Release 4.8 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 <asm/uaccess.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/timer.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/slab.h>
#include <linux/compat.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
#include <net/sock.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 mr6_table {
struct list_head list;
possible_net_t net;
u32 id;
struct sock *mroute6_sk;
struct timer_list ipmr_expire_timer;
struct list_head mfc6_unres_queue;
struct list_head mfc6_cache_array[MFC6_LINES];
struct mif_device vif6_table[MAXMIFS];
int maxvif;
atomic_t cache_resolve_queue_len;
bool mroute_do_assert;
bool mroute_do_pim;
#ifdef CONFIG_IPV6_PIMSM_V2
int mroute_reg_vif_num;
#endif
};
struct ip6mr_rule {
struct fib_rule common;
};
struct ip6mr_result {
struct mr6_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
*/
#define MIF_EXISTS(_mrt, _idx) ((_mrt)->vif6_table[_idx].dev != NULL)
/* 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 mr6_table *ip6mr_new_table(struct net *net, u32 id);
static void ip6mr_free_table(struct mr6_table *mrt);
static void ip6_mr_forward(struct net *net, struct mr6_table *mrt,
struct sk_buff *skb, struct mfc6_cache *cache);
static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt,
mifi_t mifi, int assert);
static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
struct mfc6_cache *c, struct rtmsg *rtm);
static void mr6_netlink_event(struct mr6_table *mrt, struct mfc6_cache *mfc,
int cmd);
static int ip6mr_rtm_dumproute(struct sk_buff *skb,
struct netlink_callback *cb);
static void mroute_clean_tables(struct mr6_table *mrt, bool all);
static void ipmr_expire_process(unsigned long arg);
#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 mr6_table *ip6mr_get_table(struct net *net, u32 id)
{
struct mr6_table *mrt;
ip6mr_for_each_table(mrt, net) {
if (mrt->id == id)
return mrt;
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 43 | 100.00% | 1 | 100.00% |
| Total | 43 | 100.00% | 1 | 100.00% |
static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6,
struct mr6_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 | patrick mchardy | 71 | 82.56% | 1 | 33.33% |
| hannes frederic sowa | hannes frederic sowa | 9 | 10.47% | 1 | 33.33% |
| david s. miller | david s. miller | 6 | 6.98% | 1 | 33.33% |
| Total | 86 | 100.00% | 3 | 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 mr6_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 | patrick mchardy | 102 | 99.03% | 1 | 50.00% |
| ian morris | ian morris | 1 | 0.97% | 1 | 50.00% |
| Total | 103 | 100.00% | 2 | 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 | 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)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 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 | 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 | 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 mr6_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 (!mrt) {
err = -ENOMEM;
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 | patrick mchardy | 130 | 98.48% | 1 | 33.33% |
| ian morris | ian morris | 1 | 0.76% | 1 | 33.33% |
| americo wang | americo wang | 1 | 0.76% | 1 | 33.33% |
| Total | 132 | 100.00% | 3 | 100.00% |
static void __net_exit ip6mr_rules_exit(struct net *net)
{
struct mr6_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 | patrick mchardy | 44 | 73.33% | 1 | 25.00% |
| eric dumazet | eric dumazet | 10 | 16.67% | 1 | 25.00% |
| hannes frederic sowa | hannes frederic sowa | 3 | 5.00% | 1 | 25.00% |
| americo wang | americo wang | 3 | 5.00% | 1 | 25.00% |
| Total | 60 | 100.00% | 4 | 100.00% |
#else
#define ip6mr_for_each_table(mrt, net) \
for (mrt = net->ipv6.mrt6; mrt; mrt = NULL)
static struct mr6_table *ip6mr_get_table(struct net *net, u32 id)
{
return net->ipv6.mrt6;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 23 | 100.00% | 1 | 100.00% |
| Total | 23 | 100.00% | 1 | 100.00% |
static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6,
struct mr6_table **mrt)
{
*mrt = net->ipv6.mrt6;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 32 | 94.12% | 1 | 50.00% |
| david s. miller | david s. miller | 2 | 5.88% | 1 | 50.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
static int __net_init ip6mr_rules_init(struct net *net)
{
net->ipv6.mrt6 = ip6mr_new_table(net, RT6_TABLE_DFLT);
return net->ipv6.mrt6 ? 0 : -ENOMEM;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 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 | patrick mchardy | 21 | 60.00% | 1 | 50.00% |
| hannes frederic sowa | hannes frederic sowa | 14 | 40.00% | 1 | 50.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
#endif
static struct mr6_table *ip6mr_new_table(struct net *net, u32 id)
{
struct mr6_table *mrt;
unsigned int i;
mrt = ip6mr_get_table(net, id);
if (mrt)
return mrt;
mrt = kzalloc(sizeof(*mrt), GFP_KERNEL);
if (!mrt)
return NULL;
mrt->id = id;
write_pnet(&mrt->net, net);
/* Forwarding cache */
for (i = 0; i < MFC6_LINES; i++)
INIT_LIST_HEAD(&mrt->mfc6_cache_array[i]);
INIT_LIST_HEAD(&mrt->mfc6_unres_queue);
setup_timer(&mrt->ipmr_expire_timer, ipmr_expire_process,
(unsigned long)mrt);
#ifdef CONFIG_IPV6_PIMSM_V2
mrt->mroute_reg_vif_num = -1;
#endif
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
list_add_tail_rcu(&mrt->list, &net->ipv6.mr6_tables);
#endif
return mrt;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 161 | 99.38% | 1 | 50.00% |
| ian morris | ian morris | 1 | 0.62% | 1 | 50.00% |
| Total | 162 | 100.00% | 2 | 100.00% |
static void ip6mr_free_table(struct mr6_table *mrt)
{
del_timer_sync(&mrt->ipmr_expire_timer);
mroute_clean_tables(mrt, true);
kfree(mrt);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 28 | 90.32% | 2 | 50.00% |
| nikolay aleksandrov | nikolay aleksandrov | 2 | 6.45% | 1 | 25.00% |
| americo wang | americo wang | 1 | 3.23% | 1 | 25.00% |
| Total | 31 | 100.00% | 4 | 100.00% |
#ifdef CONFIG_PROC_FS
struct ipmr_mfc_iter {
struct seq_net_private p;
struct mr6_table *mrt;
struct list_head *cache;
int ct;
};
static struct mfc6_cache *ipmr_mfc_seq_idx(struct net *net,
struct ipmr_mfc_iter *it, loff_t pos)
{
struct mr6_table *mrt = it->mrt;
struct mfc6_cache *mfc;
read_lock(&mrt_lock);
for (it->ct = 0; it->ct < MFC6_LINES; it->ct++) {
it->cache = &mrt->mfc6_cache_array[it->ct];
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
return mfc;
}
read_unlock(&mrt_lock);
spin_lock_bh(&mfc_unres_lock);
it->cache = &mrt->mfc6_unres_queue;
