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37 * Author: Archie Cobbs <archie@freebsd.org>
40 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
43 #ifndef _NETGRAPH_BPF_H_
44 #define _NETGRAPH_BPF_H_
46 /* Node type name and magic cookie */
47 #define NG_BPF_NODE_TYPE "bpf"
48 #define NGM_BPF_COOKIE 944100792
50 /* Program structure for one hook */
51 struct ng_bpf_hookprog {
52 char thisHook[NG_HOOKLEN+1]; /* name of hook */
53 char ifMatch[NG_HOOKLEN+1]; /* match dest hook */
54 char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */
55 int32_t bpf_prog_len; /* #isns in program */
56 struct bpf_insn bpf_prog[]; /* bpf program */
59 #define NG_BPF_HOOKPROG_SIZE(numInsn) \
60 (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
62 /* Keep this in sync with the above structure definition */
63 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \
64 { "thisHook", &ng_parse_hookbuf_type }, \
65 { "ifMatch", &ng_parse_hookbuf_type }, \
66 { "ifNotMatch", &ng_parse_hookbuf_type }, \
67 { "bpf_prog_len", &ng_parse_int32_type }, \
68 { "bpf_prog", (bptype) }, \
72 /* Statistics structure for one hook */
73 struct ng_bpf_hookstat {
76 u_int64_t recvMatchFrames;
77 u_int64_t recvMatchOctets;
82 /* Keep this in sync with the above structure definition */
83 #define NG_BPF_HOOKSTAT_TYPE_INFO { \
84 { "recvFrames", &ng_parse_uint64_type }, \
85 { "recvOctets", &ng_parse_uint64_type }, \
86 { "recvMatchFrames", &ng_parse_uint64_type }, \
87 { "recvMatchOctets", &ng_parse_uint64_type }, \
88 { "xmitFrames", &ng_parse_uint64_type }, \
89 { "xmitOctets", &ng_parse_uint64_type }, \
93 /* Netgraph commands */
95 NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */
96 NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */
97 NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */
98 NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
99 NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
102 #endif /* _NETGRAPH_BPF_H_ */