atm.h revision 3ea2fb985f3aa979a2b270d01fa651a5ef814464
1/* atm.h - general ATM declarations */ 2 3/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ 4 5 6/* 7 * WARNING: User-space programs should not #include <linux/atm.h> directly. 8 * Instead, #include <atm.h> 9 */ 10 11#ifndef _LINUX_ATM_H 12#define _LINUX_ATM_H 13 14/* 15 * BEGIN_xx and END_xx markers are used for automatic generation of 16 * documentation. Do not change them. 17 */ 18 19#include <linux/atmapi.h> 20#include <linux/atmsap.h> 21#include <linux/atmioc.h> 22#include <linux/types.h> 23 24 25/* general ATM constants */ 26#define ATM_CELL_SIZE 53 /* ATM cell size incl. header */ 27#define ATM_CELL_PAYLOAD 48 /* ATM payload size */ 28#define ATM_AAL0_SDU 52 /* AAL0 SDU size */ 29#define ATM_MAX_AAL34_PDU 65535 /* maximum AAL3/4 PDU payload */ 30#define ATM_AAL5_TRAILER 8 /* AAL5 trailer size */ 31#define ATM_MAX_AAL5_PDU 65535 /* maximum AAL5 PDU payload */ 32#define ATM_MAX_CDV 9999 /* maximum (default) CDV */ 33#define ATM_NOT_RSV_VCI 32 /* first non-reserved VCI value */ 34 35#define ATM_MAX_VPI 255 /* maximum VPI at the UNI */ 36#define ATM_MAX_VPI_NNI 4096 /* maximum VPI at the NNI */ 37#define ATM_MAX_VCI 65535 /* maximum VCI */ 38 39 40/* "protcol" values for the socket system call */ 41#define ATM_NO_AAL 0 /* AAL not specified */ 42#define ATM_AAL0 13 /* "raw" ATM cells */ 43#define ATM_AAL1 1 /* AAL1 (CBR) */ 44#define ATM_AAL2 2 /* AAL2 (VBR) */ 45#define ATM_AAL34 3 /* AAL3/4 (data) */ 46#define ATM_AAL5 5 /* AAL5 (data) */ 47 48/* 49 * socket option name coding functions 50 * 51 * Note that __SO_ENCODE and __SO_LEVEL are somewhat a hack since the 52 * << 22 only reserves 9 bits for the level. On some architectures 53 * SOL_SOCKET is 0xFFFF, so that's a bit of a problem 54 */ 55 56#define __SO_ENCODE(l,n,t) ((((l) & 0x1FF) << 22) | ((n) << 16) | \ 57 sizeof(t)) 58#define __SO_LEVEL_MATCH(c,m) (((c) >> 22) == ((m) & 0x1FF)) 59#define __SO_NUMBER(c) (((c) >> 16) & 0x3f) 60#define __SO_SIZE(c) ((c) & 0x3fff) 61 62/* 63 * ATM layer 64 */ 65 66#define SO_SETCLP __SO_ENCODE(SOL_ATM,0,int) 67 /* set CLP bit value - TODO */ 68#define SO_CIRANGE __SO_ENCODE(SOL_ATM,1,struct atm_cirange) 69 /* connection identifier range; socket must be 70 bound or connected */ 71#define SO_ATMQOS __SO_ENCODE(SOL_ATM,2,struct atm_qos) 72 /* Quality of Service setting */ 73#define SO_ATMSAP __SO_ENCODE(SOL_ATM,3,struct atm_sap) 74 /* Service Access Point */ 75#define SO_ATMPVC __SO_ENCODE(SOL_ATM,4,struct sockaddr_atmpvc) 76 /* "PVC" address (also for SVCs); get only */ 77#define SO_MULTIPOINT __SO_ENCODE(SOL_ATM, 5, int) 78 /* make this vc a p2mp */ 79 80 81/* 82 * Note @@@: since the socket layers don't really distinguish the control and 83 * the data plane but generally seems to be data plane-centric, any layer is 84 * about equally wrong for the SAP. If you have a better idea about this, 85 * please speak up ... 86 */ 87 88 89/* ATM cell header (for AAL0) */ 90 91/* BEGIN_CH */ 92#define ATM_HDR_GFC_MASK 0xf0000000 93#define ATM_HDR_GFC_SHIFT 28 94#define ATM_HDR_VPI_MASK 0x0ff00000 95#define ATM_HDR_VPI_SHIFT 20 96#define ATM_HDR_VCI_MASK 0x000ffff0 97#define ATM_HDR_VCI_SHIFT 4 98#define ATM_HDR_PTI_MASK 0x0000000e 99#define ATM_HDR_PTI_SHIFT 1 100#define ATM_HDR_CLP 0x00000001 101/* END_CH */ 102 103 104/* PTI codings */ 105 106/* BEGIN_PTI */ 107#define ATM_PTI_US0 0 /* user data cell, congestion not exp, SDU-type 0 */ 108#define ATM_PTI_US1 1 /* user data cell, congestion not exp, SDU-type 1 */ 109#define ATM_PTI_UCES0 2 /* user data cell, cong. experienced, SDU-type 0 */ 110#define ATM_PTI_UCES1 3 /* user data cell, cong. experienced, SDU-type 1 */ 111#define ATM_PTI_SEGF5 4 /* segment OAM F5 flow related cell */ 112#define ATM_PTI_E2EF5 5 /* end-to-end OAM F5 flow related cell */ 113#define ATM_PTI_RSV_RM 6 /* reserved for traffic control/resource mgmt */ 114#define ATM_PTI_RSV 7 /* reserved */ 115/* END_PTI */ 116 117 118/* 119 * The following items should stay in linux/atm.h, which should be linked