unresolved.qlen > 3) {
kfree_skb(skb);
err = -ENOBUFS;
} else {
skb_queue_tail(&c->_c.mfc_un.unres.unresolved, skb);
err = 0;
}
spin_unlock_bh(&mfc_unres_lock);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 230 | 74.92% | 1 | 9.09% |
| Patrick McHardy | 34 | 11.07% | 4 | 36.36% |
| Yuval Mintz | 20 | 6.51% | 2 | 18.18% |
| Benjamin Thery | 11 | 3.58% | 2 | 18.18% |
| Nicolas Dichtel | 9 | 2.93% | 1 | 9.09% |
| Rami Rosen | 3 | 0.98% | 1 | 9.09% |
| Total | 307 | 100.00% | 11 | 100.00% |
/*
* MFC6 cache manipulation by user space
*/
static int ip6mr_mfc_delete(struct mr_table *mrt, struct mf6cctl *mfc,
int parent)
{
struct mfc6_cache *c;
/* The entries are added/deleted only under RTNL */
rcu_read_lock();
c = ip6mr_cache_find_parent(mrt, &mfc->mf6cc_origin.sin6_addr,
&mfc->mf6cc_mcastgrp.sin6_addr, parent);
rcu_read_unlock();
if (!c)
return -ENOENT;
rhltable_remove(&mrt->mfc_hash, &c->_c.mnode, ip6mr_rht_params);
list_del_rcu(&c->_c.list);
call_ip6mr_mfc_entry_notifiers(read_pnet(&mrt->net),
FIB_EVENT_ENTRY_DEL, c, mrt->id);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
mr_cache_put(&c->_c);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 56 | 43.41% | 5 | 45.45% |
| Hideaki Yoshifuji / 吉藤英明 | 49 | 37.98% | 1 | 9.09% |
| Nicolas Dichtel | 14 | 10.85% | 2 | 18.18% |
| Patrick McHardy | 7 | 5.43% | 2 | 18.18% |
| Benjamin Thery | 3 | 2.33% | 1 | 9.09% |
| Total | 129 | 100.00% | 11 | 100.00% |
static int ip6mr_device_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net *net = dev_net(dev);
struct mr_table *mrt;
struct vif_device *v;
int ct;
if (event != NETDEV_UNREGISTER)
return NOTIFY_DONE;
ip6mr_for_each_table(mrt, net) {
v = &mrt->vif_table[0];
for (ct = 0; ct < mrt->maxvif; ct++, v++) {
if (v->dev == dev)
mif6_delete(mrt, ct, 1, NULL);
}
}
return NOTIFY_DONE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 83 | 68.60% | 1 | 11.11% |
| Patrick McHardy | 15 | 12.40% | 2 | 22.22% |
| Benjamin Thery | 13 | 10.74% | 1 | 11.11% |
| Jiri Pirko | 3 | 2.48% | 1 | 11.11% |
| Yuval Mintz | 3 | 2.48% | 2 | 22.22% |
| Nikolay Aleksandrov | 3 | 2.48% | 1 | 11.11% |
| Eric Dumazet | 1 | 0.83% | 1 | 11.11% |
| Total | 121 | 100.00% | 9 | 100.00% |
static unsigned int ip6mr_seq_read(struct net *net)
{
ASSERT_RTNL();
return net->ipv6.ipmr_seq + ip6mr_rules_seq_read(net);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 27 | 100.00% | 1 | 100.00% |
| Total | 27 | 100.00% | 1 | 100.00% |
static int ip6mr_dump(struct net *net, struct notifier_block *nb)
{
return mr_dump(net, nb, RTNL_FAMILY_IP6MR, ip6mr_rules_dump,
ip6mr_mr_table_iter, &mrt_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
static struct notifier_block ip6_mr_notifier = {
.notifier_call = ip6mr_device_event
};
static const struct fib_notifier_ops ip6mr_notifier_ops_template = {
.family = RTNL_FAMILY_IP6MR,
.fib_seq_read = ip6mr_seq_read,
.fib_dump = ip6mr_dump,
.owner = THIS_MODULE,
};
static int __net_init ip6mr_notifier_init(struct net *net)
{
struct fib_notifier_ops *ops;
net->ipv6.ipmr_seq = 0;
ops = fib_notifier_ops_register(&ip6mr_notifier_ops_template, net);
if (IS_ERR(ops))
return PTR_ERR(ops);
net->ipv6.ip6mr_notifier_ops = ops;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 59 | 100.00% | 1 | 100.00% |
| Total | 59 | 100.00% | 1 | 100.00% |
static void __net_exit ip6mr_notifier_exit(struct net *net)
{
fib_notifier_ops_unregister(net->ipv6.ip6mr_notifier_ops);
net->ipv6.ip6mr_notifier_ops = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
/* Setup for IP multicast routing */
static int __net_init ip6mr_net_init(struct net *net)
{
int err;
err = ip6mr_notifier_init(net);
if (err)
return err;
err = ip6mr_rules_init(net);
if (err < 0)
goto ip6mr_rules_fail;
#ifdef CONFIG_PROC_FS
err = -ENOMEM;
if (!proc_create_net("ip6_mr_vif", 0, net->proc_net, &ip6mr_vif_seq_ops,
sizeof(struct mr_vif_iter)))
goto proc_vif_fail;
if (!proc_create_net("ip6_mr_cache", 0, net->proc_net, &ipmr_mfc_seq_ops,
sizeof(struct mr_mfc_iter)))
goto proc_cache_fail;
#endif
return 0;
#ifdef CONFIG_PROC_FS
proc_cache_fail:
remove_proc_entry("ip6_mr_vif", net->proc_net);
proc_vif_fail:
ip6mr_rules_exit(net);
#endif
ip6mr_rules_fail:
ip6mr_notifier_exit(net);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Thery | 82 | 57.34% | 3 | 33.33% |
| Yuval Mintz | 21 | 14.69% | 1 | 11.11% |
