1 /*- 2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3 * Copyright (c) 2013 Spectra Logic Corporation 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <fs/nfs/nfsport.h> 31 32 #include <rpc/rpc.h> 33 #include <nfs/nfs_fha.h> 34 #include <fs/nfs/xdr_subs.h> 35 #include <fs/nfs/nfs.h> 36 #include <fs/nfs/nfsproto.h> 37 #include <fs/nfs/nfsm_subs.h> 38 #include <fs/nfsserver/nfs_fha_new.h> 39 40 static void fhanew_init(void *foo); 41 static void fhanew_uninit(void *foo); 42 rpcproc_t fhanew_get_procnum(rpcproc_t procnum); 43 int fhanew_realign(struct mbuf **mb, int malloc_flags); 44 int fhanew_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos); 45 int fhanew_is_read(rpcproc_t procnum); 46 int fhanew_is_write(rpcproc_t procnum); 47 int fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 48 struct fha_info *info); 49 int fhanew_no_offset(rpcproc_t procnum); 50 void fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info); 51 static int fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS); 52 53 static struct fha_params fhanew_softc; 54 55 SYSCTL_DECL(_vfs_nfsd); 56 57 extern int newnfs_nfsv3_procid[]; 58 extern SVCPOOL *nfsrvd_pool; 59 60 SYSINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_init, NULL); 61 SYSUNINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_uninit, NULL); 62 63 static void 64 fhanew_init(void *foo) 65 { 66 struct fha_params *softc; 67 68 softc = &fhanew_softc; 69 70 bzero(softc, sizeof(*softc)); 71 72 /* 73 * Setup the callbacks for this FHA personality. 74 */ 75 softc->callbacks.get_procnum = fhanew_get_procnum; 76 softc->callbacks.realign = fhanew_realign; 77 softc->callbacks.get_fh = fhanew_get_fh; 78 softc->callbacks.is_read = fhanew_is_read; 79 softc->callbacks.is_write = fhanew_is_write; 80 softc->callbacks.get_offset = fhanew_get_offset; 81 softc->callbacks.no_offset = fhanew_no_offset; 82 softc->callbacks.set_locktype = fhanew_set_locktype; 83 softc->callbacks.fhe_stats_sysctl = fhenew_stats_sysctl; 84 85 snprintf(softc->server_name, sizeof(softc->server_name), 86 FHANEW_SERVER_NAME); 87 88 softc->pool = &nfsrvd_pool; 89 90 /* 91 * Initialize the sysctl context list for the fha module. 92 */ 93 sysctl_ctx_init(&softc->sysctl_ctx); 94 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 95 SYSCTL_STATIC_CHILDREN(_vfs_nfsd), OID_AUTO, "fha", CTLFLAG_RD, 96 0, "NFS File Handle Affinity (FHA)"); 97 if (softc->sysctl_tree == NULL) { 98 printf("%s: unable to allocate sysctl tree\n", __func__); 99 return; 100 } 101 102 fha_init(softc); 103 } 104 105 static void 106 fhanew_uninit(void *foo) 107 { 108 struct fha_params *softc; 109 110 softc = &fhanew_softc; 111 112 fha_uninit(softc); 113 } 114 115 rpcproc_t 116 fhanew_get_procnum(rpcproc_t procnum) 117 { 118 if (procnum > NFSV2PROC_STATFS) 119 return (-1); 120 121 return (newnfs_nfsv3_procid[procnum]); 122 } 123 124 int 125 fhanew_realign(struct mbuf **mb, int malloc_flags) 126 { 127 return (newnfs_realign(mb, malloc_flags)); 128 } 129 130 int 131 fhanew_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos) 132 { 133 struct nfsrv_descript lnd, *nd; 134 uint32_t *tl; 135 uint8_t *buf; 136 uint64_t t; 137 int error, len, i; 138 139 error = 0; 140 len = 0; 141 nd = &lnd; 142 143 nd->nd_md = *md; 144 nd->nd_dpos = *dpos; 145 146 if (v3) { 147 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 148 if ((len = fxdr_unsigned(int, *tl)) <= 0 || len > NFSX_FHMAX) { 149 error = EBADRPC; 150 goto nfsmout; 151 } 152 } else { 153 len = NFSX_V2FH; 154 } 155 156 t = 0; 157 if (len != 0) { 158 NFSM_DISSECT_NONBLOCK(buf, uint8_t *, len); 159 for (i = 0; i < len; i++) 160 t ^= ((uint64_t)buf[i] << (i & 7) * 8); 161 } 162 *fh = t; 163 164 nfsmout: 165 *md = nd->nd_md; 166 *dpos = nd->nd_dpos; 167 168 return (error); 169 } 170 171 int 172 fhanew_is_read(rpcproc_t procnum) 173 { 174 if (procnum == NFSPROC_READ) 175 return (1); 176 else 177 return (0); 178 } 179 180 int 181 fhanew_is_write(rpcproc_t procnum) 182 { 183 if (procnum == NFSPROC_WRITE) 184 return (1); 185 else 186 return (0); 187 } 188 189 int 190 fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 191 struct fha_info *info) 192 { 193 struct nfsrv_descript lnd, *nd; 194 uint32_t *tl; 195 int error; 196 197 error = 0; 198 199 nd = &lnd; 200 nd->nd_md = *md; 201 nd->nd_dpos = *dpos; 202 203 if (v3) { 204 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, 2 * NFSX_UNSIGNED); 205 info->offset = fxdr_hyper(tl); 206 } else { 207 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 208 info->offset = fxdr_unsigned(uint32_t, *tl); 209 } 210 211 nfsmout: 212 *md = nd->nd_md; 213 *dpos = nd->nd_dpos; 214 215 return (error); 216 } 217 218 int 219 fhanew_no_offset(rpcproc_t procnum) 220 { 221 if (procnum == NFSPROC_FSSTAT || 222 procnum == NFSPROC_FSINFO || 223 procnum == NFSPROC_PATHCONF || 224 procnum == NFSPROC_NOOP || 225 procnum == NFSPROC_NULL) 226 return (1); 227 else 228 return (0); 229 } 230 231 void 232 fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info) 233 { 234 switch (procnum) { 235 case NFSPROC_NULL: 236 case NFSPROC_GETATTR: 237 case NFSPROC_LOOKUP: 238 case NFSPROC_ACCESS: 239 case NFSPROC_READLINK: 240 case NFSPROC_READ: 241 case NFSPROC_READDIR: 242 case NFSPROC_READDIRPLUS: 243 case NFSPROC_WRITE: 244 info->locktype = LK_SHARED; 245 break; 246 case NFSPROC_SETATTR: 247 case NFSPROC_CREATE: 248 case NFSPROC_MKDIR: 249 case NFSPROC_SYMLINK: 250 case NFSPROC_MKNOD: 251 case NFSPROC_REMOVE: 252 case NFSPROC_RMDIR: 253 case NFSPROC_RENAME: 254 case NFSPROC_LINK: 255 case NFSPROC_FSSTAT: 256 case NFSPROC_FSINFO: 257 case NFSPROC_PATHCONF: 258 case NFSPROC_COMMIT: 259 case NFSPROC_NOOP: 260 info->locktype = LK_EXCLUSIVE; 261 break; 262 } 263 } 264 265 static int 266 fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS) 267 { 268 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhanew_softc)); 269 } 270 271 272 SVCTHREAD * 273 fhanew_assign(SVCTHREAD *this_thread, struct svc_req *req) 274 { 275 return (fha_assign(this_thread, req, &fhanew_softc)); 276 } 277