Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (c) 2001 The Regents of the University of Michigan. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Kendrick Smith <kmsmith@umich.edu> |
| 6 | * Andy Adamson <andros@umich.edu> |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the University nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 24 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 28 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | #ifndef _NFSD4_STATE_H |
| 36 | #define _NFSD4_STATE_H |
| 37 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 38 | #include <linux/idr.h> |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 39 | #include <linux/sunrpc/svc_xprt.h> |
J. Bruce Fields | 1557aca | 2009-12-04 19:36:06 -0500 | [diff] [blame] | 40 | #include "nfsfh.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | typedef struct { |
| 43 | u32 cl_boot; |
| 44 | u32 cl_id; |
| 45 | } clientid_t; |
| 46 | |
| 47 | typedef struct { |
J. Bruce Fields | d3b313a | 2011-09-15 15:02:41 -0400 | [diff] [blame] | 48 | clientid_t so_clid; |
| 49 | u32 so_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | } stateid_opaque_t; |
| 51 | |
| 52 | typedef struct { |
| 53 | u32 si_generation; |
| 54 | stateid_opaque_t si_opaque; |
| 55 | } stateid_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 57 | #define STATEID_FMT "(%08x/%08x/%08x/%08x)" |
| 58 | #define STATEID_VAL(s) \ |
J. Bruce Fields | d3b313a | 2011-09-15 15:02:41 -0400 | [diff] [blame] | 59 | (s)->si_opaque.so_clid.cl_boot, \ |
| 60 | (s)->si_opaque.so_clid.cl_id, \ |
| 61 | (s)->si_opaque.so_id, \ |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 62 | (s)->si_generation |
| 63 | |
J. Bruce Fields | 227f98d9 | 2010-02-18 08:27:24 -0800 | [diff] [blame] | 64 | struct nfsd4_callback { |
J. Bruce Fields | fb00392 | 2010-05-31 18:21:37 -0400 | [diff] [blame] | 65 | struct nfs4_client *cb_clp; |
J. Bruce Fields | 5878453 | 2010-05-16 16:47:08 -0400 | [diff] [blame] | 66 | struct rpc_message cb_msg; |
Julia Lawall | c4cb897 | 2015-11-21 22:57:39 +0100 | [diff] [blame] | 67 | const struct nfsd4_callback_ops *cb_ops; |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 68 | struct work_struct cb_work; |
Kinglong Mee | 7ba6cad | 2015-06-24 16:33:37 +0800 | [diff] [blame] | 69 | int cb_seq_status; |
Christoph Hellwig | ef2a1b3 | 2015-04-30 11:49:23 +0200 | [diff] [blame] | 70 | int cb_status; |
Christoph Hellwig | cba5f62 | 2015-04-30 11:49:24 +0200 | [diff] [blame] | 71 | bool cb_need_restart; |
J. Bruce Fields | 227f98d9 | 2010-02-18 08:27:24 -0800 | [diff] [blame] | 72 | }; |
| 73 | |
Christoph Hellwig | 0162ac2 | 2014-09-24 12:19:19 +0200 | [diff] [blame] | 74 | struct nfsd4_callback_ops { |
| 75 | void (*prepare)(struct nfsd4_callback *); |
| 76 | int (*done)(struct nfsd4_callback *, struct rpc_task *); |
| 77 | void (*release)(struct nfsd4_callback *); |
| 78 | }; |
| 79 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 80 | /* |
| 81 | * A core object that represents a "common" stateid. These are generally |
| 82 | * embedded within the different (more specific) stateid objects and contain |
| 83 | * fields that are of general use to any stateid. |
| 84 | */ |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 85 | struct nfs4_stid { |
Jeff Layton | 9767feb | 2015-10-01 09:05:50 -0400 | [diff] [blame] | 86 | atomic_t sc_count; |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 87 | #define NFS4_OPEN_STID 1 |
| 88 | #define NFS4_LOCK_STID 2 |
| 89 | #define NFS4_DELEG_STID 4 |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 90 | /* For an open stateid kept around *only* to process close replays: */ |
| 91 | #define NFS4_CLOSED_STID 8 |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 92 | /* For a deleg stateid kept around only to process free_stateid's: */ |
| 93 | #define NFS4_REVOKED_DELEG_STID 16 |
Trond Myklebust | b0fc29d | 2014-07-16 10:31:59 -0400 | [diff] [blame] | 94 | #define NFS4_CLOSED_DELEG_STID 32 |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 95 | #define NFS4_LAYOUT_STID 64 |
Jeff Layton | 9767feb | 2015-10-01 09:05:50 -0400 | [diff] [blame] | 96 | unsigned char sc_type; |
| 97 | stateid_t sc_stateid; |
| 98 | spinlock_t sc_lock; |
| 99 | struct nfs4_client *sc_client; |
| 100 | struct nfs4_file *sc_file; |
| 101 | void (*sc_free)(struct nfs4_stid *); |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 102 | }; |
| 103 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 104 | /* |
| 105 | * Represents a delegation stateid. The nfs4_client holds references to these |
| 106 | * and they are put when it is being destroyed or when the delegation is |
| 107 | * returned by the client: |
| 108 | * |
| 109 | * o 1 reference as long as a delegation is still in force (taken when it's |
| 110 | * alloc'd, put when it's returned or revoked) |
| 111 | * |
| 112 | * o 1 reference as long as a recall rpc is in progress (taken when the lease |
| 113 | * is broken, put when the rpc exits) |
| 114 | * |
| 115 | * o 1 more ephemeral reference for each nfsd thread currently doing something |
| 116 | * with that delegation without holding the cl_lock |
| 117 | * |
| 118 | * If the server attempts to recall a delegation and the client doesn't do so |
| 119 | * before a timeout, the server may also revoke the delegation. In that case, |
