2 * This software may be used and distributed according to the terms
3 * of the GNU General Public License, incorporated herein by reference.
8 #ifndef _LINUX_ISDN_PPP_H
9 #define _LINUX_ISDN_PPP_H
12 #define CALLTYPE_INCOMING 0x1
13 #define CALLTYPE_OUTGOING 0x2
14 #define CALLTYPE_CALLBACK 0x4
16 #define IPPP_VERSION "2.2.0"
21 unsigned char local_num[64];
22 unsigned char remote_num[64];
26 #define PPPIOCGCALLINFO _IOWR('t',128,struct pppcallinfo)
27 #define PPPIOCBUNDLE _IOW('t',129,int)
28 #define PPPIOCGMPFLAGS _IOR('t',130,int)
29 #define PPPIOCSMPFLAGS _IOW('t',131,int)
30 #define PPPIOCSMPMTU _IOW('t',132,int)
31 #define PPPIOCSMPMRU _IOW('t',133,int)
32 #define PPPIOCGCOMPRESSORS _IOR('t',134,unsigned long [8])
33 #define PPPIOCSCOMPRESSOR _IOW('t',135,int)
34 #define PPPIOCGIFNAME _IOR('t',136, char [IFNAMSIZ] )
37 #define SC_MP_PROT 0x00000200
38 #define SC_REJ_MP_PROT 0x00000400
39 #define SC_OUT_SHORT_SEQ 0x00000800
40 #define SC_IN_SHORT_SEQ 0x00004000
42 #define SC_DECOMP_ON 0x01
43 #define SC_COMP_ON 0x02
44 #define SC_DECOMP_DISCARD 0x04
45 #define SC_COMP_DISCARD 0x08
46 #define SC_LINK_DECOMP_ON 0x10
47 #define SC_LINK_COMP_ON 0x20
48 #define SC_LINK_DECOMP_DISCARD 0x40
49 #define SC_LINK_COMP_DISCARD 0x80
51 #define ISDN_PPP_COMP_MAX_OPTIONS 16
53 #define IPPP_COMP_FLAG_XMIT 0x1
54 #define IPPP_COMP_FLAG_LINK 0x2
56 struct isdn_ppp_comp_data {
58 unsigned char options[ISDN_PPP_COMP_MAX_OPTIONS];
66 #include <linux/config.h>
69 #define DECOMP_ERR_NOMEM (-10)
71 #define MP_END_FRAG 0x40
72 #define MP_BEGIN_FRAG 0x80
74 #define MP_MAX_QUEUE_LEN 16
77 * We need a way for the decompressor to influence the generation of CCP
78 * Reset-Requests in a variety of ways. The decompressor is already returning
79 * a lot of information (generated skb length, error conditions) so we use
80 * another parameter. This parameter is a pointer to a structure which is
81 * to be marked valid by the decompressor and only in this case is ever used.
82 * Furthermore, the only case where this data is used is when the decom-
83 * pressor returns DECOMP_ERROR.
85 * We use this same struct for the reset entry of the compressor to commu-
86 * nicate to its caller how to deal with sending of a Reset Ack. In this
87 * case, expra is not used, but other options still apply (suppressing
88 * sending with rsend, appending arbitrary data, etc).
