| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/linux/nfsd/const.h |
| 3 | * |
| 4 | * Various constants related to NFS. |
| 5 | * |
| 6 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
| 7 | */ |
| 8 | |
| 9 | #ifndef _LINUX_NFSD_CONST_H |
| 10 | #define _LINUX_NFSD_CONST_H |
| 11 | |
| 12 | #include <linux/nfs.h> |
| 13 | #include <linux/nfs2.h> |
| 14 | #include <linux/nfs3.h> |
| 15 | #include <linux/nfs4.h> |
| 16 | |
| 17 | /* |
| 18 | * Maximum protocol version supported by knfsd |
| 19 | */ |
| 20 | #define NFSSVC_MAXVERS 3 |
| 21 | |
| 22 | /* |
| NeilBrown | 596bbe5 | 2006-10-04 02:15:48 -0700 | [diff] [blame] | 23 | * Maximum blocksizes supported by daemon under various circumstances. |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
| NeilBrown | 596bbe5 | 2006-10-04 02:15:48 -0700 | [diff] [blame] | 25 | #define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD |
| Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 26 | /* NFSv2 is limited by the protocol specification, see RFC 1094 */ |
| 27 | #define NFSSVC_MAXBLKSIZE_V2 (8*1024) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | #ifdef __KERNEL__ |
| 30 | |
| Cedric Le Goater | f7aa263 | 2006-10-04 02:16:21 -0700 | [diff] [blame^] | 31 | #include <linux/sunrpc/msg_prot.h> |
| 32 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #ifndef NFS_SUPER_MAGIC |
| 34 | # define NFS_SUPER_MAGIC 0x6969 |
| 35 | #endif |
| 36 | |
| Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 37 | /* |
| 38 | * Largest number of bytes we need to allocate for an NFS |
| 39 | * call or reply. Used to control buffer sizes. We use |
| 40 | * the length of v3 WRITE, READDIR and READDIR replies |
| 41 | * which are an RPC header, up to 26 XDR units of reply |
| 42 | * data, and some page data. |
| 43 | * |
| 44 | * Note that accuracy here doesn't matter too much as the |
| 45 | * size is rounded up to a page size when allocating space. |
| 46 | */ |
| 47 | #define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #ifdef CONFIG_NFSD_V4 |
| 50 | # define NFSSVC_XDRSIZE NFS4_SVC_XDRSIZE |
| 51 | #elif defined(CONFIG_NFSD_V3) |
| 52 | # define NFSSVC_XDRSIZE NFS3_SVC_XDRSIZE |
| 53 | #else |
| 54 | # define NFSSVC_XDRSIZE NFS2_SVC_XDRSIZE |
| 55 | #endif |
| 56 | |
| 57 | #endif /* __KERNEL__ */ |
| 58 | |
| 59 | #endif /* _LINUX_NFSD_CONST_H */ |