Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/callback_proc.c |
| 3 | * |
| 4 | * Copyright (C) 2004 Trond Myklebust |
| 5 | * |
| 6 | * NFSv4 callback procedures |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/nfs4.h> |
| 9 | #include <linux/nfs_fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 10 | #include <linux/slab.h> |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 11 | #include <linux/rcupdate.h> |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 12 | #include "nfs4_fs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include "callback.h" |
| 14 | #include "delegation.h" |
David Howells | 24c8dbb | 2006-08-22 20:06:10 -0400 | [diff] [blame] | 15 | #include "internal.h" |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 16 | #include "pnfs.h" |
Trond Myklebust | 73e39aa | 2012-11-26 12:49:34 -0500 | [diff] [blame] | 17 | #include "nfs4session.h" |
Trond Myklebust | ca8acf8 | 2013-08-13 10:36:56 -0400 | [diff] [blame] | 18 | #include "nfs4trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 21 | |
| 22 | __be32 nfs4_callback_getattr(struct cb_getattrargs *args, |
| 23 | struct cb_getattrres *res, |
| 24 | struct cb_process_state *cps) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | struct nfs_delegation *delegation; |
| 27 | struct nfs_inode *nfsi; |
| 28 | struct inode *inode; |
Chuck Lever | 1d98fe6 | 2007-12-10 14:57:23 -0500 | [diff] [blame] | 29 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 30 | res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
| 31 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | goto out; |
Chuck Lever | 1d98fe6 | 2007-12-10 14:57:23 -0500 | [diff] [blame] | 33 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 34 | res->bitmap[0] = res->bitmap[1] = 0; |
| 35 | res->status = htonl(NFS4ERR_BADHANDLE); |
Chuck Lever | 1d98fe6 | 2007-12-10 14:57:23 -0500 | [diff] [blame] | 36 | |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 37 | dprintk_rcu("NFS: GETATTR callback request from %s\n", |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 38 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
| 39 | |
| 40 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); |
Trond Myklebust | 7cd1486 | 2015-08-20 20:07:54 -0500 | [diff] [blame] | 41 | if (inode == NULL) { |
Trond Myklebust | 249b2ee | 2015-08-20 20:43:14 -0500 | [diff] [blame] | 42 | trace_nfs4_cb_getattr(cps->clp, &args->fh, NULL, |
Trond Myklebust | 7cd1486 | 2015-08-20 20:07:54 -0500 | [diff] [blame] | 43 | -ntohl(res->status)); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 44 | goto out; |
Trond Myklebust | 7cd1486 | 2015-08-20 20:07:54 -0500 | [diff] [blame] | 45 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | nfsi = NFS_I(inode); |
Trond Myklebust | 761fe93 | 2010-08-04 09:29:52 -0400 | [diff] [blame] | 47 | rcu_read_lock(); |
| 48 | delegation = rcu_dereference(nfsi->delegation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0) |
| 50 | goto out_iput; |
| 51 | res->size = i_size_read(inode); |
Trond Myklebust | beb2a5e | 2006-01-03 09:55:37 +0100 | [diff] [blame] | 52 | res->change_attr = delegation->change_attr; |
Weston Andros Adamson | cb1410c | 2014-11-12 12:08:00 -0500 | [diff] [blame] | 53 | if (nfsi->nrequests != 0) |
Trond Myklebust | beb2a5e | 2006-01-03 09:55:37 +0100 | [diff] [blame] | 54 | res->change_attr++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | res->ctime = inode->i_ctime; |
| 56 | res->mtime = inode->i_mtime; |
| 57 | res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & |
| 58 | args->bitmap[0]; |
| 59 | res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) & |
| 60 | args->bitmap[1]; |
| 61 | res->status = 0; |
| 62 | out_iput: |
Trond Myklebust | 761fe93 | 2010-08-04 09:29:52 -0400 | [diff] [blame] | 63 | rcu_read_unlock(); |
Trond Myklebust | 7cd1486 | 2015-08-20 20:07:54 -0500 | [diff] [blame] | 64 | trace_nfs4_cb_getattr(cps->clp, &args->fh, inode, -ntohl(res->status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | iput(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | out: |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 67 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | return res->status; |
| 69 | } |
| 70 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 71 | __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, |
