Release 4.14 net/core/neighbour.c
/*
* Generic address resolution entity
*
* Authors:
* Pedro Roque <roque@di.fc.ul.pt>
* Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
*
* 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.
*
* Fixes:
* Vitaly E. Lavrov releasing NULL neighbor in neigh_add.
* Harald Welte Add neighbour cache statistics like rtstat
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/socket.h>
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
#include <linux/times.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/sock.h>
#include <net/netevent.h>
#include <net/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/random.h>
#include <linux/string.h>
#include <linux/log2.h>
#include <linux/inetdevice.h>
#include <net/addrconf.h>
#define DEBUG
#define NEIGH_DEBUG 1
#define neigh_dbg(level, fmt, ...) \
do { \
if (level <= NEIGH_DEBUG) \
pr_debug(fmt, ##__VA_ARGS__); \
} while (0)
#define PNEIGH_HASHMASK 0xF
static void neigh_timer_handler(unsigned long arg);
static void __neigh_notify(struct neighbour *n, int type, int flags,
u32 pid);
static void neigh_update_notify(struct neighbour *neigh, u32 nlmsg_pid);
static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev);
#ifdef CONFIG_PROC_FS
static const struct file_operations neigh_stat_seq_fops;
#endif
/*
Neighbour hash table buckets are protected with rwlock tbl->lock.
- All the scans/updates to hash buckets MUST be made under this lock.
- NOTHING clever should be made under this lock: no callbacks
to protocol backends, no attempts to send something to network.
It will result in deadlocks, if backend/driver wants to use neighbour
cache.
- If the entry requires some non-trivial actions, increase
its reference count and release table lock.
Neighbour entries are protected:
- with reference count.
- with rwlock neigh->lock
Reference count prevents destruction.
neigh->lock mainly serializes ll address data and its validity state.
However, the same lock is used to protect another entry fields:
- timer
- resolution queue
Again, nothing clever shall be made under neigh->lock,
the most complicated procedure, which we allow is dev->hard_header.
It is supposed, that dev->hard_header is simplistic and does
not make callbacks to neighbour tables.
*/
static int neigh_blackhole(struct neighbour *neigh, struct sk_buff *skb)
{
kfree_skb(skb);
return -ENETDOWN;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 20 | 80.00% | 2 | 66.67% |
David S. Miller | 5 | 20.00% | 1 | 33.33% |
Total | 25 | 100.00% | 3 | 100.00% |
static void neigh_cleanup_and_release(struct neighbour *neigh)
{
if (neigh->parms->neigh_cleanup)
neigh->parms->neigh_cleanup(neigh);
__neigh_notify(neigh, RTM_DELNEIGH, 0, 0);
call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh);
neigh_release(neigh);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 42 | 82.35% | 2 | 50.00% |
Ido Schimmel | 7 | 13.73% | 1 | 25.00% |
Roopa Prabhu | 2 | 3.92% | 1 | 25.00% |
Total | 51 | 100.00% | 4 | 100.00% |
/*
* It is random distribution in the interval (1/2)*base...(3/2)*base.
* It corresponds to default IPv6 settings and is not overridable,
* because it is really reasonable choice.
*/
unsigned long neigh_rand_reach_time(unsigned long base)
{
return base ? (prandom_u32() % base) + (base >> 1) : 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 22 | 78.57% | 1 | 33.33% |
Hideaki Yoshifuji / 吉藤英明 | 5 | 17.86% | 1 | 33.33% |
Aruna-Hewapathirane | 1 | 3.57% | 1 | 33.33% |
Total | 28 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(neigh_rand_reach_time);
static bool neigh_del(struct neighbour *n, __u8 state,
struct neighbour __rcu **np, struct neigh_table *tbl)
{
bool retval = false;
write_lock(&n->lock);
if (refcount_read(&n->refcnt) == 1 && !(n->nud_state & state)) {
struct neighbour *neigh;
neigh = rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock));
rcu_assign_pointer(*np, neigh);
n->dead = 1;
retval = true;
}
write_unlock(&n->lock);
if (retval)
neigh_cleanup_and_release(n);
return retval;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Sowmini Varadhan | 121 | 99.18% | 1 | 50.00% |
Elena Reshetova | 1 | 0.82% | 1 | 50.00% |
Total | 122 | 100.00% | 2 | 100.00% |
bool neigh_remove_one(struct neighbour *ndel, struct neigh_table *tbl)
{
struct neigh_hash_table *nht;
void *pkey = ndel->primary_key;
u32 hash_val;
struct neighbour *n;
struct neighbour __rcu **np;
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
hash_val = tbl->hash(pkey, ndel->dev, nht->hash_rnd);
hash_val = hash_val >> (32 - nht->hash_shift);
np = &nht->hash_buckets[hash_val];
while ((n = rcu_dereference_protected(*np,
lockdep_is_held(&tbl->lock)))) {
if (n == ndel)
return neigh_del(n, 0, np, tbl);
np = &n->next;
}
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Sowmini Varadhan | 149 | 100.00% | 1 | 100.00% |
Total | 149 | 100.00% | 1 | 100.00% |
static int neigh_forced_gc(struct neigh_table *tbl)
{
int shrunk = 0;
int i;
struct neigh_hash_table *nht;
NEIGH_CACHE_STAT_INC(tbl, forced_gc_runs);
write_lock_bh(&tbl->lock);
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
for (i = 0; i < (1 << nht->hash_shift); i++) {
struct neighbour *n;
struct neighbour __rcu **np;
np = &nht->hash_buckets[i];
while ((n = rcu_dereference_protected(*np,
lockdep_is_held(&tbl->lock))) != NULL) {
/* Neighbour record may be discarded if:
* - nobody refers to it.
* - it is not permanent
*/
if (neigh_del(n, NUD_PERMANENT, np, tbl)) {
shrunk = 1;
continue;
}
np = &n->next;
}
}
tbl->last_flush = jiffies;
write_unlock_bh(&tbl->lock);
return shrunk;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 90 | 53.57% | 3 | 27.27% |
Eric Dumazet | 43 | 25.60% | 2 | 18.18% |
David S. Miller | 30 | 17.86% | 5 | 45.45% |
Sowmini Varadhan | 5 | 2.98% | 1 | 9.09% |
Total | 168 | 100.00% | 11 | 100.00% |
static void neigh_add_timer(struct neighbour *n, unsigned long when)
{
neigh_hold(n);
if (unlikely(mod_timer(&n->timer, when))) {
printk("NEIGH: BUG, double timer add, state is %x\n",
n->nud_state);
dump_stack();
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Pavel Emelyanov | 49 | 100.00% | 1 | 100.00% |
Total | 49 | 100.00% | 1 | 100.00% |
static int neigh_del_timer(struct neighbour *n)
{
if ((n->nud_state & NUD_IN_TIMER) &&
del_timer(&n->timer)) {
neigh_release(n);
return 1;
}
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 39 | 92.86% | 1 | 50.00% |
Arnaldo Carvalho de Melo | 3 | 7.14% | 1 | 50.00% |
Total | 42 | 100.00% | 2 | 100.00% |
static void pneigh_queue_purge(struct sk_buff_head *list)
{
struct sk_buff *skb;
while ((skb = skb_dequeue(list)) != NULL) {
dev_put(skb->dev);
kfree_skb(skb);
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 43 | 100.00% | 1 | 100.00% |
Total | 43 | 100.00% | 1 | 100.00% |
static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev)
{
int i;
struct neigh_hash_table *nht;
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
for (i = 0; i < (1 << nht->hash_shift); i++) {
struct neighbour *n;
struct neighbour __rcu **np = &nht->hash_buckets[i];
while ((n = rcu_dereference_protected(*np,
lockdep_is_held(&tbl->lock))) != NULL) {
if (dev && n->dev != dev) {
np = &n->next;
continue;
}
rcu_assign_pointer(*np,
rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock)));
write_lock(&n->lock);
neigh_del_timer(n);
n->dead = 1;
if (refcount_read(&n->refcnt) != 1) {
/* The most unpleasant situation.
We must destroy neighbour entry,
but someone still uses it.
The destroy will be delayed until
the last user releases us, but
we must kill timers etc. and move
it to safe state.
*/
__skb_queue_purge(&n->arp_queue);
n->arp_queue_len_bytes = 0;
n->output = neigh_blackhole;
if (n->nud_state & NUD_VALID)
n->nud_state = NUD_NOARP;
else
n->nud_state = NUD_NONE;
neigh_dbg(2, "neigh %p is stray\n", n);
}
write_unlock(&n->lock);
neigh_cleanup_and_release(n);
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 149 | 61.07% | 4 | 25.00% |
Eric Dumazet | 61 | 25.00% | 4 | 25.00% |
Tommi Virtanen | 16 | 6.56% | 1 | 6.25% |
David S. Miller | 7 | 2.87% | 2 | 12.50% |
Joe Perches | 4 | 1.64% | 1 | 6.25% |
Herbert Xu | 3 | 1.23% | 1 | 6.25% |
Arnaldo Carvalho de Melo | 2 | 0.82% | 1 | 6.25% |
Elena Reshetova | 1 | 0.41% | 1 | 6.25% |
Thomas Graf | 1 | 0.41% | 1 | 6.25% |
Total | 244 | 100.00% | 16 | 100.00% |
void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev)
{
write_lock_bh(&tbl->lock);
neigh_flush_dev(tbl, dev);
write_unlock_bh(&tbl->lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Herbert Xu | 38 | 100.00% | 1 | 100.00% |
Total | 38 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(neigh_changeaddr);
int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
{
write_lock_bh(&tbl->lock);
neigh_flush_dev(tbl, dev);
pneigh_ifdown(tbl, dev);
write_unlock_bh(&tbl->lock);
del_timer_sync(&tbl->proxy_timer);
pneigh_queue_purge(&tbl->proxy_queue);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 35 | 54.69% | 6 | 85.71% |
Herbert Xu | 29 | 45.31% | 1 | 14.29% |
Total | 64 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(neigh_ifdown);
static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device *dev)
{
struct neighbour *n = NULL;
unsigned long now = jiffies;
int entries;
entries = atomic_inc_return(&tbl->entries) - 1;
if (entries >= tbl->gc_thresh3 ||
(entries >= tbl->gc_thresh2 &&
time_after(now, tbl->last_flush + 5 * HZ))) {
if (!neigh_forced_gc(tbl) &&
entries >= tbl->gc_thresh3) {
net_info_ratelimited("%s: neighbor table overflow!\n",
tbl->id);
NEIGH_CACHE_STAT_INC(tbl, table_fulls);
goto out_entries;
}
}
n = kzalloc(tbl->entry_size + dev->neigh_priv_len, GFP_ATOMIC);
if (!n)
goto out_entries;
__skb_queue_head_init(&n->arp_queue);
rwlock_init(&n->lock);
seqlock_init(&n->ha_lock);
n->updated = n->used = now;
n->nud_state = NUD_NONE;
n->output = neigh_blackhole;
seqlock_init(&n->hh.hh_lock);
n->parms = neigh_parms_clone(&tbl->parms);
setup_timer(&n->timer, neigh_timer_handler, (unsigned long)n);
NEIGH_CACHE_STAT_INC(tbl, allocs);
n->tbl = tbl;
refcount_set(&n->refcnt, 1);
n->dead = 1;
out:
return n;
out_entries:
atomic_dec(&tbl->entries);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 150 | 56.39% | 5 | 26.32% |
Herbert Xu | 36 | 13.53% | 2 | 10.53% |
David S. Miller | 29 | 10.90% | 4 | 21.05% |
Rick Jones | 18 | 6.77% | 1 | 5.26% |
Arnaldo Carvalho de Melo | 10 | 3.76% | 1 | 5.26% |
Eric Dumazet | 9 | 3.38% | 2 | 10.53% |
Hideaki Yoshifuji / 吉藤英明 | 5 | 1.88% | 1 | 5.26% |
Andrew Morton | 4 | 1.50% | 1 | 5.26% |
Pavel Emelyanov | 4 | 1.50% | 1 | 5.26% |
Elena Reshetova | 1 | 0.38% | 1 | 5.26% |
Total | 266 | 100.00% | 19 | 100.00% |
static void neigh_get_hash_rnd(u32 *x)
{
*x = get_random_u32() | 1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 14 | 77.78% | 1 | 50.00% |
Jason A. Donenfeld | 4 | 22.22% | 1 | 50.00% |
Total | 18 | 100.00% | 2 | 100.00% |
static struct neigh_hash_table *neigh_hash_alloc(unsigned int shift)
{
size_t size = (1 << shift) * sizeof(struct neighbour *);
struct neigh_hash_table *ret;
struct neighbour __rcu **buckets;
int i;
ret = kmalloc(sizeof(*ret), GFP_ATOMIC);
if (!ret)
return NULL;
if (size <= PAGE_SIZE)
buckets = kzalloc(size, GFP_ATOMIC);
else
buckets = (struct neighbour __rcu **)
__get_free_pages(GFP_ATOMIC | __GFP_ZERO,
get_order(size));
if (!buckets) {
kfree(ret);
return NULL;
}
ret->hash_buckets = buckets;
ret->hash_shift = shift;
for (i = 0; i < NEIGH_NUM_HASH_RND; i++)
neigh_get_hash_rnd(&ret->hash_rnd[i]);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 88 | 56.77% | 4 | 57.14% |
Eric Dumazet | 64 | 41.29% | 2 | 28.57% |
Andrew Morton | 3 | 1.94% | 1 | 14.29% |
Total | 155 | 100.00% | 7 | 100.00% |
static void neigh_hash_free_rcu(struct rcu_head *head)
{
struct neigh_hash_table *nht = container_of(head,
struct neigh_hash_table,
rcu);
size_t size = (1 << nht->hash_shift) * sizeof(struct neighbour *);
struct neighbour __rcu **buckets = nht->hash_buckets;
if (size <= PAGE_SIZE)
kfree(buckets);
else
free_pages((unsigned long)buckets, get_order(size));
kfree(nht);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 45 | 52.33% | 2 | 50.00% |
Eric Dumazet | 41 | 47.67% | 2 | 50.00% |
Total | 86 | 100.00% | 4 | 100.00% |
static struct neigh_hash_table *neigh_hash_grow(struct neigh_table *tbl,
unsigned long new_shift)
{
unsigned int i, hash;
struct neigh_hash_table *new_nht, *old_nht;
NEIGH_CACHE_STAT_INC(tbl, hash_grows);
old_nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
new_nht = neigh_hash_alloc(new_shift);
if (!new_nht)
return old_nht;
for (i = 0; i < (1 << old_nht->hash_shift); i++) {
struct neighbour *n, *next;
for (n = rcu_dereference_protected(old_nht->hash_buckets[i],
lockdep_is_held(&tbl->lock));
n != NULL;
n = next) {
hash = tbl->hash(n->primary_key, n->dev,
new_nht->hash_rnd);
hash >>= (32 - new_nht->hash_shift);
next = rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock));
rcu_assign_pointer(n->next,
rcu_dereference_protected(
new_nht->hash_buckets[hash],
lockdep_is_held(&tbl->lock)));
rcu_assign_pointer(new_nht->hash_buckets[hash], n);
}
}
rcu_assign_pointer(tbl->nht, new_nht);
call_rcu(&old_nht->rcu, neigh_hash_free_rcu);
return new_nht;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 124 | 52.54% | 4 | 66.67% |
Eric Dumazet | 112 | 47.46% | 2 | 33.33% |
Total | 236 | 100.00% | 6 | 100.00% |
struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey,
struct net_device *dev)
{
struct neighbour *n;
NEIGH_CACHE_STAT_INC(tbl, lookups);
rcu_read_lock_bh();
n = __neigh_lookup_noref(tbl, pkey, dev);
