mirror of
https://github.com/torvalds/linux.git
synced 2024-11-13 23:51:39 +00:00
0fd97ccf45
Simplify the code a lot by killing the superflous struct se_subsystem_dev. Instead se_device is allocated early on by the backend driver, which allocates it as part of its own per-device structure, borrowing the scheme that is for example used for inode allocation. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#ifndef TARGET_CORE_RD_H
|
|
#define TARGET_CORE_RD_H
|
|
|
|
#define RD_HBA_VERSION "v4.0"
|
|
#define RD_MCP_VERSION "4.0"
|
|
|
|
/* Largest piece of memory kmalloc can allocate */
|
|
#define RD_MAX_ALLOCATION_SIZE 65536
|
|
#define RD_DEVICE_QUEUE_DEPTH 32
|
|
#define RD_MAX_DEVICE_QUEUE_DEPTH 128
|
|
#define RD_BLOCKSIZE 512
|
|
|
|
/* Used in target_core_init_configfs() for virtual LUN 0 access */
|
|
int __init rd_module_init(void);
|
|
void rd_module_exit(void);
|
|
|
|
struct rd_dev_sg_table {
|
|
u32 page_start_offset;
|
|
u32 page_end_offset;
|
|
u32 rd_sg_count;
|
|
struct scatterlist *sg_table;
|
|
} ____cacheline_aligned;
|
|
|
|
#define RDF_HAS_PAGE_COUNT 0x01
|
|
|
|
struct rd_dev {
|
|
struct se_device dev;
|
|
u32 rd_flags;
|
|
/* Unique Ramdisk Device ID in Ramdisk HBA */
|
|
u32 rd_dev_id;
|
|
/* Total page count for ramdisk device */
|
|
u32 rd_page_count;
|
|
/* Number of SG tables in sg_table_array */
|
|
u32 sg_table_count;
|
|
/* Array of rd_dev_sg_table_t containing scatterlists */
|
|
struct rd_dev_sg_table *sg_table_array;
|
|
/* Ramdisk HBA device is connected to */
|
|
struct rd_host *rd_host;
|
|
} ____cacheline_aligned;
|
|
|
|
struct rd_host {
|
|
u32 rd_host_dev_id_count;
|
|
u32 rd_host_id; /* Unique Ramdisk Host ID */
|
|
} ____cacheline_aligned;
|
|
|
|
#endif /* TARGET_CORE_RD_H */
|