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freebsd-skq/sys/fs/nfs/nfs.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

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/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* $FreeBSD$
*/
#ifndef _NFS_NFS_H_
#define _NFS_NFS_H_
/*
* Tunable constants for nfs
*/
#define NFS_MAXIOVEC 34
#define NFS_TICKINTVL 500 /* Desired time for a tick (msec) */
#define NFS_HZ (hz / nfscl_ticks) /* Ticks/sec */
#define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */
#define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
#define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
#define NFS_TCPTIMEO 300 /* TCP timeout */
#define NFS_MAXRCVTIMEO 60 /* 1 minute in seconds */
#define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
#define NFS_MAXREXMIT 100 /* Stop counting after this many */
#define NFSV4_CALLBACKTIMEO (2 * NFS_HZ) /* Timeout in ticks */
#define NFSV4_CALLBACKRETRY 5 /* Number of retries before failure */
#define NFSV4_SLOTS 64 /* Number of slots, fore channel */
#define NFSV4_CBSLOTS 8 /* Number of slots, back channel */
#define NFSV4_CBRETRYCNT 4 /* # of CBRecall retries upon err */
#define NFSV4_UPCALLTIMEO (15 * NFS_HZ) /* Timeout in ticks for upcalls */
/* to gssd or nfsuserd */
#define NFSV4_UPCALLRETRY 4 /* Number of retries before failure */
#define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */
#define NFS_RETRANS 10 /* Num of retrans for soft mounts */
#define NFS_RETRANS_TCP 2 /* Num of retrans for TCP soft mounts */
#define NFS_MAXGRPS 16 /* Max. size of groups list */
#define NFS_TRYLATERDEL 15 /* Maximum delay timeout (sec) */
#ifndef NFS_REMOVETIMEO
#define NFS_REMOVETIMEO 15 /* # sec to wait for delegret in local syscall */
#endif
#ifndef NFS_MINATTRTIMO
#define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
#endif
#ifndef NFS_MAXATTRTIMO
#define NFS_MAXATTRTIMO 60
#endif
#define NFS_WSIZE 8192 /* Def. write data size <= 8192 */
#define NFS_RSIZE 8192 /* Def. read data size <= 8192 */
#define NFS_READDIRSIZE 8192 /* Def. readdir size */
#define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */
#define NFS_MAXRAHEAD 16 /* Max. read ahead # blocks */
#define NFS_MAXASYNCDAEMON 64 /* Max. number async_daemons runnable */
#define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */
#ifndef NFSRV_LEASE
#define NFSRV_LEASE 120 /* Lease time in seconds for V4 */
#endif /* assigned to nfsrv_lease */
#ifndef NFSRV_STALELEASE
#define NFSRV_STALELEASE (5 * nfsrv_lease)
#endif
#ifndef NFSRV_MOULDYLEASE
#define NFSRV_MOULDYLEASE 604800 /* One week (in sec) */
#endif
#ifndef NFSCLIENTHASHSIZE
#define NFSCLIENTHASHSIZE 20 /* Size of server client hash table */
#endif
#ifndef NFSLOCKHASHSIZE
#define NFSLOCKHASHSIZE 20 /* Size of server nfslock hash table */
#endif
#ifndef NFSSESSIONHASHSIZE
#define NFSSESSIONHASHSIZE 20 /* Size of server session hash table */
