summaryrefslogtreecommitdiffstats
path: root/fs/nfsd/blocklayoutxdr.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nfsd/blocklayoutxdr.h')
-rw-r--r--fs/nfsd/blocklayoutxdr.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/fs/nfsd/blocklayoutxdr.h b/fs/nfsd/blocklayoutxdr.h
new file mode 100644
index 000000000..bc5166bfe
--- /dev/null
+++ b/fs/nfsd/blocklayoutxdr.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _NFSD_BLOCKLAYOUTXDR_H
+#define _NFSD_BLOCKLAYOUTXDR_H 1
+
+#include <linux/blkdev.h>
+#include "xdr4.h"
+
+struct iomap;
+struct xdr_stream;
+
+struct pnfs_block_extent {
+ struct nfsd4_deviceid vol_id;
+ u64 foff;
+ u64 len;
+ u64 soff;
+ enum pnfs_block_extent_state es;
+};
+
+struct pnfs_block_range {
+ u64 foff;
+ u64 len;
+};
+
+/*
+ * Random upper cap for the uuid length to avoid unbounded allocation.
+ * Not actually limited by the protocol.
+ */
+#define PNFS_BLOCK_UUID_LEN 128
+
+struct pnfs_block_volume {
+ enum pnfs_block_volume_type type;
+ union {
+ struct {
+ u64 offset;
+ u32 sig_len;
+ u8 sig[PNFS_BLOCK_UUID_LEN];
+ } simple;
+ struct {
+ enum scsi_code_set code_set;
+ enum scsi_designator_type designator_type;
+ int designator_len;
+ u8 designator[256];
+ u64 pr_key;
+ } scsi;
+ };
+};
+
+struct pnfs_block_deviceaddr {
+ u32 nr_volumes;
+ struct pnfs_block_volume volumes[];
+};
+
+__be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr,
+ struct nfsd4_getdeviceinfo *gdp);
+__be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr,
+ struct nfsd4_layoutget *lgp);
+int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp,
+ u32 block_size);
+int nfsd4_scsi_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp,
+ u32 block_size);
+
+#endif /* _NFSD_BLOCKLAYOUTXDR_H */