diff options
Diffstat (limited to 'fs/nfsd/netns.h')
| -rw-r--r-- | fs/nfsd/netns.h | 176 |
1 files changed, 149 insertions, 27 deletions
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h index 849a7c3ced22..3e2d0fde80a7 100644 --- a/fs/nfsd/netns.h +++ b/fs/nfsd/netns.h @@ -1,21 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * per net namespace data structures for nfsd * * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef __NFSD_NETNS_H__ @@ -23,20 +10,51 @@ #include <net/net_namespace.h> #include <net/netns/generic.h> +#include <linux/filelock.h> +#include <linux/nfs4.h> +#include <linux/percpu_counter.h> +#include <linux/percpu-refcount.h> +#include <linux/siphash.h> +#include <linux/sunrpc/stats.h> /* Hash tables for nfs4_clientid state */ #define CLIENT_HASH_BITS 4 #define CLIENT_HASH_SIZE (1 << CLIENT_HASH_BITS) #define CLIENT_HASH_MASK (CLIENT_HASH_SIZE - 1) -#define LOCKOWNER_INO_HASH_BITS 8 -#define LOCKOWNER_INO_HASH_SIZE (1 << LOCKOWNER_INO_HASH_BITS) - #define SESSION_HASH_SIZE 512 struct cld_net; struct nfsd4_client_tracking_ops; +enum { + /* cache misses due only to checksum comparison failures */ + NFSD_STATS_PAYLOAD_MISSES, + /* amount of memory (in bytes) currently consumed by the DRC */ + NFSD_STATS_DRC_MEM_USAGE, + NFSD_STATS_RC_HITS, /* repcache hits */ + NFSD_STATS_RC_MISSES, /* repcache misses */ + NFSD_STATS_RC_NOCACHE, /* uncached reqs */ + NFSD_STATS_FH_STALE, /* FH stale error */ + NFSD_STATS_IO_READ, /* bytes returned to read requests */ + NFSD_STATS_IO_WRITE, /* bytes passed in write requests */ +#ifdef CONFIG_NFSD_V4 + NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */ + NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP, +#define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op)) + NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */ +#endif + NFSD_STATS_COUNTERS_NUM +}; + +/* + * Represents a nfsd "container". With respect to nfsv4 state tracking, the + * fields of interest are the *_id_hashtbls and the *_name_tree. These track + * the nfs4_client objects by either short or long form clientid. + * + * Each nfsd_net runs a nfs4_laundromat workqueue job when necessary to clean + * up expired clients and delegations within the container. + */ struct nfsd_net { struct cld_net *cld_net; @@ -48,7 +66,9 @@ struct nfsd_net { struct lock_manager nfsd4_manager; bool grace_ended; - time_t boot_time; + time64_t boot_time; + + struct dentry *nfsd_client_dir; /* * reclaim_str_hashtbl[] holds known client info from previous reset/reboot @@ -66,8 +86,6 @@ struct nfsd_net { struct rb_root conf_name_tree; struct list_head *unconf_id_hashtbl; struct rb_root unconf_name_tree; - struct list_head *ownerstr_hashtbl; - struct list_head *lockowner_ino_hashtbl; struct list_head *sessionid_hashtbl; /* * client_lru holds client queue ordered by nfs4_client.cl_time @@ -82,30 +100,134 @@ struct nfsd_net { struct list_head close_lru; struct list_head del_recall_lru; + /* protected by blocked_locks_lock */ + struct list_head blocked_locks_lru; + struct delayed_work laundromat_work; /* client_lock protects the client lru list and session hash table */ spinlock_t client_lock; + /* protects blocked_locks_lru */ + spinlock_t blocked_locks_lock; + struct file *rec_file; bool in_grace; - struct nfsd4_client_tracking_ops *client_tracking_ops; + const struct nfsd4_client_tracking_ops *client_tracking_ops; + + time64_t nfsd4_lease; + time64_t nfsd4_grace; + bool somebody_reclaimed; - time_t nfsd4_lease; - time_t nfsd4_grace; + bool track_reclaim_completes; + atomic_t nr_reclaim_complete; bool nfsd_net_up; + bool lockd_up; + + seqlock_t writeverf_lock; + unsigned char writeverf[8]; + + u32 clientid_base; + u32 clientid_counter; + u32 clverifier_counter; + + struct svc_info nfsd_info; +#define nfsd_serv nfsd_info.serv + + struct percpu_ref nfsd_net_ref; + struct completion nfsd_net_confirm_done; + struct completion nfsd_net_free_done; /* - * Time of server startup + * clientid and stateid data for construction of net unique COPY + * stateids. */ - struct timeval nfssvc_boot; + u32 s2s_cp_cl_id; + struct idr s2s_cp_stateids; + spinlock_t s2s_cp_lock; + atomic_t pending_async_copies; - struct svc_serv *nfsd_serv; + /* + * Version information + */ + bool nfsd_versions[NFSD_MAXVERS + 1]; + bool nfsd4_minorversions[NFSD_SUPPORTED_MINOR_VERSION + 1]; + + /* + * Duplicate reply cache + */ + struct nfsd_drc_bucket *drc_hashtbl; + + /* max number of entries allowed in the cache */ + unsigned int max_drc_entries; + + /* number of significant bits in the hash value */ + unsigned int maskbits; + unsigned int drc_hashsize; + + /* + * Stats and other tracking of on the duplicate reply cache. + * The longest_chain* fields are modified with only the per-bucket + * cache lock, which isn't really safe and should be fixed if we want + * these statistics to be completely accurate. + */ + + /* total number of entries */ + atomic_t num_drc_entries; + + /* Per-netns stats counters */ + struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM]; + + /* sunrpc svc stats */ + struct svc_stat nfsd_svcstats; + + /* longest hash chain seen */ + unsigned int longest_chain; + + /* size of cache when we saw the longest hash chain */ + unsigned int longest_chain_cachesize; + + struct shrinker *nfsd_reply_cache_shrinker; + + /* tracking server-to-server copy mounts */ + spinlock_t nfsd_ssc_lock; + struct list_head nfsd_ssc_mount_list; + wait_queue_head_t nfsd_ssc_waitq; + + /* utsname taken from the process that starts the server */ + char nfsd_name[UNX_MAXNODENAME+1]; + + struct nfsd_fcache_disposal *fcache_disposal; + + siphash_key_t siphash_key; + + atomic_t nfs4_client_count; + int nfs4_max_clients; + + atomic_t nfsd_courtesy_clients; + struct shrinker *nfsd_client_shrinker; + struct work_struct nfsd_shrinker_work; + + /* last time an admin-revoke happened for NFSv4.0 */ + time64_t nfs40_last_revoke; + +#if IS_ENABLED(CONFIG_NFS_LOCALIO) + /* Local clients to be invalidated when net is shut down */ + spinlock_t local_clients_lock; + struct list_head local_clients; +#endif }; /* Simple check to find out if a given net was properly initialized */ #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl) -extern int nfsd_net_id; +extern bool nfsd_support_version(int vers); +extern unsigned int nfsd_net_id; + +bool nfsd_net_try_get(struct net *net); +void nfsd_net_put(struct net *net); + +void nfsd_copy_write_verifier(__be32 verf[2], struct nfsd_net *nn); +void nfsd_reset_write_verifier(struct nfsd_net *nn); #endif /* __NFSD_NETNS_H__ */ |