if (n) {
if (!refcount_inc_not_zero(&n->refcnt))
n = NULL;
NEIGH_CACHE_STAT_INC(tbl, hits);
}
rcu_read_unlock_bh();
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 42 | 51.22% | 4 | 40.00% |
Eric Dumazet | 19 | 23.17% | 2 | 20.00% |
David S. Miller | 14 | 17.07% | 1 | 10.00% |
Pavel Emelyanov | 3 | 3.66% | 1 | 10.00% |
Eric W. Biedermann | 3 | 3.66% | 1 | 10.00% |
Elena Reshetova | 1 | 1.22% | 1 | 10.00% |
Total | 82 | 100.00% | 10 | 100.00% |
EXPORT_SYMBOL(neigh_lookup);
struct neighbour *neigh_lookup_nodev(struct neigh_table *tbl, struct net *net,
const void *pkey)
{
struct neighbour *n;
int key_len = tbl->key_len;
u32 hash_val;
struct neigh_hash_table *nht;
NEIGH_CACHE_STAT_INC(tbl, lookups);
rcu_read_lock_bh();
nht = rcu_dereference_bh(tbl->nht);
hash_val = tbl->hash(pkey, NULL, nht->hash_rnd) >> (32 - nht->hash_shift);
for (n = rcu_dereference_bh(nht->hash_buckets[hash_val]);
n != NULL;
n = rcu_dereference_bh(n->next)) {
if (!memcmp(n->primary_key, pkey, key_len) &&
net_eq(dev_net(n->dev), net)) {
if (!refcount_inc_not_zero(&n->refcnt))
n = NULL;
NEIGH_CACHE_STAT_INC(tbl, hits);
break;
}
}
rcu_read_unlock_bh();
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 101 | 59.41% | 3 | 30.00% |
Eric Dumazet | 42 | 24.71% | 2 | 20.00% |
Eric W. Biedermann | 9 | 5.29% | 1 | 10.00% |
Pavel Emelyanov | 9 | 5.29% | 1 | 10.00% |
Hideaki Yoshifuji / 吉藤英明 | 8 | 4.71% | 2 | 20.00% |
Elena Reshetova | 1 | 0.59% | 1 | 10.00% |
Total | 170 | 100.00% | 10 | 100.00% |
EXPORT_SYMBOL(neigh_lookup_nodev);
struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
struct net_device *dev, bool want_ref)
{
u32 hash_val;
int key_len = tbl->key_len;
int error;
struct neighbour *n1, *rc, *n = neigh_alloc(tbl, dev);
struct neigh_hash_table *nht;
if (!n) {
rc = ERR_PTR(-ENOBUFS);
goto out;
}
memcpy(n->primary_key, pkey, key_len);
n->dev = dev;
dev_hold(dev);
/* Protocol specific setup. */
if (tbl->constructor && (error = tbl->constructor(n)) < 0) {
rc = ERR_PTR(error);
goto out_neigh_release;
}
if (dev->netdev_ops->ndo_neigh_construct) {
error = dev->netdev_ops->ndo_neigh_construct(dev, n);
if (error < 0) {
rc = ERR_PTR(error);
goto out_neigh_release;
}
}
/* Device specific setup. */
if (n->parms->neigh_setup &&
(error = n->parms->neigh_setup(n)) < 0) {
rc = ERR_PTR(error);
goto out_neigh_release;
}
n->confirmed = jiffies - (NEIGH_VAR(n->parms, BASE_REACHABLE_TIME) << 1);
write_lock_bh(&tbl->lock);
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
if (atomic_read(&tbl->entries) > (1 << nht->hash_shift))
nht = neigh_hash_grow(tbl, nht->hash_shift + 1);
hash_val = tbl->hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
if (n->parms->dead) {
rc = ERR_PTR(-EINVAL);
goto out_tbl_unlock;
}
for (n1 = rcu_dereference_protected(nht->hash_buckets[hash_val],
lockdep_is_held(&tbl->lock));
n1 != NULL;
n1 = rcu_dereference_protected(n1->next,
lockdep_is_held(&tbl->lock))) {
if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) {
if (want_ref)
neigh_hold(n1);
rc = n1;
goto out_tbl_unlock;
}
}
n->dead = 0;
if (want_ref)
neigh_hold(n);
rcu_assign_pointer(n->next,
rcu_dereference_protected(nht->hash_buckets[hash_val],
lockdep_is_held(&tbl->lock)));
rcu_assign_pointer(nht->hash_buckets[hash_val], n);
write_unlock_bh(&tbl->lock);
neigh_dbg(2, "neigh %p is created\n", n);
rc = n;
out:
return rc;
out_tbl_unlock:
write_unlock_bh(&tbl->lock);
out_neigh_release:
neigh_release(n);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 200 | 39.22% | 6 | 27.27% |
David S. Miller | 108 | 21.18% | 7 | 31.82% |
Eric Dumazet | 87 | 17.06% | 2 | 9.09% |
Herbert Xu | 55 | 10.78% | 3 | 13.64% |
Arnaldo Carvalho de Melo | 49 | 9.61% | 1 | 4.55% |
Jiri Pirko | 7 | 1.37% | 2 | 9.09% |
Joe Perches | 4 | 0.78% | 1 | 4.55% |
Total | 510 | 100.00% | 22 | 100.00% |
EXPORT_SYMBOL(__neigh_create);
static u32 pneigh_hash(const void *pkey, int key_len)
{
u32 hash_val = *(u32 *)(pkey + key_len - 4);
hash_val ^= (hash_val >> 16);
hash_val ^= hash_val >> 8;
hash_val ^= hash_val >> 4;
hash_val &= PNEIGH_HASHMASK;
return hash_val;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Pavel Emelyanov | 49 | 85.96% | 1 | 50.00% |
Hideaki Yoshifuji / 吉藤英明 | 8 | 14.04% | 1 | 50.00% |
Total | 57 | 100.00% | 2 | 100.00% |
static struct pneigh_entry *__pneigh_lookup_1(struct pneigh_entry *n,
struct net *net,
const void *pkey,
int key_len,
struct net_device *dev)
{
while (n) {
if (!memcmp(n->key, pkey, key_len) &&
net_eq(pneigh_net(n), net) &&
(n->dev == dev || !n->dev))
return n;
n = n->next;
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Hideaki Yoshifuji / 吉藤英明 | 47 | 54.65% | 1 | 33.33% |
Pavel Emelyanov | 36 | 41.86% | 1 | 33.33% |
David S. Miller | 3 | 3.49% | 1 | 33.33% |
Total | 86 | 100.00% | 3 | 100.00% |
struct pneigh_entry *__pneigh_lookup(struct neigh_table *tbl,
struct net *net, const void *pkey, struct net_device *dev)
{
int key_len = tbl->key_len;
u32 hash_val = pneigh_hash(pkey, key_len);
return __pneigh_lookup_1(tbl->phash_buckets[hash_val],
net, pkey, key_len, dev);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Hideaki Yoshifuji / 吉藤英明 | 62 | 98.41% | 1 | 50.00% |
Pavel Emelyanov | 1 | 1.59% | 1 | 50.00% |
Total | 63 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(__pneigh_lookup);
struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl,
struct net *net, const void *pkey,
struct net_device *dev, int creat)
{
struct pneigh_entry *n;
int key_len = tbl->key_len;
u32 hash_val = pneigh_hash(pkey, key_len);
read_lock_bh(&tbl->lock);
n = __pneigh_lookup_1(tbl->phash_buckets[hash_val],
net, pkey, key_len, dev);
read_unlock_bh(&tbl->lock);
if (n || !creat)
goto out;
ASSERT_RTNL();
n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
if (!n)
goto out;
write_pnet(&n->net, net);
memcpy(n->key, pkey, key_len);
n->dev = dev;
if (dev)
dev_hold(dev);
if (tbl->pconstructor && tbl->pconstructor(n)) {
if (dev)
dev_put(dev);
kfree(n);
n = NULL;
goto out;
}
write_lock_bh(&tbl->lock);
n->next = tbl->phash_buckets[hash_val];
tbl->phash_buckets[hash_val] = n;
write_unlock_bh(&tbl->lock);
out:
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 172 | 72.57% | 4 | 36.36% |
Hideaki Yoshifuji / 吉藤英明 | 29 | 12.24% | 3 | 27.27% |
Arnaldo Carvalho de Melo | 18 | 7.59% | 1 | 9.09% |
Eric W. Biedermann | 11 | 4.64% | 1 | 9.09% |
Eric Dumazet | 4 | 1.69% | 1 | 9.09% |
Pavel Emelyanov | 3 | 1.27% | 1 | 9.09% |
Total | 237 | 100.00% | 11 | 100.00% |
EXPORT_SYMBOL(pneigh_lookup);
int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey,
struct net_device *dev)
{
struct pneigh_entry *n, **np;
int key_len = tbl->key_len;
u32 hash_val = pneigh_hash(pkey, key_len);
write_lock_bh(&tbl->lock);
for (np = &tbl->phash_buckets[hash_val]; (n = *np) != NULL;
np = &n->next) {
if (!memcmp(n->key, pkey, key_len) && n->dev == dev &&
net_eq(pneigh_net(n), net)) {
*np = n->next;
write_unlock_bh(&tbl->lock);
if (tbl->pdestructor)
tbl->pdestructor(n);
if (n->dev)
dev_put(n->dev);
kfree(n);
return 0;
}
}
write_unlock_bh(&tbl->lock);
return -ENOENT;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 130 | 71.43% | 4 | 36.36% |
Hideaki Yoshifuji / 吉藤英明 | 24 | 13.19% | 4 | 36.36% |
David S. Miller | 16 | 8.79% | 1 | 9.09% |
Eric W. Biedermann | 8 | 4.40% | 1 | 9.09% |
Arnaldo Carvalho de Melo | 4 | 2.20% | 1 | 9.09% |
Total | 182 | 100.00% | 11 | 100.00% |
static int pneigh_ifdown(struct neigh_table *tbl, struct net_device *dev)
{
struct pneigh_entry *n, **np;
u32 h;
for (h = 0; h <= PNEIGH_HASHMASK; h++) {
np = &tbl->phash_buckets[h];
while ((n = *np) != NULL) {
if (!dev || n->dev == dev) {
*np = n->next;
if (tbl->pdestructor)
tbl->pdestructor(n);
if (n->dev)
dev_put(n->dev);
kfree(n);
continue;
}
np = &n->next;
}
}
return -ENOENT;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 113 | 87.60% | 3 | 60.00% |
Hideaki Yoshifuji / 吉藤英明 | 13 | 10.08% | 1 | 20.00% |
Arnaldo Carvalho de Melo | 3 | 2.33% | 1 | 20.00% |
Total | 129 | 100.00% | 5 | 100.00% |
static void neigh_parms_destroy(struct neigh_parms *parms);
static inline void neigh_parms_put(struct neigh_parms *parms)
{
if (refcount_dec_and_test(&parms->refcnt))
neigh_parms_destroy(parms);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Denis V. Lunev | 26 | 96.30% | 1 | 50.00% |
Elena Reshetova | 1 | 3.70% | 1 | 50.00% |
Total | 27 | 100.00% | 2 | 100.00% |
/*
* neighbour must already be out of the table;
*
*/
void neigh_destroy(struct neighbour *neigh)
{
struct net_device *dev = neigh->dev;
NEIGH_CACHE_STAT_INC(neigh->tbl, destroys);
if (!neigh->dead) {
pr_warn("Destroying alive neighbour %p\n", neigh);
dump_stack();
return;
}
if (neigh_del_timer(neigh))
pr_warn("Impossible event\n");
write_lock_bh(&neigh->lock);
__skb_queue_purge(&neigh->arp_queue);
write_unlock_bh(&neigh->lock);
neigh->arp_queue_len_bytes = 0;
if (dev->netdev_ops->ndo_neigh_destroy)
dev->netdev_ops->ndo_neigh_destroy(dev, neigh);
dev_put(dev);
neigh_parms_put(neigh->parms);
neigh_dbg(2, "neigh %p is destroyed\n", neigh);
atomic_dec(&neigh->tbl->entries);
kfree_rcu(neigh, rcu);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 61 | 41.50% | 2 | 13.33% |
David S. Miller | 43 | 29.25% | 6 | 40.00% |
Eric Dumazet | 23 | 15.65% | 2 | 13.33% |
Herbert Xu | 11 | 7.48% | 2 | 13.33% |
Joe Perches | 7 | 4.76% | 2 | 13.33% |
Jiri Pirko | 2 | 1.36% | 1 | 6.67% |
Total | 147 | 100.00% | 15 | 100.00% |
EXPORT_SYMBOL(neigh_destroy);
/* Neighbour state is suspicious;
disable fast path.
Called with write_locked neigh.
*/
static void neigh_suspect(struct neighbour *neigh)
{
neigh_dbg(2, "neigh %p is suspected\n", neigh);
neigh->output = neigh->ops->output;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 26 | 86.67% | 1 | 50.00% |
Joe Perches | 4 | 13.33% | 1 | 50.00% |
Total | 30 | 100.00% | 2 | 100.00% |
/* Neighbour state is OK;
enable fast path.
Called with write_locked neigh.
*/
static void neigh_connect(struct neighbour *neigh)
{
neigh_dbg(2, "neigh %p is connected\n", neigh);
neigh->output = neigh->ops->connected_output;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 26 | 86.67% | 1 | 50.00% |
Joe Perches | 4 | 13.33% | 1 | 50.00% |
Total | 30 | 100.00% | 2 | 100.00% |
static void neigh_periodic_work(struct work_struct *work)
{
struct neigh_table *tbl = container_of(work, struct neigh_table, gc_work.work);
struct neighbour *n;
struct neighbour __rcu **np;
unsigned int i;
struct neigh_hash_table *nht;
NEIGH_CACHE_STAT_INC(tbl, periodic_gc_runs);
write_lock_bh(&tbl->lock);
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
/*
* periodically recompute ReachableTime from random function
*/
if (time_after(jiffies, tbl->last_rand + 300 * HZ)) {
struct neigh_parms *p;
tbl->last_rand = jiffies;
list_for_each_entry(p, &tbl->parms_list, list)
p->reachable_time =
neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
}
if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
goto out;
for (i = 0 ; i < (1 << nht->hash_shift); i++) {
np = &nht->hash_buckets[i];
while ((n = rcu_dereference_protected(*np,
lockdep_is_held(&tbl->lock))) != NULL) {
unsigned int state;
write_lock(&n->lock);
state = n->nud_state;
if (state & (NUD_PERMANENT | NUD_IN_TIMER)) {
write_unlock(&n->lock);
goto next_elt;
}
if (time_before(n->used, n->confirmed))
n->used = n->confirmed;
if (refcount_read(&n->refcnt) == 1 &&
(state == NUD_FAILED ||
time_after(jiffies, n->used + NEIGH_VAR(n->parms, GC_STALETIME)))) {
*np = n->next;
n->dead = 1;
write_unlock(&n->lock);
neigh_cleanup_and_release(n);
continue;
}
write_unlock(&n->lock);
next_elt:
np = &n->next;
}
/*
* It's fine to release lock here, even if hash table
* grows while we are preempted.
*/
write_unlock_bh(&tbl->lock);
cond_resched();
write_lock_bh(&tbl->lock);
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
}
out:
/* Cycle through all hash buckets every BASE_REACHABLE_TIME/2 ticks.
* ARP entry timeouts range from 1/2 BASE_REACHABLE_TIME to 3/2
* BASE_REACHABLE_TIME.
*/
queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
NEIGH_VAR(&tbl->parms, BASE_REACHABLE_TIME) >> 1);
write_unlock_bh(&tbl->lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 216 | 51.67% | 5 | 22.73% |
Eric Dumazet | 91 | 21.77% | 3 | 13.64% |
David S. Miller | 26 | 6.22% | 3 | 13.64% |
Michel Machado | 17 | 4.07% | 1 | 4.55% |
Jiri Pirko | 17 | 4.07% | 1 | 4.55% |
Duan Jiong | 17 | 4.07% | 1 | 4.55% |
Hideaki Yoshifuji / 吉藤英明 | 14 | 3.35% | 2 | 9.09% |
Nicolas Dichtel | 8 | 1.91% | 1 | 4.55% |
Arjan van de Ven | 6 | 1.44% | 1 | 4.55% |
Viresh Kumar | 3 | 0.72% | 1 | 4.55% |
Thomas Graf | 1 | 0.24% | 1 | 4.55% |
Alan Cox | 1 | 0.24% | 1 | 4.55% |
Elena Reshetova | 1 | 0.24% | 1 | 4.55% |
Total | 418 | 100.00% | 22 | 100.00% |
static __inline__ int neigh_max_probes(struct neighbour *n)
{
struct neigh_parms *p = n->parms;
return NEIGH_VAR(p, UCAST_PROBES) + NEIGH_VAR(p, APP_PROBES) +
(n->nud_state & NUD_PROBE ? NEIGH_VAR(p, MCAST_REPROBES) :
NEIGH_VAR(p, MCAST_PROBES));
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 26 | 44.83% | 1 | 25.00% |
Jiri Pirko | 15 | 25.86% | 1 | 25.00% |
Hideaki Yoshifuji/吉藤英明 | 11 | 18.97% | 1 | 25.00% |
Timo Teräs | 6 | 10.34% | 1 | 25.00% |
Total | 58 | 100.00% | 4 | 100.00% |
static void neigh_invalidate(struct neighbour *neigh)
__releases(neigh->lock)
__acquires(neigh->lock)
{
struct sk_buff *skb;
NEIGH_CACHE_STAT_INC(neigh->tbl, res_failed);
neigh_dbg(2, "neigh %p is failed\n", neigh);
neigh->updated = jiffies;
/* It is very thin place. report_unreachable is very complicated
routine. Particularly, it can hit the same neighbour entry!