| 72 | struct cb_process_state *cps) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | struct inode *inode; |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 75 | __be32 res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 77 | res = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
| 78 | if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | goto out; |
Chuck Lever | 1d98fe6 | 2007-12-10 14:57:23 -0500 | [diff] [blame] | 80 | |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 81 | dprintk_rcu("NFS: RECALL callback request from %s\n", |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 82 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
Chuck Lever | 1d98fe6 | 2007-12-10 14:57:23 -0500 | [diff] [blame] | 83 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 84 | res = htonl(NFS4ERR_BADHANDLE); |
| 85 | inode = nfs_delegation_find_inode(cps->clp, &args->fh); |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 86 | if (inode == NULL) { |
| 87 | trace_nfs4_cb_recall(cps->clp, &args->fh, NULL, |
| 88 | &args->stateid, -ntohl(res)); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 89 | goto out; |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 90 | } |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 91 | /* Set up a helper thread to actually return the delegation */ |
| 92 | switch (nfs_async_inode_return_delegation(inode, &args->stateid)) { |
| 93 | case 0: |
| 94 | res = 0; |
| 95 | break; |
| 96 | case -ENOENT: |
Trond Myklebust | 8e663f0 | 2012-03-04 18:13:56 -0500 | [diff] [blame] | 97 | res = htonl(NFS4ERR_BAD_STATEID); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 98 | break; |
| 99 | default: |
| 100 | res = htonl(NFS4ERR_RESOURCE); |
| 101 | } |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 102 | trace_nfs4_cb_recall(cps->clp, &args->fh, inode, |
| 103 | &args->stateid, -ntohl(res)); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 104 | iput(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | out: |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 106 | dprintk("%s: exit with status = %d\n", __func__, ntohl(res)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | return res; |
| 108 | } |
Benny Halevy | d49433e | 2009-04-01 09:23:25 -0400 | [diff] [blame] | 109 | |
| 110 | #if defined(CONFIG_NFS_V4_1) |
| 111 | |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 112 | /* |
| 113 | * Lookup a layout by filehandle. |
| 114 | * |
| 115 | * Note: gets a refcount on the layout hdr and on its respective inode. |
| 116 | * Caller must put the layout hdr and the inode. |
| 117 | * |
| 118 | * TODO: keep track of all layouts (and delegations) in a hash table |
| 119 | * hashed by filehandle. |
| 120 | */ |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 121 | static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, |
| 122 | struct nfs_fh *fh, nfs4_stateid *stateid) |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 123 | { |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 124 | struct nfs_server *server; |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 125 | struct inode *ino; |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 126 | struct pnfs_layout_hdr *lo; |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 127 | |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 128 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { |
| 129 | list_for_each_entry(lo, &server->layouts, plh_layouts) { |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 130 | if (!nfs4_stateid_match_other(&lo->plh_stateid, stateid)) |
| 131 | continue; |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 132 | if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh)) |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 133 | continue; |
| 134 | ino = igrab(lo->plh_inode); |
| 135 | if (!ino) |
Trond Myklebust | 9a7fe9e8 | 2014-02-12 08:17:00 -0500 | [diff] [blame] | 136 | break; |
Trond Myklebust | 9c62638 | 2012-09-20 17:31:43 -0400 | [diff] [blame] | 137 | spin_lock(&ino->i_lock); |
| 138 | /* Is this layout in the process of being freed? */ |
| 139 | if (NFS_I(ino)->layout != lo) { |
| 140 | spin_unlock(&ino->i_lock); |
| 141 | iput(ino); |
