ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/fs/nfsd/netns.h b/marvell/linux/fs/nfsd/netns.h
new file mode 100644
index 0000000..d102bdd
--- /dev/null
+++ b/marvell/linux/fs/nfsd/netns.h
@@ -0,0 +1,185 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * per net namespace data structures for nfsd
+ *
+ * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
+ */
+
+#ifndef __NFSD_NETNS_H__
+#define __NFSD_NETNS_H__
+
+#include <net/net_namespace.h>
+#include <net/netns/generic.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 SESSION_HASH_SIZE 512
+
+struct cld_net;
+struct nfsd4_client_tracking_ops;
+
+/*
+ * 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;
+
+ struct cache_detail *svc_expkey_cache;
+ struct cache_detail *svc_export_cache;
+
+ struct cache_detail *idtoname_cache;
+ struct cache_detail *nametoid_cache;
+
+ struct lock_manager nfsd4_manager;
+ bool grace_ended;
+ time64_t boot_time;
+
+ struct dentry *nfsd_client_dir;
+
+ /*
+ * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
+ * used in reboot/reset lease grace period processing
+ *
+ * conf_id_hashtbl[], and conf_name_tree hold confirmed
+ * setclientid_confirmed info.
+ *
+ * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
+ * setclientid info.
+ */
+ struct list_head *reclaim_str_hashtbl;
+ int reclaim_str_hashtbl_size;
+ struct list_head *conf_id_hashtbl;
+ struct rb_root conf_name_tree;
+ struct list_head *unconf_id_hashtbl;
+ struct rb_root unconf_name_tree;
+ struct list_head *sessionid_hashtbl;
+ /*
+ * client_lru holds client queue ordered by nfs4_client.cl_time
+ * for lease renewal.
+ *
+ * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
+ * for last close replay.
+ *
+ * All of the above fields are protected by the client_mutex.
+ */
+ struct list_head client_lru;
+ 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;
+ const struct nfsd4_client_tracking_ops *client_tracking_ops;
+
+ time64_t nfsd4_lease;
+ time64_t nfsd4_grace;
+ bool somebody_reclaimed;
+
+ bool track_reclaim_completes;
+ atomic_t nr_reclaim_complete;
+
+ bool nfsd_net_up;
+ bool lockd_up;
+
+ /* Time of server startup */
+ struct timespec64 nfssvc_boot;
+ seqlock_t boot_lock;
+
+ /*
+ * Max number of connections this nfsd container will allow. Defaults
+ * to '0' which is means that it bases this on the number of threads.
+ */
+ unsigned int max_connections;
+
+ u32 clientid_base;
+ u32 clientid_counter;
+ u32 clverifier_counter;
+
+ struct svc_serv *nfsd_serv;
+
+ wait_queue_head_t ntf_wq;
+ atomic_t ntf_refcnt;
+
+ /* Allow umount to wait for nfsd state cleanup */
+ struct completion nfsd_shutdown_complete;
+
+ /*
+ * clientid and stateid data for construction of net unique COPY
+ * stateids.
+ */
+ u32 s2s_cp_cl_id;
+ struct idr s2s_cp_stateids;
+ spinlock_t s2s_cp_lock;
+
+ /*
+ * Version information
+ */
+ bool *nfsd_versions;
+ bool *nfsd4_minorversions;
+
+ /*
+ * 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.
+ * These fields and the "rc" fields in nfsdstats are modified
+ * with only the per-bucket cache lock, which isn't really safe
+ * and should be fixed if we want the statistics to be
+ * completely accurate.
+ */
+
+ /* total number of entries */
+ atomic_t num_drc_entries;
+
+ /* cache misses due only to checksum comparison failures */
+ unsigned int payload_misses;
+
+ /* amount of memory (in bytes) currently consumed by the DRC */
+ unsigned int drc_mem_usage;
+
+ /* 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;
+};
+
+/* Simple check to find out if a given net was properly initialized */
+#define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
+
+extern void nfsd_netns_free_versions(struct nfsd_net *nn);
+
+extern unsigned int nfsd_net_id;
+
+void nfsd_copy_boot_verifier(__be32 verf[2], struct nfsd_net *nn);
+void nfsd_reset_boot_verifier(struct nfsd_net *nn);
+#endif /* __NFSD_NETNS_H__ */