goto out_entries;
}
- n = kmem_cache_alloc(tbl->kmem_cachep, SLAB_ATOMIC);
+ n = kmem_cache_alloc(tbl->kmem_cachep, GFP_ATOMIC);
if (!n)
goto out_entries;
while ((hh = neigh->hh) != NULL) {
neigh->hh = hh->hh_next;
hh->hh_next = NULL;
- write_lock_bh(&hh->hh_lock);
+
+ write_seqlock_bh(&hh->hh_lock);
hh->hh_output = neigh_blackhole;
- write_unlock_bh(&hh->hh_lock);
+ write_sequnlock_bh(&hh->hh_lock);
if (atomic_dec_and_test(&hh->hh_refcnt))
kfree(hh);
}
if (update) {
for (hh = neigh->hh; hh; hh = hh->hh_next) {
- write_lock_bh(&hh->hh_lock);
+ write_seqlock_bh(&hh->hh_lock);
update(hh, neigh->dev, neigh->ha);
- write_unlock_bh(&hh->hh_lock);
+ write_sequnlock_bh(&hh->hh_lock);
}
}
}
break;
if (!hh && (hh = kzalloc(sizeof(*hh), GFP_ATOMIC)) != NULL) {
- rwlock_init(&hh->hh_lock);
+ seqlock_init(&hh->hh_lock);
hh->hh_type = protocol;
atomic_set(&hh->hh_refcnt, 0);
hh->hh_next = NULL;
struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
struct neigh_table *tbl)
{
- struct neigh_parms *p = kmalloc(sizeof(*p), GFP_KERNEL);
+ struct neigh_parms *p = kmemdup(&tbl->parms, sizeof(*p), GFP_KERNEL);
if (p) {
- memcpy(p, &tbl->parms, sizeof(*p));
p->tbl = tbl;
atomic_set(&p->refcnt, 1);
INIT_RCU_HEAD(&p->rcu_head);
#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_ARPD
+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 */
+}
+
static void __neigh_notify(struct neighbour *n, int type, int flags)
{
struct sk_buff *skb;
int err = -ENOBUFS;
- skb = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
+ skb = nlmsg_new(neigh_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
goto errout;
err = neigh_fill_info(skb, n, 0, 0, type, flags);
- if (err < 0) {
- kfree_skb(skb);
- goto errout;
- }
+ /* failure implies BUG in neigh_nlmsg_size() */
+ BUG_ON(err < 0);
err = rtnl_notify(skb, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
errout:
int p_id, int pdev_id, char *p_name,
proc_handler *handler, ctl_handler *strategy)
{
- struct neigh_sysctl_table *t = kmalloc(sizeof(*t), GFP_KERNEL);
+ struct neigh_sysctl_table *t = kmemdup(&neigh_sysctl_template,
+ sizeof(*t), GFP_KERNEL);
const char *dev_name_source = NULL;
char *dev_name = NULL;
int err = 0;
if (!t)
return -ENOBUFS;
- memcpy(t, &neigh_sysctl_template, sizeof(*t));
t->neigh_vars[0].data = &p->mcast_probes;
t->neigh_vars[1].data = &p->ucast_probes;
t->neigh_vars[2].data = &p->app_probes;