| 120 | * the object will either be destroyed (v4.0) or moved to a per-client list of |
| 121 | * revoked delegations (v4.1+). |
| 122 | * |
| 123 | * This object is a superset of the nfs4_stid. |
| 124 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | struct nfs4_delegation { |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 126 | struct nfs4_stid dl_stid; /* must be first field */ |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 127 | struct list_head dl_perfile; |
| 128 | struct list_head dl_perclnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | struct list_head dl_recall_lru; /* delegation recalled */ |
Sachin Bhamare | 8287f00 | 2015-04-27 14:50:14 +0200 | [diff] [blame] | 130 | struct nfs4_clnt_odstate *dl_clnt_odstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | u32 dl_type; |
| 132 | time_t dl_time; |
J. Bruce Fields | b53d40c | 2009-05-01 19:50:00 -0400 | [diff] [blame] | 133 | /* For recall: */ |
J. Bruce Fields | 3aea09d | 2009-05-01 20:11:12 -0400 | [diff] [blame] | 134 | int dl_retries; |
J. Bruce Fields | 227f98d9 | 2010-02-18 08:27:24 -0800 | [diff] [blame] | 135 | struct nfsd4_callback dl_recall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | }; |
| 137 | |
Jeff Layton | 34549ab | 2014-10-01 08:05:22 -0400 | [diff] [blame] | 138 | #define cb_to_delegation(cb) \ |
| 139 | container_of(cb, struct nfs4_delegation, dl_recall) |
| 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | /* client delegation callback info */ |
J. Bruce Fields | c237dc0 | 2009-04-29 19:09:19 -0400 | [diff] [blame] | 142 | struct nfs4_cb_conn { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | /* SETCLIENTID info */ |
Jeff Layton | aa9a4ec | 2009-08-14 12:57:57 -0400 | [diff] [blame] | 144 | struct sockaddr_storage cb_addr; |
Takuma Umeya | 6f3d772 | 2010-12-15 14:09:01 +0900 | [diff] [blame] | 145 | struct sockaddr_storage cb_saddr; |
Jeff Layton | aa9a4ec | 2009-08-14 12:57:57 -0400 | [diff] [blame] | 146 | size_t cb_addrlen; |
J. Bruce Fields | 8b5ce5c | 2010-10-19 17:31:50 -0400 | [diff] [blame] | 147 | u32 cb_prog; /* used only in 4.0 case; |
| 148 | per-session otherwise */ |
Andy Adamson | ab52ae6 | 2009-06-16 04:20:53 +0300 | [diff] [blame] | 149 | u32 cb_ident; /* minorversion 0 only */ |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 150 | struct svc_xprt *cb_xprt; /* minorversion 1 only */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | }; |
| 152 | |
J. Bruce Fields | f459e45 | 2011-09-09 09:06:12 -0400 | [diff] [blame] | 153 | static inline struct nfs4_delegation *delegstateid(struct nfs4_stid *s) |
| 154 | { |
| 155 | return container_of(s, struct nfs4_delegation, dl_stid); |
| 156 | } |
| 157 | |
Andy Adamson | a649637 | 2009-08-28 08:45:01 -0400 | [diff] [blame] | 158 | /* Maximum number of slots per session. 160 is useful for long haul TCP */ |
| 159 | #define NFSD_MAX_SLOTS_PER_SESSION 160 |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 160 | /* Maximum number of operations per session compound */ |
| 161 | #define NFSD_MAX_OPS_PER_COMPOUND 16 |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 162 | /* Maximum session per slot cache size */ |
J. Bruce Fields | 24906f3 | 2014-03-12 15:17:18 -0400 | [diff] [blame] | 163 | #define NFSD_SLOT_CACHE_SIZE 2048 |
Andy Adamson | a649637 | 2009-08-28 08:45:01 -0400 | [diff] [blame] | 164 | /* Maximum number of NFSD_SLOT_CACHE_SIZE slots per session */ |
| 165 | #define NFSD_CACHE_SIZE_SLOTS_PER_SESSION 32 |
| 166 | #define NFSD_MAX_MEM_PER_SESSION \ |
| 167 | (NFSD_CACHE_SIZE_SLOTS_PER_SESSION * NFSD_SLOT_CACHE_SIZE) |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 168 | |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 169 | struct nfsd4_slot { |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 170 | u32 sl_seqid; |
| 171 | __be32 sl_status; |
| 172 | u32 sl_datalen; |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 173 | u16 sl_opcnt; |
| 174 | #define NFSD4_SLOT_INUSE (1 << 0) |
| 175 | #define NFSD4_SLOT_CACHETHIS (1 << 1) |
J. Bruce Fields | bf5c43c | 2012-02-13 16:56:19 -0500 | [diff] [blame] | 176 | #define NFSD4_SLOT_INITIALIZED (1 << 2) |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 177 | u8 sl_flags; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 178 | char sl_data[]; |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 179 | }; |
| 180 | |
Alexandros Batsakis | 6c18ba9 | 2009-06-16 04:19:13 +0300 | [diff] [blame] | 181 | struct nfsd4_channel_attrs { |
| 182 | u32 headerpadsz; |
| 183 | u32 maxreq_sz; |
| 184 | u32 maxresp_sz; |
| 185 | u32 maxresp_cached; |
| 186 | u32 maxops; |
| 187 | u32 maxreqs; |
| 188 | u32 nr_rdma_attrs; |
| 189 | u32 rdma_attrs; |
| 190 | }; |
| 191 | |
J. Bruce Fields | acb2887 | 2012-03-27 14:50:26 -0400 | [diff] [blame] | 192 | struct nfsd4_cb_sec { |
J. Bruce Fields | 12fc3e9 | 2012-11-05 16:01:48 -0500 | [diff] [blame] | 193 | u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */ |
Eric W. Biederman | 03bc6d1 | 2013-02-02 06:24:49 -0800 | [diff] [blame] | 194 | kuid_t uid; |
| 195 | kgid_t gid; |
J. Bruce Fields | acb2887 | 2012-03-27 14:50:26 -0400 | [diff] [blame] | 196 | }; |
| 197 | |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 198 | struct nfsd4_create_session { |
| 199 | clientid_t clientid; |
