--- /dev/null
+
+Kernel NFS Server Statistics
+============================
+
+This document describes the format and semantics of the statistics
+which the kernel NFS server makes available to userspace. These
+statistics are available in several text form pseudo files, each of
+which is described separately below.
+
+In most cases you don't need to know these formats, as the nfsstat(8)
+program from the nfs-utils distribution provides a helpful command-line
+interface for extracting and printing them.
+
+All the files described here are formatted as a sequence of text lines,
+separated by newline '\n' characters. Lines beginning with a hash
+'#' character are comments intended for humans and should be ignored
+by parsing routines. All other lines contain a sequence of fields
+separated by whitespace.
+
+/proc/fs/nfsd/pool_stats
+------------------------
+
+This file is available in kernels from 2.6.30 onwards, if the
+/proc/fs/nfsd filesystem is mounted (it almost always should be).
+
+The first line is a comment which describes the fields present in
+all the other lines. The other lines present the following data as
+a sequence of unsigned decimal numeric fields. One line is shown
+for each NFS thread pool.
+
+All counters are 64 bits wide and wrap naturally. There is no way
+to zero these counters, instead applications should do their own
+rate conversion.
+
+pool
+ The id number of the NFS thread pool to which this line applies.
+ This number does not change.
+
+ Thread pool ids are a contiguous set of small integers starting
+ at zero. The maximum value depends on the thread pool mode, but
+ currently cannot be larger than the number of CPUs in the system.
+ Note that in the default case there will be a single thread pool
+ which contains all the nfsd threads and all the CPUs in the system,
+ and thus this file will have a single line with a pool id of "0".
+
+packets-arrived
+ Counts how many NFS packets have arrived. More precisely, this
+ is the number of times that the network stack has notified the
+ sunrpc server layer that new data may be available on a transport
+ (e.g. an NFS or UDP socket or an NFS/RDMA endpoint).
+
+ Depending on the NFS workload patterns and various network stack
+ effects (such as Large Receive Offload) which can combine packets
+ on the wire, this may be either more or less than the number
+ of NFS calls received (which statistic is available elsewhere).
+ However this is a more accurate and less workload-dependent measure
+ of how much CPU load is being placed on the sunrpc server layer
+ due to NFS network traffic.
+
+sockets-enqueued
+ Counts how many times an NFS transport is enqueued to wait for
+ an nfsd thread to service it, i.e. no nfsd thread was considered
+ available.
+
+ The circumstance this statistic tracks indicates that there was NFS
+ network-facing work to be done but it couldn't be done immediately,
+ thus introducing a small delay in servicing NFS calls. The ideal
+ rate of change for this counter is zero; significantly non-zero
+ values may indicate a performance limitation.
+
+ This can happen either because there are too few nfsd threads in the
+ thread pool for the NFS workload (the workload is thread-limited),
+ or because the NFS workload needs more CPU time than is available in
+ the thread pool (the workload is CPU-limited). In the former case,
+ configuring more nfsd threads will probably improve the performance
+ of the NFS workload. In the latter case, the sunrpc server layer is
+ already choosing not to wake idle nfsd threads because there are too
+ many nfsd threads which want to run but cannot, so configuring more
+ nfsd threads will make no difference whatsoever. The overloads-avoided
+ statistic (see below) can be used to distinguish these cases.
+
+threads-woken
+ Counts how many times an idle nfsd thread is woken to try to
+ receive some data from an NFS transport.
+
+ This statistic tracks the circumstance where incoming
+ network-facing NFS work is being handled quickly, which is a good
+ thing. The ideal rate of change for this counter will be close
+ to but less than the rate of change of the packets-arrived counter.
+
+overloads-avoided
+ Counts how many times the sunrpc server layer chose not to wake an
+ nfsd thread, despite the presence of idle nfsd threads, because
+ too many nfsd threads had been recently woken but could not get
+ enough CPU time to actually run.
+
+ This statistic counts a circumstance where the sunrpc layer
+ heuristically avoids overloading the CPU scheduler with too many
+ runnable nfsd threads. The ideal rate of change for this counter
+ is zero. Significant non-zero values indicate that the workload
+ is CPU limited. Usually this is associated with heavy CPU usage
+ on all the CPUs in the nfsd thread pool.
+
+ If a sustained large overloads-avoided rate is detected on a pool,
+ the top(1) utility should be used to check for the following
+ pattern of CPU usage on all the CPUs associated with the given
+ nfsd thread pool.
+
+ - %us ~= 0 (as you're *NOT* running applications on your NFS server)
+
+ - %wa ~= 0
+
+ - %id ~= 0
+
+ - %sy + %hi + %si ~= 100
+
+ If this pattern is seen, configuring more nfsd threads will *not*
+ improve the performance of the workload. If this patten is not
+ seen, then something more subtle is wrong.
+
+threads-timedout
+ Counts how many times an nfsd thread triggered an idle timeout,
+ i.e. was not woken to handle any incoming network packets for
+ some time.
+
+ This statistic counts a circumstance where there are more nfsd
+ threads configured than can be used by the NFS workload. This is
+ a clue that the number of nfsd threads can be reduced without
+ affecting performance. Unfortunately, it's only a clue and not
+ a strong indication, for a couple of reasons:
+
+ - Currently the rate at which the counter is incremented is quite
+ slow; the idle timeout is 60 minutes. Unless the NFS workload
+ remains constant for hours at a time, this counter is unlikely
+ to be providing information that is still useful.
+
+ - It is usually a wise policy to provide some slack,
+ i.e. configure a few more nfsds than are currently needed,
+ to allow for future spikes in load.
+
+
+Note that incoming packets on NFS transports will be dealt with in
+one of three ways. An nfsd thread can be woken (threads-woken counts
+this case), or the transport can be enqueued for later attention
+(sockets-enqueued counts this case), or the packet can be temporarily
+deferred because the transport is currently being used by an nfsd
+thread. This last case is not very interesting and is not explicitly
+counted, but can be inferred from the other counters thus:
+
+packets-deferred = packets-arrived - ( sockets-enqueued + threads-woken )
+
+
+More
+----
+Descriptions of the other statistics file should go here.
+
+
+Greg Banks <gnb@sgi.com>
+26 Mar 2009
--- /dev/null
+NFSv4.1 Server Implementation
+
+Server support for minorversion 1 can be controlled using the
+/proc/fs/nfsd/versions control file. The string output returned
+by reading this file will contain either "+4.1" or "-4.1"
+correspondingly.
+
+Currently, server support for minorversion 1 is disabled by default.
+It can be enabled at run time by writing the string "+4.1" to
+the /proc/fs/nfsd/versions control file. Note that to write this
+control file, the nfsd service must be taken down. Use your user-mode
+nfs-utils to set this up; see rpc.nfsd(8)
+
+The NFSv4 minorversion 1 (NFSv4.1) implementation in nfsd is based
+on the latest NFSv4.1 Internet Draft:
+http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-29
+
+From the many new features in NFSv4.1 the current implementation
+focuses on the mandatory-to-implement NFSv4.1 Sessions, providing
+"exactly once" semantics and better control and throttling of the
+resources allocated for each client.
+
+Other NFSv4.1 features, Parallel NFS operations in particular,
+are still under development out of tree.
+See http://wiki.linux-nfs.org/wiki/index.php/PNFS_prototype_design
+for more information.
+
+The table below, taken from the NFSv4.1 document, lists
+the operations that are mandatory to implement (REQ), optional
+(OPT), and NFSv4.0 operations that are required not to implement (MNI)
+in minor version 1. The first column indicates the operations that
+are not supported yet by the linux server implementation.
+
+The OPTIONAL features identified and their abbreviations are as follows:
+ pNFS Parallel NFS
+ FDELG File Delegations
+ DDELG Directory Delegations
+
+The following abbreviations indicate the linux server implementation status.
+ I Implemented NFSv4.1 operations.
+ NS Not Supported.
+ NS* unimplemented optional feature.
+ P pNFS features implemented out of tree.
+ PNS pNFS features that are not supported yet (out of tree).
+
+Operations
+
+ +----------------------+------------+--------------+----------------+
+ | Operation | REQ, REC, | Feature | Definition |
+ | | OPT, or | (REQ, REC, | |
+ | | MNI | or OPT) | |
+ +----------------------+------------+--------------+----------------+
+ | ACCESS | REQ | | Section 18.1 |
+NS | BACKCHANNEL_CTL | REQ | | Section 18.33 |
+NS | BIND_CONN_TO_SESSION | REQ | | Section 18.34 |
+ | CLOSE | REQ | | Section 18.2 |
+ | COMMIT | REQ | | Section 18.3 |
+ | CREATE | REQ | | Section 18.4 |
+I | CREATE_SESSION | REQ | | Section 18.36 |
+NS*| DELEGPURGE | OPT | FDELG (REQ) | Section 18.5 |
+ | DELEGRETURN | OPT | FDELG, | Section 18.6 |
+ | | | DDELG, pNFS | |
+ | | | (REQ) | |
+NS | DESTROY_CLIENTID | REQ | | Section 18.50 |
+I | DESTROY_SESSION | REQ | | Section 18.37 |
+I | EXCHANGE_ID | REQ | | Section 18.35 |
+NS | FREE_STATEID | REQ | | Section 18.38 |
+ | GETATTR | REQ | | Section 18.7 |
+P | GETDEVICEINFO | OPT | pNFS (REQ) | Section 18.40 |
+P | GETDEVICELIST | OPT | pNFS (OPT) | Section 18.41 |
+ | GETFH | REQ | | Section 18.8 |
+NS*| GET_DIR_DELEGATION | OPT | DDELG (REQ) | Section 18.39 |
+P | LAYOUTCOMMIT | OPT | pNFS (REQ) | Section 18.42 |
+P | LAYOUTGET | OPT | pNFS (REQ) | Section 18.43 |
+P | LAYOUTRETURN | OPT | pNFS (REQ) | Section 18.44 |
+ | LINK | OPT | | Section 18.9 |
+ | LOCK | REQ | | Section 18.10 |
+ | LOCKT | REQ | | Section 18.11 |
+ | LOCKU | REQ | | Section 18.12 |
+ | LOOKUP | REQ | | Section 18.13 |
+ | LOOKUPP | REQ | | Section 18.14 |
+ | NVERIFY | REQ | | Section 18.15 |
+ | OPEN | REQ | | Section 18.16 |
+NS*| OPENATTR | OPT | | Section 18.17 |
+ | OPEN_CONFIRM | MNI | | N/A |
+ | OPEN_DOWNGRADE | REQ | | Section 18.18 |
+ | PUTFH | REQ | | Section 18.19 |
+ | PUTPUBFH | REQ | | Section 18.20 |
+ | PUTROOTFH | REQ | | Section 18.21 |
+ | READ | REQ | | Section 18.22 |
+ | READDIR | REQ | | Section 18.23 |
+ | READLINK | OPT | | Section 18.24 |
+NS | RECLAIM_COMPLETE | REQ | | Section 18.51 |
+ | RELEASE_LOCKOWNER | MNI | | N/A |
+ | REMOVE | REQ | | Section 18.25 |
+ | RENAME | REQ | | Section 18.26 |
+ | RENEW | MNI | | N/A |
+ | RESTOREFH | REQ | | Section 18.27 |
+ | SAVEFH | REQ | | Section 18.28 |
+ | SECINFO | REQ | | Section 18.29 |
+NS | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, |
+ | | | layout (REQ) | Section 13.12 |
+I | SEQUENCE | REQ | | Section 18.46 |
+ | SETATTR | REQ | | Section 18.30 |
+ | SETCLIENTID | MNI | | N/A |
+ | SETCLIENTID_CONFIRM | MNI | | N/A |
+NS | SET_SSV | REQ | | Section 18.47 |
+NS | TEST_STATEID | REQ | | Section 18.48 |
+ | VERIFY | REQ | | Section 18.31 |
+NS*| WANT_DELEGATION | OPT | FDELG (OPT) | Section 18.49 |
+ | WRITE | REQ | | Section 18.32 |
+
+Callback Operations
+
+ +-------------------------+-----------+-------------+---------------+
+ | Operation | REQ, REC, | Feature | Definition |
+ | | OPT, or | (REQ, REC, | |
+ | | MNI | or OPT) | |
+ +-------------------------+-----------+-------------+---------------+
+ | CB_GETATTR | OPT | FDELG (REQ) | Section 20.1 |
+P | CB_LAYOUTRECALL | OPT | pNFS (REQ) | Section 20.3 |
+NS*| CB_NOTIFY | OPT | DDELG (REQ) | Section 20.4 |
+P | CB_NOTIFY_DEVICEID | OPT | pNFS (OPT) | Section 20.12 |
+NS*| CB_NOTIFY_LOCK | OPT | | Section 20.11 |
+NS*| CB_PUSH_DELEG | OPT | FDELG (OPT) | Section 20.5 |
+ | CB_RECALL | OPT | FDELG, | Section 20.2 |
+ | | | DDELG, pNFS | |
+ | | | (REQ) | |
+NS*| CB_RECALL_ANY | OPT | FDELG, | Section 20.6 |
+ | | | DDELG, pNFS | |
+ | | | (REQ) | |
+NS | CB_RECALL_SLOT | REQ | | Section 20.8 |
+NS*| CB_RECALLABLE_OBJ_AVAIL | OPT | DDELG, pNFS | Section 20.7 |
+ | | | (REQ) | |
+I | CB_SEQUENCE | OPT | FDELG, | Section 20.9 |
+ | | | DDELG, pNFS | |
+ | | | (REQ) | |
+NS*| CB_WANTS_CANCELLED | OPT | FDELG, | Section 20.10 |
+ | | | DDELG, pNFS | |
+ | | | (REQ) | |
+ +-------------------------+-----------+-------------+---------------+
+
+Implementation notes:
+
+EXCHANGE_ID:
+* only SP4_NONE state protection supported
+* implementation ids are ignored
+
+CREATE_SESSION:
+* backchannel attributes are ignored
+* backchannel security parameters are ignored
+
+SEQUENCE:
+* no support for dynamic slot table renegotiation (optional)
+
+nfsv4.1 COMPOUND rules:
+The following cases aren't supported yet:
+* Enforcing of NFS4ERR_NOT_ONLY_OP for: BIND_CONN_TO_SESSION, CREATE_SESSION,
+ DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID.
+* DESTROY_SESSION MUST be the final operation in the COMPOUND request.
+
ret = nlm_granted;
goto out;
case -EAGAIN:
+ /*
+ * If this is a blocking request for an
+ * already pending lock request then we need
+ * to put it back on lockd's block list
+ */
+ if (wait)
+ break;
ret = nlm_lck_denied;
- break;
+ goto out;
case FILE_LOCK_DEFERRED:
if (wait)
break;
goto out;
}
- ret = nlm_lck_denied;
- if (!wait)
- goto out;
-
ret = nlm_lck_blocked;
/* Append to list of blocked */
config NFSD
tristate "NFS server support"
depends on INET
+ depends on FILE_LOCKING
select LOCKD
select SUNRPC
select EXPORTFS
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/major.h>
+#include <linux/magic.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
struct nfsd3_writeres *resp)
{
__be32 nfserr;
+ unsigned long cnt = argp->len;
dprintk("nfsd: WRITE(3) %s %d bytes at %ld%s\n",
SVCFH_fmt(&argp->fh),
nfserr = nfsd_write(rqstp, &resp->fh, NULL,
argp->offset,
rqstp->rq_vec, argp->vlen,
- argp->len,
+ &cnt,
&resp->committed);
- resp->count = argp->count;
+ resp->count = cnt;
RETURN_STATUS(nfserr);
}
struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
/* Note that we don't care for remote fs's here */
- if (sb->s_magic == 0x4d44 /* MSDOS_SUPER_MAGIC */) {
+ if (sb->s_magic == MSDOS_SUPER_MAGIC) {
resp->f_properties = NFS3_FSF_BILLYBOY;
}
resp->f_maxfilesize = sb->s_maxbytes;
resp->p_link_max = EXT2_LINK_MAX;
resp->p_name_max = EXT2_NAME_LEN;
break;
- case 0x4d44: /* MSDOS_SUPER_MAGIC */
+ case MSDOS_SUPER_MAGIC:
resp->p_case_insensitive = 1;
resp->p_case_preserving = 0;
break;
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
{
__be32 *p;
- int len = cb_rec->cbr_fhlen;
+ int len = cb_rec->cbr_fh.fh_size;
RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
WRITE32(OP_CB_RECALL);
WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
WRITE32(cb_rec->cbr_trunc);
WRITE32(len);
- WRITEMEM(cb_rec->cbr_fhval, len);
+ WRITEMEM(&cb_rec->cbr_fh.fh_base, len);
return 0;
}
/* Reference counting, callback cleanup, etc., all look racy as heck.
* And why is cb_set an atomic? */
-static int do_probe_callback(void *data)
+static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
{
- struct nfs4_client *clp = data;
struct sockaddr_in addr;
struct nfs4_callback *cb = &clp->cl_callback;
struct rpc_timeout timeparms = {
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
.client_name = clp->cl_principal,
};
- struct rpc_message msg = {
- .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
- .rpc_argp = clp,
- };
struct rpc_clnt *client;
- int status;
- if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) {
- status = nfserr_cb_path_down;
- goto out_err;
- }
+ if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
+ return ERR_PTR(-EINVAL);
/* Initialize address */
memset(&addr, 0, sizeof(addr));
/* Create RPC client */
client = rpc_create(&args);
+ if (IS_ERR(client))
+ dprintk("NFSD: couldn't create callback client: %ld\n",
+ PTR_ERR(client));
+ return client;
+
+}
+
+static int do_probe_callback(void *data)
+{
+ struct nfs4_client *clp = data;
+ struct nfs4_callback *cb = &clp->cl_callback;
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
+ .rpc_argp = clp,
+ };
+ struct rpc_clnt *client;
+ int status;
+
+ client = setup_callback_client(clp);
if (IS_ERR(client)) {
- dprintk("NFSD: couldn't create callback client\n");
status = PTR_ERR(client);
+ dprintk("NFSD: couldn't create callback client: %d\n",
+ status);
goto out_err;
}
out_release_client:
rpc_shutdown_client(client);
out_err:
- dprintk("NFSD: warning: no callback path to client %.*s\n",
- (int)clp->cl_name.len, clp->cl_name.data);
+ dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
+ (int)clp->cl_name.len, clp->cl_name.data, status);
put_nfs4_client(clp);
- return status;
+ return 0;
}
/*
/*
* called with dp->dl_count inc'ed.
- * nfs4_lock_state() may or may not have been called.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
open->op_truncate = 0;
if (open->op_create) {
+ /* FIXME: check session persistence and pnfs flags.
+ * The nfsv4.1 spec requires the following semantics:
+ *
+ * Persistent | pNFS | Server REQUIRED | Client Allowed
+ * Reply Cache | server | |
+ * -------------+--------+-----------------+--------------------
+ * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
+ * | | | (SHOULD)
+ * | | and EXCLUSIVE4 | or EXCLUSIVE4
+ * | | | (SHOULD NOT)
+ * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
+ * yes | no | GUARDED4 | GUARDED4
+ * yes | yes | GUARDED4 | GUARDED4
+ */
+
/*
* Note: create modes (UNCHECKED,GUARDED...) are the same
* in NFSv4 as in v3.