to 120 * netatm/atm.h 121 */ 122 123/* Traffic description */ 124 125#define ATM_NONE 0 /* no traffic */ 126#define ATM_UBR 1 127#define ATM_CBR 2 128#define ATM_VBR 3 129#define ATM_ABR 4 130#define ATM_ANYCLASS 5 /* compatible with everything */ 131 132#define ATM_MAX_PCR -1 /* maximum available PCR */ 133 134struct atm_trafprm { 135 unsigned char traffic_class; /* traffic class (ATM_UBR, ...) */ 136 int max_pcr; /* maximum PCR in cells per second */ 137 int pcr; /* desired PCR in cells per second */ 138 int min_pcr; /* minimum PCR in cells per second */ 139 int max_cdv; /* maximum CDV in microseconds */ 140 int max_sdu; /* maximum SDU in bytes */ 141 /* extra params for ABR */ 142 unsigned int icr; /* Initial Cell Rate (24-bit) */ 143 unsigned int tbe; /* Transient Buffer Exposure (24-bit) */ 144 unsigned int frtt : 24; /* Fixed Round Trip Time (24-bit) */ 145 unsigned int rif : 4; /* Rate Increment Factor (4-bit) */ 146 unsigned int rdf : 4; /* Rate Decrease Factor (4-bit) */ 147 unsigned int nrm_pres :1; /* nrm present bit */ 148 unsigned int trm_pres :1; /* rm present bit */ 149 unsigned int adtf_pres :1; /* adtf present bit */ 150 unsigned int cdf_pres :1; /* cdf present bit*/ 151 unsigned int nrm :3; /* Max # of Cells for each forward RM cell (3-bit) */ 152 unsigned int trm :3; /* Time between forward RM cells (3-bit) */ 153 unsigned int adtf :10; /* ACR Decrease Time Factor (10-bit) */ 154 unsigned int cdf :3; /* Cutoff Decrease Factor (3-bit) */ 155 unsigned int spare :9; /* spare bits */ 156}; 157 158struct atm_qos { 159 struct atm_trafprm txtp; /* parameters in TX direction */ 160 struct atm_trafprm rxtp __ATM_API_ALIGN; 161 /* parameters in RX direction */ 162 unsigned char aal __ATM_API_ALIGN; 163}; 164 165/* PVC addressing */ 166 167#define ATM_ITF_ANY -1 /* "magic" PVC address values */ 168#define ATM_VPI_ANY -1 169#define ATM_VCI_ANY -1 170#define ATM_VPI_UNSPEC -2 171#define ATM_VCI_UNSPEC -2 172 173 174struct sockaddr_atmpvc { 175 unsigned short sap_family; /* address family, AF_ATMPVC */ 176 struct { /* PVC address */ 177 short itf; /* ATM interface */ 178 short vpi; /* VPI (only 8 bits at UNI) */ 179 int vci; /* VCI (only 16 bits at UNI) */ 180 } sap_addr __ATM_API_ALIGN; /* PVC address */ 181}; 182 183/* SVC addressing */ 184 185#define ATM_ESA_LEN 20 /* ATM End System Address length */ 186#define ATM_E164_LEN 12 /* maximum E.164 number length */ 187 188#define ATM_AFI_DCC 0x39 /* DCC ATM Format */ 189#define ATM_AFI_ICD 0x47 /* ICD ATM Format */ 190#define ATM_AFI_E164 0x45 /* E.164 ATM Format */ 191#define ATM_AFI_LOCAL 0x49 /* Local ATM Format */ 192 193#define ATM_AFI_DCC_GROUP 0xBD /* DCC ATM Group Format */ 194#define ATM_AFI_ICD_GROUP 0xC5 /* ICD ATM Group Format */ 195#define ATM_AFI_E164_GROUP 0xC3 /* E.164 ATM Group Format */ 196#define ATM_AFI_LOCAL_GROUP 0xC7 /* Local ATM Group Format */ 197 198#define ATM_LIJ_NONE 0 /* no leaf-initiated join */ 199#define ATM_LIJ 1 /* request joining */ 200#define ATM_LIJ_RPJ 2 /* set to root-prompted join */ 201#define ATM_LIJ_NJ 3 /* set to network join */ 202 203 204struct sockaddr_atmsvc { 205 unsigned short sas_family; /* address family, AF_ATMSVC */ 206 struct { /* SVC address */ 207 unsigned char prv[ATM_ESA_LEN];/* private ATM address */ 208 char pub[ATM_E164_LEN+1]; /* public address (E.164) */ 209 /* unused addresses must be bzero'ed */ 210 char lij_type; /* role in LIJ call; one of ATM_LIJ* */ 211 __u32 lij_id; /* LIJ call identifier */ 212 } sas_addr __ATM_API_ALIGN; /* SVC address */ 213}; 214 215 216static __inline__ int atmsvc_addr_in_use(struct sockaddr_atmsvc addr) 217{ 218 return *addr.sas_addr.prv || *addr.sas_addr.pub; 219} 220 221 222static __inline__ int atmpvc_addr_in_use(struct sockaddr_atmpvc addr) 223{ 224 return addr.sap_addr.itf || addr.sap_addr.vpi || addr.sap_addr.vci; 225} 226 227 228/* 229 * Some stuff for linux/sockios.h 230 */ 231 232struct atmif_sioc { 233 int number; 234 int length; 235 void *arg; 236}; 237 238typedef unsigned short atm_backend_t; 239#endif 240