| Christoph Hellwig | 16 | 11.19% | 1 | 11.11% |
| Gao Feng | 13 | 9.09% | 2 | 22.22% |
| Patrick McHardy | 11 | 7.69% | 2 | 22.22% |
| Total | 143 | 100.00% | 9 | 100.00% |
static void __net_exit ip6mr_net_exit(struct net *net)
{
#ifdef CONFIG_PROC_FS
remove_proc_entry("ip6_mr_cache", net->proc_net);
remove_proc_entry("ip6_mr_vif", net->proc_net);
#endif
ip6mr_rules_exit(net);
ip6mr_notifier_exit(net);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Thery | 28 | 62.22% | 3 | 50.00% |
| Gao Feng | 10 | 22.22% | 1 | 16.67% |
| Yuval Mintz | 5 | 11.11% | 1 | 16.67% |
| Patrick McHardy | 2 | 4.44% | 1 | 16.67% |
| Total | 45 | 100.00% | 6 | 100.00% |
static struct pernet_operations ip6mr_net_ops = {
.init = ip6mr_net_init,
.exit = ip6mr_net_exit,
};
int __init ip6_mr_init(void)
{
int err;
mrt_cachep = kmem_cache_create("ip6_mrt_cache",
sizeof(struct mfc6_cache),
0, SLAB_HWCACHE_ALIGN,
NULL);
if (!mrt_cachep)
return -ENOMEM;
err = register_pernet_subsys(&ip6mr_net_ops);
if (err)
goto reg_pernet_fail;
err = register_netdevice_notifier(&ip6_mr_notifier);
if (err)
goto reg_notif_fail;
#ifdef CONFIG_IPV6_PIMSM_V2
if (inet6_add_protocol(&pim6_protocol, IPPROTO_PIM) < 0) {
pr_err("%s: can't add PIM protocol\n", __func__);
err = -EAGAIN;
goto add_proto_fail;
}
#endif
err = rtnl_register_module(THIS_MODULE, RTNL_FAMILY_IP6MR, RTM_GETROUTE,
NULL, ip6mr_rtm_dumproute, 0);
if (err == 0)
return 0;
#ifdef CONFIG_IPV6_PIMSM_V2
inet6_del_protocol(&pim6_protocol, IPPROTO_PIM);
add_proto_fail:
unregister_netdevice_notifier(&ip6_mr_notifier);
#endif
reg_notif_fail:
unregister_pernet_subsys(&ip6mr_net_ops);
reg_pernet_fail:
kmem_cache_destroy(mrt_cachep);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Goff | 43 | 25.60% | 1 | 10.00% |
| Hideaki Yoshifuji / 吉藤英明 | 37 | 22.02% | 1 | 10.00% |
| Benjamin Thery | 27 | 16.07% | 2 | 20.00% |
| Wang Chen | 26 | 15.48% | 1 | 10.00% |
| Florian Westphal | 20 | 11.90% | 2 | 20.00% |
| Patrick McHardy | 10 | 5.95% | 1 | 10.00% |
| Joe Perches | 4 | 2.38% | 1 | 10.00% |
| Greg Rose | 1 | 0.60% | 1 | 10.00% |
| Total | 168 | 100.00% | 10 | 100.00% |
void ip6_mr_cleanup(void)
{
rtnl_unregister(RTNL_FAMILY_IP6MR, RTM_GETROUTE);
#ifdef CONFIG_IPV6_PIMSM_V2
inet6_del_protocol(&pim6_protocol, IPPROTO_PIM);
#endif
unregister_netdevice_notifier(&ip6_mr_notifier);
unregister_pernet_subsys(&ip6mr_net_ops);
kmem_cache_destroy(mrt_cachep);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Duan Jiong | 20 | 45.45% | 1 | 25.00% |
| Wang Chen | 17 | 38.64% | 1 | 25.00% |
| Benjamin Thery | 6 | 13.64% | 1 | 25.00% |
| Hideaki Yoshifuji / 吉藤英明 | 1 | 2.27% | 1 | 25.00% |
| Total | 44 | 100.00% | 4 | 100.00% |
static int ip6mr_mfc_add(struct net *net, struct mr_table *mrt,
struct mf6cctl *mfc, int mrtsock, int parent)
{
unsigned char ttls[MAXMIFS];
struct mfc6_cache *uc, *c;
struct mr_mfc *_uc;
bool found;
int i, err;
if (mfc->mf6cc_parent >= MAXMIFS)
return -ENFILE;
memset(ttls, 255, MAXMIFS);
for (i = 0; i < MAXMIFS; i++) {
if (IF_ISSET(i, &mfc->mf6cc_ifset))
ttls[i] = 1;
}
/* The entries are added/deleted only under RTNL */
rcu_read_lock();
c = ip6mr_cache_find_parent(mrt, &mfc->mf6cc_origin.sin6_addr,
&mfc->mf6cc_mcastgrp.sin6_addr, parent);
rcu_read_unlock();
if (c) {
write_lock_bh(&mrt_lock);
c->_c.mfc_parent = mfc->mf6cc_parent;
ip6mr_update_thresholds(mrt, &c->_c, ttls);
if (!mrtsock)
c->_c.mfc_flags |= MFC_STATIC;
write_unlock_bh(&mrt_lock);
call_ip6mr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE,
c, mrt->id);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
return 0;
}
if (!ipv6_addr_any(&mfc->mf6cc_mcastgrp.sin6_addr) &&
!ipv6_addr_is_multicast(&mfc->mf6cc_mcastgrp.sin6_addr))
return -EINVAL;
c = ip6mr_cache_alloc();
if (!c)
return -ENOMEM;
c->mf6c_origin = mfc->mf6cc_origin.sin6_addr;
c->mf6c_mcastgrp = mfc->mf6cc_mcastgrp.sin6_addr;
c->_c.mfc_parent = mfc->mf6cc_parent;
ip6mr_update_thresholds(mrt, &c->_c, ttls);
if (!mrtsock)
c->_c.mfc_flags |= MFC_STATIC;
err = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->_c.mnode,
ip6mr_rht_params);
if (err) {
pr_err("ip6mr: rhtable insert error %d\n", err);
ip6mr_cache_free(c);
return err;
}
list_add_tail_rcu(&c->_c.list, &mrt->mfc_cache_list);
/* Check to see if we resolved a queued list. If so we
* need to send on the frames and tidy up.
