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/if.h> 28 29 /* Structures and constants associated with the DLCI device driver */ 30 31 struct dlci_add 32 { 33 char devname[IFNAMSIZ]; 34 short dlci; 35 }; 36 37 #define DLCI_GET_CONF (SIOCDEVPRIVATE + 2) 38 #define DLCI_SET_CONF (SIOCDEVPRIVATE + 3) 39 40 /* 41 * These are related to the Sangoma SDLA and should remain in order. 42 * Code within the SDLA module is based on the specifics of this 43 * structure. Change at your own peril. 44 */ 45 struct dlci_conf { 46 short flags; 47 short CIR_fwd; 48 short Bc_fwd; 49 short Be_fwd; 50 short CIR_bwd; 51 short Bc_bwd; 52 short Be_bwd; 53 54 /* these are part of the status read */ 55 short Tc_fwd; 56 short Tc_bwd; 57 short Tf_max; 58 short Tb_max; 59 60 /* add any new fields here above is a mirror of sdla_dlci_conf */ 61 }; 62 63 #define DLCI_GET_SLAVE (SIOCDEVPRIVATE + 4) 64 65 /* configuration flags for DLCI */ 66 #define DLCI_IGNORE_CIR_OUT 0x0001 67 #define DLCI_ACCOUNT_CIR_IN 0x0002 68 #define DLCI_BUFFER_IF 0x0008 69 70 #define DLCI_VALID_FLAGS 0x000B 71 72 /* FRAD driver uses these to indicate what it did with packet */ 73 #define DLCI_RET_OK 0x00 74 #define DLCI_RET_ERR 0x01 75 #define DLCI_RET_DROP 0x02 76 77 /* defines for the actual Frame Relay hardware */ 78 #define FRAD_GET_CONF (SIOCDEVPRIVATE) 79 #define FRAD_SET_CONF (SIOCDEVPRIVATE + 1) 80 81 #define FRAD_LAST_IOCTL FRAD_SET_CONF 82 83 /* 84 * Based on the setup for the Sangoma SDLA. If changes are 85 * necessary to this structure, a routine will need to be 86 * added to that module to copy fields. 87 */ 88 struct frad_conf 89 { 90 short station; 91 short flags; 92 short kbaud; 93 short clocking; 94 short mtu; 95 short T391; 96 short T392; 97 short N391; 98 short N392; 99 short N393; 100 short CIR_fwd; 101 short Bc_fwd; 102 short Be_fwd; 103 short CIR_bwd; 104 short Bc_bwd; 105 short Be_bwd; 106 107 /* Add new fields here, above is a mirror of the sdla_conf */ 108 109 }; 110 111 #define FRAD_STATION_CPE 0x0000 112 #define FRAD_STATION_NODE 0x0001 113 114 #define FRAD_TX_IGNORE_CIR 0x0001 115 #define FRAD_RX_ACCOUNT_CIR 0x0002 116 #define FRAD_DROP_ABORTED 0x0004 117 #define FRAD_BUFFERIF 0x0008 118 #define FRAD_STATS 0x0010 119 #define FRAD_MCI 0x0100 120 #define FRAD_AUTODLCI 0x8000 121 #define FRAD_VALID_FLAGS 0x811F 122 123 #define FRAD_CLOCK_INT 0x0001 124 #define FRAD_CLOCK_EXT 0x0000 125 126 #ifdef __KERNEL__ 127 128 #if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE) 129 130 /* these are the fields of an RFC 1490 header */ 131 struct frhdr 132 { 133 unsigned char control; 134 135 /* for IP packets, this can be the NLPID */ 136 unsigned char pad; 137 138 unsigned char NLPID; 139 unsigned char OUI[3]; 140 __be16 PID; 141 142 #define IP_NLPID pad 143 } __attribute__((packed)); 144 145 /* see RFC 1490 for the definition of the following */ 146 #define FRAD_I_UI 0x03 147 148 #define FRAD_P_PADDING 0x00 149 #define FRAD_P_Q933 0x08 150 #define FRAD_P_SNAP 0x80 151 #define FRAD_P_CLNP 0x81 152 #define FRAD_P_IP 0xCC 153 154 struct dlci_local 155 { 156 struct net_device_stats stats; 157 struct net_device *master; 158 struct net_device *slave; 159 struct dlci_conf config; 160 int configured; 161 struct list_head list; 162 163 /* callback function */ 164 void (*receive)(struct sk_buff *skb, struct net_device *); 165 }; 166 167 struct frad_local 168 { 169 struct net_device_stats stats; 170 171 /* devices which this FRAD is slaved to */ 172 struct net_device *master[CONFIG_DLCI_MAX]; 173 short dlci[CONFIG_DLCI_MAX]; 174 175 struct frad_conf config; 176 int configured; /* has this device been configured */ 177 int initialized; /* mem_start, port, irq set ? */ 178 179 /* callback functions */ 180 int (*activate)(struct net_device *, struct net_device *); 181 int (*deactivate)(struct net_device *, struct net_device *); 182 int (*assoc)(struct net_device *, struct net_device *); 183 int (*deassoc)(struct net_device *, struct net_device *); 184 int (*dlci_conf)(struct net_device *, struct net_device *, int get); 185 186 /* fields that are used by the Sangoma SDLA cards */ 187 struct timer_list timer; 188 int type; /* adapter type */ 189 int state; /* state of the S502/8 control latch */ 190 int buffer; /* current buffer for S508 firmware */ 191 }; 192 193 #endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */ 194 195 extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *)); 196 197 #endif /* __KERNEL__ */ 198 199 #endif 200