91 #define IPPP_RESET_MAXDATABYTES 32
93 struct isdn_ppp_resetparams {
94 unsigned char valid:1; /* rw Is this structure filled at all ? */
95 unsigned char rsend:1; /* rw Should we send one at all ? */
96 unsigned char idval:1; /* rw Is the id field valid ? */
97 unsigned char dtval:1; /* rw Is the data field valid ? */
98 unsigned char expra:1; /* rw Is an Ack expected for this Req ? */
99 unsigned char id; /* wo Send CCP ResetReq with this id */
100 unsigned short maxdlen; /* ro Max bytes to be stored in data field */
101 unsigned short dlen; /* rw Bytes stored in data field */
102 unsigned char *data; /* wo Data for ResetReq info field */
106 * this is an 'old friend' from ppp-comp.h under a new name
107 * check the original include for more information
109 struct isdn_ppp_compressor {
110 struct isdn_ppp_compressor *next, *prev;
111 int num; /* CCP compression protocol number */
113 void *(*alloc) (struct isdn_ppp_comp_data *);
114 void (*free) (void *state);
115 int (*init) (void *state, struct isdn_ppp_comp_data *,
118 /* The reset entry needs to get more exact information about the
119 ResetReq or ResetAck it was called with. The parameters are
120 obvious. If reset is called without a Req or Ack frame which
121 could be handed into it, code MUST be set to 0. Using rsparm,
122 the reset entry can control if and how a ResetAck is returned. */
124 void (*reset) (void *state, unsigned char code, unsigned char id,
125 unsigned char *data, unsigned len,
126 struct isdn_ppp_resetparams *rsparm);
128 int (*compress) (void *state, struct sk_buff *in,
129 struct sk_buff *skb_out, int proto);
131 int (*decompress) (void *state,struct sk_buff *in,
132 struct sk_buff *skb_out,
133 struct isdn_ppp_resetparams *rsparm);
135 void (*incomp) (void *state, struct sk_buff *in,int proto);
136 void (*stat) (void *state, struct compstat *stats);
139 extern int isdn_ppp_register_compressor(struct isdn_ppp_compressor *);
140 extern int isdn_ppp_unregister_compressor(struct isdn_ppp_compressor *);
141 extern int isdn_ppp_dial_slave(char *);
142 extern int isdn_ppp_hangup_slave(char *);
145 unsigned long seqerrs;
146 unsigned long frame_drops;
147 unsigned long overflows;
148 unsigned long max_queue_len;
152 int mp_mrru; /* unused */
153 struct sk_buff * frags; /* fragments sl list -- use skb->next */
154 long frames; /* number of frames in the frame list */
155 unsigned int seq; /* last processed packet seq #: any packets
156 * with smaller seq # will be dropped
161 isdn_mppp_stats stats;
164 #define NUM_RCV_BUFFS 64
166 struct ippp_buf_queue {
167 struct ippp_buf_queue *next;
168 struct ippp_buf_queue *last;
169 char *buf; /* NULL here indicates end of queue */
173 /* The data structure for one CCP reset transaction */
174 enum ippp_ccp_reset_states {
182 struct ippp_ccp_reset_state {
183 enum ippp_ccp_reset_states state; /* State of this transaction */
184 struct ippp_struct *is; /* Backlink to device stuff */
185 unsigned char id; /* Backlink id index */
186 unsigned char ta:1; /* The timer is active (flag) */
187 unsigned char expra:1; /* We expect a ResetAck at all */
188 int dlen; /* Databytes stored in data */
189 struct timer_list timer; /* For timeouts/retries */
190 /* This is a hack but seems sufficient for the moment. We do not want
191 to have this be yet another allocation for some bytes, it is more
192 memory management overhead than the whole mess is worth. */
193 unsigned char data[IPPP_RESET_MAXDATABYTES];
196 /* The data structure keeping track of the currently outstanding CCP Reset
198 struct ippp_ccp_reset {
199 struct ippp_ccp_reset_state *rs[256]; /* One per possible id */
200 unsigned char lastid; /* Last id allocated by the engine */
204 struct ippp_struct *next_link;
206 struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */
207 struct ippp_buf_queue *first; /* pointer to (current) first packet */
208 struct ippp_buf_queue *last; /* pointer to (current) last used packet in queue */
209 wait_queue_head_t wq;
210 struct task_struct *tk;
211 unsigned int mpppcfg;
217 struct isdn_net_local_s *lp;
220 unsigned int last_link_seqno;
222 #ifdef CONFIG_ISDN_PPP_VJ
224 struct slcompress *slcomp;
227 struct isdn_ppp_compressor *compressor,*decompressor;
228 struct isdn_ppp_compressor *link_compressor,*link_decompressor;
229 void *decomp_stat,*comp_stat,*link_decomp_stat,*link_comp_stat;
230 struct ippp_ccp_reset *reset; /* Allocated on demand, may never be needed */
231 unsigned long compflags;
234 #endif /* __KERNEL__ */
235 #endif /* _LINUX_ISDN_PPP_H */