summaryrefslogtreecommitdiff
path: root/net/ipv4/raw.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv4/raw.c')
-rw-r--r--net/ipv4/raw.c83
1 files changed, 38 insertions, 45 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 05e0de4a7c7f..d28bf0b901a2 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -85,20 +85,19 @@ struct raw_frag_vec {
int hlen;
};
-struct raw_hashinfo raw_v4_hashinfo = {
- .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock),
-};
+struct raw_hashinfo raw_v4_hashinfo;
EXPORT_SYMBOL_GPL(raw_v4_hashinfo);
int raw_hash_sk(struct sock *sk)
{
struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
- struct hlist_head *head;
+ struct hlist_nulls_head *hlist;
- head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)];
+ hlist = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)];
write_lock_bh(&h->lock);
- sk_add_node(sk, head);
+ hlist_nulls_add_head_rcu(&sk->sk_nulls_node, hlist);
+ sock_set_flag(sk, SOCK_RCU_FREE);
write_unlock_bh(&h->lock);
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
@@ -111,7 +110,7 @@ void raw_unhash_sk(struct sock *sk)
struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
write_lock_bh(&h->lock);
- if (sk_del_node_init(sk))
+ if (__sk_nulls_del_node_init_rcu(sk))
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
write_unlock_bh(&h->lock);
}
@@ -164,17 +163,16 @@ static int icmp_filter(const struct sock *sk, const struct sk_buff *skb)
static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
{
struct net *net = dev_net(skb->dev);
+ struct hlist_nulls_head *hlist;
+ struct hlist_nulls_node *hnode;
int sdif = inet_sdif(skb);
int dif = inet_iif(skb);
- struct hlist_head *head;
int delivered = 0;
struct sock *sk;
- head = &raw_v4_hashinfo.ht[hash];
- if (hlist_empty(head))
- return 0;
- read_lock(&raw_v4_hashinfo.lock);
- sk_for_each(sk, head) {
+ hlist = &raw_v4_hashinfo.ht[hash];
+ rcu_read_lock();
+ hlist_nulls_for_each_entry(sk, hnode, hlist, sk_nulls_node) {
if (!raw_v4_match(net, sk, iph->protocol,
iph->saddr, iph->daddr, dif, sdif))
continue;
@@ -189,7 +187,7 @@ static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
raw_rcv(sk, clone);
}
}
- read_unlock(&raw_v4_hashinfo.lock);
+ rcu_read_unlock();
return delivered;
}
@@ -265,25 +263,26 @@ static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
{
struct net *net = dev_net(skb->dev);;
+ struct hlist_nulls_head *hlist;
+ struct hlist_nulls_node *hnode;
int dif = skb->dev->ifindex;
int sdif = inet_sdif(skb);
- struct hlist_head *head;
const struct iphdr *iph;
struct sock *sk;
int hash;
hash = protocol & (RAW_HTABLE_SIZE - 1);
- head = &raw_v4_hashinfo.ht[hash];
+ hlist = &raw_v4_hashinfo.ht[hash];
- read_lock(&raw_v4_hashinfo.lock);
- sk_for_each(sk, head) {
+ rcu_read_lock();
+ hlist_nulls_for_each_entry(sk, hnode, hlist, sk_nulls_node) {
iph = (const struct iphdr *)skb->data;
if (!raw_v4_match(net, sk, iph->protocol,
iph->saddr, iph->daddr, dif, sdif))
continue;
raw_err(sk, skb, info);
}
- read_unlock(&raw_v4_hashinfo.lock);
+ rcu_read_unlock();
}
static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
@@ -944,44 +943,41 @@ struct proto raw_prot = {
};
#ifdef CONFIG_PROC_FS
-static struct sock *raw_get_first(struct seq_file *seq)
+static struct sock *raw_get_first(struct seq_file *seq, int bucket)
{
- struct sock *sk;
struct raw_hashinfo *h = pde_data(file_inode(seq->file));
struct raw_iter_state *state = raw_seq_private(seq);
+ struct hlist_nulls_head *hlist;
+ struct hlist_nulls_node *hnode;
+ struct sock *sk;
- for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
+ for (state->bucket = bucket; state->bucket < RAW_HTABLE_SIZE;
++state->bucket) {
- sk_for_each(sk, &h->ht[state->bucket])
+ hlist = &h->ht[state->bucket];
+ hlist_nulls_for_each_entry(sk, hnode, hlist, sk_nulls_node) {
if (sock_net(sk) == seq_file_net(seq))
- goto found;
+ return sk;
+ }
}
- sk = NULL;
-found:
- return sk;
+ return NULL;
}
static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
{
- struct raw_hashinfo *h = pde_data(file_inode(seq->file));
struct raw_iter_state *state = raw_seq_private(seq);
do {
- sk = sk_next(sk);
-try_again:
- ;
+ sk = sk_nulls_next(sk);
} while (sk && sock_net(sk) != seq_file_net(seq));
- if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
- sk = sk_head(&h->ht[state->bucket]);
- goto try_again;
- }
+ if (!sk)
+ return raw_get_first(seq, state->bucket + 1);
return sk;
}
static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
{
- struct sock *sk = raw_get_first(seq);
+ struct sock *sk = raw_get_first(seq, 0);
if (sk)
while (pos && (sk = raw_get_next(seq, sk)) != NULL)
@@ -990,11 +986,9 @@ static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
}
void *raw_seq_start(struct seq_file *seq, loff_t *pos)
- __acquires(&h->lock)
+ __acquires(RCU)
{
- struct raw_hashinfo *h = pde_data(file_inode(seq->file));
-
- read_lock(&h->lock);
+ rcu_read_lock();
return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
}
EXPORT_SYMBOL_GPL(raw_seq_start);
@@ -1004,7 +998,7 @@ void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
struct sock *sk;
if (v == SEQ_START_TOKEN)
- sk = raw_get_first(seq);
+ sk = raw_get_first(seq, 0);
else
sk = raw_get_next(seq, v);
++*pos;
@@ -1013,11 +1007,9 @@ void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
EXPORT_SYMBOL_GPL(raw_seq_next);
void raw_seq_stop(struct seq_file *seq, void *v)
- __releases(&h->lock)
+ __releases(RCU)
{
- struct raw_hashinfo *h = pde_data(file_inode(seq->file));
-
- read_unlock(&h->lock);
+ rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(raw_seq_stop);
@@ -1079,6 +1071,7 @@ static __net_initdata struct pernet_operations raw_net_ops = {
int __init raw_proc_init(void)
{
+
return register_pernet_subsys(&raw_net_ops);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-30 21:34:16 +0300