int offset,
int *hotdrop)
{
- struct ip_auth_hdr ah;
+ struct ip_auth_hdr _ahdr, *ah;
const struct ipt_ah *ahinfo = matchinfo;
/* Must not be a fragment. */
if (offset)
return 0;
- if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &ah, sizeof(ah)) < 0) {
+ ah = skb_header_pointer(skb, skb->nh.iph->ihl * 4,
+ sizeof(_ahdr), &_ahdr);
+ if (ah == NULL) {
/* We've been asked to examine this packet, and we
- can't. Hence, no choice but to drop. */
+ * can't. Hence, no choice but to drop.
+ */
duprintf("Dropping evil AH tinygram.\n");
*hotdrop = 1;
return 0;
}
return spi_match(ahinfo->spis[0], ahinfo->spis[1],
- ntohl(ah.spi),
+ ntohl(ah->spi),
!!(ahinfo->invflags & IPT_AH_INV_SPI));
}