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-rw-r--r--include/net/raw.h19
-rw-r--r--net/ipv4/icmp.c15
-rw-r--r--net/ipv4/ip_input.c16
-rw-r--r--net/ipv4/raw.c53
4 files changed, 56 insertions, 47 deletions
diff --git a/include/net/raw.h b/include/net/raw.h
index e4af5978194..7fc3c770f17 100644
--- a/include/net/raw.h
+++ b/include/net/raw.h
@@ -22,23 +22,10 @@
extern struct proto raw_prot;
-extern void raw_err(struct sock *, struct sk_buff *, u32 info);
-extern int raw_rcv(struct sock *, struct sk_buff *);
-
-/* Note: v4 ICMP wants to get at this stuff, if you change the
- * hashing mechanism, make sure you update icmp.c as well.
- */
-#define RAWV4_HTABLE_SIZE MAX_INET_PROTOS
-extern struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE];
-
-extern rwlock_t raw_v4_lock;
+void raw_icmp_error(struct sk_buff *, int, u32);
+int raw_local_deliver(struct sk_buff *, int);
-
-extern struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num,
- __be32 raddr, __be32 laddr,
- int dif);
-
-extern int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash);
+extern int raw_rcv(struct sock *, struct sk_buff *);
#ifdef CONFIG_PROC_FS
extern int raw_proc_init(void);
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 82baea02648..13d74598d3e 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -603,7 +603,6 @@ static void icmp_unreach(struct sk_buff *skb)
struct icmphdr *icmph;
int hash, protocol;
struct net_protocol *ipprot;
- struct sock *raw_sk;
u32 info = 0;
/*
@@ -697,21 +696,9 @@ static void icmp_unreach(struct sk_buff *skb)
/*
* Deliver ICMP message to raw sockets. Pretty useless feature?
*/
+ raw_icmp_error(skb, protocol, info);
- /* Note: See raw.c and net/raw.h, RAWV4_HTABLE_SIZE==MAX_INET_PROTOS */
hash = protocol & (MAX_INET_PROTOS - 1);
- read_lock(&raw_v4_lock);
- if ((raw_sk = sk_head(&raw_v4_htable[hash])) != NULL) {
- while ((raw_sk = __raw_v4_lookup(raw_sk, protocol, iph->daddr,
- iph->saddr,
- skb->dev->ifindex)) != NULL) {
- raw_err(raw_sk, skb, info);
- raw_sk = sk_next(raw_sk);
- iph = (struct iphdr *)skb->data;
- }
- }
- read_unlock(&raw_v4_lock);
-
rcu_read_lock();
ipprot = rcu_dereference(inet_protos[hash]);
if (ipprot && ipprot->err_handler)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 4068e178d74..65631391d47 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -204,22 +204,14 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
rcu_read_lock();
{
- /* Note: See raw.c and net/raw.h, RAWV4_HTABLE_SIZE==MAX_INET_PROTOS */
int protocol = ip_hdr(skb)->protocol;
- int hash;
- struct sock *raw_sk;
+ int hash, raw;
struct net_protocol *ipprot;
resubmit:
- hash = protocol & (MAX_INET_PROTOS - 1);
- raw_sk = sk_head(&raw_v4_htable[hash]);
-
- /* If there maybe a raw socket we must check - if not we
- * don't care less
- */
- if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
- raw_sk = NULL;
+ raw = raw_local_deliver(skb, protocol);
+ hash = protocol & (MAX_INET_PROTOS - 1);
if ((ipprot = rcu_dereference(inet_protos[hash])) != NULL) {
int ret;
@@ -237,7 +229,7 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
}
IP_INC_STATS_BH(IPSTATS_MIB_INDELIVERS);
} else {
- if (!raw_sk) {
+ if (!raw) {
if (xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
IP_INC_STATS_BH(IPSTATS_MIB_INUNKNOWNPROTOS);
icmp_send(skb, ICMP_DEST_UNREACH,
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index b80987d2fc5..8a506618b91 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -80,8 +80,10 @@
#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
-struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE];
-DEFINE_RWLOCK(raw_v4_lock);
+#define RAWV4_HTABLE_SIZE MAX_INET_PROTOS
+
+static struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE];
+static DEFINE_RWLOCK(raw_v4_lock);
static void raw_v4_hash(struct sock *sk)
{
@@ -102,7 +104,7 @@ static void raw_v4_unhash(struct sock *sk)
write_unlock_bh(&raw_v4_lock);
}
-struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num,
+static struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num,
__be32 raddr, __be32 laddr,
int dif)
{
@@ -150,7 +152,7 @@ static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
* RFC 1122: SHOULD pass TOS value up to the transport layer.
* -> It does. And not only TOS, but all IP header.
*/
-int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
+static int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
{
struct sock *sk;
struct hlist_head *head;
@@ -182,7 +184,25 @@ out:
return delivered;
}
-void raw_err (struct sock *sk, struct sk_buff *skb, u32 info)
+int raw_local_deliver(struct sk_buff *skb, int protocol)
+{
+ int hash;
+ struct sock *raw_sk;
+
+ hash = protocol & (RAWV4_HTABLE_SIZE - 1);
+ raw_sk = sk_head(&raw_v4_htable[hash]);
+
+ /* If there maybe a raw socket we must check - if not we
+ * don't care less
+ */
+ if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
+ raw_sk = NULL;
+
+ return raw_sk != NULL;
+
+}
+
+static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
{
struct inet_sock *inet = inet_sk(sk);
const int type = icmp_hdr(skb)->type;
@@ -236,6 +256,29 @@ void raw_err (struct sock *sk, struct sk_buff *skb, u32 info)
}
}
+void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
+{
+ int hash;
+ struct sock *raw_sk;
+ struct iphdr *iph;
+
+ hash = protocol & (RAWV4_HTABLE_SIZE - 1);
+
+ read_lock(&raw_v4_lock);
+ raw_sk = sk_head(&raw_v4_htable[hash]);
+ if (raw_sk != NULL) {
+ iph = (struct iphdr *)skb->data;
+ while ((raw_sk = __raw_v4_lookup(raw_sk, protocol, iph->daddr,
+ iph->saddr,
+ skb->dev->ifindex)) != NULL) {
+ raw_err(raw_sk, skb, info);
+ raw_sk = sk_next(raw_sk);
+ iph = (struct iphdr *)skb->data;
+ }
+ }
+ read_unlock(&raw_v4_lock);
+}
+
static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
{
/* Charge it to the socket. */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 18:23:55 +0000