(u32 *)open->op_verf.data,
&open->op_truncate, &created);
- /* If we ever decide to use different attrs to store the
- * verifier in nfsd_create_v3, then we'll need to change this
+ /*
+ * Following rfc 3530 14.2.16, use the returned bitmask
+ * to indicate which attributes we used to store the
+ * verifier:
*/
if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
- open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
+ open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
FATTR4_WORD1_TIME_MODIFY);
} else {
status = nfsd_lookup(rqstp, current_fh,
goto out;
set_change_info(&open->op_cinfo, current_fh);
-
- /* set reply cache */
fh_dup2(current_fh, &resfh);
- open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
- memcpy(open->op_stateowner->so_replay.rp_openfh,
- &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
+ /* set reply cache */
+ fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ &resfh.fh_handle);
if (!created)
status = do_open_permission(rqstp, current_fh, open,
NFSD_MAY_NOP);
memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
/* set replay cache */
- open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
- memcpy(open->op_stateowner->so_replay.rp_openfh,
- ¤t_fh->fh_handle.fh_base,
- current_fh->fh_handle.fh_size);
+ fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ ¤t_fh->fh_handle);
open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
(open->op_iattr.ia_size == 0);
return status;
}
+static void
+copy_clientid(clientid_t *clid, struct nfsd4_session *session)
+{
+ struct nfsd4_sessionid *sid =
+ (struct nfsd4_sessionid *)session->se_sessionid.data;
+
+ clid->cl_boot = sid->clientid.cl_boot;
+ clid->cl_id = sid->clientid.cl_id;
+}
static __be32
nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_open *open)
{
__be32 status;
+ struct nfsd4_compoundres *resp;
+
dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
(int)open->op_fname.len, open->op_fname.data,
open->op_stateowner);
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
+ if (nfsd4_has_session(cstate))
+ copy_clientid(&open->op_clientid, cstate->session);
+
nfs4_lock_state();
/* check seqid for replay. set nfs4_owner */
- status = nfsd4_process_open1(open);
+ resp = rqstp->rq_resp;
+ status = nfsd4_process_open1(&resp->cstate, open);
if (status == nfserr_replay_me) {
struct nfs4_replay *rp = &open->op_stateowner->so_replay;
fh_put(&cstate->current_fh);
- cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
- memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
- rp->rp_openfh_len);
+ fh_copy_shallow(&cstate->current_fh.fh_handle,
+ &rp->rp_openfh);
status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
if (status)
dprintk("nfsd4_open: replay failed"
switch (open->op_claim_type) {
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
- status = nfserr_inval;
- if (open->op_create)
- goto out;
- /* fall through */
case NFS4_OPEN_CLAIM_NULL:
/*
* (1) set CURRENT_FH to the file being opened,
if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
return nfserr_inval;
- getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
- getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
+ getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
+ getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
+ getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
getattr->ga_fhp = &cstate->current_fh;
return nfs_ok;
nfs4_lock_state();
/* check stateid */
- if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
- &read->rd_stateid,
- CHECK_FH | RD_STATE, &read->rd_filp))) {
+ if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
+ RD_STATE, &read->rd_filp))) {
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
}
if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
return nfserr_inval;
- readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
- readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
+ readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
+ readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
+ readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
(cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(&cstate->current_fh,
- &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
+ status = nfs4_preprocess_stateid_op(cstate,
+ &setattr->sa_stateid, WR_STATE, NULL);
nfs4_unlock_state();
if (status) {
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
struct file *filp = NULL;
u32 *p;
__be32 status = nfs_ok;
+ unsigned long cnt;
/* no need to check permission - this will be done in nfsd_write() */
return nfserr_inval;
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
- CHECK_FH | WR_STATE, &filp);
+ status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
if (filp)
get_file(filp);
nfs4_unlock_state();
return status;
}
- write->wr_bytes_written = write->wr_buflen;
+ cnt = write->wr_buflen;
write->wr_how_written = write->wr_stable_how;
p = (u32 *)write->wr_verifier.data;
*p++ = nfssvc_boot.tv_sec;
status = nfsd_write(rqstp, &cstate->current_fh, filp,
write->wr_offset, rqstp->rq_vec, write->wr_vlen,
- write->wr_buflen, &write->wr_how_written);
+ &cnt, &write->wr_how_written);
if (filp)
fput(filp);
+ write->wr_bytes_written = cnt;
+
if (status == nfserr_symlink)
status = nfserr_inval;
return status;
if (status)
return status;
- if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
- || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
+ if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion))
+ || (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion))
+ || (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
return nfserr_attrnotsupp;
if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
|| (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
if (status)
goto out_kfree;
- p = buf + 3;
+ /* skip bitmap */
+ p = buf + 1 + ntohl(buf[0]);
status = nfserr_not_same;
if (ntohl(*p++) != verify->ve_attrlen)
goto out_kfree;
nfsdstats.nfs4_opcount[opnum]++;
}
-static void cstate_free(struct nfsd4_compound_state *cstate)
-{
- if (cstate == NULL)
- return;
- fh_put(&cstate->current_fh);
- fh_put(&cstate->save_fh);
- BUG_ON(cstate->replay_owner);
- kfree(cstate);
-}
-
-static struct nfsd4_compound_state *cstate_alloc(void)
-{
- struct nfsd4_compound_state *cstate;
-
- cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
- if (cstate == NULL)
- return NULL;
- fh_init(&cstate->current_fh, NFS4_FHSIZE);
- fh_init(&cstate->save_fh, NFS4_FHSIZE);
- cstate->replay_owner = NULL;
- return cstate;
-}
-
typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
void *);
+enum nfsd4_op_flags {
+ ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
+ ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
+ ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
+};
struct nfsd4_operation {
nfsd4op_func op_func;
u32 op_flags;
-/* Most ops require a valid current filehandle; a few don't: */
-#define ALLOWED_WITHOUT_FH 1
-/* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
-#define ALLOWED_ON_ABSENT_FS 2
char *op_name;
};
static const char *nfsd4_op_name(unsigned opnum);
+/*
+ * This is a replay of a compound for which no cache entry pages
+ * were used. Encode the sequence operation, and if cachethis is FALSE
+ * encode the uncache rep error on the next operation.
+ */
+static __be32
+nfsd4_enc_uncached_replay(struct nfsd4_compoundargs *args,
+ struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_op *op;
+
+ dprintk("--> %s resp->opcnt %d ce_cachethis %u \n", __func__,
+ resp->opcnt, resp->cstate.slot->sl_cache_entry.ce_cachethis);
+
+ /* Encode the replayed sequence operation */
+ BUG_ON(resp->opcnt != 1);
+ op = &args->ops[resp->opcnt - 1];
+ nfsd4_encode_operation(resp, op);
+
+ /*return nfserr_retry_uncached_rep in next operation. */
+ if (resp->cstate.slot->sl_cache_entry.ce_cachethis == 0) {
+ op = &args->ops[resp->opcnt++];
+ op->status = nfserr_retry_uncached_rep;
+ nfsd4_encode_operation(resp, op);
+ }
+ return op->status;
+}
+
+/*
+ * Enforce NFSv4.1 COMPOUND ordering rules.
+ *
+ * TODO:
+ * - enforce NFS4ERR_NOT_ONLY_OP,
+ * - DESTROY_SESSION MUST be the final operation in the COMPOUND request.
+ */
+static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args)
+{
+ if (args->minorversion && args->opcnt > 0) {
+ struct nfsd4_op *op = &args->ops[0];
+ return (op->status == nfserr_op_illegal) ||
+ (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP);
+ }
+ return true;
+}
+
/*
* COMPOUND call.
*/
{
struct nfsd4_op *op;
struct nfsd4_operation *opdesc;
- struct nfsd4_compound_state *cstate = NULL;
+ struct nfsd4_compound_state *cstate = &resp->cstate;
int slack_bytes;
__be32 status;
resp->xbuf = &rqstp->rq_res;
- resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
+ resp->p = rqstp->rq_res.head[0].iov_base +
+ rqstp->rq_res.head[0].iov_len;
resp->tagp = resp->p;
/* reserve space for: taglen, tag, and opcnt */
resp->p += 2 + XDR_QUADLEN(args->taglen);
resp->tag = args->tag;
resp->opcnt = 0;
resp->rqstp = rqstp;
+ resp->cstate.minorversion = args->minorversion;
+ resp->cstate.replay_owner = NULL;
+ fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
+ fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
+ /* Use the deferral mechanism only for NFSv4.0 compounds */
+ rqstp->rq_usedeferral = (args->minorversion == 0);
/*
* According to RFC3010, this takes precedence over all other errors.
*/
status = nfserr_minor_vers_mismatch;
- if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
+ if (args->minorversion > nfsd_supported_minorversion)
goto out;
- status = nfserr_resource;
- cstate = cstate_alloc();
- if (cstate == NULL)
- goto out;
+ if (!nfs41_op_ordering_ok(args)) {
+ op = &args->ops[0];
+ op->status = nfserr_sequence_pos;
+ goto encode_op;
+ }
status = nfs_ok;
while (!status && resp->opcnt < args->opcnt) {
dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
resp->opcnt, args->opcnt, op->opnum,
nfsd4_op_name(op->opnum));
-
/*
* The XDR decode routines may have pre-set op->status;
* for example, if there is a miscellaneous XDR error
BUG_ON(op->status == nfs_ok);
encode_op:
+ /* Only from SEQUENCE or CREATE_SESSION */
+ if (resp->cstate.status == nfserr_replay_cache) {
+ dprintk("%s NFS4.1 replay from cache\n", __func__);
+ if (nfsd4_not_cached(resp))
+ status = nfsd4_enc_uncached_replay(args, resp);
+ else
+ status = op->status;
+ goto out;
+ }
if (op->status == nfserr_replay_me) {
op->replay = &cstate->replay_owner->so_replay;
nfsd4_encode_replay(resp, op);
nfsd4_increment_op_stats(op->opnum);
}
+ if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
+ dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
+ status = nfserr_jukebox;
+ }
- cstate_free(cstate);
+ resp->cstate.status = status;
+ fh_put(&resp->cstate.current_fh);
+ fh_put(&resp->cstate.save_fh);
+ BUG_ON(resp->cstate.replay_owner);
out:
nfsd4_release_compoundargs(args);
+ /* Reset deferral mechanism for RPC deferrals */
+ rqstp->rq_usedeferral = 1;
dprintk("nfsv4 compound returned %d\n", ntohl(status));
return status;
}
-static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
+static struct nfsd4_operation nfsd4_ops[] = {
[OP_ACCESS] = {
.op_func = (nfsd4op_func)nfsd4_access,
.op_name = "OP_ACCESS",
.op_name = "OP_PUTFH",
},
[OP_PUTPUBFH] = {
- /* unsupported, just for future reference: */
+ .op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
.op_name = "OP_PUTPUBFH",
},
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
.op_name = "OP_RELEASE_LOCKOWNER",
},
+
+ /* NFSv4.1 operations */
+ [OP_EXCHANGE_ID] = {
+ .op_func = (nfsd4op_func)nfsd4_exchange_id,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_EXCHANGE_ID",
+ },
+ [OP_CREATE_SESSION] = {
+ .op_func = (nfsd4op_func)nfsd4_create_session,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_CREATE_SESSION",
+ },
+ [OP_DESTROY_SESSION] = {
+ .op_func = (nfsd4op_func)nfsd4_destroy_session,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_DESTROY_SESSION",
+ },
+ [OP_SEQUENCE] = {
+ .op_func = (nfsd4op_func)nfsd4_sequence,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_SEQUENCE",
+ },
};
static const char *nfsd4_op_name(unsigned opnum)
typedef int (recdir_func)(struct dentry *, struct dentry *);
-struct dentry_list {
- struct dentry *dentry;
+struct name_list {
+ char name[HEXDIR_LEN];
struct list_head list;
};
-struct dentry_list_arg {
- struct list_head dentries;
- struct dentry *parent;
-};
-
static int
-nfsd4_build_dentrylist(void *arg, const char *name, int namlen,
+nfsd4_build_namelist(void *arg, const char *name, int namlen,
loff_t offset, u64 ino, unsigned int d_type)
{
- struct dentry_list_arg *dla = arg;
- struct list_head *dentries = &dla->dentries;
- struct dentry *parent = dla->parent;
- struct dentry *dentry;
- struct dentry_list *child;
+ struct list_head *names = arg;
+ struct name_list *entry;
- if (name && isdotent(name, namlen))
+ if (namlen != HEXDIR_LEN - 1)
return 0;
- dentry = lookup_one_len(name, parent, namlen);
- if (IS_ERR(dentry))
- return PTR_ERR(dentry);
- child = kmalloc(sizeof(*child), GFP_KERNEL);
- if (child == NULL)
+ entry = kmalloc(sizeof(struct name_list), GFP_KERNEL);
+ if (entry == NULL)
return -ENOMEM;
- child->dentry = dentry;
- list_add(&child->list, dentries);
+ memcpy(entry->name, name, HEXDIR_LEN - 1);
+ entry->name[HEXDIR_LEN - 1] = '\0';
+ list_add(&entry->list, names);
return 0;
}
{
const struct cred *original_cred;
struct file *filp;
- struct dentry_list_arg dla = {
- .parent = dir,
- };
- struct list_head *dentries = &dla.dentries;
- struct dentry_list *child;
+ LIST_HEAD(names);
+ struct name_list *entry;
+ struct dentry *dentry;
int status;
if (!rec_dir_init)
status = nfs4_save_creds(&original_cred);
if (status < 0)
return status;
- INIT_LIST_HEAD(dentries);
filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY,
current_cred());
status = PTR_ERR(filp);
if (IS_ERR(filp))
goto out;
- INIT_LIST_HEAD(dentries);
- status = vfs_readdir(filp, nfsd4_build_dentrylist, &dla);
+ status = vfs_readdir(filp, nfsd4_build_namelist, &names);
fput(filp);
- while (!list_empty(dentries)) {
- child = list_entry(dentries->next, struct dentry_list, list);
- status = f(dir, child->dentry);
+ while (!list_empty(&names)) {
+ entry = list_entry(names.next, struct name_list, list);
+
+ dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
+ if (IS_ERR(dentry)) {
+ status = PTR_ERR(dentry);
+ goto out;
+ }
+ status = f(dir, dentry);
+ dput(dentry);
if (status)
goto out;
- list_del(&child->list);
- dput(child->dentry);
- kfree(child);
+ list_del(&entry->list);
+ kfree(entry);
}
out:
- while (!list_empty(dentries)) {
- child = list_entry(dentries->next, struct dentry_list, list);
- list_del(&child->list);
- dput(child->dentry);
- kfree(child);
+ while (!list_empty(&names)) {
+ entry = list_entry(names.next, struct name_list, list);
+ list_del(&entry->list);
+ kfree(entry);
}
nfs4_reset_creds(original_cred);
return status;
{
int status;
- if (nfs4_has_reclaimed_state(child->d_name.name))
+ /* note: we currently use this path only for minorversion 0 */
+ if (nfs4_has_reclaimed_state(child->d_name.name, false))
return 0;
status = nfsd4_clear_clid_dir(parent, child);
static u32 nfs4_init;
static stateid_t zerostateid; /* bits all 0 */
static stateid_t onestateid; /* bits all 1 */
+static u64 current_sessionid = 1;
#define ZERO_STATEID(stateid) (!memcmp((stateid), &zerostateid, sizeof(stateid_t)))
#define ONE_STATEID(stateid) (!memcmp((stateid), &onestateid, sizeof(stateid_t)))
/* forward declarations */
static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
-static void release_stateid_lockowners(struct nfs4_stateid *open_stp);
static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
static void nfs4_set_recdir(char *recdir);
-/* Locking:
- *
- * client_mutex:
- * protects clientid_hashtbl[], clientstr_hashtbl[],
- * unconfstr_hashtbl[], uncofid_hashtbl[].
- */
+/* Locking: */
+
+/* Currently used for almost all code touching nfsv4 state: */
static DEFINE_MUTEX(client_mutex);
+/*
+ * Currently used for the del_recall_lru and file hash table. In an
+ * effort to decrease the scope of the client_mutex, this spinlock may
+ * eventually cover more:
+ */
+static DEFINE_SPINLOCK(recall_lock);
+
static struct kmem_cache *stateowner_slab = NULL;
static struct kmem_cache *file_slab = NULL;
static struct kmem_cache *stateid_slab = NULL;
return x;
}
-/* forward declarations */
-static void release_stateowner(struct nfs4_stateowner *sop);
-static void release_stateid(struct nfs4_stateid *stp, int flags);
-
-/*
- * Delegation state
- */
-
-/* recall_lock protects the del_recall_lru */
-static DEFINE_SPINLOCK(recall_lock);
static struct list_head del_recall_lru;
-static void
-free_nfs4_file(struct kref *kref)
-{
- struct nfs4_file *fp = container_of(kref, struct nfs4_file, fi_ref);
- list_del(&fp->fi_hash);
- iput(fp->fi_inode);
- kmem_cache_free(file_slab, fp);
-}
-
static inline void
put_nfs4_file(struct nfs4_file *fi)
{
- kref_put(&fi->fi_ref, free_nfs4_file);
+ if (atomic_dec_and_lock(&fi->fi_ref, &recall_lock)) {
+ list_del(&fi->fi_hash);
+ spin_unlock(&recall_lock);
+ iput(fi->fi_inode);
+ kmem_cache_free(file_slab, fi);
+ }
}
static inline void
get_nfs4_file(struct nfs4_file *fi)
{
- kref_get(&fi->fi_ref);
+ atomic_inc(&fi->fi_ref);
}
static int num_delegations;
dp->dl_stateid.si_stateownerid = current_delegid++;
dp->dl_stateid.si_fileid = 0;
dp->dl_stateid.si_generation = 0;
- dp->dl_fhlen = current_fh->fh_handle.fh_size;
- memcpy(dp->dl_fhval, ¤t_fh->fh_handle.fh_base,
- current_fh->fh_handle.fh_size);
+ fh_copy_shallow(&dp->dl_fh, ¤t_fh->fh_handle);
dp->dl_time = 0;
atomic_set(&dp->dl_count, 1);
list_add(&dp->dl_perfile, &fp->fi_delegations);
static struct list_head client_lru;
static struct list_head close_lru;
+static void unhash_generic_stateid(struct nfs4_stateid *stp)
+{
+ list_del(&stp->st_hash);
+ list_del(&stp->st_perfile);
+ list_del(&stp->st_perstateowner);
+}
+
+static void free_generic_stateid(struct nfs4_stateid *stp)
+{
+ put_nfs4_file(stp->st_file);
+ kmem_cache_free(stateid_slab, stp);
+}
+
+static void release_lock_stateid(struct nfs4_stateid *stp)
+{
+ unhash_generic_stateid(stp);
+ locks_remove_posix(stp->st_vfs_file, (fl_owner_t)stp->st_stateowner);
+ free_generic_stateid(stp);
+}
+
+static void unhash_lockowner(struct nfs4_stateowner *sop)
+{
+ struct nfs4_stateid *stp;
+
+ list_del(&sop->so_idhash);
+ list_del(&sop->so_strhash);
+ list_del(&sop->so_perstateid);
+ while (!list_empty(&sop->so_stateids)) {
+ stp = list_first_entry(&sop->so_stateids,
+ struct nfs4_stateid, st_perstateowner);
+ release_lock_stateid(stp);
+ }
+}
+
+static void release_lockowner(struct nfs4_stateowner *sop)
+{
+ unhash_lockowner(sop);
+ nfs4_put_stateowner(sop);
+}
+
+static void
+release_stateid_lockowners(struct nfs4_stateid *open_stp)
+{
+ struct nfs4_stateowner *lock_sop;
+
+ while (!list_empty(&open_stp->st_lockowners)) {
+ lock_sop = list_entry(open_stp->st_lockowners.next,
+ struct nfs4_stateowner, so_perstateid);
+ /* list_del(&open_stp->st_lockowners); */
+ BUG_ON(lock_sop->so_is_open_owner);
+ release_lockowner(lock_sop);
+ }
+}
+
+static void release_open_stateid(struct nfs4_stateid *stp)
+{
+ unhash_generic_stateid(stp);
+ release_stateid_lockowners(stp);
+ nfsd_close(stp->st_vfs_file);
+ free_generic_stateid(stp);
+}
+
+static void unhash_openowner(struct nfs4_stateowner *sop)
+{
+ struct nfs4_stateid *stp;
+
+ list_del(&sop->so_idhash);
+ list_del(&sop->so_strhash);
+ list_del(&sop->so_perclient);
+ list_del(&sop->so_perstateid); /* XXX: necessary? */
+ while (!list_empty(&sop->so_stateids)) {
+ stp = list_first_entry(&sop->so_stateids,
+ struct nfs4_stateid, st_perstateowner);
+ release_open_stateid(stp);
+ }
+}
+
+static void release_openowner(struct nfs4_stateowner *sop)
+{
+ unhash_openowner(sop);
+ list_del(&sop->so_close_lru);
+ nfs4_put_stateowner(sop);
+}
+
+static DEFINE_SPINLOCK(sessionid_lock);
+#define SESSION_HASH_SIZE 512
+static struct list_head sessionid_hashtbl[SESSION_HASH_SIZE];
+
+static inline int
+hash_sessionid(struct nfs4_sessionid *sessionid)
+{
+ struct nfsd4_sessionid *sid = (struct nfsd4_sessionid *)sessionid;
+
+ return sid->sequence % SESSION_HASH_SIZE;
+}
+
+static inline void
+dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
+{
+ u32 *ptr = (u32 *)(&sessionid->data[0]);
+ dprintk("%s: %u:%u:%u:%u\n", fn, ptr[0], ptr[1], ptr[2], ptr[3]);
+}
+
+static void
+gen_sessionid(struct nfsd4_session *ses)
+{
+ struct nfs4_client *clp = ses->se_client;
+ struct nfsd4_sessionid *sid;
+
+ sid = (struct nfsd4_sessionid *)ses->se_sessionid.data;
+ sid->clientid = clp->cl_clientid;
+ sid->sequence = current_sessionid++;
+ sid->reserved = 0;
+}
+
+/*
+ * Give the client the number of slots it requests bound by
+ * NFSD_MAX_SLOTS_PER_SESSION and by sv_drc_max_pages.