*/
found = false;
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry(_uc, &mrt->mfc_unres_queue, list) {
uc = (struct mfc6_cache *)_uc;
if (ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) &&
ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) {
list_del(&_uc->list);
atomic_dec(&mrt->cache_resolve_queue_len);
found = true;
break;
}
}
if (list_empty(&mrt->mfc_unres_queue))
del_timer(&mrt->ipmr_expire_timer);
spin_unlock_bh(&mfc_unres_lock);
if (found) {
ip6mr_cache_resolve(net, mrt, uc, c);
ip6mr_cache_free(uc);
}
call_ip6mr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_ADD,
c, mrt->id);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 284 | 53.89% | 1 | 5.88% |
| Yuval Mintz | 131 | 24.86% | 4 | 23.53% |
| Patrick McHardy | 61 | 11.57% | 5 | 29.41% |
| Nicolas Dichtel | 33 | 6.26% | 2 | 11.76% |
| Benjamin Thery | 15 | 2.85% | 3 | 17.65% |
| Rami Rosen | 2 | 0.38% | 1 | 5.88% |
| Ian Morris | 1 | 0.19% | 1 | 5.88% |
| Total | 527 | 100.00% | 17 | 100.00% |
/*
* Close the multicast socket, and clear the vif tables etc
*/
static void mroute_clean_tables(struct mr_table *mrt, bool all)
{
struct mr_mfc *c, *tmp;
LIST_HEAD(list);
int i;
/* Shut down all active vif entries */
for (i = 0; i < mrt->maxvif; i++) {
if (!all && (mrt->vif_table[i].flags & VIFF_STATIC))
continue;
mif6_delete(mrt, i, 0, &list);
}
unregister_netdevice_many(&list);
/* Wipe the cache */
list_for_each_entry_safe(c, tmp, &mrt->mfc_cache_list, list) {
if (!all && (c->mfc_flags & MFC_STATIC))
continue;
rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params);
list_del_rcu(&c->list);
mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE);
mr_cache_put(c);
}
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry_safe(c, tmp, &mrt->mfc_unres_queue, list) {
list_del(&c->list);
call_ip6mr_mfc_entry_notifiers(read_pnet(&mrt->net),
FIB_EVENT_ENTRY_DEL,
(struct mfc6_cache *)c,
mrt->id);
mr6_netlink_event(mrt, (struct mfc6_cache *)c,
RTM_DELROUTE);
ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c);
}
spin_unlock_bh(&mfc_unres_lock);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 100 | 40.00% | 1 | 7.14% |
| Yuval Mintz | 70 | 28.00% | 5 | 35.71% |
| Patrick McHardy | 36 | 14.40% | 3 | 21.43% |
| Nicolas Dichtel | 18 | 7.20% | 1 | 7.14% |
| Nikolay Aleksandrov | 13 | 5.20% | 2 | 14.29% |
| Eric Dumazet | 9 | 3.60% | 1 | 7.14% |
| Benjamin Thery | 4 | 1.60% | 1 | 7.14% |
| Total | 250 | 100.00% | 14 | 100.00% |
static int ip6mr_sk_init(struct mr_table *mrt, struct sock *sk)
{
int err = 0;
struct net *net = sock_net(sk);
rtnl_lock();
write_lock_bh(&mrt_lock);
if (rtnl_dereference(mrt->mroute_sk)) {
err = -EADDRINUSE;
} else {
rcu_assign_pointer(mrt->mroute_sk, sk);
sock_set_flag(sk, SOCK_RCU_FREE);
net->ipv6.devconf_all->mc_forwarding++;
}
write_unlock_bh(&mrt_lock);
if (!err)
inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
NETCONFA_MC_FORWARDING,
NETCONFA_IFINDEX_ALL,
net->ipv6.devconf_all);
rtnl_unlock();
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 38 | 32.20% | 1 | 10.00% |
| Eric Dumazet | 19 | 16.10% | 2 | 20.00% |
| Yuval Mintz | 16 | 13.56% | 2 | 20.00% |
| Nicolas Dichtel | 15 | 12.71% | 1 | 10.00% |
| Benjamin Thery | 12 | 10.17% | 1 | 10.00% |
| Thomas Goff | 10 | 8.47% | 1 | 10.00% |
| Patrick McHardy | 6 | 5.08% | 1 | 10.00% |
| David Ahern | 2 | 1.69% | 1 | 10.00% |
| Total | 118 | 100.00% | 10 | 100.00% |
int ip6mr_sk_done(struct sock *sk)
{
int err = -EACCES;
struct net *net = sock_net(sk);
struct mr_table *mrt;
if (sk->sk_type != SOCK_RAW ||
inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
return err;
rtnl_lock();
ip6mr_for_each_table(mrt, net) {
if (sk == rtnl_dereference(mrt->mroute_sk)) {
write_lock_bh(&mrt_lock);
RCU_INIT_POINTER(mrt->mroute_sk, NULL);
/* Note that mroute_sk had SOCK_RCU_FREE set,
* so the RCU grace period before sk freeing
* is guaranteed by sk_destruct()
*/
net->ipv6.devconf_all->mc_forwarding--;
write_unlock_bh(&mrt_lock);
inet6_netconf_notify_devconf(net, RTM_NEWNETCONF,
NETCONFA_MC_FORWARDING,
NETCONFA_IFINDEX_ALL,
net->ipv6.devconf_all);
mroute_clean_tables(mrt, false);
err = 0;
break;
}
}
rtnl_unlock();
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 44 | 31.21% | 1 | 7.69% |
| Francesco Ruggeri | 20 | 14.18% | 1 | 7.69% |
| Patrick McHardy | 20 | 14.18% | 2 | 15.38% |
| Nicolas Dichtel | 15 | 10.64% | 1 | 7.69% |
| Benjamin Thery | 12 | 8.51% | 1 | 7.69% |
| Yuval Mintz | 10 | 7.09% | 2 | 15.38% |
| Thomas Goff | 9 | 6.38% | 1 | 7.69% |
| Eric Dumazet | 7 | 4.96% | 2 | 15.38% |
| David Ahern | 2 | 1.42% | 1 | 7.69% |
| Nikolay Aleksandrov | 2 | 1.42% | 1 | 7.69% |
| Total | 141 | 100.00% | 13 | 100.00% |
bool mroute6_is_socket(struct net *net, struct sk_buff *skb)
{
struct mr_table *mrt;
struct flowi6 fl6 = {
.flowi6_iif = skb->skb_iif ? : LOOPBACK_IFINDEX,
.flowi6_oif = skb->dev->ifindex,
.flowi6_mark = skb->mark,
};
if (ip6mr_fib_lookup(net, &fl6, &mrt) < 0)
return NULL;
return rcu_access_pointer(mrt->mroute_sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 62 | 79.49% | 2 | 33.33% |
| Yuval Mintz | 7 | 8.97% | 2 | 33.33% |
| David S. Miller | 6 | 7.69% | 1 | 16.67% |
| Julian Anastasov | 3 | 3.85% | 1 | 16.67% |
| Total | 78 | 100.00% | 6 | 100.00% |
EXPORT_SYMBOL(mroute6_is_socket);
/*
* Socket options and virtual interface manipulation. The whole
* virtual interface system is a complete heap, but unfortunately
* that's how BSD mrouted happens to think. Maybe one day with a proper
* MOSPF/PIM router set up we can clean this up.
*/
int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsigned int optlen)
{
int ret, parent = 0;
struct mif6ctl vif;
struct mf6cctl mfc;
mifi_t mifi;
struct net *net = sock_net(sk);
struct mr_table *mrt;
if (sk->sk_type != SOCK_RAW ||
inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
return -EOPNOTSUPP;
mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
if (optname != MRT6_INIT) {
if (sk != rcu_access_pointer(mrt->mroute_sk) &&
!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EACCES;
}
switch (optname) {
case MRT6_INIT:
if (optlen < sizeof(int))
return -EINVAL;
return ip6mr_sk_init(mrt, sk);
case MRT6_DONE:
return ip6mr_sk_done(sk);
case MRT6_ADD_MIF:
if (optlen < sizeof(vif))
return -EINVAL;
if (copy_from_user(&vif, optval, sizeof(vif)))
return -EFAULT;
if (vif.mif6c_mifi >= MAXMIFS)
return -ENFILE;
rtnl_lock();
ret = mif6_add(net, mrt, &vif,
sk == rtnl_dereference(mrt->mroute_sk));
rtnl_unlock();
return ret;
case MRT6_DEL_MIF:
if (optlen < sizeof(mifi_t))
return -EINVAL;
if (copy_from_user(&mifi, optval, sizeof(mifi_t)))
return -EFAULT;
rtnl_lock();
ret = mif6_delete(mrt, mifi, 0, NULL);
rtnl_unlock();
return ret;
/*
* Manipulate the forwarding caches. These live
* in a sort of kernel/user symbiosis.