Trond Myklebust | 9a7fe9e8 | 2014-02-12 08:17:00 -0500 | [diff] [blame] | 142 | break; |
Trond Myklebust | 9c62638 | 2012-09-20 17:31:43 -0400 | [diff] [blame] | 143 | } |
Trond Myklebust | 70c3bd2 | 2012-09-18 20:51:13 -0400 | [diff] [blame] | 144 | pnfs_get_layout_hdr(lo); |
Trond Myklebust | 9c62638 | 2012-09-20 17:31:43 -0400 | [diff] [blame] | 145 | spin_unlock(&ino->i_lock); |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 146 | return lo; |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 147 | } |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 148 | } |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 149 | |
| 150 | return NULL; |
| 151 | } |
| 152 | |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 153 | static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, |
| 154 | struct nfs_fh *fh, nfs4_stateid *stateid) |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 155 | { |
| 156 | struct pnfs_layout_hdr *lo; |
| 157 | |
| 158 | spin_lock(&clp->cl_lock); |
| 159 | rcu_read_lock(); |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 160 | lo = get_layout_by_fh_locked(clp, fh, stateid); |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 161 | rcu_read_unlock(); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 162 | spin_unlock(&clp->cl_lock); |
Weston Andros Adamson | 6382a44 | 2011-06-01 16:44:44 -0400 | [diff] [blame] | 163 | |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 164 | return lo; |
| 165 | } |
| 166 | |
Trond Myklebust | 41c9127 | 2015-12-28 12:57:53 -0500 | [diff] [blame] | 167 | /* |
| 168 | * Enforce RFC5661 section 12.5.5.2.1. (Layout Recall and Return Sequencing) |
| 169 | */ |
| 170 | static bool pnfs_check_stateid_sequence(struct pnfs_layout_hdr *lo, |
| 171 | const nfs4_stateid *new) |
| 172 | { |
| 173 | u32 oldseq, newseq; |
| 174 | |
| 175 | oldseq = be32_to_cpu(lo->plh_stateid.seqid); |
| 176 | newseq = be32_to_cpu(new->seqid); |
| 177 | |
| 178 | if (newseq > oldseq + 1) |
| 179 | return false; |
| 180 | return true; |
| 181 | } |
| 182 | |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 183 | static u32 initiate_file_draining(struct nfs_client *clp, |
| 184 | struct cb_layoutrecallargs *args) |
| 185 | { |
| 186 | struct inode *ino; |
| 187 | struct pnfs_layout_hdr *lo; |
| 188 | u32 rv = NFS4ERR_NOMATCHING_LAYOUT; |
| 189 | LIST_HEAD(free_me_list); |
| 190 | |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 191 | lo = get_layout_by_fh(clp, &args->cbl_fh, &args->cbl_stateid); |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 192 | if (!lo) { |
| 193 | trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, NULL, |
| 194 | &args->cbl_stateid, -rv); |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 195 | goto out; |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 196 | } |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 197 | |
Benny Halevy | d36b7cf | 2012-01-22 16:03:39 +0200 | [diff] [blame] | 198 | ino = lo->plh_inode; |
Christoph Hellwig | 7c5d187 | 2014-09-10 08:23:29 -0700 | [diff] [blame] | 199 | |
| 200 | spin_lock(&ino->i_lock); |
Trond Myklebust | 41c9127 | 2015-12-28 12:57:53 -0500 | [diff] [blame] | 201 | if (!pnfs_check_stateid_sequence(lo, &args->cbl_stateid)) { |
| 202 | rv = NFS4ERR_DELAY; |
| 203 | goto unlock; |
| 204 | } |
Christoph Hellwig | 7c5d187 | 2014-09-10 08:23:29 -0700 | [diff] [blame] | 205 | pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); |
| 206 | spin_unlock(&ino->i_lock); |
| 207 | |
| 208 | pnfs_layoutcommit_inode(ino, false); |
| 209 | |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 210 | spin_lock(&ino->i_lock); |
Trond Myklebust | fc7ff36 | 2015-12-28 10:28:59 -0500 | [diff] [blame] | 211 | /* |
| 212 | * Enforce RFC5661 Section 12.5.5.2.1.5 (Bulk Recall and Return) |
| 213 | */ |
| 214 | if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { |
| 215 | rv = NFS4ERR_DELAY; |
| 216 | goto unlock; |
| 217 | } |
| 218 | |
Trond Myklebust | 4b0934b | 2016-01-04 11:28:11 -0500 | [diff] [blame] | 219 | if (pnfs_mark_matching_lsegs_return(lo, &free_me_list, |
Jeff Layton | 6d597e1 | 2016-05-17 12:28:42 -0400 | [diff] [blame] | 220 | &args->cbl_range, |
| 221 | be32_to_cpu(args->cbl_stateid.seqid))) { |
Trond Myklebust | e0d9243 | 2015-12-28 12:21:50 -0500 | [diff] [blame] | 222 | rv = NFS4_OK; |