+ *
+ * If we run out of pages (sv_drc_pages_used == sv_drc_max_pages) we
+ * should (up to a point) re-negotiate active sessions and reduce their
+ * slot usage to make rooom for new connections. For now we just fail the
+ * create session.
+ */
+static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
+{
+ int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT;
+
+ spin_lock(&nfsd_serv->sv_lock);
+ if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages)
+ np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used;
+ nfsd_serv->sv_drc_pages_used += np;
+ spin_unlock(&nfsd_serv->sv_lock);
+
+ if (np <= 0) {
+ status = nfserr_resource;
+ fchan->maxreqs = 0;
+ } else
+ fchan->maxreqs = np / NFSD_PAGES_PER_SLOT;
+
+ return status;
+}
+
+/*
+ * fchan holds the client values on input, and the server values on output
+ */
+static int init_forechannel_attrs(struct svc_rqst *rqstp,
+ struct nfsd4_session *session,
+ struct nfsd4_channel_attrs *fchan)
+{
+ int status = 0;
+ __u32 maxcount = svc_max_payload(rqstp);
+
+ /* headerpadsz set to zero in encode routine */
+
+ /* Use the client's max request and max response size if possible */
+ if (fchan->maxreq_sz > maxcount)
+ fchan->maxreq_sz = maxcount;
+ session->se_fmaxreq_sz = fchan->maxreq_sz;
+
+ if (fchan->maxresp_sz > maxcount)
+ fchan->maxresp_sz = maxcount;
+ session->se_fmaxresp_sz = fchan->maxresp_sz;
+
+ /* Set the max response cached size our default which is
+ * a multiple of PAGE_SIZE and small */
+ session->se_fmaxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
+ fchan->maxresp_cached = session->se_fmaxresp_cached;
+
+ /* Use the client's maxops if possible */
+ if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND)
+ fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND;
+ session->se_fmaxops = fchan->maxops;
+
+ /* try to use the client requested number of slots */
+ if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
+ fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
+
+ /* FIXME: Error means no more DRC pages so the server should
+ * recover pages from existing sessions. For now fail session
+ * creation.
+ */
+ status = set_forechannel_maxreqs(fchan);
+
+ session->se_fnumslots = fchan->maxreqs;
+ return status;
+}
+
+static int
+alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
+ struct nfsd4_create_session *cses)
+{
+ struct nfsd4_session *new, tmp;
+ int idx, status = nfserr_resource, slotsize;
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ /* FIXME: For now, we just accept the client back channel attributes. */
+ status = init_forechannel_attrs(rqstp, &tmp, &cses->fore_channel);
+ if (status)
+ goto out;
+
+ /* allocate struct nfsd4_session and slot table in one piece */
+ slotsize = tmp.se_fnumslots * sizeof(struct nfsd4_slot);
+ new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
+ if (!new)
+ goto out;
+
+ memcpy(new, &tmp, sizeof(*new));
+
+ new->se_client = clp;
+ gen_sessionid(new);
+ idx = hash_sessionid(&new->se_sessionid);
+ memcpy(clp->cl_sessionid.data, new->se_sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
+
+ new->se_flags = cses->flags;
+ kref_init(&new->se_ref);
+ spin_lock(&sessionid_lock);
+ list_add(&new->se_hash, &sessionid_hashtbl[idx]);
+ list_add(&new->se_perclnt, &clp->cl_sessions);
+ spin_unlock(&sessionid_lock);
+
+ status = nfs_ok;
+out:
+ return status;
+}
+
+/* caller must hold sessionid_lock */
+static struct nfsd4_session *
+find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid)
+{
+ struct nfsd4_session *elem;
+ int idx;
+
+ dump_sessionid(__func__, sessionid);
+ idx = hash_sessionid(sessionid);
+ dprintk("%s: idx is %d\n", __func__, idx);
+ /* Search in the appropriate list */
+ list_for_each_entry(elem, &sessionid_hashtbl[idx], se_hash) {
+ dump_sessionid("list traversal", &elem->se_sessionid);
+ if (!memcmp(elem->se_sessionid.data, sessionid->data,
+ NFS4_MAX_SESSIONID_LEN)) {
+ return elem;
+ }
+ }
+
+ dprintk("%s: session not found\n", __func__);
+ return NULL;
+}
+
+/* caller must hold sessionid_lock */
+static void
+unhash_session(struct nfsd4_session *ses)
+{
+ list_del(&ses->se_hash);
+ list_del(&ses->se_perclnt);
+}
+
+static void
+release_session(struct nfsd4_session *ses)
+{
+ spin_lock(&sessionid_lock);
+ unhash_session(ses);
+ spin_unlock(&sessionid_lock);
+ nfsd4_put_session(ses);
+}
+
+static void nfsd4_release_respages(struct page **respages, short resused);
+
+void
+free_session(struct kref *kref)
+{
+ struct nfsd4_session *ses;
+ int i;
+
+ ses = container_of(kref, struct nfsd4_session, se_ref);
+ for (i = 0; i < ses->se_fnumslots; i++) {
+ struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry;
+ nfsd4_release_respages(e->ce_respages, e->ce_resused);
+ }
+ kfree(ses->se_slots);
+ kfree(ses);
+}
+
static inline void
renew_client(struct nfs4_client *clp)
{
{
if (clid->cl_boot == boot_time)
return 0;
- dprintk("NFSD stale clientid (%08x/%08x)\n",
- clid->cl_boot, clid->cl_id);
+ dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
+ clid->cl_boot, clid->cl_id, boot_time);
return 1;
}
free_client(struct nfs4_client *clp)
{
shutdown_callback_client(clp);
+ nfsd4_release_respages(clp->cl_slot.sl_cache_entry.ce_respages,
+ clp->cl_slot.sl_cache_entry.ce_resused);
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_principal);
list_del(&clp->cl_lru);
while (!list_empty(&clp->cl_openowners)) {
sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
- release_stateowner(sop);
+ release_openowner(sop);
+ }
+ while (!list_empty(&clp->cl_sessions)) {
+ struct nfsd4_session *ses;
+ ses = list_entry(clp->cl_sessions.next, struct nfsd4_session,
+ se_perclnt);
+ release_session(ses);
}
put_nfs4_client(clp);
}
INIT_LIST_HEAD(&clp->cl_strhash);
INIT_LIST_HEAD(&clp->cl_openowners);
INIT_LIST_HEAD(&clp->cl_delegations);
+ INIT_LIST_HEAD(&clp->cl_sessions);
INIT_LIST_HEAD(&clp->cl_lru);
return clp;
}
return NULL;
}
+/*
+ * Return 1 iff clp's clientid establishment method matches the use_exchange_id
+ * parameter. Matching is based on the fact the at least one of the
+ * EXCHGID4_FLAG_USE_{NON_PNFS,PNFS_MDS,PNFS_DS} flags must be set for v4.1
+ *
+ * FIXME: we need to unify the clientid namespaces for nfsv4.x
+ * and correctly deal with client upgrade/downgrade in EXCHANGE_ID
+ * and SET_CLIENTID{,_CONFIRM}
+ */
+static inline int
+match_clientid_establishment(struct nfs4_client *clp, bool use_exchange_id)
+{
+ bool has_exchange_flags = (clp->cl_exchange_flags != 0);
+ return use_exchange_id == has_exchange_flags;
+}
+
static struct nfs4_client *
-find_confirmed_client_by_str(const char *dname, unsigned int hashval)
+find_confirmed_client_by_str(const char *dname, unsigned int hashval,
+ bool use_exchange_id)
{
struct nfs4_client *clp;
list_for_each_entry(clp, &conf_str_hashtbl[hashval], cl_strhash) {
- if (same_name(clp->cl_recdir, dname))
+ if (same_name(clp->cl_recdir, dname) &&
+ match_clientid_establishment(clp, use_exchange_id))
return clp;
}
return NULL;
}
static struct nfs4_client *
-find_unconfirmed_client_by_str(const char *dname, unsigned int hashval)
+find_unconfirmed_client_by_str(const char *dname, unsigned int hashval,
+ bool use_exchange_id)
{
struct nfs4_client *clp;
list_for_each_entry(clp, &unconf_str_hashtbl[hashval], cl_strhash) {
- if (same_name(clp->cl_recdir, dname))
+ if (same_name(clp->cl_recdir, dname) &&
+ match_clientid_establishment(clp, use_exchange_id))
return clp;
}
return NULL;
return;
}
+void
+nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp)
+{
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+
+ resp->cstate.statp = statp;
+}
+
+/*
+ * Dereference the result pages.
+ */
+static void
+nfsd4_release_respages(struct page **respages, short resused)
+{
+ int i;
+
+ dprintk("--> %s\n", __func__);
+ for (i = 0; i < resused; i++) {
+ if (!respages[i])
+ continue;
+ put_page(respages[i]);
+ respages[i] = NULL;
+ }
+}
+
+static void
+nfsd4_copy_pages(struct page **topages, struct page **frompages, short count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ topages[i] = frompages[i];
+ if (!topages[i])
+ continue;
+ get_page(topages[i]);
+ }
+}
+
+/*
+ * Cache the reply pages up to NFSD_PAGES_PER_SLOT + 1, clearing the previous
+ * pages. We add a page to NFSD_PAGES_PER_SLOT for the case where the total
+ * length of the XDR response is less than se_fmaxresp_cached
+ * (NFSD_PAGES_PER_SLOT * PAGE_SIZE) but the xdr_buf pages is used for a
+ * of the reply (e.g. readdir).
+ *
+ * Store the base and length of the rq_req.head[0] page
+ * of the NFSv4.1 data, just past the rpc header.
+ */
+void
+nfsd4_store_cache_entry(struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_cache_entry *entry = &resp->cstate.slot->sl_cache_entry;
+ struct svc_rqst *rqstp = resp->rqstp;
+ struct nfsd4_compoundargs *args = rqstp->rq_argp;
+ struct nfsd4_op *op = &args->ops[resp->opcnt];
+ struct kvec *resv = &rqstp->rq_res.head[0];
+
+ dprintk("--> %s entry %p\n", __func__, entry);
+
+ /* Don't cache a failed OP_SEQUENCE. */
+ if (resp->opcnt == 1 && op->opnum == OP_SEQUENCE && resp->cstate.status)
+ return;
+
+ nfsd4_release_respages(entry->ce_respages, entry->ce_resused);
+ entry->ce_opcnt = resp->opcnt;
+ entry->ce_status = resp->cstate.status;
+
+ /*
+ * Don't need a page to cache just the sequence operation - the slot
+ * does this for us!
+ */
+
+ if (nfsd4_not_cached(resp)) {
+ entry->ce_resused = 0;
+ entry->ce_rpchdrlen = 0;
+ dprintk("%s Just cache SEQUENCE. ce_cachethis %d\n", __func__,
+ resp->cstate.slot->sl_cache_entry.ce_cachethis);
+ return;
+ }
+ entry->ce_resused = rqstp->rq_resused;
+ if (entry->ce_resused > NFSD_PAGES_PER_SLOT + 1)
+ entry->ce_resused = NFSD_PAGES_PER_SLOT + 1;
+ nfsd4_copy_pages(entry->ce_respages, rqstp->rq_respages,
+ entry->ce_resused);
+ entry->ce_datav.iov_base = resp->cstate.statp;
+ entry->ce_datav.iov_len = resv->iov_len - ((char *)resp->cstate.statp -
+ (char *)page_address(rqstp->rq_respages[0]));
+ /* Current request rpc header length*/
+ entry->ce_rpchdrlen = (char *)resp->cstate.statp -
+ (char *)page_address(rqstp->rq_respages[0]);
+}
+
+/*
+ * We keep the rpc header, but take the nfs reply from the replycache.
+ */
+static int
+nfsd41_copy_replay_data(struct nfsd4_compoundres *resp,
+ struct nfsd4_cache_entry *entry)
+{
+ struct svc_rqst *rqstp = resp->rqstp;
+ struct kvec *resv = &resp->rqstp->rq_res.head[0];
+ int len;
+
+ /* Current request rpc header length*/
+ len = (char *)resp->cstate.statp -
+ (char *)page_address(rqstp->rq_respages[0]);
+ if (entry->ce_datav.iov_len + len > PAGE_SIZE) {
+ dprintk("%s v41 cached reply too large (%Zd).\n", __func__,
+ entry->ce_datav.iov_len);
+ return 0;
+ }
+ /* copy the cached reply nfsd data past the current rpc header */
+ memcpy((char *)resv->iov_base + len, entry->ce_datav.iov_base,
+ entry->ce_datav.iov_len);
+ resv->iov_len = len + entry->ce_datav.iov_len;
+ return 1;
+}
+
+/*
+ * Keep the first page of the replay. Copy the NFSv4.1 data from the first
+ * cached page. Replace any futher replay pages from the cache.
+ */
+__be32
+nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
+ struct nfsd4_sequence *seq)
+{
+ struct nfsd4_cache_entry *entry = &resp->cstate.slot->sl_cache_entry;
+ __be32 status;
+
+ dprintk("--> %s entry %p\n", __func__, entry);
+
+ /*
+ * If this is just the sequence operation, we did not keep
+ * a page in the cache entry because we can just use the
+ * slot info stored in struct nfsd4_sequence that was checked
+ * against the slot in nfsd4_sequence().
+ *
+ * This occurs when seq->cachethis is FALSE, or when the client
+ * session inactivity timer fires and a solo sequence operation
+ * is sent (lease renewal).
+ */
+ if (seq && nfsd4_not_cached(resp)) {
+ seq->maxslots = resp->cstate.session->se_fnumslots;
+ return nfs_ok;
+ }
+
+ if (!nfsd41_copy_replay_data(resp, entry)) {
+ /*
+ * Not enough room to use the replay rpc header, send the
+ * cached header. Release all the allocated result pages.
+ */
+ svc_free_res_pages(resp->rqstp);
+ nfsd4_copy_pages(resp->rqstp->rq_respages, entry->ce_respages,
+ entry->ce_resused);
+ } else {
+ /* Release all but the first allocated result page */
+
+ resp->rqstp->rq_resused--;
+ svc_free_res_pages(resp->rqstp);
+
+ nfsd4_copy_pages(&resp->rqstp->rq_respages[1],
+ &entry->ce_respages[1],
+ entry->ce_resused - 1);
+ }
+
+ resp->rqstp->rq_resused = entry->ce_resused;
+ resp->opcnt = entry->ce_opcnt;
+ resp->cstate.iovlen = entry->ce_datav.iov_len + entry->ce_rpchdrlen;
+ status = entry->ce_status;
+
+ return status;
+}
+
+/*
+ * Set the exchange_id flags returned by the server.
+ */
+static void
+nfsd4_set_ex_flags(struct nfs4_client *new, struct nfsd4_exchange_id *clid)
+{
+ /* pNFS is not supported */
+ new->cl_exchange_flags |= EXCHGID4_FLAG_USE_NON_PNFS;
+
+ /* Referrals are supported, Migration is not. */
+ new->cl_exchange_flags |= EXCHGID4_FLAG_SUPP_MOVED_REFER;
+
+ /* set the wire flags to return to client. */
+ clid->flags = new->cl_exchange_flags;
+}
+
+__be32
+nfsd4_exchange_id(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd4_exchange_id *exid)
+{
+ struct nfs4_client *unconf, *conf, *new;
+ int status;
+ unsigned int strhashval;
+ char dname[HEXDIR_LEN];
+ nfs4_verifier verf = exid->verifier;
+ u32 ip_addr = svc_addr_in(rqstp)->sin_addr.s_addr;
+
+ dprintk("%s rqstp=%p exid=%p clname.len=%u clname.data=%p "
+ " ip_addr=%u flags %x, spa_how %d\n",
+ __func__, rqstp, exid, exid->clname.len, exid->clname.data,
+ ip_addr, exid->flags, exid->spa_how);
+
+ if (!check_name(exid->clname) || (exid->flags & ~EXCHGID4_FLAG_MASK_A))
+ return nfserr_inval;
+
+ /* Currently only support SP4_NONE */
+ switch (exid->spa_how) {
+ case SP4_NONE:
+ break;
+ case SP4_SSV:
+ return nfserr_encr_alg_unsupp;
+ default:
+ BUG(); /* checked by xdr code */
+ case SP4_MACH_CRED:
+ return nfserr_serverfault; /* no excuse :-/ */
+ }
+
+ status = nfs4_make_rec_clidname(dname, &exid->clname);
+
+ if (status)
+ goto error;
+
+ strhashval = clientstr_hashval(dname);
+
+ nfs4_lock_state();
+ status = nfs_ok;
+
+ conf = find_confirmed_client_by_str(dname, strhashval, true);
+ if (conf) {
+ if (!same_verf(&verf, &conf->cl_verifier)) {
+ /* 18.35.4 case 8 */
+ if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
+ status = nfserr_not_same;
+ goto out;
+ }
+ /* Client reboot: destroy old state */
+ expire_client(conf);
+ goto out_new;
+ }
+ if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) {
+ /* 18.35.4 case 9 */
+ if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
+ status = nfserr_perm;
+ goto out;
+ }
+ expire_client(conf);
+ goto out_new;
+ }
+ if (ip_addr != conf->cl_addr &&
+ !(exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A)) {
+ /* Client collision. 18.35.4 case 3 */
+ status = nfserr_clid_inuse;
+ goto out;
+ }
+ /*
+ * Set bit when the owner id and verifier map to an already
+ * confirmed client id (18.35.3).
+ */
+ exid->flags |= EXCHGID4_FLAG_CONFIRMED_R;
+
+ /*
+ * Falling into 18.35.4 case 2, possible router replay.
+ * Leave confirmed record intact and return same result.
+ */
+ copy_verf(conf, &verf);
+ new = conf;
+ goto out_copy;
+ } else {
+ /* 18.35.4 case 7 */
+ if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
+ status = nfserr_noent;
+ goto out;
+ }
+ }
+
+ unconf = find_unconfirmed_client_by_str(dname, strhashval, true);
+ if (unconf) {
+ /*
+ * Possible retry or client restart. Per 18.35.4 case 4,
+ * a new unconfirmed record should be generated regardless
+ * of whether any properties have changed.