#endif
#define NFSSTATEHASHSIZE 10 /* Size of server stateid hash table */
#ifndef NFSUSERHASHSIZE
#define NFSUSERHASHSIZE 30 /* Size of user id hash table */
#endif
#ifndef NFSGROUPHASHSIZE
#define NFSGROUPHASHSIZE 5 /* Size of group id hash table */
#endif
#ifndef NFSCLDELEGHIGHWATER
#define NFSCLDELEGHIGHWATER 10000 /* limit for client delegations */
#endif
#ifndef NFSCLLAYOUTHIGHWATER
#define NFSCLLAYOUTHIGHWATER 10000 /* limit for client pNFS layouts */
#endif
#ifndef NFSNOOPEN /* Inactive open owner (sec) */
#define NFSNOOPEN 120
#endif
#define NFSRV_LEASEDELTA 15 /* # of seconds to delay beyond lease */
#define NFS_IDMAXSIZE 4 /* max sizeof (in_addr_t) */
#ifndef NFSRVCACHE_UDPTIMEOUT
#define NFSRVCACHE_UDPTIMEOUT 30 /* # of sec to hold cached rpcs(udp) */
#endif
#ifndef NFSRVCACHE_UDPHIGHWATER
#define NFSRVCACHE_UDPHIGHWATER 500 /* Max # of udp cache entries */
#endif
#ifndef NFSRVCACHE_TCPTIMEOUT
#define NFSRVCACHE_TCPTIMEOUT (3600*12) /*#of sec to hold cached rpcs(tcp) */
#endif
#ifndef NFSRVCACHE_FLOODLEVEL
#define NFSRVCACHE_FLOODLEVEL 16384 /* Very high water mark for cache */
#endif
#ifndef NFSRV_CLIENTHIGHWATER
#define NFSRV_CLIENTHIGHWATER 1000
#endif
#ifndef NFSRV_MAXDUMPLIST
#define NFSRV_MAXDUMPLIST 10000
#endif
#ifndef NFS_ACCESSCACHESIZE
#define NFS_ACCESSCACHESIZE 8
#endif
#define NFSV4_CBPORT 7745 /* Callback port for testing */
/*
* This macro defines the high water mark for issuing V4 delegations.
* (It is currently set at a conservative 20% of nfsrv_v4statelimit. This
* may want to increase when clients can make more effective use of
* delegations.)
*/
#define NFSRV_V4DELEGLIMIT(c) (((c) * 5) > nfsrv_v4statelimit)
#define NFS_READDIRBLKSIZ DIRBLKSIZ /* Minimal nm_readdirsize */
/*
* Oddballs
*/
#define NFS_CMPFH(n, f, s) \
((n)->n_fhp->nfh_len == (s) && !NFSBCMP((n)->n_fhp->nfh_fh, (caddr_t)(f), (s)))
#define NFSRV_CMPFH(nf, ns, f, s) \
((ns) == (s) && !NFSBCMP((caddr_t)(nf), (caddr_t)(f), (s)))
#define NFS_CMPTIME(t1, t2) \
((t1).tv_sec == (t2).tv_sec && (t1).tv_nsec == (t2).tv_nsec)
#define NFS_SETTIME(t) do { \
(t).tv_sec = time.tv_sec; (t).tv_nsec = 1000 * time.tv_usec; } while (0)
#define NFS_SRVMAXDATA(n) \
(((n)->nd_flag & (ND_NFSV3 | ND_NFSV4)) ? \
NFS_SRVMAXIO : NFS_V2MAXDATA)
#define NFS64BITSSET 0xffffffffffffffffull
#define NFS64BITSMINUS1 0xfffffffffffffffeull
/*
* Structures for the nfssvc(2) syscall. Not that anyone but nfsd, mount_nfs
* and nfsloaduser should ever try and use it.
*/
struct nfsd_addsock_args {
int sock; /* Socket to serve */
caddr_t name; /* Client addr for connection based sockets */
int namelen; /* Length of name */
};
/*
* nfsd argument for new krpc.
*/
struct nfsd_nfsd_args {
const char *principal; /* GSS-API service principal name */
int minthreads; /* minimum service thread count */
int maxthreads; /* maximum service thread count */
};
/*
* Arguments for use by the callback daemon.