*/
case MRT6_ADD_MFC:
case MRT6_DEL_MFC:
parent = -1;
/* fall through */
case MRT6_ADD_MFC_PROXY:
case MRT6_DEL_MFC_PROXY:
if (optlen < sizeof(mfc))
return -EINVAL;
if (copy_from_user(&mfc, optval, sizeof(mfc)))
return -EFAULT;
if (parent == 0)
parent = mfc.mf6cc_parent;
rtnl_lock();
if (optname == MRT6_DEL_MFC || optname == MRT6_DEL_MFC_PROXY)
ret = ip6mr_mfc_delete(mrt, &mfc, parent);
else
ret = ip6mr_mfc_add(net, mrt, &mfc,
sk ==
rtnl_dereference(mrt->mroute_sk),
parent);
rtnl_unlock();
return ret;
/*
* Control PIM assert (to activate pim will activate assert)
*/
case MRT6_ASSERT:
{
int v;
if (optlen != sizeof(v))
return -EINVAL;
if (get_user(v, (int __user *)optval))
return -EFAULT;
mrt->mroute_do_assert = v;
return 0;
}
#ifdef CONFIG_IPV6_PIMSM_V2
case MRT6_PIM:
{
int v;
if (optlen != sizeof(v))
return -EINVAL;
if (get_user(v, (int __user *)optval))
return -EFAULT;
v = !!v;
rtnl_lock();
ret = 0;
if (v != mrt->mroute_do_pim) {
mrt->mroute_do_pim = v;
mrt->mroute_do_assert = v;
}
rtnl_unlock();
return ret;
}
#endif
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
case MRT6_TABLE:
{
u32 v;
if (optlen != sizeof(u32))
return -EINVAL;
if (get_user(v, (u32 __user *)optval))
return -EFAULT;
/* "pim6reg%u" should not exceed 16 bytes (IFNAMSIZ) */
if (v != RT_TABLE_DEFAULT && v >= 100000000)
return -EINVAL;
if (sk == rcu_access_pointer(mrt->mroute_sk))
return -EBUSY;
rtnl_lock();
ret = 0;
mrt = ip6mr_new_table(net, v);
if (IS_ERR(mrt))
ret = PTR_ERR(mrt);
else
raw6_sk(sk)->ip6mr_table = v;
rtnl_unlock();
return ret;
}
#endif
/*
* Spurious command, or MRT6_VERSION which you cannot
* set.
*/
default:
return -ENOPROTOOPT;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 390 | 56.85% | 2 | 9.52% |
| Patrick McHardy | 131 | 19.10% | 2 | 9.52% |
| Nicolas Dichtel | 35 | 5.10% | 1 | 4.76% |
| Joe Perches | 26 | 3.79% | 1 | 4.76% |
| Benjamin Thery | 23 | 3.35% | 1 | 4.76% |
| Xin Long | 21 | 3.06% | 1 | 4.76% |
| Yuval Mintz | 17 | 2.48% | 2 | 9.52% |
| Dan Carpenter | 15 | 2.19% | 1 | 4.76% |
| Sabrina Dubroca | 14 | 2.04% | 2 | 9.52% |
| Eric W. Biedermann | 5 | 0.73% | 1 | 4.76% |
| Rami Rosen | 2 | 0.29% | 2 | 9.52% |
| Nikolay Aleksandrov | 2 | 0.29% | 1 | 4.76% |
| Eric Dumazet | 2 | 0.29% | 1 | 4.76% |
| Gustavo A. R. Silva | 1 | 0.15% | 1 | 4.76% |
| Ian Morris | 1 | 0.15% | 1 | 4.76% |
| David S. Miller | 1 | 0.15% | 1 | 4.76% |
| Total | 686 | 100.00% | 21 | 100.00% |
/*
* Getsock opt support for the multicast routing system.
*/
int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval,
int __user *optlen)
{
int olr;
int val;
struct net *net = sock_net(sk);
struct mr_table *mrt;
if (sk->sk_type != SOCK_RAW ||
inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
return -EOPNOTSUPP;
mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
switch (optname) {
case MRT6_VERSION:
val = 0x0305;
break;
#ifdef CONFIG_IPV6_PIMSM_V2
case MRT6_PIM:
val = mrt->mroute_do_pim;
break;
#endif
case MRT6_ASSERT:
val = mrt->mroute_do_assert;
break;
default:
return -ENOPROTOOPT;
}
if (get_user(olr, optlen))
return -EFAULT;
olr = min_t(int, olr, sizeof(int));
if (olr < 0)
return -EINVAL;
if (put_user(olr, optlen))
return -EFAULT;
if (copy_to_user(optval, &val, olr))
return -EFAULT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 138 | 67.65% | 2 | 25.00% |
| Patrick McHardy | 31 | 15.20% | 2 | 25.00% |
| Xin Long | 21 | 10.29% | 1 | 12.50% |
| Benjamin Thery | 12 | 5.88% | 1 | 12.50% |
| Yuval Mintz | 1 | 0.49% | 1 | 12.50% |
| Ian Morris | 1 | 0.49% | 1 | 12.50% |
| Total | 204 | 100.00% | 8 | 100.00% |
/*
* The IP multicast ioctl support routines.