+ */
+ expire_client(unconf);
+ }
+
+out_new:
+ /* Normal case */
+ new = create_client(exid->clname, dname);
+ if (new == NULL) {
+ status = nfserr_resource;
+ goto out;
+ }
+
+ copy_verf(new, &verf);
+ copy_cred(&new->cl_cred, &rqstp->rq_cred);
+ new->cl_addr = ip_addr;
+ gen_clid(new);
+ gen_confirm(new);
+ add_to_unconfirmed(new, strhashval);
+out_copy:
+ exid->clientid.cl_boot = new->cl_clientid.cl_boot;
+ exid->clientid.cl_id = new->cl_clientid.cl_id;
+
+ new->cl_slot.sl_seqid = 0;
+ exid->seqid = 1;
+ nfsd4_set_ex_flags(new, exid);
+
+ dprintk("nfsd4_exchange_id seqid %d flags %x\n",
+ new->cl_slot.sl_seqid, new->cl_exchange_flags);
+ status = nfs_ok;
+
+out:
+ nfs4_unlock_state();
+error:
+ dprintk("nfsd4_exchange_id returns %d\n", ntohl(status));
+ return status;
+}
+
+static int
+check_slot_seqid(u32 seqid, struct nfsd4_slot *slot)
+{
+ dprintk("%s enter. seqid %d slot->sl_seqid %d\n", __func__, seqid,
+ slot->sl_seqid);
+
+ /* The slot is in use, and no response has been sent. */
+ if (slot->sl_inuse) {
+ if (seqid == slot->sl_seqid)
+ return nfserr_jukebox;
+ else
+ return nfserr_seq_misordered;
+ }
+ /* Normal */
+ if (likely(seqid == slot->sl_seqid + 1))
+ return nfs_ok;
+ /* Replay */
+ if (seqid == slot->sl_seqid)
+ return nfserr_replay_cache;
+ /* Wraparound */
+ if (seqid == 1 && (slot->sl_seqid + 1) == 0)
+ return nfs_ok;
+ /* Misordered replay or misordered new request */
+ return nfserr_seq_misordered;
+}
+
+__be32
+nfsd4_create_session(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd4_create_session *cr_ses)
+{
+ u32 ip_addr = svc_addr_in(rqstp)->sin_addr.s_addr;
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ struct nfs4_client *conf, *unconf;
+ struct nfsd4_slot *slot = NULL;
+ int status = 0;
+
+ nfs4_lock_state();
+ unconf = find_unconfirmed_client(&cr_ses->clientid);
+ conf = find_confirmed_client(&cr_ses->clientid);
+
+ if (conf) {
+ slot = &conf->cl_slot;
+ status = check_slot_seqid(cr_ses->seqid, slot);
+ if (status == nfserr_replay_cache) {
+ dprintk("Got a create_session replay! seqid= %d\n",
+ slot->sl_seqid);
+ cstate->slot = slot;
+ cstate->status = status;
+ /* Return the cached reply status */
+ status = nfsd4_replay_cache_entry(resp, NULL);
+ goto out;
+ } else if (cr_ses->seqid != conf->cl_slot.sl_seqid + 1) {
+ status = nfserr_seq_misordered;
+ dprintk("Sequence misordered!\n");
+ dprintk("Expected seqid= %d but got seqid= %d\n",
+ slot->sl_seqid, cr_ses->seqid);
+ goto out;
+ }
+ conf->cl_slot.sl_seqid++;
+ } else if (unconf) {
+ if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
+ (ip_addr != unconf->cl_addr)) {
+ status = nfserr_clid_inuse;
+ goto out;
+ }
+
+ slot = &unconf->cl_slot;
+ status = check_slot_seqid(cr_ses->seqid, slot);
+ if (status) {
+ /* an unconfirmed replay returns misordered */
+ status = nfserr_seq_misordered;
+ goto out;
+ }
+
+ slot->sl_seqid++; /* from 0 to 1 */
+ move_to_confirmed(unconf);
+
+ /*
+ * We do not support RDMA or persistent sessions
+ */
+ cr_ses->flags &= ~SESSION4_PERSIST;
+ cr_ses->flags &= ~SESSION4_RDMA;
+
+ conf = unconf;
+ } else {
+ status = nfserr_stale_clientid;
+ goto out;
+ }
+
+ status = alloc_init_session(rqstp, conf, cr_ses);
+ if (status)
+ goto out;
+
+ memcpy(cr_ses->sessionid.data, conf->cl_sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
+ cr_ses->seqid = slot->sl_seqid;
+
+ slot->sl_inuse = true;
+ cstate->slot = slot;
+ /* Ensure a page is used for the cache */
+ slot->sl_cache_entry.ce_cachethis = 1;
+out:
+ nfs4_unlock_state();
+ dprintk("%s returns %d\n", __func__, ntohl(status));
+ return status;
+}
+
+__be32
+nfsd4_destroy_session(struct svc_rqst *r,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd4_destroy_session *sessionid)
+{
+ struct nfsd4_session *ses;
+ u32 status = nfserr_badsession;
+
+ /* Notes:
+ * - The confirmed nfs4_client->cl_sessionid holds destroyed sessinid
+ * - Should we return nfserr_back_chan_busy if waiting for
+ * callbacks on to-be-destroyed session?
+ * - Do we need to clear any callback info from previous session?
+ */
+
+ dump_sessionid(__func__, &sessionid->sessionid);
+ spin_lock(&sessionid_lock);
+ ses = find_in_sessionid_hashtbl(&sessionid->sessionid);
+ if (!ses) {
+ spin_unlock(&sessionid_lock);
+ goto out;
+ }
+
+ unhash_session(ses);
+ spin_unlock(&sessionid_lock);
+
+ /* wait for callbacks */
+ shutdown_callback_client(ses->se_client);
+ nfsd4_put_session(ses);
+ status = nfs_ok;
+out:
+ dprintk("%s returns %d\n", __func__, ntohl(status));
+ return status;
+}
+
+__be32
+nfsd4_sequence(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd4_sequence *seq)
+{
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ struct nfsd4_session *session;
+ struct nfsd4_slot *slot;
+ int status;
+
+ if (resp->opcnt != 1)
+ return nfserr_sequence_pos;
+
+ spin_lock(&sessionid_lock);
+ status = nfserr_badsession;
+ session = find_in_sessionid_hashtbl(&seq->sessionid);
+ if (!session)
+ goto out;
+
+ status = nfserr_badslot;
+ if (seq->slotid >= session->se_fnumslots)
+ goto out;
+
+ slot = &session->se_slots[seq->slotid];
+ dprintk("%s: slotid %d\n", __func__, seq->slotid);
+
+ status = check_slot_seqid(seq->seqid, slot);
+ if (status == nfserr_replay_cache) {
+ cstate->slot = slot;
+ cstate->session = session;
+ /* Return the cached reply status and set cstate->status
+ * for nfsd4_svc_encode_compoundres processing */
+ status = nfsd4_replay_cache_entry(resp, seq);
+ cstate->status = nfserr_replay_cache;
+ goto replay_cache;
+ }
+ if (status)
+ goto out;
+
+ /* Success! bump slot seqid */
+ slot->sl_inuse = true;
+ slot->sl_seqid = seq->seqid;
+ slot->sl_cache_entry.ce_cachethis = seq->cachethis;
+ /* Always set the cache entry cachethis for solo sequence */
+ if (nfsd4_is_solo_sequence(resp))
+ slot->sl_cache_entry.ce_cachethis = 1;
+
+ cstate->slot = slot;
+ cstate->session = session;
+
+replay_cache:
+ /* Renew the clientid on success and on replay.
+ * Hold a session reference until done processing the compound:
+ * nfsd4_put_session called only if the cstate slot is set.
+ */
+ renew_client(session->se_client);
+ nfsd4_get_session(session);
+out:
+ spin_unlock(&sessionid_lock);
+ dprintk("%s: return %d\n", __func__, ntohl(status));
+ return status;
+}
+
__be32
nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setclientid *setclid)
strhashval = clientstr_hashval(dname);
nfs4_lock_state();
- conf = find_confirmed_client_by_str(dname, strhashval);
+ conf = find_confirmed_client_by_str(dname, strhashval, false);
if (conf) {
/* RFC 3530 14.2.33 CASE 0: */
status = nfserr_clid_inuse;
- if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)
- || conf->cl_addr != sin->sin_addr.s_addr) {
- dprintk("NFSD: setclientid: string in use by clientat %pI4\n",
- &conf->cl_addr);
+ if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) {
+ dprintk("NFSD: setclientid: string in use by client"
+ " at %pI4\n", &conf->cl_addr);
goto out;
}
}
* has a description of SETCLIENTID request processing consisting
* of 5 bullet points, labeled as CASE0 - CASE4 below.
*/
- unconf = find_unconfirmed_client_by_str(dname, strhashval);
+ unconf = find_unconfirmed_client_by_str(dname, strhashval, false);
status = nfserr_resource;
if (!conf) {
/*
unsigned int hash =
clientstr_hashval(unconf->cl_recdir);
conf = find_confirmed_client_by_str(unconf->cl_recdir,
- hash);
+ hash, false);
if (conf) {
nfsd4_remove_clid_dir(conf);
expire_client(conf);
fp = kmem_cache_alloc(file_slab, GFP_KERNEL);
if (fp) {
- kref_init(&fp->fi_ref);
+ atomic_set(&fp->fi_ref, 1);
INIT_LIST_HEAD(&fp->fi_hash);
INIT_LIST_HEAD(&fp->fi_stateids);
INIT_LIST_HEAD(&fp->fi_delegations);
+ spin_lock(&recall_lock);
list_add(&fp->fi_hash, &file_hashtbl[hashval]);
+ spin_unlock(&recall_lock);
fp->fi_inode = igrab(ino);
fp->fi_id = current_fileid++;
fp->fi_had_conflict = false;
return sop;
}
-static void
-release_stateid_lockowners(struct nfs4_stateid *open_stp)
-{
- struct nfs4_stateowner *lock_sop;
-
- while (!list_empty(&open_stp->st_lockowners)) {
- lock_sop = list_entry(open_stp->st_lockowners.next,
- struct nfs4_stateowner, so_perstateid);
- /* list_del(&open_stp->st_lockowners); */
- BUG_ON(lock_sop->so_is_open_owner);
- release_stateowner(lock_sop);
- }
-}
-
-static void
-unhash_stateowner(struct nfs4_stateowner *sop)
-{
- struct nfs4_stateid *stp;
-
- list_del(&sop->so_idhash);
- list_del(&sop->so_strhash);
- if (sop->so_is_open_owner)
- list_del(&sop->so_perclient);
- list_del(&sop->so_perstateid);
- while (!list_empty(&sop->so_stateids)) {
- stp = list_entry(sop->so_stateids.next,
- struct nfs4_stateid, st_perstateowner);
- if (sop->so_is_open_owner)
- release_stateid(stp, OPEN_STATE);
- else
- release_stateid(stp, LOCK_STATE);
- }
-}
-
-static void
-release_stateowner(struct nfs4_stateowner *sop)
-{
- unhash_stateowner(sop);
- list_del(&sop->so_close_lru);
- nfs4_put_stateowner(sop);
-}
-
static inline void
init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) {
struct nfs4_stateowner *sop = open->op_stateowner;
stp->st_stateid.si_generation = 0;
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
- __set_bit(open->op_share_access, &stp->st_access_bmap);
+ __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
+ &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
stp->st_openstp = NULL;
}
-static void
-release_stateid(struct nfs4_stateid *stp, int flags)
-{
- struct file *filp = stp->st_vfs_file;
-
- list_del(&stp->st_hash);
- list_del(&stp->st_perfile);
- list_del(&stp->st_perstateowner);
- if (flags & OPEN_STATE) {
- release_stateid_lockowners(stp);
- stp->st_vfs_file = NULL;
- nfsd_close(filp);
- } else if (flags & LOCK_STATE)
- locks_remove_posix(filp, (fl_owner_t) stp->st_stateowner);
- put_nfs4_file(stp->st_file);
- kmem_cache_free(stateid_slab, stp);
-}
-
static void
move_to_close_lru(struct nfs4_stateowner *sop)
{
unsigned int hashval = file_hashval(ino);
struct nfs4_file *fp;
+ spin_lock(&recall_lock);
list_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) {
if (fp->fi_inode == ino) {
get_nfs4_file(fp);
+ spin_unlock(&recall_lock);
return fp;
}
}
+ spin_unlock(&recall_lock);
return NULL;
}
-static inline int access_valid(u32 x)
+static inline int access_valid(u32 x, u32 minorversion)
{
- if (x < NFS4_SHARE_ACCESS_READ)
+ if ((x & NFS4_SHARE_ACCESS_MASK) < NFS4_SHARE_ACCESS_READ)
return 0;
- if (x > NFS4_SHARE_ACCESS_BOTH)
+ if ((x & NFS4_SHARE_ACCESS_MASK) > NFS4_SHARE_ACCESS_BOTH)
+ return 0;
+ x &= ~NFS4_SHARE_ACCESS_MASK;
+ if (minorversion && x) {
+ if ((x & NFS4_SHARE_WANT_MASK) > NFS4_SHARE_WANT_CANCEL)
+ return 0;
+ if ((x & NFS4_SHARE_WHEN_MASK) > NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED)
+ return 0;
+ x &= ~(NFS4_SHARE_WANT_MASK | NFS4_SHARE_WHEN_MASK);
+ }
+ if (x)
return 0;
return 1;
}
__be32
-nfsd4_process_open1(struct nfsd4_open *open)
+nfsd4_process_open1(struct nfsd4_compound_state *cstate,
+ struct nfsd4_open *open)
{
clientid_t *clientid = &open->op_clientid;
struct nfs4_client *clp = NULL;
return nfserr_expired;
goto renew;
}
+ /* When sessions are used, skip open sequenceid processing */
+ if (nfsd4_has_session(cstate))
+ goto renew;
if (!sop->so_confirmed) {
/* Replace unconfirmed owners without checking for replay. */
clp = sop->so_client;
- release_stateowner(sop);
+ release_openowner(sop);
open->op_stateowner = NULL;
goto renew;
}
__be32
nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
{
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
struct nfs4_file *fp = NULL;
struct inode *ino = current_fh->fh_dentry->d_inode;
struct nfs4_stateid *stp = NULL;
__be32 status;
status = nfserr_inval;
- if (!access_valid(open->op_share_access)
+ if (!access_valid(open->op_share_access, resp->cstate.minorversion)
|| !deny_valid(open->op_share_deny))
goto out;
/*
init_stateid(stp, fp, open);
status = nfsd4_truncate(rqstp, current_fh, open);
if (status) {
- release_stateid(stp, OPEN_STATE);
+ release_open_stateid(stp);
goto out;
}
+ if (nfsd4_has_session(&resp->cstate))
+ update_stateid(&stp->st_stateid);
}
memcpy(&open->op_stateid, &stp->st_stateid, sizeof(stateid_t));
+ if (nfsd4_has_session(&resp->cstate))
+ open->op_stateowner->so_confirmed = 1;
+
/*
* Attempt to hand out a delegation. No error return, because the
* OPEN succeeds even if we fail.
* To finish the open response, we just need to set the rflags.
*/
open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX;
- if (!open->op_stateowner->so_confirmed)
+ if (!open->op_stateowner->so_confirmed &&
+ !nfsd4_has_session(&resp->cstate))
open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM;
return status;
}
dprintk("NFSD: purging unused open stateowner (so_id %d)\n",
sop->so_id);
- release_stateowner(sop);
+ release_openowner(sop);
}
if (clientid_val < NFSD_LAUNDROMAT_MINTIMEOUT)
clientid_val = NFSD_LAUNDROMAT_MINTIMEOUT;
static inline __be32
check_special_stateids(svc_fh *current_fh, stateid_t *stateid, int flags)
{
- /* Trying to call delegreturn with a special stateid? Yuch: */
- if (!(flags & (RD_STATE | WR_STATE)))
- return nfserr_bad_stateid;
- else if (ONE_STATEID(stateid) && (flags & RD_STATE))
+ if (ONE_STATEID(stateid) && (flags & RD_STATE))
return nfs_ok;
else if (locks_in_grace()) {
/* Answer in remaining cases depends on existance of
* that are not able to provide mandatory locking.
*/
static inline int
-io_during_grace_disallowed(struct inode *inode, int flags)
+grace_disallows_io(struct inode *inode)
{
- return locks_in_grace() && (flags & (RD_STATE | WR_STATE))
- && mandatory_lock(inode);
+ return locks_in_grace() && mandatory_lock(inode);
}
-static int check_stateid_generation(stateid_t *in, stateid_t *ref)
+static int check_stateid_generation(stateid_t *in, stateid_t *ref, int flags)
{
+ /*
+ * When sessions are used the stateid generation number is ignored
+ * when it is zero.
+ */
+ if ((flags & HAS_SESSION) && in->si_generation == 0)
+ goto out;
+
/* If the client sends us a stateid from the future, it's buggy: */
if (in->si_generation > ref->si_generation)
return nfserr_bad_stateid;
*/
if (in->si_generation < ref->si_generation)
return nfserr_old_stateid;
+out:
return nfs_ok;
}
+static int is_delegation_stateid(stateid_t *stateid)
+{
+ return stateid->si_fileid == 0;
+}
+
/*
* Checks for stateid operations
*/
__be32
-nfs4_preprocess_stateid_op(struct svc_fh *current_fh, stateid_t *stateid, int flags, struct file **filpp)
+nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
+ stateid_t *stateid, int flags, struct file **filpp)
{
struct nfs4_stateid *stp = NULL;
struct nfs4_delegation *dp = NULL;
- stateid_t *stidp;
+ struct svc_fh *current_fh = &cstate->current_fh;
struct inode *ino = current_fh->fh_dentry->d_inode;
__be32 status;
- dprintk("NFSD: preprocess_stateid_op: stateid = (%08x/%08x/%08x/%08x)\n",
- stateid->si_boot, stateid->si_stateownerid,
- stateid->si_fileid, stateid->si_generation);
if (filpp)
*filpp = NULL;
- if (io_during_grace_disallowed(ino, flags))
+ if (grace_disallows_io(ino))
return nfserr_grace;
+ if (nfsd4_has_session(cstate))
+ flags |= HAS_SESSION;
+
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
return check_special_stateids(current_fh, stateid, flags);
- /* STALE STATEID */
status = nfserr_stale_stateid;
if (STALE_STATEID(stateid))
goto out;
- /* BAD STATEID */
status = nfserr_bad_stateid;
- if (!stateid->si_fileid) { /* delegation stateid */
- if(!(dp = find_delegation_stateid(ino, stateid))) {
- dprintk("NFSD: delegation stateid not found\n");
+ if (is_delegation_stateid(stateid)) {
+ dp = find_delegation_stateid(ino, stateid);
+ if (!dp)
goto out;
- }
- stidp = &dp->dl_stateid;
+ status = check_stateid_generation(stateid, &dp->dl_stateid,
+ flags);
+ if (status)
+ goto out;
+ status = nfs4_check_delegmode(dp, flags);
+ if (status)
+ goto out;
+ renew_client(dp->dl_client);
+ if (filpp)
+ *filpp = dp->dl_vfs_file;
} else { /* open or lock stateid */
- if (!(stp = find_stateid(stateid, flags))) {
- dprintk("NFSD: open or lock stateid not found\n");
+ stp = find_stateid(stateid, flags);
+ if (!stp)
goto out;
- }
- if ((flags & CHECK_FH) && nfs4_check_fh(current_fh, stp))
+ if (nfs4_check_fh(current_fh, stp))
goto out;
if (!stp->st_stateowner->so_confirmed)
goto out;
- stidp = &stp->st_stateid;
- }
- status = check_stateid_generation(stateid, stidp);
- if (status)
- goto out;
- if (stp) {
- if ((status = nfs4_check_openmode(stp,flags)))
+ status = check_stateid_generation(stateid, &stp->st_stateid,
+ flags);
+ if (status)
+ goto out;
+ status = nfs4_check_openmode(stp, flags);
+ if (status)
goto out;
renew_client(stp->st_stateowner->so_client);
if (filpp)
*filpp = stp->st_vfs_file;
- } else {
- if ((status = nfs4_check_delegmode(dp, flags)))
- goto out;
- renew_client(dp->dl_client);
- if (flags & DELEG_RET)
- unhash_delegation(dp);
- if (filpp)
- *filpp = dp->dl_vfs_file;
}
status = nfs_ok;
out:
* Checks for sequence id mutating operations.
*/
static __be32
-nfs4_preprocess_seqid_op(struct svc_fh *current_fh, u32 seqid, stateid_t *stateid, int flags, struct nfs4_stateowner **sopp, struct nfs4_stateid **stpp, struct nfsd4_lock *lock)
+nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
+ stateid_t *stateid, int flags,
+ struct nfs4_stateowner **sopp,
+ struct nfs4_stateid **stpp, struct nfsd4_lock *lock)
{
struct nfs4_stateid *stp;
struct nfs4_stateowner *sop;
+ struct svc_fh *current_fh = &cstate->current_fh;
__be32 status;
dprintk("NFSD: preprocess_seqid_op: seqid=%d "
if (STALE_STATEID(stateid))
return nfserr_stale_stateid;
+
+ if (nfsd4_has_session(cstate))
+ flags |= HAS_SESSION;
+
/*
* We return BAD_STATEID if filehandle doesn't match stateid,
* the confirmed flag is incorrecly set, or the generation
if (lock->lk_is_new) {
if (!sop->so_is_open_owner)
return nfserr_bad_stateid;
- if (!same_clid(&clp->cl_clientid, lockclid))
- return nfserr_bad_stateid;
+ if (!(flags & HAS_SESSION) &&
+ !same_clid(&clp->cl_clientid, lockclid))
+ return nfserr_bad_stateid;
/* stp is the open stateid */
status = nfs4_check_openmode(stp, lkflg);
if (status)
* For the moment, we ignore the possibility of
* generation number wraparound.
