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atm.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* atm.h - general ATM declarations */ /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ /* * WARNING: User-space programs should not #include <linux/atm.h> directly. * Instead, #include <atm.h> */ #ifndef _LINUX_ATM_H #define _LINUX_ATM_H /* * BEGIN_xx and END_xx markers are used for automatic generation of * documentation. Do not change them. */ #include <linux/atmapi.h> #include <linux/atmsap.h> #include <linux/atmioc.h> #include <linux/types.h> /* general ATM constants */ #define ATM_CELL_SIZE 53 /* ATM cell size incl. header */ #define ATM_CELL_PAYLOAD 48 /* ATM payload size */ #define ATM_AAL0_SDU 52 /* AAL0 SDU size */ #define ATM_MAX_AAL34_PDU 65535 /* maximum AAL3/4 PDU payload */ #define ATM_AAL5_TRAILER 8 /* AAL5 trailer size */ #define ATM_MAX_AAL5_PDU 65535 /* maximum AAL5 PDU payload */ #define ATM_MAX_CDV 9999 /* maximum (default) CDV */ #define ATM_NOT_RSV_VCI 32 /* first non-reserved VCI value */ #define ATM_MAX_VPI 255 /* maximum VPI at the UNI */ #define ATM_MAX_VPI_NNI 4096 /* maximum VPI at the NNI */ #define ATM_MAX_VCI 65535 /* maximum VCI */ /* "protcol" values for the socket system call */ #define ATM_NO_AAL 0 /* AAL not specified */ #define ATM_AAL0 13 /* "raw" ATM cells */ #define ATM_AAL1 1 /* AAL1 (CBR) */ #define ATM_AAL2 2 /* AAL2 (VBR) */ #define ATM_AAL34 3 /* AAL3/4 (data) */ #define ATM_AAL5 5 /* AAL5 (data) */ /* * socket option name coding functions * * Note that __SO_ENCODE and __SO_LEVEL are somewhat a hack since the * << 22 only reserves 9 bits for the level. On some architectures * SOL_SOCKET is 0xFFFF, so that's a bit of a problem */ #define __SO_ENCODE(l,n,t) ((((l) & 0x1FF) << 22) | ((n) << 16) | \ sizeof(t)) #define __SO_LEVEL_MATCH(c,m) (((c) >> 22) == ((m) & 0x1FF)) #define __SO_NUMBER(c) (((c) >> 16) & 0x3f) #define __SO_SIZE(c) ((c) & 0x3fff) /* * ATM layer */ #define SO_SETCLP __SO_ENCODE(SOL_ATM,0,int) /* set CLP bit value - TODO */ #define SO_CIRANGE __SO_ENCODE(SOL_ATM,1,struct atm_cirange) /* connection identifier range; socket must be bound or connected */ #define SO_ATMQOS __SO_ENCODE(SOL_ATM,2,struct atm_qos) /* Quality of Service setting */ #define SO_ATMSAP __SO_ENCODE(SOL_ATM,3,struct atm_sap) /* Service Access Point */ #define SO_ATMPVC __SO_ENCODE(SOL_ATM,4,struct sockaddr_atmpvc) /* "PVC" address (also for SVCs); get only */ #define SO_MULTIPOINT __SO_ENCODE(SOL_ATM, 5, int) /* make this vc a p2mp */ /* * Note @@@: since the socket layers don't really distinguish the control and * the data plane but generally seems to be data plane-centric, any layer is * about equally wrong for the SAP. If you have a better idea about this, * please speak up ... */ /* ATM cell header (for AAL0) */ /* BEGIN_CH */ #define ATM_HDR_GFC_MASK 0xf0000000 #define ATM_HDR_GFC_SHIFT 28 #define ATM_HDR_VPI_MASK 0x0ff00000 #define ATM_HDR_VPI_SHIFT 20 #define ATM_HDR_VCI_MASK 0x000ffff0 #define ATM_HDR_VCI_SHIFT 4 #define ATM_HDR_PTI_MASK 0x0000000e #define ATM_HDR_PTI_SHIFT 1 #define ATM_HDR_CLP 0x00000001 /* END_CH */ /* PTI codings */ /* BEGIN_PTI */ #define ATM_PTI_US0 0 /* user data cell, congestion not exp, SDU-type 0 */ #define ATM_PTI_US1 1 /* user data cell, congestion not exp, SDU-type 1 */ #define ATM_PTI_UCES0 2 /* user data cell, cong. experienced, SDU-type 0 */ #define ATM_PTI_UCES1 3 /* user data cell, cong. experienced, SDU-type 1 */ #define ATM_PTI_SEGF5 4 /* segment OAM F5 flow related cell */ #define ATM_PTI_E2EF5 5 /* end-to-end OAM F5 flow related cell */ #define ATM_PTI_RSV_RM 6 /* reserved for traffic control/resource mgmt */ #define ATM_PTI_RSV 7 /* reserved */ /* END_PTI */ /* * The following items should stay in linux/atm.h, which should be linked to * netatm/atm.h */ /* Traffic description */ #define ATM_NONE 0 /* no traffic */ #define ATM_UBR 1 #define ATM_CBR 2 #define ATM_VBR 3 #define ATM_ABR 4 #define ATM_ANYCLASS 5 /* compatible with everything */ #define ATM_MAX_PCR -1 /* maximum available PCR */ struct atm_trafprm { unsigned char traffic_class; /* traffic class (ATM_UBR, ...) */ int max_pcr; /* maximum PCR in cells per second */ int pcr; /* desired PCR in cells per second */ int min_pcr; /* minimum PCR in cells per second */ int max_cdv; /* maximum CDV in microseconds */ int max_sdu; /* maximum SDU in bytes */ /* extra params for ABR */ unsigned int icr; /* Initial Cell Rate (24-bit) */ unsigned int tbe; /* Transient Buffer Exposure (24-bit) */ unsigned int frtt : 24; /* Fixed Round Trip Time (24-bit) */ unsigned int rif : 4; /* Rate Increment Factor (4-bit) */ unsigned int rdf : 4; /* Rate Decrease Factor (4-bit) */ unsigned int nrm_pres :1; /* nrm present bit */ unsigned int trm_pres :1; /* rm present bit */ unsigned int adtf_pres :1; /* adtf present bit */ unsigned int cdf_pres :1; /* cdf present bit*/ unsigned int nrm :3; /* Max # of Cells for each forward RM cell (3-bit) */ unsigned int trm :3; /* Time between forward RM cells (3-bit) */ unsigned int adtf :10; /* ACR Decrease Time Factor (10-bit) */ unsigned int cdf :3; /* Cutoff Decrease Factor (3-bit) */ unsigned int spare :9; /* spare bits */ }; struct atm_qos { struct atm_trafprm txtp; /* parameters in TX direction */ struct atm_trafprm rxtp __ATM_API_ALIGN; /* parameters in RX direction */ unsigned char aal __ATM_API_ALIGN; }; /* PVC addressing */ #define ATM_ITF_ANY -1 /* "magic" PVC address values */ #define ATM_VPI_ANY -1 #define ATM_VCI_ANY -1 #define ATM_VPI_UNSPEC -2 #define ATM_VCI_UNSPEC -2 struct sockaddr_atmpvc { unsigned short sap_family; /* address family, AF_ATMPVC */ struct { /* PVC address */ short itf; /* ATM interface */ short vpi; /* VPI (only 8 bits at UNI) */ int vci; /* VCI (only 16 bits at UNI) */ } sap_addr __ATM_API_ALIGN; /* PVC address */ }; /* SVC addressing */ #define ATM_ESA_LEN 20 /* ATM End System Address length */ #define ATM_E164_LEN 12 /* maximum E.164 number length */ #define ATM_AFI_DCC 0x39 /* DCC ATM Format */ #define ATM_AFI_ICD 0x47 /* ICD ATM Format */ #define ATM_AFI_E164 0x45 /* E.164 ATM Format */ #define ATM_AFI_LOCAL 0x49 /* Local ATM Format */ #define ATM_AFI_DCC_GROUP 0xBD /* DCC ATM Group Format */ #define ATM_AFI_ICD_GROUP 0xC5 /* ICD ATM Group Format */ #define ATM_AFI_E164_GROUP 0xC3 /* E.164 ATM Group Format */ #define ATM_AFI_LOCAL_GROUP 0xC7 /* Local ATM Group Format */ #define ATM_LIJ_NONE 0 /* no leaf-initiated join */ #define ATM_LIJ 1 /* request joining */ #define ATM_LIJ_RPJ 2 /* set to root-prompted join */ #define ATM_LIJ_NJ 3 /* set to network join */ struct sockaddr_atmsvc { unsigned short sas_family; /* address family, AF_ATMSVC */ struct { /* SVC address */ unsigned char prv[ATM_ESA_LEN];/* private ATM address */ char pub[ATM_E164_LEN+1]; /* public address (E.164) */ /* unused addresses must be bzero'ed */ char lij_type; /* role in LIJ call; one of ATM_LIJ* */ __u32 lij_id; /* LIJ call identifier */ } sas_addr __ATM_API_ALIGN; /* SVC address */ }; static __inline__ int atmsvc_addr_in_use(struct sockaddr_atmsvc addr) { return *addr.sas_addr.prv || *addr.sas_addr.pub; } static __inline__ int atmpvc_addr_in_use(struct sockaddr_atmpvc addr) { return addr.sap_addr.itf || addr.sap_addr.vpi || addr.sap_addr.vci; } /* * Some stuff for linux/sockios.h */ struct atmif_sioc { int number; int length; void *arg; }; typedef unsigned short atm_backend_t; #endif /* _LINUX_ATM_H */