diff options
author | Florian Westphal <fw@strlen.de> | 2012-11-06 17:06:39 +0100 |
---|---|---|
committer | Florian Westphal <fw@strlen.de> | 2013-05-06 21:34:15 +0200 |
commit | 6510a98f4139f112a0c76c71ff889ef93eac41fb (patch) | |
tree | 01e2ee90772ff378629bd889d51a509a26d3098e /src/conntrack/setter.c | |
parent | 013a5284c901a6ce80320f499685b89d15eeed9e (diff) |
api: add connlabel api and attribute
adds new labelmap api to create a name <-> bit mapping
from a text file (default: /etc/xtables/connlabel.conf).
nfct_labelmap_new(filename) is used to create the map,
nfct_labelmap_destroy() releases the resources allocated for the map.
Two functions are added to make map lookups:
nfct_labelmap_get_name(map, bit) returns the name of a bit,
nfct_labelmap_get_bit returns the bit associated with a name.
The connlabel attribute is represented by a nfct_bitmask object, the
nfct_bitmask api can be used to test/set/get individual bits
("labels").
The exisiting nfct_attr_get/set interfaces can be used to read or
replace the existing labels associated with a conntrack with a new set.
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'src/conntrack/setter.c')
-rw-r--r-- | src/conntrack/setter.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/conntrack/setter.c b/src/conntrack/setter.c index dbcd68e..8879f02 100644 --- a/src/conntrack/setter.c +++ b/src/conntrack/setter.c @@ -421,6 +421,17 @@ retry: } static void +set_attr_connlabels(struct nf_conntrack *ct, const void *value, size_t len) +{ + if (ct->connlabels == value) + return; + + if (ct->connlabels) + nfct_bitmask_destroy(ct->connlabels); + ct->connlabels = (void *) value; +} + +static void set_attr_do_nothing(struct nf_conntrack *ct, const void *value, size_t len) {} const set_attr set_attr_array[ATTR_MAX] = { @@ -490,4 +501,5 @@ const set_attr set_attr_array[ATTR_MAX] = { [ATTR_TIMESTAMP_START] = set_attr_do_nothing, [ATTR_TIMESTAMP_STOP] = set_attr_do_nothing, [ATTR_HELPER_INFO] = set_attr_helper_info, + [ATTR_CONNLABELS] = set_attr_connlabels, }; |