upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-05-28 04:12:45 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

buf_ring: Make buf_ring.h amenable to userspace compilation

Browse source 
This will be useful for adding test cases.

Reviewed by:	andrew
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D45869

(cherry picked from commit a161269b2451140a45de2d0cae0dad84f9e7b439)
This commit is contained in:
Mark Johnston 2024-07-11 14:55:11 -04:00
parent dc1f4c3d9a
commit 7d521f0a61
1 changed files with 36 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
sys/sys/buf_ring.h
View file

@ -30,11 +30,18 @@
#ifndef _SYS_BUF_RING_H_
#define _SYS_BUF_RING_H_
#include <sys/param.h>
#include <sys/kassert.h>
#include <machine/atomic.h>
#include <machine/cpu.h>
#ifdef DEBUG_BUFRING
#ifdef _KERNEL
#include <sys/lock.h>
#include <sys/mutex.h>
#else
#error "DEBUG_BUFRING is only supported in kernel"
#endif
#endif
struct buf_ring {
@ -361,8 +368,36 @@ buf_ring_count(struct buf_ring *br)
& br->br_prod_mask);
}
#ifdef _KERNEL
struct buf_ring *buf_ring_alloc(int count, struct malloc_type *type, int flags,
struct mtx *);
void buf_ring_free(struct buf_ring *br, struct malloc_type *type);
#else
#endif
#include <stdlib.h>
static inline struct buf_ring *
buf_ring_alloc(int count)
{
struct buf_ring *br;
KASSERT(powerof2(count), ("buf ring must be size power of 2"));
br = calloc(1, sizeof(struct buf_ring) + count * sizeof(void *));
if (br == NULL)
return (NULL);
br->br_prod_size = br->br_cons_size = count;
br->br_prod_mask = br->br_cons_mask = count - 1;
br->br_prod_head = br->br_cons_head = 0;
br->br_prod_tail = br->br_cons_tail = 0;
return (br);
}
static inline void
buf_ring_free(struct buf_ring *br)
{
free(br);
}
#endif /* !_KERNEL */
#endif /* _SYS_BUF_RING_H_ */