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authorAndy Adamson <andros@netapp.com>2010-10-20 00:18:03 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-10-24 18:07:10 -0400
commitb1f69b754ee312ec75f2c7ead0e6851cd9598cc2 (patch)
tree1d8e70abb2cd087e3b97f73d86db8b9568467378 /include/linux/nfs_xdr.h
parent974cec8ca0352eb5d281535b714cf194a606e98f (diff)
downloadop-kernel-dev-b1f69b754ee312ec75f2c7ead0e6851cd9598cc2.zip
op-kernel-dev-b1f69b754ee312ec75f2c7ead0e6851cd9598cc2.tar.gz
NFSv4.1: pnfs: add LAYOUTGET and GETDEVICEINFO infrastructure
Add the ability to actually send LAYOUTGET and GETDEVICEINFO. This also adds in the machinery to handle layout state and the deviceid cache. Note that GETDEVICEINFO is not called directly by the generic layer. Instead it is called by the drivers while parsing the LAYOUTGET opaque data in response to an unknown device id embedded therein. RFC 5661 only encodes device ids within the driver-specific opaque data. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Dean Hildebrand <dhildebz@umich.edu> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/nfs_xdr.h')
-rw-r--r--include/linux/nfs_xdr.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 065f9d1..ba6cc8f 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -187,6 +187,55 @@ struct nfs4_get_lease_time_res {
struct nfs4_sequence_res lr_seq_res;
};
+#define PNFS_LAYOUT_MAXSIZE 4096
+
+struct nfs4_layoutdriver_data {
+ __u32 len;
+ void *buf;
+};
+
+struct pnfs_layout_range {
+ u32 iomode;
+ u64 offset;
+ u64 length;
+};
+
+struct nfs4_layoutget_args {
+ __u32 type;
+ struct pnfs_layout_range range;
+ __u64 minlength;
+ __u32 maxcount;
+ struct inode *inode;
+ struct nfs_open_context *ctx;
+ struct nfs4_sequence_args seq_args;
+};
+
+struct nfs4_layoutget_res {
+ __u32 return_on_close;
+ struct pnfs_layout_range range;
+ __u32 type;
+ nfs4_stateid stateid;
+ struct nfs4_layoutdriver_data layout;
+ struct nfs4_sequence_res seq_res;
+};
+
+struct nfs4_layoutget {
+ struct nfs4_layoutget_args args;
+ struct nfs4_layoutget_res res;
+ struct pnfs_layout_segment **lsegpp;
+ int status;
+};
+
+struct nfs4_getdeviceinfo_args {
+ struct pnfs_device *pdev;
+ struct nfs4_sequence_args seq_args;
+};
+
+struct nfs4_getdeviceinfo_res {
+ struct pnfs_device *pdev;
+ struct nfs4_sequence_res seq_res;
+};
+
/*
* Arguments to the open call.
*/
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