So that, we try to be accurate and avoid dead loop. --ANK
*/
while (neigh->nud_state == NUD_FAILED &&
(skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
write_unlock(&neigh->lock);
neigh->ops->error_report(neigh, skb);
write_lock(&neigh->lock);
}
__skb_queue_purge(&neigh->arp_queue);
neigh->arp_queue_len_bytes = 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Timo Teräs | 95 | 80.51% | 1 | 20.00% |
Eric Dumazet | 19 | 16.10% | 3 | 60.00% |
Joe Perches | 4 | 3.39% | 1 | 20.00% |
Total | 118 | 100.00% | 5 | 100.00% |
static void neigh_probe(struct neighbour *neigh)
__releases(neigh->lock)
{
struct sk_buff *skb = skb_peek_tail(&neigh->arp_queue);
/* keep skb alive even if arp_queue overflows */
if (skb)
skb = skb_clone(skb, GFP_ATOMIC);
write_unlock(&neigh->lock);
if (neigh->ops->solicit)
neigh->ops->solicit(neigh, skb);
atomic_inc(&neigh->probes);
kfree_skb(skb);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric Dumazet | 82 | 97.62% | 2 | 50.00% |
Hannes Frederic Sowa | 1 | 1.19% | 1 | 25.00% |
Junwei (Martin) Zhang | 1 | 1.19% | 1 | 25.00% |
Total | 84 | 100.00% | 4 | 100.00% |
/* Called when a timer expires for a neighbour entry. */
static void neigh_timer_handler(unsigned long arg)
{
unsigned long now, next;
struct neighbour *neigh = (struct neighbour *)arg;
unsigned int state;
int notify = 0;
write_lock(&neigh->lock);
state = neigh->nud_state;
now = jiffies;
next = now + HZ;
if (!(state & NUD_IN_TIMER))
goto out;
if (state & NUD_REACHABLE) {
if (time_before_eq(now,
neigh->confirmed + neigh->parms->reachable_time)) {
neigh_dbg(2, "neigh %p is still alive\n", neigh);
next = neigh->confirmed + neigh->parms->reachable_time;
} else if (time_before_eq(now,
neigh->used +
NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME))) {
neigh_dbg(2, "neigh %p is delayed\n", neigh);
neigh->nud_state = NUD_DELAY;
neigh->updated = jiffies;
neigh_suspect(neigh);
next = now + NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME);
} else {
neigh_dbg(2, "neigh %p is suspected\n", neigh);
neigh->nud_state = NUD_STALE;
neigh->updated = jiffies;
neigh_suspect(neigh);
notify = 1;
}
} else if (state & NUD_DELAY) {
if (time_before_eq(now,
neigh->confirmed +
NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME))) {
neigh_dbg(2, "neigh %p is now reachable\n", neigh);
neigh->nud_state = NUD_REACHABLE;
neigh->updated = jiffies;
neigh_connect(neigh);
notify = 1;
next = neigh->confirmed + neigh->parms->reachable_time;
} else {
neigh_dbg(2, "neigh %p is probed\n", neigh);
neigh->nud_state = NUD_PROBE;
neigh->updated = jiffies;
atomic_set(&neigh->probes, 0);
notify = 1;
next = now + NEIGH_VAR(neigh->parms, RETRANS_TIME);
}
} else {
/* NUD_PROBE|NUD_INCOMPLETE */
next = now + NEIGH_VAR(neigh->parms, RETRANS_TIME);
}
if ((neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) &&
atomic_read(&neigh->probes) >= neigh_max_probes(neigh)) {
neigh->nud_state = NUD_FAILED;
notify = 1;
neigh_invalidate(neigh);
goto out;
}
if (neigh->nud_state & NUD_IN_TIMER) {
if (time_before(next, jiffies + HZ/2))
next = jiffies + HZ/2;
if (!mod_timer(&neigh->timer, next))
neigh_hold(neigh);
}
if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) {
neigh_probe(neigh);
} else {
out:
write_unlock(&neigh->lock);
}
if (notify)
neigh_update_notify(neigh, 0);
neigh_release(neigh);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Hideaki Yoshifuji / 吉藤英明 | 239 | 47.70% | 3 | 15.00% |
Linus Torvalds (pre-git) | 171 | 34.13% | 3 | 15.00% |
Jiri Pirko | 25 | 4.99% | 1 | 5.00% |
Joe Perches | 20 | 3.99% | 1 | 5.00% |
Herbert Xu | 12 | 2.40% | 1 | 5.00% |
Tom Tucker | 12 | 2.40% | 1 | 5.00% |
David S. Miller | 7 | 1.40% | 2 | 10.00% |
Erik Kline | 4 | 0.80% | 1 | 5.00% |
Duan Jiong | 3 | 0.60% | 1 | 5.00% |
Eric Dumazet | 2 | 0.40% | 2 | 10.00% |
Roopa Prabhu | 2 | 0.40% | 1 | 5.00% |
Greg Banks | 2 | 0.40% | 1 | 5.00% |
Timo Teräs | 1 | 0.20% | 1 | 5.00% |
Thomas Graf | 1 | 0.20% | 1 | 5.00% |
Total | 501 | 100.00% | 20 | 100.00% |
int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
{
int rc;
bool immediate_probe = false;
write_lock_bh(&neigh->lock);
rc = 0;
if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE))
goto out_unlock_bh;
if (neigh->dead)
goto out_dead;
if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) {
if (NEIGH_VAR(neigh->parms, MCAST_PROBES) +
NEIGH_VAR(neigh->parms, APP_PROBES)) {
unsigned long next, now = jiffies;
atomic_set(&neigh->probes,
NEIGH_VAR(neigh->parms, UCAST_PROBES));
neigh->nud_state = NUD_INCOMPLETE;
neigh->updated = now;
next = now + max(NEIGH_VAR(neigh->parms, RETRANS_TIME),
HZ/2);
neigh_add_timer(neigh, next);
immediate_probe = true;
} else {
neigh->nud_state = NUD_FAILED;
neigh->updated = jiffies;
write_unlock_bh(&neigh->lock);
kfree_skb(skb);
return 1;
}
} else if (neigh->nud_state & NUD_STALE) {
neigh_dbg(2, "neigh %p is delayed\n", neigh);
neigh->nud_state = NUD_DELAY;
neigh->updated = jiffies;
neigh_add_timer(neigh, jiffies +
NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME));
}
if (neigh->nud_state == NUD_INCOMPLETE) {
if (skb) {
while (neigh->arp_queue_len_bytes + skb->truesize >
NEIGH_VAR(neigh->parms, QUEUE_LEN_BYTES)) {
struct sk_buff *buff;
buff = __skb_dequeue(&neigh->arp_queue);
if (!buff)
break;
neigh->arp_queue_len_bytes -= buff->truesize;
kfree_skb(buff);
NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards);
}
skb_dst_force(skb);
__skb_queue_tail(&neigh->arp_queue, skb);
neigh->arp_queue_len_bytes += skb->truesize;
}
rc = 1;
}
out_unlock_bh:
if (immediate_probe)
neigh_probe(neigh);
else
write_unlock(&neigh->lock);
local_bh_enable();
return rc;
out_dead:
if (neigh->nud_state & NUD_STALE)
goto out_unlock_bh;
write_unlock_bh(&neigh->lock);
kfree_skb(skb);
return 1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 173 | 42.30% | 3 | 18.75% |
Eric Dumazet | 81 | 19.80% | 3 | 18.75% |
Hideaki Yoshifuji / 吉藤英明 | 50 | 12.22% | 2 | 12.50% |
Julian Anastasov | 38 | 9.29% | 1 | 6.25% |
Jiri Pirko | 30 | 7.33% | 1 | 6.25% |
Arnaldo Carvalho de Melo | 16 | 3.91% | 1 | 6.25% |
Neil Horman | 9 | 2.20% | 1 | 6.25% |
David S. Miller | 7 | 1.71% | 2 | 12.50% |
Joe Perches | 4 | 0.98% | 1 | 6.25% |
Linus Torvalds | 1 | 0.24% | 1 | 6.25% |
Total | 409 | 100.00% | 16 | 100.00% |
EXPORT_SYMBOL(__neigh_event_send);
static void neigh_update_hhs(struct neighbour *neigh)
{
struct hh_cache *hh;
void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
= NULL;
if (neigh->dev->header_ops)
update = neigh->dev->header_ops->cache_update;
if (update) {
hh = &neigh->hh;
if (hh->hh_len) {
write_seqlock_bh(&hh->hh_lock);
update(hh, neigh->dev, neigh->ha);
write_sequnlock_bh(&hh->hh_lock);
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 80 | 74.77% | 3 | 37.50% |
Doug Kehn | 13 | 12.15% | 1 | 12.50% |
David S. Miller | 7 | 6.54% | 2 | 25.00% |
Stephen Hemminger | 7 | 6.54% | 2 | 25.00% |
Total | 107 | 100.00% | 8 | 100.00% |
/* Generic update routine.
-- lladdr is new lladdr or NULL, if it is not supplied.
-- new is new state.
-- flags
NEIGH_UPDATE_F_OVERRIDE allows to override existing lladdr,
if it is different.
NEIGH_UPDATE_F_WEAK_OVERRIDE will suspect existing "connected"
lladdr instead of overriding it
if it is different.
NEIGH_UPDATE_F_ADMIN means that the change is administrative.
NEIGH_UPDATE_F_OVERRIDE_ISROUTER allows to override existing
NTF_ROUTER flag.
NEIGH_UPDATE_F_ISROUTER indicates if the neighbour is known as
a router.
Caller MUST hold reference count on the entry.
*/
int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
u32 flags, u32 nlmsg_pid)
{
u8 old;
int err;
int notify = 0;
struct net_device *dev;
int update_isrouter = 0;
write_lock_bh(&neigh->lock);
dev = neigh->dev;
old = neigh->nud_state;
err = -EPERM;
if (!(flags & NEIGH_UPDATE_F_ADMIN) &&
(old & (NUD_NOARP | NUD_PERMANENT)))
goto out;
if (neigh->dead)
goto out;
if (!(new & NUD_VALID)) {
neigh_del_timer(neigh);
if (old & NUD_CONNECTED)
neigh_suspect(neigh);
neigh->nud_state = new;
err = 0;
notify = old & NUD_VALID;
if ((old & (NUD_INCOMPLETE | NUD_PROBE)) &&
(new & NUD_FAILED)) {
neigh_invalidate(neigh);
notify = 1;
}
goto out;
}
/* Compare new lladdr with cached one */
if (!dev->addr_len) {
/* First case: device needs no address. */
lladdr = neigh->ha;
} else if (lladdr) {
/* The second case: if something is already cached
and a new address is proposed:
- compare new & old
- if they are different, check override flag
*/
if ((old & NUD_VALID) &&
!memcmp(lladdr, neigh->ha, dev->addr_len))
lladdr = neigh->ha;
} else {
/* No address is supplied; if we know something,
use it, otherwise discard the request.
*/
err = -EINVAL;
if (!(old & NUD_VALID))
goto out;
lladdr = neigh->ha;
}
/* If entry was valid and address is not changed,
do not change entry state, if new one is STALE.
*/
err = 0;
update_isrouter = flags & NEIGH_UPDATE_F_OVERRIDE_ISROUTER;
if (old & NUD_VALID) {
if (lladdr != neigh->ha && !(flags & NEIGH_UPDATE_F_OVERRIDE)) {
update_isrouter = 0;
if ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) &&
(old & NUD_CONNECTED)) {
lladdr = neigh->ha;
new = NUD_STALE;
} else
goto out;
} else {
if (lladdr == neigh->ha && new == NUD_STALE &&
!(flags & NEIGH_UPDATE_F_ADMIN))
new = old;
}
}
/* Update timestamps only once we know we will make a change to the
* neighbour entry. Otherwise we risk to move the locktime window with
* noop updates and ignore relevant ARP updates.
*/
if (new != old || lladdr != neigh->ha) {
if (new & NUD_CONNECTED)
neigh->confirmed = jiffies;
neigh->updated = jiffies;
}
if (new != old) {
neigh_del_timer(neigh);
if (new & NUD_PROBE)
atomic_set(&neigh->probes, 0);
if (new & NUD_IN_TIMER)
neigh_add_timer(neigh, (jiffies +
((new & NUD_REACHABLE) ?
neigh->parms->reachable_time :
0)));
neigh->nud_state = new;
notify = 1;
}
if (lladdr != neigh->ha) {
write_seqlock(&neigh->ha_lock);
memcpy(&neigh->ha, lladdr, dev->addr_len);
write_sequnlock(&neigh->ha_lock);
neigh_update_hhs(neigh);
if (!(new & NUD_CONNECTED))
neigh->confirmed = jiffies -
(NEIGH_VAR(neigh->parms, BASE_REACHABLE_TIME) << 1);
notify = 1;
}
if (new == old)
goto out;
if (new & NUD_CONNECTED)
neigh_connect(neigh);
else
neigh_suspect(neigh);
if (!(old & NUD_VALID)) {
struct sk_buff *skb;
/* Again: avoid dead loop if something went wrong */
while (neigh->nud_state & NUD_VALID &&
(skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n2, *n1 = neigh;
write_unlock_bh(&neigh->lock);
rcu_read_lock();
/* Why not just use 'neigh' as-is? The problem is that
* things such as shaper, eql, and sch_teql can end up
* using alternative, different, neigh objects to output
* the packet in the output path. So what we need to do
* here is re-lookup the top-level neigh in the path so
* we can reinject the packet there.
*/
n2 = NULL;
if (dst) {
n2 = dst_neigh_lookup_skb(dst, skb);
if (n2)
n1 = n2;
}
n1->output(n1, skb);
if (n2)
neigh_release(n2);
rcu_read_unlock();
write_lock_bh(&neigh->lock);
}
__skb_queue_purge(&neigh->arp_queue);
neigh->arp_queue_len_bytes = 0;
}
out:
if (update_isrouter) {
neigh->flags = (flags & NEIGH_UPDATE_F_ISROUTER) ?
(neigh->flags | NTF_ROUTER) :
(neigh->flags & ~NTF_ROUTER);
}
write_unlock_bh(&neigh->lock);
if (notify)
neigh_update_notify(neigh, nlmsg_pid);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 400 | 52.77% | 7 | 21.88% |
Hideaki Yoshifuji / 吉藤英明 | 150 | 19.79% | 5 | 15.62% |
David S. Miller | 49 | 6.46% | 4 | 12.50% |
Ihar Hrachyshka | 33 | 4.35% | 1 | 3.12% |
Timo Teräs | 29 | 3.83% | 1 | 3.12% |
Eric Dumazet | 25 | 3.30% | 4 | 12.50% |
Erik Kline | 16 | 2.11% | 1 | 3.12% |
Julian Anastasov | 16 | 2.11% | 2 | 6.25% |
Arnaldo Carvalho de Melo | 11 | 1.45% | 1 | 3.12% |
Tom Tucker | 8 | 1.06% | 1 | 3.12% |
Li RongQing | 6 | 0.79% | 1 | 3.12% |
Jiri Pirko | 5 | 0.66% | 1 | 3.12% |
Roopa Prabhu | 5 | 0.66% | 1 | 3.12% |
Bob Gilligan | 4 | 0.53% | 1 | 3.12% |
Thomas Graf | 1 | 0.13% | 1 | 3.12% |
Total | 758 | 100.00% | 32 | 100.00% |
EXPORT_SYMBOL(neigh_update);
/* Update the neigh to listen temporarily for probe responses, even if it is
* in a NUD_FAILED state. The caller has to hold neigh->lock for writing.
*/
void __neigh_set_probe_once(struct neighbour *neigh)
{
if (neigh->dead)
return;
neigh->updated = jiffies;
if (!(neigh->nud_state & NUD_FAILED))
return;
neigh->nud_state = NUD_INCOMPLETE;
atomic_set(&neigh->probes, neigh_max_probes(neigh));
neigh_add_timer(neigh,
jiffies + NEIGH_VAR(neigh->parms, RETRANS_TIME));
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Benc | 61 | 87.14% | 1 | 33.33% |
Julian Anastasov | 7 | 10.00% | 1 | 33.33% |
Duan Jiong | 2 | 2.86% | 1 | 33.33% |
Total | 70 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(__neigh_set_probe_once);
struct neighbour *neigh_event_ns(struct neigh_table *tbl,
u8 *lladdr, void *saddr,
struct net_device *dev)
{
struct neighbour *neigh = __neigh_lookup(tbl, saddr, dev,
lladdr || !dev->addr_len);
if (neigh)
neigh_update(neigh, lladdr, NUD_STALE,
NEIGH_UPDATE_F_OVERRIDE, 0);
return neigh;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 61 | 92.42% | 2 | 40.00% |
Arnaldo Carvalho de Melo | 2 | 3.03% | 1 | 20.00% |
Roopa Prabhu | 2 | 3.03% | 1 | 20.00% |
Hideaki Yoshifuji / 吉藤英明 | 1 | 1.52% | 1 | 20.00% |
Total | 66 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(neigh_event_ns);
/* called with read_lock_bh(&n->lock); */
static void neigh_hh_init(struct neighbour *n)
{
struct net_device *dev = n->dev;
__be16 prot = n->tbl->protocol;
struct hh_cache *hh = &n->hh;
write_lock_bh(&n->lock);
/* Only one thread can come in here and initialize the
* hh_cache entry.