| 200 | struct nfs4_sessionid sessionid; |
| 201 | u32 seqid; |
| 202 | u32 flags; |
| 203 | struct nfsd4_channel_attrs fore_channel; |
| 204 | struct nfsd4_channel_attrs back_channel; |
| 205 | u32 callback_prog; |
J. Bruce Fields | acb2887 | 2012-03-27 14:50:26 -0400 | [diff] [blame] | 206 | struct nfsd4_cb_sec cb_sec; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 207 | }; |
| 208 | |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 209 | struct nfsd4_backchannel_ctl { |
| 210 | u32 bc_cb_program; |
| 211 | struct nfsd4_cb_sec bc_cb_sec; |
| 212 | }; |
| 213 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 214 | struct nfsd4_bind_conn_to_session { |
| 215 | struct nfs4_sessionid sessionid; |
| 216 | u32 dir; |
| 217 | }; |
| 218 | |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 219 | /* The single slot clientid cache structure */ |
| 220 | struct nfsd4_clid_slot { |
| 221 | u32 sl_seqid; |
| 222 | __be32 sl_status; |
| 223 | struct nfsd4_create_session sl_cr_ses; |
| 224 | }; |
| 225 | |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 226 | struct nfsd4_conn { |
| 227 | struct list_head cn_persession; |
| 228 | struct svc_xprt *cn_xprt; |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 229 | struct svc_xpt_user cn_xpt_user; |
| 230 | struct nfsd4_session *cn_session; |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 231 | /* CDFC4_FORE, CDFC4_BACK: */ |
| 232 | unsigned char cn_flags; |
| 233 | }; |
| 234 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 235 | /* |
| 236 | * Representation of a v4.1+ session. These are refcounted in a similar fashion |
| 237 | * to the nfs4_client. References are only taken when the server is actively |
| 238 | * working on the object (primarily during the processing of compounds). |
| 239 | */ |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 240 | struct nfsd4_session { |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 241 | atomic_t se_ref; |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 242 | struct list_head se_hash; /* hash by sessionid */ |
| 243 | struct list_head se_perclnt; |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 244 | /* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */ |
| 245 | #define NFS4_SESSION_DEAD 0x010 |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 246 | u32 se_flags; |
Benny Halevy | 07cd490 | 2010-05-12 00:13:41 +0300 | [diff] [blame] | 247 | struct nfs4_client *se_client; |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 248 | struct nfs4_sessionid se_sessionid; |
Alexandros Batsakis | 6c18ba9 | 2009-06-16 04:19:13 +0300 | [diff] [blame] | 249 | struct nfsd4_channel_attrs se_fchannel; |
| 250 | struct nfsd4_channel_attrs se_bchannel; |
J. Bruce Fields | acb2887 | 2012-03-27 14:50:26 -0400 | [diff] [blame] | 251 | struct nfsd4_cb_sec se_cb_sec; |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 252 | struct list_head se_conns; |
J. Bruce Fields | 8b5ce5c | 2010-10-19 17:31:50 -0400 | [diff] [blame] | 253 | u32 se_cb_prog; |
J. Bruce Fields | ac7c46f | 2010-06-14 19:01:57 -0400 | [diff] [blame] | 254 | u32 se_cb_seq_nr; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 255 | struct nfsd4_slot *se_slots[]; /* forward channel slots */ |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 256 | }; |
| 257 | |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 258 | /* formatted contents of nfs4_sessionid */ |
| 259 | struct nfsd4_sessionid { |
| 260 | clientid_t clientid; |
| 261 | u32 sequence; |
| 262 | u32 reserved; |
| 263 | }; |
| 264 | |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 265 | #define HEXDIR_LEN 33 /* hex version of 16 byte md5 of cl_name plus '\0' */ |
| 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | /* |
| 268 | * struct nfs4_client - one per client. Clientids live here. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | * |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 270 | * The initial object created by an NFS client using SETCLIENTID (for NFSv4.0) |
| 271 | * or EXCHANGE_ID (for NFSv4.1+). These objects are refcounted and timestamped. |
| 272 | * Each nfsd_net_ns object contains a set of these and they are tracked via |
| 273 | * short and long form clientid. They are hashed and searched for under the |
| 274 | * per-nfsd_net client_lock spinlock. |
| 275 | * |
| 276 | * References to it are only held during the processing of compounds, and in |
| 277 | * certain other operations. In their "resting state" they have a refcount of |
| 278 | * 0. If they are not renewed within a lease period, they become eligible for |
| 279 | * destruction by the laundromat. |
| 280 | * |
| 281 | * These objects can also be destroyed prematurely by the fault injection code, |
| 282 | * or if the client sends certain forms of SETCLIENTID or EXCHANGE_ID updates. |
| 283 | * Care is taken *not* to do this however when the objects have an elevated |
| 284 | * refcount. |
| 285 | * |
| 286 | * o Each nfs4_client is hashed by clientid |
| 287 | * |
| 288 | * o Each nfs4_clients is also hashed by name (the opaque quantity initially |
| 289 | * sent by the client to identify itself). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | * |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 291 | * o cl_perclient list is used to ensure no dangling stateowner references |