*/
int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
{
struct sioc_sg_req6 sr;
struct sioc_mif_req6 vr;
struct vif_device *vif;
struct mfc6_cache *c;
struct net *net = sock_net(sk);
struct mr_table *mrt;
mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
switch (cmd) {
case SIOCGETMIFCNT_IN6:
if (copy_from_user(&vr, arg, sizeof(vr)))
return -EFAULT;
if (vr.mifi >= mrt->maxvif)
return -EINVAL;
read_lock(&mrt_lock);
vif = &mrt->vif_table[vr.mifi];
if (VIF_EXISTS(mrt, vr.mifi)) {
vr.icount = vif->pkt_in;
vr.ocount = vif->pkt_out;
vr.ibytes = vif->bytes_in;
vr.obytes = vif->bytes_out;
read_unlock(&mrt_lock);
if (copy_to_user(arg, &vr, sizeof(vr)))
return -EFAULT;
return 0;
}
read_unlock(&mrt_lock);
return -EADDRNOTAVAIL;
case SIOCGETSGCNT_IN6:
if (copy_from_user(&sr, arg, sizeof(sr)))
return -EFAULT;
rcu_read_lock();
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->_c.mfc_un.res.pkt;
sr.bytecnt = c->_c.mfc_un.res.bytes;
sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
return -EFAULT;
return 0;
}
rcu_read_unlock();
return -EADDRNOTAVAIL;
default:
return -ENOIOCTLCMD;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 287 | 81.77% | 1 | 10.00% |
| Patrick McHardy | 33 | 9.40% | 2 | 20.00% |
| Yuval Mintz | 16 | 4.56% | 4 | 40.00% |
| Benjamin Thery | 14 | 3.99% | 2 | 20.00% |
| Ian Morris | 1 | 0.28% | 1 | 10.00% |
| Total | 351 | 100.00% | 10 | 100.00% |
#ifdef CONFIG_COMPAT
struct compat_sioc_sg_req6 {
struct sockaddr_in6 src;
struct sockaddr_in6 grp;
compat_ulong_t pktcnt;
compat_ulong_t bytecnt;
compat_ulong_t wrong_if;
};
struct compat_sioc_mif_req6 {
mifi_t mifi;
compat_ulong_t icount;
compat_ulong_t ocount;
compat_ulong_t ibytes;
compat_ulong_t obytes;
};
int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg)
{
struct compat_sioc_sg_req6 sr;
struct compat_sioc_mif_req6 vr;
struct vif_device *vif;
struct mfc6_cache *c;
struct net *net = sock_net(sk);
struct mr_table *mrt;
mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
switch (cmd) {
case SIOCGETMIFCNT_IN6:
if (copy_from_user(&vr, arg, sizeof(vr)))
return -EFAULT;
if (vr.mifi >= mrt->maxvif)
return -EINVAL;
read_lock(&mrt_lock);
vif = &mrt->vif_table[vr.mifi];
if (VIF_EXISTS(mrt, vr.mifi)) {
vr.icount = vif->pkt_in;
vr.ocount = vif->pkt_out;
vr.ibytes = vif->bytes_in;
vr.obytes = vif->bytes_out;
read_unlock(&mrt_lock);
if (copy_to_user(arg, &vr, sizeof(vr)))
return -EFAULT;
return 0;
}
read_unlock(&mrt_lock);
return -EADDRNOTAVAIL;
case SIOCGETSGCNT_IN6:
if (copy_from_user(&sr, arg, sizeof(sr)))
return -EFAULT;
rcu_read_lock();
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->_c.mfc_un.res.pkt;
sr.bytecnt = c->_c.mfc_un.res.bytes;
sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
return -EFAULT;
return 0;
}
rcu_read_unlock();
return -EADDRNOTAVAIL;
default:
return -ENOIOCTLCMD;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 335 | 95.17% | 1 | 16.67% |
| Yuval Mintz | 16 | 4.55% | 4 | 66.67% |
| Ian Morris | 1 | 0.28% | 1 | 16.67% |
| Total | 352 | 100.00% | 6 | 100.00% |
#endif
static inline int ip6mr_forward2_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{
__IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTFORWDATAGRAMS);
__IP6_ADD_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTOCTETS, skb->len);
return dst_output(net, sk, skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 17 | 25.76% | 1 | 9.09% |
| Vincent Bernat | 17 | 25.76% | 1 | 9.09% |
| Eric W. Biedermann | 11 | 16.67% | 4 | 36.36% |
| Rami Rosen | 8 | 12.12% | 1 | 9.09% |
| David S. Miller | 7 | 10.61% | 1 | 9.09% |
| Eric Dumazet | 5 | 7.58% | 2 | 18.18% |
| Denis V. Lunev | 1 | 1.52% | 1 | 9.09% |
| Total | 66 | 100.00% | 11 | 100.00% |
/*
* Processing handlers for ip6mr_forward
*/
static int ip6mr_forward2(struct net *net, struct mr_table *mrt,
struct sk_buff *skb, struct mfc6_cache *c, int vifi)
{
struct ipv6hdr *ipv6h;
struct vif_device *vif = &mrt->vif_table[vifi];
struct net_device *dev;
struct dst_entry *dst;
struct flowi6 fl6;
if (!vif->dev)
goto out_free;
#ifdef CONFIG_IPV6_PIMSM_V2
if (vif->flags & MIFF_REGISTER) {
vif->pkt_out++;
vif->bytes_out += skb->len;
vif->dev->stats.tx_bytes += skb->len;
vif->dev->stats.tx_packets++;
ip6mr_cache_report(mrt, skb, vifi, MRT6MSG_WHOLEPKT);
goto out_free;
}
#endif
ipv6h = ipv6_hdr(skb);
fl6 = (struct flowi6) {
.flowi6_oif = vif->link,
.daddr = ipv6h->daddr,
};
dst = ip6_route_output(net, NULL, &fl6);
if (dst->error) {
dst_release(dst);
goto out_free;
}
skb_dst_drop(skb);
skb_dst_set(skb, dst);
/*
* RFC1584 teaches, that DVMRP/PIM router must deliver packets locally
* not only before forwarding, but after forwarding on all output
* interfaces. It is clear, if mrouter runs a multicasting
* program, it should receive packets not depending to what interface
* program is joined.
* If we will not make it, the program will have to join on all
* interfaces. On the other hand, multihoming host (or router, but
* not mrouter) cannot join to more than one interface - it will
* result in receiving multiple packets.
*/
dev = vif->dev;
skb->dev = dev;
vif->pkt_out++;
vif->bytes_out += skb->len;
/* We are about to write */
/* XXX: extension headers? */
if (skb_cow(skb, sizeof(*ipv6h) + LL_RESERVED_SPACE(dev)))
goto out_free;
ipv6h = ipv6_hdr(skb);
ipv6h->hop_limit--;
IP6CB(skb)->flags |= IP6SKB_FORWARDED;
return NF_HOOK(NFPROTO_IPV6, NF_INET_FORWARD,
net, NULL, skb, skb->dev, dev,
ip6mr_forward2_finish);
out_free:
kfree_skb(skb);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 253 | 82.95% | 2 | 11.76% |
| Patrick McHardy | 11 | 3.61% | 2 | 11.76% |
| David S. Miller | 9 | 2.95% | 2 | 11.76% |
| Li RongQing | 9 | 2.95% | 1 | 5.88% |
| Eric Dumazet | 5 | 1.64% | 1 | 5.88% |
| Pavel Emelyanov | 4 | 1.31% | 1 | 5.88% |
| Benjamin Thery | 3 | 0.98% | 1 | 5.88% |
| Ilpo Järvinen | 3 | 0.98% | 1 | 5.88% |
| Yuval Mintz | 3 | 0.98% | 2 | 11.76% |
| Eric W. Biedermann | 2 | 0.66% | 1 | 5.88% |
| Changli Gao | 1 | 0.33% | 1 | 5.88% |
| Ian Morris | 1 | 0.33% | 1 | 5.88% |
| Jan Engelhardt | 1 | 0.33% | 1 | 5.88% |
| Total | 305 | 100.00% | 17 | 100.00% |
static int ip6mr_find_vif(struct mr_table *mrt, struct net_device *dev)
{
int ct;
for (ct = mrt->maxvif - 1; ct >= 0; ct--) {
if (mrt->vif_table[ct].dev == dev)
break;
}
return ct;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 45 | 81.82% | 1 | 25.00% |
| Patrick McHardy | 6 | 10.91% | 1 | 25.00% |
| Yuval Mintz | 2 | 3.64% | 1 | 25.00% |
| Benjamin Thery | 2 | 3.64% | 1 | 25.00% |
| Total | 55 | 100.00% | 4 | 100.00% |
static void ip6_mr_forward(struct net *net, struct mr_table *mrt,
struct sk_buff *skb, struct mfc6_cache *c)
{
int psend = -1;
int vif, ct;
int true_vifi = ip6mr_find_vif(mrt, skb->dev);
vif = c->_c.mfc_parent;
c->_c.mfc_un.res.pkt++;
c->_c.mfc_un.res.bytes += skb->len;
c->_c.mfc_un.res.lastuse = jiffies;
if (ipv6_addr_any(&c->mf6c_origin) && true_vifi >= 0) {
struct mfc6_cache *cache_proxy;
/* For an (*,G) entry, we only check that the incoming
* interface is part of the static tree.