*/
- if (seqid != sop->so_seqid)
+ if (!(flags & HAS_SESSION) && seqid != sop->so_seqid)
goto check_replay;
if (sop->so_confirmed && flags & CONFIRM) {
" confirmed yet!\n");
return nfserr_bad_stateid;
}
- status = check_stateid_generation(stateid, &stp->st_stateid);
+ status = check_stateid_generation(stateid, &stp->st_stateid, flags);
if (status)
return status;
renew_client(sop->so_client);
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ if ((status = nfs4_preprocess_seqid_op(cstate,
oc->oc_seqid, &oc->oc_req_stateid,
CONFIRM | OPEN_STATE,
&oc->oc_stateowner, &stp, NULL)))
(int)cstate->current_fh.fh_dentry->d_name.len,
cstate->current_fh.fh_dentry->d_name.name);
- if (!access_valid(od->od_share_access)
+ if (!access_valid(od->od_share_access, cstate->minorversion)
|| !deny_valid(od->od_share_deny))
return nfserr_inval;
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ if ((status = nfs4_preprocess_seqid_op(cstate,
od->od_seqid,
&od->od_stateid,
OPEN_STATE,
nfs4_lock_state();
/* check close_lru for replay */
- if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ if ((status = nfs4_preprocess_seqid_op(cstate,
close->cl_seqid,
&close->cl_stateid,
OPEN_STATE | CLOSE_STATE,
memcpy(&close->cl_stateid, &stp->st_stateid, sizeof(stateid_t));
/* release_stateid() calls nfsd_close() if needed */
- release_stateid(stp, OPEN_STATE);
+ release_open_stateid(stp);
/* place unused nfs4_stateowners on so_close_lru list to be
* released by the laundromat service after the lease period
nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_delegreturn *dr)
{
+ struct nfs4_delegation *dp;
+ stateid_t *stateid = &dr->dr_stateid;
+ struct inode *inode;
__be32 status;
+ int flags = 0;
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
- goto out;
+ return status;
+ inode = cstate->current_fh.fh_dentry->d_inode;
+ if (nfsd4_has_session(cstate))
+ flags |= HAS_SESSION;
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(&cstate->current_fh,
- &dr->dr_stateid, DELEG_RET, NULL);
- nfs4_unlock_state();
+ status = nfserr_bad_stateid;
+ if (ZERO_STATEID(stateid) || ONE_STATEID(stateid))
+ goto out;
+ status = nfserr_stale_stateid;
+ if (STALE_STATEID(stateid))
+ goto out;
+ status = nfserr_bad_stateid;
+ if (!is_delegation_stateid(stateid))
+ goto out;
+ dp = find_delegation_stateid(inode, stateid);
+ if (!dp)
+ goto out;
+ status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
+ if (status)
+ goto out;
+ renew_client(dp->dl_client);
+
+ unhash_delegation(dp);
out:
+ nfs4_unlock_state();
+
return status;
}
struct nfs4_file *fp;
status = nfserr_stale_clientid;
- if (STALE_CLIENTID(&lock->lk_new_clientid))
+ if (!nfsd4_has_session(cstate) &&
+ STALE_CLIENTID(&lock->lk_new_clientid))
goto out;
/* validate and update open stateid and open seqid */
- status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ status = nfs4_preprocess_seqid_op(cstate,
lock->lk_new_open_seqid,
&lock->lk_new_open_stateid,
OPEN_STATE,
goto out;
} else {
/* lock (lock owner + lock stateid) already exists */
- status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ status = nfs4_preprocess_seqid_op(cstate,
lock->lk_old_lock_seqid,
&lock->lk_old_lock_stateid,
LOCK_STATE,
}
out:
if (status && lock->lk_is_new && lock_sop)
- release_stateowner(lock_sop);
+ release_lockowner(lock_sop);
if (lock->lk_replay_owner) {
nfs4_get_stateowner(lock->lk_replay_owner);
cstate->replay_owner = lock->lk_replay_owner;
nfs4_lock_state();
status = nfserr_stale_clientid;
- if (STALE_CLIENTID(&lockt->lt_clientid))
+ if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
goto out;
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ if ((status = nfs4_preprocess_seqid_op(cstate,
locku->lu_seqid,
&locku->lu_stateid,
LOCK_STATE,
/* unhash_stateowner deletes so_perclient only
* for openowners. */
list_del(&sop->so_perclient);
- release_stateowner(sop);
+ release_lockowner(sop);
}
out:
nfs4_unlock_state();
}
int
-nfs4_has_reclaimed_state(const char *name)
+nfs4_has_reclaimed_state(const char *name, bool use_exchange_id)
{
unsigned int strhashval = clientstr_hashval(name);
struct nfs4_client *clp;
- clp = find_confirmed_client_by_str(name, strhashval);
+ clp = find_confirmed_client_by_str(name, strhashval, use_exchange_id);
return clp ? 1 : 0;
}
INIT_LIST_HEAD(&unconf_str_hashtbl[i]);
INIT_LIST_HEAD(&unconf_id_hashtbl[i]);
}
+ for (i = 0; i < SESSION_HASH_SIZE; i++)
+ INIT_LIST_HEAD(&sessionid_hashtbl[i]);
for (i = 0; i < FILE_HASH_SIZE; i++) {
INIT_LIST_HEAD(&file_hashtbl[i]);
}
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/vfs.h>
+#include <linux/utsname.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/clnt.h>
return p;
}
+static int zero_clientid(clientid_t *clid)
+{
+ return (clid->cl_boot == 0) && (clid->cl_id == 0);
+}
+
static int
defer_free(struct nfsd4_compoundargs *argp,
void (*release)(const void *), void *p)
bmval[0] = 0;
bmval[1] = 0;
+ bmval[2] = 0;
READ_BUF(4);
READ32(bmlen);
READ32(bmval[0]);
if (bmlen > 1)
READ32(bmval[1]);
+ if (bmlen > 2)
+ READ32(bmval[2]);
DECODE_TAIL;
}
+static u32 nfsd_attrmask[] = {
+ NFSD_WRITEABLE_ATTRS_WORD0,
+ NFSD_WRITEABLE_ATTRS_WORD1,
+ NFSD_WRITEABLE_ATTRS_WORD2
+};
+
+static u32 nfsd41_ex_attrmask[] = {
+ NFSD_SUPPATTR_EXCLCREAT_WORD0,
+ NFSD_SUPPATTR_EXCLCREAT_WORD1,
+ NFSD_SUPPATTR_EXCLCREAT_WORD2
+};
+
static __be32
-nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr,
- struct nfs4_acl **acl)
+nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
+ struct iattr *iattr, struct nfs4_acl **acl)
{
int expected_len, len = 0;
u32 dummy32;
* According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
* read-only attributes return ERR_INVAL.
*/
- if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
+ if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
+ (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
+ (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
return nfserr_attrnotsupp;
- if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1))
+ if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
+ (bmval[2] & ~writable[2]))
return nfserr_inval;
READ_BUF(4);
goto xdr_error;
}
}
+ BUG_ON(bmval[2]); /* no such writeable attr supported yet */
if (len != expected_len)
goto xdr_error;
if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
return status;
- if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl)))
+ status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask,
+ &create->cr_iattr, &create->cr_acl);
+ if (status)
goto out;
DECODE_TAIL;
READ_BUF(lockt->lt_owner.len);
READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
+ if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
+ return nfserr_inval;
DECODE_TAIL;
}
switch (open->op_createmode) {
case NFS4_CREATE_UNCHECKED:
case NFS4_CREATE_GUARDED:
- if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl)))
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd_attrmask, &open->op_iattr, &open->op_acl);
+ if (status)
goto out;
break;
case NFS4_CREATE_EXCLUSIVE:
READ_BUF(8);
COPYMEM(open->op_verf.data, 8);
break;
+ case NFS4_CREATE_EXCLUSIVE4_1:
+ if (argp->minorversion < 1)
+ goto xdr_error;
+ READ_BUF(8);
+ COPYMEM(open->op_verf.data, 8);
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd41_ex_attrmask, &open->op_iattr,
+ &open->op_acl);
+ if (status)
+ goto out;
+ break;
default:
goto xdr_error;
}
status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
if (status)
return status;
- return nfsd4_decode_fattr(argp, setattr->sa_bmval,
+ return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask,
&setattr->sa_iattr, &setattr->sa_acl);
}
READ_BUF(rlockowner->rl_owner.len);
READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
+ if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
+ return nfserr_inval;
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
+ struct nfsd4_exchange_id *exid)
+{
+ int dummy;
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
+
+ READ_BUF(4);
+ READ32(exid->clname.len);
+
+ READ_BUF(exid->clname.len);
+ SAVEMEM(exid->clname.data, exid->clname.len);
+
+ READ_BUF(4);
+ READ32(exid->flags);
+
+ /* Ignore state_protect4_a */
+ READ_BUF(4);
+ READ32(exid->spa_how);
+ switch (exid->spa_how) {
+ case SP4_NONE:
+ break;
+ case SP4_MACH_CRED:
+ /* spo_must_enforce */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* spo_must_allow */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+ break;
+ case SP4_SSV:
+ /* ssp_ops */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* ssp_hash_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_encr_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_window and ssp_num_gss_handles */
+ READ_BUF(8);
+ READ32(dummy);
+ READ32(dummy);
+ break;
+ default:
+ goto xdr_error;
+ }
+
+ /* Ignore Implementation ID */
+ READ_BUF(4); /* nfs_impl_id4 array length */
+ READ32(dummy);
+
+ if (dummy > 1)
+ goto xdr_error;
+
+ if (dummy == 1) {
+ /* nii_domain */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_name */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_date */
+ READ_BUF(12);
+ p += 3;
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_create_session *sess)
+{
+ DECODE_HEAD;
+
+ u32 dummy;
+ char *machine_name;
+ int i;
+ int nr_secflavs;
+
+ READ_BUF(16);
+ COPYMEM(&sess->clientid, 8);
+ READ32(sess->seqid);
+ READ32(sess->flags);
+
+ /* Fore channel attrs */
+ READ_BUF(28);
+ READ32(dummy); /* headerpadsz is always 0 */
+ READ32(sess->fore_channel.maxreq_sz);
+ READ32(sess->fore_channel.maxresp_sz);
+ READ32(sess->fore_channel.maxresp_cached);
+ READ32(sess->fore_channel.maxops);
+ READ32(sess->fore_channel.maxreqs);
+ READ32(sess->fore_channel.nr_rdma_attrs);
+ if (sess->fore_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->fore_channel.rdma_attrs);
+ } else if (sess->fore_channel.nr_rdma_attrs > 1) {
+ dprintk("Too many fore channel attr bitmaps!\n");
+ goto xdr_error;
+ }
+
+ /* Back channel attrs */
+ READ_BUF(28);
+ READ32(dummy); /* headerpadsz is always 0 */
+ READ32(sess->back_channel.maxreq_sz);
+ READ32(sess->back_channel.maxresp_sz);
+ READ32(sess->back_channel.maxresp_cached);
+ READ32(sess->back_channel.maxops);
+ READ32(sess->back_channel.maxreqs);
+ READ32(sess->back_channel.nr_rdma_attrs);
+ if (sess->back_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->back_channel.rdma_attrs);
+ } else if (sess->back_channel.nr_rdma_attrs > 1) {
+ dprintk("Too many back channel attr bitmaps!\n");
+ goto xdr_error;
+ }
+
+ READ_BUF(8);
+ READ32(sess->callback_prog);
+
+ /* callback_sec_params4 */
+ READ32(nr_secflavs);
+ for (i = 0; i < nr_secflavs; ++i) {
+ READ_BUF(4);
+ READ32(dummy);
+ switch (dummy) {
+ case RPC_AUTH_NULL:
+ /* Nothing to read */
+ break;
+ case RPC_AUTH_UNIX:
+ READ_BUF(8);
+ /* stamp */
+ READ32(dummy);
+
+ /* machine name */
+ READ32(dummy);
+ READ_BUF(dummy);
+ SAVEMEM(machine_name, dummy);
+
+ /* uid, gid */
+ READ_BUF(8);
+ READ32(sess->uid);
+ READ32(sess->gid);
+
+ /* more gids */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ for (i = 0; i < dummy; ++i)
+ READ32(dummy);
+ break;
+ case RPC_AUTH_GSS:
+ dprintk("RPC_AUTH_GSS callback secflavor "
+ "not supported!\n");
+ READ_BUF(8);
+ /* gcbp_service */
+ READ32(dummy);
+ /* gcbp_handle_from_server */
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ /* gcbp_handle_from_client */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ break;
+ default:
+ dprintk("Illegal callback secflavor\n");
+ return nfserr_inval;
+ }
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ DECODE_HEAD;
+ READ_BUF(NFS4_MAX_SESSIONID_LEN);
+ COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
+ struct nfsd4_sequence *seq)
+{
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
+ COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ READ32(seq->seqid);
+ READ32(seq->slotid);
+ READ32(seq->maxslots);
+ READ32(seq->cachethis);
+
DECODE_TAIL;
}
static __be32
nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
{
- return nfserr_opnotsupp;
+ return nfserr_notsupp;
}
typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
[OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
[OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
[OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
- [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop,
[OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
[OP_READ] = (nfsd4_dec)nfsd4_decode_read,
[OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
[OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
};
+static nfsd4_dec nfsd41_dec_ops[] = {
+ [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp,
+
+ /* new operations for NFSv4.1 */
+ [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id,
+ [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session,
+ [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session,
+ [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence,
+ [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp,
+};
+
struct nfsd4_minorversion_ops {
nfsd4_dec *decoders;
int nops;
static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
[0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
+ [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) },
};
static __be32
{
u32 bmval0 = bmval[0];
u32 bmval1 = bmval[1];
+ u32 bmval2 = bmval[2];
struct kstat stat;
struct svc_fh tempfh;
struct kstatfs statfs;
int err;
int aclsupport = 0;
struct nfs4_acl *acl = NULL;
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ u32 minorversion = resp->cstate.minorversion;
BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
- BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
- BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
+ BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
+ BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
+ BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
if (exp->ex_fslocs.migrated) {
+ BUG_ON(bmval[2]);
status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
if (status)
goto out;
if ((buflen -= 16) < 0)
goto out_resource;
- WRITE32(2);
- WRITE32(bmval0);
- WRITE32(bmval1);
+ if (unlikely(bmval2)) {
+ WRITE32(3);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ WRITE32(bmval2);
+ } else if (likely(bmval1)) {
+ WRITE32(2);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ } else {
+ WRITE32(1);
+ WRITE32(bmval0);
+ }
attrlenp = p++; /* to be backfilled later */
if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
- u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0;
+ u32 word0 = nfsd_suppattrs0(minorversion);
+ u32 word1 = nfsd_suppattrs1(minorversion);
+ u32 word2 = nfsd_suppattrs2(minorversion);
+
if ((buflen -= 12) < 0)
goto out_resource;
if (!aclsupport)
word0 &= ~FATTR4_WORD0_ACL;
if (!exp->ex_fslocs.locations)
word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
- WRITE32(2);
- WRITE32(word0);
- WRITE32(NFSD_SUPPORTED_ATTRS_WORD1);
+ if (!word2) {
+ WRITE32(2);
+ WRITE32(word0);
+ WRITE32(word1);
+ } else {
+ WRITE32(3);
+ WRITE32(word0);
+ WRITE32(word1);
+ WRITE32(word2);
+ }
}
if (bmval0 & FATTR4_WORD0_TYPE) {
if ((buflen -= 4) < 0)
}
WRITE64(stat.ino);
}
+ if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
+ WRITE32(3);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ }
+
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
*countp = p - buffer;
status = nfs_ok;
return nfserr;
}
+static __be32
+nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_exchange_id *exid)
+{
+ ENCODE_HEAD;
+ char *major_id;
+ char *server_scope;
+ int major_id_sz;
+ int server_scope_sz;
+ uint64_t minor_id = 0;
+
+ if (nfserr)
+ return nfserr;
+
+ major_id = utsname()->nodename;
+ major_id_sz = strlen(major_id);
+ server_scope = utsname()->nodename;
+ server_scope_sz = strlen(server_scope);
+
+ RESERVE_SPACE(
+ 8 /* eir_clientid */ +
+ 4 /* eir_sequenceid */ +
+ 4 /* eir_flags */ +
+ 4 /* spr_how (SP4_NONE) */ +
+ 8 /* so_minor_id */ +
+ 4 /* so_major_id.len */ +
+ (XDR_QUADLEN(major_id_sz) * 4) +
+ 4 /* eir_server_scope.len */ +
+ (XDR_QUADLEN(server_scope_sz) * 4) +
+ 4 /* eir_server_impl_id.count (0) */);
+
+ WRITEMEM(&exid->clientid, 8);
+ WRITE32(exid->seqid);
+ WRITE32(exid->flags);
+
+ /* state_protect4_r. Currently only support SP4_NONE */
+ BUG_ON(exid->spa_how != SP4_NONE);
+ WRITE32(exid->spa_how);
+
+ /* The server_owner struct */
+ WRITE64(minor_id); /* Minor id */
+ /* major id */
+ WRITE32(major_id_sz);
+ WRITEMEM(major_id, major_id_sz);
+
+ /* Server scope */
+ WRITE32(server_scope_sz);
+ WRITEMEM(server_scope, server_scope_sz);
+
+ /* Implementation id */
+ WRITE32(0); /* zero length nfs_impl_id4 array */
+ ADJUST_ARGS();
+ return 0;
+}
+
+static __be32
+nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_create_session *sess)
+{
+ ENCODE_HEAD;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(24);
+ WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ WRITE32(sess->seqid);
+ WRITE32(sess->flags);
+ ADJUST_ARGS();
+
+ RESERVE_SPACE(28);
+ WRITE32(0); /* headerpadsz */
+ WRITE32(sess->fore_channel.maxreq_sz);
+ WRITE32(sess->fore_channel.maxresp_sz);
+ WRITE32(sess->fore_channel.maxresp_cached);
+ WRITE32(sess->fore_channel.maxops);
+ WRITE32(sess->fore_channel.maxreqs);
+ WRITE32(sess->fore_channel.nr_rdma_attrs);
+ ADJUST_ARGS();
+
+ if (sess->fore_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->fore_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+
+ RESERVE_SPACE(28);
+ WRITE32(0); /* headerpadsz */
+ WRITE32(sess->back_channel.maxreq_sz);
+ WRITE32(sess->back_channel.maxresp_sz);
+ WRITE32(sess->back_channel.maxresp_cached);
+ WRITE32(sess->back_channel.maxops);
+ WRITE32(sess->back_channel.maxreqs);
+ WRITE32(sess->back_channel.nr_rdma_attrs);
+ ADJUST_ARGS();
+
+ if (sess->back_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->back_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+ return 0;
+}
+
+static __be32
+nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ return nfserr;
+}
+
+__be32
+nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_sequence *seq)
+{
+ ENCODE_HEAD;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
+ WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ WRITE32(seq->seqid);
+ WRITE32(seq->slotid);
+ WRITE32(seq->maxslots);
+ /*
+ * FIXME: for now:
+ * target_maxslots = maxslots
+ * status_flags = 0
+ */
+ WRITE32(seq->maxslots);
+ WRITE32(0);
+
+ ADJUST_ARGS();
+ return 0;
+}
+
static __be32
nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
{
typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
+/*
+ * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
+ * since we don't need to filter out obsolete ops as this is
+ * done in the decoding phase.
+ */
static nfsd4_enc nfsd4_enc_ops[] = {
[OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
[OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
[OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
[OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
[OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
+
+ /* NFSv4.1 operations */
+ [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
+ [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
+ [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
+ [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
+ [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
};
+/*
+ * Calculate the total amount of memory that the compound response has taken
+ * after encoding the current operation.
+ *
+ * pad: add on 8 bytes for the next operation's op_code and status so that
+ * there is room to cache a failure on the next operation.
+ *
+ * Compare this length to the session se_fmaxresp_cached.
+ *
+ * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
+ * will be at least a page and will therefore hold the xdr_buf head.
