Root/
1 | /* Linux ISDN subsystem, sync PPP, interface to ipppd |
2 | * |
3 | * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de) |
4 | * Copyright 1995,96 Thinking Objects Software GmbH Wuerzburg |
5 | * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de) |
6 | * Copyright 2000-2002 by Kai Germaschewski (kai@germaschewski.name) |
7 | * |
8 | * This software may be used and distributed according to the terms |
9 | * of the GNU General Public License, incorporated herein by reference. |
10 | * |
11 | */ |
12 | |
13 | #ifndef _LINUX_ISDN_PPP_H |
14 | #define _LINUX_ISDN_PPP_H |
15 | |
16 | #define CALLTYPE_INCOMING 0x1 |
17 | #define CALLTYPE_OUTGOING 0x2 |
18 | #define CALLTYPE_CALLBACK 0x4 |
19 | |
20 | #define IPPP_VERSION "2.2.0" |
21 | |
22 | struct pppcallinfo |
23 | { |
24 | int calltype; |
25 | unsigned char local_num[64]; |
26 | unsigned char remote_num[64]; |
27 | int charge_units; |
28 | }; |
29 | |
30 | #define PPPIOCGCALLINFO _IOWR('t',128,struct pppcallinfo) |
31 | #define PPPIOCBUNDLE _IOW('t',129,int) |
32 | #define PPPIOCGMPFLAGS _IOR('t',130,int) |
33 | #define PPPIOCSMPFLAGS _IOW('t',131,int) |
34 | #define PPPIOCSMPMTU _IOW('t',132,int) |
35 | #define PPPIOCSMPMRU _IOW('t',133,int) |
36 | #define PPPIOCGCOMPRESSORS _IOR('t',134,unsigned long [8]) |
37 | #define PPPIOCSCOMPRESSOR _IOW('t',135,int) |
38 | #define PPPIOCGIFNAME _IOR('t',136, char [IFNAMSIZ] ) |
39 | |
40 | |
41 | #define SC_MP_PROT 0x00000200 |
42 | #define SC_REJ_MP_PROT 0x00000400 |
43 | #define SC_OUT_SHORT_SEQ 0x00000800 |
44 | #define SC_IN_SHORT_SEQ 0x00004000 |
45 | |
46 | #define SC_DECOMP_ON 0x01 |
47 | #define SC_COMP_ON 0x02 |
48 | #define SC_DECOMP_DISCARD 0x04 |
49 | #define SC_COMP_DISCARD 0x08 |
50 | #define SC_LINK_DECOMP_ON 0x10 |
51 | #define SC_LINK_COMP_ON 0x20 |
52 | #define SC_LINK_DECOMP_DISCARD 0x40 |
53 | #define SC_LINK_COMP_DISCARD 0x80 |
54 | |
55 | #define ISDN_PPP_COMP_MAX_OPTIONS 16 |
56 | |
57 | #define IPPP_COMP_FLAG_XMIT 0x1 |
58 | #define IPPP_COMP_FLAG_LINK 0x2 |
59 | |
60 | struct isdn_ppp_comp_data { |
61 | int num; |
62 | unsigned char options[ISDN_PPP_COMP_MAX_OPTIONS]; |
63 | int optlen; |
64 | int flags; |
65 | }; |
66 | |
67 | #ifdef __KERNEL__ |
68 | |
69 | |
70 | |
71 | #ifdef CONFIG_IPPP_FILTER |
72 | #include <linux/filter.h> |
73 | #endif |
74 | |
75 | #define DECOMP_ERR_NOMEM (-10) |
76 | |
77 | #define MP_END_FRAG 0x40 |
78 | #define MP_BEGIN_FRAG 0x80 |
79 | |
80 | #define MP_MAX_QUEUE_LEN 16 |
81 | |
82 | /* |
83 | * We need a way for the decompressor to influence the generation of CCP |
84 | * Reset-Requests in a variety of ways. The decompressor is already returning |
85 | * a lot of information (generated skb length, error conditions) so we use |
86 | * another parameter. This parameter is a pointer to a structure which is |
87 | * to be marked valid by the decompressor and only in this case is ever used. |
88 | * Furthermore, the only case where this data is used is when the decom- |
89 | * pressor returns DECOMP_ERROR. |
90 | * |
91 | * We use this same struct for the reset entry of the compressor to commu- |
92 | * nicate to its caller how to deal with sending of a Reset Ack. In this |