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
return mfc;
spin_unlock_bh(&mfc_unres_lock);
it->cache = NULL;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 101 | 68.24% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 40 | 27.03% | 4 | 57.14% |
| benjamin thery | benjamin thery | 7 | 4.73% | 2 | 28.57% |
| Total | 148 | 100.00% | 7 | 100.00% |
/*
* The /proc interfaces to multicast routing /proc/ip6_mr_cache /proc/ip6_mr_vif
*/
struct ipmr_vif_iter {
struct seq_net_private p;
struct mr6_table *mrt;
int ct;
};
static struct mif_device *ip6mr_vif_seq_idx(struct net *net,
struct ipmr_vif_iter *iter,
loff_t pos)
{
struct mr6_table *mrt = iter->mrt;
for (iter->ct = 0; iter->ct < mrt->maxvif; ++iter->ct) {
if (!MIF_EXISTS(mrt, iter->ct))
continue;
if (pos-- == 0)
return &mrt->vif6_table[iter->ct];
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 67 | 77.01% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 12 | 13.79% | 2 | 40.00% |
| benjamin thery | benjamin thery | 8 | 9.20% | 2 | 40.00% |
| Total | 87 | 100.00% | 5 | 100.00% |
static void *ip6mr_vif_seq_start(struct seq_file *seq, loff_t *pos)
__acquires
(mrt_lock)
{
struct ipmr_vif_iter *iter = seq->private;
struct net *net = seq_file_net(seq);
struct mr6_table *mrt;
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT);
if (!mrt)
return ERR_PTR(-ENOENT);
iter->mrt = mrt;
read_lock(&mrt_lock);
return *pos ? ip6mr_vif_seq_idx(net, seq->private, *pos - 1)
: SEQ_START_TOKEN;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 44 | 45.36% | 1 | 25.00% |
| patrick mchardy | patrick mchardy | 40 | 41.24% | 1 | 25.00% |
| benjamin thery | benjamin thery | 12 | 12.37% | 1 | 25.00% |
| ian morris | ian morris | 1 | 1.03% | 1 | 25.00% |
| Total | 97 | 100.00% | 4 | 100.00% |
static void *ip6mr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct ipmr_vif_iter *iter = seq->private;
struct net *net = seq_file_net(seq);
struct mr6_table *mrt = iter->mrt;
++*pos;
if (v == SEQ_START_TOKEN)
return ip6mr_vif_seq_idx(net, iter, 0);
while (++iter->ct < mrt->maxvif) {
if (!MIF_EXISTS(mrt, iter->ct))
continue;
return &mrt->vif6_table[iter->ct];
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 81 | 75.00% | 1 | 20.00% |
| benjamin thery | benjamin thery | 15 | 13.89% | 2 | 40.00% |
| patrick mchardy | patrick mchardy | 12 | 11.11% | 2 | 40.00% |
| Total | 108 | 100.00% | 5 | 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 | hideaki yoshifuji | 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 ipmr_vif_iter *iter = seq->private;
struct mr6_table *mrt = iter->mrt;
if (v == SEQ_START_TOKEN) {
seq_puts(seq,
"Interface BytesIn PktsIn BytesOut PktsOut Flags\n");
} else {
const struct mif_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->vif6_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 | hideaki yoshifuji | 93 | 81.58% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 14 | 12.28% | 2 | 40.00% |
| benjamin thery | benjamin thery | 6 | 5.26% | 1 | 20.00% |
| al viro | al viro | 1 | 0.88% | 1 | 20.00% |
| Total | 114 | 100.00% | 5 | 100.00% |
static const struct seq_operations ip6mr_vif_seq_ops = {
.start = ip6mr_vif_seq_start,
.next = ip6mr_vif_seq_next,
.stop = ip6mr_vif_seq_stop,
.show = ip6mr_vif_seq_show,
};
static int ip6mr_vif_open(struct inode *inode, struct file *file)
{
return seq_open_net(inode, file, &ip6mr_vif_seq_ops,
sizeof(struct ipmr_vif_iter));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 30 | 90.91% | 1 | 50.00% |
| benjamin thery | benjamin thery | 3 | 9.09% | 1 | 50.00% |
| Total | 33 | 100.00% | 2 | 100.00% |
static const struct file_operations ip6mr_vif_fops = {
.owner = THIS_MODULE,
.open = ip6mr_vif_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net,
};
static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos)
{
struct ipmr_mfc_iter *it = seq->private;
struct net *net = seq_file_net(seq);
struct mr6_table *mrt;
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT);
if (!mrt)
return ERR_PTR(-ENOENT);
it->mrt = mrt;
return *pos ? ipmr_mfc_seq_idx(net, seq->private, *pos - 1)
: SEQ_START_TOKEN;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 40 | 45.98% | 1 | 25.00% |
| hideaki yoshifuji | hideaki yoshifuji | 34 | 39.08% | 1 | 25.00% |
| benjamin thery | benjamin thery | 12 | 13.79% | 1 | 25.00% |
| ian morris | ian morris | 1 | 1.15% | 1 | 25.00% |
| Total | 87 | 100.00% | 4 | 100.00% |
static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct mfc6_cache *mfc = v;
struct ipmr_mfc_iter *it = seq->private;
struct net *net = seq_file_net(seq);
struct mr6_table *mrt = it->mrt;
++*pos;
if (v == SEQ_START_TOKEN)
return ipmr_mfc_seq_idx(net, seq->private, 0);
if (mfc->list.next != it->cache)
return list_entry(mfc->list.next, struct mfc6_cache, list);
if (it->cache == &mrt->mfc6_unres_queue)
goto end_of_list;
BUG_ON(it->cache != &mrt->mfc6_cache_array[it->ct]);
while (++it->ct < MFC6_LINES) {
it->cache = &mrt->mfc6_cache_array[it->ct];
if (list_empty(it->cache))
continue;
return list_first_entry(it->cache, struct mfc6_cache, list);
}
/* exhausted cache_array, show unresolved */
read_unlock(&mrt_lock);
it->cache = &mrt->mfc6_unres_queue;
it->ct = 0;
spin_lock_bh(&mfc_unres_lock);
if (!list_empty(it->cache))
return list_first_entry(it->cache, struct mfc6_cache, list);
end_of_list:
spin_unlock_bh(&mfc_unres_lock);
it->cache = NULL;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 157 | 62.55% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 79 | 31.47% | 4 | 57.14% |
| benjamin thery | benjamin thery | 15 | 5.98% | 2 | 28.57% |
| Total | 251 | 100.00% | 7 | 100.00% |
static void ipmr_mfc_seq_stop(struct seq_file *seq, void *v)
{
struct ipmr_mfc_iter *it = seq->private;
struct mr6_table *mrt = it->mrt;
if (it->cache == &mrt->mfc6_unres_queue)
spin_unlock_bh(&mfc_unres_lock);
else if (it->cache == &mrt->mfc6_cache_array[it->ct])
read_unlock(&mrt_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 53 | 72.60% | 1 | 16.67% |
| patrick mchardy | patrick mchardy | 12 | 16.44% | 3 | 50.00% |
| richard laing | richard laing | 6 | 8.22% | 1 | 16.67% |
| benjamin thery | benjamin thery | 2 | 2.74% | 1 | 16.67% |
| Total | 73 | 100.00% | 6 | 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 ipmr_mfc_iter *it = seq->private;
struct mr6_table *mrt = it->mrt;
seq_printf(seq, "%pI6 %pI6 %-3hd",
&mfc->mf6c_mcastgrp, &mfc->mf6c_origin,
mfc->mf6c_parent);
if (it->cache != &mrt->mfc6_unres_queue) {
seq_printf(seq, " %8lu %8lu %8lu",
mfc->mfc_un.res.pkt,
mfc->mfc_un.res.bytes,
mfc->mfc_un.res.wrong_if);
for (n = mfc->mfc_un.res.minvif;
