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8650b8a0 CH |
1 | #ifndef _NFSD_BLOCKLAYOUTXDR_H |
2 | #define _NFSD_BLOCKLAYOUTXDR_H 1 | |
3 | ||
4 | #include <linux/blkdev.h> | |
5 | #include "xdr4.h" | |
6 | ||
7 | struct iomap; | |
8 | struct xdr_stream; | |
9 | ||
8650b8a0 CH |
10 | struct pnfs_block_extent { |
11 | struct nfsd4_deviceid vol_id; | |
12 | u64 foff; | |
13 | u64 len; | |
14 | u64 soff; | |
15 | enum pnfs_block_extent_state es; | |
16 | }; | |
8650b8a0 CH |
17 | |
18 | /* | |
19 | * Random upper cap for the uuid length to avoid unbounded allocation. | |
20 | * Not actually limited by the protocol. | |
21 | */ | |
22 | #define PNFS_BLOCK_UUID_LEN 128 | |
23 | ||
24 | struct pnfs_block_volume { | |
25 | enum pnfs_block_volume_type type; | |
26 | union { | |
27 | struct { | |
28 | u64 offset; | |
29 | u32 sig_len; | |
30 | u8 sig[PNFS_BLOCK_UUID_LEN]; | |
31 | } simple; | |
32 | }; | |
33 | }; | |
34 | ||
35 | struct pnfs_block_deviceaddr { | |
36 | u32 nr_volumes; | |
37 | struct pnfs_block_volume volumes[]; | |
38 | }; | |
39 | ||
40 | __be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, | |
41 | struct nfsd4_getdeviceinfo *gdp); | |
42 | __be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr, | |
43 | struct nfsd4_layoutget *lgp); | |
44 | int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp, | |
45 | u32 block_size); | |
46 | ||
47 | #endif /* _NFSD_BLOCKLAYOUTXDR_H */ |