Christoph Hellwig | c88953d | 2014-09-10 08:23:31 -0700 | [diff] [blame] | 223 | goto unlock; |
| 224 | } |
| 225 | |
| 226 | if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) { |
| 227 | NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo, |
| 228 | &args->cbl_range); |
| 229 | } |
Trond Myklebust | 0654cc7 | 2015-12-28 11:48:14 -0500 | [diff] [blame] | 230 | pnfs_mark_layout_returned_if_empty(lo); |
Christoph Hellwig | c88953d | 2014-09-10 08:23:31 -0700 | [diff] [blame] | 231 | unlock: |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 232 | spin_unlock(&ino->i_lock); |
| 233 | pnfs_free_lseg_list(&free_me_list); |
Trond Myklebust | b20135d | 2015-12-31 09:28:06 -0500 | [diff] [blame] | 234 | /* Free all lsegs that are attached to commit buckets */ |
| 235 | nfs_commit_inode(ino, 0); |
Trond Myklebust | 70c3bd2 | 2012-09-18 20:51:13 -0400 | [diff] [blame] | 236 | pnfs_put_layout_hdr(lo); |
Trond Myklebust | e07db90 | 2015-12-28 14:07:23 -0500 | [diff] [blame] | 237 | trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, ino, |
| 238 | &args->cbl_stateid, -rv); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 239 | iput(ino); |
Trond Myklebust | 27999f2 | 2014-02-12 08:12:42 -0500 | [diff] [blame] | 240 | out: |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 241 | return rv; |
| 242 | } |
| 243 | |
| 244 | static u32 initiate_bulk_draining(struct nfs_client *clp, |
| 245 | struct cb_layoutrecallargs *args) |
| 246 | { |
Trond Myklebust | fd9a8d7 | 2013-02-12 09:48:42 -0500 | [diff] [blame] | 247 | int stat; |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 248 | |
Trond Myklebust | fd9a8d7 | 2013-02-12 09:48:42 -0500 | [diff] [blame] | 249 | if (args->cbl_recall_type == RETURN_FSID) |
| 250 | stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true); |
| 251 | else |
| 252 | stat = pnfs_destroy_layouts_byclid(clp, true); |
| 253 | if (stat != 0) |
| 254 | return NFS4ERR_DELAY; |
| 255 | return NFS4ERR_NOMATCHING_LAYOUT; |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | static u32 do_callback_layoutrecall(struct nfs_client *clp, |
| 259 | struct cb_layoutrecallargs *args) |
| 260 | { |
Trond Myklebust | 0cb3284 | 2012-03-01 11:17:50 -0500 | [diff] [blame] | 261 | u32 res; |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 262 | |
| 263 | dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 264 | if (args->cbl_recall_type == RETURN_FILE) |
| 265 | res = initiate_file_draining(clp, args); |
| 266 | else |
| 267 | res = initiate_bulk_draining(clp, args); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 268 | dprintk("%s returning %i\n", __func__, res); |
| 269 | return res; |
| 270 | |
| 271 | } |
| 272 | |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 273 | __be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args, |
| 274 | void *dummy, struct cb_process_state *cps) |
| 275 | { |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 276 | u32 res; |
| 277 | |
| 278 | dprintk("%s: -->\n", __func__); |
| 279 | |
| 280 | if (cps->clp) |
| 281 | res = do_callback_layoutrecall(cps->clp, args); |
| 282 | else |
| 283 | res = NFS4ERR_OP_NOT_IN_SESSION; |
| 284 | |
| 285 | dprintk("%s: exit with status = %d\n", __func__, res); |
| 286 | return cpu_to_be32(res); |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Alexandros Batsakis | 3684037 | 2011-01-06 11:36:31 +0000 | [diff] [blame] | 289 | static void pnfs_recall_all_layouts(struct nfs_client *clp) |
| 290 | { |
| 291 | struct cb_layoutrecallargs args; |
| 292 | |
| 293 | /* Pretend we got a CB_LAYOUTRECALL(ALL) */ |
| 294 | memset(&args, 0, sizeof(args)); |
| 295 | args.cbl_recall_type = RETURN_ALL; |
| 296 | /* FIXME we ignore errors, what should we do? */ |
| 297 | do_callback_layoutrecall(clp, &args); |
| 298 | } |
| 299 | |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 300 | __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, |
| 301 | void *dummy, struct cb_process_state *cps) |
| 302 | { |
| 303 | int i; |
| 304 | __be32 res = 0; |
| 305 | struct nfs_client *clp = cps->clp; |
| 306 | struct nfs_server *server = NULL; |
| 307 | |
| 308 | dprintk("%s: -->\n", __func__); |
| 309 | |
| 310 | if (!clp) { |
| 311 | res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
| 312 | goto out; |
| 313 | } |
| 314 | |
