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netfilter: ipset: bitmap:ip,mac type requires "src" for MAC

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Enforce that the second "src/dst" parameter of the set match and SET target
must be "src", because we have access to the source MAC only in the packet.
The previous behaviour, that the type required the second parameter
but actually ignored the value was counter-intuitive and confusing.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Jozsef Kadlecsik 2011-04-13 13:43:23 +02:00 committed by Patrick McHardy
parent b32e3dc786
commit 0e8a835aa5
1 changed files with 4 additions and 0 deletions
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4
net/netfilter/ipset/ip_set_bitmap_ipmac.c
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@ -343,6 +343,10 @@ bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
ipset_adtfn adtfn = set->variant->adt[adt];
struct ipmac data;
/* MAC can be src only */
if (!(flags & IPSET_DIM_TWO_SRC))
return 0;
data.id = ntohl(ip4addr(skb, flags & IPSET_DIM_ONE_SRC));
if (data.id < map->first_ip || data.id > map->last_ip)
return -IPSET_ERR_BITMAP_RANGE;