diff options
Diffstat (limited to 'fs/nfs/objlayout/pnfs_osd_xdr_cli.c')
| -rw-r--r-- | fs/nfs/objlayout/pnfs_osd_xdr_cli.c | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c deleted file mode 100644 index f093c7ec983b..000000000000 --- a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * Object-Based pNFS Layout XDR layer - * - * Copyright (C) 2007 Panasas Inc. [year of first publication] - * All rights reserved. - * - * Benny Halevy <bhalevy@panasas.com> - * Boaz Harrosh <ooo@electrozaur.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * See the file COPYING included with this distribution for more details. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the Panasas company nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <linux/pnfs_osd_xdr.h> - -#define NFSDBG_FACILITY NFSDBG_PNFS_LD - -/* - * The following implementation is based on RFC5664 - */ - -/* - * struct pnfs_osd_objid { - * struct nfs4_deviceid oid_device_id; - * u64 oid_partition_id; - * u64 oid_object_id; - * }; // xdr size 32 bytes - */ -static __be32 * -_osd_xdr_decode_objid(__be32 *p, struct pnfs_osd_objid *objid) -{ - p = xdr_decode_opaque_fixed(p, objid->oid_device_id.data, - sizeof(objid->oid_device_id.data)); - - p = xdr_decode_hyper(p, &objid->oid_partition_id); - p = xdr_decode_hyper(p, &objid->oid_object_id); - return p; -} -/* - * struct pnfs_osd_opaque_cred { - * u32 cred_len; - * void *cred; - * }; // xdr size [variable] - * The return pointers are from the xdr buffer - */ -static int -_osd_xdr_decode_opaque_cred(struct pnfs_osd_opaque_cred *opaque_cred, - struct xdr_stream *xdr) -{ - __be32 *p = xdr_inline_decode(xdr, 1); - - if (!p) - return -EINVAL; - - opaque_cred->cred_len = be32_to_cpu(*p++); - - p = xdr_inline_decode(xdr, opaque_cred->cred_len); - if (!p) - return -EINVAL; - - opaque_cred->cred = p; - return 0; -} - -/* - * struct pnfs_osd_object_cred { - * struct pnfs_osd_objid oc_object_id; - * u32 oc_osd_version; - * u32 oc_cap_key_sec; - * struct pnfs_osd_opaque_cred oc_cap_key - * struct pnfs_osd_opaque_cred oc_cap; - * }; // xdr size 32 + 4 + 4 + [variable] + [variable] - */ -static int -_osd_xdr_decode_object_cred(struct pnfs_osd_object_cred *comp, - struct xdr_stream *xdr) -{ - __be32 *p = xdr_inline_decode(xdr, 32 + 4 + 4); - int ret; - - if (!p) - return -EIO; - - p = _osd_xdr_decode_objid(p, &comp->oc_object_id); - comp->oc_osd_version = be32_to_cpup(p++); - comp->oc_cap_key_sec = be32_to_cpup(p); - - ret = _osd_xdr_decode_opaque_cred(&comp->oc_cap_key, xdr); - if (unlikely(ret)) - return ret; - - ret = _osd_xdr_decode_opaque_cred(&comp->oc_cap, xdr); - return ret; -} - -/* - * struct pnfs_osd_data_map { - * u32 odm_num_comps; - * u64 odm_stripe_unit; - * u32 odm_group_width; - * u32 odm_group_depth; - * u32 odm_mirror_cnt; - * u32 odm_raid_algorithm; - * }; // xdr size 4 + 8 + 4 + 4 + 4 + 4 - */ -static inline int -_osd_data_map_xdr_sz(void) -{ - return 4 + 8 + 4 + 4 + 4 + 4; -} - -static __be32 * -_osd_xdr_decode_data_map(__be32 *p, struct pnfs_osd_data_map *data_map) -{ - data_map->odm_num_comps = be32_to_cpup(p++); - p = xdr_decode_hyper(p, &data_map->odm_stripe_unit); - data_map->odm_group_width = be32_to_cpup(p++); - data_map->odm_group_depth = be32_to_cpup(p++); - data_map->odm_mirror_cnt = be32_to_cpup(p++); - data_map->odm_raid_algorithm = be32_to_cpup(p++); - dprintk("%s: odm_num_comps=%u odm_stripe_unit=%llu odm_group_width=%u " - "odm_group_depth=%u