n < mfc->mfc_un.res.maxvif; n++) {
if (MIF_EXISTS(mrt, n) &&
mfc->mfc_un.res.ttls[n] < 255)
seq_printf(seq,
" %2d:%-3d",
n, mfc->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 | hideaki yoshifuji | 176 | 77.88% | 1 | 12.50% |
| benjamin thery | benjamin thery | 35 | 15.49% | 3 | 37.50% |
| patrick mchardy | patrick mchardy | 13 | 5.75% | 3 | 37.50% |
| harvey harrison | harvey harrison | 2 | 0.88% | 1 | 12.50% |
| Total | 226 | 100.00% | 8 | 100.00% |
static const struct seq_operations ipmr_mfc_seq_ops = {
.start = ipmr_mfc_seq_start,
.next = ipmr_mfc_seq_next,
.stop = ipmr_mfc_seq_stop,
.show = ipmr_mfc_seq_show,
};
static int ipmr_mfc_open(struct inode *inode, struct file *file)
{
return seq_open_net(inode, file, &ipmr_mfc_seq_ops,
sizeof(struct ipmr_mfc_iter));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 30 | 90.91% | 1 | 50.00% |
| benjamin thery | benjamin thery | 3 | 9.09% | 1 | 50.00% |
| Total | 33 | 100.00% | 2 | 100.00% |
static const struct file_operations ip6mr_mfc_fops = {
.owner = THIS_MODULE,
.open = ipmr_mfc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net,
};
#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 mr6_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_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->vif6_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 | hideaki yoshifuji | 292 | 73.00% | 2 | 16.67% |
| patrick mchardy | patrick mchardy | 46 | 11.50% | 2 | 16.67% |
| thomas goff | thomas goff | 31 | 7.75% | 1 | 8.33% |
| benjamin thery | benjamin thery | 17 | 4.25% | 2 | 16.67% |
| nicolas dichtel | nicolas dichtel | 5 | 1.25% | 1 | 8.33% |
| david s. miller | david s. miller | 5 | 1.25% | 1 | 8.33% |
| eric dumazet | eric dumazet | 2 | 0.50% | 1 | 8.33% |
| ian morris | ian morris | 1 | 0.25% | 1 | 8.33% |
| cesar eduardo barros | cesar eduardo barros | 1 | 0.25% | 1 | 8.33% |
| Total | 400 | 100.00% | 12 | 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 mr6_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 | hideaki yoshifuji | 55 | 38.46% | 1 | 9.09% |
| patrick mchardy | patrick mchardy | 54 | 37.76% | 3 | 27.27% |
| benjamin thery | benjamin thery | 13 | 9.09% | 2 | 18.18% |
| ben greear | ben greear | 7 | 4.90% | 1 | 9.09% |
| david s. miller | david s. miller | 6 | 4.20% | 1 | 9.09% |
| pavel emelianov | pavel emelianov | 4 | 2.80% | 1 | 9.09% |
| cong wang | cong wang | 3 | 2.10% | 1 | 9.09% |
| stephen hemminger | stephen hemminger | 1 | 0.70% | 1 | 9.09% |
| Total | 143 | 100.00% | 11 | 100.00% |
static int reg_vif_get_iflink(const struct net_device *dev)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| nicolas dichtel | 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->destructor = free_netdev;
dev->features |= NETIF_F_NETNS_LOCAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 47 | 83.93% | 1 | 33.33% |
| thomas goff | thomas goff | 6 | 10.71% | 1 | 33.33% |
| stephen hemminger | stephen hemminger | 3 | 5.36% | 1 | 33.33% |
| Total | 56 | 100.00% | 3 | 100.00% |
static struct net_device *ip6mr_reg_vif(struct net *net, struct mr6_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 | hideaki yoshifuji | 70 | 54.26% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 39 | 30.23% | 1 | 14.29% |
| benjamin thery | benjamin thery | 11 | 8.53% | 1 | 14.29% |
| wang chen | wang chen | 5 | 3.88% | 1 | 14.29% |
| tom gundersen | tom gundersen | 2 | 1.55% | 1 | 14.29% |
| ian morris | ian morris | 1 | 0.78% | 1 | 14.29% |
| pavel emelianov | pavel emelianov | 1 | 0.78% | 1 | 14.29% |
| Total | 129 | 100.00% | 7 | 100.00% |
#endif
/*
* Delete a VIF entry
*/
static int mif6_delete(struct mr6_table *mrt, int vifi, struct list_head *head)
{
struct mif_device *v;
struct net_device *dev;
struct inet6_dev *in6_dev;
if (vifi < 0 || vifi >= mrt->maxvif)
return -EADDRNOTAVAIL;
v = &mrt->vif6_table[vifi];
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 (MIF_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),
NETCONFA_MC_FORWARDING,
dev->ifindex, &in6_dev->cnf);
}
if (v->flags & MIFF_REGISTER)
unregister_netdevice_queue(dev, head);
dev_put(dev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 168 | 69.71% | 2 | 22.22% |
| thomas goff | thomas goff | 23 | 9.54% | 1 | 11.11% |
| nicolas dichtel | nicolas dichtel | 21 | 8.71% | 1 | 11.11% |
| benjamin thery | benjamin thery | 12 | 4.98% | 3 | 33.33% |
| patrick mchardy | patrick mchardy | 9 | 3.73% | 1 | 11.11% |
| eric dumazet | eric dumazet | 8 | 3.32% | 1 | 11.11% |
| Total | 241 | 100.00% | 9 | 100.00% |
static inline void ip6mr_cache_free(struct mfc6_cache *c)
{
kmem_cache_free(mrt_cachep, c);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| benjamin thery | benjamin thery | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
/* Destroy an unresolved cache entry, killing queued skbs
and reporting error to netlink readers.
*/
static void ip6mr_destroy_unres(struct mr6_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->mfc_un.unres.unresolved)) != NULL) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)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 | hideaki yoshifuji | 143 | 85.12% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 19 | 11.31% | 2 | 28.57% |
| benjamin thery | benjamin thery | 3 | 1.79% | 2 | 28.57% |
| hong zhi guo | hong zhi guo | 2 | 1.19% | 1 | 14.29% |
| eric w. biederman | eric w. biederman | 1 | 0.60% | 1 | 14.29% |
| Total | 168 | 100.00% | 7 | 100.00% |
/* Timer process for all the unresolved queue. */
static void ipmr_do_expire_process(struct mr6_table *mrt)
{
unsigned long now = jiffies;
unsigned long expires = 10 * HZ;
struct mfc6_cache *c, *next;
list_for_each_entry_safe(c, next, &mrt->mfc6_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, c, RTM_DELROUTE);
ip6mr_destroy_unres(mrt, c);
}
if (!list_empty(&mrt->mfc6_unres_queue))
mod_timer(&mrt->ipmr_expire_timer, jiffies + expires);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 94 | 69.63% | 1 | 16.67% |
| patrick mchardy | patrick mchardy | 32 | 23.70% | 4 | 66.67% |
| nicolas dichtel | nicolas dichtel | 9 | 6.67% | 1 | 16.67% |
| Total | 135 | 100.00% | 6 | 100.00% |
static void ipmr_expire_process(unsigned long arg)
{
struct mr6_table *mrt = (struct mr6_table *)arg;
if (!spin_trylock(&mfc_unres_lock)) {
mod_timer(&mrt->ipmr_expire_timer, jiffies + 1);
return;
}
if (!list_empty(&mrt->mfc6_unres_queue))
ipmr_do_expire_process(mrt);
spin_unlock(&mfc_unres_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 44 | 64.71% | 1 | 25.00% |
