Commit c2e75634 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

net: atm: bring back zatm uAPI 



Jiri reports that linux-atm does not build without this header.
Bring it back. It's completely dead code but we can't break
the build for user space :(

Reported-by: default avatarJiri Slaby <jirislaby@kernel.org>
Fixes: 052e1f01 ("net: atm: remove support for ZeitNet ZN122x ATM devices")
Link: https://lore.kernel.org/all/8576aef3-37e4-8bae-bab5-08f82a78efd3@kernel.org/
Link: https://lore.kernel.org/r/20220810164547.484378-1-kuba@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e34f4934

include/uapi/linux/atm_zatm.h

0 → 100644
+47 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

/* atm_zatm.h - Driver-specific declarations of the ZATM driver (for use by

		driver-specific utilities) */



/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */





#ifndef LINUX_ATM_ZATM_H

#define LINUX_ATM_ZATM_H



/*

 * Note: non-kernel programs including this file must also include

 * sys/types.h for struct timeval

 */



#include <linux/atmapi.h>

#include <linux/atmioc.h>



#define ZATM_GETPOOL	_IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)

						/* get pool statistics */

#define ZATM_GETPOOLZ	_IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)

						/* get statistics and zero */

#define ZATM_SETPOOL	_IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)

						/* set pool parameters */



struct zatm_pool_info {

	int ref_count;			/* free buffer pool usage counters */

	int low_water,high_water;	/* refill parameters */

	int rqa_count,rqu_count;	/* queue condition counters */

	int offset,next_off;		/* alignment optimizations: offset */

	int next_cnt,next_thres;	/* repetition counter and threshold */

};



struct zatm_pool_req {

	int pool_num;			/* pool number */

	struct zatm_pool_info info;	/* actual information */

};



#define ZATM_OAM_POOL		0	/* free buffer pool for OAM cells */

#define ZATM_AAL0_POOL		1	/* free buffer pool for AAL0 cells */

#define ZATM_AAL5_POOL_BASE	2	/* first AAL5 free buffer pool */

#define ZATM_LAST_POOL	ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */



#define ZATM_TIMER_HISTORY_SIZE	16	/* number of timer adjustments to

					   record; must be 2^n */



#endif