| 292 | * when we expire the nfs4_client |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | */ |
| 294 | struct nfs4_client { |
| 295 | struct list_head cl_idhash; /* hash by cl_clientid.id */ |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 296 | struct rb_node cl_namenode; /* link into by-name trees */ |
Trond Myklebust | d4f0489 | 2014-07-29 21:34:36 -0400 | [diff] [blame] | 297 | struct list_head *cl_ownerstr_hashtbl; |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 298 | struct list_head cl_openowners; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 299 | struct idr cl_stateids; /* stateid lookup */ |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 300 | struct list_head cl_delegations; |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 301 | struct list_head cl_revoked; /* unacknowledged, revoked 4.1 state */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | struct list_head cl_lru; /* tail queue */ |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 303 | #ifdef CONFIG_NFSD_PNFS |
| 304 | struct list_head cl_lo_states; /* outstanding layout states */ |
| 305 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | struct xdr_netobj cl_name; /* id generated by client */ |
| 307 | nfs4_verifier cl_verifier; /* generated by client */ |
| 308 | time_t cl_time; /* time of last lease renewal */ |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 309 | struct sockaddr_storage cl_addr; /* client ipaddress */ |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 310 | bool cl_mach_cred; /* SP4_MACH_CRED in force */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | struct svc_cred cl_cred; /* setclientid principal */ |
| 312 | clientid_t cl_clientid; /* generated by server */ |
| 313 | nfs4_verifier cl_confirm; /* generated by server */ |
J. Bruce Fields | 8323c3b | 2010-10-19 19:36:51 -0400 | [diff] [blame] | 314 | u32 cl_minorversion; |
Marc Eshel | 9fb8707 | 2009-04-03 08:27:46 +0300 | [diff] [blame] | 315 | |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 316 | /* for v4.0 and v4.1 callbacks: */ |
| 317 | struct nfs4_cb_conn cl_cb_conn; |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 318 | #define NFSD4_CLIENT_CB_UPDATE (0) |
| 319 | #define NFSD4_CLIENT_CB_KILL (1) |
| 320 | #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ |
| 321 | #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 322 | #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ |
Jeff Layton | d682e75 | 2014-09-12 16:40:21 -0400 | [diff] [blame] | 323 | #define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 324 | #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ |
| 325 | 1 << NFSD4_CLIENT_CB_KILL) |
| 326 | unsigned long cl_flags; |
J. Bruce Fields | c6bb3ca | 2012-11-01 16:31:02 -0400 | [diff] [blame] | 327 | struct rpc_cred *cl_cb_cred; |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 328 | struct rpc_clnt *cl_cb_client; |
J. Bruce Fields | 6ff8da0 | 2010-06-04 20:04:45 -0400 | [diff] [blame] | 329 | u32 cl_cb_ident; |
J. Bruce Fields | 77a3569 | 2010-04-30 18:51:44 -0400 | [diff] [blame] | 330 | #define NFSD4_CB_UP 0 |
| 331 | #define NFSD4_CB_UNKNOWN 1 |
| 332 | #define NFSD4_CB_DOWN 2 |
Benny Halevy | 5423732 | 2011-10-19 19:12:58 -0700 | [diff] [blame] | 333 | #define NFSD4_CB_FAULT 3 |
J. Bruce Fields | 77a3569 | 2010-04-30 18:51:44 -0400 | [diff] [blame] | 334 | int cl_cb_state; |
J. Bruce Fields | cee277d | 2010-05-26 17:52:14 -0400 | [diff] [blame] | 335 | struct nfsd4_callback cl_cb_null; |
J. Bruce Fields | edd7678 | 2010-06-14 22:26:31 -0400 | [diff] [blame] | 336 | struct nfsd4_session *cl_cb_session; |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 337 | |
J. Bruce Fields | 6ff8da0 | 2010-06-04 20:04:45 -0400 | [diff] [blame] | 338 | /* for all client information that callback code might need: */ |
| 339 | spinlock_t cl_lock; |
| 340 | |
Marc Eshel | 9fb8707 | 2009-04-03 08:27:46 +0300 | [diff] [blame] | 341 | /* for nfs41 */ |
| 342 | struct list_head cl_sessions; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 343 | struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 344 | u32 cl_exchange_flags; |
Benny Halevy | 46583e2 | 2010-05-12 00:13:29 +0300 | [diff] [blame] | 345 | /* number of rpc's in progress over an associated session: */ |
| 346 | atomic_t cl_refcount; |
Andrew Elble | ed94164 | 2016-06-15 12:52:09 -0400 | [diff] [blame] | 347 | struct nfs4_op_map cl_spo_must_allow; |
Andy Adamson | 38524ab | 2009-09-10 12:25:59 +0300 | [diff] [blame] | 348 | |
| 349 | /* for nfs41 callbacks */ |
Ricardo Labiaga | 199ff35 | 2009-09-10 12:26:25 +0300 | [diff] [blame] | 350 | /* We currently support a single back channel with a single slot */ |
| 351 | unsigned long cl_cb_slot_busy; |
Ricardo Labiaga | 199ff35 | 2009-09-10 12:26:25 +0300 | [diff] [blame] | 352 | struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ |
| 353 | /* wait here for slots */ |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 354 | struct net *net; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | }; |
| 356 | |
| 357 | /* struct nfs4_client_reset |
| 358 | * one per old client. Populates reset_str_hashtbl. Filled from conf_id_hashtbl |
| 359 | * upon lease reset, or from upcall to state_daemon (to read in state |