| patrick mchardy | patrick mchardy | 24 | 35.29% | 3 | 75.00% |
| Total | 68 | 100.00% | 4 | 100.00% |
/* Fill oifs list. It is called under write locked mrt_lock. */
static void ip6mr_update_thresholds(struct mr6_table *mrt, struct mfc6_cache *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 (MIF_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 | hideaki yoshifuji | 150 | 87.72% | 1 | 14.29% |
| nikolay aleksandrov | nikolay aleksandrov | 10 | 5.85% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 7 | 4.09% | 2 | 28.57% |
| rami rosen | rami rosen | 2 | 1.17% | 1 | 14.29% |
| benjamin thery | benjamin thery | 2 | 1.17% | 2 | 28.57% |
| Total | 171 | 100.00% | 7 | 100.00% |
static int mif6_add(struct net *net, struct mr6_table *mrt,
struct mif6ctl *vifc, int mrtsock)
{
int vifi = vifc->mif6c_mifi;
struct mif_device *v = &mrt->vif6_table[vifi];
struct net_device *dev;
struct inet6_dev *in6_dev;
int err;
/* Is vif busy ? */
if (MIF_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),
NETCONFA_MC_FORWARDING,
dev->ifindex, &in6_dev->cnf);
}
/*
* Fill in the VIF structures
*/
v->rate_limit = vifc->vifc_rate_limit;
v->flags = vifc->mif6c_flags;
if (!mrtsock)
v->flags |= VIFF_STATIC;
v->threshold = vifc->vifc_threshold;
v->bytes_in = 0;
v->bytes_out = 0;
v->pkt_in = 0;
v->pkt_out = 0;
v->link = dev->ifindex;
if (v->flags & MIFF_REGISTER)
v->link = dev_get_iflink(dev);
/* 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);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 251 | 65.71% | 2 | 16.67% |
| wang chen | wang chen | 54 | 14.14% | 2 | 16.67% |
| nicolas dichtel | nicolas dichtel | 24 | 6.28% | 2 | 16.67% |
| thomas goff | thomas goff | 23 | 6.02% | 1 | 8.33% |
| benjamin thery | benjamin thery | 17 | 4.45% | 3 | 25.00% |
| patrick mchardy | patrick mchardy | 13 | 3.40% | 2 | 16.67% |
| Total | 382 | 100.00% | 12 | 100.00% |
static struct mfc6_cache *ip6mr_cache_find(struct mr6_table *mrt,
const struct in6_addr *origin,
const struct in6_addr *mcastgrp)
{
int line = MFC6_HASH(mcastgrp, origin);
struct mfc6_cache *c;
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, origin) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp))
return c;
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 59 | 75.64% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 14 | 17.95% | 2 | 40.00% |
| benjamin thery | benjamin thery | 3 | 3.85% | 1 | 20.00% |
| eric dumazet | eric dumazet | 2 | 2.56% | 1 | 20.00% |
| Total | 78 | 100.00% | 5 | 100.00% |
/* Look for a (*,*,oif) entry */
static struct mfc6_cache *ip6mr_cache_find_any_parent(struct mr6_table *mrt,
mifi_t mifi)
{
int line = MFC6_HASH(&in6addr_any, &in6addr_any);
struct mfc6_cache *c;
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list)
if (ipv6_addr_any(&c->mf6c_origin) &&
ipv6_addr_any(&c->mf6c_mcastgrp) &&
(c->mfc_un.res.ttls[mifi] < 255))
return c;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| nicolas dichtel | nicolas dichtel | 80 | 100.00% | 1 | 100.00% |
| Total | 80 | 100.00% | 1 | 100.00% |
/* Look for a (*,G) entry */
static struct mfc6_cache *ip6mr_cache_find_any(struct mr6_table *mrt,
struct in6_addr *mcastgrp,
mifi_t mifi)
{
int line = MFC6_HASH(mcastgrp, &in6addr_any);
struct mfc6_cache *c, *proxy;
if (ipv6_addr_any(mcastgrp))
goto skip;
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list)
if (ipv6_addr_any(&c->mf6c_origin) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp)) {
if (c->mfc_un.res.ttls[mifi] < 255)
return c;
/* It's ok if the mifi is part of the static tree */
proxy = ip6mr_cache_find_any_parent(mrt,
c->mf6c_parent);
if (proxy && proxy->mfc_un.res.ttls[mifi] < 255)
return c;
}
skip:
return ip6mr_cache_find_any_parent(mrt, mifi);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| nicolas dichtel | nicolas dichtel | 140 | 100.00% | 1 | 100.00% |
| Total | 140 | 100.00% | 1 | 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->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
c->mfc_un.res.minvif = MAXMIFS;
return c;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 39 | 68.42% | 1 | 16.67% |
| thomas goff | thomas goff | 14 | 24.56% | 1 | 16.67% |
| rami rosen | rami rosen | 1 | 1.75% | 1 | 16.67% |
| joe perches | joe perches | 1 | 1.75% | 1 | 16.67% |
| patrick mchardy | patrick mchardy | 1 | 1.75% | 1 | 16.67% |
| ian morris | ian morris | 1 | 1.75% | 1 | 16.67% |
| Total | 57 | 100.00% | 6 | 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->mfc_un.unres.unresolved);
c->mfc_un.unres.expires = jiffies + 10 * HZ;
return c;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 56 | 94.92% | 1 | 25.00% |
| patrick mchardy | patrick mchardy | 1 | 1.69% | 1 | 25.00% |
| joe perches | joe perches | 1 | 1.69% | 1 | 25.00% |
| ian morris | ian morris | 1 | 1.69% | 1 | 25.00% |
| Total | 59 | 100.00% | 4 | 100.00% |
/*
* A cache entry has gone into a resolved state from queued
*/
static void ip6mr_cache_resolve(struct net *net, struct mr6_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->mfc_un.unres.unresolved))) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct ipv6hdr));
if (__ip6mr_fill_mroute(mrt, skb, 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 | hideaki yoshifuji | 173 | 88.72% | 2 | 28.57% |
| patrick mchardy | patrick mchardy | 18 | 9.23% | 3 | 42.86% |
| hong zhi guo | hong zhi guo | 3 | 1.54% | 1 | 14.29% |
| eric w. biederman | eric w. biederman | 1 | 0.51% | 1 | 14.29% |
| Total | 195 | 100.00% | 7 | 100.00% |
/*
* Bounce a cache query up to pim6sd. We could use netlink for this but pim6sd
* expects the following bizarre scheme.
*
* Called under mrt_lock.
*/
static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt,
mifi_t mifi, int assert)
{
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;
}
if (!mrt->mroute6_sk) {
kfree_skb(skb);
return -EINVAL;
}
/*
* Deliver to user space multicast routing algorithms
*/
ret = sock_queue_rcv_skb(mrt->mroute6_sk, skb);
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 | hideaki yoshifuji | 354 | 91.00% | 2 | 18.18% |
| benjamin thery | benjamin thery | 13 | 3.34% | 3 | 27.27% |
| eric dumazet | eric dumazet | 7 | 1.80% | 1 | 9.09% |
| patrick mchardy | patrick mchardy | 5 | 1.29% | 1 | 9.09% |
| alexey dobriyan | alexey dobriyan | 4 | 1.03% | 1 | 9.09% |
| rami rosen | rami rosen | 3 | 0.77% | 1 | 9.09% |
| joe perches | joe perches | 2 | 0.51% | 1 | 9.09% |
| ian morris | ian morris | 1 | 0.26% | 1 | 9.09% |
| Total | 389 | 100.00% | 11 | 100.00% |
/*
* Queue a packet for resolution. It gets locked cache entry!
