if (em->ops == NULL) {
err = -ENOENT;
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
__rtnl_unlock();
request_module("ematch-kind-%u", em_hdr->kind);
rtnl_lock();
return err;
}
+static const struct nla_policy em_policy[TCA_EMATCH_TREE_MAX + 1] = {
+ [TCA_EMATCH_TREE_HDR] = { .len = sizeof(struct tcf_ematch_tree_hdr) },
+ [TCA_EMATCH_TREE_LIST] = { .type = NLA_NESTED },
+};
+
/**
* tcf_em_tree_validate - validate ematch config TLV and build ematch tree
*
int tcf_em_tree_validate(struct tcf_proto *tp, struct nlattr *nla,
struct tcf_ematch_tree *tree)
{
- int idx, list_len, matches_len, err = -EINVAL;
+ int idx, list_len, matches_len, err;
struct nlattr *tb[TCA_EMATCH_TREE_MAX + 1];
struct nlattr *rt_match, *rt_hdr, *rt_list;
struct tcf_ematch_tree_hdr *tree_hdr;
struct tcf_ematch *em;
- if (!nla) {
- memset(tree, 0, sizeof(*tree));
+ memset(tree, 0, sizeof(*tree));
+ if (!nla)
return 0;
- }
- if (nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, NULL) < 0)
+ err = nla_parse_nested(tb, TCA_EMATCH_TREE_MAX, nla, em_policy);
+ if (err < 0)
goto errout;
+ err = -EINVAL;
rt_hdr = tb[TCA_EMATCH_TREE_HDR];
rt_list = tb[TCA_EMATCH_TREE_LIST];
if (rt_hdr == NULL || rt_list == NULL)
goto errout;
- if (nla_len(rt_hdr) < sizeof(*tree_hdr) ||
- nla_len(rt_list) < sizeof(*rt_match))
- goto errout;
-
tree_hdr = nla_data(rt_hdr);
memcpy(&tree->hdr, tree_hdr, sizeof(*tree_hdr));
if (em->ops) {
if (em->ops->destroy)
em->ops->destroy(tp, em);
- else if (!tcf_em_is_simple(em) && em->data)
+ else if (!tcf_em_is_simple(em))
kfree((void *) em->data);
module_put(em->ops->owner);
}
tree->hdr.nmatches = 0;
kfree(tree->matches);
+ tree->matches = NULL;
}
EXPORT_SYMBOL(tcf_em_tree_destroy);
{
int i;
u8 *tail;
- struct nlattr *top_start = (struct nlattr *)skb_tail_pointer(skb);
+ struct nlattr *top_start;
struct nlattr *list_start;
- NLA_PUT(skb, tlv, 0, NULL);
+ top_start = nla_nest_start(skb, tlv);
+ if (top_start == NULL)
+ goto nla_put_failure;
+
NLA_PUT(skb, TCA_EMATCH_TREE_HDR, sizeof(tree->hdr), &tree->hdr);
- list_start = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_EMATCH_TREE_LIST, 0, NULL);
+ list_start = nla_nest_start(skb, TCA_EMATCH_TREE_LIST);
+ if (list_start == NULL)
+ goto nla_put_failure;
tail = skb_tail_pointer(skb);
for (i = 0; i < tree->hdr.nmatches; i++) {
match_start->nla_len = tail - (u8 *)match_start;
}
- list_start->nla_len = tail - (u8 *)list_start;
- top_start->nla_len = tail - (u8 *)top_start;
+ nla_nest_end(skb, list_start);
+ nla_nest_end(skb, top_start);
return 0;