cregit-Linux how code gets into the kernel

Release 4.7 include/uapi/linux/atm.h

/* 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 _UAPI_LINUX_ATM_H

#define _UAPI_LINUX_ATM_H

/*
 * BEGIN_xx and END_xx markers are used for automatic generation of
 * documentation. Do not change them.
 */

#include <linux/compiler.h>
#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; }

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static __inline__ int atmpvc_addr_in_use(struct sockaddr_atmpvc addr) { return addr.sap_addr.itf || addr.sap_addr.vpi || addr.sap_addr.vci; }

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/* * Some stuff for linux/sockios.h */ struct atmif_sioc { int number; int length; void __user *arg; }; typedef unsigned short atm_backend_t; #endif /* _UAPI_LINUX_ATM_H */

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