*/
static int
ip6mr_cache_unresolved(struct mr6_table *mrt, mifi_t mifi, struct sk_buff *skb)
{
bool found = false;
int err;
struct mfc6_cache *c;
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry(c, &mrt->mfc6_unres_queue, 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->mf6c_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->list, &mrt->mfc6_unres_queue);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
ipmr_do_expire_process(mrt);
}
/*
* See if we can append the packet
*/
if (c->mfc_un.unres.unresolved.qlen > 3) {
kfree_skb(skb);
err = -ENOBUFS;
} else {
skb_queue_tail(&c->mfc_un.unres.unresolved, skb);
err = 0;
}
spin_unlock_bh(&mfc_unres_lock);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 238 | 79.60% | 1 | 11.11% |
| patrick mchardy | patrick mchardy | 38 | 12.71% | 4 | 44.44% |
| benjamin thery | benjamin thery | 11 | 3.68% | 2 | 22.22% |
| nicolas dichtel | nicolas dichtel | 9 | 3.01% | 1 | 11.11% |
| rami rosen | rami rosen | 3 | 1.00% | 1 | 11.11% |
| Total | 299 | 100.00% | 9 | 100.00% |
/*
* MFC6 cache manipulation by user space
*/
static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc,
int parent)
{
int line;
struct mfc6_cache *c, *next;
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp,
&mfc->mf6cc_mcastgrp.sin6_addr) &&
(parent == -1 || parent == c->mf6c_parent)) {
write_lock_bh(&mrt_lock);
list_del(&c->list);
write_unlock_bh(&mrt_lock);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
ip6mr_cache_free(c);
return 0;
}
}
return -ENOENT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 102 | 68.46% | 1 | 14.29% |
| nicolas dichtel | nicolas dichtel | 25 | 16.78% | 2 | 28.57% |
| patrick mchardy | patrick mchardy | 18 | 12.08% | 2 | 28.57% |
| benjamin thery | benjamin thery | 4 | 2.68% | 2 | 28.57% |
| Total | 149 | 100.00% | 7 | 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 mr6_table *mrt;
struct mif_device *v;
int ct;
LIST_HEAD(list);
if (event != NETDEV_UNREGISTER)
return NOTIFY_DONE;
ip6mr_for_each_table(mrt, net) {
v = &mrt->vif6_table[0];
for (ct = 0; ct < mrt->maxvif; ct++, v++) {
if (v->dev == dev)
mif6_delete(mrt, ct, &list);
}
}
unregister_netdevice_many(&list);
return NOTIFY_DONE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 85 | 64.89% | 1 | 16.67% |
| patrick mchardy | patrick mchardy | 16 | 12.21% | 2 | 33.33% |
| eric dumazet | eric dumazet | 14 | 10.69% | 1 | 16.67% |
| benjamin thery | benjamin thery | 13 | 9.92% | 1 | 16.67% |
| jiri pirko | jiri pirko | 3 | 2.29% | 1 | 16.67% |
| Total | 131 | 100.00% | 6 | 100.00% |
static struct notifier_block ip6_mr_notifier = {
.notifier_call = ip6mr_device_event
};
/*
* Setup for IP multicast routing
*/
static int __net_init ip6mr_net_init(struct net *net)
{
int err;
err = ip6mr_rules_init(net);
if (err < 0)
goto fail;
#ifdef CONFIG_PROC_FS
err = -ENOMEM;
if (!proc_create("ip6_mr_vif", 0, net->proc_net, &ip6mr_vif_fops))
goto proc_vif_fail;
if (!proc_create("ip6_mr_cache", 0, net->proc_net, &ip6mr_mfc_fops))
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
fail:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| benjamin thery | benjamin thery | 86 | 76.79% | 3 | 42.86% |
| gao feng | gao feng | 15 | 13.39% | 2 | 28.57% |
| patrick mchardy | patrick mchardy | 11 | 9.82% | 2 | 28.57% |
| Total | 112 | 100.00% | 7 | 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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| benjamin thery | benjamin thery | 28 | 70.00% | 3 | 60.00% |
| gao feng | gao feng | 10 | 25.00% | 1 | 20.00% |
| patrick mchardy | patrick mchardy | 2 | 5.00% | 1 | 20.00% |
| Total | 40 | 100.00% | 5 | 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
rtnl_register(RTNL_FAMILY_IP6MR, RTM_GETROUTE, NULL,
ip6mr_rtm_dumproute, NULL);
return 0;
#ifdef CONFIG_IPV6_PIMSM_V2
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 | thomas goff | 43 | 28.67% | 1 | 12.50% |
| hideaki yoshifuji | hideaki yoshifuji | 37 | 24.67% | 1 | 12.50% |
| benjamin thery | benjamin thery | 27 | 18.00% | 2 | 25.00% |
| wang chen | wang chen | 26 | 17.33% | 1 | 12.50% |
| patrick mchardy | patrick mchardy | 11 | 7.33% | 1 | 12.50% |
| joe perches | joe perches | 4 | 2.67% | 1 | 12.50% |
| greg rose | greg rose | 2 | 1.33% | 1 | 12.50% |
| Total | 150 | 100.00% | 8 | 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 | duan jiong | 20 | 45.45% | 1 | 25.00% |
| wang chen | wang chen | 17 | 38.64% | 1 | 25.00% |
| benjamin thery | benjamin thery | 6 | 13.64% | 1 | 25.00% |
| hideaki yoshifuji | hideaki yoshifuji | 1 | 2.27% | 1 | 25.00% |
| Total | 44 | 100.00% | 4 | 100.00% |
static int ip6mr_mfc_add(struct net *net, struct mr6_table *mrt,
struct mf6cctl *mfc, int mrtsock, int parent)
{
bool found = false;
int line;
struct mfc6_cache *uc, *c;
unsigned char ttls[MAXMIFS];
int i;
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;
}
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp,
&mfc->mf6cc_mcastgrp.sin6_addr) &&
(parent == -1 || parent == mfc->mf6cc_parent)) {
found = true;
break;
}
}
if (found) {
write_lock_bh(&mrt_lock);
c->mf6c_parent = mfc->mf6cc_parent;
ip6mr_update_thresholds(mrt, c, ttls);
if (!mrtsock)
c->mfc_flags |= MFC_STATIC;
write_unlock_bh(&mrt_lock);
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->mf6c_parent = mfc->mf6cc_parent;
ip6mr_update_thresholds(mrt, c, ttls);
if (!mrtsock)
c->mfc_flags |= MFC_STATIC;
write_lock_bh(&mrt_lock);
list_add(&c->list, &mrt->mfc6_cache_array[line]);
write_unlock_bh(&mrt_lock);
/*
* 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->mfc6_unres_queue, list) {
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->mfc6_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);
}
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 345 | 69.70% | 1 | 7.69% |
| patrick mchardy | patrick mchardy | 86 | 17.37% | 5 | 38.46% |
| nicolas dichtel | nicolas dichtel | 45 | 9.09% | 2 | 15.38% |
| benjamin thery | benjamin thery | 15 | 3.03% | 3 | 23.08% |
| rami rosen | rami rosen | 3 | 0.61% | 1 | 7.69% |
| ian morris | ian morris | 1 | 0.20% | 1 | 7.69% |
| Total | 495 | 100.00% | 13 | 100.00% |
/*
* Close the multicast socket, and clear the vif tables etc
*/
static void mroute_clean_tables(struct mr6_table *mrt, bool all)
{
int i;
LIST_HEAD(list);
struct mfc6_cache *c, *next;
/*
* Shut down all active vif entries
*/
for (i = 0; i < mrt->maxvif; i++) {
if (!all && (mrt->vif6_table[i].flags & VIFF_STATIC))
continue;
mif6_delete(mrt, i, &list);
}
unregister_netdevice_many(&list);
/*
* Wipe the cache
*/
for (i = 0; i < MFC6_LINES; i++) {
list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[i], list) {
if (!all && (c->mfc_flags & MFC_STATIC))
continue;
write_lock_bh(&mrt_lock);
list_del(&c->list);
write_unlock_bh(&mrt_lock);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
ip6mr_cache_free(c);
}
}
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry_safe(c, next, &mrt->mfc6_unres_queue, list) {
list_del(&c->list);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
ip6mr_destroy_unres(mrt, c);
}
spin_unlock_bh(&mfc_unres_lock);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 126 | 57.01% | 1 | 10.00% |
| patrick mchardy | patrick mchardy | 46 | 20.81% | 3 | 30.00% |
| nicolas dichtel | nicolas dichtel | 18 | 8.14% | 1 | 10.00% |
| eric dumazet | eric dumazet | 14 | 6.33% | 1 | 10.00% |
| nikolay aleksandrov | nikolay aleksandrov | 11 | 4.98% | 1 | 10.00% |
| benjamin thery | benjamin thery | 6 | 2.71% | 3 | 30.00% |
| Total | 221 | 100.00% | 10 | 100.00% |
static int ip6mr_sk_init(struct mr6_table *mrt, struct sock *sk)
{
int err = 0;
struct net *net = sock_net(sk);
rtnl_lock();
write_lock_bh(&mrt_lock);
if (likely(mrt->mroute6_sk == NULL)) {
mrt->mroute6_sk = sk;
net->ipv6.devconf_all->mc_forwarding++;
