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authorFlorian Westphal <fw@strlen.de>2016-04-12 18:14:25 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2016-04-18 20:39:48 +0200
commitadff6c65600000ec2bb71840c943ee12668080f5 (patch)
tree4d997d6be491c820c95302299034d62f55c8387d /net/netfilter/nft_ct.c
parent5a8145f7b22269adaf9e98b160a20486d1ad5669 (diff)
netfilter: connlabels: change nf_connlabels_get bit arg to 'highest used'
nf_connlabel_set() takes the bit number that we would like to set. nf_connlabels_get() however took the number of bits that we want to support. So e.g. nf_connlabels_get(32) support bits 0 to 31, but not 32. This changes nf_connlabels_get() to take the highest bit that we want to set. Callers then don't have to cope with a potential integer wrap when using nf_connlabels_get(bit + 1) anymore. Current callers are fine, this change is only to make folloup nft ct label set support simpler. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nft_ct.c')
-rw-r--r--net/netfilter/nft_ct.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
index d4a4619fcebc..25998facefd0 100644
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c
@@ -484,6 +484,8 @@ static struct nft_expr_type nft_ct_type __read_mostly = {
static int __init nft_ct_module_init(void)
{
+ BUILD_BUG_ON(NF_CT_LABELS_MAX_SIZE > NFT_REG_SIZE);
+
return nft_register_expr(&nft_ct_type);
}