*/
rcu_read_lock();
cache_proxy = mr_mfc_find_any_parent(mrt, vif);
if (cache_proxy &&
cache_proxy->_c.mfc_un.res.ttls[true_vifi] < 255) {
rcu_read_unlock();
goto forward;
}
rcu_read_unlock();
}
/*
* Wrong interface: drop packet and (maybe) send PIM assert.
*/
if (mrt->vif_table[vif].dev != skb->dev) {
c->_c.mfc_un.res.wrong_if++;
if (true_vifi >= 0 && mrt->mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
so that we cannot check that packet arrived on an oif.
It is bad, but otherwise we would need to move pretty
large chunk of pimd to kernel. Ough... --ANK
*/
(mrt->mroute_do_pim ||
c->_c.mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
c->_c.mfc_un.res.last_assert +
MFC_ASSERT_THRESH)) {
c->_c.mfc_un.res.last_assert = jiffies;
ip6mr_cache_report(mrt, skb, true_vifi, MRT6MSG_WRONGMIF);
}
goto dont_forward;
}
forward:
mrt->vif_table[vif].pkt_in++;
mrt->vif_table[vif].bytes_in += skb->len;
/*
* Forward the frame
*/
if (ipv6_addr_any(&c->mf6c_origin) &&
ipv6_addr_any(&c->mf6c_mcastgrp)) {
if (true_vifi >= 0 &&
true_vifi != c->_c.mfc_parent &&
ipv6_hdr(skb)->hop_limit >
c->_c.mfc_un.res.ttls[c->_c.mfc_parent]) {
/* It's an (*,*) entry and the packet is not coming from
* the upstream: forward the packet to the upstream
* only.
*/
psend = c->_c.mfc_parent;
goto last_forward;
}
goto dont_forward;
}
for (ct = c->_c.mfc_un.res.maxvif - 1;
ct >= c->_c.mfc_un.res.minvif; ct--) {
/* For (*,G) entry, don't forward to the incoming interface */
if ((!ipv6_addr_any(&c->mf6c_origin) || ct != true_vifi) &&
ipv6_hdr(skb)->hop_limit > c->_c.mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
ip6mr_forward2(net, mrt, skb2,
c, psend);
}
psend = ct;
}
}
last_forward:
if (psend != -1) {
ip6mr_forward2(net, mrt, skb, c, psend);
return;
}
dont_forward:
kfree_skb(skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 260 | 50.78% | 2 | 15.38% |
| Nicolas Dichtel | 137 | 26.76% | 1 | 7.69% |
| Yuval Mintz | 74 | 14.45% | 4 | 30.77% |
| Patrick McHardy | 23 | 4.49% | 2 | 15.38% |
| Nikolay Aleksandrov | 9 | 1.76% | 1 | 7.69% |
| Benjamin Thery | 6 | 1.17% | 1 | 7.69% |
| Rami Rosen | 2 | 0.39% | 1 | 7.69% |
| Fabian Frederick | 1 | 0.20% | 1 | 7.69% |
| Total | 512 | 100.00% | 13 | 100.00% |
/*
* Multicast packets for forwarding arrive here
*/
int ip6_mr_input(struct sk_buff *skb)
{
struct mfc6_cache *cache;
struct net *net = dev_net(skb->dev);
struct mr_table *mrt;
struct flowi6 fl6 = {
.flowi6_iif = skb->dev->ifindex,
.flowi6_mark = skb->mark,
};
int err;
err = ip6mr_fib_lookup(net, &fl6, &mrt);
if (err < 0) {
kfree_skb(skb);
return err;
}
read_lock(&mrt_lock);
cache = ip6mr_cache_find(mrt,
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr);
if (!cache) {
int vif = ip6mr_find_vif(mrt, skb->dev);
if (vif >= 0)
cache = ip6mr_cache_find_any(mrt,
&ipv6_hdr(skb)->daddr,
vif);
}
/*
* No usable cache entry
*/
if (!cache) {
int vif;
vif = ip6mr_find_vif(mrt, skb->dev);
if (vif >= 0) {
int err = ip6mr_cache_unresolved(mrt, vif, skb);
read_unlock(&mrt_lock);
return err;
}
read_unlock(&mrt_lock);
kfree_skb(skb);
return -ENODEV;
}
ip6_mr_forward(net, mrt, skb, cache);
read_unlock(&mrt_lock);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 119 | 48.97% | 1 | 10.00% |
| Patrick McHardy | 54 | 22.22% | 3 | 30.00% |
| Nicolas Dichtel | 41 | 16.87% | 1 | 10.00% |
| Benjamin Thery | 14 | 5.76% | 1 | 10.00% |
| Ben Greear | 7 | 2.88% | 1 | 10.00% |
| David S. Miller | 5 | 2.06% | 1 | 10.00% |
| Ian Morris | 2 | 0.82% | 1 | 10.00% |
| Yuval Mintz | 1 | 0.41% | 1 | 10.00% |
| Total | 243 | 100.00% | 10 | 100.00% |
int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm,
u32 portid)
{
int err;
struct mr_table *mrt;
struct mfc6_cache *cache;
struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
read_lock(&mrt_lock);
cache = ip6mr_cache_find(mrt, &rt->rt6i_src.addr, &rt->rt6i_dst.addr);
if (!cache && skb->dev) {
int vif = ip6mr_find_vif(mrt, skb->dev);
if (vif >= 0)
cache = ip6mr_cache_find_any(mrt, &rt->rt6i_dst.addr,
vif);
}
if (!cache) {
struct sk_buff *skb2;
struct ipv6hdr *iph;
struct net_device *dev;
int vif;
dev = skb->dev;
if (!dev || (vif = ip6mr_find_vif(mrt, dev)) < 0) {
read_unlock(&mrt_lock);
return -ENODEV;
}
/* really correct? */
skb2 = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC);
if (!skb2) {
read_unlock(&mrt_lock);
return -ENOMEM;
}
NETLINK_CB(skb2).portid = portid;
skb_reset_transport_header(skb2);
skb_put(skb2, sizeof(struct ipv6hdr));
skb_reset_network_header(skb2);