93 | * case, expra is not used, but other options still apply (suppressing |
94 | * sending with rsend, appending arbitrary data, etc). |
95 | */ |
96 | |
97 | #define IPPP_RESET_MAXDATABYTES 32 |
98 | |
99 | struct isdn_ppp_resetparams { |
100 | unsigned char valid:1; /* rw Is this structure filled at all ? */ |
101 | unsigned char rsend:1; /* rw Should we send one at all ? */ |
102 | unsigned char idval:1; /* rw Is the id field valid ? */ |
103 | unsigned char dtval:1; /* rw Is the data field valid ? */ |
104 | unsigned char expra:1; /* rw Is an Ack expected for this Req ? */ |
105 | unsigned char id; /* wo Send CCP ResetReq with this id */ |
106 | unsigned short maxdlen; /* ro Max bytes to be stored in data field */ |
107 | unsigned short dlen; /* rw Bytes stored in data field */ |
108 | unsigned char *data; /* wo Data for ResetReq info field */ |
109 | }; |
110 | |
111 | /* |
112 | * this is an 'old friend' from ppp-comp.h under a new name |
113 | * check the original include for more information |
114 | */ |
115 | struct isdn_ppp_compressor { |
116 | struct isdn_ppp_compressor *next, *prev; |
117 | struct module *owner; |
118 | int num; /* CCP compression protocol number */ |
119 | |
120 | void *(*alloc) (struct isdn_ppp_comp_data *); |
121 | void (*free) (void *state); |
122 | int (*init) (void *state, struct isdn_ppp_comp_data *, |
123 | int unit,int debug); |
124 | |
125 | /* The reset entry needs to get more exact information about the |
126 | ResetReq or ResetAck it was called with. The parameters are |
127 | obvious. If reset is called without a Req or Ack frame which |
128 | could be handed into it, code MUST be set to 0. Using rsparm, |
129 | the reset entry can control if and how a ResetAck is returned. */ |
130 | |
131 | void (*reset) (void *state, unsigned char code, unsigned char id, |
132 | unsigned char *data, unsigned len, |
133 | struct isdn_ppp_resetparams *rsparm); |
134 | |
135 | int (*compress) (void *state, struct sk_buff *in, |
136 | struct sk_buff *skb_out, int proto); |
137 | |
138 | int (*decompress) (void *state,struct sk_buff *in, |
139 | struct sk_buff *skb_out, |
140 | struct isdn_ppp_resetparams *rsparm); |
141 | |
142 | void (*incomp) (void *state, struct sk_buff *in,int proto); |
143 | void (*stat) (void *state, struct compstat *stats); |
144 | }; |
145 | |
146 | extern int isdn_ppp_register_compressor(struct isdn_ppp_compressor *); |
147 | extern int isdn_ppp_unregister_compressor(struct isdn_ppp_compressor *); |
148 | extern int isdn_ppp_dial_slave(char *); |
149 | extern int isdn_ppp_hangup_slave(char *); |
150 | |
151 | typedef struct { |
152 | unsigned long seqerrs; |
153 | unsigned long frame_drops; |
154 | unsigned long overflows; |
155 | unsigned long max_queue_len; |
156 | } isdn_mppp_stats; |
157 | |
158 | typedef struct { |
159 | int mp_mrru; /* unused */ |
160 | struct sk_buff * frags; /* fragments sl list -- use skb->next */ |
161 | long frames; /* number of frames in the frame list */ |
162 | unsigned int seq; /* last processed packet seq #: any packets |
163 | * with smaller seq # will be dropped |
164 | * unconditionally */ |
165 | spinlock_t lock; |
166 | int ref_ct; |
