Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/netgraph/ng_etf.h
34372 views
1
/*-

2
 * ng_etf.h

3
 */

4


5
/*-

6
 * SPDX-License-Identifier: BSD-2-Clause

7
 *

8
 * Copyright (c) 2001, FreeBSD Incorporated 

9
 * All rights reserved.

10
 *

11
 * Redistribution and use in source and binary forms, with or without

12
 * modification, are permitted provided that the following conditions

13
 * are met:

14
 * 1. Redistributions of source code must retain the above copyright

15
 *    notice unmodified, this list of conditions, and the following

16
 *    disclaimer.

17
 * 2. Redistributions in binary form must reproduce the above copyright

18
 *    notice, this list of conditions and the following disclaimer in the

19
 *    documentation and/or other materials provided with the distribution.

20
 *

21
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

22
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

23
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

24
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

25
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

26
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

27
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

28
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

29
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

30
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

31
 * SUCH DAMAGE.

32
 *

33
 * Author: Julian Elischer <[email protected]>

34
 */

35


36
#ifndef _NETGRAPH_NG_ETF_H_

37
#define _NETGRAPH_NG_ETF_H_

38


39
/* Node type name. This should be unique among all netgraph node types */

40
#define NG_ETF_NODE_TYPE	"etf"

41


42
/* Node type cookie. Should also be unique. This value MUST change whenever

43
   an incompatible change is made to this header file, to insure consistency.

44
   The de facto method for generating cookies is to take the output of the

45
   date command: date -u +'%s' */

46
#define NGM_ETF_COOKIE		983084516

47


48
/* Hook names */

49
#define NG_ETF_HOOK_DOWNSTREAM	"downstream"

50
#define NG_ETF_HOOK_NOMATCH	"nomatch"

51


52
/* Netgraph commands understood by this node type */

53
enum {

54
	NGM_ETF_SET_FLAG = 1,

55
	NGM_ETF_GET_STATUS,

56
	NGM_ETF_SET_FILTER,

57


58
};

59


60
/* This structure is returned by the NGM_ETF_GET_STATUS command */

61
struct ng_etfstat {

62
	u_int32_t   packets_in;		/* packets in from downstream */

63
	u_int32_t   packets_out;	/* packets out towards downstream */

64
};

65


66
/*

67
 * This needs to be kept in sync with the above structure definition

68
 */

69
#define NG_ETF_STATS_TYPE_INFO	{				\

70
	  { "packets_in",	&ng_parse_uint32_type	},	\

71
	  { "packets_out",	&ng_parse_uint32_type	},	\

72
	  { NULL }						\

73
}

74


75
/* This structure is returned by the NGM_ETF_GET_STATUS command */

76
struct ng_etffilter {

77
	char		matchhook[NG_HOOKSIZ]; /* hook name */

78
	u_int16_t	ethertype;	/* this ethertype to this hook */

79
};	

80


81
/*

82
 * This needs to be kept in sync with the above structure definition

83
 */

84
#define NG_ETF_FILTER_TYPE_INFO	{				\

85
          { "matchhook",	&ng_parse_hookbuf_type  },	\

86
	  { "ethertype",	&ng_parse_uint16_type   },	\

87
	  { NULL }						\

88
}

89


90
#endif /* _NETGRAPH_NG_ETF_H_ */

91


92