} else {
err = -EADDRINUSE;
}
write_unlock_bh(&mrt_lock);
if (!err)
inet6_netconf_notify_devconf(net, NETCONFA_MC_FORWARDING,
NETCONFA_IFINDEX_ALL,
net->ipv6.devconf_all);
rtnl_unlock();
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 42 | 38.89% | 1 | 14.29% |
| eric dumazet | eric dumazet | 20 | 18.52% | 1 | 14.29% |
| nicolas dichtel | nicolas dichtel | 15 | 13.89% | 1 | 14.29% |
| benjamin thery | benjamin thery | 14 | 12.96% | 2 | 28.57% |
| thomas goff | thomas goff | 10 | 9.26% | 1 | 14.29% |
| patrick mchardy | patrick mchardy | 7 | 6.48% | 1 | 14.29% |
| Total | 108 | 100.00% | 7 | 100.00% |
int ip6mr_sk_done(struct sock *sk)
{
int err = -EACCES;
struct net *net = sock_net(sk);
struct mr6_table *mrt;
rtnl_lock();
ip6mr_for_each_table(mrt, net) {
if (sk == mrt->mroute6_sk) {
write_lock_bh(&mrt_lock);
mrt->mroute6_sk = NULL;
net->ipv6.devconf_all->mc_forwarding--;
write_unlock_bh(&mrt_lock);
inet6_netconf_notify_devconf(net,
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 | hideaki yoshifuji | 45 | 40.18% | 1 | 11.11% |
| patrick mchardy | patrick mchardy | 21 | 18.75% | 2 | 22.22% |
| nicolas dichtel | nicolas dichtel | 15 | 13.39% | 1 | 11.11% |
| benjamin thery | benjamin thery | 14 | 12.50% | 2 | 22.22% |
| thomas goff | thomas goff | 9 | 8.04% | 1 | 11.11% |
| eric dumazet | eric dumazet | 6 | 5.36% | 1 | 11.11% |
| nikolay aleksandrov | nikolay aleksandrov | 2 | 1.79% | 1 | 11.11% |
| Total | 112 | 100.00% | 9 | 100.00% |
struct sock *mroute6_socket(struct net *net, struct sk_buff *skb)
{
struct mr6_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 mrt->mroute6_sk;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 68 | 88.31% | 2 | 50.00% |
| david s. miller | david s. miller | 6 | 7.79% | 1 | 25.00% |
| julian anastasov | julian anastasov | 3 | 3.90% | 1 | 25.00% |
| Total | 77 | 100.00% | 4 | 100.00% |
/*
* 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 mr6_table *mrt;
mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT);
if (!mrt)
return -ENOENT;
if (optname != MRT6_INIT) {
if (sk != mrt->mroute6_sk && !ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EACCES;
}
switch (optname) {
case MRT6_INIT:
if (sk->sk_type != SOCK_RAW ||
inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
return -EOPNOTSUPP;
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 == mrt->mroute6_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, 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;
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 == mrt->mroute6_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 == mrt->mroute6_sk)
return -EBUSY;
rtnl_lock();
ret = 0;
if (!ip6mr_new_table(net, v))
ret = -ENOMEM;
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 | hideaki yoshifuji | 410 | 61.93% | 2 | 12.50% |
| patrick mchardy | patrick mchardy | 138 | 20.85% | 2 | 12.50% |
| nicolas dichtel | nicolas dichtel | 35 | 5.29% | 1 | 6.25% |
| joe perches | joe perches | 26 | 3.93% | 1 | 6.25% |
| benjamin thery | benjamin thery | 26 | 3.93% | 2 | 12.50% |
| dan carpenter | dan carpenter | 15 | 2.27% | 1 | 6.25% |
| eric w. biederman | eric w. biederman | 5 | 0.76% | 1 | 6.25% |
| eric dumazet | eric dumazet | 3 | 0.45% | 2 | 12.50% |
| rami rosen | rami rosen | 2 | 0.30% | 2 | 12.50% |
| david s. miller | david s. miller | 1 | 0.15% | 1 | 6.25% |
| ian morris | ian morris | 1 | 0.15% | 1 | 6.25% |
| Total | 662 | 100.00% | 16 | 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 mr6_table *mrt;
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 | hideaki yoshifuji | 138 | 75.41% | 2 | 33.33% |
| patrick mchardy | patrick mchardy | 32 | 17.49% | 2 | 33.33% |
| benjamin thery | benjamin thery | 12 | 6.56% | 1 | 16.67% |
| ian morris | ian morris | 1 | 0.55% | 1 | 16.67% |
| Total | 183 | 100.00% | 6 | 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 mif_device *vif;
struct mfc6_cache *c;
struct net *net = sock_net(sk);
struct mr6_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->vif6_table[vr.mifi];
if (MIF_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;
read_lock(&mrt_lock);
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->mfc_un.res.pkt;
sr.bytecnt = c->mfc_un.res.bytes;
sr.wrong_if = c->mfc_un.res.wrong_if;
read_unlock(&mrt_lock);
if (copy_to_user(arg, &sr, sizeof(sr)))
return -EFAULT;
return 0;
}
read_unlock(&mrt_lock);
return -EADDRNOTAVAIL;
default:
return -ENOIOCTLCMD;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 305 | 86.16% | 1 | 16.67% |
| patrick mchardy | patrick mchardy | 34 | 9.60% | 2 | 33.33% |
| benjamin thery | benjamin thery | 14 | 3.95% | 2 | 33.33% |
| ian morris | ian morris | 1 | 0.28% | 1 | 16.67% |
| Total | 354 | 100.00% | 6 | 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 mif_device *vif;
struct mfc6_cache *c;
struct net *net = sock_net(sk);
struct mr6_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->vif6_table[vr.mifi];
if (MIF_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;
read_lock(&mrt_lock);
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->mfc_un.res.pkt;
sr.bytecnt = c->mfc_un.res.bytes;
sr.wrong_if = c->mfc_un.res.wrong_if;
read_unlock(&mrt_lock);
if (copy_to_user(arg, &sr, sizeof(sr)))
return -EFAULT;
return 0;
}
read_unlock(&mrt_lock);
return -EADDRNOTAVAIL;
default:
return -ENOIOCTLCMD;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| david s. miller | david s. miller | 354 | 99.72% | 1 | 50.00% |
| ian morris | ian morris | 1 | 0.28% | 1 | 50.00% |
| Total | 355 | 100.00% | 2 | 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 | hideaki yoshifuji | 17 | 25.76% | 1 | 9.09% |
| vincent bernat | vincent bernat | 17 | 25.76% | 1 | 9.09% |
| eric w. biederman | eric w. biederman | 11 | 16.67% | 4 | 36.36% |
| rami rosen | rami rosen | 8 | 12.12% | 1 | 9.09% |
| david s. miller | david s. miller | 7 | 10.61% | 1 | 9.09% |
| eric dumazet | eric dumazet | 5 | 7.58% | 2 | 18.18% |
| denis v. lunev | 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 mr6_table *mrt,
struct sk_buff *skb, struct mfc6_cache *c, int vifi)
{
struct ipv6hdr *ipv6h;
struct mif_device *vif = &mrt->vif6_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 | hideaki yoshifuji | 255 | 83.61% | 2 | 13.33% |
| patrick mchardy | patrick mchardy | 12 | 3.93% | 2 | 13.33% |
| david s. miller | david s. miller | 9 | 2.95% | 2 | 13.33% |
| li rongqing | li rongqing | 9 | 2.95% | 1 | 6.67% |
| eric dumazet | eric dumazet | 5 | 1.64% | 1 | 6.67% |
| pavel emelianov | pavel emelianov | 4 | 1.31% | 1 | 6.67% |
| ilpo jarvinen | ilpo jarvinen | 3 | 0.98% | 1 | 6.67% |
| benjamin thery | benjamin thery | 3 | 0.98% | 1 | 6.67% |
| eric w. biederman | eric w. biederman | 2 | 0.66% | 1 | 6.67% |
| ian morris | ian morris | 1 | 0.33% | 1 | 6.67% |
| changli gao | changli gao | 1 | 0.33% | 1 | 6.67% |
| jan engelhardt | jan engelhardt | 1 | 0.33% | 1 | 6.67% |
| Total | 305 | 100.00% | 15 | 100.00% |
static int ip6mr_find_vif(struct mr6_table *mrt, struct net_device *dev)
{
int ct;
for (ct = mrt->maxvif - 1; ct >= 0; ct--) {
if (mrt->vif6_table[ct].dev == dev)
break;
}
return ct;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 46 | 83.64% | 1 | 33.33% |
| patrick mchardy | patrick mchardy | 7 | 12.73% | 1 | 33.33% |
| benjamin thery | benjamin thery | 2 | 3.64% | 1 | 33.33% |
| Total | 55 | 100.00% | 3 | 100.00% |
static void ip6_mr_forward(struct net *net, struct mr6_table *mrt,
struct sk_buff *skb, struct mfc6_cache *cache)
{
int psend = -1;
int vif, ct;
int true_vifi = ip6mr_find_vif(mrt, skb->dev);
vif = cache->mf6c_parent;
cache->mfc_un.res.pkt++;
cache->mfc_un.res.bytes += skb->len;
cache->mfc_un.res.lastuse = jiffies;
if (ipv6_addr_any(&cache->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.
