1/*-
 2 * Copyright (c) 2015 Dmitry Vagin <daemon.hammer@ya.ru>
 3 * All rights reserved.
 4 *
 5 * Redistribution and use in source and binary forms, with or without
 6 * modification, are permitted provided that the following conditions
 7 * are met:
 8 * 1. Redistributions of source code must retain the above copyright
 9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef _NETGRAPH_NG_CHECKSUM_H_
28#define _NETGRAPH_NG_CHECKSUM_H_
29
30/* Node type name. */
31#define	NG_CHECKSUM_NODE_TYPE	"checksum"
32
33/* Node type cookie. */
34#define	NGM_CHECKSUM_COOKIE	439419912
35
36/* Hook names */
37#define	NG_CHECKSUM_HOOK_IN	"in"
38#define	NG_CHECKSUM_HOOK_OUT	"out"
39
40/* Checksum flags */
41#define NG_CHECKSUM_CSUM_IPV4	(CSUM_IP|CSUM_TCP|CSUM_UDP)
42#define NG_CHECKSUM_CSUM_IPV6	(CSUM_TCP_IPV6|CSUM_UDP_IPV6)
43
44/* Netgraph commands understood by this node type */
45enum {
46	NGM_CHECKSUM_GETDLT = 1,
47	NGM_CHECKSUM_SETDLT,
48	NGM_CHECKSUM_GETCONFIG,
49	NGM_CHECKSUM_SETCONFIG,
50	NGM_CHECKSUM_GETCLR_STATS,
51	NGM_CHECKSUM_GET_STATS,
52	NGM_CHECKSUM_CLR_STATS,
53};
54
55/* Parsing declarations */
56
57#define	NG_CHECKSUM_CONFIG_TYPE {				\
58	{ "csum_flags",		&ng_parse_uint64_type	},	\
59	{ "csum_offload",	&ng_parse_uint64_type	},	\
60	{ NULL }						\
61}
62
63#define	NG_CHECKSUM_STATS_TYPE {				\
64	{ "Received",		&ng_parse_uint64_type	},	\
65	{ "Processed",		&ng_parse_uint64_type	},	\
66	{ "Dropped",		&ng_parse_uint64_type	},	\
67	{ NULL }					\
68}
69
70struct ng_checksum_config {
71	uint64_t	csum_flags;
72	uint64_t	csum_offload;
73};
74
75struct ng_checksum_stats {
76	uint64_t	received;
77	uint64_t	processed;
78	uint64_t	dropped;
79};
80
81struct ng_checksum_vlan_header {
82	u_int16_t tag;
83	u_int16_t etype;
84};
85
86#endif /* _NETGRAPH_NG_CHECKSUM_H_ */