diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/ptlrpc/pack_generic.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/ptlrpc/pack_generic.c | 2536 |
1 files changed, 2536 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c new file mode 100644 index 000000000..b51af9bf3 --- /dev/null +++ b/drivers/staging/lustre/lustre/ptlrpc/pack_generic.c @@ -0,0 +1,2536 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2012, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + * + * lustre/ptlrpc/pack_generic.c + * + * (Un)packing of OST requests + * + * Author: Peter J. Braam <braam@clusterfs.com> + * Author: Phil Schwan <phil@clusterfs.com> + * Author: Eric Barton <eeb@clusterfs.com> + */ + +#define DEBUG_SUBSYSTEM S_RPC + +#include "../../include/linux/libcfs/libcfs.h" + +#include "../include/obd_support.h" +#include "../include/obd_class.h" +#include "../include/lustre_net.h" +#include "../include/obd_cksum.h" +#include "../include/lustre/ll_fiemap.h" + +static inline int lustre_msg_hdr_size_v2(int count) +{ + return cfs_size_round(offsetof(struct lustre_msg_v2, + lm_buflens[count])); +} + +int lustre_msg_hdr_size(__u32 magic, int count) +{ + switch (magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_hdr_size_v2(count); + default: + LASSERTF(0, "incorrect message magic: %08x\n", magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_hdr_size); + +void ptlrpc_buf_set_swabbed(struct ptlrpc_request *req, const int inout, + int index) +{ + if (inout) + lustre_set_req_swabbed(req, index); + else + lustre_set_rep_swabbed(req, index); +} +EXPORT_SYMBOL(ptlrpc_buf_set_swabbed); + +int ptlrpc_buf_need_swab(struct ptlrpc_request *req, const int inout, + int index) +{ + if (inout) + return (ptlrpc_req_need_swab(req) && + !lustre_req_swabbed(req, index)); + else + return (ptlrpc_rep_need_swab(req) && + !lustre_rep_swabbed(req, index)); +} +EXPORT_SYMBOL(ptlrpc_buf_need_swab); + +static inline int lustre_msg_check_version_v2(struct lustre_msg_v2 *msg, + __u32 version) +{ + __u32 ver = lustre_msg_get_version(msg); + return (ver & LUSTRE_VERSION_MASK) != version; +} + +int lustre_msg_check_version(struct lustre_msg *msg, __u32 version) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + CERROR("msg v1 not supported - please upgrade you system\n"); + return -EINVAL; + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_check_version_v2(msg, version); + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_check_version); + +/* early reply size */ +int lustre_msg_early_size(void) +{ + static int size; + if (!size) { + /* Always reply old ptlrpc_body_v2 to keep interoperability + * with the old client (< 2.3) which doesn't have pb_jobid + * in the ptlrpc_body. + * + * XXX Remove this whenever we drop interoperability with such + * client. + */ + __u32 pblen = sizeof(struct ptlrpc_body_v2); + size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pblen); + } + return size; +} +EXPORT_SYMBOL(lustre_msg_early_size); + +int lustre_msg_size_v2(int count, __u32 *lengths) +{ + int size; + int i; + + size = lustre_msg_hdr_size_v2(count); + for (i = 0; i < count; i++) + size += cfs_size_round(lengths[i]); + + return size; +} +EXPORT_SYMBOL(lustre_msg_size_v2); + +/* This returns the size of the buffer that is required to hold a lustre_msg + * with the given sub-buffer lengths. + * NOTE: this should only be used for NEW requests, and should always be + * in the form of a v2 request. If this is a connection to a v1 + * target then the first buffer will be stripped because the ptlrpc + * data is part of the lustre_msg_v1 header. b=14043 */ +int lustre_msg_size(__u32 magic, int count, __u32 *lens) +{ + __u32 size[] = { sizeof(struct ptlrpc_body) }; + + if (!lens) { + LASSERT(count == 1); + lens = size; + } + + LASSERT(count > 0); + LASSERT(lens[MSG_PTLRPC_BODY_OFF] >= sizeof(struct ptlrpc_body_v2)); + + switch (magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_size_v2(count, lens); + default: + LASSERTF(0, "incorrect message magic: %08x\n", magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_size); + +/* This is used to determine the size of a buffer that was already packed + * and will correctly handle the different message formats. */ +int lustre_packed_msg_size(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens); + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_packed_msg_size); + +void lustre_init_msg_v2(struct lustre_msg_v2 *msg, int count, __u32 *lens, + char **bufs) +{ + char *ptr; + int i; + + msg->lm_bufcount = count; + /* XXX: lm_secflvr uninitialized here */ + msg->lm_magic = LUSTRE_MSG_MAGIC_V2; + + for (i = 0; i < count; i++) + msg->lm_buflens[i] = lens[i]; + + if (bufs == NULL) + return; + + ptr = (char *)msg + lustre_msg_hdr_size_v2(count); + for (i = 0; i < count; i++) { + char *tmp = bufs[i]; + LOGL(tmp, lens[i], ptr); + } +} +EXPORT_SYMBOL(lustre_init_msg_v2); + +static