1 /* 2 * Written by Eivind Eklund <eivind@yes.no> 3 * for Yes Interactive 4 * 5 * Copyright (C) 1998, Yes Interactive. All rights reserved. 6 * 7 * Redistribution and use in any form is permitted. Redistribution in 8 * source form should include the above copyright and this set of 9 * conditions, because large sections american law seems to have been 10 * created by a bunch of jerks on drugs that are now illegal, forcing 11 * me to include this copyright-stuff instead of placing this in the 12 * public domain. The name of of 'Yes Interactive' or 'Eivind Eklund' 13 * may not be used to endorse or promote products derived from this 14 * software without specific prior written permission. 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 18 * 19 */ 20 21 struct datalink; 22 struct bundle; 23 struct iovec; 24 struct physical; 25 struct bundle; 26 struct ccp; 27 struct cmdargs; 28 29 /* Device types (don't use zero, it'll be confused with NULL in physical2iov */ 30 #define I4B_DEVICE 1 31 #define TTY_DEVICE 2 32 #define TCP_DEVICE 3 33 #define UDP_DEVICE 4 34 #define ETHER_DEVICE 5 35 #define EXEC_DEVICE 6 36 #define ATM_DEVICE 7 37 #define NG_DEVICE 8 38 39 /* Returns from awaitcarrier() */ 40 #define CARRIER_PENDING 1 41 #define CARRIER_OK 2 42 #define CARRIER_LOST 3 43 44 /* A cd ``necessity'' value */ 45 #define CD_VARIABLE 0 46 #define CD_REQUIRED 1 47 #define CD_NOTREQUIRED 2 48 #define CD_DEFAULT 3 49 50 struct cd { 51 unsigned necessity : 2; /* A CD_ value */ 52 int delay; /* Wait this many seconds after login script */ 53 }; 54 55 struct device { 56 int type; 57 const char *name; 58 u_short mtu; 59 struct cd cd; 60 61 int (*awaitcarrier)(struct physical *); 62 int (*removefromset)(struct physical *, fd_set *, fd_set *, fd_set *); 63 int (*raw)(struct physical *); 64 void (*offline)(struct physical *); 65 void (*cooked)(struct physical *); 66 void (*setasyncparams)(struct physical *, u_int32_t, u_int32_t); 67 void (*stoptimer)(struct physical *); 68 void (*destroy)(struct physical *); 69 ssize_t (*read)(struct physical *, void *, size_t); 70 ssize_t (*write)(struct physical *, const void *, size_t); 71 void (*device2iov)(struct device *, struct iovec *, int *, int, int *, int *); 72 unsigned (*speed)(struct physical *); 73 const char *(*openinfo)(struct physical *); 74 int (*slot)(struct physical *); 75 }; 76 77 struct physical { 78 struct link link; 79 struct fdescriptor desc; 80 int type; /* What sort of PHYS_* link are we ? */ 81 struct async async; /* Our async state */ 82 struct hdlc hdlc; /* Our hdlc state */ 83 int fd; /* File descriptor for this device */ 84 struct mbuf *out; /* mbuf that suffered a short write */ 85 int connect_count; 86 struct datalink *dl; /* my owner */ 87 88 struct { 89 u_char buf[MAX_MRU]; /* Our input data buffer */ 90 size_t sz; 91 } input; 92 93 struct { 94 char full[DEVICE_LEN]; /* Our current device name */ 95 char *base; 96 } name; 97 98 int Utmp; /* Are we in utmp ? */ 99 pid_t session_owner; /* HUP this when closing the link */ 100 101 struct device *handler; /* device specific handler */ 102 103 struct { 104 unsigned rts_cts : 1; /* Is rts/cts enabled ? */ 105 unsigned nonstandard_pppoe : 1; /* Is PPPoE mode nonstandard */ 106 unsigned pppoe_configured : 1; /* temporary hack */ 107 unsigned parity; /* What parity is enabled? (tty flags) */ 108 unsigned speed; /* tty speed */ 109 110 char devlist[LINE_LEN]; /* NUL separated list of devices */ 111 int ndev; /* number of devices in list */ 112 struct cd cd; 113 } cfg; 114 }; 115 116 #define field2phys(fp, name) \ 117 ((struct physical *)((char *)fp - (uintptr_t)(&((struct physical *)0)->name))) 118 119 #define link2physical(l) \ 120 ((l)->type == PHYSICAL_LINK ? field2phys(l, link) : NULL) 121 122 #define descriptor2physical(d) \ 123 ((d)->type == PHYSICAL_DESCRIPTOR ? field2phys(d, desc) : NULL) 124 125 #define PHYSICAL_NOFORCE 1 126 #define PHYSICAL_FORCE_ASYNC 2 127 #define PHYSICAL_FORCE_SYNC 3 128 #define PHYSICAL_FORCE_SYNCNOACF 4 129 130 extern struct physical *physical_Create(struct datalink *, int); 131 extern int physical_Open(struct physical *); 132 extern int physical_Raw(struct physical *); 133 extern unsigned physical_GetSpeed(struct physical *); 134 extern int physical_SetSpeed(struct physical *, unsigned); 135 extern int physical_SetParity(struct physical *, const char *); 136 extern int physical_SetRtsCts(struct physical *, int); 137 extern void physical_SetSync(struct physical *); 138 extern int physical_ShowStatus(struct cmdargs const *); 139 extern void physical_Offline(struct physical *); 140 extern void physical_Close(struct physical *); 141 extern void physical_Destroy(struct physical *); 142 extern struct physical *iov2physical(struct datalink *, struct iovec *, int *, 143 int, int, int *, int *); 144 extern int physical2iov(struct physical *, struct iovec *, int *, int, int *, 145 int *); 146 extern const char *physical_LockedDevice(struct physical *); 147 extern void physical_ChangedPid(struct physical *, pid_t); 148 149 extern int physical_IsSync(struct physical *); 150 extern u_short physical_DeviceMTU(struct physical *); 151 extern const char *physical_GetDevice(struct physical *); 152 extern void physical_SetDeviceList(struct physical *, int, const char *const *); 153 extern void physical_SetDevice(struct physical *, const char *); 154 155 extern ssize_t physical_Read(struct physical *, void *, size_t); 156 extern ssize_t physical_Write(struct physical *, const void *, size_t); 157 extern int physical_doUpdateSet(struct fdescriptor *, fd_set *, fd_set *, 158 fd_set *, int *, int); 159 extern int physical_IsSet(struct fdescriptor *, const fd_set *); 160 extern void physical_DescriptorRead(struct fdescriptor *, struct bundle *, 161 const fd_set *); 162 extern void physical_Login(struct physical *, const char *); 163 extern int physical_RemoveFromSet(struct physical *, fd_set *, fd_set *, 164 fd_set *); 165 extern int physical_SetMode(struct physical *, int); 166 extern void physical_DeleteQueue(struct physical *); 167 extern void physical_SetupStack(struct physical *, const char *, int); 168 extern void physical_StopDeviceTimer(struct physical *); 169 extern unsigned physical_MaxDeviceSize(void); 170 extern int physical_AwaitCarrier(struct physical *); 171 extern void physical_SetDescriptor(struct physical *); 172 extern void physical_SetAsyncParams(struct physical *, u_int32_t, u_int32_t); 173 extern int physical_Slot(struct physical *); 174 extern int physical_SetPPPoEnonstandard(struct physical *, int); 175