*/
struct nfsd_nfscbd_args {
const char *principal; /* GSS-API service principal name */
};
struct nfscbd_args {
int sock; /* Socket to serve */
caddr_t name; /* Client addr for connection based sockets */
int namelen; /* Length of name */
u_short port; /* Port# for callbacks */
};
struct nfsd_idargs {
int nid_flag; /* Flags (see below) */
uid_t nid_uid; /* user/group id */
gid_t nid_gid;
int nid_usermax; /* Upper bound on user name cache */
int nid_usertimeout;/* User name timeout (minutes) */
u_char *nid_name; /* Name */
int nid_namelen; /* and its length */
};
struct nfsd_clid {
int nclid_idlen; /* Length of client id */
u_char nclid_id[NFSV4_OPAQUELIMIT]; /* and name */
};
struct nfsd_dumplist {
int ndl_size; /* Number of elements */
void *ndl_list; /* and the list of elements */
};
struct nfsd_dumpclients {
u_int32_t ndcl_flags; /* LCL_xxx flags */
u_int32_t ndcl_nopenowners; /* Number of openowners */
u_int32_t ndcl_nopens; /* and opens */
u_int32_t ndcl_nlockowners; /* and of lockowners */
u_int32_t ndcl_nlocks; /* and of locks */
u_int32_t ndcl_ndelegs; /* and of delegations */
u_int32_t ndcl_nolddelegs; /* and old delegations */
sa_family_t ndcl_addrfam; /* Callback address */
union {
struct in_addr sin_addr;
struct in6_addr sin6_addr;
} ndcl_cbaddr;
struct nfsd_clid ndcl_clid; /* and client id */
};
struct nfsd_dumplocklist {
char *ndllck_fname; /* File Name */
int ndllck_size; /* Number of elements */
void *ndllck_list; /* and the list of elements */
};
struct nfsd_dumplocks {
u_int32_t ndlck_flags; /* state flags NFSLCK_xxx */
nfsv4stateid_t ndlck_stateid; /* stateid */
u_int64_t ndlck_first; /* lock byte range */
u_int64_t ndlck_end;
struct nfsd_clid ndlck_owner; /* Owner of open/lock */
sa_family_t ndlck_addrfam; /* Callback address */
union {
struct in_addr sin_addr;
struct in6_addr sin6_addr;
} ndlck_cbaddr;
struct nfsd_clid ndlck_clid; /* and client id */
};
/*
* Structure for referral information.
*/
struct nfsreferral {
u_char *nfr_srvlist; /* List of servers */
int nfr_srvcnt; /* number of servers */
vnode_t nfr_vp; /* vnode for referral */
u_int32_t nfr_dfileno; /* assigned dir inode# */
};
/*
* Flags for lc_flags and opsflags for nfsrv_getclient().
*/
#define LCL_NEEDSCONFIRM 0x00000001
#define LCL_DONTCLEAN 0x00000002
#define LCL_WAKEUPWANTED 0x00000004
#define LCL_TCPCALLBACK 0x00000008
#define LCL_CALLBACKSON 0x00000010
#define LCL_INDEXNOTOK 0x00000020
#define LCL_STAMPEDSTABLE 0x00000040
#define LCL_EXPIREIT 0x00000080
#define LCL_CBDOWN 0x00000100
#define LCL_KERBV 0x00000400
#define LCL_NAME 0x00000800
#define LCL_NEEDSCBNULL 0x00001000
#define LCL_GSSINTEGRITY 0x00002000
#define LCL_GSSPRIVACY 0x00004000
#define LCL_ADMINREVOKED 0x00008000
#define LCL_RECLAIMCOMPLETE 0x00010000
#define LCL_NFSV41 0x00020000
#define LCL_GSS LCL_KERBV /* Or of all mechs */
/*
* Bits for flags in nfslock and nfsstate.
* The access, deny, NFSLCK_READ and NFSLCK_WRITE bits must be defined as
* below, in the correct order, so the shifts work for tests.
