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,
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,
{
const struct xt_helper_info *info = matchinfo;
struct nf_conn *ct;
+ struct nf_conn_help *master_help;
enum ip_conntrack_info ctinfo;
int ret = info->invert;
}
read_lock_bh(&nf_conntrack_lock);
- if (!ct->master->helper) {
+ master_help = nfct_help(ct->master);
+ if (!master_help || !master_help->helper) {
DEBUGP("xt_helper: master ct %p has no helper\n",
exp->expectant);
goto out_unlock;
if (info->name[0] == '\0')
ret ^= 1;
else
- ret ^= !strncmp(ct->master->helper->name, info->name,
- strlen(ct->master->helper->name));
+ ret ^= !strncmp(master_help->helper->name, info->name,
+ strlen(master_help->helper->name));
out_unlock:
read_unlock_bh(&nf_conntrack_lock);
return ret;
static int check(const char *tablename,
const void *inf,
+ const struct xt_match *match,
void *matchinfo,
unsigned int matchsize,
unsigned int hook_mask)
struct xt_helper_info *info = matchinfo;
info->name[29] = '\0';
-
- /* verify size */
- if (matchsize != XT_ALIGN(sizeof(struct xt_helper_info)))
- return 0;
-
return 1;
}
static struct xt_match helper_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
.me = THIS_MODULE,
};
static struct xt_match helper6_match = {
.name = "helper",
- .match = &match,
- .checkentry = &check,
+ .match = match,
+ .matchsize = sizeof(struct xt_helper_info),
+ .checkentry = check,
.me = THIS_MODULE,
};