| 360 | * from non-volitile storage) upon reboot. |
| 361 | */ |
| 362 | struct nfs4_client_reclaim { |
| 363 | struct list_head cr_strhash; /* hash by cr_name */ |
Jeff Layton | 0ce0c2b | 2012-11-12 15:00:55 -0500 | [diff] [blame] | 364 | struct nfs4_client *cr_clp; /* pointer to associated clp */ |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 365 | char cr_recdir[HEXDIR_LEN]; /* recover dir */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | }; |
| 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | /* A reasonable value for REPLAY_ISIZE was estimated as follows: |
| 369 | * The OPEN response, typically the largest, requires |
| 370 | * 4(status) + 8(stateid) + 20(changeinfo) + 4(rflags) + 8(verifier) + |
| 371 | * 4(deleg. type) + 8(deleg. stateid) + 4(deleg. recall flag) + |
| 372 | * 20(deleg. space limit) + ~32(deleg. ace) = 112 bytes |
| 373 | */ |
| 374 | |
| 375 | #define NFSD4_REPLAY_ISIZE 112 |
| 376 | |
| 377 | /* |
| 378 | * Replay buffer, where the result of the last seqid-mutating operation |
| 379 | * is cached. |
| 380 | */ |
| 381 | struct nfs4_replay { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 382 | __be32 rp_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | unsigned int rp_buflen; |
| 384 | char *rp_buf; |
J. Bruce Fields | a4773c0 | 2009-02-02 17:23:10 -0500 | [diff] [blame] | 385 | struct knfsd_fh rp_openfh; |
Jeff Layton | 58fb12e | 2014-07-29 21:34:27 -0400 | [diff] [blame] | 386 | struct mutex rp_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | char rp_ibuf[NFSD4_REPLAY_ISIZE]; |
| 388 | }; |
| 389 | |
Jeff Layton | 6b180f0 | 2014-07-29 21:34:26 -0400 | [diff] [blame] | 390 | struct nfs4_stateowner; |
| 391 | |
| 392 | struct nfs4_stateowner_operations { |
Jeff Layton | 8f4b54c | 2014-07-29 21:34:29 -0400 | [diff] [blame] | 393 | void (*so_unhash)(struct nfs4_stateowner *); |
Jeff Layton | 6b180f0 | 2014-07-29 21:34:26 -0400 | [diff] [blame] | 394 | void (*so_free)(struct nfs4_stateowner *); |
| 395 | }; |
| 396 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 397 | /* |
| 398 | * A core object that represents either an open or lock owner. The object and |
| 399 | * lock owner objects have one of these embedded within them. Refcounts and |
| 400 | * other fields common to both owner types are contained within these |
| 401 | * structures. |
| 402 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | struct nfs4_stateowner { |
Jeff Layton | 6b180f0 | 2014-07-29 21:34:26 -0400 | [diff] [blame] | 404 | struct list_head so_strhash; |
| 405 | struct list_head so_stateids; |
| 406 | struct nfs4_client *so_client; |
| 407 | const struct nfs4_stateowner_operations *so_ops; |
J. Bruce Fields | 83e452f | 2014-07-31 16:10:08 -0400 | [diff] [blame] | 408 | /* after increment in nfsd4_bump_seqid, represents the next |
NeilBrown | 7fb64ce | 2005-07-07 17:59:20 -0700 | [diff] [blame] | 409 | * sequence id expected from the client: */ |
Jeff Layton | 6b180f0 | 2014-07-29 21:34:26 -0400 | [diff] [blame] | 410 | atomic_t so_count; |
| 411 | u32 so_seqid; |
| 412 | struct xdr_netobj so_owner; /* open owner name */ |
| 413 | struct nfs4_replay so_replay; |
| 414 | bool so_is_open_owner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | }; |
| 416 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 417 | /* |
| 418 | * When a file is opened, the client provides an open state owner opaque string |
| 419 | * that indicates the "owner" of that open. These objects are refcounted. |
| 420 | * References to it are held by each open state associated with it. This object |
| 421 | * is a superset of the nfs4_stateowner struct. |
| 422 | */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 423 | struct nfs4_openowner { |
| 424 | struct nfs4_stateowner oo_owner; /* must be first field */ |
| 425 | struct list_head oo_perclient; |
J. Bruce Fields | b31b30e | 2011-09-28 11:47:20 -0400 | [diff] [blame] | 426 | /* |
| 427 | * We keep around openowners a little while after last close, |
| 428 | * which saves clients from having to confirm, and allows us to |
| 429 | * handle close replays if they come soon enough. The close_lru |
| 430 | * is a list of such openowners, to be reaped by the laundromat |
| 431 | * thread eventually if they remain unused: |
| 432 | */ |
| 433 | struct list_head oo_close_lru; |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 434 | struct nfs4_ol_stateid *oo_last_closed_stid; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 435 | time_t oo_time; /* time of placement on so_close_lru */ |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 436 | #define NFS4_OO_CONFIRMED 1 |
| 437 | unsigned char oo_flags; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 438 | }; |
| 439 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 440 | /* |
| 441 | * Represents a generic "lockowner". Similar to an openowner. References to it |
| 442 | * are held by the lock stateids that are created on its behalf. This object is |
Jeff Layton | 76d348f | 2016-09-16 16:28:24 -0400 | [diff] [blame] | 443 | * a superset of the nfs4_stateowner struct. |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 444 | */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 445 | struct nfs4_lockowner { |
Jeff Layton | 76d348f | 2016-09-16 16:28:24 -0400 | [diff] [blame] | 446 | struct nfs4_stateowner lo_owner; /* must be first element */ |