*/
#define NFSLCK_READACCESS 0x00000001
#define NFSLCK_WRITEACCESS 0x00000002
#define NFSLCK_ACCESSBITS (NFSLCK_READACCESS | NFSLCK_WRITEACCESS)
#define NFSLCK_SHIFT 2
#define NFSLCK_READDENY 0x00000004
#define NFSLCK_WRITEDENY 0x00000008
#define NFSLCK_DENYBITS (NFSLCK_READDENY | NFSLCK_WRITEDENY)
#define NFSLCK_SHAREBITS \
(NFSLCK_READACCESS|NFSLCK_WRITEACCESS|NFSLCK_READDENY|NFSLCK_WRITEDENY)
#define NFSLCK_LOCKSHIFT 4
#define NFSLCK_READ 0x00000010
#define NFSLCK_WRITE 0x00000020
#define NFSLCK_BLOCKING 0x00000040
#define NFSLCK_RECLAIM 0x00000080
#define NFSLCK_OPENTOLOCK 0x00000100
#define NFSLCK_TEST 0x00000200
#define NFSLCK_LOCK 0x00000400
#define NFSLCK_UNLOCK 0x00000800
#define NFSLCK_OPEN 0x00001000
#define NFSLCK_CLOSE 0x00002000
#define NFSLCK_CHECK 0x00004000
#define NFSLCK_RELEASE 0x00008000
#define NFSLCK_NEEDSCONFIRM 0x00010000
#define NFSLCK_CONFIRM 0x00020000
#define NFSLCK_DOWNGRADE 0x00040000
#define NFSLCK_DELEGREAD 0x00080000
#define NFSLCK_DELEGWRITE 0x00100000
#define NFSLCK_DELEGCUR 0x00200000
#define NFSLCK_DELEGPREV 0x00400000
#define NFSLCK_OLDDELEG 0x00800000
#define NFSLCK_DELEGRECALL 0x01000000
#define NFSLCK_SETATTR 0x02000000
#define NFSLCK_DELEGPURGE 0x04000000
#define NFSLCK_DELEGRETURN 0x08000000
#define NFSLCK_WANTWDELEG 0x10000000
#define NFSLCK_WANTRDELEG 0x20000000
#define NFSLCK_WANTNODELEG 0x40000000
#define NFSLCK_WANTBITS \
(NFSLCK_WANTWDELEG | NFSLCK_WANTRDELEG | NFSLCK_WANTNODELEG)
/* And bits for nid_flag */
#define NFSID_INITIALIZE 0x0001
#define NFSID_ADDUID 0x0002
#define NFSID_DELUID 0x0004
#define NFSID_ADDUSERNAME 0x0008
#define NFSID_DELUSERNAME 0x0010
#define NFSID_ADDGID 0x0020
#define NFSID_DELGID 0x0040
#define NFSID_ADDGROUPNAME 0x0080
#define NFSID_DELGROUPNAME 0x0100
/*
* fs.nfs sysctl(3) identifiers
*/
#define NFS_NFSSTATS 1 /* struct: struct nfsstats */
/*
* Here is the definition of the attribute bits array and macros that
* manipulate it.
* THE MACROS MUST BE MANUALLY MODIFIED IF NFSATTRBIT_MAXWORDS CHANGES!!
* It is (NFSATTRBIT_MAX + 31) / 32.
*/
#define NFSATTRBIT_MAXWORDS 3
typedef struct {
u_int32_t bits[NFSATTRBIT_MAXWORDS];
} nfsattrbit_t;
#define NFSZERO_ATTRBIT(b) do { \
(b)->bits[0] = 0; \
(b)->bits[1] = 0; \
(b)->bits[2] = 0; \
} while (0)
#define NFSSET_ATTRBIT(t, f) do { \
(t)->bits[0] = (f)->bits[0]; \
(t)->bits[1] = (f)->bits[1]; \
(t)->bits[2] = (f)->bits[2]; \
} while (0)
#define NFSSETSUPP_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_SUPP0; \
(b)->bits[1] = (NFSATTRBIT_SUPP1 | NFSATTRBIT_SUPPSETONLY); \
(b)->bits[2] = NFSATTRBIT_SUPP2; \
} while (0)
#define NFSISSET_ATTRBIT(b, p) ((b)->bits[(p) / 32] & (1 << ((p) % 32)))
#define NFSSETBIT_ATTRBIT(b, p) ((b)->bits[(p) / 32] |= (1 << ((p) % 32)))
#define NFSCLRBIT_ATTRBIT(b, p) ((b)->bits[(p) / 32] &= ~(1 << ((p) % 32)))
#define NFSCLRALL_ATTRBIT(b, a) do { \
(b)->bits[0] &= ~((a)->bits[0]); \
(b)->bits[1] &= ~((a)->bits[1]); \