167 | /* statistics */ |
168 | isdn_mppp_stats stats; |
169 | } ippp_bundle; |
170 | |
171 | #define NUM_RCV_BUFFS 64 |
172 | |
173 | struct ippp_buf_queue { |
174 | struct ippp_buf_queue *next; |
175 | struct ippp_buf_queue *last; |
176 | char *buf; /* NULL here indicates end of queue */ |
177 | int len; |
178 | }; |
179 | |
180 | /* The data structure for one CCP reset transaction */ |
181 | enum ippp_ccp_reset_states { |
182 | CCPResetIdle, |
183 | CCPResetSentReq, |
184 | CCPResetRcvdReq, |
185 | CCPResetSentAck, |
186 | CCPResetRcvdAck |
187 | }; |
188 | |
189 | struct ippp_ccp_reset_state { |
190 | enum ippp_ccp_reset_states state; /* State of this transaction */ |
191 | struct ippp_struct *is; /* Backlink to device stuff */ |
192 | unsigned char id; /* Backlink id index */ |
193 | unsigned char ta:1; /* The timer is active (flag) */ |
194 | unsigned char expra:1; /* We expect a ResetAck at all */ |
195 | int dlen; /* Databytes stored in data */ |
196 | struct timer_list timer; /* For timeouts/retries */ |
197 | /* This is a hack but seems sufficient for the moment. We do not want |
198 | to have this be yet another allocation for some bytes, it is more |
199 | memory management overhead than the whole mess is worth. */ |
200 | unsigned char data[IPPP_RESET_MAXDATABYTES]; |
201 | }; |
202 | |
203 | /* The data structure keeping track of the currently outstanding CCP Reset |
204 | transactions. */ |
205 | struct ippp_ccp_reset { |
206 | struct ippp_ccp_reset_state *rs[256]; /* One per possible id */ |
207 | unsigned char lastid; /* Last id allocated by the engine */ |
208 | }; |
209 | |
210 | struct ippp_struct { |
211 | struct ippp_struct *next_link; |
212 | int state; |
213 | spinlock_t buflock; |
214 | struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */ |
215 | struct ippp_buf_queue *first; /* pointer to (current) first packet */ |
216 | struct ippp_buf_queue *last; /* pointer to (current) last used packet in queue */ |
217 | wait_queue_head_t wq; |
218 | struct task_struct *tk; |
219 | unsigned int mpppcfg; |
220 | unsigned int pppcfg; |
221 | unsigned int mru; |
222 | unsigned int mpmru; |
223 | unsigned int mpmtu; |
224 | unsigned int maxcid; |
225 | struct isdn_net_local_s *lp; |
226 | int unit; |
227 | int minor; |
228 | unsigned int last_link_seqno; |
229 | long mp_seqno; |
230 | #ifdef CONFIG_ISDN_PPP_VJ |
231 | unsigned char *cbuf; |
232 | struct slcompress *slcomp; |
233 | #endif |
234 | #ifdef CONFIG_IPPP_FILTER |
235 | struct sock_filter *pass_filter; /* filter for packets to pass */ |
236 | struct sock_filter *active_filter; /* filter for pkts to reset idle */ |
237 | unsigned pass_len, active_len; |
238 | #endif |
239 | unsigned long debug; |
240 | struct isdn_ppp_compressor *compressor,*decompressor; |
241 | struct isdn_ppp_compressor *link_compressor,*link_decompressor; |
242 | void *decomp_stat,*comp_stat,*link_decomp_stat,*link_comp_stat; |
243 | struct ippp_ccp_reset *reset; /* Allocated on demand, may never be needed */ |
244 | unsigned long compflags; |
245 | }; |
246 | |
247 | #endif /* __KERNEL__ */ |
248 | #endif /* _LINUX_ISDN_PPP_H */ |
249 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9