| 315 | for (i = 0; i < args->ndevs; i++) { |
| 316 | struct cb_devicenotifyitem *dev = &args->devs[i]; |
| 317 | |
| 318 | if (!server || |
| 319 | server->pnfs_curr_ld->id != dev->cbd_layout_type) { |
| 320 | rcu_read_lock(); |
| 321 | list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) |
| 322 | if (server->pnfs_curr_ld && |
| 323 | server->pnfs_curr_ld->id == dev->cbd_layout_type) { |
| 324 | rcu_read_unlock(); |
| 325 | goto found; |
| 326 | } |
| 327 | rcu_read_unlock(); |
| 328 | dprintk("%s: layout type %u not found\n", |
| 329 | __func__, dev->cbd_layout_type); |
| 330 | continue; |
| 331 | } |
| 332 | |
| 333 | found: |
Benny Halevy | 35c8bb5 | 2011-05-24 18:04:02 +0300 | [diff] [blame] | 334 | nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | out: |
| 338 | kfree(args->devs); |
| 339 | dprintk("%s: exit with status = %u\n", |
| 340 | __func__, be32_to_cpu(res)); |
| 341 | return res; |
| 342 | } |
| 343 | |
Ricardo Labiaga | 963891a | 2009-04-01 09:23:34 -0400 | [diff] [blame] | 344 | /* |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 345 | * Validate the sequenceID sent by the server. |
| 346 | * Return success if the sequenceID is one more than what we last saw on |
| 347 | * this slot, accounting for wraparound. Increments the slot's sequence. |
| 348 | * |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 349 | * We don't yet implement a duplicate request cache, instead we set the |
| 350 | * back channel ca_maxresponsesize_cached to zero. This is OK for now |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 351 | * since we only currently implement idempotent callbacks anyway. |
| 352 | * |
| 353 | * We have a single slot backchannel at this time, so we don't bother |
| 354 | * checking the used_slots bit array on the table. The lower layer guarantees |
| 355 | * a single outstanding callback request at a time. |
| 356 | */ |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 357 | static __be32 |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 358 | validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot, |
| 359 | const struct cb_sequenceargs * args) |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 360 | { |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 361 | dprintk("%s enter. slotid %u seqid %u, slot table seqid: %u\n", |
| 362 | __func__, args->csa_slotid, args->csa_sequenceid, slot->seq_nr); |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 363 | |
Trond Myklebust | f4f58ed | 2016-01-23 14:12:52 -0500 | [diff] [blame] | 364 | if (args->csa_slotid > tbl->server_highest_slotid) |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 365 | return htonl(NFS4ERR_BADSLOT); |
| 366 | |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 367 | /* Replay */ |
Andy Adamson | b2f28bd | 2010-01-14 17:45:07 -0500 | [diff] [blame] | 368 | if (args->csa_sequenceid == slot->seq_nr) { |
Chuck Lever | e8d9238 | 2013-08-09 12:47:51 -0400 | [diff] [blame] | 369 | dprintk("%s seqid %u is a replay\n", |
Andy Adamson | b2f28bd | 2010-01-14 17:45:07 -0500 | [diff] [blame] | 370 | __func__, args->csa_sequenceid); |
Trond Myklebust | 810d82e | 2016-01-23 15:18:18 -0500 | [diff] [blame] | 371 | if (nfs4_test_locked_slot(tbl, slot->slot_nr)) |
Trond Myklebust | f74a834 | 2016-01-23 17:15:37 -0500 | [diff] [blame] | 372 | return htonl(NFS4ERR_DELAY); |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 373 | /* Signal process_op to set this error on next op */ |
| 374 | if (args->csa_cachethis == 0) |
| 375 | return htonl(NFS4ERR_RETRY_UNCACHED_REP); |
| 376 | |
Trond Myklebust | 80f9642 | 2016-01-23 15:21:08 -0500 | [diff] [blame] | 377 | /* Liar! We never allowed you to set csa_cachethis != 0 */ |
| 378 | return htonl(NFS4ERR_SEQ_FALSE_RETRY); |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | /* Wraparound */ |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 382 | if (unlikely(slot->seq_nr == 0xFFFFFFFFU)) { |
| 383 | if (args->csa_sequenceid == 1) |
| 384 | return htonl(NFS4_OK); |
| 385 | } else if (likely(args->csa_sequenceid == slot->seq_nr + 1)) |
| 386 | return htonl(NFS4_OK); |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 387 | |
| 388 | /* Misordered request */ |
| 389 | return htonl(NFS4ERR_SEQ_MISORDERED); |
| 390 | } |
| 391 | |
| 392 | /* |