(b)->bits[2] &= ~((a)->bits[2]); \
} while (0)
#define NFSCLRNOT_ATTRBIT(b, a) do { \
(b)->bits[0] &= ((a)->bits[0]); \
(b)->bits[1] &= ((a)->bits[1]); \
(b)->bits[2] &= ((a)->bits[2]); \
} while (0)
#define NFSCLRNOTFILLABLE_ATTRBIT(b) do { \
(b)->bits[0] &= NFSATTRBIT_SUPP0; \
(b)->bits[1] &= NFSATTRBIT_SUPP1; \
(b)->bits[2] &= NFSATTRBIT_SUPP2; \
} while (0)
#define NFSCLRNOTSETABLE_ATTRBIT(b) do { \
(b)->bits[0] &= NFSATTRBIT_SETABLE0; \
(b)->bits[1] &= NFSATTRBIT_SETABLE1; \
(b)->bits[2] &= NFSATTRBIT_SETABLE2; \
} while (0)
#define NFSNONZERO_ATTRBIT(b) ((b)->bits[0] || (b)->bits[1] || (b)->bits[2])
#define NFSEQUAL_ATTRBIT(b, p) ((b)->bits[0] == (p)->bits[0] && \
(b)->bits[1] == (p)->bits[1] && (b)->bits[2] == (p)->bits[2])
#define NFSGETATTR_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_GETATTR0; \
(b)->bits[1] = NFSATTRBIT_GETATTR1; \
(b)->bits[2] = NFSATTRBIT_GETATTR2; \
} while (0)
#define NFSWCCATTR_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_WCCATTR0; \
(b)->bits[1] = NFSATTRBIT_WCCATTR1; \
(b)->bits[2] = NFSATTRBIT_WCCATTR2; \
} while (0)
#define NFSWRITEGETATTR_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_WRITEGETATTR0; \
(b)->bits[1] = NFSATTRBIT_WRITEGETATTR1; \
(b)->bits[2] = NFSATTRBIT_WRITEGETATTR2; \
} while (0)
#define NFSCBGETATTR_ATTRBIT(b, c) do { \
(c)->bits[0] = ((b)->bits[0] & NFSATTRBIT_CBGETATTR0); \
(c)->bits[1] = ((b)->bits[1] & NFSATTRBIT_CBGETATTR1); \
(c)->bits[2] = ((b)->bits[2] & NFSATTRBIT_CBGETATTR2); \
} while (0)
#define NFSPATHCONF_GETATTRBIT(b) do { \
(b)->bits[0] = NFSGETATTRBIT_PATHCONF0; \
(b)->bits[1] = NFSGETATTRBIT_PATHCONF1; \
(b)->bits[2] = NFSGETATTRBIT_PATHCONF2; \
} while (0)
#define NFSSTATFS_GETATTRBIT(b) do { \
(b)->bits[0] = NFSGETATTRBIT_STATFS0; \
(b)->bits[1] = NFSGETATTRBIT_STATFS1; \
(b)->bits[2] = NFSGETATTRBIT_STATFS2; \
} while (0)
#define NFSISSETSTATFS_ATTRBIT(b) \
(((b)->bits[0] & NFSATTRBIT_STATFS0) || \
((b)->bits[1] & NFSATTRBIT_STATFS1) || \
((b)->bits[2] & NFSATTRBIT_STATFS2))
#define NFSCLRSTATFS_ATTRBIT(b) do { \
(b)->bits[0] &= ~NFSATTRBIT_STATFS0; \
(b)->bits[1] &= ~NFSATTRBIT_STATFS1; \
(b)->bits[2] &= ~NFSATTRBIT_STATFS2; \
} while (0)
#define NFSREADDIRPLUS_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_READDIRPLUS0; \
(b)->bits[1] = NFSATTRBIT_READDIRPLUS1; \
(b)->bits[2] = NFSATTRBIT_READDIRPLUS2; \
} while (0)
#define NFSREFERRAL_ATTRBIT(b) do { \
(b)->bits[0] = NFSATTRBIT_REFERRAL0; \
(b)->bits[1] = NFSATTRBIT_REFERRAL1; \
(b)->bits[2] = NFSATTRBIT_REFERRAL2; \
} while (0)
/*
* Store uid, gid creds that were used when the stateid was acquired.
* The RPC layer allows NFS_MAXGRPS + 1 groups to go out on the wire,
* so that's how many gets stored here.
*/
struct nfscred {
uid_t nfsc_uid;
gid_t nfsc_groups[NFS_MAXGRPS + 1];
int nfsc_ngroups;
};
/*
* Constants that define the file handle for the V4 root directory.
* (The FSID must never be used by other file systems that are exported.)
