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_ */