odm_mirror_cnt=%u odm_raid_algorithm=%u\n", - __func__, - data_map->odm_num_comps, - (unsigned long long)data_map->odm_stripe_unit, - data_map->odm_group_width, - data_map->odm_group_depth, - data_map->odm_mirror_cnt, - data_map->odm_raid_algorithm); - return p; -} - -int pnfs_osd_xdr_decode_layout_map(struct pnfs_osd_layout *layout, - struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr) -{ - __be32 *p; - - memset(iter, 0, sizeof(*iter)); - - p = xdr_inline_decode(xdr, _osd_data_map_xdr_sz() + 4 + 4); - if (unlikely(!p)) - return -EINVAL; - - p = _osd_xdr_decode_data_map(p, &layout->olo_map); - layout->olo_comps_index = be32_to_cpup(p++); - layout->olo_num_comps = be32_to_cpup(p++); - dprintk("%s: olo_comps_index=%d olo_num_comps=%d\n", __func__, - layout->olo_comps_index, layout->olo_num_comps); - - iter->total_comps = layout->olo_num_comps; - return 0; -} - -bool pnfs_osd_xdr_decode_layout_comp(struct pnfs_osd_object_cred *comp, - struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr, - int *err) -{ - BUG_ON(iter->decoded_comps > iter->total_comps); - if (iter->decoded_comps == iter->total_comps) - return false; - - *err = _osd_xdr_decode_object_cred(comp, xdr); - if (unlikely(*err)) { - dprintk("%s: _osd_xdr_decode_object_cred=>%d decoded_comps=%d " - "total_comps=%d\n", __func__, *err, - iter->decoded_comps, iter->total_comps); - return false; /* stop the loop */ - } - dprintk("%s: dev(%llx:%llx) par=0x%llx obj=0x%llx " - "key_len=%u cap_len=%u\n", - __func__, - _DEVID_LO(&comp->oc_object_id.oid_device_id), - _DEVID_HI(&comp->oc_object_id.oid_device_id), - comp->oc_object_id.oid_partition_id, - comp->oc_object_id.oid_object_id, - comp->oc_cap_key.cred_len, comp->oc_cap.cred_len); - - iter->decoded_comps++; - return true; -} - -/* - * Get Device Information Decoding - * - * Note: since Device Information is currently done synchronously, all - * variable strings fields are left inside the rpc buffer and are only - * pointed to by the pnfs_osd_deviceaddr members. So the read buffer - * should not be freed while the returned information is in use. - */ -/* - *struct nfs4_string { - * unsigned int len; - * char *data; - *}; // size [variable] - * NOTE: Returned string points to inside the XDR buffer - */ -static __be32 * -__read_u8_opaque(__be32 *p, struct nfs4_string *str) -{ - str->len = be32_to_cpup(p++); - str->data = (char *)p; - - p += XDR_QUADLEN(str->len); - return p; -} - -/* - * struct pnfs_osd_targetid { - * u32 oti_type; - * struct nfs4_string oti_scsi_device_id; - * };// size 4 + [variable] - */ -static __be32 * -__read_targetid(__be32 *p, struct pnfs_osd_targetid* targetid) -{ - u32 oti_type; - - oti_type = be32_to_cpup(p++); - targetid->oti_type = oti_type; - - switch (oti_type) { - case OBJ_TARGET_SCSI_NAME: - case OBJ_TARGET_SCSI_DEVICE_ID: - p = __read_u8_opaque(p, &targetid->oti_scsi_device_id); - } - - return p; -} - -/* - * struct pnfs_osd_net_addr { - * struct nfs4_string r_netid; - * struct nfs4_string r_addr; - * }; - */ -static __be32 * -__read_net_addr(__be32 *p, struct pnfs_osd_net_addr* netaddr) -{ - p = __read_u8_opaque(p, &netaddr->r_netid); - p = __read_u8_opaque(p, &netaddr->r_addr); - - return p; -} - -/* - * struct pnfs_osd_targetaddr { - * u32 ota_available; - * struct pnfs_osd_net_addr ota_netaddr; - * }; - */ -static __be32 * -__read_targetaddr(__be32 *p, struct pnfs_osd_targetaddr *targetaddr) -{ - u32 