*/
if (!hh->hh_len)
dev->header_ops->cache(n, hh, prot);
write_unlock_bh(&n->lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 26 | 34.21% | 3 | 30.00% |
Eric Dumazet | 25 | 32.89% | 2 | 20.00% |
Linus Torvalds (pre-git) | 16 | 21.05% | 2 | 20.00% |
Andrew Morton | 3 | 3.95% | 1 | 10.00% |
Stephen Hemminger | 3 | 3.95% | 1 | 10.00% |
Eric W. Biedermann | 3 | 3.95% | 1 | 10.00% |
Total | 76 | 100.00% | 10 | 100.00% |
/* Slow and careful. */
int neigh_resolve_output(struct neighbour *neigh, struct sk_buff *skb)
{
int rc = 0;
if (!neigh_event_send(neigh, skb)) {
int err;
struct net_device *dev = neigh->dev;
unsigned int seq;
if (dev->header_ops->cache && !neigh->hh.hh_len)
neigh_hh_init(neigh);
do {
__skb_pull(skb, skb_network_offset(skb));
seq = read_seqbegin(&neigh->ha_lock);
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
neigh->ha, NULL, skb->len);
} while (read_seqretry(&neigh->ha_lock, seq));
if (err >= 0)
rc = dev_queue_xmit(skb);
else
goto out_kfree_skb;
}
out:
return rc;
out_kfree_skb:
rc = -EINVAL;
kfree_skb(skb);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 94 | 56.29% | 4 | 33.33% |
Eric Dumazet | 25 | 14.97% | 1 | 8.33% |
Arnaldo Carvalho de Melo | 25 | 14.97% | 1 | 8.33% |
ramesh.nagappa@gmail.com | 10 | 5.99% | 1 | 8.33% |
David S. Miller | 9 | 5.39% | 3 | 25.00% |
Stephen Hemminger | 4 | 2.40% | 2 | 16.67% |
Total | 167 | 100.00% | 12 | 100.00% |
EXPORT_SYMBOL(neigh_resolve_output);
/* As fast as possible without hh cache */
int neigh_connected_output(struct neighbour *neigh, struct sk_buff *skb)
{
struct net_device *dev = neigh->dev;
unsigned int seq;
int err;
do {
__skb_pull(skb, skb_network_offset(skb));
seq = read_seqbegin(&neigh->ha_lock);
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
neigh->ha, NULL, skb->len);
} while (read_seqretry(&neigh->ha_lock, seq));
if (err >= 0)
err = dev_queue_xmit(skb);
else {
err = -EINVAL;
kfree_skb(skb);
}
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 78 | 63.93% | 4 | 36.36% |
Eric Dumazet | 17 | 13.93% | 1 | 9.09% |
Arnaldo Carvalho de Melo | 15 | 12.30% | 2 | 18.18% |
David S. Miller | 9 | 7.38% | 2 | 18.18% |
ramesh.nagappa@gmail.com | 2 | 1.64% | 1 | 9.09% |
Stephen Hemminger | 1 | 0.82% | 1 | 9.09% |
Total | 122 | 100.00% | 11 | 100.00% |
EXPORT_SYMBOL(neigh_connected_output);
int neigh_direct_output(struct neighbour *neigh, struct sk_buff *skb)
{
return dev_queue_xmit(skb);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 21 | 100.00% | 1 | 100.00% |
Total | 21 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(neigh_direct_output);
static void neigh_proxy_process(unsigned long arg)
{
struct neigh_table *tbl = (struct neigh_table *)arg;
long sched_next = 0;
unsigned long now = jiffies;
struct sk_buff *skb, *n;
spin_lock(&tbl->proxy_queue.lock);
skb_queue_walk_safe(&tbl->proxy_queue, skb, n) {
long tdif = NEIGH_CB(skb)->sched_next - now;
if (tdif <= 0) {
struct net_device *dev = skb->dev;
__skb_unlink(skb, &tbl->proxy_queue);
if (tbl->proxy_redo && netif_running(dev)) {
rcu_read_lock();
tbl->proxy_redo(skb);
rcu_read_unlock();
} else {
kfree_skb(skb);
}
dev_put(dev);
} else if (!sched_next || tdif < sched_next)
sched_next = tdif;
}
del_timer(&tbl->proxy_timer);
if (sched_next)
mod_timer(&tbl->proxy_timer, jiffies + sched_next);
spin_unlock(&tbl->proxy_queue.lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 157 | 83.96% | 3 | 50.00% |
David S. Miller | 16 | 8.56% | 1 | 16.67% |
Eric Dumazet | 10 | 5.35% | 1 | 16.67% |
Patrick McHardy | 4 | 2.14% | 1 | 16.67% |
Total | 187 | 100.00% | 6 | 100.00% |
void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
struct sk_buff *skb)
{
unsigned long now = jiffies;
unsigned long sched_next = now + (prandom_u32() %
NEIGH_VAR(p, PROXY_DELAY));
if (tbl->proxy_queue.qlen > NEIGH_VAR(p, PROXY_QLEN)) {
kfree_skb(skb);
return;
}
NEIGH_CB(skb)->sched_next = sched_next;
NEIGH_CB(skb)->flags |= LOCALLY_ENQUEUED;
spin_lock(&tbl->proxy_queue.lock);
if (del_timer(&tbl->proxy_timer)) {
if (time_before(tbl->proxy_timer.expires, sched_next))
sched_next = tbl->proxy_timer.expires;
}
skb_dst_drop(skb);
dev_hold(skb->dev);
__skb_queue_tail(&tbl->proxy_queue, skb);
mod_timer(&tbl->proxy_timer, sched_next);
spin_unlock(&tbl->proxy_queue.lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 131 | 77.06% | 2 | 28.57% |
Hideaki Yoshifuji / 吉藤英明 | 16 | 9.41% | 1 | 14.29% |
Patrick McHardy | 11 | 6.47% | 1 | 14.29% |
Jiri Pirko | 10 | 5.88% | 1 | 14.29% |
Aruna-Hewapathirane | 1 | 0.59% | 1 | 14.29% |
Eric Dumazet | 1 | 0.59% | 1 | 14.29% |
Total | 170 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(pneigh_enqueue);
static inline struct neigh_parms *lookup_neigh_parms(struct neigh_table *tbl,
struct net *net, int ifindex)
{
struct neigh_parms *p;
list_for_each_entry(p, &tbl->parms_list, list) {
if ((p->dev && p->dev->ifindex == ifindex && net_eq(neigh_parms_net(p), net)) ||
(!p->dev && !ifindex && net_eq(net, &init_net)))
return p;
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric W. Biedermann | 60 | 68.97% | 1 | 14.29% |
Nicolas Dichtel | 8 | 9.20% | 1 | 14.29% |
Gao Feng | 8 | 9.20% | 1 | 14.29% |
Hideaki Yoshifuji / 吉藤英明 | 7 | 8.05% | 2 | 28.57% |
Denis V. Lunev | 3 | 3.45% | 1 | 14.29% |
Tobias Klauser | 1 | 1.15% | 1 | 14.29% |
Total | 87 | 100.00% | 7 | 100.00% |
struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
struct neigh_table *tbl)
{
struct neigh_parms *p;
struct net *net = dev_net(dev);
const struct net_device_ops *ops = dev->netdev_ops;
p = kmemdup(&tbl->parms, sizeof(*p), GFP_KERNEL);
if (p) {
p->tbl = tbl;
refcount_set(&p->refcnt, 1);
p->reachable_time =
neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
dev_hold(dev);
p->dev = dev;
write_pnet(&p->net, net);
p->sysctl_table = NULL;
if (ops->ndo_neigh_setup && ops->ndo_neigh_setup(dev, p)) {
dev_put(dev);
kfree(p);
return NULL;
}
write_lock_bh(&tbl->lock);
list_add(&p->list, &tbl->parms.list);
write_unlock_bh(&tbl->lock);
neigh_parms_data_state_cleanall(p);
}
return p;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 76 | 39.58% | 4 | 22.22% |
Veaceslav Falico | 30 | 15.62% | 1 | 5.56% |
Eric W. Biedermann | 17 | 8.85% | 1 | 5.56% |
Stephen Hemminger | 12 | 6.25% | 1 | 5.56% |
Thomas Graf | 11 | 5.73% | 1 | 5.56% |
Jiri Pirko | 10 | 5.21% | 2 | 11.11% |
Herbert Xu | 9 | 4.69% | 1 | 5.56% |
Nicolas Dichtel | 8 | 4.17% | 1 | 5.56% |
Krishna Kumar | 6 | 3.12% | 1 | 5.56% |
Gao Feng | 4 | 2.08% | 1 | 5.56% |
Eric Dumazet | 4 | 2.08% | 1 | 5.56% |
Hideaki Yoshifuji / 吉藤英明 | 3 | 1.56% | 1 | 5.56% |
Arnaldo Carvalho de Melo | 1 | 0.52% | 1 | 5.56% |
Elena Reshetova | 1 | 0.52% | 1 | 5.56% |
Total | 192 | 100.00% | 18 | 100.00% |
EXPORT_SYMBOL(neigh_parms_alloc);
static void neigh_rcu_free_parms(struct rcu_head *head)
{
struct neigh_parms *parms =
container_of(head, struct neigh_parms, rcu_head);
neigh_parms_put(parms);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 30 | 96.77% | 1 | 50.00% |
Herbert Xu | 1 | 3.23% | 1 | 50.00% |
Total | 31 | 100.00% | 2 | 100.00% |
void neigh_parms_release(struct neigh_table *tbl, struct neigh_parms *parms)
{
if (!parms || parms == &tbl->parms)
return;
write_lock_bh(&tbl->lock);
list_del(&parms->list);
parms->dead = 1;
write_unlock_bh(&tbl->lock);
if (parms->dev)
dev_put(parms->dev);
call_rcu(&parms->rcu_head, neigh_rcu_free_parms);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 51 | 62.96% | 3 | 37.50% |
David S. Miller | 19 | 23.46% | 2 | 25.00% |
Herbert Xu | 6 | 7.41% | 1 | 12.50% |
Nicolas Dichtel | 4 | 4.94% | 1 | 12.50% |
Arnaldo Carvalho de Melo | 1 | 1.23% | 1 | 12.50% |
Total | 81 | 100.00% | 8 | 100.00% |
EXPORT_SYMBOL(neigh_parms_release);
static void neigh_parms_destroy(struct neigh_parms *parms)
{
kfree(parms);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Herbert Xu | 15 | 93.75% | 1 | 50.00% |
Denis V. Lunev | 1 | 6.25% | 1 | 50.00% |
Total | 16 | 100.00% | 2 | 100.00% |
static struct lock_class_key neigh_table_proxy_queue_class;
static struct neigh_table *neigh_tables[NEIGH_NR_TABLES] __read_mostly;
void neigh_table_init(int index, struct neigh_table *tbl)
{
unsigned long now = jiffies;
unsigned long phsize;
INIT_LIST_HEAD(&tbl->parms_list);
list_add(&tbl->parms.list, &tbl->parms_list);
write_pnet(&tbl->parms.net, &init_net);
refcount_set(&tbl->parms.refcnt, 1);
tbl->parms.reachable_time =
neigh_rand_reach_time(NEIGH_VAR(&tbl->parms, BASE_REACHABLE_TIME));
tbl->stats = alloc_percpu(struct neigh_statistics);
if (!tbl->stats)
panic("cannot create neighbour cache statistics");
#ifdef CONFIG_PROC_FS
if (!proc_create_data(tbl->id, 0, init_net.proc_net_stat,
&neigh_stat_seq_fops, tbl))
panic("cannot create neighbour proc dir entry");
#endif
RCU_INIT_POINTER(tbl->nht, neigh_hash_alloc(3));
phsize = (PNEIGH_HASHMASK + 1) * sizeof(struct pneigh_entry *);
tbl->phash_buckets = kzalloc(phsize, GFP_KERNEL);
if (!tbl->nht || !tbl->phash_buckets)
panic("cannot allocate neighbour cache hashes");
if (!tbl->entry_size)
tbl->entry_size = ALIGN(offsetof(struct neighbour, primary_key) +
tbl->key_len, NEIGH_PRIV_ALIGN);
else
WARN_ON(tbl->entry_size % NEIGH_PRIV_ALIGN);
rwlock_init(&tbl->lock);
INIT_DEFERRABLE_WORK(&tbl->gc_work, neigh_periodic_work);
queue_delayed_work(system_power_efficient_wq, &tbl->gc_work,
tbl->parms.reachable_time);
setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
skb_queue_head_init_class(&tbl->proxy_queue,
&neigh_table_proxy_queue_class);
tbl->last_flush = now;
tbl->last_rand = now + tbl->parms.reachable_time * 20;
neigh_tables[index] = tbl;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 90 | 27.78% | 4 | 14.29% |
Linus Torvalds (pre-git) | 81 | 25.00% | 1 | 3.57% |
Hideaki Yoshifuji / 吉藤英明 | 38 | 11.73% | 1 | 3.57% |
Nicolas Dichtel | 23 | 7.10% | 1 | 3.57% |
Eric Dumazet | 20 | 6.17% | 4 | 14.29% |
Pavel Emelyanov | 11 | 3.40% | 2 | 7.14% |
Herbert Xu | 11 | 3.40% | 1 | 3.57% |
Eric W. Biedermann | 10 | 3.09% | 2 | 7.14% |
Andrew Morton | 9 | 2.78% | 3 | 10.71% |
Américo Wang | 7 | 2.16% | 1 | 3.57% |
Jiri Pirko | 6 | 1.85% | 1 | 3.57% |
Harald Welte | 4 | 1.23% | 1 | 3.57% |
Wang Chen | 3 | 0.93% | 1 | 3.57% |
Alexey Dobriyan | 3 | 0.93% | 1 | 3.57% |
Denis V. Lunev | 3 | 0.93% | 1 | 3.57% |
Viresh Kumar | 3 | 0.93% | 1 | 3.57% |
Elena Reshetova | 1 | 0.31% | 1 | 3.57% |
Tejun Heo | 1 | 0.31% | 1 | 3.57% |
Total | 324 | 100.00% | 28 | 100.00% |
EXPORT_SYMBOL(neigh_table_init);
int neigh_table_clear(int index, struct neigh_table *tbl)
{
neigh_tables[index] = NULL;
/* It is not clean... Fix it to unload IPv6 module safely */
cancel_delayed_work_sync(&tbl->gc_work);
del_timer_sync(&tbl->proxy_timer);
pneigh_queue_purge(&tbl->proxy_queue);
neigh_ifdown(tbl, NULL);
if (atomic_read(&tbl->entries))
pr_crit("neighbour leakage\n");
call_rcu(&rcu_dereference_protected(tbl->nht, 1)->rcu,
neigh_hash_free_rcu);
tbl->nht = NULL;
kfree(tbl->phash_buckets);
tbl->phash_buckets = NULL;
remove_proc_entry(tbl->id, init_net.proc_net_stat);
free_percpu(tbl->stats);
tbl->stats = NULL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 53 | 40.77% | 3 | 21.43% |
David S. Miller | 24 | 18.46% | 2 | 14.29% |
Eric Dumazet | 13 | 10.00% | 3 | 21.43% |
Kirill Korotaev | 13 | 10.00% | 1 | 7.14% |
Alexey Dobriyan | 11 | 8.46% | 1 | 7.14% |
Américo Wang | 10 | 7.69% | 1 | 7.14% |
Herbert Xu | 4 | 3.08% | 1 | 7.14% |
Joe Perches | 1 | 0.77% | 1 | 7.14% |
Tejun Heo | 1 | 0.77% | 1 | 7.14% |
Total | 130 | 100.00% | 14 | 100.00% |
EXPORT_SYMBOL(neigh_table_clear);
static struct neigh_table *neigh_find_table(int family)
{
struct neigh_table *tbl = NULL;
switch (family) {
case AF_INET:
tbl = neigh_tables[NEIGH_ARP_TABLE];
