tree e0e4881913acb233f6ea83d93eb69da446084101
parent 7266507d89991fa1e989283e4e032c6d9357fe26
author Florian Westphal <fw@strlen.de> 1357885844 +0000
committer Pablo Neira Ayuso <pablo@netfilter.org> 1358465295 +0100

netfilter: add connlabel conntrack extension

similar to connmarks, except labels are bit-based; i.e.
all labels may be attached to a flow at the same time.

Up to 128 labels are supported.  Supporting more labels
is possible, but requires increasing the ct offset delta
from u8 to u16 type due to increased extension sizes.

Mapping of bit-identifier to label name is done in userspace.

The extension is enabled at run-time once "-m connlabel" netfilter
rules are added.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>