int lustre_pack_request_v2(struct ptlrpc_request *req, + int count, __u32 *lens, char **bufs) +{ + int reqlen, rc; + + reqlen = lustre_msg_size_v2(count, lens); + + rc = sptlrpc_cli_alloc_reqbuf(req, reqlen); + if (rc) + return rc; + + req->rq_reqlen = reqlen; + + lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs); + lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION); + return 0; +} + +int lustre_pack_request(struct ptlrpc_request *req, __u32 magic, int count, + __u32 *lens, char **bufs) +{ + __u32 size[] = { sizeof(struct ptlrpc_body) }; + + if (!lens) { + LASSERT(count == 1); + lens = size; + } + + LASSERT(count > 0); + LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body)); + + /* only use new format, we don't need to be compatible with 1.4 */ + return lustre_pack_request_v2(req, count, lens, bufs); +} +EXPORT_SYMBOL(lustre_pack_request); + +#if RS_DEBUG +LIST_HEAD(ptlrpc_rs_debug_lru); +spinlock_t ptlrpc_rs_debug_lock; + +#define PTLRPC_RS_DEBUG_LRU_ADD(rs) \ +do { \ + spin_lock(&ptlrpc_rs_debug_lock); \ + list_add_tail(&(rs)->rs_debug_list, &ptlrpc_rs_debug_lru); \ + spin_unlock(&ptlrpc_rs_debug_lock); \ +} while (0) + +#define PTLRPC_RS_DEBUG_LRU_DEL(rs) \ +do { \ + spin_lock(&ptlrpc_rs_debug_lock); \ + list_del(&(rs)->rs_debug_list); \ + spin_unlock(&ptlrpc_rs_debug_lock); \ +} while (0) +#else +# define PTLRPC_RS_DEBUG_LRU_ADD(rs) do {} while (0) +# define PTLRPC_RS_DEBUG_LRU_DEL(rs) do {} while (0) +#endif + +struct ptlrpc_reply_state * +lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt) +{ + struct ptlrpc_reply_state *rs = NULL; + + spin_lock(&svcpt->scp_rep_lock); + + /* See if we have anything in a pool, and wait if nothing */ + while (list_empty(&svcpt->scp_rep_idle)) { + struct l_wait_info lwi; + int rc; + + spin_unlock(&svcpt->scp_rep_lock); + /* If we cannot get anything for some long time, we better + * bail out instead of waiting infinitely */ + lwi = LWI_TIMEOUT(cfs_time_seconds(10), NULL, NULL); + rc = l_wait_event(svcpt->scp_rep_waitq, + !list_empty(&svcpt->scp_rep_idle), &lwi); + if (rc != 0) + goto out; + spin_lock(&svcpt->scp_rep_lock); + } + + rs = list_entry(svcpt->scp_rep_idle.next, + struct ptlrpc_reply_state, rs_list); + list_del(&rs->rs_list); + + spin_unlock(&svcpt->scp_rep_lock); + + memset(rs, 0, svcpt->scp_service->srv_max_reply_size); + rs->rs_size = svcpt->scp_service->srv_max_reply_size; + rs->rs_svcpt = svcpt; + rs->rs_prealloc = 1; +out: + return rs; +} + +void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs) +{ + struct ptlrpc_service_part *svcpt = rs->rs_svcpt; + + spin_lock(&svcpt->scp_rep_lock); + list_add(&rs->rs_list, &svcpt->scp_rep_idle); + spin_unlock(&svcpt->scp_rep_lock); + wake_up(&svcpt->scp_rep_waitq); +} + +int lustre_pack_reply_v2(struct ptlrpc_request *req, int count, + __u32 *lens, char **bufs, int flags) +{ + struct ptlrpc_reply_state *rs; + int msg_len, rc; + + LASSERT(req->rq_reply_state == NULL); + + if ((flags & LPRFL_EARLY_REPLY) == 0) { + spin_lock(&req->rq_lock); + req->rq_packed_final = 1; + spin_unlock(&req->rq_lock); + } + + msg_len = lustre_msg_size_v2(count, lens); + rc = sptlrpc_svc_alloc_rs(req, msg_len); + if (rc) + return rc; + + rs = req->rq_reply_state; + atomic_set(&rs->rs_refcount, 1); /* 1 ref for rq_reply_state */ + rs->rs_cb_id.cbid_fn = reply_out_callback; + rs->rs_cb_id.cbid_arg = rs; + rs->rs_svcpt = req->rq_rqbd->rqbd_svcpt; + INIT_LIST_HEAD(&rs->rs_exp_list); + INIT_LIST_HEAD(&rs->rs_obd_list); + INIT_LIST_HEAD(&rs->rs_list); + spin_lock_init(&rs->rs_lock); + + req->rq_replen = msg_len; + req->rq_reply_state = rs; + req->rq_repmsg = rs->rs_msg; + + lustre_init_msg_v2(rs->rs_msg, count, lens, bufs); + lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION); + + PTLRPC_RS_DEBUG_LRU_ADD(rs); + + return 0; +} +EXPORT_SYMBOL(lustre_pack_reply_v2); + +int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens, + char **bufs, int flags) +{ + int rc = 0; + __u32 size[] = { sizeof(struct ptlrpc_body) }; + + if (!lens) { + LASSERT(count == 1); + lens = size; + } + + LASSERT(count > 0); + LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body)); + + switch (req->rq_reqmsg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + rc = lustre_pack_reply_v2(req, count, lens, bufs, flags); + break; + default: + LASSERTF(0, "incorrect message magic: %08x\n", + req->rq_reqmsg->lm_magic); + rc = -EINVAL; + } + if (rc != 0) + CERROR("lustre_pack_reply failed: rc=%d size=%d\n", rc, + lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens)); + return rc; +} +EXPORT_SYMBOL(lustre_pack_reply_flags); + +int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens, + char **bufs) +{ + return lustre_pack_reply_flags(req, count, lens, bufs, 0); +} +EXPORT_SYMBOL(lustre_pack_reply); + +void *lustre_msg_buf_v2(struct lustre_msg_v2 *m, int n, int min_size) +{ + int i, offset, buflen, bufcount; + + LASSERT(m != NULL); + LASSERT(n >= 0); + + bufcount = m->lm_bufcount; + if (unlikely(n >= bufcount)) { + CDEBUG(D_INFO, "msg %p buffer[%d] not present (count %d)\n", + m, n, bufcount); + return NULL; + } + + buflen = m->lm_buflens[n]; + if (unlikely(buflen < min_size)) { + CERROR("msg %p buffer[%d] size %d too small (required %d, opc=%d)\n", + m, n, buflen, min_size, + n == MSG_PTLRPC_BODY_OFF ? -1 : lustre_msg_get_opc(m)); + return NULL; + } + + offset = lustre_msg_hdr_size_v2(bufcount); + for (i = 0; i < n; i++) + offset += cfs_size_round(m->lm_buflens[i]); + + return (char *)m + offset; +} + +void *lustre_msg_buf(struct lustre_msg *m, int n, int min_size) +{ + switch (m->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_buf_v2(m, n, min_size); + default: + LASSERTF(0, "incorrect message magic: %08x(msg:%p)\n", m->lm_magic, m); + return NULL; + } +} +EXPORT_SYMBOL(lustre_msg_buf); + +int lustre_shrink_msg_v2(struct lustre_msg_v2 *msg, int segment, + unsigned int newlen, int move_data) +{ + char *tail = NULL, *newpos; + int tail_len = 0, n; + + LASSERT(msg); + LASSERT(msg->lm_bufcount > segment); + LASSERT(msg->lm_buflens[segment] >= newlen); + + if (msg->lm_buflens[segment] == newlen) + goto out; + + if (move_data && msg->lm_bufcount > segment + 1) { + tail = lustre_msg_buf_v2(msg, segment + 1, 0); + for (n = segment + 1; n < msg->lm_bufcount; n++) + tail_len += cfs_size_round(msg->lm_buflens[n]); + } + + msg->lm_buflens[segment] = newlen; + + if (tail && tail_len) { + newpos = lustre_msg_buf_v2(msg, segment + 1, 0); + LASSERT(newpos <= tail); + if (newpos != tail) + memmove(newpos, tail, tail_len); + } +out: + return lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens); +} + +/* + * for @msg, shrink @segment to size @newlen. if @move_data is non-zero, + * we also move data forward from @segment + 1. + * + * if @newlen == 0, we remove the segment completely, but we still keep the + * totally bufcount the same to save possible data moving. this will leave a + * unused segment with size 0 at the tail, but that's ok. + * + * return new msg size after shrinking. + * + * CAUTION: + * + if any buffers higher than @segment has been filled in, must call shrink + * with non-zero @move_data. + * + caller should NOT keep pointers to msg buffers which higher than @segment + * after call shrink. + */ +int lustre_shrink_msg(struct lustre_msg *msg, int segment, + unsigned int newlen, int move_data) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_shrink_msg_v2(msg, segment, newlen, move_data); + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_shrink_msg); + +void lustre_free_reply_state(struct ptlrpc_reply_state *rs) +{ + PTLRPC_RS_DEBUG_LRU_DEL(rs); + + LASSERT(atomic_read(&rs->rs_refcount) == 0); + LASSERT(!rs->rs_difficult || rs->rs_handled); + LASSERT(!rs->rs_on_net); + LASSERT(!rs->rs_scheduled); + LASSERT(rs->rs_export == NULL); + LASSERT(rs->rs_nlocks == 0); + LASSERT(list_empty(&rs->rs_exp_list)); + LASSERT(list_empty(&rs->rs_obd_list)); + + sptlrpc_svc_free_rs(rs); +} +EXPORT_SYMBOL(lustre_free_reply_state); + +static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len) +{ + int swabbed, required_len, i; + + /* Now we know the sender speaks my language. */ + required_len = lustre_msg_hdr_size_v2(0); + if (len < required_len) { + /* can't even look inside the message */ + CERROR("message length %d too small for lustre_msg\n", len); + return -EINVAL; + } + + swabbed = (m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED); + + if (swabbed) { + __swab32s(&m->lm_magic); + __swab32s(&m->lm_bufcount); + __swab32s(&m->lm_secflvr); + __swab32s(&m->lm_repsize); + __swab32s(&m->lm_cksum); + __swab32s(&m->lm_flags); + CLASSERT(offsetof(typeof(*m), lm_padding_2) != 0); + CLASSERT(offsetof(typeof(*m), lm_padding_3) != 0); + } + + required_len = lustre_msg_hdr_size_v2(m->lm_bufcount); + if (len < required_len) { + /* didn't receive all the buffer lengths */ + CERROR("message length %d too small for %d buflens\n", + len, m->lm_bufcount); + return -EINVAL; + } + + for (i = 0; i < m->lm_bufcount; i++) { + if (swabbed) + __swab32s(&m->lm_buflens[i]); + required_len += cfs_size_round(m->lm_buflens[i]); + } + + if (len < required_len) { + CERROR("len: %d, required_len %d\n", len, required_len); + CERROR("bufcount: %d\n", m->lm_bufcount); + for (i = 0; i < m->lm_bufcount; i++) + CERROR("buffer %d length %d\n", i, m->lm_buflens[i]); + return -EINVAL; + } + + return swabbed; +} + +int __lustre_unpack_msg(struct lustre_msg *m, int len) +{ + int required_len, rc; + + /* We can provide a slightly better error log, if we check the + * message magic and version first. In the future, struct + * lustre_msg may grow, and we'd like to log a version mismatch, + * rather than a short message. + * + */ + required_len = offsetof(struct lustre_msg, lm_magic) + + sizeof(m->lm_magic); + if (len < required_len) { + /* can't even look inside the message */ + CERROR("message length %d too small for magic/version check\n", + len); + return -EINVAL; + } + + rc = lustre_unpack_msg_v2(m, len); + + return rc; +} +EXPORT_SYMBOL(__lustre_unpack_msg); + +int ptlrpc_unpack_req_msg(struct ptlrpc_request *req, int len) +{ + int rc; + rc = __lustre_unpack_msg(req->rq_reqmsg, len); + if (rc == 1) { + lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF); + rc = 0; + } + return rc; +} +EXPORT_SYMBOL(ptlrpc_unpack_req_msg); + +int ptlrpc_unpack_rep_msg(struct ptlrpc_request *req, int len) +{ + int rc; + rc = __lustre_unpack_msg(req->rq_repmsg, len); + if (rc == 1) { + lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF); + rc = 0; + } + return rc; +} +EXPORT_SYMBOL(ptlrpc_unpack_rep_msg); + +static inline int lustre_unpack_ptlrpc_body_v2(struct ptlrpc_request *req, + const int inout, int offset) +{ + struct ptlrpc_body *pb; + struct lustre_msg_v2 *m = inout ? req->rq_reqmsg : req->rq_repmsg; + + pb = lustre_msg_buf_v2(m, offset, sizeof(struct ptlrpc_body_v2)); + if (!pb) { + CERROR("error unpacking ptlrpc body\n"); + return -EFAULT; + } + if (ptlrpc_buf_need_swab(req, inout, offset)) { + lustre_swab_ptlrpc_body(pb); + ptlrpc_buf_set_swabbed(req, inout, offset); + } + + if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) { + CERROR("wrong lustre_msg version %08x\n", pb->pb_version); + return -EINVAL; + } + + if (!inout) + pb->pb_status = ptlrpc_status_ntoh(pb->pb_status); + + return 0; +} + +int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset) +{ + switch (req->rq_reqmsg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_unpack_ptlrpc_body_v2(req, 1, offset); + default: + CERROR("bad lustre msg magic: %08x\n", + req->rq_reqmsg->lm_magic); + return -EINVAL; + } +} + +int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset) +{ + switch (req->rq_repmsg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_unpack_ptlrpc_body_v2(req, 0, offset); + default: + CERROR("bad lustre msg magic: %08x\n", + req->rq_repmsg->lm_magic); + return -EINVAL; + } +} + +static inline int lustre_msg_buflen_v2(struct lustre_msg_v2 *m, int n) +{ + if (n >= m->lm_bufcount) + return 0; + + return m->lm_buflens[n]; +} + +/** + * lustre_msg_buflen - return the length of buffer \a n in message \a m + * \param m lustre_msg (request or reply) to look at + * \param n message index (base 0) + * + * returns zero for non-existent message indices + */ +int lustre_msg_buflen(struct lustre_msg *m, int n) +{ + switch (m->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_msg_buflen_v2(m, n); + default: + CERROR("incorrect message magic: %08x\n", m->lm_magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_buflen); + +static inline void +lustre_msg_set_buflen_v2(struct lustre_msg_v2 *m, int n, int len) +{ + if (n >= m->lm_bufcount) + LBUG(); + + m->lm_buflens[n] = len; +} + +void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len) +{ + switch (m->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + lustre_msg_set_buflen_v2(m, n, len); + return; + default: + LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic); + } +} + +EXPORT_SYMBOL(lustre_msg_set_buflen); + +/* NB return the bufcount for lustre_msg_v2 format, so if message is packed + * in V1 format, the result is one bigger. (add struct ptlrpc_body). */ +int lustre_msg_bufcount(struct lustre_msg *m) +{ + switch (m->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return m->lm_bufcount; + default: + CERROR("incorrect message magic: %08x\n", m->lm_magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_bufcount); + +char *lustre_msg_string(struct lustre_msg *m, int index, int max_len) +{ + /* max_len == 0 means the string should fill the buffer */ + char *str; + int slen, blen; + + switch (m->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + str = lustre_msg_buf_v2(m, index, 0); + blen = lustre_msg_buflen_v2(m, index); + break; + default: + LASSERTF(0, "incorrect message magic: %08x\n", m->lm_magic); + } + + if (str == NULL) { + CERROR("can't unpack string in msg %p buffer[%d]\n", m, index); + return NULL; + } + + slen = strnlen(str, blen); + + if (slen == blen) { /* not NULL terminated */ + CERROR("can't unpack non-NULL terminated string in msg %p buffer[%d] len %d\n", + m, index, blen); + return NULL; + } + + if (max_len == 0) { + if (slen != blen - 1) { + CERROR("can't unpack short string in msg %p buffer[%d] len %d: strlen %d\n", + m, index, blen, slen); + return NULL; + } + } else if (slen > max_len) { + CERROR("can't unpack oversized string in msg %p buffer[%d] len %d strlen %d: max %d expected\n", + m, index, blen, slen, max_len); + return NULL; + } + + return str; +} +EXPORT_SYMBOL(lustre_msg_string); + +/* Wrap