break;
case AF_INET6:
tbl = neigh_tables[NEIGH_ND_TABLE];
break;
case AF_DECnet:
tbl = neigh_tables[NEIGH_DN_TABLE];
break;
}
return tbl;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 60 | 100.00% | 1 | 100.00% |
Total | 60 | 100.00% | 1 | 100.00% |
static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct ndmsg *ndm;
struct nlattr *dst_attr;
struct neigh_table *tbl;
struct neighbour *neigh;
struct net_device *dev = NULL;
int err = -EINVAL;
ASSERT_RTNL();
if (nlmsg_len(nlh) < sizeof(*ndm))
goto out;
dst_attr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_DST);
if (dst_attr == NULL)
goto out;
ndm = nlmsg_data(nlh);
if (ndm->ndm_ifindex) {
dev = __dev_get_by_index(net, ndm->ndm_ifindex);
if (dev == NULL) {
err = -ENODEV;
goto out;
}
}
tbl = neigh_find_table(ndm->ndm_family);
if (tbl == NULL)
return -EAFNOSUPPORT;
if (nla_len(dst_attr) < tbl->key_len)
goto out;
if (ndm->ndm_flags & NTF_PROXY) {
err = pneigh_delete(tbl, net, nla_data(dst_attr), dev);
goto out;
}
if (dev == NULL)
goto out;
neigh = neigh_lookup(tbl, nla_data(dst_attr), dev);
if (neigh == NULL) {
err = -ENOENT;
goto out;
}
err = neigh_update(neigh, NULL, NUD_FAILED,
NEIGH_UPDATE_F_OVERRIDE |
NEIGH_UPDATE_F_ADMIN,
NETLINK_CB(skb).portid);
write_lock_bh(&tbl->lock);
neigh_release(neigh);
neigh_remove_one(neigh, tbl);
write_unlock_bh(&tbl->lock);
out:
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 130 | 42.35% | 4 | 23.53% |
Thomas Graf | 89 | 28.99% | 3 | 17.65% |
Sowmini Varadhan | 23 | 7.49% | 1 | 5.88% |
Américo Wang | 17 | 5.54% | 1 | 5.88% |
Eric W. Biedermann | 13 | 4.23% | 2 | 11.76% |
Arnaldo Carvalho de Melo | 9 | 2.93% | 1 | 5.88% |
Eric Dumazet | 8 | 2.61% | 1 | 5.88% |
Roopa Prabhu | 7 | 2.28% | 1 | 5.88% |
Hideaki Yoshifuji / 吉藤英明 | 6 | 1.95% | 2 | 11.76% |
David Ahern | 5 | 1.63% | 1 | 5.88% |
Total | 307 | 100.00% | 17 | 100.00% |
static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
int flags = NEIGH_UPDATE_F_ADMIN | NEIGH_UPDATE_F_OVERRIDE;
struct net *net = sock_net(skb->sk);
struct ndmsg *ndm;
struct nlattr *tb[NDA_MAX+1];
struct neigh_table *tbl;
struct net_device *dev = NULL;
struct neighbour *neigh;
void *dst, *lladdr;
int err;
ASSERT_RTNL();
err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack);
if (err < 0)
goto out;
err = -EINVAL;
if (tb[NDA_DST] == NULL)
goto out;
ndm = nlmsg_data(nlh);
if (ndm->ndm_ifindex) {
dev = __dev_get_by_index(net, ndm->ndm_ifindex);
if (dev == NULL) {
err = -ENODEV;
goto out;
}
if (tb[NDA_LLADDR] && nla_len(tb[NDA_LLADDR]) < dev->addr_len)
goto out;
}
tbl = neigh_find_table(ndm->ndm_family);
if (tbl == NULL)
return -EAFNOSUPPORT;
if (nla_len(tb[NDA_DST]) < tbl->key_len)
goto out;
dst = nla_data(tb[NDA_DST]);
lladdr = tb[NDA_LLADDR] ? nla_data(tb[NDA_LLADDR]) : NULL;
if (ndm->ndm_flags & NTF_PROXY) {
struct pneigh_entry *pn;
err = -ENOBUFS;
pn = pneigh_lookup(tbl, net, dst, dev, 1);
if (pn) {
pn->flags = ndm->ndm_flags;
err = 0;
}
goto out;
}
if (dev == NULL)
goto out;
neigh = neigh_lookup(tbl, dst, dev);
if (neigh == NULL) {
if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
err = -ENOENT;
goto out;
}
neigh = __neigh_lookup_errno(tbl, dst, dev);
if (IS_ERR(neigh)) {
err = PTR_ERR(neigh);
goto out;
}
} else {
if (nlh->nlmsg_flags & NLM_F_EXCL) {
err = -EEXIST;
neigh_release(neigh);
goto out;
}
if (!(nlh->nlmsg_flags & NLM_F_REPLACE))
flags &= ~NEIGH_UPDATE_F_OVERRIDE;
}
if (ndm->ndm_flags & NTF_USE) {
neigh_event_send(neigh, NULL);
err = 0;
} else
err = neigh_update(neigh, lladdr, ndm->ndm_state, flags,
NETLINK_CB(skb).portid);
neigh_release(neigh);
out:
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 263 | 53.67% | 4 | 21.05% |
Linus Torvalds (pre-git) | 101 | 20.61% | 4 | 21.05% |
Eric W. Biedermann | 35 | 7.14% | 3 | 15.79% |
Américo Wang | 31 | 6.33% | 1 | 5.26% |
Ville Nuorvala | 24 | 4.90% | 1 | 5.26% |
Eric Dumazet | 11 | 2.24% | 1 | 5.26% |
Arnaldo Carvalho de Melo | 8 | 1.63% | 1 | 5.26% |
Roopa Prabhu | 7 | 1.43% | 1 | 5.26% |
David Ahern | 6 | 1.22% | 1 | 5.26% |
Hideaki Yoshifuji / 吉藤英明 | 3 | 0.61% | 1 | 5.26% |
Johannes Berg | 1 | 0.20% | 1 | 5.26% |
Total | 490 | 100.00% | 19 | 100.00% |
static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
{
struct nlattr *nest;
nest = nla_nest_start(skb, NDTA_PARMS);
if (nest == NULL)
return -ENOBUFS;
if ((parms->dev &&
nla_put_u32(skb, NDTPA_IFINDEX, parms->dev->ifindex)) ||
nla_put_u32(skb, NDTPA_REFCNT, refcount_read(&parms->refcnt)) ||
nla_put_u32(skb, NDTPA_QUEUE_LENBYTES,
NEIGH_VAR(parms, QUEUE_LEN_BYTES)) ||
/* approximative value for deprecated QUEUE_LEN (in packets) */
nla_put_u32(skb, NDTPA_QUEUE_LEN,
NEIGH_VAR(parms, QUEUE_LEN_BYTES) / SKB_TRUESIZE(ETH_FRAME_LEN)) ||
nla_put_u32(skb, NDTPA_PROXY_QLEN, NEIGH_VAR(parms, PROXY_QLEN)) ||
nla_put_u32(skb, NDTPA_APP_PROBES, NEIGH_VAR(parms, APP_PROBES)) ||
nla_put_u32(skb, NDTPA_UCAST_PROBES,
NEIGH_VAR(parms, UCAST_PROBES)) ||
nla_put_u32(skb, NDTPA_MCAST_PROBES,
NEIGH_VAR(parms, MCAST_PROBES)) ||
nla_put_u32(skb, NDTPA_MCAST_REPROBES,
NEIGH_VAR(parms, MCAST_REPROBES)) ||
nla_put_msecs(skb, NDTPA_REACHABLE_TIME, parms->reachable_time,
NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_BASE_REACHABLE_TIME,
NEIGH_VAR(parms, BASE_REACHABLE_TIME), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_GC_STALETIME,
NEIGH_VAR(parms, GC_STALETIME), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_DELAY_PROBE_TIME,
NEIGH_VAR(parms, DELAY_PROBE_TIME), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_RETRANS_TIME,
NEIGH_VAR(parms, RETRANS_TIME), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_ANYCAST_DELAY,
NEIGH_VAR(parms, ANYCAST_DELAY), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_PROXY_DELAY,
NEIGH_VAR(parms, PROXY_DELAY), NDTPA_PAD) ||
nla_put_msecs(skb, NDTPA_LOCKTIME,
NEIGH_VAR(parms, LOCKTIME), NDTPA_PAD))
goto nla_put_failure;
return nla_nest_end(skb, nest);
nla_put_failure:
nla_nest_cancel(skb, nest);
return -EMSGSIZE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 181 | 55.02% | 4 | 36.36% |
Jiri Pirko | 65 | 19.76% | 1 | 9.09% |
David S. Miller | 38 | 11.55% | 1 | 9.09% |
Nicolas Dichtel | 16 | 4.86% | 1 | 9.09% |
Hideaki Yoshifuji/吉藤英明 | 14 | 4.26% | 1 | 9.09% |
Eric Dumazet | 13 | 3.95% | 1 | 9.09% |
Elena Reshetova | 1 | 0.30% | 1 | 9.09% |
Shan Wei | 1 | 0.30% | 1 | 9.09% |
Total | 329 | 100.00% | 11 | 100.00% |
static int neightbl_fill_info(struct sk_buff *skb, struct neigh_table *tbl,
u32 pid, u32 seq, int type, int flags)
{
struct nlmsghdr *nlh;
struct ndtmsg *ndtmsg;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
ndtmsg = nlmsg_data(nlh);
read_lock_bh(&tbl->lock);
ndtmsg->ndtm_family = tbl->family;
ndtmsg->ndtm_pad1 = 0;
ndtmsg->ndtm_pad2 = 0;
if (nla_put_string(skb, NDTA_NAME, tbl->id) ||
nla_put_msecs(skb, NDTA_GC_INTERVAL, tbl->gc_interval, NDTA_PAD) ||
nla_put_u32(skb, NDTA_THRESH1, tbl->gc_thresh1) ||
nla_put_u32(skb, NDTA_THRESH2, tbl->gc_thresh2) ||
nla_put_u32(skb, NDTA_THRESH3, tbl->gc_thresh3))
goto nla_put_failure;
{
unsigned long now = jiffies;
unsigned int flush_delta = now - tbl->last_flush;
unsigned int rand_delta = now - tbl->last_rand;
struct neigh_hash_table *nht;
struct ndt_config ndc = {
.ndtc_key_len = tbl->key_len,
.ndtc_entry_size = tbl->entry_size,
.ndtc_entries = atomic_read(&tbl->entries),
.ndtc_last_flush = jiffies_to_msecs(flush_delta),
.ndtc_last_rand = jiffies_to_msecs(rand_delta),
.ndtc_proxy_qlen = tbl->proxy_queue.qlen,
};
rcu_read_lock_bh();
nht = rcu_dereference_bh(tbl->nht);
ndc.ndtc_hash_rnd = nht->hash_rnd[0];
ndc.ndtc_hash_mask = ((1 << nht->hash_shift) - 1);
rcu_read_unlock_bh();
if (nla_put(skb, NDTA_CONFIG, sizeof(ndc), &ndc))
goto nla_put_failure;
}
{
int cpu;
struct ndt_stats ndst;
memset(&ndst, 0, sizeof(ndst));
for_each_possible_cpu(cpu) {
struct neigh_statistics *st;
st = per_cpu_ptr(tbl->stats, cpu);
ndst.ndts_allocs += st->allocs;
ndst.ndts_destroys += st->destroys;
ndst.ndts_hash_grows += st->hash_grows;
ndst.ndts_res_failed += st->res_failed;
ndst.ndts_lookups += st->lookups;
ndst.ndts_hits += st->hits;
ndst.ndts_rcv_probes_mcast += st->rcv_probes_mcast;
ndst.ndts_rcv_probes_ucast += st->rcv_probes_ucast;
ndst.ndts_periodic_gc_runs += st->periodic_gc_runs;
ndst.ndts_forced_gc_runs += st->forced_gc_runs;
ndst.ndts_table_fulls += st->table_fulls;
}
if (nla_put_64bit(skb, NDTA_STATS, sizeof(ndst), &ndst,
NDTA_PAD))
goto nla_put_failure;
}
BUG_ON(tbl->parms.dev);
if (neightbl_fill_parms(skb, &tbl->parms) < 0)
goto nla_put_failure;
read_unlock_bh(&tbl->lock);
nlmsg_end(skb, nlh);
return 0;
nla_put_failure:
read_unlock_bh(&tbl->lock);
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 426 | 79.48% | 4 | 25.00% |
David S. Miller | 40 | 7.46% | 3 | 18.75% |
Eric Dumazet | 33 | 6.16% | 1 | 6.25% |
Patrick McHardy | 17 | 3.17% | 2 | 12.50% |
Rick Jones | 8 | 1.49% | 1 | 6.25% |
Nicolas Dichtel | 5 | 0.93% | 2 | 12.50% |
Johannes Berg | 3 | 0.56% | 1 | 6.25% |
John Hawkes | 3 | 0.56% | 1 | 6.25% |
Kamezawa Hiroyuki | 1 | 0.19% | 1 | 6.25% |
Total | 536 | 100.00% | 16 | 100.00% |
static int neightbl_fill_param_info(struct sk_buff *skb,
struct neigh_table *tbl,
struct neigh_parms *parms,
u32 pid, u32 seq, int type,
unsigned int flags)
{
struct ndtmsg *ndtmsg;
struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndtmsg), flags);
if (nlh == NULL)
return -EMSGSIZE;
ndtmsg = nlmsg_data(nlh);
read_lock_bh(&tbl->lock);
ndtmsg->ndtm_family = tbl->family;
ndtmsg->ndtm_pad1 = 0;
ndtmsg->ndtm_pad2 = 0;
if (nla_put_string(skb, NDTA_NAME, tbl->id) < 0 ||
neightbl_fill_parms(skb, parms) < 0)
goto errout;
read_unlock_bh(&tbl->lock);
nlmsg_end(skb, nlh);
return 0;
errout:
read_unlock_bh(&tbl->lock);
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 156 | 88.64% | 4 | 57.14% |
Patrick McHardy | 17 | 9.66% | 2 | 28.57% |
Johannes Berg | 3 | 1.70% | 1 | 14.29% |
Total | 176 | 100.00% | 7 | 100.00% |
static const struct nla_policy nl_neightbl_policy[NDTA_MAX+1] = {
[NDTA_NAME] = { .type = NLA_STRING },
[NDTA_THRESH1] = { .type = NLA_U32 },
[NDTA_THRESH2] = { .type = NLA_U32 },
[NDTA_THRESH3] = { .type = NLA_U32 },
[NDTA_GC_INTERVAL] = { .type = NLA_U64 },
[NDTA_PARMS] = { .type = NLA_NESTED },
};
static const struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] = {
[NDTPA_IFINDEX] = { .type = NLA_U32 },
[NDTPA_QUEUE_LEN] = { .type = NLA_U32 },
[NDTPA_PROXY_QLEN] = { .type = NLA_U32 },
[NDTPA_APP_PROBES] = { .type = NLA_U32 },
[NDTPA_UCAST_PROBES] = { .type = NLA_U32 },
[NDTPA_MCAST_PROBES] = { .type = NLA_U32 },
[NDTPA_MCAST_REPROBES] = { .type = NLA_U32 },
[NDTPA_BASE_REACHABLE_TIME] = { .type = NLA_U64 },
[NDTPA_GC_STALETIME] = { .type = NLA_U64 },
[NDTPA_DELAY_PROBE_TIME] = { .type = NLA_U64 },
[NDTPA_RETRANS_TIME] = { .type = NLA_U64 },
[NDTPA_ANYCAST_DELAY] = { .type = NLA_U64 },
[NDTPA_PROXY_DELAY] = { .type = NLA_U64 },
[NDTPA_LOCKTIME] = { .type = NLA_U64 },
};
static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct neigh_table *tbl;
struct ndtmsg *ndtmsg;
struct nlattr *tb[NDTA_MAX+1];
bool found = false;
int err, tidx;
err = nlmsg_parse(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
nl_neightbl_policy, extack);
if (err < 0)
goto errout;
if (tb[NDTA_NAME] == NULL) {
err = -EINVAL;
goto errout;
}
ndtmsg = nlmsg_data(nlh);
for (tidx = 0; tidx < NEIGH_NR_TABLES; tidx++) {
tbl = neigh_tables[tidx];
if (!tbl)
continue;
if (ndtmsg->ndtm_family && tbl->family != ndtmsg->ndtm_family)
continue;
if (nla_strcmp(tb[NDTA_NAME], tbl->id) == 0) {
found = true;
break;
}
}
if (!found)
return -ENOENT;
/*
* We acquire tbl->lock to be nice to the periodic timers and
* make sure they always see a consistent set of values.