*/
#define NFSV4ROOT_FSID0 ((int32_t) -1)
#define NFSV4ROOT_FSID1 ((int32_t) -1)
#define NFSV4ROOT_REFERRAL ((int32_t) -2)
#define NFSV4ROOT_INO 2 /* It's traditional */
#define NFSV4ROOT_GEN 1
/*
* The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
* What should be in this set is open to debate, but I believe that since
* I/O system calls on ufs are never interrupted by signals the set should
* be minimal. My reasoning is that many current programs that use signals
* such as SIGALRM will not expect file I/O system calls to be interrupted
* by them and break.
*/
#if defined(_KERNEL) || defined(KERNEL)
struct uio; struct buf; struct vattr; struct nameidata; /* XXX */
/*
* Socket errors ignored for connectionless sockets?
* For now, ignore them all
*/
#define NFSIGNORE_SOERROR(s, e) \
((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
((s) & PR_CONNREQUIRED) == 0)
/*
* This structure holds socket information for a connection. Used by the
* client and the server for callbacks.
*/
struct nfssockreq {
NFSSOCKADDR_T nr_nam;
int nr_sotype;
int nr_soproto;
int nr_soflags;
struct ucred *nr_cred;
int nr_lock;
NFSMUTEX_T nr_mtx;
u_int32_t nr_prog;
u_int32_t nr_vers;
struct __rpc_client *nr_client;
AUTH *nr_auth;
};
/*
* And associated nr_lock bits.
*/
#define NFSR_SNDLOCK 0x01
#define NFSR_WANTSND 0x02
#define NFSR_RCVLOCK 0x04
#define NFSR_WANTRCV 0x08
#define NFSR_RESERVEDPORT 0x10
#define NFSR_LOCALHOST 0x20
/*
* Queue head for nfsreq's
*/
TAILQ_HEAD(nfsreqhead, nfsreq);
/* This is the only nfsreq R_xxx flag still used. */
#define R_DONTRECOVER 0x00000100 /* don't initiate recovery when this
rpc gets a stale state reply */
/*
* Network address hash list element
*/
union nethostaddr {
struct in_addr had_inet;
struct in6_addr had_inet6;
};
/*
* Structure of list of mechanisms.
*/
struct nfsgss_mechlist {
int len;
const u_char *str;
int totlen;
};
#define KERBV_MECH 0 /* position in list */
/*
* This structure is used by the server for describing each request.
*/
struct nfsrv_descript {
mbuf_t nd_mrep; /* Request mbuf list */
mbuf_t nd_md; /* Current dissect mbuf */
mbuf_t nd_mreq; /* Reply mbuf list */
mbuf_t nd_mb; /* Current build mbuf */
NFSSOCKADDR_T nd_nam; /* and socket addr */
NFSSOCKADDR_T nd_nam2; /* return socket addr */
caddr_t nd_dpos; /* Current dissect pos */
caddr_t nd_bpos; /* Current build pos */
u_int16_t nd_procnum; /* RPC # */
u_int32_t nd_flag; /* nd_flag */
u_int32_t nd_repstat; /* Reply status */
int *nd_errp; /* Pointer to ret status */
u_int32_t nd_retxid; /* Reply xid */
struct nfsrvcache *nd_rp; /* Assoc. cache entry */
fhandle_t nd_fh; /* File handle */
struct ucred *nd_cred; /* Credentials */
uid_t nd_saveduid; /* Saved uid */
u_int64_t nd_sockref; /* Rcv socket ref# */
u_int64_t nd_compref; /* Compound RPC ref# */
time_t nd_tcpconntime; /* Time TCP connection est. */
nfsquad_t nd_clientid; /* Implied clientid */
int nd_gssnamelen; /* principal name length */
char *nd_gssname; /* principal name */
uint32_t *nd_slotseq; /* ptr to slot seq# in req */
uint8_t nd_sessionid[NFSX_V4SESSIONID]; /* Session id */
uint32_t nd_slotid; /* Slotid for this RPC */
SVCXPRT *nd_xprt; /* Server RPC handle */
};
