Commit | Line | Data |
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b2aaee33 ML |
1 | typedef struct scsi_request Scsi_Request; |
2 | ||
3 | static Scsi_Request *dummy_cmdp; /* only used for sizeof */ | |
4 | ||
5 | typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */ | |
6 | unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */ | |
7 | unsigned short sglist_len; /* size of malloc'd scatter-gather list ++ */ | |
8 | unsigned bufflen; /* Size of (aggregate) data buffer */ | |
9 | unsigned b_malloc_len; /* actual len malloc'ed in buffer */ | |
10 | void *buffer; /* Data buffer or scatter list (k_use_sg>0) */ | |
11 | char dio_in_use; /* 0->indirect IO (or mmap), 1->dio */ | |
12 | unsigned char cmd_opcode; /* first byte of command */ | |
13 | } Sg_scatter_hold; | |
14 | ||
15 | typedef struct sg_request { /* SG_MAX_QUEUE requests outstanding per file */ | |
16 | Scsi_Request *my_cmdp; /* != 0 when request with lower levels */ | |
17 | struct sg_request *nextrp; /* NULL -> tail request (slist) */ | |
18 | struct sg_fd *parentfp; /* NULL -> not in use */ | |
19 | Sg_scatter_hold data; /* hold buffer, perhaps scatter list */ | |
20 | sg_io_hdr_t header; /* scsi command+info, see <scsi/sg.h> */ | |
21 | unsigned char sense_b[sizeof (dummy_cmdp->sr_sense_buffer)]; | |
22 | char res_used; /* 1 -> using reserve buffer, 0 -> not ... */ | |
23 | char orphan; /* 1 -> drop on sight, 0 -> normal */ | |
24 | char sg_io_owned; /* 1 -> packet belongs to SG_IO */ | |
25 | volatile char done; /* 0->before bh, 1->before read, 2->read */ | |
26 | } Sg_request; |