match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
- const struct xt_match *match,
const void *matchinfo,
int offset,
unsigned int protoff,
struct frag_hdr _frag, *fh;
const struct ip6t_frag *fraginfo = matchinfo;
unsigned int ptr;
+ int err;
- if (ipv6_find_hdr(skb, &ptr, NEXTHDR_FRAGMENT, NULL) < 0)
+ err = ipv6_find_hdr(skb, &ptr, NEXTHDR_FRAGMENT, NULL);
+ if (err < 0) {
+ if (err != -ENOENT)
+ *hotdrop = 1;
return 0;
+ }
fh = skb_header_pointer(skb, ptr, sizeof(_frag), &_frag);
if (fh == NULL) {
static int
checkentry(const char *tablename,
const void *ip,
- const struct xt_match *match,
void *matchinfo,
unsigned int matchinfosize,
unsigned int hook_mask)
{
const struct ip6t_frag *fraginfo = matchinfo;
+ if (matchinfosize != IP6T_ALIGN(sizeof(struct ip6t_frag))) {
+ DEBUGP("ip6t_frag: matchsize %u != %u\n",
+ matchinfosize, IP6T_ALIGN(sizeof(struct ip6t_frag)));
+ return 0;
+ }
if (fraginfo->invflags & ~IP6T_FRAG_INV_MASK) {
DEBUGP("ip6t_frag: unknown flags %X\n", fraginfo->invflags);
return 0;
}
+
return 1;
}
static struct ip6t_match frag_match = {
.name = "frag",
- .match = match,
- .matchsize = sizeof(struct ip6t_frag),
- .checkentry = checkentry,
+ .match = &match,
+ .checkentry = &checkentry,
.me = THIS_MODULE,
};
-static int __init ip6t_frag_init(void)
+static int __init init(void)
{
return ip6t_register_match(&frag_match);
}
-static void __exit ip6t_frag_fini(void)
+static void __exit cleanup(void)
{
ip6t_unregister_match(&frag_match);
}
-module_init(ip6t_frag_init);
-module_exit(ip6t_frag_fini);
+module_init(init);
+module_exit(cleanup);