#define nd_princlen nd_gssnamelen
#define nd_principal nd_gssname
/* Bits for "nd_flag" */
#define ND_DONTSAVEREPLY 0x00000001
#define ND_SAVEREPLY 0x00000002
#define ND_NFSV2 0x00000004
#define ND_NFSV3 0x00000008
#define ND_NFSV4 0x00000010
#define ND_KERBV 0x00000020
#define ND_GSSINTEGRITY 0x00000040
#define ND_GSSPRIVACY 0x00000080
#define ND_WINDOWVERF 0x00000100
#define ND_GSSINITREPLY 0x00000200
#define ND_STREAMSOCK 0x00000400
#define ND_PUBLOOKUP 0x00000800
#define ND_USEGSSNAME 0x00001000
#define ND_SAMETCPCONN 0x00002000
#define ND_IMPLIEDCLID 0x00004000
#define ND_NOMOREDATA 0x00008000
#define ND_V4WCCATTR 0x00010000
#define ND_NFSCB 0x00020000
#define ND_AUTHNONE 0x00040000
#define ND_EXAUTHSYS 0x00080000
#define ND_EXGSS 0x00100000
#define ND_EXGSSINTEGRITY 0x00200000
#define ND_EXGSSPRIVACY 0x00400000
#define ND_INCRSEQID 0x00800000
#define ND_NFSCL 0x01000000
#define ND_NFSV41 0x02000000
#define ND_HASSEQUENCE 0x04000000
#define ND_CACHETHIS 0x08000000
#define ND_LASTOP 0x10000000
/*
* ND_GSS should be the "or" of all GSS type authentications.
*/
#define ND_GSS (ND_KERBV)
struct nfsv4_opflag {
int retfh;
int needscfh;
int savereply;
int modifyfs;
int lktype;
int needsseq;
};
/*
* Flags used to indicate what to do w.r.t. seqid checking.
*/
#define NFSRVSEQID_FIRST 0x01
#define NFSRVSEQID_LAST 0x02
#define NFSRVSEQID_OPEN 0x04
/*
* assign a doubly linked list to a new head
* and prepend one list into another.
*/
#define LIST_NEWHEAD(nhead, ohead, field) do { \
if (((nhead)->lh_first = (ohead)->lh_first) != NULL) \
(ohead)->lh_first->field.le_prev = &(nhead)->lh_first; \
(ohead)->lh_first = NULL; \
} while (0)
#define LIST_PREPEND(head, phead, lelm, field) do { \
if ((head)->lh_first != NULL) { \
(lelm)->field.le_next = (head)->lh_first; \
(lelm)->field.le_next->field.le_prev = \
&(lelm)->field.le_next; \
} \
(head)->lh_first = (phead)->lh_first; \
(head)->lh_first->field.le_prev = &(head)->lh_first; \
} while (0)
/*
* File handle structure for client. Malloc'd to the correct length with
* malloc type M_NFSFH.
*/
struct nfsfh {
u_int16_t nfh_len; /* Length of file handle */
u_int8_t nfh_fh[1]; /* and the file handle */
};
/*
* File handle structure for server. The NFSRV_MAXFH constant is
* set in nfsdport.h. I use a 32bit length, so that alignment is
* preserved.
*/
struct nfsrvfh {
u_int32_t nfsrvfh_len;
u_int8_t nfsrvfh_data[NFSRV_MAXFH];
};
/*
* This structure is used for sleep locks on the NFSv4 nfsd threads and
* NFSv4 client data structures.
*/
struct nfsv4lock {
u_int32_t nfslock_usecnt;
u_int8_t nfslock_lock;
};
#define NFSV4LOCK_LOCK 0x01
#define NFSV4LOCK_LOCKWANTED 0x02
#define NFSV4LOCK_WANTED 0x04
/*
* Values for the override argument for nfsvno_accchk().
*/
#define NFSACCCHK_NOOVERRIDE 0
#define NFSACCCHK_ALLOWROOT 1
#define NFSACCCHK_ALLOWOWNER 2
/*
* and values for the vpislocked argument for nfsvno_accchk().
*/
#define NFSACCCHK_VPNOTLOCKED 0
#define NFSACCCHK_VPISLOCKED 1
/*
* Slot for the NFSv4.1 Sequence Op.
*/
struct nfsslot {
int nfssl_inprog;
uint32_t nfssl_seq;
struct mbuf *nfssl_reply;
};
#endif /* _KERNEL */
#endif /* _NFS_NFS_H */
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