up the normal fixed length cases */ +static inline void *__lustre_swab_buf(struct lustre_msg *msg, int index, + int min_size, void *swabber) +{ + void *ptr = NULL; + + LASSERT(msg != NULL); + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + ptr = lustre_msg_buf_v2(msg, index, min_size); + break; + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + } + + if (ptr && swabber) + ((void (*)(void *))swabber)(ptr); + + return ptr; +} + +static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg) +{ + return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF, + sizeof(struct ptlrpc_body_v2)); +} + +__u32 lustre_msghdr_get_flags(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + case LUSTRE_MSG_MAGIC_V1_SWABBED: + return 0; + case LUSTRE_MSG_MAGIC_V2: + /* already in host endian */ + return msg->lm_flags; + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msghdr_get_flags); + +void lustre_msghdr_set_flags(struct lustre_msg *msg, __u32 flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: + msg->lm_flags = flags; + return; + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} + +__u32 lustre_msg_get_flags(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_flags; + } + default: + /* flags might be printed in debug code while message + * uninitialized */ + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_flags); + +void lustre_msg_add_flags(struct lustre_msg *msg, int flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_flags |= flags; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_add_flags); + +void lustre_msg_set_flags(struct lustre_msg *msg, int flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_flags = flags; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_flags); + +void lustre_msg_clear_flags(struct lustre_msg *msg, int flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_flags &= ~(MSG_GEN_FLAG_MASK & flags); + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_clear_flags); + +__u32 lustre_msg_get_op_flags(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_op_flags; + } + default: + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_op_flags); + +void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_op_flags |= flags; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_add_op_flags); + +void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_op_flags |= flags; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_op_flags); + +struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return NULL; + } + return &pb->pb_handle; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return NULL; + } +} +EXPORT_SYMBOL(lustre_msg_get_handle); + +__u32 lustre_msg_get_type(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return PTL_RPC_MSG_ERR; + } + return pb->pb_type; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return PTL_RPC_MSG_ERR; + } +} +EXPORT_SYMBOL(lustre_msg_get_type); + +__u32 lustre_msg_get_version(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_version; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_version); + +void lustre_msg_add_version(struct lustre_msg *msg, int version) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_version |= version; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_add_version); + +__u32 lustre_msg_get_opc(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_opc; + } + default: + CERROR("incorrect message magic: %08x(msg:%p)\n", msg->lm_magic, msg); + LBUG(); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_opc); + +__u64 lustre_msg_get_last_xid(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_last_xid; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_last_xid); + +__u64 lustre_msg_get_last_committed(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_last_committed; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_last_committed); + +__u64 *lustre_msg_get_versions(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return NULL; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return NULL; + } + return pb->pb_pre_versions; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return NULL; + } +} +EXPORT_SYMBOL(lustre_msg_get_versions); + +__u64 lustre_msg_get_transno(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_transno; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_transno); + +int lustre_msg_get_status(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return -EINVAL; + } + return pb->pb_status; + } + default: + /* status might be printed in debug code while message + * uninitialized */ + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_get_status); + +__u64 lustre_msg_get_slv(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return -EINVAL; + } + return pb->pb_slv; + } + default: + CERROR("invalid msg magic %08x\n", msg->lm_magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_get_slv); + + +void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return; + } + pb->pb_slv = slv; + return; + } + default: + CERROR("invalid msg magic %x\n", msg->lm_magic); + return; + } +} +EXPORT_SYMBOL(lustre_msg_set_slv); + +__u32 lustre_msg_get_limit(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return -EINVAL; + } + return pb->pb_limit; + } + default: + CERROR("invalid msg magic %x\n", msg->lm_magic); + return -EINVAL; + } +} +EXPORT_SYMBOL(lustre_msg_get_limit); + + +void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return; + } + pb->pb_limit = limit; + return; + } + default: + CERROR("invalid msg magic %08x\n", msg->lm_magic); + return; + } +} +EXPORT_SYMBOL(lustre_msg_set_limit); + +__u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + } + return pb->pb_conn_cnt; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_conn_cnt); + +int lustre_msg_is_v1(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + case LUSTRE_MSG_MAGIC_V1_SWABBED: + return 1; + default: + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_is_v1); + +__u32 lustre_msg_get_magic(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return msg->lm_magic; + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} +EXPORT_SYMBOL(lustre_msg_get_magic); + +__u32 lustre_msg_get_timeout(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + case LUSTRE_MSG_MAGIC_V1_SWABBED: + return 0; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + + } + return pb->pb_timeout; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} + +__u32 lustre_msg_get_service_time(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + case LUSTRE_MSG_MAGIC_V1_SWABBED: + return 0; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + if (!pb) { + CERROR("invalid msg %p: no ptlrpc body!\n", msg); + return 0; + + } + return pb->pb_service_time; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} + +char *lustre_msg_get_jobid(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + case LUSTRE_MSG_MAGIC_V1_SWABBED: + return NULL; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = + lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF, + sizeof(struct ptlrpc_body)); + if (!pb) + return NULL; + + return pb->pb_jobid; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return NULL; + } +} +EXPORT_SYMBOL(lustre_msg_get_jobid); + +__u32 lustre_msg_get_cksum(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return msg->lm_cksum; + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} + +__u32 lustre_msg_calc_cksum(struct lustre_msg *msg) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + __u32 crc; + unsigned int hsize = 4; + cfs_crypto_hash_digest(CFS_HASH_ALG_CRC32, (unsigned char *)pb, + lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF), + NULL, 0, (unsigned char *)&crc, &hsize); + return crc; + } + default: + CERROR("incorrect message magic: %08x\n", msg->lm_magic); + return 0; + } +} + +void lustre_msg_set_handle(struct lustre_msg *msg, struct lustre_handle *handle) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_handle = *handle; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_handle); + +void lustre_msg_set_type(struct lustre_msg *msg, __u32 type) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_type = type; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_type); + +void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_opc = opc; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_opc); + +void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_last_xid = last_xid; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_last_xid); + +void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_last_committed = last_committed; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_last_committed); + +void lustre_msg_set_versions(struct lustre_msg *msg, __u64 *versions) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_pre_versions[0] = versions[0]; + pb->pb_pre_versions[1] = versions[1]; + pb->pb_pre_versions[2] = versions[2]; + pb->pb_pre_versions[3] = versions[3]; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_versions); + +void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_transno = transno; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_transno); + +void lustre_msg_set_status(struct lustre_msg *msg, __u32 status) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_status = status; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_status); + +void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_conn_cnt = conn_cnt; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_conn_cnt); + +void lustre_msg_set_timeout(struct lustre_msg *msg, __u32 timeout) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_timeout = timeout; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} + +void lustre_msg_set_service_time(struct lustre_msg *msg, __u32 