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 20 #include <linux/atmapi.h> 21 #include <linux/atmsap.h> 22 #include <linux/atmioc.h> 23 #include <linux/types.h> 24 25 26 /* general ATM constants */ 27 #define ATM_CELL_SIZE 53 /* ATM cell size incl. header */ 28 #define ATM_CELL_PAYLOAD 48 /* ATM payload size */ 29 #define ATM_AAL0_SDU 52 /* AAL0 SDU size */ 30 #define ATM_MAX_AAL34_PDU 65535 /* maximum AAL3/4 PDU payload */ 31 #define ATM_AAL5_TRAILER 8 /* AAL5 trailer size */ 32 #define ATM_MAX_AAL5_PDU 65535 /* maximum AAL5 PDU payload */ 33 #define ATM_MAX_CDV 9999 /* maximum (default) CDV */ 34 #define ATM_NOT_RSV_VCI 32 /* first non-reserved VCI value */ 35 36 #define ATM_MAX_VPI 255 /* maximum VPI at the UNI */ 37 #define ATM_MAX_VPI_NNI 4096 /* maximum VPI at the NNI */ 38 #define ATM_MAX_VCI 65535 /* maximum VCI */ 39 40 41 /* "protcol" values for the socket system call */ 42 #define ATM_NO_AAL 0 /* AAL not specified */ 43 #define ATM_AAL0 13 /* "raw" ATM cells */ 44 #define ATM_AAL1 1 /* AAL1 (CBR) */ 45 #define ATM_AAL2 2 /* AAL2 (VBR) */ 46 #define ATM_AAL34 3 /* AAL3/4 (data) */ 47 #define ATM_AAL5 5 /* AAL5 (data) */ 48 49 /* 50 * socket option name coding functions 51 * 52 * Note that __SO_ENCODE and __SO_LEVEL are somewhat a hack since the 53 * << 22 only reserves 9 bits for the level. On some architectures 54 * SOL_SOCKET is 0xFFFF, so that's a bit of a problem 55 */ 56 57 #define __SO_ENCODE(l,n,t) ((((l) & 0x1FF) << 22) | ((n) << 16) | \ 58 sizeof(t)) 59 #define __SO_LEVEL_MATCH(c,m) (((c) >> 22) == ((m) & 0x1FF)) 60 #define __SO_NUMBER(c) (((c) >> 16) & 0x3f) 61 #define __SO_SIZE(c) ((c) & 0x3fff) 62 63 /* 64 * ATM layer 65 */ 66 67 #define SO_SETCLP __SO_ENCODE(SOL_ATM,0,int) 68 /* set CLP bit value - TODO */ 69 #define SO_CIRANGE __SO_ENCODE(SOL_ATM,1,struct atm_cirange) 70 /* connection identifier range; socket must be 71 bound or connected */ 72 #define SO_ATMQOS __SO_ENCODE(SOL_ATM,2,struct atm_qos) 73 /* Quality of Service setting */ 74 #define SO_ATMSAP __SO_ENCODE(SOL_ATM,3,struct atm_sap) 75 /* Service Access Point */ 76 #define SO_ATMPVC __SO_ENCODE(SOL_ATM,4,struct sockaddr_atmpvc) 77 /* "PVC" address (also for SVCs); get only */ 78 #define SO_MULTIPOINT __SO_ENCODE(SOL_ATM, 5, int) 79 /* make this vc a p2mp */ 80 81 82 /* 83 * Note @@@: since the socket layers don't really distinguish the control and 84 * the data plane but generally seems to be data plane-centric, any layer is 85 * about equally wrong for the SAP. If you have a better idea about this, 86 * please speak up ... 87 */ 88 89 90 /* ATM cell header (for AAL0) */ 91 92 /* BEGIN_CH */ 93 #define ATM_HDR_GFC_MASK 0xf0000000 94 #define ATM_HDR_GFC_SHIFT 28 95 #define ATM_HDR_VPI_MASK 0x0ff00000 96 #define ATM_HDR_VPI_SHIFT 20 97 #define ATM_HDR_VCI_MASK 0x000ffff0 98 #define ATM_HDR_VCI_SHIFT 4 99 #define ATM_HDR_PTI_MASK 0x0000000e 100 #define ATM_HDR_PTI_SHIFT 1 101 #define ATM_HDR_CLP 0x00000001 102 /* END_CH */ 103 104 105 /* PTI codings */ 106 107 /* BEGIN_PTI */ 108 #define ATM_PTI_US0 0 /* user data cell, congestion not exp, SDU-type 0 */ 109 #define ATM_PTI_US1 1 /* user data cell, congestion not exp, SDU-type 1 */ 110 #define ATM_PTI_UCES0 2 /* user data cell, cong. experienced, SDU-type 0 */ 111 #define ATM_PTI_UCES1 3 /* user data cell, cong. experienced, SDU-type 1 */ 112 #define ATM_PTI_SEGF5 4 /* segment OAM F5 flow related cell */ 113 #define ATM_PTI_E2EF5 5 /* end-to-end OAM F5 flow related cell */ 114 #define ATM_PTI_RSV_RM 6 /* reserved for traffic control/resource mgmt */ 115 #define ATM_PTI_RSV 7 /* reserved */ 116 /* END_PTI */ 117 118 119 /* 120 * The following items should stay in linux/atm.h, which should be linked to 121 * netatm/atm.h 122 */ 123 124 /* Traffic description */ 125 126 #define ATM_NONE 0 /* no traffic */ 127 #define ATM_UBR 1 128 #define ATM_CBR 2 129 #define ATM_VBR 3 130 #define ATM_ABR 