*/
cache_proxy = ip6mr_cache_find_any_parent(mrt, vif);
if (cache_proxy &&
cache_proxy->mfc_un.res.ttls[true_vifi] < 255)
goto forward;
}
/*
* Wrong interface: drop packet and (maybe) send PIM assert.
*/
if (mrt->vif6_table[vif].dev != skb->dev) {
cache->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 ||
cache->mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) {
cache->mfc_un.res.last_assert = jiffies;
ip6mr_cache_report(mrt, skb, true_vifi, MRT6MSG_WRONGMIF);
}
goto dont_forward;
}
forward:
mrt->vif6_table[vif].pkt_in++;
mrt->vif6_table[vif].bytes_in += skb->len;
/*
* Forward the frame
*/
if (ipv6_addr_any(&cache->mf6c_origin) &&
ipv6_addr_any(&cache->mf6c_mcastgrp)) {
if (true_vifi >= 0 &&
true_vifi != cache->mf6c_parent &&
ipv6_hdr(skb)->hop_limit >
cache->mfc_un.res.ttls[cache->mf6c_parent]) {
/* It's an (*,*) entry and the packet is not coming from
* the upstream: forward the packet to the upstream
* only.
*/
psend = cache->mf6c_parent;
goto last_forward;
}
goto dont_forward;
}
for (ct = cache->mfc_un.res.maxvif - 1; ct >= cache->mfc_un.res.minvif; ct--) {
/* For (*,G) entry, don't forward to the incoming interface */
if ((!ipv6_addr_any(&cache->mf6c_origin) || ct != true_vifi) &&
ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
ip6mr_forward2(net, mrt, skb2, cache, psend);
}
psend = ct;
}
}
last_forward:
if (psend != -1) {
ip6mr_forward2(net, mrt, skb, cache, psend);
return;
}
dont_forward:
kfree_skb(skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 277 | 59.06% | 2 | 22.22% |
| nicolas dichtel | nicolas dichtel | 149 | 31.77% | 1 | 11.11% |
| patrick mchardy | patrick mchardy | 24 | 5.12% | 2 | 22.22% |
| nikolay aleksandrov | nikolay aleksandrov | 10 | 2.13% | 1 | 11.11% |
| benjamin thery | benjamin thery | 6 | 1.28% | 1 | 11.11% |
| rami rosen | rami rosen | 2 | 0.43% | 1 | 11.11% |
| fabian frederick | fabian frederick | 1 | 0.21% | 1 | 11.11% |
| Total | 469 | 100.00% | 9 | 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 mr6_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 | hideaki yoshifuji | 119 | 48.97% | 1 | 11.11% |
| patrick mchardy | patrick mchardy | 55 | 22.63% | 3 | 33.33% |
| nicolas dichtel | nicolas dichtel | 41 | 16.87% | 1 | 11.11% |
| benjamin thery | benjamin thery | 14 | 5.76% | 1 | 11.11% |
| ben greear | ben greear | 7 | 2.88% | 1 | 11.11% |
| david s. miller | david s. miller | 5 | 2.06% | 1 | 11.11% |
| ian morris | ian morris | 2 | 0.82% | 1 | 11.11% |
| Total | 243 | 100.00% | 9 | 100.00% |
static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
struct mfc6_cache *c, struct rtmsg *rtm)
{
struct rta_mfc_stats mfcs;
struct nlattr *mp_attr;
struct rtnexthop *nhp;
unsigned long lastuse;
int ct;
/* If cache is unresolved, don't try to parse IIF and OIF */
if (c->mf6c_parent >= MAXMIFS)
return -ENOENT;
if (MIF_EXISTS(mrt, c->mf6c_parent) &&
nla_put_u32(skb, RTA_IIF, mrt->vif6_table[c->mf6c_parent].dev->ifindex) < 0)
return -EMSGSIZE;
mp_attr = nla_nest_start(skb, RTA_MULTIPATH);
if (!mp_attr)
return -EMSGSIZE;
for (ct = c->mfc_un.res.minvif; ct < c->mfc_un.res.maxvif; ct++) {
if (MIF_EXISTS(mrt, ct) && c->mfc_un.res.ttls[ct] < 255) {
nhp = nla_reserve_nohdr(skb, sizeof(*nhp));
if (!nhp) {
nla_nest_cancel(skb, mp_attr);
return -EMSGSIZE;
}
nhp->rtnh_flags = 0;
nhp->rtnh_hops = c->mfc_un.res.ttls[ct];
nhp->rtnh_ifindex = mrt->vif6_table[ct].dev->ifindex;
nhp->rtnh_len = sizeof(*nhp);
}
}
nla_nest_end(skb, mp_attr);
lastuse = READ_ONCE(c->mfc_un.res.lastuse);
lastuse = time_after_eq(jiffies, lastuse) ? jiffies - lastuse : 0;
mfcs.mfcs_packets = c->mfc_un.res.pkt;
mfcs.mfcs_bytes = c->mfc_un.res.bytes;
mfcs.mfcs_wrong_if = c->mfc_un.res.wrong_if;
if (nla_put_64bit(skb, RTA_MFC_STATS, sizeof(mfcs), &mfcs, RTA_PAD) ||
nla_put_u64_64bit(skb, RTA_EXPIRES, jiffies_to_clock_t(lastuse),
RTA_PAD))
return -EMSGSIZE;
rtm->rtm_type = RTN_MULTICAST;
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 157 | 43.61% | 2 | 13.33% |
| nicolas dichtel | nicolas dichtel | 126 | 35.00% | 4 | 26.67% |
| nikolay aleksandrov | nikolay aleksandrov | 54 | 15.00% | 2 | 13.33% |
| patrick mchardy | patrick mchardy | 10 | 2.78% | 3 | 20.00% |
| thomas graf | thomas graf | 9 | 2.50% | 1 | 6.67% |
| ian morris | ian morris | 2 | 0.56% | 1 | 6.67% |
| benjamin thery | benjamin thery | 1 | 0.28% | 1 | 6.67% |
| dan carpenter | dan carpenter | 1 | 0.28% | 1 | 6.67% |
| Total | 360 | 100.00% | 15 | 100.00% |
int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm,
int nowait, u32 portid)
{
int err;
struct mr6_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;
if (nowait) {
read_unlock(&mrt_lock);
return -EAGAIN;
}
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;
}
if (!nowait && (rtm->rtm_flags&RTM_F_NOTIFY))
cache->mfc_flags |= MFC_NOTIFY;
err = __ip6mr_fill_mroute(mrt, skb, cache, rtm);
read_unlock(&mrt_lock);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 327 | 76.58% | 1 | 9.09% |
| nicolas dichtel | nicolas dichtel | 45 | 10.54% | 1 | 9.09% |
| patrick mchardy | patrick mchardy | 29 | 6.79% | 4 | 36.36% |
| nikolay aleksandrov | nikolay aleksandrov | 12 | 2.81% | 1 | 9.09% |
| benjamin thery | benjamin thery | 7 | 1.64% | 1 | 9.09% |
| eric dumazet | eric dumazet | 3 | 0.70% | 1 | 9.09% |
| ian morris | ian morris | 2 | 0.47% | 1 | 9.09% |
| alexey dobriyan | alexey dobriyan | 2 | 0.47% | 1 | 9.09% |