ota_available; - - ota_available = be32_to_cpup(p++); - targetaddr->ota_available = ota_available; - - if (ota_available) - p = __read_net_addr(p, &targetaddr->ota_netaddr); - - - return p; -} - -/* - * struct pnfs_osd_deviceaddr { - * struct pnfs_osd_targetid oda_targetid; - * struct pnfs_osd_targetaddr oda_targetaddr; - * u8 oda_lun[8]; - * struct nfs4_string oda_systemid; - * struct pnfs_osd_object_cred oda_root_obj_cred; - * struct nfs4_string oda_osdname; - * }; - */ - -/* We need this version for the pnfs_osd_xdr_decode_deviceaddr which does - * not have an xdr_stream - */ -static __be32 * -__read_opaque_cred(__be32 *p, - struct pnfs_osd_opaque_cred *opaque_cred) -{ - opaque_cred->cred_len = be32_to_cpu(*p++); - opaque_cred->cred = p; - return p + XDR_QUADLEN(opaque_cred->cred_len); -} - -static __be32 * -__read_object_cred(__be32 *p, struct pnfs_osd_object_cred *comp) -{ - p = _osd_xdr_decode_objid(p, &comp->oc_object_id); - comp->oc_osd_version = be32_to_cpup(p++); - comp->oc_cap_key_sec = be32_to_cpup(p++); - - p = __read_opaque_cred(p, &comp->oc_cap_key); - p = __read_opaque_cred(p, &comp->oc_cap); - return p; -} - -void pnfs_osd_xdr_decode_deviceaddr( - struct pnfs_osd_deviceaddr *deviceaddr, __be32 *p) -{ - p = __read_targetid(p, &deviceaddr->oda_targetid); - - p = __read_targetaddr(p, &deviceaddr->oda_targetaddr); - - p = xdr_decode_opaque_fixed(p, deviceaddr->oda_lun, - sizeof(deviceaddr->oda_lun)); - - p = __read_u8_opaque(p, &deviceaddr->oda_systemid); - - p = __read_object_cred(p, &deviceaddr->oda_root_obj_cred); - - p = __read_u8_opaque(p, &deviceaddr->oda_osdname); - - /* libosd likes this terminated in dbg. It's last, so no problems */ - deviceaddr->oda_osdname.data[deviceaddr->oda_osdname.len] = 0; -} - -/* - * struct pnfs_osd_layoutupdate { - * u32 dsu_valid; - * s64 dsu_delta; - * u32 olu_ioerr_flag; - * }; xdr size 4 + 8 + 4 - */ -int -pnfs_osd_xdr_encode_layoutupdate(struct xdr_stream *xdr, - struct pnfs_osd_layoutupdate *lou) -{ - __be32 *p = xdr_reserve_space(xdr, 4 + 8 + 4); - - if (!p) - return -E2BIG; - - *p++ = cpu_to_be32(lou->dsu_valid); - if (lou->dsu_valid) - p = xdr_encode_hyper(p, lou->dsu_delta); - *p++ = cpu_to_be32(lou->olu_ioerr_flag); - return 0; -} - -/* - * struct pnfs_osd_objid { - * struct nfs4_deviceid oid_device_id; - * u64 oid_partition_id; - * u64 oid_object_id; - * }; // xdr size 32 bytes - */ -static inline __be32 * -pnfs_osd_xdr_encode_objid(__be32 *p, struct pnfs_osd_objid *object_id) -{ - p = xdr_encode_opaque_fixed(p, &object_id->oid_device_id.data, - sizeof(object_id->oid_device_id.data)); - p = xdr_encode_hyper(p, object_id->oid_partition_id); - p = xdr_encode_hyper(p, object_id->oid_object_id); - - return p; -} - -/* - * struct pnfs_osd_ioerr { - * struct pnfs_osd_objid oer_component; - * u64 oer_comp_offset; - * u64 oer_comp_length; - * u32 oer_iswrite; - * u32 oer_errno; - * }; // xdr size 32 + 24 bytes - */ -void pnfs_osd_xdr_encode_ioerr(__be32 *p, struct pnfs_osd_ioerr *ioerr) -{ - p = pnfs_osd_xdr_encode_objid(p, &ioerr->oer_component); - p = xdr_encode_hyper(p, ioerr->oer_comp_offset); - p = xdr_encode_hyper(p, ioerr->oer_comp_length); - *p++ = cpu_to_be32(ioerr->oer_iswrite); - *p = cpu_to_be32(ioerr->oer_errno); -} - -__be32 *pnfs_osd_xdr_ioerr_reserve_space(struct xdr_stream *xdr) -{ - __be32 *p; - - p = xdr_reserve_space(xdr, 32 + 24); - if (unlikely(!p)) - dprintk("%s: out of xdr space\n", __func__); - - return p; -} |