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37 * Author: Archie Cobbs <archie@freebsd.org>
39 * $Whistle: ng_mppc.h,v 1.3 2000/02/12 01:17:22 archie Exp $
43 #ifndef _NETGRAPH_MPPC_H_
44 #define _NETGRAPH_MPPC_H_
46 /* Node type name and magic cookie */
47 #define NG_MPPC_NODE_TYPE "mppc"
48 #define NGM_MPPC_COOKIE 942886745
51 #define NG_MPPC_HOOK_COMP "comp" /* compression hook */
52 #define NG_MPPC_HOOK_DECOMP "decomp" /* decompression hook */
54 /* Length of MPPE key */
55 #define MPPE_KEY_LEN 16
57 /* Max expansion due to MPPC header and compression algorithm */
58 #define MPPC_MAX_BLOWUP(n) ((n) * 9 / 8 + 26)
60 /* MPPC/MPPE PPP negotiation bits */
61 #define MPPC_BIT 0x00000001 /* mppc compression bits */
62 #define MPPE_40 0x00000020 /* use 40 bit key */
63 #define MPPE_56 0x00000080 /* use 56 bit key */
64 #define MPPE_128 0x00000040 /* use 128 bit key */
65 #define MPPE_BITS 0x000000e0 /* mppe encryption bits */
66 #define MPPE_STATELESS 0x01000000 /* use stateless mode */
67 #define MPPC_VALID_BITS 0x010000e1 /* possibly valid bits */
69 /* Config struct (per-direction) */
70 struct ng_mppc_config {
71 u_char enable; /* enable */
72 u_int32_t bits; /* config bits */
73 u_char startkey[MPPE_KEY_LEN]; /* start key */
76 /* Netgraph commands */
78 NGM_MPPC_CONFIG_COMP = 1,
79 NGM_MPPC_CONFIG_DECOMP,
80 NGM_MPPC_RESETREQ, /* sent either way! */
83 #endif /* _NETGRAPH_MPPC_H_ */