Mike Sager | a7989c3 | 2010-01-19 12:54:40 -0500 | [diff] [blame] | 393 | * For each referring call triple, check the session's slot table for |
| 394 | * a match. If the slot is in use and the sequence numbers match, the |
| 395 | * client is still waiting for a response to the original request. |
| 396 | */ |
| 397 | static bool referring_call_exists(struct nfs_client *clp, |
| 398 | uint32_t nrclists, |
| 399 | struct referring_call_list *rclists) |
| 400 | { |
| 401 | bool status = 0; |
| 402 | int i, j; |
| 403 | struct nfs4_session *session; |
| 404 | struct nfs4_slot_table *tbl; |
| 405 | struct referring_call_list *rclist; |
| 406 | struct referring_call *ref; |
| 407 | |
| 408 | /* |
| 409 | * XXX When client trunking is implemented, this becomes |
| 410 | * a session lookup from within the loop |
| 411 | */ |
| 412 | session = clp->cl_session; |
| 413 | tbl = &session->fc_slot_table; |
| 414 | |
| 415 | for (i = 0; i < nrclists; i++) { |
| 416 | rclist = &rclists[i]; |
| 417 | if (memcmp(session->sess_id.data, |
| 418 | rclist->rcl_sessionid.data, |
| 419 | NFS4_MAX_SESSIONID_LEN) != 0) |
| 420 | continue; |
| 421 | |
| 422 | for (j = 0; j < rclist->rcl_nrefcalls; j++) { |
| 423 | ref = &rclist->rcl_refcalls[j]; |
| 424 | |
| 425 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u " |
| 426 | "slotid %u\n", __func__, |
| 427 | ((u32 *)&rclist->rcl_sessionid.data)[0], |
| 428 | ((u32 *)&rclist->rcl_sessionid.data)[1], |
| 429 | ((u32 *)&rclist->rcl_sessionid.data)[2], |
| 430 | ((u32 *)&rclist->rcl_sessionid.data)[3], |
| 431 | ref->rc_sequenceid, ref->rc_slotid); |
| 432 | |
| 433 | spin_lock(&tbl->slot_tbl_lock); |
| 434 | status = (test_bit(ref->rc_slotid, tbl->used_slots) && |
| 435 | tbl->slots[ref->rc_slotid].seq_nr == |
| 436 | ref->rc_sequenceid); |
| 437 | spin_unlock(&tbl->slot_tbl_lock); |
| 438 | if (status) |
| 439 | goto out; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | out: |
| 444 | return status; |
| 445 | } |
| 446 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 447 | __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 448 | struct cb_sequenceres *res, |
| 449 | struct cb_process_state *cps) |
Benny Halevy | d49433e | 2009-04-01 09:23:25 -0400 | [diff] [blame] | 450 | { |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 451 | struct nfs4_slot_table *tbl; |
Kinglong Mee | e937ee7 | 2015-06-02 18:58:46 +0800 | [diff] [blame] | 452 | struct nfs4_slot *slot; |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 453 | struct nfs_client *clp; |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 454 | int i; |
Andy Adamson | 778be23 | 2011-01-25 15:38:01 +0000 | [diff] [blame] | 455 | __be32 status = htonl(NFS4ERR_BADSESSION); |
Benny Halevy | d49433e | 2009-04-01 09:23:25 -0400 | [diff] [blame] | 456 | |
Bryan Schumaker | 459de2e | 2013-06-05 11:15:01 -0400 | [diff] [blame] | 457 | clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, |
| 458 | &args->csa_sessionid, cps->minorversion); |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 459 | if (clp == NULL) |
| 460 | goto out; |
| 461 | |
Trond Myklebust | b1c0df5 | 2015-02-18 11:34:58 -0800 | [diff] [blame] | 462 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) |
| 463 | goto out; |
Kinglong Mee | e937ee7 | 2015-06-02 18:58:46 +0800 | [diff] [blame] | 464 | |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 465 | tbl = &clp->cl_session->bc_slot_table; |
Kinglong Mee | e937ee7 | 2015-06-02 18:58:46 +0800 | [diff] [blame] | 466 | slot = tbl->slots + args->csa_slotid; |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 467 | |
Trond Myklebust | e5003b2 | 2016-02-01 12:01:51 -0500 | [diff] [blame] | 468 | /* Set up res before grabbing the spinlock */ |
| 469 | memcpy(&res->csr_sessionid, &args->csa_sessionid, |
| 470 | sizeof(res->csr_sessionid)); |
| 471 | res->csr_sequenceid = args->csa_sequenceid; |
| 472 | res->csr_slotid = args->csa_slotid; |
| 473 | |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 474 | spin_lock(&tbl->slot_tbl_lock); |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 475 | /* state manager is resetting the session */ |
Andy Adamson | 774d5f1 | 2013-05-20 14:13:50 -0400 | [diff] [blame] | 476 | if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) { |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 477 | status = htonl(NFS4ERR_DELAY); |
