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Ian Jackson
8d201cae61
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
#ifndef XENCALL_PRIVATE_H
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#define XENCALL_PRIVATE_H
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#include <xentoollog.h>
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#include <xentoolcore_internal.h>
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#include <xencall.h>
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#include <xen/xen.h>
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#include <xen/sys/privcmd.h>
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#ifndef PAGE_SHIFT /* Mini-os, Yukk */
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#define PAGE_SHIFT 12
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#endif
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#ifndef __MINIOS__ /* Yukk */
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#define PAGE_SIZE (1UL << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE-1))
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#endif
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struct xencall_handle {
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xentoollog_logger *logger, *logger_tofree;
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unsigned flags;
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int fd;
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Xentoolcore__Active_Handle tc_ah;
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/*
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* A simple cache of unused, single page, hypercall buffers
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*
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* Protected by a global lock.
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*/
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#define BUFFER_CACHE_SIZE 4
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int buffer_cache_nr;
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void *buffer_cache[BUFFER_CACHE_SIZE];
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/*
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* Hypercall buffer statistics. All protected by the global
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* buffer_cache lock.
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*/
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int buffer_total_allocations;
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int buffer_total_releases;
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int buffer_current_allocations;
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int buffer_maximum_allocations;
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int buffer_cache_hits;
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int buffer_cache_misses;
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int buffer_cache_toobig;
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};
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int osdep_xencall_open(xencall_handle *xcall);
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int osdep_xencall_close(xencall_handle *xcall);
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int osdep_hypercall(xencall_handle *xcall, privcmd_hypercall_t *hypercall);
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void *osdep_alloc_pages(xencall_handle *xcall, size_t nr_pages);
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void osdep_free_pages(xencall_handle *xcall, void *p, size_t nr_pages);
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void buffer_release_cache(xencall_handle *xcall);
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#define PERROR(_f...) xtl_log(xcall->logger, XTL_ERROR, errno, "xencall", _f)
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#endif
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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