freebsd-dev/sys/fs/nfs/nfsdport.h
Rick Macklem 1f54e596ad Make the size of the hash tables used by the NFSv4 server tunable.
No appreciable change in performance was observed after increasing
the sizes of these tables and then testing with a single client.
However, there was an email that indicated high CPU overheads for
a heavily loaded NFSv4 and it is hoped that increasing the sizes
of the hash tables via these tunables might help.
The tables remain the same size by default.

Differential Revision:	https://reviews.freebsd.org/D2596
MFC after:	2 weeks
2015-05-27 22:00:05 +00:00

124 lines
5.0 KiB
C

/*-
* Copyright (c) 2009 Rick Macklem, University of Guelph
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* These macros handle nfsvattr fields. They look a bit silly here, but
* are quite different for the Darwin port.
*/
#define NFSVNO_ATTRINIT(n) (VATTR_NULL(&((n)->na_vattr)))
#define NFSVNO_SETATTRVAL(n, f, v) ((n)->na_##f = (v))
#define NFSVNO_SETACTIVE(n, f)
#define NFSVNO_UNSET(n, f) ((n)->na_##f = VNOVAL)
#define NFSVNO_NOTSETMODE(n) ((n)->na_mode == ((mode_t)VNOVAL))
#define NFSVNO_ISSETMODE(n) ((n)->na_mode != ((mode_t)VNOVAL))
#define NFSVNO_NOTSETUID(n) ((n)->na_uid == ((uid_t)VNOVAL))
#define NFSVNO_ISSETUID(n) ((n)->na_uid != ((uid_t)VNOVAL))
#define NFSVNO_NOTSETGID(n) ((n)->na_gid == ((gid_t)VNOVAL))
#define NFSVNO_ISSETGID(n) ((n)->na_gid != ((gid_t)VNOVAL))
#define NFSVNO_NOTSETSIZE(n) ((n)->na_size == VNOVAL)
#define NFSVNO_ISSETSIZE(n) ((n)->na_size != VNOVAL)
#define NFSVNO_NOTSETATIME(n) ((n)->na_atime.tv_sec == VNOVAL)
#define NFSVNO_ISSETATIME(n) ((n)->na_atime.tv_sec != VNOVAL)
#define NFSVNO_NOTSETMTIME(n) ((n)->na_mtime.tv_sec == VNOVAL)
#define NFSVNO_ISSETMTIME(n) ((n)->na_mtime.tv_sec != VNOVAL)
/*
* This structure acts as a "catch-all" for information that
* needs to be returned by nfsd_fhtovp().
*/
struct nfsexstuff {
int nes_exflag; /* export flags */
int nes_numsecflavor; /* # of security flavors */
int nes_secflavors[MAXSECFLAVORS]; /* and the flavors */
};
/*
* These are NO-OPS for BSD until Isilon upstreams EXITCODE support.
* EXITCODE is an in-memory ring buffer that holds the routines failing status.
* This is a valuable tool to use when debugging and analyzing issues.
* In addition to recording a routine's failing status, it offers
* logging of routines for call stack tracing.
* EXITCODE should be used only in routines that return a true errno value, as
* that value will be formatted to a displayable errno string. Routines that
* return regular int status that are not true errno should not set EXITCODE.
* If you want to log routine tracing, you can add EXITCODE(0) to any routine.
* NFS extended the EXITCODE with EXITCODE2 to record either the routine's
* exit errno status or the nd_repstat.
*/
#define NFSEXITCODE(error)
#define NFSEXITCODE2(error, nd)
#define NFSVNO_EXINIT(e) ((e)->nes_exflag = 0)
#define NFSVNO_EXPORTED(e) ((e)->nes_exflag & MNT_EXPORTED)
#define NFSVNO_EXRDONLY(e) ((e)->nes_exflag & MNT_EXRDONLY)
#define NFSVNO_EXPORTANON(e) ((e)->nes_exflag & MNT_EXPORTANON)
#define NFSVNO_EXSTRICTACCESS(e) ((e)->nes_exflag & MNT_EXSTRICTACCESS)
#define NFSVNO_EXV4ONLY(e) ((e)->nes_exflag & MNT_EXV4ONLY)
#define NFSVNO_SETEXRDONLY(e) ((e)->nes_exflag = (MNT_EXPORTED|MNT_EXRDONLY))
#define NFSVNO_CMPFH(f1, f2) \
((f1)->fh_fsid.val[0] == (f2)->fh_fsid.val[0] && \
(f1)->fh_fsid.val[1] == (f2)->fh_fsid.val[1] && \
bcmp(&(f1)->fh_fid, &(f2)->fh_fid, sizeof(struct fid)) == 0)
#define NFSLOCKHASH(f) \
(&nfslockhash[nfsrv_hashfh(f) % nfsrv_lockhashsize])
#define NFSFPVNODE(f) ((struct vnode *)((f)->f_data))
#define NFSFPCRED(f) ((f)->f_cred)
#define NFSFPFLAG(f) ((f)->f_flag)
#define NFSNAMEICNDSET(n, c, o, f) do { \
(n)->cn_cred = (c); \
(n)->cn_nameiop = (o); \
(n)->cn_flags = (f); \
} while (0)
/*
* A little bit of Darwin vfs kpi.
*/
#define vnode_mount(v) ((v)->v_mount)
#define vfs_statfs(m) (&((m)->mnt_stat))
#define NFSPATHLEN_T size_t
/*
* These are set to the minimum and maximum size of a server file
* handle.
*/
#define NFSRV_MINFH (sizeof (fhandle_t))
#define NFSRV_MAXFH (sizeof (fhandle_t))
/* Use this macro for debug printfs. */
#define NFSD_DEBUG(level, ...) do { \
if (nfsd_debuglevel >= (level)) \
printf(__VA_ARGS__); \
} while (0)