| 447 | struct list_head lo_blocked; /* blocked file_locks */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 448 | }; |
| 449 | |
| 450 | static inline struct nfs4_openowner * openowner(struct nfs4_stateowner *so) |
| 451 | { |
| 452 | return container_of(so, struct nfs4_openowner, oo_owner); |
| 453 | } |
| 454 | |
| 455 | static inline struct nfs4_lockowner * lockowner(struct nfs4_stateowner *so) |
| 456 | { |
| 457 | return container_of(so, struct nfs4_lockowner, lo_owner); |
| 458 | } |
| 459 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 460 | /* |
Sachin Bhamare | 8287f00 | 2015-04-27 14:50:14 +0200 | [diff] [blame] | 461 | * Per-client state indicating no. of opens and outstanding delegations |
| 462 | * on a file from a particular client.'od' stands for 'open & delegation' |
| 463 | */ |
| 464 | struct nfs4_clnt_odstate { |
| 465 | struct nfs4_client *co_client; |
| 466 | struct nfs4_file *co_file; |
| 467 | struct list_head co_perfile; |
| 468 | atomic_t co_odcount; |
| 469 | }; |
| 470 | |
| 471 | /* |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 472 | * nfs4_file: a file opened by some number of (open) nfs4_stateowners. |
| 473 | * |
Jeff Layton | ccc6398 | 2014-10-16 08:49:37 -0400 | [diff] [blame] | 474 | * These objects are global. nfsd keeps one instance of a nfs4_file per |
| 475 | * filehandle (though it may keep multiple file descriptors for each). Each |
| 476 | * inode can have multiple filehandles associated with it, so there is |
| 477 | * (potentially) a many to one relationship between this struct and struct |
| 478 | * inode. |
| 479 | * |
| 480 | * These are hashed by filehandle in the file_hashtbl, which is protected by |
| 481 | * the global state_lock spinlock. |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 482 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | struct nfs4_file { |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 484 | atomic_t fi_ref; |
Trond Myklebust | 1d31a25 | 2014-07-10 14:07:25 -0400 | [diff] [blame] | 485 | spinlock_t fi_lock; |
Jeff Layton | ccc6398 | 2014-10-16 08:49:37 -0400 | [diff] [blame] | 486 | struct hlist_node fi_hash; /* hash on fi_fhandle */ |
NeilBrown | 8beefa2 | 2005-06-23 22:03:08 -0700 | [diff] [blame] | 487 | struct list_head fi_stateids; |
Jeff Layton | 5b095e9 | 2014-10-23 08:01:02 -0400 | [diff] [blame] | 488 | union { |
| 489 | struct list_head fi_delegations; |
| 490 | struct rcu_head fi_rcu; |
| 491 | }; |
Sachin Bhamare | 8287f00 | 2015-04-27 14:50:14 +0200 | [diff] [blame] | 492 | struct list_head fi_clnt_odstate; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 493 | /* One each for O_RDONLY, O_WRONLY, O_RDWR: */ |
| 494 | struct file * fi_fds[3]; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 495 | /* |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 496 | * Each open or lock stateid contributes 0-4 to the counts |
| 497 | * below depending on which bits are set in st_access_bitmap: |
| 498 | * 1 to fi_access[O_RDONLY] if NFS4_SHARE_ACCES_READ is set |
| 499 | * + 1 to fi_access[O_WRONLY] if NFS4_SHARE_ACCESS_WRITE is set |
| 500 | * + 1 to both of the above if NFS4_SHARE_ACCESS_BOTH is set. |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 501 | */ |
J. Bruce Fields | 9ae78bc | 2011-03-17 12:52:33 -0400 | [diff] [blame] | 502 | atomic_t fi_access[2]; |
Jeff Layton | baeb4ff | 2014-07-10 14:07:34 -0400 | [diff] [blame] | 503 | u32 fi_share_deny; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 504 | struct file *fi_deleg_file; |
Jeff Layton | 67db103 | 2014-12-13 09:11:40 -0500 | [diff] [blame] | 505 | int fi_delegees; |
Trond Myklebust | e2cf80d | 2014-07-23 16:17:38 -0400 | [diff] [blame] | 506 | struct knfsd_fh fi_fhandle; |
Meelap Shah | 47f9940 | 2007-07-17 04:04:40 -0700 | [diff] [blame] | 507 | bool fi_had_conflict; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 508 | #ifdef CONFIG_NFSD_PNFS |
| 509 | struct list_head fi_lo_states; |
Christoph Hellwig | c5c707f | 2014-09-23 12:38:48 +0200 | [diff] [blame] | 510 | atomic_t fi_lo_recalls; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 511 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | }; |
| 513 | |
Jeff Layton | 14a571a | 2014-08-05 15:13:30 -0400 | [diff] [blame] | 514 | /* |
| 515 | * A generic struct representing either a open or lock stateid. The nfs4_client |
| 516 | * holds a reference to each of these objects, and they in turn hold a |
| 517 | * reference to their respective stateowners. The client's reference is |
| 518 | * released in response to a close or unlock (depending on whether it's an open |
| 519 | * or lock stateid) or when the client is being destroyed. |
| 520 | * |
| 521 | * In the case of v4.0 open stateids, these objects are preserved for a little |
| 522 | * while after close in order to handle CLOSE replays. Those are eventually |
| 523 | * reclaimed via a LRU scheme by the laundromat. |
| 524 | * |
| 525 | * This object is a superset of the nfs4_stid. "ol" stands for "Open or Lock". |
| 526 | * Better suggestions welcome. |
| 527 | */ |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 528 | struct nfs4_ol_stateid { |
Jeff Layton | 35a92fe | 2015-09-17 07:47:08 -0400 | [diff] [blame] | 529 | struct nfs4_stid st_stid; |
