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/*
* (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#include "internal.h"
static void __build_timeout(struct nfnlhdr *req,
size_t size,
const struct nf_expect *exp)
{
nfnl_addattr32(&req->nlh, size, CTA_EXPECT_TIMEOUT,htonl(exp->timeout));
}
int __build_expect(struct nfnl_subsys_handle *ssh,
struct nfnlhdr *req,
size_t size,
u_int16_t type,
u_int16_t flags,
const struct nf_expect *exp)
{
u_int8_t l3num = exp->master.tuple[NFCT_DIR_ORIGINAL].l3protonum;
if (!test_bit(ATTR_ORIG_L3PROTO, exp->master.set)) {
errno = EINVAL;
return -1;
}
memset(req, 0, size);
nfnl_fill_hdr(ssh, &req->nlh, 0, l3num, 0, type, flags);
__build_tuple(req,
size,
&exp->expected.tuple[__DIR_ORIG],
CTA_EXPECT_TUPLE);
/* get and delete only require the expectation tuple */
if (type == IPCTNL_MSG_EXP_GET || type == IPCTNL_MSG_EXP_DELETE)
return 0;
__build_tuple(req,
size,
&exp->master.tuple[__DIR_ORIG],
CTA_EXPECT_MASTER);
__build_tuple(req,
size,
&exp->mask.tuple[__DIR_ORIG],
CTA_EXPECT_MASK);
if (test_bit(ATTR_EXP_TIMEOUT, exp->set))
__build_timeout(req, size, exp);
return 0;
}
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