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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* Linux ISDN subsystem, sync PPP, interface to ipppd |
| 2 | * |
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| 3 | * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de) |
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| 4 | * Copyright 1995,96 Thinking Objects Software GmbH Wuerzburg |
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| 5 | * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de) |
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| 6 | * Copyright 2000-2002 by Kai Germaschewski (kai@germaschewski.name) |
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| 7 | * |
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| 8 | * This software may be used and distributed according to the terms |
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| 9 | * of the GNU General Public License, incorporated herein by reference. |
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| 10 | * |
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| 11 | */ |
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| 12 | |||
| 13 | #ifndef _LINUX_ISDN_PPP_H |
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| 14 | #define _LINUX_ISDN_PPP_H |
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| 15 | |||
| 16 | #define CALLTYPE_INCOMING 0x1 |
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| 17 | #define CALLTYPE_OUTGOING 0x2 |
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| 18 | #define CALLTYPE_CALLBACK 0x4 |
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| 19 | |||
| 20 | #define IPPP_VERSION "2.2.0" |
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| 21 | |||
| 22 | struct pppcallinfo |
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| 23 | { |
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| 24 | int calltype; |
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| 25 | unsigned char local_num[64]; |
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| 26 | unsigned char remote_num[64]; |
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| 27 | int charge_units; |
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| 28 | }; |
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| 29 | |||
| 30 | #define PPPIOCGCALLINFO _IOWR('t',128,struct pppcallinfo) |
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| 31 | #define PPPIOCBUNDLE _IOW('t',129,int) |
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| 32 | #define PPPIOCGMPFLAGS _IOR('t',130,int) |
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| 33 | #define PPPIOCSMPFLAGS _IOW('t',131,int) |
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| 34 | #define PPPIOCSMPMTU _IOW('t',132,int) |
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| 35 | #define PPPIOCSMPMRU _IOW('t',133,int) |
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| 36 | #define PPPIOCGCOMPRESSORS _IOR('t',134,unsigned long[8]) |
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| 37 | #define PPPIOCSCOMPRESSOR _IOW('t',135,int) |
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| 38 | #define PPPIOCGIFNAME _IOR('t',136,char[IFNAMSIZ]) |
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| 39 | |||
| 40 | #define SC_MP_PROT 0x00000200 |
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| 41 | #define SC_REJ_MP_PROT 0x00000400 |
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| 42 | #define SC_OUT_SHORT_SEQ 0x00000800 |
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| 43 | #define SC_IN_SHORT_SEQ 0x00004000 |
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| 44 | |||
| 45 | #define ISDN_PPP_COMP_MAX_OPTIONS 16 |
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| 46 | |||
| 47 | #define IPPP_COMP_FLAG_XMIT 0x1 |
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| 48 | #define IPPP_COMP_FLAG_LINK 0x2 |
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| 49 | |||
| 50 | struct isdn_ppp_comp_data { |
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| 51 | int num; |
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| 52 | unsigned char options[ISDN_PPP_COMP_MAX_OPTIONS]; |
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| 53 | int optlen; |
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| 54 | int flags; |
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| 55 | }; |
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| 56 | |||
| 57 | #ifdef __KERNEL__ |
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| 58 | |||
| 59 | #include <linux/skbuff.h> |
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| 60 | #include <linux/ppp_defs.h> |
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| 61 | |||
| 62 | #define DECOMP_ERR_NOMEM (-10) |
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| 63 | |||
| 64 | /* |
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| 65 | * We need a way for the decompressor to influence the generation of CCP |
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| 66 | * Reset-Requests in a variety of ways. The decompressor is already returning |
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| 67 | * a lot of information (generated skb length, error conditions) so we use |
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| 68 | * another parameter. This parameter is a pointer to a structure which is |
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| 69 | * to be marked valid by the decompressor and only in this case is ever used. |
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| 70 | * Furthermore, the only case where this data is used is when the decom- |
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| 71 | * pressor returns DECOMP_ERROR. |
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| 72 | * |
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| 73 | * We use this same struct for the reset entry of the compressor to commu- |
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| 74 | * nicate to its caller how to deal with sending of a Reset Ack. In this |
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| 75 | * case, expra is not used, but other options still apply (suppressing |
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| 76 | * sending with rsend, appending arbitrary data, etc). |
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| 77 | */ |
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| 78 | |||
| 79 | #define IPPP_RESET_MAXDATABYTES 32 |
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| 80 | |||
| 81 | struct isdn_ppp_resetparams { |
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| 82 | unsigned char valid:1; /* rw Is this structure filled at all ? */ |
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| 83 | unsigned char rsend:1; /* rw Should we send one at all ? */ |
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| 84 | unsigned char idval:1; /* rw Is the id field valid ? */ |
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| 85 | unsigned char dtval:1; /* rw Is the data field valid ? */ |
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| 86 | unsigned char expra:1; /* rw Is an Ack expected for this Req ? */ |
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| 87 | unsigned char id; /* wo Send CCP ResetReq with this id */ |
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| 88 | unsigned short maxdlen; /* ro Max bytes to be stored in data field */ |
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| 89 | unsigned short dlen; /* rw Bytes stored in data field */ |
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| 90 | unsigned char *data; /* wo Data for ResetReq info field */ |
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| 91 | }; |
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| 92 | |||
| 93 | /* |
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| 94 | * this is an 'old friend' from ppp-comp.h under a new name |
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| 95 | * check the original include for more information |
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| 96 | */ |
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| 97 | struct isdn_ppp_compressor { |
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| 98 | struct module *owner; |
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| 99 | struct list_head list; |
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| 100 | int num; /* CCP compression protocol number */ |
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| 101 | |||
| 102 | void *(*alloc) (struct isdn_ppp_comp_data *); |
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| 103 | void (*free) (void *state); |
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| 104 | int (*init) (void *state, struct isdn_ppp_comp_data *, |
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| 105 | int unit,int debug); |
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| 106 | |||
| 107 | /* The reset entry needs to get more exact information about the |
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| 108 | ResetReq or ResetAck it was called with. The parameters are |
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| 109 | obvious. If reset is called without a Req or Ack frame which |
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| 110 | could be handed into it, code MUST be set to 0. Using rsparm, |
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| 111 | the reset entry can control if and how a ResetAck is returned. */ |
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| 112 | |||
| 113 | void (*reset) (void *state, unsigned char code, unsigned char id, |
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| 114 | unsigned char *data, unsigned len, |
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| 115 | struct isdn_ppp_resetparams *rsparm); |
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| 116 | |||
| 117 | int (*compress) (void *state, struct sk_buff *in, |
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| 118 | struct sk_buff *skb_out, int proto); |
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| 119 | |||
| 120 | int (*decompress) (void *state,struct sk_buff *in, |
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| 121 | struct sk_buff *skb_out, |
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| 122 | struct isdn_ppp_resetparams *rsparm); |
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| 123 | |||
| 124 | void (*incomp) (void *state, struct sk_buff *in,int proto); |
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| 125 | void (*stat) (void *state, struct compstat *stats); |
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| 126 | }; |
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| 127 | |||
| 128 | extern int isdn_ppp_register_compressor(struct isdn_ppp_compressor *); |
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| 129 | extern int isdn_ppp_unregister_compressor(struct isdn_ppp_compressor *); |
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| 130 | |||
| 131 | #endif /* __KERNEL__ */ |
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| 132 | #endif /* _LINUX_ISDN_PPP_H */ |