| Total | 427 | 100.00% | 11 | 100.00% |
static int ip6mr_fill_mroute(struct mr6_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->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 = __ip6mr_fill_mroute(mrt, skb, 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 | patrick mchardy | 182 | 72.80% | 1 | 9.09% |
| nicolas dichtel | nicolas dichtel | 46 | 18.40% | 5 | 45.45% |
| david s. miller | david s. miller | 14 | 5.60% | 1 | 9.09% |
| johannes berg | johannes berg | 3 | 1.20% | 1 | 9.09% |
| jiri benc | jiri benc | 2 | 0.80% | 1 | 9.09% |
| eric w. biederman | eric w. biederman | 2 | 0.80% | 1 | 9.09% |
| ian morris | ian morris | 1 | 0.40% | 1 | 9.09% |
| Total | 250 | 100.00% | 11 | 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 | nicolas dichtel | 95 | 100.00% | 2 | 100.00% |
| Total | 95 | 100.00% | 2 | 100.00% |
static void mr6_netlink_event(struct mr6_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->mf6c_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 | nicolas dichtel | 136 | 99.27% | 2 | 66.67% |
| ian morris | ian morris | 1 | 0.73% | 1 | 33.33% |
| Total | 137 | 100.00% | 3 | 100.00% |
static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct mr6_table *mrt;
struct mfc6_cache *mfc;
unsigned int t = 0, s_t;
unsigned int h = 0, s_h;
unsigned int e = 0, s_e;
s_t = cb->args[0];
s_h = cb->args[1];
s_e = cb->args[2];
read_lock(&mrt_lock);
ip6mr_for_each_table(mrt, net) {
if (t < s_t)
goto next_table;
if (t > s_t)
s_h = 0;
for (h = s_h; h < MFC6_LINES; h++) {
list_for_each_entry(mfc, &mrt->mfc6_cache_array[h], list) {
if (e < s_e)
goto next_entry;
if (ip6mr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
mfc, RTM_NEWROUTE,
NLM_F_MULTI) < 0)
goto done;
next_entry:
e++;
}
e = s_e = 0;
}
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry(mfc, &mrt->mfc6_unres_queue, list) {
if (e < s_e)
goto next_entry2;
if (ip6mr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
mfc, RTM_NEWROUTE,
NLM_F_MULTI) < 0) {
spin_unlock_bh(&mfc_unres_lock);
goto done;
}
next_entry2:
e++;
}
spin_unlock_bh(&mfc_unres_lock);
e = s_e = 0;
s_h = 0;
next_table:
t++;
}
done:
read_unlock(&mrt_lock);
cb->args[2] = e;
cb->args[1] = h;
cb->args[0] = t;
return skb->len;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| patrick mchardy | patrick mchardy | 246 | 73.21% | 1 | 20.00% |
| nicolas dichtel | nicolas dichtel | 89 | 26.49% | 3 | 60.00% |
| eric w. biederman | eric w. biederman | 1 | 0.30% | 1 | 20.00% |
| Total | 336 | 100.00% | 5 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hideaki yoshifuji | hideaki yoshifuji | 6311 | 52.19% | 3 | 2.44% |
| patrick mchardy | patrick mchardy | 2729 | 22.57% | 8 | 6.50% |
| nicolas dichtel | nicolas dichtel | 1211 | 10.01% | 14 | 11.38% |
| benjamin thery | benjamin thery | 572 | 4.73% | 11 | 8.94% |
| david s. miller | david s. miller | 465 | 3.85% | 5 | 4.07% |
| thomas goff | thomas goff | 159 | 1.31% | 3 | 2.44% |
| nikolay aleksandrov | nikolay aleksandrov | 104 | 0.86% | 5 | 4.07% |
| wang chen | wang chen | 102 | 0.84% | 3 | 2.44% |
| eric dumazet | eric dumazet | 100 | 0.83% | 9 | 7.32% |
| joe perches | joe perches | 36 | 0.30% | 5 | 4.07% |
| rami rosen | rami rosen | 27 | 0.22% | 4 | 3.25% |
| hannes frederic sowa | hannes frederic sowa | 26 | 0.22% | 2 | 1.63% |
| gao feng | gao feng | 25 | 0.21% | 2 | 1.63% |
| eric w. biederman | eric w. biederman | 24 | 0.20% | 8 | 6.50% |
| ian morris | ian morris | 24 | 0.20% | 1 | 0.81% |
| stephen hemminger | stephen hemminger | 20 | 0.17% | 4 | 3.25% |
| duan jiong | duan jiong | 20 | 0.17% | 1 | 0.81% |
| vincent bernat | vincent bernat | 17 | 0.14% | 1 | 0.81% |
| dan carpenter | dan carpenter | 16 | 0.13% | 2 | 1.63% |
| ben greear | ben greear | 14 | 0.12% | 2 | 1.63% |
| pavel emelianov | pavel emelianov | 9 | 0.07% | 1 | 0.81% |
| thomas graf | thomas graf | 9 | 0.07% | 1 | 0.81% |
| li rongqing | li rongqing | 9 | 0.07% | 1 | 0.81% |
| alexey dobriyan | alexey dobriyan | 7 | 0.06% | 2 | 1.63% |
| richard laing | richard laing | 6 | 0.05% | 1 | 0.81% |
| americo wang | americo wang | 5 | 0.04% | 3 | 2.44% |
| hong zhi guo | hong zhi guo | 5 | 0.04% | 1 | 0.81% |
| paul gortmaker | paul gortmaker | 3 | 0.02% | 1 | 0.81% |
| tejun heo | tejun heo | 3 | 0.02% | 1 | 0.81% |
| cong wang | cong wang | 3 | 0.02% | 1 | 0.81% |
| johannes berg | johannes berg | 3 | 0.02% | 1 | 0.81% |
| julian anastasov | julian anastasov | 3 | 0.02% | 1 | 0.81% |
| dave jones | dave jones | 3 | 0.02% | 1 | 0.81% |
| ilpo jarvinen | ilpo jarvinen | 3 | 0.02% | 1 | 0.81% |
| jiri pirko | jiri pirko | 3 | 0.02% | 1 | 0.81% |
| tom gundersen | tom gundersen | 2 | 0.02% | 1 | 0.81% |
| harvey harrison | harvey harrison | 2 | 0.02% | 1 | 0.81% |
| jiri benc | jiri benc | 2 | 0.02% | 1 | 0.81% |
| greg rose | greg rose | 2 | 0.02% | 1 | 0.81% |
| jan engelhardt | jan engelhardt | 1 | 0.01% | 1 | 0.81% |
| james morris | james morris | 1 | 0.01% | 1 | 0.81% |
| changli gao | changli gao | 1 | 0.01% | 1 | 0.81% |
| fabian frederick | fabian frederick | 1 | 0.01% | 1 | 0.81% |
| denis v. lunev | denis v. lunev | 1 | 0.01% | 1 | 0.81% |
| andi kleen | andi kleen | 1 | 0.01% | 1 | 0.81% |
| cesar eduardo barros | cesar eduardo barros | 1 | 0.01% | 1 | 0.81% |
| al viro | al viro | 1 | 0.01% | 1 | 0.81% |
| Total | 12092 | 100.00% | 123 | 100.00% |
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