| 530 | struct list_head st_perfile; |
| 531 | struct list_head st_perstateowner; |
| 532 | struct list_head st_locks; |
| 533 | struct nfs4_stateowner *st_stateowner; |
| 534 | struct nfs4_clnt_odstate *st_clnt_odstate; |
| 535 | unsigned char st_access_bmap; |
| 536 | unsigned char st_deny_bmap; |
| 537 | struct nfs4_ol_stateid *st_openstp; |
Oleg Drokin | feb9dad | 2016-06-14 23:28:04 -0400 | [diff] [blame] | 538 | struct mutex st_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | }; |
| 540 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 541 | static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) |
| 542 | { |
| 543 | return container_of(s, struct nfs4_ol_stateid, st_stid); |
| 544 | } |
| 545 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 546 | struct nfs4_layout_stateid { |
| 547 | struct nfs4_stid ls_stid; |
| 548 | struct list_head ls_perclnt; |
| 549 | struct list_head ls_perfile; |
| 550 | spinlock_t ls_lock; |
| 551 | struct list_head ls_layouts; |
| 552 | u32 ls_layout_type; |
Christoph Hellwig | c5c707f | 2014-09-23 12:38:48 +0200 | [diff] [blame] | 553 | struct file *ls_file; |
| 554 | struct nfsd4_callback ls_recall; |
| 555 | stateid_t ls_recall_sid; |
| 556 | bool ls_recalled; |
Jeff Layton | cc8a553 | 2015-09-17 07:58:24 -0400 | [diff] [blame] | 557 | struct mutex ls_mutex; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 558 | }; |
| 559 | |
| 560 | static inline struct nfs4_layout_stateid *layoutstateid(struct nfs4_stid *s) |
| 561 | { |
| 562 | return container_of(s, struct nfs4_layout_stateid, ls_stid); |
| 563 | } |
| 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | /* flags for preprocess_seqid_op() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | #define RD_STATE 0x00000010 |
| 567 | #define WR_STATE 0x00000020 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
Christoph Hellwig | 326129d | 2014-09-24 12:19:17 +0200 | [diff] [blame] | 569 | enum nfsd4_cb_op { |
| 570 | NFSPROC4_CLNT_CB_NULL = 0, |
| 571 | NFSPROC4_CLNT_CB_RECALL, |
Christoph Hellwig | c5c707f | 2014-09-23 12:38:48 +0200 | [diff] [blame] | 572 | NFSPROC4_CLNT_CB_LAYOUT, |
Christoph Hellwig | 326129d | 2014-09-24 12:19:17 +0200 | [diff] [blame] | 573 | NFSPROC4_CLNT_CB_SEQUENCE, |
Jeff Layton | a188620e | 2016-09-16 16:28:23 -0400 | [diff] [blame] | 574 | NFSPROC4_CLNT_CB_NOTIFY_LOCK, |
Christoph Hellwig | 326129d | 2014-09-24 12:19:17 +0200 | [diff] [blame] | 575 | }; |
| 576 | |
Jeff Layton | 14b7f4a | 2016-05-05 06:53:47 -0400 | [diff] [blame] | 577 | /* Returns true iff a is later than b: */ |
| 578 | static inline bool nfsd4_stateid_generation_after(stateid_t *a, stateid_t *b) |
| 579 | { |
| 580 | return (s32)(a->si_generation - b->si_generation) > 0; |
| 581 | } |
Christoph Hellwig | 326129d | 2014-09-24 12:19:17 +0200 | [diff] [blame] | 582 | |
Jeff Layton | 76d348f | 2016-09-16 16:28:24 -0400 | [diff] [blame] | 583 | /* |
| 584 | * When a client tries to get a lock on a file, we set one of these objects |
| 585 | * on the blocking lock. When the lock becomes free, we can then issue a |
| 586 | * CB_NOTIFY_LOCK to the server. |
| 587 | */ |
Jeff Layton | a188620e | 2016-09-16 16:28:23 -0400 | [diff] [blame] | 588 | struct nfsd4_blocked_lock { |
Jeff Layton | 76d348f | 2016-09-16 16:28:24 -0400 | [diff] [blame] | 589 | struct list_head nbl_list; |
Jeff Layton | 7919d0a | 2016-09-16 16:28:25 -0400 | [diff] [blame] | 590 | struct list_head nbl_lru; |
| 591 | unsigned long nbl_time; |
Jeff Layton | a188620e | 2016-09-16 16:28:23 -0400 | [diff] [blame] | 592 | struct file_lock nbl_lock; |
| 593 | struct knfsd_fh nbl_fh; |
| 594 | struct nfsd4_callback nbl_cb; |
| 595 | }; |
| 596 | |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 597 | struct nfsd4_compound_state; |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 598 | struct nfsd_net; |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 599 | |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 600 | extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp, |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 601 | struct nfsd4_compound_state *cstate, struct svc_fh *fhp, |
| 602 | stateid_t *stateid, int flags, struct file **filp, bool *tmp_file); |
Christoph Hellwig | cd61c52 | 2014-08-14 08:44:57 +0200 | [diff] [blame] | 603 | __be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate, |
| 604 | stateid_t *stateid, unsigned char typemask, |
| 605 | struct nfs4_stid **s, struct nfsd_net *nn); |
Kinglong Mee | d19fb70 | 2017-01-18 19:04:42 +0800 | [diff] [blame] | 606 | struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab, |
| 607 | void (*sc_free)(struct nfs4_stid *)); |
Christoph Hellwig | cd61c52 | 2014-08-14 08:44:57 +0200 | [diff] [blame] | 608 | void nfs4_unhash_stid(struct nfs4_stid *s); |
Trond Myklebust | 6011695 | 2014-07-29 21:34:06 -0400 | [diff] [blame] | 609 | void nfs4_put_stid(struct nfs4_stid *s); |
Jeff Layton | 9767feb | 2015-10-01 09:05:50 -0400 | [diff] [blame] | 610 | void nfs4_inc_and_copy_stateid(stateid_t *dst, struct nfs4_stid *stid); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 611 | void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *); |
| 612 | extern void nfs4_release_reclaim(struct nfsd_net *); |
| 613 | extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir, |
