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[SCTP]: Eliminate some pointer attributions to the skb layer headers 

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-13 17:17:10 -03:00 committed by David S. Miller
parent bd82393ca2
commit a27ef749e7
2 changed files with 6 additions and 7 deletions
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8
net/sctp/input.c
View File

@ -506,7 +506,7 @@ void sctp_err_finish(struct sock *sk, struct sctp_association *asoc)
void sctp_v4_err(struct sk_buff *skb, __u32 info)
{
struct iphdr *iph = (struct iphdr *)skb->data;
struct sctphdr *sh = (struct sctphdr *)(skb->data + (iph->ihl <<2));
const int ihlen = iph->ihl * 4;
const int type = icmp_hdr(skb)->type;
const int code = icmp_hdr(skb)->code;
struct sock *sk;
@ -516,7 +516,7 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
char *saveip, *savesctp;
int err;
if (skb->len < ((iph->ihl << 2) + 8)) {
if (skb->len < ihlen + 8) {
ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
return;
}
@ -525,8 +525,8 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
saveip = skb->nh.raw;
savesctp = skb->h.raw;
skb_reset_network_header(skb);
skb->h.raw = (char *)sh;
sk = sctp_err_lookup(AF_INET, skb, sh, &asoc, &transport);
skb_set_transport_header(skb, ihlen);
sk = sctp_err_lookup(AF_INET, skb, sctp_hdr(skb), &asoc, &transport);
/* Put back, the original pointers. */
skb->nh.raw = saveip;
skb->h.raw = savesctp;

5
net/sctp/ipv6.c
View File

@ -122,7 +122,6 @@ SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
int type, int code, int offset, __be32 info)
{
struct inet6_dev *idev;
struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
struct sock *sk;
struct sctp_association *asoc;
struct sctp_transport *transport;
@ -136,8 +135,8 @@ SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
saveip = skb->nh.raw;
savesctp = skb->h.raw;
skb_reset_network_header(skb);
skb->h.raw = (char *)sh;
sk = sctp_err_lookup(AF_INET6, skb, sh, &asoc, &transport);
skb_set_transport_header(skb, offset);
sk = sctp_err_lookup(AF_INET6, skb, sctp_hdr(skb), &asoc, &transport);
/* Put back, the original pointers. */
skb->nh.raw = saveip;
skb->h.raw = savesctp;