*/
write_lock_bh(&tbl->lock);
if (tb[NDTA_PARMS]) {
struct nlattr *tbp[NDTPA_MAX+1];
struct neigh_parms *p;
int i, ifindex = 0;
err = nla_parse_nested(tbp, NDTPA_MAX, tb[NDTA_PARMS],
nl_ntbl_parm_policy, extack);
if (err < 0)
goto errout_tbl_lock;
if (tbp[NDTPA_IFINDEX])
ifindex = nla_get_u32(tbp[NDTPA_IFINDEX]);
p = lookup_neigh_parms(tbl, net, ifindex);
if (p == NULL) {
err = -ENOENT;
goto errout_tbl_lock;
}
for (i = 1; i <= NDTPA_MAX; i++) {
if (tbp[i] == NULL)
continue;
switch (i) {
case NDTPA_QUEUE_LEN:
NEIGH_VAR_SET(p, QUEUE_LEN_BYTES,
nla_get_u32(tbp[i]) *
SKB_TRUESIZE(ETH_FRAME_LEN));
break;
case NDTPA_QUEUE_LENBYTES:
NEIGH_VAR_SET(p, QUEUE_LEN_BYTES,
nla_get_u32(tbp[i]));
break;
case NDTPA_PROXY_QLEN:
NEIGH_VAR_SET(p, PROXY_QLEN,
nla_get_u32(tbp[i]));
break;
case NDTPA_APP_PROBES:
NEIGH_VAR_SET(p, APP_PROBES,
nla_get_u32(tbp[i]));
break;
case NDTPA_UCAST_PROBES:
NEIGH_VAR_SET(p, UCAST_PROBES,
nla_get_u32(tbp[i]));
break;
case NDTPA_MCAST_PROBES:
NEIGH_VAR_SET(p, MCAST_PROBES,
nla_get_u32(tbp[i]));
break;
case NDTPA_MCAST_REPROBES:
NEIGH_VAR_SET(p, MCAST_REPROBES,
nla_get_u32(tbp[i]));
break;
case NDTPA_BASE_REACHABLE_TIME:
NEIGH_VAR_SET(p, BASE_REACHABLE_TIME,
nla_get_msecs(tbp[i]));
/* update reachable_time as well, otherwise, the change will
* only be effective after the next time neigh_periodic_work
* decides to recompute it (can be multiple minutes)
*/
p->reachable_time =
neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
break;
case NDTPA_GC_STALETIME:
NEIGH_VAR_SET(p, GC_STALETIME,
nla_get_msecs(tbp[i]));
break;
case NDTPA_DELAY_PROBE_TIME:
NEIGH_VAR_SET(p, DELAY_PROBE_TIME,
nla_get_msecs(tbp[i]));
call_netevent_notifiers(NETEVENT_DELAY_PROBE_TIME_UPDATE, p);
break;
case NDTPA_RETRANS_TIME:
NEIGH_VAR_SET(p, RETRANS_TIME,
nla_get_msecs(tbp[i]));
break;
case NDTPA_ANYCAST_DELAY:
NEIGH_VAR_SET(p, ANYCAST_DELAY,
nla_get_msecs(tbp[i]));
break;
case NDTPA_PROXY_DELAY:
NEIGH_VAR_SET(p, PROXY_DELAY,
nla_get_msecs(tbp[i]));
break;
case NDTPA_LOCKTIME:
NEIGH_VAR_SET(p, LOCKTIME,
nla_get_msecs(tbp[i]));
break;
}
}
}
err = -ENOENT;
if ((tb[NDTA_THRESH1] || tb[NDTA_THRESH2] ||
tb[NDTA_THRESH3] || tb[NDTA_GC_INTERVAL]) &&
!net_eq(net, &init_net))
goto errout_tbl_lock;
if (tb[NDTA_THRESH1])
tbl->gc_thresh1 = nla_get_u32(tb[NDTA_THRESH1]);
if (tb[NDTA_THRESH2])
tbl->gc_thresh2 = nla_get_u32(tb[NDTA_THRESH2]);
if (tb[NDTA_THRESH3])
tbl->gc_thresh3 = nla_get_u32(tb[NDTA_THRESH3]);
if (tb[NDTA_GC_INTERVAL])
tbl->gc_interval = nla_get_msecs(tb[NDTA_GC_INTERVAL]);
err = 0;
errout_tbl_lock:
write_unlock_bh(&tbl->lock);
errout:
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 526 | 68.76% | 3 | 17.65% |
Jiri Pirko | 78 | 10.20% | 1 | 5.88% |
Gao Feng | 41 | 5.36% | 1 | 5.88% |
Américo Wang | 36 | 4.71% | 1 | 5.88% |
Hideaki Yoshifuji/吉藤英明 | 19 | 2.48% | 1 | 5.88% |
Eric Dumazet | 18 | 2.35% | 1 | 5.88% |
Jean-Francois Remy | 15 | 1.96% | 1 | 5.88% |
Denis V. Lunev | 9 | 1.18% | 1 | 5.88% |
Ido Schimmel | 7 | 0.92% | 1 | 5.88% |
David Ahern | 7 | 0.92% | 1 | 5.88% |
Hideaki Yoshifuji / 吉藤英明 | 4 | 0.52% | 2 | 11.76% |
Johannes Berg | 2 | 0.26% | 1 | 5.88% |
Eric W. Biedermann | 2 | 0.26% | 1 | 5.88% |
Tobias Klauser | 1 | 0.13% | 1 | 5.88% |
Total | 765 | 100.00% | 17 | 100.00% |
static int neightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
int family, tidx, nidx = 0;
int tbl_skip = cb->args[0];
int neigh_skip = cb->args[1];
struct neigh_table *tbl;
family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
for (tidx = 0; tidx < NEIGH_NR_TABLES; tidx++) {
struct neigh_parms *p;
tbl = neigh_tables[tidx];
if (!tbl)
continue;
if (tidx < tbl_skip || (family && tbl->family != family))
continue;
if (neightbl_fill_info(skb, tbl, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, RTM_NEWNEIGHTBL,
NLM_F_MULTI) < 0)
break;
nidx = 0;
p = list_next_entry(&tbl->parms, list);
list_for_each_entry_from(p, &tbl->parms_list, list) {
if (!net_eq(neigh_parms_net(p), net))
continue;
if (nidx < neigh_skip)
goto next;
if (neightbl_fill_param_info(skb, tbl, p,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWNEIGHTBL,
NLM_F_MULTI) < 0)
goto out;
next:
nidx++;
}
neigh_skip = 0;
}
out:
cb->args[0] = tidx;
cb->args[1] = nidx;
return skb->len;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 179 | 64.16% | 3 | 17.65% |
Linus Torvalds (pre-git) | 27 | 9.68% | 3 | 17.65% |
Américo Wang | 16 | 5.73% | 1 | 5.88% |
Nicolas Dichtel | 16 | 5.73% | 1 | 5.88% |
Hideaki Yoshifuji / 吉藤英明 | 12 | 4.30% | 3 | 17.65% |
Denis V. Lunev | 9 | 3.23% | 1 | 5.88% |
Gautam Kachroo | 8 | 2.87% | 1 | 5.88% |
Eric W. Biedermann | 7 | 2.51% | 2 | 11.76% |
Arnaldo Carvalho de Melo | 3 | 1.08% | 1 | 5.88% |
David S. Miller | 2 | 0.72% | 1 | 5.88% |
Total | 279 | 100.00% | 17 | 100.00% |
static int neigh_fill_info(struct sk_buff *skb, struct neighbour *neigh,
u32 pid, u32 seq, int type, unsigned int flags)
{
unsigned long now = jiffies;
struct nda_cacheinfo ci;
struct nlmsghdr *nlh;
struct ndmsg *ndm;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), flags);
if (nlh == NULL)
return -EMSGSIZE;
ndm = nlmsg_data(nlh);
ndm->ndm_family = neigh->ops->family;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = neigh->flags;
ndm->ndm_type = neigh->type;
ndm->ndm_ifindex = neigh->dev->ifindex;
if (nla_put(skb, NDA_DST, neigh->tbl->key_len, neigh->primary_key))
goto nla_put_failure;
read_lock_bh(&neigh->lock);
ndm->ndm_state = neigh->nud_state;
if (neigh->nud_state & NUD_VALID) {
char haddr[MAX_ADDR_LEN];
neigh_ha_snapshot(haddr, neigh, neigh->dev);
if (nla_put(skb, NDA_LLADDR, neigh->dev->addr_len, haddr) < 0) {
read_unlock_bh(&neigh->lock);
goto nla_put_failure;
}
}
ci.ndm_used = jiffies_to_clock_t(now - neigh->used);
ci.ndm_confirmed = jiffies_to_clock_t(now - neigh->confirmed);
ci.ndm_updated = jiffies_to_clock_t(now - neigh->updated);
ci.ndm_refcnt = refcount_read(&neigh->refcnt) - 1;
read_unlock_bh(&neigh->lock);
if (nla_put_u32(skb, NDA_PROBES, atomic_read(&neigh->probes)) ||
nla_put(skb, NDA_CACHEINFO, sizeof(ci), &ci))
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 |
Linus Torvalds (pre-git) | 188 | 53.56% | 4 | 26.67% |
Thomas Graf | 85 | 24.22% | 2 | 13.33% |
Eric Dumazet | 23 | 6.55% | 1 | 6.67% |
Patrick McHardy | 17 | 4.84% | 2 | 13.33% |
David S. Miller | 16 | 4.56% | 1 | 6.67% |
Stephen Hemminger | 9 | 2.56% | 1 | 6.67% |
Jamal Hadi Salim | 6 | 1.71% | 1 | 6.67% |
Johannes Berg | 3 | 0.85% | 1 | 6.67% |
Arnaldo Carvalho de Melo | 3 | 0.85% | 1 | 6.67% |
Elena Reshetova | 1 | 0.28% | 1 | 6.67% |
Total | 351 | 100.00% | 15 | 100.00% |
static int pneigh_fill_info(struct sk_buff *skb, struct pneigh_entry *pn,
u32 pid, u32 seq, int type, unsigned int flags,
struct neigh_table *tbl)
{
struct nlmsghdr *nlh;
struct ndmsg *ndm;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), flags);
if (nlh == NULL)
return -EMSGSIZE;
ndm = nlmsg_data(nlh);
ndm->ndm_family = tbl->family;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = pn->flags | NTF_PROXY;
ndm->ndm_type = RTN_UNICAST;
ndm->ndm_ifindex = pn->dev ? pn->dev->ifindex : 0;
ndm->ndm_state = NUD_NONE;
if (nla_put(skb, NDA_DST, tbl->key_len, pn->key))
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 |
Tony Zelenoff | 166 | 90.71% | 1 | 20.00% |
David S. Miller | 7 | 3.83% | 1 | 20.00% |
Konstantin Khlebnikov | 6 | 3.28% | 1 | 20.00% |
Johannes Berg | 3 | 1.64% | 1 | 20.00% |
Jun Zhao | 1 | 0.55% | 1 | 20.00% |
Total | 183 | 100.00% | 5 | 100.00% |
static void neigh_update_notify(struct neighbour *neigh, u32 nlmsg_pid)
{
call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh);
__neigh_notify(neigh, RTM_NEWNEIGH, 0, nlmsg_pid);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 27 | 84.38% | 1 | 50.00% |
Roopa Prabhu | 5 | 15.62% | 1 | 50.00% |
Total | 32 | 100.00% | 2 | 100.00% |
static bool neigh_master_filtered(struct net_device *dev, int master_idx)
{
struct net_device *master;
if (!master_idx)
return false;
master = netdev_master_upper_dev_get(dev);
if (!master || master->ifindex != master_idx)
return true;
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David Ahern | 51 | 100.00% | 1 | 100.00% |
Total | 51 | 100.00% | 1 | 100.00% |
static bool neigh_ifindex_filtered(struct net_device *dev, int filter_idx)
{
if (filter_idx && dev->ifindex != filter_idx)
return true;
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David Ahern | 30 | 100.00% | 1 | 100.00% |
Total | 30 | 100.00% | 1 | 100.00% |
static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
const struct nlmsghdr *nlh = cb->nlh;
struct nlattr *tb[NDA_MAX + 1];
struct neighbour *n;
int rc, h, s_h = cb->args[1];
int idx, s_idx = idx = cb->args[2];
struct neigh_hash_table *nht;
int filter_master_idx = 0, filter_idx = 0;
unsigned int flags = NLM_F_MULTI;
int err;
err = nlmsg_parse(nlh, sizeof(struct ndmsg), tb, NDA_MAX, NULL, NULL);
if (!err) {
if (tb[NDA_IFINDEX])
filter_idx = nla_get_u32(tb[NDA_IFINDEX]);
if (tb[NDA_MASTER])
filter_master_idx = nla_get_u32(tb[NDA_MASTER]);
if (filter_idx || filter_master_idx)
flags |= NLM_F_DUMP_FILTERED;
}
rcu_read_lock_bh();
nht = rcu_dereference_bh(tbl->nht);
for (h = s_h; h < (1 << nht->hash_shift); h++) {
if (h > s_h)
s_idx = 0;
for (n = rcu_dereference_bh(nht->hash_buckets[h]), idx = 0;
n != NULL;
n = rcu_dereference_bh(n->next)) {
if (idx < s_idx || !net_eq(dev_net(n->dev), net))
goto next;
if (neigh_ifindex_filtered(n->dev, filter_idx) ||
neigh_master_filtered(n->dev, filter_master_idx))
goto next;
if (neigh_fill_info(skb, n, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWNEIGH,
flags) < 0) {
rc = -1;
goto out;
}
next:
idx++;
}
}
rc = skb->len;
out:
rcu_read_unlock_bh();
cb->args[1] = h;
cb->args[2] = idx;
return rc;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 143 | 37.73% | 3 | 13.64% |
David Ahern | 126 | 33.25% | 2 | 9.09% |
Eric Dumazet | 31 | 8.18% | 3 | 13.64% |
Arnaldo Carvalho de Melo | 23 | 6.07% | 1 | 4.55% |
Eric W. Biedermann | 17 | 4.49% | 2 | 9.09% |
Zhang Shengju | 8 | 2.11% | 1 | 4.55% |
David S. Miller | 8 | 2.11% | 3 | 13.64% |
Gautam Kachroo | 8 | 2.11% | 1 | 4.55% |
Hideaki Yoshifuji / 吉藤英明 | 6 | 1.58% | 2 | 9.09% |
Octavian Purdila | 5 | 1.32% | 1 | 4.55% |
Johannes Berg | 2 | 0.53% | 1 | 4.55% |
Julian Anastasov | 1 | 0.26% | 1 | 4.55% |
Jamal Hadi Salim | 1 | 0.26% | 1 | 4.55% |
Total | 379 | 100.00% | 22 | 100.00% |
static int pneigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
struct netlink_callback *cb)
{
struct pneigh_entry *n;
struct net *net = sock_net(skb->sk);
int rc, h, s_h = cb->args[3];
int idx, s_idx = idx = cb->args[4];
read_lock_bh(&tbl->lock);
for (h = s_h; h <= PNEIGH_HASHMASK; h++) {
if (h > s_h)
s_idx = 0;
for (n = tbl->phash_buckets[h], idx = 0; n; n = n->next) {
if (idx < s_idx || pneigh_net(n) != net)
goto next;
if (pneigh_fill_info(skb, n, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWNEIGH,
NLM_F_MULTI, tbl) < 0) {
read_unlock_bh(&tbl->lock);
rc = -1;
goto out;
}
next:
idx++;
}
}
read_unlock_bh(&tbl->lock);
rc = skb->len;
out:
cb->args[3] = h;
cb->args[4] = idx;
return rc;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Tony Zelenoff | 224 | 96.55% | 1 | 16.67% |
Zhang Shengju | 4 | 1.72% | 1 | 16.67% |
Konstantin Khlebnikov | 1 | 0.43% | 1 | 16.67% |
Eric Dumazet | 1 | 0.43% | 1 | 16.67% |
David S. Miller | 1 | 0.43% | 1 | 16.67% |
Eric W. Biedermann | 1 | 0.43% | 1 | 16.67% |
Total | 232 | 100.00% | 6 | 100.00% |
static int neigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
{
struct neigh_table *tbl;
int t, family, s_t;
int proxy = 0;
int err;
family = ((struct rtgenmsg *) nlmsg_data(cb->nlh))->rtgen_family;
/* check for full ndmsg structure presence, family member is
* the same for both structures
*/
if (nlmsg_len(cb->nlh) >= sizeof(struct ndmsg) &&
((struct ndmsg *) nlmsg_data(cb->nlh))->ndm_flags == NTF_PROXY)
proxy = 1;
s_t = cb->args[0];
for (t = 0; t < NEIGH_NR_TABLES; t++) {
tbl = neigh_tables[t];
if (!tbl)
continue;
if (t < s_t || (family && tbl->family != family))
continue;
if (t > s_t)
memset(&cb->args[1], 0, sizeof(cb->args) -
sizeof(cb->args[0]));
if (proxy)
err = pneigh_dump_table(tbl, skb, cb);
else
err = neigh_dump_table(tbl, skb, cb);
if (err < 0)
break;
}
cb->args[0] = t;
return skb->len;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 131 | 56.96% | 2 | 25.00% |
Tony Zelenoff | 63 | 27.39% | 1 | 12.50% |
Américo Wang | 16 | 6.96% | 1 | 12.50% |
Arnaldo Carvalho de Melo | 11 | 4.78% | 1 | 12.50% |
Eric Dumazet | 7 | 3.04% | 1 | 12.50% |
Thomas Graf | 2 | 0.87% | 2 | 25.00% |
Total | 230 | 100.00% | 8 | 100.00% |
void neigh_for_each(struct neigh_table *tbl, void (*cb)(struct neighbour *, void *), void *cookie)
{
int chain;
struct neigh_hash_table *nht;
rcu_read_lock_bh();
nht = rcu_dereference_bh(tbl->nht);
read_lock(&tbl->lock); /* avoid resizes */
for (chain = 0; chain < (1 << nht->hash_shift); chain++) {
struct neighbour *n;
for (n = rcu_dereference_bh(nht->hash_buckets[chain]);
n != NULL;
n = rcu_dereference_bh(n->next))
cb(n, cookie);
}
read_unlock(&tbl->lock);
rcu_read_unlock_bh();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 95 | 74.22% | 3 | 60.00% |
Eric Dumazet | 33 | 25.78% | 2 | 40.00% |
Total | 128 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(neigh_for_each);
/* The tbl->lock must be held as a writer and BH disabled. */
void __neigh_for_each_release(struct neigh_table *tbl,
int (*cb)(struct neighbour *))
{
int chain;
struct neigh_hash_table *nht;
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
for (chain = 0; chain < (1 << nht->hash_shift); chain++) {
struct neighbour *n;
struct neighbour __rcu **np;
np = &nht->hash_buckets[chain];
while ((n = rcu_dereference_protected(*np,
lockdep_is_held(&tbl->lock))) != NULL) {
int release;
write_lock(&n->lock);
release = cb(n);
if (release) {
rcu_assign_pointer(*np,
rcu_dereference_protected(n->next,
lockdep_is_held(&tbl->lock)));
n->dead = 1;
} else
np = &n->next;
write_unlock(&n->lock);
if (release)
neigh_cleanup_and_release(n);
