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Staging: hv: Move a subset of definitions from ring_buffer.h to hyperv.h
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Move a subset of definitions from ring_buffer.h to hyperv.h.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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K. Y. Srinivasan authored and Greg Kroah-Hartman committed May 17, 2011
1 parent a363bf7 commit 7effffb
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Showing 2 changed files with 41 additions and 43 deletions.
41 changes: 41 additions & 0 deletions drivers/staging/hv/hyperv.h
Original file line number Diff line number Diff line change
Expand Up @@ -59,5 +59,46 @@ struct hv_multipage_buffer {

#pragma pack(pop)

struct hv_ring_buffer {
/* Offset in bytes from the start of ring data below */
u32 write_index;

/* Offset in bytes from the start of ring data below */
u32 read_index;

u32 interrupt_mask;

/* Pad it to PAGE_SIZE so that data starts on page boundary */
u8 reserved[4084];

/* NOTE:
* The interrupt_mask field is used only for channels but since our
* vmbus connection also uses this data structure and its data starts
* here, we commented out this field.
*/

/*
* Ring data starts here + RingDataStartOffset
* !!! DO NOT place any fields below this !!!
*/
u8 buffer[0];
} __packed;

struct hv_ring_buffer_info {
struct hv_ring_buffer *ring_buffer;
u32 ring_size; /* Include the shared header */
spinlock_t ring_lock;

u32 ring_datasize; /* < ring_size */
u32 ring_data_startoffset;
};

struct hv_ring_buffer_debug_info {
u32 current_interrupt_mask;
u32 current_read_index;
u32 current_write_index;
u32 bytes_avail_toread;
u32 bytes_avail_towrite;
};

#endif /* _HYPERV_H */
43 changes: 0 additions & 43 deletions drivers/staging/hv/ring_buffer.h
Original file line number Diff line number Diff line change
Expand Up @@ -28,49 +28,6 @@

#include <linux/scatterlist.h>

struct hv_ring_buffer {
/* Offset in bytes from the start of ring data below */
u32 write_index;

/* Offset in bytes from the start of ring data below */
u32 read_index;

u32 interrupt_mask;

/* Pad it to PAGE_SIZE so that data starts on page boundary */
u8 reserved[4084];

/* NOTE:
* The interrupt_mask field is used only for channels but since our
* vmbus connection also uses this data structure and its data starts
* here, we commented out this field.
*/

/*
* Ring data starts here + RingDataStartOffset
* !!! DO NOT place any fields below this !!!
*/
u8 buffer[0];
} __packed;

struct hv_ring_buffer_info {
struct hv_ring_buffer *ring_buffer;
u32 ring_size; /* Include the shared header */
spinlock_t ring_lock;

u32 ring_datasize; /* < ring_size */
u32 ring_data_startoffset;
};

struct hv_ring_buffer_debug_info {
u32 current_interrupt_mask;
u32 current_read_index;
u32 current_write_index;
u32 bytes_avail_toread;
u32 bytes_avail_towrite;
};



/* Interface */

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