+ */
+static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
+{
+ int status = 0;
+ struct xdr_buf *xb = &resp->rqstp->rq_res;
+ struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+ struct nfsd4_session *session = NULL;
+ struct nfsd4_slot *slot = resp->cstate.slot;
+ u32 length, tlen = 0, pad = 8;
+
+ if (!nfsd4_has_session(&resp->cstate))
+ return status;
+
+ session = resp->cstate.session;
+ if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0)
+ return status;
+
+ if (resp->opcnt >= args->opcnt)
+ pad = 0; /* this is the last operation */
+
+ if (xb->page_len == 0) {
+ length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
+ } else {
+ if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
+ tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
+
+ length = xb->head[0].iov_len + xb->page_len + tlen + pad;
+ }
+ dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
+ length, xb->page_len, tlen, pad);
+
+ if (length <= session->se_fmaxresp_cached)
+ return status;
+ else
+ return nfserr_rep_too_big_to_cache;
+}
+
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
!nfsd4_enc_ops[op->opnum]);
op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
+ /* nfsd4_check_drc_limit guarantees enough room for error status */
+ if (!op->status && nfsd4_check_drc_limit(resp))
+ op->status = nfserr_rep_too_big_to_cache;
status:
/*
* Note: We write the status directly, instead of using WRITE32(),
iov = &rqstp->rq_res.head[0];
iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
BUG_ON(iov->iov_len > PAGE_SIZE);
+ if (nfsd4_has_session(&resp->cstate)) {
+ if (resp->cstate.status == nfserr_replay_cache &&
+ !nfsd4_not_cached(resp)) {
+ iov->iov_len = resp->cstate.iovlen;
+ } else {
+ nfsd4_store_cache_entry(resp);
+ dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
+ resp->cstate.slot->sl_inuse = 0;
+ }
+ if (resp->cstate.session)
+ nfsd4_put_session(resp->cstate.session);
+ }
return 1;
}
NFSD_FO_UnlockFS,
NFSD_Threads,
NFSD_Pool_Threads,
+ NFSD_Pool_Stats,
NFSD_Versions,
NFSD_Ports,
NFSD_MaxBlkSize,
.owner = THIS_MODULE,
};
+extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
+
+static struct file_operations pool_stats_operations = {
+ .open = nfsd_pool_stats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+ .owner = THIS_MODULE,
+};
+
/*----------------------------------------------------------------------------*/
/*
* payload - write methods
static ssize_t __write_versions(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
- char *vers, sign;
+ char *vers, *minorp, sign;
int len, num;
+ unsigned minor;
ssize_t tlen = 0;
char *sep;
do {
sign = *vers;
if (sign == '+' || sign == '-')
- num = simple_strtol((vers+1), NULL, 0);
+ num = simple_strtol((vers+1), &minorp, 0);
else
- num = simple_strtol(vers, NULL, 0);
+ num = simple_strtol(vers, &minorp, 0);
+ if (*minorp == '.') {
+ if (num < 4)
+ return -EINVAL;
+ minor = simple_strtoul(minorp+1, NULL, 0);
+ if (minor == 0)
+ return -EINVAL;
+ if (nfsd_minorversion(minor, sign == '-' ?
+ NFSD_CLEAR : NFSD_SET) < 0)
+ return -EINVAL;
+ goto next;
+ }
switch(num) {
case 2:
case 3:
default:
return -EINVAL;
}
+ next:
vers += len + 1;
tlen += len;
} while ((len = qword_get(&mesg, vers, size)) > 0);
num);
sep = " ";
}
+ if (nfsd_vers(4, NFSD_AVAIL))
+ for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++)
+ len += sprintf(buf+len, " %c4.%u",
+ (nfsd_vers(4, NFSD_TEST) &&
+ nfsd_minorversion(minor, NFSD_TEST)) ?
+ '+' : '-',
+ minor);
len += sprintf(buf+len, "\n");
return len;
}
[NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
+ [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
{
__be32 nfserr;
int stable = 1;
+ unsigned long cnt = argp->len;
dprintk("nfsd: WRITE %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
argp->offset,
rqstp->rq_vec, argp->vlen,
- argp->len,
+ &cnt,
&stable);
return nfsd_return_attrs(nfserr, resp);
}
#include <linux/freezer.h>
#include <linux/fs_struct.h>
#include <linux/kthread.h>
+#include <linux/swap.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/stats.h>
extern struct svc_program nfsd_program;
static int nfsd(void *vrqstp);
struct timeval nfssvc_boot;
-static atomic_t nfsd_busy;
-static unsigned long nfsd_last_call;
-static DEFINE_SPINLOCK(nfsd_call_lock);
/*
* nfsd_mutex protects nfsd_serv -- both the pointer itself and the members
};
+u32 nfsd_supported_minorversion;
+
int nfsd_vers(int vers, enum vers_op change)
{
if (vers < NFSD_MINVERS || vers >= NFSD_NRVERS)
}
return 0;
}
+
+int nfsd_minorversion(u32 minorversion, enum vers_op change)
+{
+ if (minorversion > NFSD_SUPPORTED_MINOR_VERSION)
+ return -1;
+ switch(change) {
+ case NFSD_SET:
+ nfsd_supported_minorversion = minorversion;
+ break;
+ case NFSD_CLEAR:
+ if (minorversion == 0)
+ return -1;
+ nfsd_supported_minorversion = minorversion - 1;
+ break;
+ case NFSD_TEST:
+ return minorversion <= nfsd_supported_minorversion;
+ case NFSD_AVAIL:
+ return minorversion <= NFSD_SUPPORTED_MINOR_VERSION;
+ }
+ return 0;
+}
+
/*
* Maximum number of nfsd processes
*/
}
}
+/*
+ * Each session guarantees a negotiated per slot memory cache for replies
+ * which in turn consumes memory beyond the v2/v3/v4.0 server. A dedicated
+ * NFSv4.1 server might want to use more memory for a DRC than a machine
+ * with mutiple services.
+ *
+ * Impose a hard limit on the number of pages for the DRC which varies
+ * according to the machines free pages. This is of course only a default.
+ *
+ * For now this is a #defined shift which could be under admin control
+ * in the future.
+ */
+static void set_max_drc(void)
+{
+ /* The percent of nr_free_buffer_pages used by the V4.1 server DRC */
+ #define NFSD_DRC_SIZE_SHIFT 7
+ nfsd_serv->sv_drc_max_pages = nr_free_buffer_pages()
+ >> NFSD_DRC_SIZE_SHIFT;
+ nfsd_serv->sv_drc_pages_used = 0;
+ dprintk("%s svc_drc_max_pages %u\n", __func__,
+ nfsd_serv->sv_drc_max_pages);
+}
int nfsd_create_serv(void)
{
nfsd_max_blksize /= 2;
}
- atomic_set(&nfsd_busy, 0);
nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
nfsd_last_thread, nfsd, THIS_MODULE);
if (nfsd_serv == NULL)
err = -ENOMEM;
+ else
+ set_max_drc();
do_gettimeofday(&nfssvc_boot); /* record boot time */
return err;
return error;
}
-static inline void
-update_thread_usage(int busy_threads)
-{
- unsigned long prev_call;
- unsigned long diff;
- int decile;
-
- spin_lock(&nfsd_call_lock);
- prev_call = nfsd_last_call;
- nfsd_last_call = jiffies;
- decile = busy_threads*10/nfsdstats.th_cnt;
- if (decile>0 && decile <= 10) {
- diff = nfsd_last_call - prev_call;
- if ( (nfsdstats.th_usage[decile-1] += diff) >= NFSD_USAGE_WRAP)
- nfsdstats.th_usage[decile-1] -= NFSD_USAGE_WRAP;
- if (decile == 10)
- nfsdstats.th_fullcnt++;
- }
- spin_unlock(&nfsd_call_lock);
-}
/*
* This is the NFS server kernel thread
continue;
}
- update_thread_usage(atomic_read(&nfsd_busy));
- atomic_inc(&nfsd_busy);
/* Lock the export hash tables for reading. */
exp_readlock();
/* Unlock export hash tables */
exp_readunlock();
- update_thread_usage(atomic_read(&nfsd_busy));
- atomic_dec(&nfsd_busy);
}
/* Clear signals before calling svc_exit_thread() */
+ rqstp->rq_res.head[0].iov_len;
rqstp->rq_res.head[0].iov_len += sizeof(__be32);
+ /* NFSv4.1 DRC requires statp */
+ if (rqstp->rq_vers == 4)
+ nfsd4_set_statp(rqstp, statp);
+
/* Now call the procedure handler, and encode NFS status. */
nfserr = proc->pc_func(rqstp, rqstp->rq_argp, rqstp->rq_resp);
nfserr = map_new_errors(rqstp->rq_vers, nfserr);
nfsd_cache_update(rqstp, proc->pc_cachetype, statp + 1);
return 1;
}
+
+int nfsd_pool_stats_open(struct inode *inode, struct file *file)
+{
+ if (nfsd_serv == NULL)
+ return -ENODEV;
+ return svc_pool_stats_open(nfsd_serv, file);
+}
}
/* Revoke setuid/setgid on chown */
- if (((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) ||
- ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid)) {
+ if (!S_ISDIR(inode->i_mode) &&
+ (((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) ||
+ ((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid))) {
iap->ia_valid |= ATTR_KILL_PRIV;
if (iap->ia_valid & ATTR_MODE) {
/* we're setting mode too, just clear the s*id bits */
static __be32
nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen,
- unsigned long cnt, int *stablep)
+ unsigned long *cnt, int *stablep)
{
struct svc_export *exp;
struct dentry *dentry;
err = nfserr_perm;
if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
- (!lock_may_write(file->f_path.dentry->d_inode, offset, cnt)))
+ (!lock_may_write(file->f_path.dentry->d_inode, offset, *cnt)))
goto out;
#endif
host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
set_fs(oldfs);
if (host_err >= 0) {
- nfsdstats.io_write += cnt;
+ nfsdstats.io_write += host_err;
fsnotify_modify(file->f_path.dentry);
}
}
dprintk("nfsd: write complete host_err=%d\n", host_err);
- if (host_err >= 0)
+ if (host_err >= 0) {
err = 0;
- else
+ *cnt = host_err;
+ } else
err = nfserrno(host_err);
out:
return err;
*/
__be32
nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
- loff_t offset, struct kvec *vec, int vlen, unsigned long cnt,
+ loff_t offset, struct kvec *vec, int vlen, unsigned long *cnt,
int *stablep)
{
__be32 err = 0;
return 0;
}
+/* HPUX client sometimes creates a file in mode 000, and sets size to 0.
+ * setting size to 0 may fail for some specific file systems by the permission
+ * checking which requires WRITE permission but the mode is 000.
+ * we ignore the resizing(to 0) on the just new created file, since the size is
+ * 0 after file created.
+ *
+ * call this only after vfs_create() is called.
+ * */
+static void
+nfsd_check_ignore_resizing(struct iattr *iap)
+{
+ if ((iap->ia_valid & ATTR_SIZE) && (iap->ia_size == 0))
+ iap->ia_valid &= ~ATTR_SIZE;
+}
+
/*
* Create a file (regular, directory, device, fifo); UNIX sockets
* not yet implemented.
switch (type) {
case S_IFREG:
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
+ if (!host_err)
+ nfsd_check_ignore_resizing(iap);
break;
case S_IFDIR:
host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
/* setattr will sync the child (or not) */
}
+ nfsd_check_ignore_resizing(iap);
+
if (createmode == NFS3_CREATE_EXCLUSIVE) {
/* Cram the verifier into atime/mtime */
iap->ia_valid = ATTR_MTIME|ATTR_ATIME
#define NLM_MAXCOOKIELEN 32
#define NLM_MAXSTRLEN 1024
-#define nlm_granted __constant_htonl(NLM_LCK_GRANTED)
-#define nlm_lck_denied __constant_htonl(NLM_LCK_DENIED)
-#define nlm_lck_denied_nolocks __constant_htonl(NLM_LCK_DENIED_NOLOCKS)
-#define nlm_lck_blocked __constant_htonl(NLM_LCK_BLOCKED)
-#define nlm_lck_denied_grace_period __constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD)
+#define nlm_granted cpu_to_be32(NLM_LCK_GRANTED)
+#define nlm_lck_denied cpu_to_be32(NLM_LCK_DENIED)
+#define nlm_lck_denied_nolocks cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
+#define nlm_lck_blocked cpu_to_be32(NLM_LCK_BLOCKED)
+#define nlm_lck_denied_grace_period cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)
-#define nlm_drop_reply __constant_htonl(30000)
+#define nlm_drop_reply cpu_to_be32(30000)
/* Lock info passed via NLM */
struct nlm_lock {
#include <linux/lockd/xdr.h>
/* error codes new to NLMv4 */
-#define nlm4_deadlock __constant_htonl(NLM_DEADLCK)
-#define nlm4_rofs __constant_htonl(NLM_ROFS)
-#define nlm4_stale_fh __constant_htonl(NLM_STALE_FH)
-#define nlm4_fbig __constant_htonl(NLM_FBIG)
-#define nlm4_failed __constant_htonl(NLM_FAILED)
+#define nlm4_deadlock cpu_to_be32(NLM_DEADLCK)
+#define nlm4_rofs cpu_to_be32(NLM_ROFS)
+#define nlm4_stale_fh cpu_to_be32(NLM_STALE_FH)
+#define nlm4_fbig cpu_to_be32(NLM_FBIG)
+#define nlm4_failed cpu_to_be32(NLM_FAILED)
NFSERR_FILE_OPEN = 10046, /* v4 */
NFSERR_ADMIN_REVOKED = 10047, /* v4 */
NFSERR_CB_PATH_DOWN = 10048, /* v4 */
- NFSERR_REPLAY_ME = 10049 /* v4 */
};
/* NFSv2 file types - beware, these are not the same in NFSv3 */
#define NFS4_FHSIZE 128
#define NFS4_MAXPATHLEN PATH_MAX
#define NFS4_MAXNAMLEN NAME_MAX
+#define NFS4_MAX_SESSIONID_LEN 16
#define NFS4_ACCESS_READ 0x0001
#define NFS4_ACCESS_LOOKUP 0x0002
#define NFS4_OPEN_RESULT_CONFIRM 0x0002
#define NFS4_OPEN_RESULT_LOCKTYPE_POSIX 0x0004
+#define NFS4_SHARE_ACCESS_MASK 0x000F
#define NFS4_SHARE_ACCESS_READ 0x0001
#define NFS4_SHARE_ACCESS_WRITE 0x0002
#define NFS4_SHARE_ACCESS_BOTH 0x0003
#define NFS4_SHARE_DENY_WRITE 0x0002
#define NFS4_SHARE_DENY_BOTH 0x0003
+/* nfs41 */
+#define NFS4_SHARE_WANT_MASK 0xFF00
+#define NFS4_SHARE_WANT_NO_PREFERENCE 0x0000
+#define NFS4_SHARE_WANT_READ_DELEG 0x0100
+#define NFS4_SHARE_WANT_WRITE_DELEG 0x0200
+#define NFS4_SHARE_WANT_ANY_DELEG 0x0300
+#define NFS4_SHARE_WANT_NO_DELEG 0x0400
+#define NFS4_SHARE_WANT_CANCEL 0x0500
+
+#define NFS4_SHARE_WHEN_MASK 0xF0000
+#define NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL 0x10000
+#define NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED 0x20000
+
#define NFS4_SET_TO_SERVER_TIME 0
#define NFS4_SET_TO_CLIENT_TIME 1
#define NFS4_ACE_GENERIC_EXECUTE 0x001200A0
#define NFS4_ACE_MASK_ALL 0x001F01FF
+#define EXCHGID4_FLAG_SUPP_MOVED_REFER 0x00000001
+#define EXCHGID4_FLAG_SUPP_MOVED_MIGR 0x00000002
+#define EXCHGID4_FLAG_USE_NON_PNFS 0x00010000
+#define EXCHGID4_FLAG_USE_PNFS_MDS 0x00020000
+#define EXCHGID4_FLAG_USE_PNFS_DS 0x00040000
+#define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A 0x40000000
+#define EXCHGID4_FLAG_CONFIRMED_R 0x80000000
+/*
+ * Since the validity of these bits depends on whether
+ * they're set in the argument or response, have separate
+ * invalid flag masks for arg (_A) and resp (_R).
+ */
+#define EXCHGID4_FLAG_MASK_A 0x40070003
+#define EXCHGID4_FLAG_MASK_R 0x80070003
+
+#define SEQ4_STATUS_CB_PATH_DOWN 0x00000001
+#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING 0x00000002
+#define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRED 0x00000004
+#define SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED 0x00000008
+#define SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED 0x00000010
+#define SEQ4_STATUS_ADMIN_STATE_REVOKED 0x00000020
+#define SEQ4_STATUS_RECALLABLE_STATE_REVOKED 0x00000040
+#define SEQ4_STATUS_LEASE_MOVED 0x00000080
+#define SEQ4_STATUS_RESTART_RECLAIM_NEEDED 0x00000100
+
#define NFS4_MAX_UINT64 (~(u64)0)
enum nfs4_acl_whotype {
OP_VERIFY = 37,
OP_WRITE = 38,
OP_RELEASE_LOCKOWNER = 39,
+
+ /* nfs41 */
+ OP_BACKCHANNEL_CTL = 40,
+ OP_BIND_CONN_TO_SESSION = 41,
+ OP_EXCHANGE_ID = 42,
+ OP_CREATE_SESSION = 43,
+ OP_DESTROY_SESSION = 44,
+ OP_FREE_STATEID = 45,
+ OP_GET_DIR_DELEGATION = 46,
+ OP_GETDEVICEINFO = 47,
+ OP_GETDEVICELIST = 48,
+ OP_LAYOUTCOMMIT = 49,
+ OP_LAYOUTGET = 50,
+ OP_LAYOUTRETURN = 51,
+ OP_SECINFO_NO_NAME = 52,
+ OP_SEQUENCE = 53,
+ OP_SET_SSV = 54,
+ OP_TEST_STATEID = 55,
+ OP_WANT_DELEGATION = 56,
+ OP_DESTROY_CLIENTID = 57,
+ OP_RECLAIM_COMPLETE = 58,
+
OP_ILLEGAL = 10044,
};
NFS4ERR_DEADLOCK = 10045,
NFS4ERR_FILE_OPEN = 10046,
NFS4ERR_ADMIN_REVOKED = 10047,
- NFS4ERR_CB_PATH_DOWN = 10048
+ NFS4ERR_CB_PATH_DOWN = 10048,
+
+ /* nfs41 */
+ NFS4ERR_BADIOMODE = 10049,
+ NFS4ERR_BADLAYOUT = 10050,
+ NFS4ERR_BAD_SESSION_DIGEST = 10051,
+ NFS4ERR_BADSESSION = 10052,
+ NFS4ERR_BADSLOT = 10053,
+ NFS4ERR_COMPLETE_ALREADY = 10054,
+ NFS4ERR_CONN_NOT_BOUND_TO_SESSION = 10055,
+ NFS4ERR_DELEG_ALREADY_WANTED = 10056,
+ NFS4ERR_BACK_CHAN_BUSY = 10057, /* backchan reqs outstanding */
+ NFS4ERR_LAYOUTTRYLATER = 10058,
+ NFS4ERR_LAYOUTUNAVAILABLE = 10059,
+ NFS4ERR_NOMATCHING_LAYOUT = 10060,
+ NFS4ERR_RECALLCONFLICT = 10061,
+ NFS4ERR_UNKNOWN_LAYOUTTYPE = 10062,
+ NFS4ERR_SEQ_MISORDERED = 10063, /* unexpected seq.id in req */
+ NFS4ERR_SEQUENCE_POS = 10064, /* [CB_]SEQ. op not 1st op */
+ NFS4ERR_REQ_TOO_BIG = 10065, /* request too big */
+ NFS4ERR_REP_TOO_BIG = 10066, /* reply too big */
+ NFS4ERR_REP_TOO_BIG_TO_CACHE = 10067, /* rep. not all cached */
+ NFS4ERR_RETRY_UNCACHED_REP = 10068, /* retry & rep. uncached */
+ NFS4ERR_UNSAFE_COMPOUND = 10069, /* retry/recovery too hard */
+ NFS4ERR_TOO_MANY_OPS = 10070, /* too many ops in [CB_]COMP */
+ NFS4ERR_OP_NOT_IN_SESSION = 10071, /* op needs [CB_]SEQ. op */
+ NFS4ERR_HASH_ALG_UNSUPP = 10072, /* hash alg. not supp. */
+ /* Error 10073 is unused. */
+ NFS4ERR_CLIENTID_BUSY = 10074, /* clientid has state */
+ NFS4ERR_PNFS_IO_HOLE = 10075, /* IO to _SPARSE file hole */
+ NFS4ERR_SEQ_FALSE_RETRY = 10076, /* retry not origional */
+ NFS4ERR_BAD_HIGH_SLOT = 10077, /* sequence arg bad */
+ NFS4ERR_DEADSESSION = 10078, /* persistent session dead */
+ NFS4ERR_ENCR_ALG_UNSUPP = 10079, /* SSV alg mismatch */
+ NFS4ERR_PNFS_NO_LAYOUT = 10080, /* direct I/O with no layout */
+ NFS4ERR_NOT_ONLY_OP = 10081, /* bad compound */
+ NFS4ERR_WRONG_CRED = 10082, /* permissions:state change */
+ NFS4ERR_WRONG_TYPE = 10083, /* current operation mismatch */
+ NFS4ERR_DIRDELEG_UNAVAIL = 10084, /* no directory delegation */
+ NFS4ERR_REJECT_DELEG = 10085, /* on callback */
+ NFS4ERR_RETURNCONFLICT = 10086, /* outstanding layoutreturn */
+ NFS4ERR_DELEG_REVOKED = 10087, /* deleg./layout revoked */
};
/*
enum createmode4 {
NFS4_CREATE_UNCHECKED = 0,
NFS4_CREATE_GUARDED = 1,
- NFS4_CREATE_EXCLUSIVE = 2
+ NFS4_CREATE_EXCLUSIVE = 2,
+ /*
+ * New to NFSv4.1. If session is persistent,
+ * GUARDED4 MUST be used. Otherwise, use
+ * EXCLUSIVE4_1 instead of EXCLUSIVE4.
