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[NETFILTER] ctnetlink: add support to change protocol info

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This patch add support to change the state of the private protocol
information via conntrack_netlink.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pablo Neira Ayuso 2005-10-10 21:23:46 -07:00 committed by David S. Miller
parent 3392315375
commit 061cb4a0ec
1 changed files with 37 additions and 0 deletions
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37
net/ipv4/netfilter/ip_conntrack_netlink.c
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@ -949,6 +949,31 @@ ctnetlink_change_timeout(struct ip_conntrack *ct, struct nfattr *cda[])
return 0;
}
static inline int
ctnetlink_change_protoinfo(struct ip_conntrack *ct, struct nfattr *cda[])
{
struct nfattr *tb[CTA_PROTOINFO_MAX], *attr = cda[CTA_PROTOINFO-1];
struct ip_conntrack_protocol *proto;
u_int16_t npt = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum;
int err = 0;
if (nfattr_parse_nested(tb, CTA_PROTOINFO_MAX, attr) < 0)
goto nfattr_failure;
proto = ip_conntrack_proto_find_get(npt);
if (!proto)
return -EINVAL;
if (proto->from_nfattr)
err = proto->from_nfattr(tb, ct);
ip_conntrack_proto_put(proto);
return err;
nfattr_failure:
return -ENOMEM;
}
static int
ctnetlink_change_conntrack(struct ip_conntrack *ct, struct nfattr *cda[])
{
@ -974,6 +999,12 @@ ctnetlink_change_conntrack(struct ip_conntrack *ct, struct nfattr *cda[])
return err;
}
if (cda[CTA_PROTOINFO-1]) {
err = ctnetlink_change_protoinfo(ct, cda);
if (err < 0)
return err;
}
DEBUGP("all done\n");
return 0;
}
@ -1003,6 +1034,12 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
if (err < 0)
goto err;
if (cda[CTA_PROTOINFO-1]) {
err = ctnetlink_change_protoinfo(ct, cda);
if (err < 0)
return err;
}
ct->helper = ip_conntrack_helper_find_get(rtuple);
add_timer(&ct->timeout);