iph = ipv6_hdr(skb2);
iph->version = 0;
iph->priority = 0;
iph->flow_lbl[0] = 0;
iph->flow_lbl[1] = 0;
iph->flow_lbl[2] = 0;
iph->payload_len = 0;
iph->nexthdr = IPPROTO_NONE;
iph->hop_limit = 0;
iph->saddr = rt->rt6i_src.addr;
iph->daddr = rt->rt6i_dst.addr;
err = ip6mr_cache_unresolved(mrt, vif, skb2);
read_unlock(&mrt_lock);
return err;
}
err = mr_fill_mroute(mrt, skb, &cache->_c, rtm);
read_unlock(&mrt_lock);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 245 | 62.50% | 1 | 7.14% |
| Yuval Mintz | 67 | 17.09% | 2 | 14.29% |
| Nicolas Dichtel | 56 | 14.29% | 3 | 21.43% |
| Nikolay Aleksandrov | 11 | 2.81% | 3 | 21.43% |
| Patrick McHardy | 9 | 2.30% | 2 | 14.29% |
| Alexey Dobriyan | 2 | 0.51% | 1 | 7.14% |
| Benjamin Thery | 1 | 0.26% | 1 | 7.14% |
| Ian Morris | 1 | 0.26% | 1 | 7.14% |
| Total | 392 | 100.00% | 14 | 100.00% |
static int ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
u32 portid, u32 seq, struct mfc6_cache *c, int cmd,
int flags)
{
struct nlmsghdr *nlh;
struct rtmsg *rtm;
int err;
nlh = nlmsg_put(skb, portid, seq, cmd, sizeof(*rtm), flags);
if (!nlh)
return -EMSGSIZE;
rtm = nlmsg_data(nlh);
rtm->rtm_family = RTNL_FAMILY_IP6MR;
rtm->rtm_dst_len = 128;
rtm->rtm_src_len = 128;
rtm->rtm_tos = 0;
rtm->rtm_table = mrt->id;
if (nla_put_u32(skb, RTA_TABLE, mrt->id))
goto nla_put_failure;
rtm->rtm_type = RTN_MULTICAST;
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
if (c->_c.mfc_flags & MFC_STATIC)
rtm->rtm_protocol = RTPROT_STATIC;
else
rtm->rtm_protocol = RTPROT_MROUTED;
rtm->rtm_flags = 0;
if (nla_put_in6_addr(skb, RTA_SRC, &c->mf6c_origin) ||
nla_put_in6_addr(skb, RTA_DST, &c->mf6c_mcastgrp))
goto nla_put_failure;
err = mr_fill_mroute(mrt, skb, &c->_c, rtm);
/* do not break the dump if cache is unresolved */
if (err < 0 && err != -ENOENT)
goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;
nla_put_failure:
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 165 | 64.71% | 1 | 7.14% |
| Nicolas Dichtel | 46 | 18.04% | 5 | 35.71% |
| Yuval Mintz | 23 | 9.02% | 3 | 21.43% |
| David S. Miller | 14 | 5.49% | 1 | 7.14% |
| Eric W. Biedermann | 2 | 0.78% | 1 | 7.14% |
| Johannes Berg | 2 | 0.78% | 1 | 7.14% |
| Jiri Benc | 2 | 0.78% | 1 | 7.14% |
| Ian Morris | 1 | 0.39% | 1 | 7.14% |
| Total | 255 | 100.00% | 14 | 100.00% |
static int _ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
u32 portid, u32 seq, struct mr_mfc *c,
int cmd, int flags)
{
return ip6mr_fill_mroute(mrt, skb, portid, seq, (struct mfc6_cache *)c,
cmd, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yuval Mintz | 50 | 89.29% | 1 | 50.00% |
| Patrick McHardy | 6 | 10.71% | 1 | 50.00% |
| Total | 56 | 100.00% | 2 | 100.00% |
static int mr6_msgsize(bool unresolved, int maxvif)
{
size_t len =
NLMSG_ALIGN(sizeof(struct rtmsg))
+ nla_total_size(4) /* RTA_TABLE */
+ nla_total_size(sizeof(struct in6_addr)) /* RTA_SRC */
+ nla_total_size(sizeof(struct in6_addr)) /* RTA_DST */
;
if (!unresolved)
len = len
+ nla_total_size(4) /* RTA_IIF */
+ nla_total_size(0) /* RTA_MULTIPATH */
+ maxvif * NLA_ALIGN(sizeof(struct rtnexthop))
/* RTA_MFC_STATS */
+ nla_total_size_64bit(sizeof(struct rta_mfc_stats))
;
return len;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 95 | 100.00% | 2 | 100.00% |
| Total | 95 | 100.00% | 2 | 100.00% |
static void mr6_netlink_event(struct mr_table *mrt, struct mfc6_cache *mfc,
int cmd)
{
struct net *net = read_pnet(&mrt->net);
struct sk_buff *skb;
int err = -ENOBUFS;
skb = nlmsg_new(mr6_msgsize(mfc->_c.mfc_parent >= MAXMIFS, mrt->maxvif),
GFP_ATOMIC);
if (!skb)
goto errout;
err = ip6mr_fill_mroute(mrt, skb, 0, 0, mfc, cmd, 0);
if (err < 0)
goto errout;
rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE, NULL, GFP_ATOMIC);
return;
errout:
kfree_skb(skb);
if (err < 0)
rtnl_set_sk_err(net, RTNLGRP_IPV6_MROUTE, err);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicolas Dichtel | 134 | 96.40% | 2 | 40.00% |
| Yuval Mintz | 4 | 2.88% | 2 | 40.00% |
| Ian Morris | 1 | 0.72% | 1 | 20.00% |
| Total | 139 | 100.00% | 5 | 100.00% |
static size_t mrt6msg_netlink_msgsize(size_t payloadlen)
{
size_t len =
NLMSG_ALIGN(sizeof(struct rtgenmsg))
+ nla_total_size(1) /* IP6MRA_CREPORT_MSGTYPE */
+ nla_total_size(4) /* IP6MRA_CREPORT_MIF_ID */
/* IP6MRA_CREPORT_SRC_ADDR */
+ nla_total_size(sizeof(struct in6_addr))
/* IP6MRA_CREPORT_DST_ADDR */
+ nla_total_size(sizeof(struct in6_addr))
/* IP6MRA_CREPORT_PKT */
+ nla_total_size(payloadlen)
;