Trond Myklebust | 910ac68 | 2011-08-02 14:46:52 -0400 | [diff] [blame] | 478 | /* Return NFS4ERR_BADSESSION if we're draining the session |
| 479 | * in order to reset it. |
| 480 | */ |
| 481 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) |
| 482 | status = htonl(NFS4ERR_BADSESSION); |
Trond Myklebust | 4e54ab8 | 2015-06-11 21:13:58 -0400 | [diff] [blame] | 483 | goto out_unlock; |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 484 | } |
| 485 | |
Trond Myklebust | 810d82e | 2016-01-23 15:18:18 -0500 | [diff] [blame] | 486 | status = htonl(NFS4ERR_BADSLOT); |
| 487 | slot = nfs4_lookup_slot(tbl, args->csa_slotid); |
| 488 | if (IS_ERR(slot)) |
| 489 | goto out_unlock; |
Trond Myklebust | e5003b2 | 2016-02-01 12:01:51 -0500 | [diff] [blame] | 490 | |
| 491 | res->csr_highestslotid = tbl->server_highest_slotid; |
| 492 | res->csr_target_highestslotid = tbl->target_highest_slotid; |
| 493 | |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 494 | status = validate_seqid(tbl, slot, args); |
| 495 | if (status) |
| 496 | goto out_unlock; |
Trond Myklebust | 810d82e | 2016-01-23 15:18:18 -0500 | [diff] [blame] | 497 | if (!nfs4_try_to_lock_slot(tbl, slot)) { |
| 498 | status = htonl(NFS4ERR_DELAY); |
| 499 | goto out_unlock; |
| 500 | } |
| 501 | cps->slot = slot; |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 502 | |
Trond Myklebust | 80f9642 | 2016-01-23 15:21:08 -0500 | [diff] [blame] | 503 | /* The ca_maxresponsesize_cached is 0 with no DRC */ |
Olga Kornievskaia | c2985d0 | 2016-05-10 16:57:41 -0400 | [diff] [blame] | 504 | if (args->csa_cachethis != 0) { |
| 505 | status = htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE); |
| 506 | goto out_unlock; |
| 507 | } |
Trond Myklebust | 80f9642 | 2016-01-23 15:21:08 -0500 | [diff] [blame] | 508 | |
Mike Sager | 72ce2b3 | 2010-01-19 12:54:41 -0500 | [diff] [blame] | 509 | /* |
| 510 | * Check for pending referring calls. If a match is found, a |
| 511 | * related callback was received before the response to the original |
| 512 | * call. |
| 513 | */ |
| 514 | if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) { |
| 515 | status = htonl(NFS4ERR_DELAY); |
Trond Myklebust | 4e54ab8 | 2015-06-11 21:13:58 -0400 | [diff] [blame] | 516 | goto out_unlock; |
Mike Sager | 72ce2b3 | 2010-01-19 12:54:41 -0500 | [diff] [blame] | 517 | } |
| 518 | |
Kinglong Mee | e937ee7 | 2015-06-02 18:58:46 +0800 | [diff] [blame] | 519 | /* |
| 520 | * RFC5661 20.9.3 |
| 521 | * If CB_SEQUENCE returns an error, then the state of the slot |
| 522 | * (sequence ID, cached reply) MUST NOT change. |
| 523 | */ |
Trond Myklebust | 5f83d86 | 2016-01-23 16:57:58 -0500 | [diff] [blame] | 524 | slot->seq_nr = args->csa_sequenceid; |
Trond Myklebust | 4e54ab8 | 2015-06-11 21:13:58 -0400 | [diff] [blame] | 525 | out_unlock: |
| 526 | spin_unlock(&tbl->slot_tbl_lock); |
Kinglong Mee | e937ee7 | 2015-06-02 18:58:46 +0800 | [diff] [blame] | 527 | |
Ricardo Labiaga | 68f3f90 | 2009-04-01 09:23:35 -0400 | [diff] [blame] | 528 | out: |
Andy Adamson | 2c4cdf8 | 2011-01-25 15:38:02 +0000 | [diff] [blame] | 529 | cps->clp = clp; /* put in nfs4_callback_compound */ |
Mike Sager | 72ce2b3 | 2010-01-19 12:54:41 -0500 | [diff] [blame] | 530 | for (i = 0; i < args->csa_nrclists; i++) |
| 531 | kfree(args->csa_rclists[i].rcl_refcalls); |
| 532 | kfree(args->csa_rclists); |
| 533 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 534 | if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { |
| 535 | cps->drc_status = status; |
| 536 | status = 0; |
| 537 | } else |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 538 | res->csr_status = status; |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 539 | |
Trond Myklebust | 2f92ae3 | 2013-08-14 17:58:28 -0400 | [diff] [blame] | 540 | trace_nfs4_cb_sequence(args, res, status); |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 541 | dprintk("%s: exit with status = %d res->csr_status %d\n", __func__, |
| 542 | ntohl(status), ntohl(res->csr_status)); |
| 543 | return status; |
Benny Halevy | d49433e | 2009-04-01 09:23:25 -0400 | [diff] [blame] | 544 | } |
| 545 | |
Alexandros Batsakis | 3684037 | 2011-01-06 11:36:31 +0000 | [diff] [blame] | 546 | static bool |