service_time) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: { + struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + pb->pb_service_time = service_time; + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} + +void lustre_msg_set_jobid(struct lustre_msg *msg, char *jobid) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: { + __u32 opc = lustre_msg_get_opc(msg); + struct ptlrpc_body *pb; + + /* Don't set jobid for ldlm ast RPCs, they've been shrunk. + * See the comment in ptlrpc_request_pack(). */ + if (!opc || opc == LDLM_BL_CALLBACK || + opc == LDLM_CP_CALLBACK || opc == LDLM_GL_CALLBACK) + return; + + pb = lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF, + sizeof(struct ptlrpc_body)); + LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); + + if (jobid != NULL) + memcpy(pb->pb_jobid, jobid, JOBSTATS_JOBID_SIZE); + else if (pb->pb_jobid[0] == '\0') + lustre_get_jobid(pb->pb_jobid); + return; + } + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} +EXPORT_SYMBOL(lustre_msg_set_jobid); + +void lustre_msg_set_cksum(struct lustre_msg *msg, __u32 cksum) +{ + switch (msg->lm_magic) { + case LUSTRE_MSG_MAGIC_V1: + return; + case LUSTRE_MSG_MAGIC_V2: + msg->lm_cksum = cksum; + return; + default: + LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); + } +} + + +void ptlrpc_request_set_replen(struct ptlrpc_request *req) +{ + int count = req_capsule_filled_sizes(&req->rq_pill, RCL_SERVER); + + req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, + req->rq_pill.rc_area[RCL_SERVER]); + if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2) + req->rq_reqmsg->lm_repsize = req->rq_replen; +} +EXPORT_SYMBOL(ptlrpc_request_set_replen); + +void ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, __u32 *lens) +{ + req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens); + if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2) + req->rq_reqmsg->lm_repsize = req->rq_replen; +} +EXPORT_SYMBOL(ptlrpc_req_set_repsize); + +/** + * Send a remote set_info_async. + * + * This may go from client to server or server to client. + */ +int do_set_info_async(struct obd_import *imp, + int opcode, int version, + u32 keylen, void *key, + u32 vallen, void *val, + struct ptlrpc_request_set *set) +{ + struct ptlrpc_request *req; + char *tmp; + int rc; + + req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO); + if (req == NULL) + return -ENOMEM; + + req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, + RCL_CLIENT, keylen); + req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL, + RCL_CLIENT, vallen); + rc = ptlrpc_request_pack(req, version, opcode); + if (rc) { + ptlrpc_request_free(req); + return rc; + } + + tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); + memcpy(tmp, key, keylen); + tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL); + memcpy(tmp, val, vallen); + + ptlrpc_request_set_replen(req); + + if (set) { + ptlrpc_set_add_req(set, req); + ptlrpc_check_set(NULL, set); + } else { + rc = ptlrpc_queue_wait(req); + ptlrpc_req_finished(req); + } + + return rc; +} +EXPORT_SYMBOL(do_set_info_async); + +/* byte flipping routines for all wire types declared in + * lustre_idl.h implemented here. + */ +void lustre_swab_ptlrpc_body(struct ptlrpc_body *b) +{ + __swab32s(&b->pb_type); + __swab32s(&b->pb_version); + __swab32s(&b->pb_opc); + __swab32s(&b->pb_status); + __swab64s(&b->pb_last_xid); + __swab64s(&b->pb_last_seen); + __swab64s(&b->pb_last_committed); + __swab64s(&b->pb_transno); + __swab32s(&b->pb_flags); + __swab32s(&b->pb_op_flags); + __swab32s(&b->pb_conn_cnt); + __swab32s(&b->pb_timeout); + __swab32s(&b->pb_service_time); + __swab32s(&b->pb_limit); + __swab64s(&b->pb_slv); + __swab64s(&b->pb_pre_versions[0]); + __swab64s(&b->pb_pre_versions[1]); + __swab64s(&b->pb_pre_versions[2]); + __swab64s(&b->pb_pre_versions[3]); + CLASSERT(offsetof(typeof(*b), pb_padding) != 0); + /* While we need to maintain compatibility between + * clients and servers without ptlrpc_body_v2 (< 2.3) + * do not swab any fields beyond pb_jobid, as we are + * using this swab function for both ptlrpc_body + * and ptlrpc_body_v2. */ + CLASSERT(offsetof(typeof(*b), pb_jobid) != 0); +} +EXPORT_SYMBOL(lustre_swab_ptlrpc_body); + +void lustre_swab_connect(struct obd_connect_data *ocd) +{ + __swab64s(&ocd->ocd_connect_flags); + __swab32s(&ocd->ocd_version); + __swab32s(&ocd->ocd_grant); + __swab64s(&ocd->ocd_ibits_known); + __swab32s(&ocd->ocd_index); + __swab32s(&ocd->ocd_brw_size); + /* ocd_blocksize and ocd_inodespace don't need to be swabbed because + * they are 8-byte values */ + __swab16s(&ocd->ocd_grant_extent); + __swab32s(&ocd->ocd_unused); + __swab64s(&ocd->ocd_transno); + __swab32s(&ocd->ocd_group); + __swab32s(&ocd->ocd_cksum_types); + __swab32s(&ocd->ocd_instance); + /* Fields after ocd_cksum_types are only accessible by