+ */
+ NFS4_CREATE_EXCLUSIVE4_1 = 3
};
enum limit_by4 {
#define FATTR4_WORD0_UNIQUE_HANDLES (1UL << 9)
#define FATTR4_WORD0_LEASE_TIME (1UL << 10)
#define FATTR4_WORD0_RDATTR_ERROR (1UL << 11)
+/* Mandatory in NFSv4.1 */
+#define FATTR4_WORD2_SUPPATTR_EXCLCREAT (1UL << 11)
/* Recommended Attributes */
#define FATTR4_WORD0_ACL (1UL << 12)
NFSPROC4_CLNT_GETACL,
NFSPROC4_CLNT_SETACL,
NFSPROC4_CLNT_FS_LOCATIONS,
+
+ /* nfs41 */
+ NFSPROC4_CLNT_EXCHANGE_ID,
+ NFSPROC4_CLNT_CREATE_SESSION,
+ NFSPROC4_CLNT_DESTROY_SESSION,
+ NFSPROC4_CLNT_SEQUENCE,
+ NFSPROC4_CLNT_GET_LEASE_TIME,
+};
+
+/* nfs41 types */
+struct nfs4_sessionid {
+ unsigned char data[NFS4_MAX_SESSIONID_LEN];
+};
+
+/* Create Session Flags */
+#define SESSION4_PERSIST 0x001
+#define SESSION4_BACK_CHAN 0x002
+#define SESSION4_RDMA 0x004
+
+enum state_protect_how4 {
+ SP4_NONE = 0,
+ SP4_MACH_CRED = 1,
+ SP4_SSV = 2
};
#endif
int nfsd_cache_lookup(struct svc_rqst *, int);
void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
+#ifdef CONFIG_NFSD_V4
+void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp);
+#else /* CONFIG_NFSD_V4 */
+static inline void nfsd4_set_statp(struct svc_rqst *rqstp, __be32 *statp)
+{
+}
+#endif /* CONFIG_NFSD_V4 */
+
#endif /* NFSCACHE_H */
/*
* nfsd version
*/
-#define NFSD_SUPPORTED_MINOR_VERSION 0
+#define NFSD_SUPPORTED_MINOR_VERSION 1
/*
* Flags for nfsd_permission
extern struct svc_program nfsd_program;
extern struct svc_version nfsd_version2, nfsd_version3,
nfsd_version4;
+extern u32 nfsd_supported_minorversion;
extern struct mutex nfsd_mutex;
extern struct svc_serv *nfsd_serv;
__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
loff_t, struct kvec *, int, unsigned long *);
__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
- loff_t, struct kvec *,int, unsigned long, int *);
+ loff_t, struct kvec *,int, unsigned long *, int *);
__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
char *, int *);
__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
int nfsd_vers(int vers, enum vers_op change);
+int nfsd_minorversion(u32 minorversion, enum vers_op change);
void nfsd_reset_versions(void);
int nfsd_create_serv(void);
/*
* These macros provide pre-xdr'ed values for faster operation.
*/
-#define nfs_ok __constant_htonl(NFS_OK)
-#define nfserr_perm __constant_htonl(NFSERR_PERM)
-#define nfserr_noent __constant_htonl(NFSERR_NOENT)
-#define nfserr_io __constant_htonl(NFSERR_IO)
-#define nfserr_nxio __constant_htonl(NFSERR_NXIO)
-#define nfserr_eagain __constant_htonl(NFSERR_EAGAIN)
-#define nfserr_acces __constant_htonl(NFSERR_ACCES)
-#define nfserr_exist __constant_htonl(NFSERR_EXIST)
-#define nfserr_xdev __constant_htonl(NFSERR_XDEV)
-#define nfserr_nodev __constant_htonl(NFSERR_NODEV)
-#define nfserr_notdir __constant_htonl(NFSERR_NOTDIR)
-#define nfserr_isdir __constant_htonl(NFSERR_ISDIR)
-#define nfserr_inval __constant_htonl(NFSERR_INVAL)
-#define nfserr_fbig __constant_htonl(NFSERR_FBIG)
-#define nfserr_nospc __constant_htonl(NFSERR_NOSPC)
-#define nfserr_rofs __constant_htonl(NFSERR_ROFS)
-#define nfserr_mlink __constant_htonl(NFSERR_MLINK)
-#define nfserr_opnotsupp __constant_htonl(NFSERR_OPNOTSUPP)
-#define nfserr_nametoolong __constant_htonl(NFSERR_NAMETOOLONG)
-#define nfserr_notempty __constant_htonl(NFSERR_NOTEMPTY)
-#define nfserr_dquot __constant_htonl(NFSERR_DQUOT)
-#define nfserr_stale __constant_htonl(NFSERR_STALE)
-#define nfserr_remote __constant_htonl(NFSERR_REMOTE)
-#define nfserr_wflush __constant_htonl(NFSERR_WFLUSH)
-#define nfserr_badhandle __constant_htonl(NFSERR_BADHANDLE)
-#define nfserr_notsync __constant_htonl(NFSERR_NOT_SYNC)
-#define nfserr_badcookie __constant_htonl(NFSERR_BAD_COOKIE)
-#define nfserr_notsupp __constant_htonl(NFSERR_NOTSUPP)
-#define nfserr_toosmall __constant_htonl(NFSERR_TOOSMALL)
-#define nfserr_serverfault __constant_htonl(NFSERR_SERVERFAULT)
-#define nfserr_badtype __constant_htonl(NFSERR_BADTYPE)
-#define nfserr_jukebox __constant_htonl(NFSERR_JUKEBOX)
-#define nfserr_denied __constant_htonl(NFSERR_DENIED)
-#define nfserr_deadlock __constant_htonl(NFSERR_DEADLOCK)
-#define nfserr_expired __constant_htonl(NFSERR_EXPIRED)
-#define nfserr_bad_cookie __constant_htonl(NFSERR_BAD_COOKIE)
-#define nfserr_same __constant_htonl(NFSERR_SAME)
-#define nfserr_clid_inuse __constant_htonl(NFSERR_CLID_INUSE)
-#define nfserr_stale_clientid __constant_htonl(NFSERR_STALE_CLIENTID)
-#define nfserr_resource __constant_htonl(NFSERR_RESOURCE)
-#define nfserr_moved __constant_htonl(NFSERR_MOVED)
-#define nfserr_nofilehandle __constant_htonl(NFSERR_NOFILEHANDLE)
-#define nfserr_minor_vers_mismatch __constant_htonl(NFSERR_MINOR_VERS_MISMATCH)
-#define nfserr_share_denied __constant_htonl(NFSERR_SHARE_DENIED)
-#define nfserr_stale_stateid __constant_htonl(NFSERR_STALE_STATEID)
-#define nfserr_old_stateid __constant_htonl(NFSERR_OLD_STATEID)
-#define nfserr_bad_stateid __constant_htonl(NFSERR_BAD_STATEID)
-#define nfserr_bad_seqid __constant_htonl(NFSERR_BAD_SEQID)
-#define nfserr_symlink __constant_htonl(NFSERR_SYMLINK)
-#define nfserr_not_same __constant_htonl(NFSERR_NOT_SAME)
-#define nfserr_restorefh __constant_htonl(NFSERR_RESTOREFH)
-#define nfserr_attrnotsupp __constant_htonl(NFSERR_ATTRNOTSUPP)
-#define nfserr_bad_xdr __constant_htonl(NFSERR_BAD_XDR)
-#define nfserr_openmode __constant_htonl(NFSERR_OPENMODE)
-#define nfserr_locks_held __constant_htonl(NFSERR_LOCKS_HELD)
-#define nfserr_op_illegal __constant_htonl(NFSERR_OP_ILLEGAL)
-#define nfserr_grace __constant_htonl(NFSERR_GRACE)
-#define nfserr_no_grace __constant_htonl(NFSERR_NO_GRACE)
-#define nfserr_reclaim_bad __constant_htonl(NFSERR_RECLAIM_BAD)
-#define nfserr_badname __constant_htonl(NFSERR_BADNAME)
-#define nfserr_cb_path_down __constant_htonl(NFSERR_CB_PATH_DOWN)
-#define nfserr_locked __constant_htonl(NFSERR_LOCKED)
-#define nfserr_wrongsec __constant_htonl(NFSERR_WRONGSEC)
-#define nfserr_replay_me __constant_htonl(NFSERR_REPLAY_ME)
+#define nfs_ok cpu_to_be32(NFS_OK)
+#define nfserr_perm cpu_to_be32(NFSERR_PERM)
+#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
+#define nfserr_io cpu_to_be32(NFSERR_IO)
+#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
+#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
+#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
+#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
+#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
+#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
+#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
+#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
+#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
+#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
+#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
+#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
+#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
+#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
+#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
+#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
+#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
+#define nfserr_stale cpu_to_be32(NFSERR_STALE)
+#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
+#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
+#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
+#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
+#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
+#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
+#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
+#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
+#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
+#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
+#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
+#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
+#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
+#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
+#define nfserr_same cpu_to_be32(NFSERR_SAME)
+#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
+#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
+#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
+#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
+#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
+#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
+#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
+#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
+#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
+#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
+#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
+#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
+#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
+#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
+#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
+#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
+#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
+#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
+#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
+#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
+#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
+#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
+#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
+#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
+#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
+#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
+#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
+#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
+#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
+#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
+#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
+#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
+#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
+#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
+#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
+#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
+#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
+#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
+#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
+#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
+#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
+#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
+#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
+#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
+#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
+#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
+#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
+#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
+#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
+#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
+#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
+#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
+#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
+#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
+#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
+#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
+#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
+#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
+#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
+#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
+#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
+#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
+#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
+#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
/* error codes for internal use */
/* if a request fails due to kmalloc failure, it gets dropped.
* Client should resend eventually
*/
-#define nfserr_dropit __constant_htonl(30000)
+#define nfserr_dropit cpu_to_be32(30000)
/* end-of-file indicator in readdir */
-#define nfserr_eof __constant_htonl(30001)
+#define nfserr_eof cpu_to_be32(30001)
+/* replay detected */
+#define nfserr_replay_me cpu_to_be32(11001)
+/* nfs41 replay detected */
+#define nfserr_replay_cache cpu_to_be32(11002)
/* Check for dir entries '.' and '..' */
#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
* TIME_BACKUP (unlikely to be supported any time soon)
* TIME_CREATE (unlikely to be supported any time soon)
*/
-#define NFSD_SUPPORTED_ATTRS_WORD0 \
+#define NFSD4_SUPPORTED_ATTRS_WORD0 \
(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
| FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE | FATTR4_WORD0_LINK_SUPPORT \
| FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR | FATTR4_WORD0_FSID \
| FATTR4_WORD0_MAXFILESIZE | FATTR4_WORD0_MAXLINK | FATTR4_WORD0_MAXNAME \
| FATTR4_WORD0_MAXREAD | FATTR4_WORD0_MAXWRITE | FATTR4_WORD0_ACL)
-#define NFSD_SUPPORTED_ATTRS_WORD1 \
+#define NFSD4_SUPPORTED_ATTRS_WORD1 \
(FATTR4_WORD1_MODE | FATTR4_WORD1_NO_TRUNC | FATTR4_WORD1_NUMLINKS \
| FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP | FATTR4_WORD1_RAWDEV \
| FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL \
| FATTR4_WORD1_TIME_DELTA | FATTR4_WORD1_TIME_METADATA \
| FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)
+#define NFSD4_SUPPORTED_ATTRS_WORD2 0
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
+ NFSD4_SUPPORTED_ATTRS_WORD0
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
+ NFSD4_SUPPORTED_ATTRS_WORD1
+
+#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
+ (NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)
+
+static inline u32 nfsd_suppattrs0(u32 minorversion)
+{
+ return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
+ : NFSD4_SUPPORTED_ATTRS_WORD0;
+}
+
+static inline u32 nfsd_suppattrs1(u32 minorversion)
+{
+ return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
+ : NFSD4_SUPPORTED_ATTRS_WORD1;
+}
+
+static inline u32 nfsd_suppattrs2(u32 minorversion)
+{
+ return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
+ : NFSD4_SUPPORTED_ATTRS_WORD2;
+}
+
/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
#define NFSD_WRITEONLY_ATTRS_WORD1 \
(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
#define NFSD_WRITEABLE_ATTRS_WORD1 \
(FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP \
| FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)
+#define NFSD_WRITEABLE_ATTRS_WORD2 0
+
+#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
+ NFSD_WRITEABLE_ATTRS_WORD0
+/*
+ * we currently store the exclusive create verifier in the v_{a,m}time
+ * attributes so the client can't set these at create time using EXCLUSIVE4_1
+ */
+#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
+ (NFSD_WRITEABLE_ATTRS_WORD1 & \
+ ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
+#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
+ NFSD_WRITEABLE_ATTRS_WORD2
#endif /* CONFIG_NFSD_V4 */
return dst;
}
+static inline void
+fh_copy_shallow(struct knfsd_fh *dst, struct knfsd_fh *src)
+{
+ dst->fh_size = src->fh_size;
+ memcpy(&dst->fh_base, &src->fh_base, src->fh_size);
+}
+
static __inline__ struct svc_fh *
fh_init(struct svc_fh *fhp, int maxsize)
{
u32 cbr_ident;
int cbr_trunc;
stateid_t cbr_stateid;
- u32 cbr_fhlen;
- char cbr_fhval[NFS4_FHSIZE];
+ struct knfsd_fh cbr_fh;
struct nfs4_delegation *cbr_dp;
};
};
#define dl_stateid dl_recall.cbr_stateid
-#define dl_fhlen dl_recall.cbr_fhlen
-#define dl_fhval dl_recall.cbr_fhval
+#define dl_fh dl_recall.cbr_fh
/* client delegation callback info */
struct nfs4_callback {
struct rpc_clnt * cb_client;
};
+/* Maximum number of slots per session. 128 is useful for long haul TCP */
+#define NFSD_MAX_SLOTS_PER_SESSION 128
+/* Maximum number of pages per slot cache entry */
+#define NFSD_PAGES_PER_SLOT 1
+/* Maximum number of operations per session compound */
+#define NFSD_MAX_OPS_PER_COMPOUND 16
+
+struct nfsd4_cache_entry {
+ __be32 ce_status;
+ struct kvec ce_datav; /* encoded NFSv4.1 data in rq_res.head[0] */
+ struct page *ce_respages[NFSD_PAGES_PER_SLOT + 1];
+ int ce_cachethis;
+ short ce_resused;
+ int ce_opcnt;
+ int ce_rpchdrlen;
+};
+
+struct nfsd4_slot {
+ bool sl_inuse;
+ u32 sl_seqid;
+ struct nfsd4_cache_entry sl_cache_entry;
+};
+
+struct nfsd4_session {
+ struct kref se_ref;
+ struct list_head se_hash; /* hash by sessionid */
+ struct list_head se_perclnt;
+ u32 se_flags;
+ struct nfs4_client *se_client; /* for expire_client */
+ struct nfs4_sessionid se_sessionid;
+ u32 se_fmaxreq_sz;
+ u32 se_fmaxresp_sz;
+ u32 se_fmaxresp_cached;
+ u32 se_fmaxops;
+ u32 se_fnumslots;
+ struct nfsd4_slot se_slots[]; /* forward channel slots */
+};
+
+static inline void
+nfsd4_put_session(struct nfsd4_session *ses)
+{
+ extern void free_session(struct kref *kref);
+ kref_put(&ses->se_ref, free_session);
+}
+
+static inline void
+nfsd4_get_session(struct nfsd4_session *ses)
+{
+ kref_get(&ses->se_ref);
+}
+
+/* formatted contents of nfs4_sessionid */
+struct nfsd4_sessionid {
+ clientid_t clientid;
+ u32 sequence;
+ u32 reserved;
+};
+
#define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */
/*
struct nfs4_callback cl_callback; /* callback info */
atomic_t cl_count; /* ref count */
u32 cl_firststate; /* recovery dir creation */
+
+ /* for nfs41 */
+ struct list_head cl_sessions;
+ struct nfsd4_slot cl_slot; /* create_session slot */
+ u32 cl_exchange_flags;
+ struct nfs4_sessionid cl_sessionid;
};
/* struct nfs4_client_reset
unsigned int rp_buflen;
char *rp_buf;
unsigned intrp_allocated;
- int rp_openfh_len;
- char rp_openfh[NFS4_FHSIZE];
+ struct knfsd_fh rp_openfh;
char rp_ibuf[NFSD4_REPLAY_ISIZE];
};
* share_acces, share_deny on the file.
