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Diffstat (limited to 'net/ipv6/icmp.c')
-rw-r--r--net/ipv6/icmp.c48
1 files changed, 28 insertions, 20 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index edfe98bf64c3..e9bcce9e7bdf 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -68,6 +68,7 @@
#include <asm/system.h>
DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics) __read_mostly;
+EXPORT_SYMBOL(icmpv6_statistics);
/*
* The ICMP socket(s). This is the most convenient way to flow control
@@ -128,9 +129,9 @@ void icmpv6_param_prob(struct sk_buff *skb, int code, int pos)
static int is_ineligible(struct sk_buff *skb)
{
- int ptr = (u8*)(skb->nh.ipv6h+1) - skb->data;
+ int ptr = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
int len = skb->len - ptr;
- __u8 nexthdr = skb->nh.ipv6h->nexthdr;
+ __u8 nexthdr = ipv6_hdr(skb)->nexthdr;
if (len < 0)
return 1;
@@ -205,7 +206,7 @@ static __inline__ int opt_unrec(struct sk_buff *skb, __u32 offset)
{
u8 _optval, *op;
- offset += skb->nh.raw - skb->data;
+ offset += skb_network_offset(skb);
op = skb_header_pointer(skb, offset, sizeof(_optval), &_optval);
if (op == NULL)
return 1;
@@ -221,7 +222,7 @@ static int icmpv6_push_pending_frames(struct sock *sk, struct flowi *fl, struct
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
goto out;
- icmp6h = (struct icmp6hdr*) skb->h.raw;
+ icmp6h = icmp6_hdr(skb);
memcpy(icmp6h, thdr, sizeof(struct icmp6hdr));
icmp6h->icmp6_cksum = 0;
@@ -274,7 +275,7 @@ static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, st
#ifdef CONFIG_IPV6_MIP6
static void mip6_addr_swap(struct sk_buff *skb)
{
- struct ipv6hdr *iph = skb->nh.ipv6h;
+ struct ipv6hdr *iph = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
struct ipv6_destopt_hao *hao;
struct in6_addr tmp;
@@ -283,7 +284,8 @@ static void mip6_addr_swap(struct sk_buff *skb)
if (opt->dsthao) {
off = ipv6_find_tlv(skb, opt->dsthao, IPV6_TLV_HAO);
if (likely(off >= 0)) {
- hao = (struct ipv6_destopt_hao *)(skb->nh.raw + off);
+ hao = (struct ipv6_destopt_hao *)
+ (skb_network_header(skb) + off);
ipv6_addr_copy(&tmp, &iph->saddr);
ipv6_addr_copy(&iph->saddr, &hao->addr);
ipv6_addr_copy(&hao->addr, &tmp);
@@ -301,7 +303,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
struct net_device *dev)
{
struct inet6_dev *idev = NULL;
- struct ipv6hdr *hdr = skb->nh.ipv6h;
+ struct ipv6hdr *hdr = ipv6_hdr(skb);
struct sock *sk;
struct ipv6_pinfo *np;
struct in6_addr *saddr = NULL;
@@ -315,7 +317,8 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
int hlimit, tclass;
int err = 0;
- if ((u8*)hdr < skb->head || (u8*)(hdr+1) > skb->tail)
+ if ((u8 *)hdr < skb->head ||
+ (skb->network_header + sizeof(*hdr)) > skb->tail)
return;
/*
@@ -430,7 +433,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
tclass = 0;
msg.skb = skb;
- msg.offset = skb->nh.raw - skb->data;
+ msg.offset = skb_network_offset(skb);
msg.type = type;
len = skb->len - msg.offset;
@@ -466,13 +469,15 @@ out:
icmpv6_xmit_unlock();
}
+EXPORT_SYMBOL(icmpv6_send);
+
static void icmpv6_echo_reply(struct sk_buff *skb)
{
struct sock *sk;
struct inet6_dev *idev;
struct ipv6_pinfo *np;
struct in6_addr *saddr = NULL;
- struct icmp6hdr *icmph = (struct icmp6hdr *) skb->h.raw;
+ struct icmp6hdr *icmph = icmp6_hdr(skb);
struct icmp6hdr tmp_hdr;
struct flowi fl;
struct icmpv6_msg msg;
@@ -481,7 +486,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
int hlimit;
int tclass;
- saddr = &skb->nh.ipv6h->daddr;
+ saddr = &ipv6_hdr(skb)->daddr;
if (!ipv6_unicast_destination(skb))
saddr = NULL;
@@ -491,7 +496,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
memset(&fl, 0, sizeof(fl));
fl.proto = IPPROTO_ICMPV6;
- ipv6_addr_copy(&fl.fl6_dst, &skb->nh.ipv6h->saddr);
+ ipv6_addr_copy(&fl.fl6_dst, &ipv6_hdr(skb)->saddr);
if (saddr)
ipv6_addr_copy(&fl.fl6_src, saddr);
fl.oif = skb->dev->ifindex;
@@ -579,8 +584,8 @@ static void icmpv6_notify(struct sk_buff *skb, int type, int code, __be32 info)
if (!pskb_may_pull(skb, inner_offset+8))
return;
- saddr = &skb->nh.ipv6h->saddr;
- daddr = &skb->nh.ipv6h->daddr;
+ saddr = &ipv6_hdr(skb)->saddr;
+ daddr = &ipv6_hdr(skb)->daddr;
/* BUGGG_FUTURE: we should try to parse exthdrs in this packet.
Without this we will not able f.e. to make source routed
@@ -624,8 +629,8 @@ static int icmpv6_rcv(struct sk_buff **pskb)
ICMP6_INC_STATS_BH(idev, ICMP6_MIB_INMSGS);
- saddr = &skb->nh.ipv6h->saddr;
- daddr = &skb->nh.ipv6h->daddr;
+ saddr = &ipv6_hdr(skb)->saddr;
+ daddr = &ipv6_hdr(skb)->daddr;
/* Perform checksum. */
switch (skb->ip_summed) {
@@ -647,7 +652,7 @@ static int icmpv6_rcv(struct sk_buff **pskb)
if (!pskb_pull(skb, sizeof(struct icmp6hdr)))
goto discard_it;
- hdr = (struct icmp6hdr *) skb->h.raw;
+ hdr = icmp6_hdr(skb);
type = hdr->icmp6_type;
@@ -673,7 +678,7 @@ static int icmpv6_rcv(struct sk_buff **pskb)
*/
if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
goto discard_it;
- hdr = (struct icmp6hdr *) skb->h.raw;
+ hdr = icmp6_hdr(skb);
orig_hdr = (struct ipv6hdr *) (hdr + 1);
rt6_pmtu_discovery(&orig_hdr->daddr, &orig_hdr->saddr, dev,
ntohl(hdr->icmp6_mtu));
@@ -727,7 +732,8 @@ static int icmpv6_rcv(struct sk_buff **pskb)
*/
icmpv6_notify(skb, type, hdr->icmp6_code, hdr->icmp6_mtu);
- };
+ }
+
kfree_skb(skb);
return 0;
@@ -860,11 +866,13 @@ int icmpv6_err_convert(int type, int code, int *err)
case ICMPV6_TIME_EXCEED:
*err = EHOSTUNREACH;
break;
- };
+ }
return fatal;
}
+EXPORT_SYMBOL(icmpv6_err_convert);
+
#ifdef CONFIG_SYSCTL
ctl_table ipv6_icmp_table[] = {
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.