diff options
author | Holger Eitzenberger <holger@eitzenberger.org> | 2009-03-25 13:24:48 -0400 |
---|---|---|
committer | Patrick McHardy <kaber@trash.net> | 2009-03-25 13:24:48 -0400 |
commit | d0dba7255b541f1651a88e75ebdb20dd45509c2f (patch) | |
tree | db731388062d6b81e73bc9328fdd29e6eb81c509 /include/net/netfilter/nf_conntrack_l3proto.h | |
parent | b8dfe498775de912116f275680ddb57c8799d9ef (diff) |
netfilter: ctnetlink: add callbacks to the per-proto nlattrs
There is added a single callback for the l3 proto helper. The two
callbacks for the l4 protos are necessary because of the general
structure of a ctnetlink event, which is in short:
CTA_TUPLE_ORIG
<l3/l4-proto-attributes>
CTA_TUPLE_REPLY
<l3/l4-proto-attributes>
CTA_ID
...
CTA_PROTOINFO
<l4-proto-attributes>
CTA_TUPLE_MASTER
<l3/l4-proto-attributes>
Therefore the formular is
size := sizeof(generic-nlas) + 3 * sizeof(tuple_nlas) + sizeof(protoinfo_nlas)
Some of the NLAs are optional, e. g. CTA_TUPLE_MASTER, which is only
set if it's an expected connection. But the number of optional NLAs is
small enough to prevent netlink_trim() from reallocating if calculated
properly.
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net/netfilter/nf_conntrack_l3proto.h')
-rw-r--r-- | include/net/netfilter/nf_conntrack_l3proto.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h index 0378676c3dd..9f99d36d5de 100644 --- a/include/net/netfilter/nf_conntrack_l3proto.h +++ b/include/net/netfilter/nf_conntrack_l3proto.h | |||
@@ -53,10 +53,17 @@ struct nf_conntrack_l3proto | |||
53 | int (*tuple_to_nlattr)(struct sk_buff *skb, | 53 | int (*tuple_to_nlattr)(struct sk_buff *skb, |
54 | const struct nf_conntrack_tuple *t); | 54 | const struct nf_conntrack_tuple *t); |
55 | 55 | ||
56 | /* | ||
57 | * Calculate size of tuple nlattr | ||
58 | */ | ||
59 | int (*nlattr_tuple_size)(void); | ||
60 | |||
56 | int (*nlattr_to_tuple)(struct nlattr *tb[], | 61 | int (*nlattr_to_tuple)(struct nlattr *tb[], |
57 | struct nf_conntrack_tuple *t); | 62 | struct nf_conntrack_tuple *t); |
58 | const struct nla_policy *nla_policy; | 63 | const struct nla_policy *nla_policy; |
59 | 64 | ||
65 | size_t nla_size; | ||
66 | |||
60 | #ifdef CONFIG_SYSCTL | 67 | #ifdef CONFIG_SYSCTL |
61 | struct ctl_table_header *ctl_table_header; | 68 | struct ctl_table_header *ctl_table_header; |
62 | struct ctl_path *ctl_table_path; | 69 | struct ctl_path *ctl_table_path; |