return len;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Julien Gomes | 62 | 100.00% | 1 | 100.00% |
| Total | 62 | 100.00% | 1 | 100.00% |
static void mrt6msg_netlink_event(struct mr_table *mrt, struct sk_buff *pkt)
{
struct net *net = read_pnet(&mrt->net);
struct nlmsghdr *nlh;
struct rtgenmsg *rtgenm;
struct mrt6msg *msg;
struct sk_buff *skb;
struct nlattr *nla;
int payloadlen;
payloadlen = pkt->len - sizeof(struct mrt6msg);
msg = (struct mrt6msg *)skb_transport_header(pkt);
skb = nlmsg_new(mrt6msg_netlink_msgsize(payloadlen), GFP_ATOMIC);
if (!skb)
goto errout;
nlh = nlmsg_put(skb, 0, 0, RTM_NEWCACHEREPORT,
sizeof(struct rtgenmsg), 0);
if (!nlh)
goto errout;
rtgenm = nlmsg_data(nlh);
rtgenm->rtgen_family = RTNL_FAMILY_IP6MR;
if (nla_put_u8(skb, IP6MRA_CREPORT_MSGTYPE, msg->im6_msgtype) ||
nla_put_u32(skb, IP6MRA_CREPORT_MIF_ID, msg->im6_mif) ||
nla_put_in6_addr(skb, IP6MRA_CREPORT_SRC_ADDR,
&msg->im6_src) ||
nla_put_in6_addr(skb, IP6MRA_CREPORT_DST_ADDR,
&msg->im6_dst))
goto nla_put_failure;
nla = nla_reserve(skb, IP6MRA_CREPORT_PKT, payloadlen);
if (!nla || skb_copy_bits(pkt, sizeof(struct mrt6msg),
nla_data(nla), payloadlen))
goto nla_put_failure;
nlmsg_end(skb, nlh);
rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE_R, NULL, GFP_ATOMIC);
return;
nla_put_failure:
nlmsg_cancel(skb, nlh);
errout:
kfree_skb(skb);
rtnl_set_sk_err(net, RTNLGRP_IPV6_MROUTE_R, -ENOBUFS);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Julien Gomes | 279 | 99.64% | 1 | 50.00% |
| Yuval Mintz | 1 | 0.36% | 1 | 50.00% |
| Total | 280 | 100.00% | 2 | 100.00% |
static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
{
return mr_rtm_dumproute(skb, cb, ip6mr_mr_table_iter,
_ip6mr_fill_mroute, &mfc_unres_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 17 | 54.84% | 1 | 20.00% |
| Nicolas Dichtel | 10 | 32.26% | 3 | 60.00% |
| Yuval Mintz | 4 | 12.90% | 1 | 20.00% |
| Total | 31 | 100.00% | 5 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hideaki Yoshifuji / 吉藤英明 | 5059 | 43.29% | 3 | 2.08% |
| Patrick McHardy | 1951 | 16.69% | 8 | 5.56% |
| Yuval Mintz | 1710 | 14.63% | 13 | 9.03% |
| Nicolas Dichtel | 801 | 6.85% | 13 | 9.03% |
| Benjamin Thery | 476 | 4.07% | 11 | 7.64% |
| David S. Miller | 448 | 3.83% | 6 | 4.17% |
| Julien Gomes | 363 | 3.11% | 1 | 0.69% |
| Thomas Goff | 159 | 1.36% | 3 | 2.08% |
| Wang Chen | 102 | 0.87% | 3 | 2.08% |
| Eric Dumazet | 78 | 0.67% | 9 | 6.25% |
| Nikolay Aleksandrov | 64 | 0.55% | 7 | 4.86% |
| Sabrina Dubroca | 43 | 0.37% | 2 | 1.39% |
| Xin Long | 42 | 0.36% | 1 | 0.69% |
| Joe Perches | 34 | 0.29% | 4 | 2.78% |
| Hannes Frederic Sowa | 26 | 0.22% | 2 | 1.39% |
| Rami Rosen | 26 | 0.22% | 4 | 2.78% |
| Gao Feng | 23 | 0.20% | 2 | 1.39% |
| Eric W. Biedermann | 22 | 0.19% | 7 | 4.86% |
| Duan Jiong | 20 | 0.17% | 1 | 0.69% |
| Francesco Ruggeri | 20 | 0.17% | 1 | 0.69% |
| Florian Westphal | 20 | 0.17% | 2 | 1.39% |
| Ian Morris | 19 | 0.16% | 1 | 0.69% |
| Stephen Hemminger | 18 | 0.15% | 3 | 2.08% |
| Vincent Bernat | 17 | 0.15% | 1 | 0.69% |
| Kees Cook | 16 | 0.14% | 1 | 0.69% |
| Christoph Hellwig | 16 | 0.14% | 1 | 0.69% |
| Dan Carpenter | 15 | 0.13% | 1 | 0.69% |
| Ben Greear | 14 | 0.12% | 2 | 1.39% |
| Li RongQing | 9 | 0.08% | 1 | 0.69% |
| Pavel Emelyanov | 9 | 0.08% | 1 | 0.69% |
| David Ahern | 8 | 0.07% | 1 | 0.69% |
| Alexey Dobriyan | 7 | 0.06% | 2 | 1.39% |
| Hong Zhi Guo | 5 | 0.04% | 1 | 0.69% |
| Roopa Prabhu | 5 | 0.04% | 1 | 0.69% |
| Américo Wang | 5 | 0.04% | 3 | 2.08% |
| Jiri Pirko | 3 | 0.03% | 1 | 0.69% |
| Cong Wang | 3 | 0.03% | 1 | 0.69% |
| Julian Anastasov | 3 | 0.03% | 1 | 0.69% |
| Dave Jones | 3 | 0.03% | 1 | 0.69% |
| Paul Gortmaker | 3 | 0.03% | 1 | 0.69% |
| Ilpo Järvinen | 3 | 0.03% | 1 | 0.69% |
| Johannes Berg | 2 | 0.02% | 1 | 0.69% |
| Jiri Benc | 2 | 0.02% | 1 | 0.69% |
| Harvey Harrison | 2 | 0.02% | 1 | 0.69% |
| Tom Gundersen | 2 | 0.02% | 1 | 0.69% |
| Andi Kleen | 1 | 0.01% | 1 | 0.69% |
| James Morris | 1 | 0.01% | 1 | 0.69% |
| Linus Torvalds | 1 | 0.01% | 1 | 0.69% |
| Greg Rose | 1 | 0.01% | 1 | 0.69% |
| Jan Engelhardt | 1 | 0.01% | 1 | 0.69% |
| Denis V. Lunev | 1 | 0.01% | 1 | 0.69% |
| Al Viro | 1 | 0.01% | 1 | 0.69% |
| Changli Gao | 1 | 0.01% | 1 | 0.69% |
| Fabian Frederick | 1 | 0.01% | 1 | 0.69% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 0.69% |
| Cesar Eduardo Barros | 1 | 0.01% | 1 | 0.69% |
| Total | 11687 | 100.00% | 144 | 100.00% |
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