| 547 | validate_bitmap_values(unsigned long mask) |
| 548 | { |
| 549 | return (mask & ~RCA4_TYPE_MASK_ALL) == 0; |
| 550 | } |
| 551 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 552 | __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy, |
| 553 | struct cb_process_state *cps) |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 554 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 555 | __be32 status; |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 556 | fmode_t flags = 0; |
| 557 | |
Alexandros Batsakis | 3684037 | 2011-01-06 11:36:31 +0000 | [diff] [blame] | 558 | status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 559 | if (!cps->clp) /* set in cb_sequence */ |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 560 | goto out; |
| 561 | |
Trond Myklebust | 2446ab6 | 2012-03-01 17:00:56 -0500 | [diff] [blame] | 562 | dprintk_rcu("NFS: RECALL_ANY callback request from %s\n", |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 563 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 564 | |
Alexandros Batsakis | 3684037 | 2011-01-06 11:36:31 +0000 | [diff] [blame] | 565 | status = cpu_to_be32(NFS4ERR_INVAL); |
| 566 | if (!validate_bitmap_values(args->craa_type_mask)) |
| 567 | goto out; |
| 568 | |
| 569 | status = cpu_to_be32(NFS4_OK); |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 570 | if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *) |
| 571 | &args->craa_type_mask)) |
| 572 | flags = FMODE_READ; |
| 573 | if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *) |
| 574 | &args->craa_type_mask)) |
| 575 | flags |= FMODE_WRITE; |
Alexandros Batsakis | 3684037 | 2011-01-06 11:36:31 +0000 | [diff] [blame] | 576 | if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *) |
| 577 | &args->craa_type_mask)) |
| 578 | pnfs_recall_all_layouts(cps->clp); |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 579 | if (flags) |
Trond Myklebust | 826e001 | 2013-04-03 19:27:52 -0400 | [diff] [blame] | 580 | nfs_expire_unused_delegation_types(cps->clp, flags); |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 581 | out: |
| 582 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
| 583 | return status; |
| 584 | } |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 585 | |
| 586 | /* Reduce the fore channel's max_slots to the target value */ |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 587 | __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy, |
| 588 | struct cb_process_state *cps) |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 589 | { |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 590 | struct nfs4_slot_table *fc_tbl; |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 591 | __be32 status; |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 592 | |
| 593 | status = htonl(NFS4ERR_OP_NOT_IN_SESSION); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 594 | if (!cps->clp) /* set in cb_sequence */ |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 595 | goto out; |
| 596 | |
Chuck Lever | e8d9238 | 2013-08-09 12:47:51 -0400 | [diff] [blame] | 597 | dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n", |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 598 | rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR), |
Trond Myklebust | d5fb4ce | 2012-11-20 20:24:02 -0500 | [diff] [blame] | 599 | args->crsa_target_highest_slotid); |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 600 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 601 | fc_tbl = &cps->clp->cl_session->fc_slot_table; |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 602 | |
Andy Adamson | bae0ac0 | 2010-01-21 14:19:16 -0500 | [diff] [blame] | 603 | status = htonl(NFS4_OK); |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 604 | |
Trond Myklebust | d5fb4ce | 2012-11-20 20:24:02 -0500 | [diff] [blame] | 605 | nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid); |
Anna Schumaker | 3f10a6a | 2015-07-13 14:01:31 -0400 | [diff] [blame] | 606 | nfs41_notify_server(cps->clp); |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 607 | out: |
| 608 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
| 609 | return status; |
| 610 | } |
Benny Halevy | d49433e | 2009-04-01 09:23:25 -0400 | [diff] [blame] | 611 | #endif /* CONFIG_NFS_V4_1 */ |