*/
struct nfs4_file {
- struct kref fi_ref;
+ atomic_t fi_ref;
struct list_head fi_hash; /* hash by "struct inode *" */
struct list_head fi_stateids;
struct list_head fi_delegations;
};
/* flags for preprocess_seqid_op() */
-#define CHECK_FH 0x00000001
+#define HAS_SESSION 0x00000001
#define CONFIRM 0x00000002
#define OPEN_STATE 0x00000004
#define LOCK_STATE 0x00000008
#define RD_STATE 0x00000010
#define WR_STATE 0x00000020
#define CLOSE_STATE 0x00000040
-#define DELEG_RET 0x00000080
#define seqid_mutating_err(err) \
(((err) != nfserr_stale_clientid) && \
((err) != nfserr_stale_stateid) && \
((err) != nfserr_bad_stateid))
-extern __be32 nfs4_preprocess_stateid_op(struct svc_fh *current_fh,
+struct nfsd4_compound_state;
+
+extern __be32 nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
stateid_t *stateid, int flags, struct file **filp);
extern void nfs4_lock_state(void);
extern void nfs4_unlock_state(void);
extern int nfsd4_recdir_load(void);
extern void nfsd4_shutdown_recdir(void);
extern int nfs4_client_to_reclaim(const char *name);
-extern int nfs4_has_reclaimed_state(const char *name);
+extern int nfs4_has_reclaimed_state(const char *name, bool use_exchange_id);
extern void nfsd4_recdir_purge_old(void);
extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
#include <linux/nfs4.h>
+/* thread usage wraps very million seconds (approx one fortnight) */
+#define NFSD_USAGE_WRAP (HZ*1000000)
+
+#ifdef __KERNEL__
+
struct nfsd_stats {
unsigned int rchits; /* repcache hits */
unsigned int rcmisses; /* repcache hits */
};
-/* thread usage wraps very million seconds (approx one fortnight) */
-#define NFSD_USAGE_WRAP (HZ*1000000)
-
-#ifdef __KERNEL__
extern struct nfsd_stats nfsdstats;
extern struct svc_stat nfsd_svcstats;
#define XDR_LEN(n) (((n) + 3) & ~3)
struct nfsd4_compound_state {
- struct svc_fh current_fh;
- struct svc_fh save_fh;
- struct nfs4_stateowner *replay_owner;
-};
+ struct svc_fh current_fh;
+ struct svc_fh save_fh;
+ struct nfs4_stateowner *replay_owner;
+ /* For sessions DRC */
+ struct nfsd4_session *session;
+ struct nfsd4_slot *slot;
+ __be32 *statp;
+ size_t iovlen;
+ u32 minorversion;
+ u32 status;
+};
+
+static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
+{
+ return cs->slot != NULL;
+}
struct nfsd4_change_info {
u32 atomic;
u32 specdata2;
} dev; /* NF4BLK, NF4CHR */
} u;
- u32 cr_bmval[2]; /* request */
+ u32 cr_bmval[3]; /* request */
struct iattr cr_iattr; /* request */
struct nfsd4_change_info cr_cinfo; /* response */
struct nfs4_acl *cr_acl;
};
struct nfsd4_getattr {
- u32 ga_bmval[2]; /* request */
+ u32 ga_bmval[3]; /* request */
struct svc_fh *ga_fhp; /* response */
};
stateid_t op_delegate_stateid; /* request - response */
u32 op_create; /* request */
u32 op_createmode; /* request */
- u32 op_bmval[2]; /* request */
- union { /* request */
- struct iattr iattr; /* UNCHECKED4,GUARDED4 */
- nfs4_verifier verf; /* EXCLUSIVE4 */
- } u;
+ u32 op_bmval[3]; /* request */
+ struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
+ nfs4_verifier verf; /* EXCLUSIVE4 */
clientid_t op_clientid; /* request */
struct xdr_netobj op_owner; /* request */
u32 op_seqid; /* request */
struct nfs4_stateowner *op_stateowner; /* used during processing */
struct nfs4_acl *op_acl;
};
-#define op_iattr u.iattr
-#define op_verf u.verf
+#define op_iattr iattr
+#define op_verf verf
struct nfsd4_open_confirm {
stateid_t oc_req_stateid /* request */;
nfs4_verifier rd_verf; /* request */
u32 rd_dircount; /* request */
u32 rd_maxcount; /* request */
- u32 rd_bmval[2]; /* request */
+ u32 rd_bmval[3]; /* request */
struct svc_rqst *rd_rqstp; /* response */
struct svc_fh * rd_fhp; /* response */
struct nfsd4_setattr {
stateid_t sa_stateid; /* request */
- u32 sa_bmval[2]; /* request */
+ u32 sa_bmval[3]; /* request */
struct iattr sa_iattr; /* request */
struct nfs4_acl *sa_acl;
};
/* also used for NVERIFY */
struct nfsd4_verify {
- u32 ve_bmval[2]; /* request */
+ u32 ve_bmval[3]; /* request */
u32 ve_attrlen; /* request */
char * ve_attrval; /* request */
};
nfs4_verifier wr_verifier; /* response */
};
+struct nfsd4_exchange_id {
+ nfs4_verifier verifier;
+ struct xdr_netobj clname;
+ u32 flags;
+ clientid_t clientid;
+ u32 seqid;
+ int spa_how;
+};
+
+struct nfsd4_channel_attrs {
+ u32 headerpadsz;
+ u32 maxreq_sz;
+ u32 maxresp_sz;
+ u32 maxresp_cached;
+ u32 maxops;
+ u32 maxreqs;
+ u32 nr_rdma_attrs;
+ u32 rdma_attrs;
+};
+
+struct nfsd4_create_session {
+ clientid_t clientid;
+ struct nfs4_sessionid sessionid;
+ u32 seqid;
+ u32 flags;
+ struct nfsd4_channel_attrs fore_channel;
+ struct nfsd4_channel_attrs back_channel;
+ u32 callback_prog;
+ u32 uid;
+ u32 gid;
+};
+
+struct nfsd4_sequence {
+ struct nfs4_sessionid sessionid; /* request/response */
+ u32 seqid; /* request/response */
+ u32 slotid; /* request/response */
+ u32 maxslots; /* request/response */
+ u32 cachethis; /* request */
+#if 0
+ u32 target_maxslots; /* response */
+ u32 status_flags; /* response */
+#endif /* not yet */
+};
+
+struct nfsd4_destroy_session {
+ struct nfs4_sessionid sessionid;
+};
+
struct nfsd4_op {
int opnum;
__be32 status;
struct nfsd4_verify verify;
struct nfsd4_write write;
struct nfsd4_release_lockowner release_lockowner;
+
+ /* NFSv4.1 */
+ struct nfsd4_exchange_id exchange_id;
+ struct nfsd4_create_session create_session;
+ struct nfsd4_destroy_session destroy_session;
+ struct nfsd4_sequence sequence;
} u;
struct nfs4_replay * replay;
};
u32 taglen;
char * tag;
u32 opcnt;
- __be32 * tagp; /* where to encode tag and opcount */
+ __be32 * tagp; /* tag, opcount encode location */
+ struct nfsd4_compound_state cstate;
};
+static inline bool nfsd4_is_solo_sequence(struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+ return args->opcnt == 1;
+}
+
+static inline bool nfsd4_not_cached(struct nfsd4_compoundres *resp)
+{
+ return !resp->cstate.slot->sl_cache_entry.ce_cachethis ||
+ nfsd4_is_solo_sequence(resp);
+}
+
#define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs)
static inline void
extern __be32 nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
struct nfsd4_compound_state *,
struct nfsd4_setclientid_confirm *setclientid_confirm);
-extern __be32 nfsd4_process_open1(struct nfsd4_open *open);
+extern void nfsd4_store_cache_entry(struct nfsd4_compoundres *resp);
+extern __be32 nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
+ struct nfsd4_sequence *seq);
+extern __be32 nfsd4_exchange_id(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *,
+struct nfsd4_exchange_id *);
+ extern __be32 nfsd4_create_session(struct svc_rqst *,
+ struct nfsd4_compound_state *,
+ struct nfsd4_create_session *);
+extern __be32 nfsd4_sequence(struct svc_rqst *,
+ struct nfsd4_compound_state *,
+ struct nfsd4_sequence *);
+extern __be32 nfsd4_destroy_session(struct svc_rqst *,
+ struct nfsd4_compound_state *,
+ struct nfsd4_destroy_session *);
+extern __be32 nfsd4_process_open1(struct nfsd4_compound_state *,
+ struct nfsd4_open *open);
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
struct svc_fh *current_fh, struct nfsd4_open *open);
extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
*/
typedef int (*svc_thread_fn)(void *);
+/* statistics for svc_pool structures */
+struct svc_pool_stats {
+ unsigned long packets;
+ unsigned long sockets_queued;
+ unsigned long threads_woken;
+ unsigned long overloads_avoided;
+ unsigned long threads_timedout;
+};
+
/*
*
* RPC service thread pool.
struct list_head sp_sockets; /* pending sockets */
unsigned int sp_nrthreads; /* # of threads in pool */
struct list_head sp_all_threads; /* all server threads */
+ int sp_nwaking; /* number of threads woken but not yet active */
+ struct svc_pool_stats sp_stats; /* statistics on pool operation */
} ____cacheline_aligned_in_smp;
/*
struct module * sv_module; /* optional module to count when
* adding threads */
svc_thread_fn sv_function; /* main function for threads */
+ unsigned int sv_drc_max_pages; /* Total pages for DRC */
+ unsigned int sv_drc_pages_used;/* DRC pages used */
};
/*
struct svc_cred rq_cred; /* auth info */
void * rq_xprt_ctxt; /* transport specific context ptr */
struct svc_deferred_req*rq_deferred; /* deferred request we are replaying */
+ int rq_usedeferral; /* use deferral */
size_t rq_xprt_hlen; /* xprt header len */
struct xdr_buf rq_arg;
* cache pages */
wait_queue_head_t rq_wait; /* synchronization */
struct task_struct *rq_task; /* service thread */
+ int rq_waking; /* 1 if thread is being woken */
};
/*
void (*shutdown)(struct svc_serv *),
svc_thread_fn, struct module *);
int svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
+int svc_pool_stats_open(struct svc_serv *serv, struct file *file);
void svc_destroy(struct svc_serv *);
int svc_process(struct svc_rqst *);
int svc_register(const struct svc_serv *, const int,
* pre-xdr'ed macros.
*/
-#define xdr_zero __constant_htonl(0)
-#define xdr_one __constant_htonl(1)
-#define xdr_two __constant_htonl(2)
-
-#define rpc_success __constant_htonl(RPC_SUCCESS)
-#define rpc_prog_unavail __constant_htonl(RPC_PROG_UNAVAIL)
-#define rpc_prog_mismatch __constant_htonl(RPC_PROG_MISMATCH)
-#define rpc_proc_unavail __constant_htonl(RPC_PROC_UNAVAIL)
-#define rpc_garbage_args __constant_htonl(RPC_GARBAGE_ARGS)
-#define rpc_system_err __constant_htonl(RPC_SYSTEM_ERR)
-#define rpc_drop_reply __constant_htonl(RPC_DROP_REPLY)
-
-#define rpc_auth_ok __constant_htonl(RPC_AUTH_OK)
-#define rpc_autherr_badcred __constant_htonl(RPC_AUTH_BADCRED)
-#define rpc_autherr_rejectedcred __constant_htonl(RPC_AUTH_REJECTEDCRED)
-#define rpc_autherr_badverf __constant_htonl(RPC_AUTH_BADVERF)
-#define rpc_autherr_rejectedverf __constant_htonl(RPC_AUTH_REJECTEDVERF)
-#define rpc_autherr_tooweak __constant_htonl(RPC_AUTH_TOOWEAK)
-#define rpcsec_gsserr_credproblem __constant_htonl(RPCSEC_GSS_CREDPROBLEM)
-#define rpcsec_gsserr_ctxproblem __constant_htonl(RPCSEC_GSS_CTXPROBLEM)
-#define rpc_autherr_oldseqnum __constant_htonl(101)
+#define xdr_zero cpu_to_be32(0)
+#define xdr_one cpu_to_be32(1)
+#define xdr_two cpu_to_be32(2)
+
+#define rpc_success cpu_to_be32(RPC_SUCCESS)
+#define rpc_prog_unavail cpu_to_be32(RPC_PROG_UNAVAIL)
+#define rpc_prog_mismatch cpu_to_be32(RPC_PROG_MISMATCH)
+#define rpc_proc_unavail cpu_to_be32(RPC_PROC_UNAVAIL)
+#define rpc_garbage_args cpu_to_be32(RPC_GARBAGE_ARGS)
+#define rpc_system_err cpu_to_be32(RPC_SYSTEM_ERR)
+#define rpc_drop_reply cpu_to_be32(RPC_DROP_REPLY)
+
+#define rpc_auth_ok cpu_to_be32(RPC_AUTH_OK)
+#define rpc_autherr_badcred cpu_to_be32(RPC_AUTH_BADCRED)
+#define rpc_autherr_rejectedcred cpu_to_be32(RPC_AUTH_REJECTEDCRED)
+#define rpc_autherr_badverf cpu_to_be32(RPC_AUTH_BADVERF)
+#define rpc_autherr_rejectedverf cpu_to_be32(RPC_AUTH_REJECTEDVERF)
+#define rpc_autherr_tooweak cpu_to_be32(RPC_AUTH_TOOWEAK)
+#define rpcsec_gsserr_credproblem cpu_to_be32(RPCSEC_GSS_CREDPROBLEM)
+#define rpcsec_gsserr_ctxproblem cpu_to_be32(RPCSEC_GSS_CTXPROBLEM)
+#define rpc_autherr_oldseqnum cpu_to_be32(101)
/*
* Miscellaneous XDR helper functions
rqstp->rq_res.tail[0].iov_len = 0;
/* Will be turned off only in gss privacy case: */
rqstp->rq_splice_ok = 1;
+ /* Will be turned off only when NFSv4 Sessions are used */
+ rqstp->rq_usedeferral = 1;
/* Setup reply header */
rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp);
procp = versp->vs_proc + proc;
if (proc >= versp->vs_nproc || !procp->pc_func)
goto err_bad_proc;
- rqstp->rq_server = serv;
rqstp->rq_procinfo = procp;
/* Syntactic check complete */
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
+#define SVC_MAX_WAKING 5
+
static struct svc_deferred_req *svc_deferred_dequeue(struct svc_xprt *xprt);
static int svc_deferred_recv(struct svc_rqst *rqstp);
static struct cache_deferred_req *svc_defer(struct cache_req *req);
struct svc_pool *pool;
struct svc_rqst *rqstp;
int cpu;
+ int thread_avail;
if (!(xprt->xpt_flags &
((1<<XPT_CONN)|(1<<XPT_DATA)|(1<<XPT_CLOSE)|(1<<XPT_DEFERRED))))
spin_lock_bh(&pool->sp_lock);
- if (!list_empty(&pool->sp_threads) &&
- !list_empty(&pool->sp_sockets))
- printk(KERN_ERR
- "svc_xprt_enqueue: "
- "threads and transports both waiting??\n");
-
if (test_bit(XPT_DEAD, &xprt->xpt_flags)) {
/* Don't enqueue dead transports */
dprintk("svc: transport %p is dead, not enqueued\n", xprt);
goto out_unlock;
}
+ pool->sp_stats.packets++;
+
/* Mark transport as busy. It will remain in this state until
* the provider calls svc_xprt_received. We update XPT_BUSY
* atomically because it also guards against trying to enqueue
}
process:
- if (!list_empty(&pool->sp_threads)) {
+ /* Work out whether threads are available */
+ thread_avail = !list_empty(&pool->sp_threads); /* threads are asleep */
+ if (pool->sp_nwaking >= SVC_MAX_WAKING) {
+ /* too many threads are runnable and trying to wake up */
+ thread_avail = 0;
+ pool->sp_stats.overloads_avoided++;
+ }
+
+ if (thread_avail) {
rqstp = list_entry(pool->sp_threads.next,
struct svc_rqst,
rq_list);
svc_xprt_get(xprt);
rqstp->rq_reserved = serv->sv_max_mesg;
atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved);
+ rqstp->rq_waking = 1;
+ pool->sp_nwaking++;
+ pool->sp_stats.threads_woken++;
BUG_ON(xprt->xpt_pool != pool);
wake_up(&rqstp->rq_wait);
} else {
dprintk("svc: transport %p put into queue\n", xprt);
list_add_tail(&xprt->xpt_ready, &pool->sp_sockets);
+ pool->sp_stats.sockets_queued++;
BUG_ON(xprt->xpt_pool != pool);
}
int pages;
struct xdr_buf *arg;
DECLARE_WAITQUEUE(wait, current);
+ long time_left;
dprintk("svc: server %p waiting for data (to = %ld)\n",
rqstp, timeout);
return -EINTR;
spin_lock_bh(&pool->sp_lock);
+ if (rqstp->rq_waking) {
+ rqstp->rq_waking = 0;
+ pool->sp_nwaking--;
+ BUG_ON(pool->sp_nwaking < 0);
+ }
xprt = svc_xprt_dequeue(pool);
if (xprt) {
rqstp->rq_xprt = xprt;
add_wait_queue(&rqstp->rq_wait, &wait);
spin_unlock_bh(&pool->sp_lock);
- schedule_timeout(timeout);
+ time_left = schedule_timeout(timeout);
try_to_freeze();
spin_lock_bh(&pool->sp_lock);
remove_wait_queue(&rqstp->rq_wait, &wait);
+ if (!time_left)
+ pool->sp_stats.threads_timedout++;
xprt = rqstp->rq_xprt;
if (!xprt) {
struct svc_rqst *rqstp = container_of(req, struct svc_rqst, rq_chandle);
struct svc_deferred_req *dr;
- if (rqstp->rq_arg.page_len)
+ if (rqstp->rq_arg.page_len || !rqstp->rq_usedeferral)
return NULL; /* if more than a page, give up FIXME */
if (rqstp->rq_deferred) {
dr = rqstp->rq_deferred;
return totlen;
}
EXPORT_SYMBOL_GPL(svc_xprt_names);
+
+
+/*----------------------------------------------------------------------------*/
+
+static void *svc_pool_stats_start(struct seq_file *m, loff_t *pos)
+{
+ unsigned int pidx = (unsigned int)*pos;
+ struct svc_serv *serv = m->private;
+
+ dprintk("svc_pool_stats_start, *pidx=%u\n", pidx);
+
+ lock_kernel();
+ /* bump up the pseudo refcount while traversing */
+ svc_get(serv);
+ unlock_kernel();
+
+ if (!pidx)
+ return SEQ_START_TOKEN;
+ return (pidx > serv->sv_nrpools ? NULL : &serv->sv_pools[pidx-1]);
+}
+
+static void *svc_pool_stats_next(struct seq_file *m, void *p, loff_t *pos)
+{
+ struct svc_pool *pool = p;
+ struct svc_serv *serv = m->private;
+
+ dprintk("svc_pool_stats_next, *pos=%llu\n", *pos);
+
+ if (p == SEQ_START_TOKEN) {
+ pool = &serv->sv_pools[0];
+ } else {
+ unsigned int pidx = (pool - &serv->sv_pools[0]);
+ if (pidx < serv->sv_nrpools-1)
+ pool = &serv->sv_pools[pidx+1];
+ else
+ pool = NULL;
+ }
+ ++*pos;
+ return pool;
+}
+
+static void svc_pool_stats_stop(struct seq_file *m, void *p)
+{
+ struct svc_serv *serv = m->private;
+
+ lock_kernel();
+ /* this function really, really should have been called svc_put() */
+ svc_destroy(serv);
+ unlock_kernel();
+}
+
+static int svc_pool_stats_show(struct seq_file *m, void *p)
+{
+ struct svc_pool *pool = p;
+
+ if (p == SEQ_START_TOKEN) {
+ seq_puts(m, "# pool packets-arrived sockets-enqueued threads-woken overloads-avoided threads-timedout\n");
+ return 0;
+ }
+
+ seq_printf(m, "%u %lu %lu %lu %lu %lu\n",
+ pool->sp_id,
+ pool->sp_stats.packets,
+ pool->sp_stats.sockets_queued,
+ pool->sp_stats.threads_woken,
+ pool->sp_stats.overloads_avoided,
+ pool->sp_stats.threads_timedout);
+
+ return 0;
+}
+
+static const struct seq_operations svc_pool_stats_seq_ops = {
+ .start = svc_pool_stats_start,
+ .next = svc_pool_stats_next,
+ .stop = svc_pool_stats_stop,
+ .show = svc_pool_stats_show,
+};
+
+int svc_pool_stats_open(struct svc_serv *serv, struct file *file)
+{
+ int err;
+
+ err = seq_open(file, &svc_pool_stats_seq_ops);
+ if (!err)
+ ((struct seq_file *) file->private_data)->private = serv;
+ return err;
+}
+EXPORT_SYMBOL(svc_pool_stats_open);
+
+/*----------------------------------------------------------------------------*/
lock_sock(sock->sk);
sock->sk->sk_sndbuf = snd * 2;
sock->sk->sk_rcvbuf = rcv * 2;
- sock->sk->sk_userlocks |= SOCK_SNDBUF_LOCK|SOCK_RCVBUF_LOCK;
release_sock(sock->sk);
#endif
}
test_bit(XPT_CONN, &svsk->sk_xprt.xpt_flags),
test_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags));
- if (test_and_clear_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags))
- /* sndbuf needs to have room for one request
- * per thread, otherwise we can stall even when the
- * network isn't a bottleneck.
- *
- * We count all threads rather than threads in a
- * particular pool, which provides an upper bound
- * on the number of threads which will access the socket.
- *
- * rcvbuf just needs to be able to hold a few requests.
- * Normally they will be removed from the queue
- * as soon a a complete request arrives.
- */
- svc_sock_setbufsize(svsk->sk_sock,
- (serv->sv_nrthreads+3) * serv->sv_max_mesg,
- 3 * serv->sv_max_mesg);
-
clear_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags);
/* Receive data. If we haven't got the record length yet, get
tcp_sk(sk)->nonagle |= TCP_NAGLE_OFF;
- /* initialise setting must have enough space to
- * receive and respond to one request.
- * svc_tcp_recvfrom will re-adjust if necessary
- */
- svc_sock_setbufsize(svsk->sk_sock,
- 3 * svsk->sk_xprt.xpt_server->sv_max_mesg,
- 3 * svsk->sk_xprt.xpt_server->sv_max_mesg);
-
- set_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags);
set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags);
if (sk->sk_state != TCP_ESTABLISHED)
set_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags);
/* Initialize the socket */
if (sock->type == SOCK_DGRAM)
svc_udp_init(svsk, serv);
- else
+ else {
+ /* initialise setting must have enough space to
+ * receive and respond to one request.
+ */
+ svc_sock_setbufsize(svsk->sk_sock, 4 * serv->sv_max_mesg,
+ 4 * serv->sv_max_mesg);
svc_tcp_init(svsk, serv);
+ }
dprintk("svc: svc_setup_socket created %p (inet %p)\n",
svsk, svsk->sk_sk);
git.openpandora.org / pandora-kernel.git / commitdiff