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 129 | 68.25% | 3 | 42.86% |
Eric Dumazet | 54 | 28.57% | 2 | 28.57% |
Alexey Kuznetsov | 5 | 2.65% | 1 | 14.29% |
Thomas Graf | 1 | 0.53% | 1 | 14.29% |
Total | 189 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(__neigh_for_each_release);
int neigh_xmit(int index, struct net_device *dev,
const void *addr, struct sk_buff *skb)
{
int err = -EAFNOSUPPORT;
if (likely(index < NEIGH_NR_TABLES)) {
struct neigh_table *tbl;
struct neighbour *neigh;
tbl = neigh_tables[index];
if (!tbl)
goto out;
rcu_read_lock_bh();
neigh = __neigh_lookup_noref(tbl, addr, dev);
if (!neigh)
neigh = __neigh_create(tbl, addr, dev, false);
err = PTR_ERR(neigh);
if (IS_ERR(neigh)) {
rcu_read_unlock_bh();
goto out_kfree_skb;
}
err = neigh->output(neigh, skb);
rcu_read_unlock_bh();
}
else if (index == NEIGH_LINK_TABLE) {
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
addr, NULL, skb->len);
if (err < 0)
goto out_kfree_skb;
err = dev_queue_xmit(skb);
}
out:
return err;
out_kfree_skb:
kfree_skb(skb);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric W. Biedermann | 186 | 94.42% | 2 | 66.67% |
David Barroso | 11 | 5.58% | 1 | 33.33% |
Total | 197 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(neigh_xmit);
#ifdef CONFIG_PROC_FS
static struct neighbour *neigh_get_first(struct seq_file *seq)
{
struct neigh_seq_state *state = seq->private;
struct net *net = seq_file_net(seq);
struct neigh_hash_table *nht = state->nht;
struct neighbour *n = NULL;
int bucket = state->bucket;
state->flags &= ~NEIGH_SEQ_IS_PNEIGH;
for (bucket = 0; bucket < (1 << nht->hash_shift); bucket++) {
n = rcu_dereference_bh(nht->hash_buckets[bucket]);
while (n) {
if (!net_eq(dev_net(n->dev), net))
goto next;
if (state->neigh_sub_iter) {
loff_t fakep = 0;
void *v;
v = state->neigh_sub_iter(state, n, &fakep);
if (!v)
goto next;
}
if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
break;
if (n->nud_state & ~NUD_NOARP)
break;
next:
n = rcu_dereference_bh(n->next);
}
if (n)
break;
}
state->bucket = bucket;
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 166 | 80.98% | 3 | 33.33% |
Eric W. Biedermann | 16 | 7.80% | 1 | 11.11% |
Hideaki Yoshifuji / 吉藤英明 | 12 | 5.85% | 3 | 33.33% |
Eric Dumazet | 11 | 5.37% | 2 | 22.22% |
Total | 205 | 100.00% | 9 | 100.00% |
static struct neighbour *neigh_get_next(struct seq_file *seq,
struct neighbour *n,
loff_t *pos)
{
struct neigh_seq_state *state = seq->private;
struct net *net = seq_file_net(seq);
struct neigh_hash_table *nht = state->nht;
if (state->neigh_sub_iter) {
void *v = state->neigh_sub_iter(state, n, pos);
if (v)
return n;
}
n = rcu_dereference_bh(n->next);
while (1) {
while (n) {
if (!net_eq(dev_net(n->dev), net))
goto next;
if (state->neigh_sub_iter) {
void *v = state->neigh_sub_iter(state, n, pos);
if (v)
return n;
goto next;
}
if (!(state->flags & NEIGH_SEQ_SKIP_NOARP))
break;
if (n->nud_state & ~NUD_NOARP)
break;
next:
n = rcu_dereference_bh(n->next);
}
if (n)
break;
if (++state->bucket >= (1 << nht->hash_shift))
break;
n = rcu_dereference_bh(nht->hash_buckets[state->bucket]);
}
if (n && pos)
--(*pos);
return n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 193 | 82.13% | 3 | 33.33% |
Eric W. Biedermann | 16 | 6.81% | 1 | 11.11% |
Eric Dumazet | 14 | 5.96% | 2 | 22.22% |
Hideaki Yoshifuji / 吉藤英明 | 12 | 5.11% | 3 | 33.33% |
Total | 235 | 100.00% | 9 | 100.00% |
static struct neighbour *neigh_get_idx(struct seq_file *seq, loff_t *pos)
{
struct neighbour *n = neigh_get_first(seq);
if (n) {
--(*pos);
while (*pos) {
n = neigh_get_next(seq, n, pos);
if (!n)
break;
}
}
return *pos ? NULL : n;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 65 | 91.55% | 1 | 50.00% |
Chris Larson | 6 | 8.45% | 1 | 50.00% |
Total | 71 | 100.00% | 2 | 100.00% |
static struct pneigh_entry *pneigh_get_first(struct seq_file *seq)
{
struct neigh_seq_state *state = seq->private;
struct net *net = seq_file_net(seq);
struct neigh_table *tbl = state->tbl;
struct pneigh_entry *pn = NULL;
int bucket = state->bucket;
state->flags |= NEIGH_SEQ_IS_PNEIGH;
for (bucket = 0; bucket <= PNEIGH_HASHMASK; bucket++) {
pn = tbl->phash_buckets[bucket];
while (pn && !net_eq(pneigh_net(pn), net))
pn = pn->next;
if (pn)
break;
}
state->bucket = bucket;
return pn;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 89 | 74.17% | 1 | 20.00% |
Eric W. Biedermann | 19 | 15.83% | 1 | 20.00% |
Hideaki Yoshifuji / 吉藤英明 | 12 | 10.00% | 3 | 60.00% |
Total | 120 | 100.00% | 5 | 100.00% |
static struct pneigh_entry *pneigh_get_next(struct seq_file *seq,
struct pneigh_entry *pn,
loff_t *pos)
{
struct neigh_seq_state *state = seq->private;
struct net *net = seq_file_net(seq);
struct neigh_table *tbl = state->tbl;
do {
pn = pn->next;
} while (pn && !net_eq(pneigh_net(pn), net));
while (!pn) {
if (++state->bucket > PNEIGH_HASHMASK)
break;
pn = tbl->phash_buckets[state->bucket];
while (pn && !net_eq(pneigh_net(pn), net))
pn = pn->next;
if (pn)
break;
}
if (pn && pos)
--(*pos);
return pn;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 94 | 65.28% | 1 | 16.67% |
Eric W. Biedermann | 19 | 13.19% | 1 | 16.67% |
Jorge Boncompte | 19 | 13.19% | 1 | 16.67% |
Hideaki Yoshifuji / 吉藤英明 | 12 | 8.33% | 3 | 50.00% |
Total | 144 | 100.00% | 6 | 100.00% |
static struct pneigh_entry *pneigh_get_idx(struct seq_file *seq, loff_t *pos)
{
struct pneigh_entry *pn = pneigh_get_first(seq);
if (pn) {
--(*pos);
while (*pos) {
pn = pneigh_get_next(seq, pn, pos);
if (!pn)
break;
}
}
return *pos ? NULL : pn;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 65 | 91.55% | 1 | 50.00% |
Chris Larson | 6 | 8.45% | 1 | 50.00% |
Total | 71 | 100.00% | 2 | 100.00% |
static void *neigh_get_idx_any(struct seq_file *seq, loff_t *pos)
{
struct neigh_seq_state *state = seq->private;
void *rc;
loff_t idxpos = *pos;
rc = neigh_get_idx(seq, &idxpos);
if (!rc && !(state->flags & NEIGH_SEQ_NEIGH_ONLY))
rc = pneigh_get_idx(seq, &idxpos);
return rc;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 62 | 86.11% | 1 | 50.00% |
Chris Larson | 10 | 13.89% | 1 | 50.00% |
Total | 72 | 100.00% | 2 | 100.00% |
void *neigh_seq_start(struct seq_file *seq, loff_t *pos, struct neigh_table *tbl, unsigned int neigh_seq_flags)
__acquires(rcu_bh)
{
struct neigh_seq_state *state = seq->private;
state->tbl = tbl;
state->bucket = 0;
state->flags = (neigh_seq_flags & ~NEIGH_SEQ_IS_PNEIGH);
rcu_read_lock_bh();
state->nht = rcu_dereference_bh(tbl->nht);
return *pos ? neigh_get_idx_any(seq, pos) : SEQ_START_TOKEN;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 68 | 78.16% | 1 | 33.33% |
Eric Dumazet | 18 | 20.69% | 1 | 33.33% |
Chris Larson | 1 | 1.15% | 1 | 33.33% |
Total | 87 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(neigh_seq_start);
void *neigh_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct neigh_seq_state *state;
void *rc;
if (v == SEQ_START_TOKEN) {
rc = neigh_get_first(seq);
goto out;
}
state = seq->private;
if (!(state->flags & NEIGH_SEQ_IS_PNEIGH)) {
rc = neigh_get_next(seq, v, NULL);
if (rc)
goto out;
if (!(state->flags & NEIGH_SEQ_NEIGH_ONLY))
rc = pneigh_get_first(seq);
} else {
BUG_ON(state->flags & NEIGH_SEQ_NEIGH_ONLY);
rc = pneigh_get_next(seq, v, NULL);
}
out:
++(*pos);
return rc;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 134 | 99.26% | 1 | 50.00% |
Chris Larson | 1 | 0.74% | 1 | 50.00% |
Total | 135 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(neigh_seq_next);
void neigh_seq_stop(struct seq_file *seq, void *v)
__releases(rcu_bh)
{
rcu_read_unlock_bh();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 14 | 66.67% | 1 | 50.00% |
Eric Dumazet | 7 | 33.33% | 1 | 50.00% |
Total | 21 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(neigh_seq_stop);
/* statistics via seq_file */
static void *neigh_stat_seq_start(struct seq_file *seq, loff_t *pos)
{
struct neigh_table *tbl = seq->private;
int cpu;
if (*pos == 0)
return SEQ_START_TOKEN;
for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
if (!cpu_possible(cpu))
continue;
*pos = cpu+1;
return per_cpu_ptr(tbl->stats, cpu);
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 82 | 96.47% | 1 | 33.33% |
Alexey Dobriyan | 2 | 2.35% | 1 | 33.33% |
Rusty Russell | 1 | 1.18% | 1 | 33.33% |
Total | 85 | 100.00% | 3 | 100.00% |
static void *neigh_stat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct neigh_table *tbl = seq->private;
int cpu;
for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
if (!cpu_possible(cpu))
continue;
*pos = cpu+1;
return per_cpu_ptr(tbl->stats, cpu);
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 74 | 96.10% | 1 | 33.33% |
Alexey Dobriyan | 2 | 2.60% | 1 | 33.33% |
Rusty Russell | 1 | 1.30% | 1 | 33.33% |
Total | 77 | 100.00% | 3 | 100.00% |
static void neigh_stat_seq_stop(struct seq_file *seq, void *v)
{
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 14 | 100.00% | 1 | 100.00% |
Total | 14 | 100.00% | 1 | 100.00% |
static int neigh_stat_seq_show(struct seq_file *seq, void *v)
{
struct neigh_table *tbl = seq->private;
struct neigh_statistics *st = v;
if (v == SEQ_START_TOKEN) {
seq_printf(seq, "entries allocs destroys hash_grows lookups hits res_failed rcv_probes_mcast rcv_probes_ucast periodic_gc_runs forced_gc_runs unresolved_discards table_fulls\n");
return 0;
}
seq_printf(seq, "%08x %08lx %08lx %08lx %08lx %08lx %08lx "
"%08lx %08lx %08lx %08lx %08lx %08lx\n",
atomic_read(&tbl->entries),
st->allocs,
st->destroys,
st->hash_grows,
st->lookups,
st->hits,
st->res_failed,
st->rcv_probes_mcast,
st->rcv_probes_ucast,
st->periodic_gc_runs,
st->forced_gc_runs,
st->unres_discards,
st->table_fulls
);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 100 | 86.21% | 1 | 20.00% |
Rick Jones | 6 | 5.17% | 1 | 20.00% |
Herbert Xu | 4 | 3.45% | 1 | 20.00% |
Neil Horman | 4 | 3.45% | 1 | 20.00% |
Alexey Dobriyan | 2 | 1.72% | 1 | 20.00% |
Total | 116 | 100.00% | 5 | 100.00% |
static const struct seq_operations neigh_stat_seq_ops = {
.start = neigh_stat_seq_start,
.next = neigh_stat_seq_next,
.stop = neigh_stat_seq_stop,
.show = neigh_stat_seq_show,
};
static int neigh_stat_seq_open(struct inode *inode, struct file *file)
{
int ret = seq_open(file, &neigh_stat_seq_ops);
if (!ret) {
struct seq_file *sf = file->private_data;
sf->private = PDE_DATA(inode);
}
return ret;
}Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 54 | 98.18% | 1 | 50.00% |
Al Viro | 1 | 1.82% | 1 | 50.00% |
Total | 55 | 100.00% | 2 | 100.00% |
;
static const struct file_operations neigh_stat_seq_fops = {
.owner = THIS_MODULE,
.open = neigh_stat_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
#endif /* CONFIG_PROC_FS */
static inline size_t neigh_nlmsg_size(void)
{
return NLMSG_ALIGN(sizeof(struct ndmsg))
+ nla_total_size(MAX_ADDR_LEN) /* NDA_DST */
+ nla_total_size(MAX_ADDR_LEN) /* NDA_LLADDR */
+ nla_total_size(sizeof(struct nda_cacheinfo))
+ nla_total_size(4); /* NDA_PROBES */
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 46 | 100.00% | 1 | 100.00% |
Total | 46 | 100.00% | 1 | 100.00% |
static void __neigh_notify(struct neighbour *n, int type, int flags,
u32 pid)
{
struct net *net = dev_net(n->dev);
struct sk_buff *skb;
int err = -ENOBUFS;
skb = nlmsg_new(neigh_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
goto errout;
err = neigh_fill_info(skb, n, pid, 0, type, flags);
if (err < 0) {
/* -EMSGSIZE implies BUG in neigh_nlmsg_size() */
WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
return;
errout:
if (err < 0)
rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 52 | 37.96% | 3 | 23.08% |
Linus Torvalds (pre-git) | 40 | 29.20% | 1 | 7.69% |
Patrick McHardy | 21 | 15.33% | 2 | 15.38% |
Eric W. Biedermann | 11 | 8.03% | 1 | 7.69% |
Roopa Prabhu | 4 | 2.92% | 1 | 7.69% |
Hideaki Yoshifuji / 吉藤英明 | 3 | 2.19% | 1 | 7.69% |
Arnaldo Carvalho de Melo | 2 | 1.46% | 1 | 7.69% |
Denis V. Lunev | 2 | 1.46% | 1 | 7.69% |
Jamal Hadi Salim | 1 | 0.73% | 1 | 7.69% |
Pablo Neira Ayuso | 1 | 0.73% | 1 | 7.69% |
Total | 137 | 100.00% | 13 | 100.00% |
void neigh_app_ns(struct neighbour *n)
{
__neigh_notify(n, RTM_GETNEIGH, NLM_F_REQUEST, 0);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 13 | 61.90% | 1 | 25.00% |
Thomas Graf | 5 | 23.81% | 1 | 25.00% |
Roopa Prabhu | 2 | 9.52% | 1 | 25.00% |
Jamal Hadi Salim | 1 | 4.76% | 1 | 25.00% |
Total | 21 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(neigh_app_ns);
#ifdef CONFIG_SYSCTL
static int zero;
static int int_max = INT_MAX;
static int unres_qlen_max = INT_MAX / SKB_TRUESIZE(ETH_FRAME_LEN);
static int proc_unres_qlen(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int size, ret;
struct ctl_table tmp = *ctl;
tmp.extra1 = &zero;
tmp.extra2 = &unres_qlen_max;
tmp.data = &size;
size = *(int *)ctl->data / SKB_TRUESIZE(ETH_FRAME_LEN);
ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
if (write && !ret)
*(int *)ctl->data = size * SKB_TRUESIZE(ETH_FRAME_LEN);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric Dumazet | 100 | 84.75% | 1 | 33.33% |
Shan Wei | 16 | 13.56% | 1 | 33.33% |
Joe Perches | 2 | 1.69% | 1 | 33.33% |
Total | 118 | 100.00% | 3 | 100.00% |
static struct neigh_parms *neigh_get_dev_parms_rcu(struct net_device *dev,
int family)
{
switch (family) {
case AF_INET:
return __in_dev_arp_parms_get_rcu(dev);
case AF_INET6:
return __in6_dev_nd_parms_get_rcu(dev);
}
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 43 | 100.00% | 2 | 100.00% |
Total | 43 | 100.00% | 2 | 100.00% |
static void neigh_copy_dflt_parms(struct net *net, struct neigh_parms *p,
int index)
{
struct net_device *dev;
int family = neigh_parms_family(p);
rcu_read_lock();
for_each_netdev_rcu(net, dev) {
struct neigh_parms *dst_p =
neigh_get_dev_parms_rcu(dev, family);
if (dst_p && !test_bit(index, dst_p->data_state))
dst_p->data[index] = p->data[index];
}
rcu_read_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 86 | 100.00% | 1 | 100.00% |
Total | 86 | 100.00% | 1 | 100.00% |
static void neigh_proc_update(struct ctl_table *ctl, int write)
{
struct net_device *dev = ctl->extra1;