4 131 #define ATM_ANYCLASS 5 /* compatible with everything */ 132 133 #define ATM_MAX_PCR -1 /* maximum available PCR */ 134 135 struct atm_trafprm { 136 unsigned char traffic_class; /* traffic class (ATM_UBR, ...) */ 137 int max_pcr; /* maximum PCR in cells per second */ 138 int pcr; /* desired PCR in cells per second */ 139 int min_pcr; /* minimum PCR in cells per second */ 140 int max_cdv; /* maximum CDV in microseconds */ 141 int max_sdu; /* maximum SDU in bytes */ 142 /* extra params for ABR */ 143 unsigned int icr; /* Initial Cell Rate (24-bit) */ 144 unsigned int tbe; /* Transient Buffer Exposure (24-bit) */ 145 unsigned int frtt : 24; /* Fixed Round Trip Time (24-bit) */ 146 unsigned int rif : 4; /* Rate Increment Factor (4-bit) */ 147 unsigned int rdf : 4; /* Rate Decrease Factor (4-bit) */ 148 unsigned int nrm_pres :1; /* nrm present bit */ 149 unsigned int trm_pres :1; /* rm present bit */ 150 unsigned int adtf_pres :1; /* adtf present bit */ 151 unsigned int cdf_pres :1; /* cdf present bit*/ 152 unsigned int nrm :3; /* Max # of Cells for each forward RM cell (3-bit) */ 153 unsigned int trm :3; /* Time between forward RM cells (3-bit) */ 154 unsigned int adtf :10; /* ACR Decrease Time Factor (10-bit) */ 155 unsigned int cdf :3; /* Cutoff Decrease Factor (3-bit) */ 156 unsigned int spare :9; /* spare bits */ 157 }; 158 159 struct atm_qos { 160 struct atm_trafprm txtp; /* parameters in TX direction */ 161 struct atm_trafprm rxtp __ATM_API_ALIGN; 162 /* parameters in RX direction */ 163 unsigned char aal __ATM_API_ALIGN; 164 }; 165 166 /* PVC addressing */ 167 168 #define ATM_ITF_ANY -1 /* "magic" PVC address values */ 169 #define ATM_VPI_ANY -1 170 #define ATM_VCI_ANY -1 171 #define ATM_VPI_UNSPEC -2 172 #define ATM_VCI_UNSPEC -2 173 174 175 struct sockaddr_atmpvc { 176 unsigned short sap_family; /* address family, AF_ATMPVC */ 177 struct { /* PVC address */ 178 short itf; /* ATM interface */ 179 short vpi; /* VPI (only 8 bits at UNI) */ 180 int vci; /* VCI (only 16 bits at UNI) */ 181 } sap_addr __ATM_API_ALIGN; /* PVC address */ 182 }; 183 184 /* SVC addressing */ 185 186 #define ATM_ESA_LEN 20 /* ATM End System Address length */ 187 #define ATM_E164_LEN 12 /* maximum E.164 number length */ 188 189 #define ATM_AFI_DCC 0x39 /* DCC ATM Format */ 190 #define ATM_AFI_ICD 0x47 /* ICD ATM Format */ 191 #define ATM_AFI_E164 0x45 /* E.164 ATM Format */ 192 #define ATM_AFI_LOCAL 0x49 /* Local ATM Format */ 193 194 #define ATM_AFI_DCC_GROUP 0xBD /* DCC ATM Group Format */ 195 #define ATM_AFI_ICD_GROUP 0xC5 /* ICD ATM Group Format */ 196 #define ATM_AFI_E164_GROUP 0xC3 /* E.164 ATM Group Format */ 197 #define ATM_AFI_LOCAL_GROUP 0xC7 /* Local ATM Group Format */ 198 199 #define ATM_LIJ_NONE 0 /* no leaf-initiated join */ 200 #define ATM_LIJ 1 /* request joining */ 201 #define ATM_LIJ_RPJ 2 /* set to root-prompted join */ 202 #define ATM_LIJ_NJ 3 /* set to network join */ 203 204 205 struct sockaddr_atmsvc { 206 unsigned short sas_family; /* address family, AF_ATMSVC */ 207 struct { /* SVC address */ 208 unsigned char prv[ATM_ESA_LEN];/* private ATM address */ 209 char pub[ATM_E164_LEN+1]; /* public address (E.164) */ 210 /* unused addresses must be bzero'ed */ 211 char lij_type; /* role in LIJ call; one of ATM_LIJ* */ 212 __u32 lij_id; /* LIJ call identifier */ 213 } sas_addr __ATM_API_ALIGN; /* SVC address */ 214 }; 215 216 217 static __inline__ int atmsvc_addr_in_use(struct sockaddr_atmsvc addr) 218 { 219 return *addr.sas_addr.prv || *addr.sas_addr.pub; 220 } 221 222 223 static __inline__ int atmpvc_addr_in_use(struct sockaddr_atmpvc addr) 224 { 225 return addr.sap_addr.itf || addr.sap_addr.vpi || addr.sap_addr.vci; 226 } 227 228 229 /* 230 * Some stuff for linux/sockios.h 231 */ 232 233 struct atmif_sioc { 234 int number; 235 int length; 236 void *arg; 237 }; 238 239 240 typedef unsigned short atm_backend_t; 241 #endif 242
