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authorDavid S. Miller <davem@davemloft.net>2012-03-29 13:11:39 +0400
committerDavid S. Miller <davem@davemloft.net>2012-04-02 02:11:37 +0400
commit1b34ec43c9b3de44a5420841ab293d1b2035a94c (patch)
tree8d6cf966c813e0e61001655179b5ef8e5f1b54b3 /net/sched/em_meta.c
parent9360ffd1859720f6520cf59241909b74dae369d0 (diff)
downloadlinux-1b34ec43c9b3de44a5420841ab293d1b2035a94c.tar.xz
pkt_sched: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error prone and make code hard to audit. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/em_meta.c')
-rw-r--r--net/sched/em_meta.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 1363bf14e61b..4790c696cbce 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -585,8 +585,9 @@ static void meta_var_apply_extras(struct meta_value *v,
static int meta_var_dump(struct sk_buff *skb, struct meta_value *v, int tlv)
{
- if (v->val && v->len)
- NLA_PUT(skb, tlv, v->len, (void *) v->val);
+ if (v->val && v->len &&
+ nla_put(skb, tlv, v->len, (void *) v->val))
+ goto nla_put_failure;
return 0;
nla_put_failure:
@@ -636,10 +637,13 @@ static void meta_int_apply_extras(struct meta_value *v,
static int meta_int_dump(struct sk_buff *skb, struct meta_value *v, int tlv)
{
- if (v->len == sizeof(unsigned long))
- NLA_PUT(skb, tlv, sizeof(unsigned long), &v->val);
- else if (v->len == sizeof(u32))
- NLA_PUT_U32(skb, tlv, v->val);
+ if (v->len == sizeof(unsigned long)) {
+ if (nla_put(skb, tlv, sizeof(unsigned long), &v->val))
+ goto nla_put_failure;
+ } else if (v->len == sizeof(u32)) {
+ if (nla_put_u32(skb, tlv, v->val))
+ goto nla_put_failure;
+ }
return 0;
@@ -831,7 +835,8 @@ static int em_meta_dump(struct sk_buff *skb, struct tcf_ematch *em)
memcpy(&hdr.left, &meta->lvalue.hdr, sizeof(hdr.left));
memcpy(&hdr.right, &meta->rvalue.hdr, sizeof(hdr.right));
- NLA_PUT(skb, TCA_EM_META_HDR, sizeof(hdr), &hdr);
+ if (nla_put(skb, TCA_EM_META_HDR, sizeof(hdr), &hdr))
+ goto nla_put_failure;
ops = meta_type_ops(&meta->lvalue);
if (ops->dump(skb, &meta->lvalue, TCA_EM_META_LVALUE) < 0 ||