| 614 | struct nfsd_net *nn); |
Trond Myklebust | 0fe492d | 2014-06-30 11:48:47 -0400 | [diff] [blame] | 615 | extern __be32 nfs4_check_open_reclaim(clientid_t *clid, |
| 616 | struct nfsd4_compound_state *cstate, struct nfsd_net *nn); |
J. Bruce Fields | 80fc015 | 2009-09-15 18:07:35 -0400 | [diff] [blame] | 617 | extern int set_callback_cred(void); |
Kinglong Mee | f7d1ddb | 2017-02-05 09:57:07 +0800 | [diff] [blame] | 618 | extern void cleanup_callback_cred(void); |
J. Bruce Fields | 5a3c9d7 | 2010-10-19 17:56:52 -0400 | [diff] [blame] | 619 | extern void nfsd4_probe_callback(struct nfs4_client *clp); |
J. Bruce Fields | 84f5f7c | 2010-12-09 15:52:19 -0500 | [diff] [blame] | 620 | extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); |
J. Bruce Fields | 5a3c9d7 | 2010-10-19 17:56:52 -0400 | [diff] [blame] | 621 | extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); |
Christoph Hellwig | f0b5de1 | 2014-09-24 12:19:18 +0200 | [diff] [blame] | 622 | extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, |
Julia Lawall | c4cb897 | 2015-11-21 22:57:39 +0100 | [diff] [blame] | 623 | const struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op); |
Christoph Hellwig | f0b5de1 | 2014-09-24 12:19:18 +0200 | [diff] [blame] | 624 | extern void nfsd4_run_cb(struct nfsd4_callback *cb); |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 625 | extern int nfsd4_create_callback_queue(void); |
| 626 | extern void nfsd4_destroy_callback_queue(void); |
J. Bruce Fields | 6ff8da0 | 2010-06-04 20:04:45 -0400 | [diff] [blame] | 627 | extern void nfsd4_shutdown_callback(struct nfs4_client *); |
Jeff Layton | 02e1215 | 2014-07-16 10:31:57 -0400 | [diff] [blame] | 628 | extern void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 629 | extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name, |
| 630 | struct nfsd_net *nn); |
| 631 | extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | |
Christoph Hellwig | e6ba76e | 2014-08-14 08:50:16 +0200 | [diff] [blame] | 633 | struct nfs4_file *find_file(struct knfsd_fh *fh); |
| 634 | void put_nfs4_file(struct nfs4_file *fi); |
| 635 | static inline void get_nfs4_file(struct nfs4_file *fi) |
| 636 | { |
| 637 | atomic_inc(&fi->fi_ref); |
| 638 | } |
Christoph Hellwig | 4d227fc | 2014-08-17 07:40:00 -0500 | [diff] [blame] | 639 | struct file *find_any_file(struct nfs4_file *f); |
Christoph Hellwig | e6ba76e | 2014-08-14 08:50:16 +0200 | [diff] [blame] | 640 | |
Jeff Layton | 7f5ef2e | 2014-09-12 16:40:21 -0400 | [diff] [blame] | 641 | /* grace period management */ |
| 642 | void nfsd4_end_grace(struct nfsd_net *nn); |
| 643 | |
Jeff Layton | 2a4317c | 2012-03-21 16:42:43 -0400 | [diff] [blame] | 644 | /* nfs4recover operations */ |
| 645 | extern int nfsd4_client_tracking_init(struct net *net); |
| 646 | extern void nfsd4_client_tracking_exit(struct net *net); |
| 647 | extern void nfsd4_client_record_create(struct nfs4_client *clp); |
| 648 | extern void nfsd4_client_record_remove(struct nfs4_client *clp); |
| 649 | extern int nfsd4_client_record_check(struct nfs4_client *clp); |
Jeff Layton | 919b804 | 2014-09-12 16:40:20 -0400 | [diff] [blame] | 650 | extern void nfsd4_record_grace_done(struct nfsd_net *nn); |
Bryan Schumaker | f3c7521 | 2012-11-27 09:35:10 -0500 | [diff] [blame] | 651 | |
| 652 | /* nfs fault injection functions */ |
| 653 | #ifdef CONFIG_NFSD_FAULT_INJECTION |
| 654 | int nfsd_fault_inject_init(void); |
| 655 | void nfsd_fault_inject_cleanup(void); |
Bryan Schumaker | 8ce54e0 | 2012-11-29 11:40:43 -0500 | [diff] [blame] | 656 | |
Jeff Layton | 285abde | 2014-07-30 08:27:24 -0400 | [diff] [blame] | 657 | u64 nfsd_inject_print_clients(void); |
| 658 | u64 nfsd_inject_forget_client(struct sockaddr_storage *, size_t); |
| 659 | u64 nfsd_inject_forget_clients(u64); |
Jeff Layton | a0926d1 | 2014-07-30 08:27:18 -0400 | [diff] [blame] | 660 | |
Jeff Layton | 285abde | 2014-07-30 08:27:24 -0400 | [diff] [blame] | 661 | u64 nfsd_inject_print_locks(void); |
| 662 | u64 nfsd_inject_forget_client_locks(struct sockaddr_storage *, size_t); |
| 663 | u64 nfsd_inject_forget_locks(u64); |
Jeff Layton | 016200c | 2014-07-30 08:27:21 -0400 | [diff] [blame] | 664 | |
Jeff Layton | 285abde | 2014-07-30 08:27:24 -0400 | [diff] [blame] | 665 | u64 nfsd_inject_print_openowners(void); |
| 666 | u64 nfsd_inject_forget_client_openowners(struct sockaddr_storage *, size_t); |
| 667 | u64 nfsd_inject_forget_openowners(u64); |
Jeff Layton | 82e05ef | 2014-07-30 08:27:22 -0400 | [diff] [blame] | 668 | |
Jeff Layton | 285abde | 2014-07-30 08:27:24 -0400 | [diff] [blame] | 669 | u64 nfsd_inject_print_delegations(void); |
| 670 | u64 nfsd_inject_forget_client_delegations(struct sockaddr_storage *, size_t); |
| 671 | u64 nfsd_inject_forget_delegations(u64); |
| 672 | u64 nfsd_inject_recall_client_delegations(struct sockaddr_storage *, size_t); |
| 673 | u64 nfsd_inject_recall_delegations(u64); |
Bryan Schumaker | f3c7521 | 2012-11-27 09:35:10 -0500 | [diff] [blame] | 674 | #else /* CONFIG_NFSD_FAULT_INJECTION */ |
| 675 | static inline int nfsd_fault_inject_init(void) { return 0; } |
| 676 | static inline void nfsd_fault_inject_cleanup(void) {} |
| 677 | #endif /* CONFIG_NFSD_FAULT_INJECTION */ |
| 678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | #endif /* NFSD4_STATE_H */ |