1 /* 2 * DLCI/FRAD Definitions for Frame Relay Access Devices. DLCI devices are 3 * created for each DLCI associated with a FRAD. The FRAD driver 4 * is not truly a network device, but the lower level device 5 * handler. This allows other FRAD manufacturers to use the DLCI 6 * code, including its RFC1490 encapsulation alongside the current 7 * implementation for the Sangoma cards. 8 * 9 * Version: @(#)if_ifrad.h 0.15 31 Mar 96 10 * 11 * Author: Mike McLagan <mike.mclagan@linux.org> 12 * 13 * Changes: 14 * 0.15 Mike McLagan changed structure defs (packed) 15 * re-arranged flags 16 * added DLCI_RET vars 17 * 18 * This program is free software; you can redistribute it and/or 19 * modify it under the terms of the GNU General Public License 20 * as published by the Free Software Foundation; either version 21 * 2 of the License, or (at your option) any later version. 22 */ 23 24 #ifndef _FRAD_H_ 25 #define _FRAD_H_ 26 27 #include <linux/config.h> 28 #include <linux/if.h> 29 30 #if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE) 31 32 /* Structures and constants associated with the DLCI device driver */ 33 34 struct dlci_add 35 { 36 char devname[IFNAMSIZ]; 37 short dlci; 38 }; 39 40 #define DLCI_GET_CONF (SIOCDEVPRIVATE + 2) 41 #define DLCI_SET_CONF (SIOCDEVPRIVATE + 3) 42 43 /* 44 * These are related to the Sangoma SDLA and should remain in order. 45 * Code within the SDLA module is based on the specifics of this 46 * structure. Change at your own peril. 47 */ 48 struct dlci_conf { 49 short flags; 50 short CIR_fwd; 51 short Bc_fwd; 52 short Be_fwd; 53 short CIR_bwd; 54 short Bc_bwd; 55 short Be_bwd; 56 57 /* these are part of the status read */ 58 short Tc_fwd; 59 short Tc_bwd; 60 short Tf_max; 61 short Tb_max; 62 63 /* add any new fields here above is a mirror of sdla_dlci_conf */ 64 }; 65 66 #define DLCI_GET_SLAVE (SIOCDEVPRIVATE + 4) 67 68 /* configuration flags for DLCI */ 69 #define DLCI_IGNORE_CIR_OUT 0x0001 70 #define DLCI_ACCOUNT_CIR_IN 0x0002 71 #define DLCI_BUFFER_IF 0x0008 72 73 #define DLCI_VALID_FLAGS 0x000B 74 75 /* FRAD driver uses these to indicate what it did with packet */ 76 #define DLCI_RET_OK 0x00 77 #define DLCI_RET_ERR 0x01 78 #define DLCI_RET_DROP 0x02 79 80 /* defines for the actual Frame Relay hardware */ 81 #define FRAD_GET_CONF (SIOCDEVPRIVATE) 82 #define FRAD_SET_CONF (SIOCDEVPRIVATE + 1) 83 84 #define FRAD_LAST_IOCTL FRAD_SET_CONF 85 86 /* 87 * Based on the setup for the Sangoma SDLA. If changes are 88 * necessary to this structure, a routine will need to be 89 * added to that module to copy fields. 90 */ 91 struct frad_conf 92 { 93 short station; 94 short flags; 95 short kbaud; 96 short clocking; 97 short mtu; 98 short T391; 99 short T392; 100 short N391; 101 short N392; 102 short N393; 103 short CIR_fwd; 104 short Bc_fwd; 105 short Be_fwd; 106 short CIR_bwd; 107 short Bc_bwd; 108 short Be_bwd; 109 110 /* Add new fields here, above is a mirror of the sdla_conf */ 111 112 }; 113 114 #define FRAD_STATION_CPE 0x0000 115 #define FRAD_STATION_NODE 0x0001 116 117 #define FRAD_TX_IGNORE_CIR 0x0001 118 #define FRAD_RX_ACCOUNT_CIR 0x0002 119 #define FRAD_DROP_ABORTED 0x0004 120 #define FRAD_BUFFERIF 0x0008 121 #define FRAD_STATS 0x0010 122 #define FRAD_MCI 0x0100 123 #define FRAD_AUTODLCI 0x8000 124 #define FRAD_VALID_FLAGS 0x811F 125 126 #define FRAD_CLOCK_INT 0x0001 127 #define FRAD_CLOCK_EXT 0x0000 128 129 #ifdef __KERNEL__ 130 131 /* these are the fields of an RFC 1490 header */ 132 struct frhdr 133 { 134 unsigned char control; 135 136 /* for IP packets, this can be the NLPID */ 137 unsigned char pad ; 138 139 unsigned char NLPID ; 140 unsigned char OUI[3]; 141 unsigned short PID __attribute__((packed)); 142 143 #define IP_NLPID pad 144 }; 145 146 /* see RFC 1490 for the definition of the following */ 147 #define FRAD_I_UI 0x03 148 149 #define FRAD_P_PADDING 0x00 150 #define FRAD_P_Q933 0x08 151 #define FRAD_P_SNAP 0x80 152 #define FRAD_P_CLNP 0x81 153 #define FRAD_P_IP 0xCC 154 155 struct dlci_local 156 { 157 struct net_device_stats stats; 158 struct net_device *slave; 159 struct dlci_conf config; 160 int configured; 161 162 /* callback function */ 163 void (*receive)(struct sk_buff *skb, struct net_device *); 164 }; 165 166 struct frad_local 167 { 168 struct net_device_stats stats; 169 170 /* devices which this FRAD is slaved to */ 171 struct net_device *master[CONFIG_DLCI_MAX]; 172 short dlci[CONFIG_DLCI_MAX]; 173 174 struct frad_conf config; 175 int configured; /* has this device been configured */ 176 int initialized; /* mem_start, port, irq set ? */ 177 178 /* callback functions */ 179 int (*activate)(struct net_device *, struct net_device *); 180 int (*deactivate)(struct net_device *, struct net_device *); 181 int (*assoc)(struct net_device *, struct net_device *); 182 int (*deassoc)(struct net_device *, struct net_device *); 183 int (*dlci_conf)(struct net_device *, struct net_device *, int get); 184 185 /* fields that are used by the Sangoma SDLA cards */ 186 struct timer_list timer; 187 int type; /* adapter type */ 188 int state; /* state of the S502/8 control latch */ 189 int buffer; /* current buffer for S508 firmware */ 190 }; 191 192 int register_frad(const char *name); 193 int unregister_frad(const char *name); 194 195 extern int (*dlci_ioctl_hook)(unsigned int, void *); 196 197 #endif /* __KERNEL__ */ 198 199 #endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */ 200 201 #endif 202