struct neigh_parms *p = ctl->extra2;
struct net *net = neigh_parms_net(p);
int index = (int *) ctl->data - p->data;
if (!write)
return;
set_bit(index, p->data_state);
if (index == NEIGH_VAR_DELAY_PROBE_TIME)
call_netevent_notifiers(NETEVENT_DELAY_PROBE_TIME_UPDATE, p);
if (!dev) /* NULL dev means this is default value */
neigh_copy_dflt_parms(net, p, index);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 87 | 87.00% | 2 | 50.00% |
Ido Schimmel | 7 | 7.00% | 1 | 25.00% |
Marcus Huewe | 6 | 6.00% | 1 | 25.00% |
Total | 100 | 100.00% | 4 | 100.00% |
static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table tmp = *ctl;
int ret;
tmp.extra1 = &zero;
tmp.extra2 = &int_max;
ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 75 | 97.40% | 2 | 66.67% |
Eric Dumazet | 2 | 2.60% | 1 | 33.33% |
Total | 77 | 100.00% | 3 | 100.00% |
int neigh_proc_dointvec(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 52 | 100.00% | 2 | 100.00% |
Total | 52 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(neigh_proc_dointvec);
int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 52 | 100.00% | 2 | 100.00% |
Total | 52 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(neigh_proc_dointvec_jiffies);
static int neigh_proc_dointvec_userhz_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_userhz_jiffies(ctl, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 53 | 100.00% | 2 | 100.00% |
Total | 53 | 100.00% | 2 | 100.00% |
int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_ms_jiffies(ctl, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 52 | 100.00% | 2 | 100.00% |
Total | 52 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(neigh_proc_dointvec_ms_jiffies);
static int neigh_proc_dointvec_unres_qlen(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_unres_qlen(ctl, write, buffer, lenp, ppos);
neigh_proc_update(ctl, write);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 53 | 100.00% | 2 | 100.00% |
Total | 53 | 100.00% | 2 | 100.00% |
static int neigh_proc_base_reachable_time(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
{
struct neigh_parms *p = ctl->extra2;
int ret;
if (strcmp(ctl->procname, "base_reachable_time") == 0)
ret = neigh_proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos);
else if (strcmp(ctl->procname, "base_reachable_time_ms") == 0)
ret = neigh_proc_dointvec_ms_jiffies(ctl, write, buffer, lenp, ppos);
else
ret = -1;
if (write && ret == 0) {
/* update reachable_time as well, otherwise, the change will
* only be effective after the next time neigh_periodic_work
* decides to recompute it
*/
p->reachable_time =
neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jean-Francois Remy | 130 | 100.00% | 1 | 100.00% |
Total | 130 | 100.00% | 1 | 100.00% |
#define NEIGH_PARMS_DATA_OFFSET(index) \
(&((struct neigh_parms *) 0)->data[index])
#define NEIGH_SYSCTL_ENTRY(attr, data_attr, name, mval, proc) \
[NEIGH_VAR_ ## attr] = { \
.procname = name, \
.data = NEIGH_PARMS_DATA_OFFSET(NEIGH_VAR_ ## data_attr), \
.maxlen = sizeof(int), \
.mode = mval, \
.proc_handler = proc, \
}
#define NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(attr, name) \
NEIGH_SYSCTL_ENTRY(attr, attr, name, 0644, neigh_proc_dointvec_zero_intmax)
#define NEIGH_SYSCTL_JIFFIES_ENTRY(attr, name) \
NEIGH_SYSCTL_ENTRY(attr, attr, name, 0644, neigh_proc_dointvec_jiffies)
#define NEIGH_SYSCTL_USERHZ_JIFFIES_ENTRY(attr, name) \
NEIGH_SYSCTL_ENTRY(attr, attr, name, 0644, neigh_proc_dointvec_userhz_jiffies)
#define NEIGH_SYSCTL_MS_JIFFIES_ENTRY(attr, name) \
NEIGH_SYSCTL_ENTRY(attr, attr, name, 0644, neigh_proc_dointvec_ms_jiffies)
#define NEIGH_SYSCTL_MS_JIFFIES_REUSED_ENTRY(attr, data_attr, name) \
NEIGH_SYSCTL_ENTRY(attr, data_attr, name, 0644, neigh_proc_dointvec_ms_jiffies)
#define NEIGH_SYSCTL_UNRES_QLEN_REUSED_ENTRY(attr, data_attr, name) \
NEIGH_SYSCTL_ENTRY(attr, data_attr, name, 0644, neigh_proc_dointvec_unres_qlen)
static struct neigh_sysctl_table {
struct ctl_table_header *sysctl_header;
struct ctl_table neigh_vars[NEIGH_VAR_MAX + 1];
} neigh_sysctl_template __read_mostly = {
.neigh_vars = {
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(MCAST_PROBES, "mcast_solicit"),
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(UCAST_PROBES, "ucast_solicit"),
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(APP_PROBES, "app_solicit"),
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(MCAST_REPROBES, "mcast_resolicit"),
NEIGH_SYSCTL_USERHZ_JIFFIES_ENTRY(RETRANS_TIME, "retrans_time"),
NEIGH_SYSCTL_JIFFIES_ENTRY(BASE_REACHABLE_TIME, "base_reachable_time"),
NEIGH_SYSCTL_JIFFIES_ENTRY(DELAY_PROBE_TIME, "delay_first_probe_time"),
NEIGH_SYSCTL_JIFFIES_ENTRY(GC_STALETIME, "gc_stale_time"),
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(QUEUE_LEN_BYTES, "unres_qlen_bytes"),
NEIGH_SYSCTL_ZERO_INTMAX_ENTRY(PROXY_QLEN, "proxy_qlen"),
NEIGH_SYSCTL_USERHZ_JIFFIES_ENTRY(ANYCAST_DELAY, "anycast_delay"),
NEIGH_SYSCTL_USERHZ_JIFFIES_ENTRY(PROXY_DELAY, "proxy_delay"),
NEIGH_SYSCTL_USERHZ_JIFFIES_ENTRY(LOCKTIME, "locktime"),
NEIGH_SYSCTL_UNRES_QLEN_REUSED_ENTRY(QUEUE_LEN, QUEUE_LEN_BYTES, "unres_qlen"),
NEIGH_SYSCTL_MS_JIFFIES_REUSED_ENTRY(RETRANS_TIME_MS, RETRANS_TIME, "retrans_time_ms"),
NEIGH_SYSCTL_MS_JIFFIES_REUSED_ENTRY(BASE_REACHABLE_TIME_MS, BASE_REACHABLE_TIME, "base_reachable_time_ms"),
[NEIGH_VAR_GC_INTERVAL] = {
.procname = "gc_interval",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
[NEIGH_VAR_GC_THRESH1] = {
.procname = "gc_thresh1",
.maxlen = sizeof(int),
.mode = 0644,
.extra1 = &zero,
.extra2 = &int_max,
.proc_handler = proc_dointvec_minmax,
},
[NEIGH_VAR_GC_THRESH2] = {
.procname = "gc_thresh2",
.maxlen = sizeof(int),
.mode = 0644,
.extra1 = &zero,
.extra2 = &int_max,
.proc_handler = proc_dointvec_minmax,
},
[NEIGH_VAR_GC_THRESH3] = {
.procname = "gc_thresh3",
.maxlen = sizeof(int),
.mode = 0644,
.extra1 = &zero,
.extra2 = &int_max,
.proc_handler = proc_dointvec_minmax,
},
{},
},
};
int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
proc_handler *handler)
{
int i;
struct neigh_sysctl_table *t;
const char *dev_name_source;
char neigh_path[ sizeof("net//neigh/") + IFNAMSIZ + IFNAMSIZ ];
char *p_name;
t = kmemdup(&neigh_sysctl_template, sizeof(*t), GFP_KERNEL);
if (!t)
goto err;
for (i = 0; i < NEIGH_VAR_GC_INTERVAL; i++) {
t->neigh_vars[i].data += (long) p;
t->neigh_vars[i].extra1 = dev;
t->neigh_vars[i].extra2 = p;
}
if (dev) {
dev_name_source = dev->name;
/* Terminate the table early */
memset(&t->neigh_vars[NEIGH_VAR_GC_INTERVAL], 0,
sizeof(t->neigh_vars[NEIGH_VAR_GC_INTERVAL]));
} else {
struct neigh_table *tbl = p->tbl;
dev_name_source = "default";
t->neigh_vars[NEIGH_VAR_GC_INTERVAL].data = &tbl->gc_interval;
t->neigh_vars[NEIGH_VAR_GC_THRESH1].data = &tbl->gc_thresh1;
t->neigh_vars[NEIGH_VAR_GC_THRESH2].data = &tbl->gc_thresh2;
t->neigh_vars[NEIGH_VAR_GC_THRESH3].data = &tbl->gc_thresh3;
}
if (handler) {
/* RetransTime */
t->neigh_vars[NEIGH_VAR_RETRANS_TIME].proc_handler = handler;
/* ReachableTime */
t->neigh_vars[NEIGH_VAR_BASE_REACHABLE_TIME].proc_handler = handler;
/* RetransTime (in milliseconds)*/
t->neigh_vars[NEIGH_VAR_RETRANS_TIME_MS].proc_handler = handler;
/* ReachableTime (in milliseconds) */
t->neigh_vars[NEIGH_VAR_BASE_REACHABLE_TIME_MS].proc_handler = handler;
} else {
/* Those handlers will update p->reachable_time after
* base_reachable_time(_ms) is set to ensure the new timer starts being
* applied after the next neighbour update instead of waiting for
* neigh_periodic_work to update its value (can be multiple minutes)
* So any handler that replaces them should do this as well
*/
/* ReachableTime */
t->neigh_vars[NEIGH_VAR_BASE_REACHABLE_TIME].proc_handler =
neigh_proc_base_reachable_time;
/* ReachableTime (in milliseconds) */
t->neigh_vars[NEIGH_VAR_BASE_REACHABLE_TIME_MS].proc_handler =
neigh_proc_base_reachable_time;
}
/* Don't export sysctls to unprivileged users */
if (neigh_parms_net(p)->user_ns != &init_user_ns)
t->neigh_vars[0].procname = NULL;
switch (neigh_parms_family(p)) {
case AF_INET:
p_name = "ipv4";
break;
case AF_INET6:
p_name = "ipv6";
break;
default:
BUG();
}
snprintf(neigh_path, sizeof(neigh_path), "net/%s/neigh/%s",
p_name, dev_name_source);
t->sysctl_header =
register_net_sysctl(neigh_parms_net(p), neigh_path, t->neigh_vars);
if (!t->sysctl_header)
goto free;
p->sysctl_table = t;
return 0;
free:
kfree(t);
err:
return -ENOBUFS;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 97 | 22.40% | 4 | 17.39% |
Jiri Pirko | 77 | 17.78% | 5 | 21.74% |
Eric W. Biedermann | 69 | 15.94% | 3 | 13.04% |
Hideaki Yoshifuji / 吉藤英明 | 66 | 15.24% | 2 | 8.70% |
Pavel Emelyanov | 29 | 6.70% | 2 | 8.70% |
Jean-Francois Remy | 28 | 6.47% | 1 | 4.35% |
Mathias Krause | 25 | 5.77% | 1 | 4.35% |
Dan Aloni | 24 | 5.54% | 1 | 4.35% |
Eric Dumazet | 10 | 2.31% | 1 | 4.35% |
Shirley Ma | 3 | 0.69% | 1 | 4.35% |
Arnaldo Carvalho de Melo | 3 | 0.69% | 1 | 4.35% |
Denis V. Lunev | 2 | 0.46% | 1 | 4.35% |
Total | 433 | 100.00% | 23 | 100.00% |
EXPORT_SYMBOL(neigh_sysctl_register);
void neigh_sysctl_unregister(struct neigh_parms *p)
{
if (p->sysctl_table) {
struct neigh_sysctl_table *t = p->sysctl_table;
p->sysctl_table = NULL;
unregister_net_sysctl_table(t->sysctl_header);
kfree(t);
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 41 | 91.11% | 2 | 50.00% |
Dan Aloni | 3 | 6.67% | 1 | 25.00% |
Eric W. Biedermann | 1 | 2.22% | 1 | 25.00% |
Total | 45 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(neigh_sysctl_unregister);
#endif /* CONFIG_SYSCTL */
static int __init neigh_init(void)
{
rtnl_register(PF_UNSPEC, RTM_NEWNEIGH, neigh_add, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_DELNEIGH, neigh_delete, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_GETNEIGH, NULL, neigh_dump_info, 0);
rtnl_register(PF_UNSPEC, RTM_GETNEIGHTBL, NULL, neightbl_dump_info,
0);
rtnl_register(PF_UNSPEC, RTM_SETNEIGHTBL, neightbl_set, NULL, 0);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 67 | 87.01% | 1 | 33.33% |
Florian Westphal | 5 | 6.49% | 1 | 33.33% |
Greg Rose | 5 | 6.49% | 1 | 33.33% |
Total | 77 | 100.00% | 3 | 100.00% |
subsys_initcall(neigh_init);
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 4241 | 25.16% | 18 | 6.72% |
David S. Miller | 2692 | 15.97% | 35 | 13.06% |
Thomas Graf | 2420 | 14.36% | 17 | 6.34% |
Eric Dumazet | 1334 | 7.91% | 18 | 6.72% |
Jiri Pirko | 1092 | 6.48% | 8 | 2.99% |
Hideaki Yoshifuji / 吉藤英明 | 1026 | 6.09% | 22 | 8.21% |
Eric W. Biedermann | 549 | 3.26% | 13 | 4.85% |
Tony Zelenoff | 453 | 2.69% | 1 | 0.37% |
Sowmini Varadhan | 298 | 1.77% | 1 | 0.37% |
Arnaldo Carvalho de Melo | 238 | 1.41% | 4 | 1.49% |
Herbert Xu | 234 | 1.39% | 5 | 1.87% |
David Ahern | 225 | 1.33% | 3 | 1.12% |
Américo Wang | 218 | 1.29% | 2 | 0.75% |
Pavel Emelyanov | 200 | 1.19% | 8 | 2.99% |
Jean-Francois Remy | 173 | 1.03% | 1 | 0.37% |
Timo Teräs | 131 | 0.78% | 2 | 0.75% |
Patrick McHardy | 88 | 0.52% | 5 | 1.87% |
Nicolas Dichtel | 88 | 0.52% | 3 | 1.12% |
Joe Perches | 71 | 0.42% | 3 | 1.12% |
Jiri Benc | 67 | 0.40% | 1 | 0.37% |
Denis V. Lunev | 65 | 0.39% | 6 | 2.24% |
Julian Anastasov | 62 | 0.37% | 3 | 1.12% |
Hideaki Yoshifuji/吉藤英明 | 62 | 0.37% | 1 | 0.37% |
Gao Feng | 53 | 0.31% | 3 | 1.12% |
Francesco Fusco | 46 | 0.27% | 1 | 0.37% |
Roopa Prabhu | 42 | 0.25% | 1 | 0.37% |
Stephen Hemminger | 38 | 0.23% | 7 | 2.61% |
Ihar Hrachyshka | 33 | 0.20% | 1 | 0.37% |
Rick Jones | 32 | 0.19% | 1 | 0.37% |
Veaceslav Falico | 30 | 0.18% | 1 | 0.37% |
Dan Aloni | 27 | 0.16% | 1 | 0.37% |
Mathias Krause | 25 | 0.15% | 1 | 0.37% |
Ville Nuorvala | 24 | 0.14% | 1 | 0.37% |
Chris Larson | 24 | 0.14% | 2 | 0.75% |
Tom Tucker | 23 | 0.14% | 1 | 0.37% |
Duan Jiong | 22 | 0.13% | 3 | 1.12% |
Ido Schimmel | 21 | 0.12% | 2 | 0.75% |
Rusty Russell | 20 | 0.12% | 2 | 0.75% |
Erik Kline | 20 | 0.12% | 1 | 0.37% |
Alexey Dobriyan | 20 | 0.12% | 3 | 1.12% |
Tommi Virtanen | 19 | 0.11% | 1 | 0.37% |
Andrew Morton | 19 | 0.11% | 3 | 1.12% |
Jorge Boncompte | 19 | 0.11% | 1 | 0.37% |
Shan Wei | 17 | 0.10% | 1 | 0.37% |
Michel Machado | 17 | 0.10% | 1 | 0.37% |
Johannes Berg | 17 | 0.10% | 2 | 0.75% |
Gautam Kachroo | 16 | 0.09% | 1 | 0.37% |
Kirill Korotaev | 13 | 0.08% | 1 | 0.37% |
Neil Horman | 13 | 0.08% | 1 | 0.37% |
Doug Kehn | 13 | 0.08% | 1 | 0.37% |
Zhang Shengju | 12 | 0.07% | 1 | 0.37% |
ramesh.nagappa@gmail.com | 12 | 0.07% | 1 | 0.37% |
David Barroso | 11 | 0.07% | 1 | 0.37% |
Elena Reshetova | 11 | 0.07% | 2 | 0.75% |
Jamal Hadi Salim | 9 | 0.05% | 1 | 0.37% |
Arjan van de Ven | 8 | 0.05% | 2 | 0.75% |
Konstantin Khlebnikov | 7 | 0.04% | 1 | 0.37% |
Viresh Kumar | 6 | 0.04% | 1 | 0.37% |
Marcus Huewe | 6 | 0.04% | 1 | 0.37% |
Krishna Kumar | 6 | 0.04% | 1 | 0.37% |
Li RongQing | 6 | 0.04% | 1 | 0.37% |
Octavian Purdila | 5 | 0.03% | 1 | 0.37% |
Amos Waterland | 5 | 0.03% | 1 | 0.37% |
Tejun Heo | 5 | 0.03% | 3 | 1.12% |
Alexey Kuznetsov | 5 | 0.03% | 1 | 0.37% |
Florian Westphal | 5 | 0.03% | 1 | 0.37% |
Greg Rose | 5 | 0.03% | 1 | 0.37% |
Bob Gilligan | 4 | 0.02% | 1 | 0.37% |
Jason A. Donenfeld | 4 | 0.02% | 1 | 0.37% |
Harald Welte | 4 | 0.02% | 1 | 0.37% |
Wang Chen | 3 | 0.02% | 1 | 0.37% |
Vignesh Babu | 3 | 0.02% | 1 | 0.37% |
Shirley Ma | 3 | 0.02% | 1 | 0.37% |
John Hawkes | 3 | 0.02% | 1 | 0.37% |
Paulo Marques | 3 | 0.02% | 1 | 0.37% |
Tobias Klauser | 2 | 0.01% | 1 | 0.37% |
Aruna-Hewapathirane | 2 | 0.01% | 1 | 0.37% |
Greg Banks | 2 | 0.01% | 1 | 0.37% |
Hannes Frederic Sowa | 1 | 0.01% | 1 | 0.37% |
Junwei (Martin) Zhang | 1 | 0.01% | 1 | 0.37% |
Brian Haley | 1 | 0.01% | 1 | 0.37% |
Al Viro | 1 | 0.01% | 1 | 0.37% |
Pablo Neira Ayuso | 1 | 0.01% | 1 | 0.37% |
Kamezawa Hiroyuki | 1 | 0.01% | 1 | 0.37% |
Linus Torvalds | 1 | 0.01% | 1 | 0.37% |
Jun Zhao | 1 | 0.01% | 1 | 0.37% |
Alan Cox | 1 | 0.01% | 1 | 0.37% |
Hiroaki SHIMODA | 1 | 0.01% | 1 | 0.37% |
He Chunhui | 1 | 0.01% | 1 | 0.37% |
Total | 16858 | 100.00% | 268 | 100.00% |
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