the receiver + * if the corresponding flag in ocd_connect_flags is set. Accessing + * any field after ocd_maxbytes on the receiver without a valid flag + * may result in out-of-bound memory access and kernel oops. */ + if (ocd->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE) + __swab32s(&ocd->ocd_max_easize); + if (ocd->ocd_connect_flags & OBD_CONNECT_MAXBYTES) + __swab64s(&ocd->ocd_maxbytes); + CLASSERT(offsetof(typeof(*ocd), padding1) != 0); + CLASSERT(offsetof(typeof(*ocd), padding2) != 0); + CLASSERT(offsetof(typeof(*ocd), padding3) != 0); + CLASSERT(offsetof(typeof(*ocd), padding4) != 0); + CLASSERT(offsetof(typeof(*ocd), padding5) != 0); + CLASSERT(offsetof(typeof(*ocd), padding6) != 0); + CLASSERT(offsetof(typeof(*ocd), padding7) != 0); + CLASSERT(offsetof(typeof(*ocd), padding8) != 0); + CLASSERT(offsetof(typeof(*ocd), padding9) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingA) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingB) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingC) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingD) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingE) != 0); + CLASSERT(offsetof(typeof(*ocd), paddingF) != 0); +} + +void lustre_swab_obdo(struct obdo *o) +{ + __swab64s(&o->o_valid); + lustre_swab_ost_id(&o->o_oi); + __swab64s(&o->o_parent_seq); + __swab64s(&o->o_size); + __swab64s(&o->o_mtime); + __swab64s(&o->o_atime); + __swab64s(&o->o_ctime); + __swab64s(&o->o_blocks); + __swab64s(&o->o_grant); + __swab32s(&o->o_blksize); + __swab32s(&o->o_mode); + __swab32s(&o->o_uid); + __swab32s(&o->o_gid); + __swab32s(&o->o_flags); + __swab32s(&o->o_nlink); + __swab32s(&o->o_parent_oid); + __swab32s(&o->o_misc); + __swab64s(&o->o_ioepoch); + __swab32s(&o->o_stripe_idx); + __swab32s(&o->o_parent_ver); + /* o_handle is opaque */ + /* o_lcookie is swabbed elsewhere */ + __swab32s(&o->o_uid_h); + __swab32s(&o->o_gid_h); + __swab64s(&o->o_data_version); + CLASSERT(offsetof(typeof(*o), o_padding_4) != 0); + CLASSERT(offsetof(typeof(*o), o_padding_5) != 0); + CLASSERT(offsetof(typeof(*o), o_padding_6) != 0); + +} +EXPORT_SYMBOL(lustre_swab_obdo); + +void lustre_swab_obd_statfs(struct obd_statfs *os) +{ + __swab64s(&os->os_type); + __swab64s(&os->os_blocks); + __swab64s(&os->os_bfree); + __swab64s(&os->os_bavail); + __swab64s(&os->os_files); + __swab64s(&os->os_ffree); + /* no need to swab os_fsid */ + __swab32s(&os->os_bsize); + __swab32s(&os->os_namelen); + __swab64s(&os->os_maxbytes); + __swab32s(&os->os_state); + CLASSERT(offsetof(typeof(*os), os_fprecreated) != 0); + CLASSERT(offsetof(typeof(*os), os_spare2) != 0); + CLASSERT(offsetof(typeof(*os), os_spare3) != 0); + CLASSERT(offsetof(typeof(*os), os_spare4) != 0); + CLASSERT(offsetof(typeof(*os), os_spare5) != 0); + CLASSERT(offsetof(typeof(*os), os_spare6) != 0); + CLASSERT(offsetof(typeof(*os), os_spare7) != 0); + CLASSERT(offsetof(typeof(*os), os_spare8) != 0); + CLASSERT(offsetof(typeof(*os), os_spare9) != 0); +} +EXPORT_SYMBOL(lustre_swab_obd_statfs); + +void lustre_swab_obd_ioobj(struct obd_ioobj *ioo) +{ + lustre_swab_ost_id(&ioo->ioo_oid); + __swab32s(&ioo->ioo_max_brw); + __swab32s(&ioo->ioo_bufcnt); +} +EXPORT_SYMBOL(lustre_swab_obd_ioobj); + +void lustre_swab_niobuf_remote(struct niobuf_remote *nbr) +{ + __swab64s(&nbr->offset); + __swab32s(&nbr->len); + __swab32s(&nbr->flags); +} +EXPORT_SYMBOL(lustre_swab_niobuf_remote); + +void lustre_swab_ost_body(struct ost_body *b) +{ + lustre_swab_obdo(&b->oa); +} +EXPORT_SYMBOL(lustre_swab_ost_body); + +void lustre_swab_ost_last_id(u64 *id) +{ + __swab64s(id); +} +EXPORT_SYMBOL(lustre_swab_ost_last_id); + +void lustre_swab_generic_32s(__u32 *val) +{ + __swab32s(val); +} +EXPORT_SYMBOL(lustre_swab_generic_32s); + +void lustre_swab_gl_desc(union ldlm_gl_desc *desc) +{ + lustre_swab_lu_fid(&desc->lquota_desc.gl_id.qid_fid); + __swab64s(&desc->lquota_desc.gl_flags); + __swab64s(&desc->lquota_desc.gl_ver); + __swab64s(&desc->lquota_desc.gl_hardlimit); + __swab64s(&desc->lquota_desc.gl_softlimit); + __swab64s(&desc->lquota_desc.gl_time); + CLASSERT(offsetof(typeof(desc->lquota_desc), gl_pad2) != 0); +} + +void lustre_swab_ost_lvb_v1(struct ost_lvb_v1 *lvb) +{ + __swab64s(&lvb->lvb_size); + __swab64s(&lvb->lvb_mtime); + __swab64s(&lvb->lvb_atime); + __swab64s(&lvb->lvb_ctime); + __swab64s(&lvb->lvb_blocks); +} +EXPORT_SYMBOL(lustre_swab_ost_lvb_v1); + +void lustre_swab_ost_lvb(struct ost_lvb *lvb) +{ + __swab64s(&lvb->lvb_size); + __swab64s(&lvb->lvb_mtime); + __swab64s(&lvb->lvb_atime); + __swab64s(&lvb->lvb_ctime); + __swab64s(&lvb->lvb_blocks); + __swab32s(&lvb->lvb_mtime_ns); + __swab32s(&lvb->lvb_atime_ns); + __swab32s(&lvb->lvb_ctime_ns); + __swab32s(&lvb->lvb_padding); +} +EXPORT_SYMBOL(lustre_swab_ost_lvb); + +void lustre_swab_lquota_lvb(struct lquota_lvb *lvb) +{ + __swab64s(&lvb->lvb_flags); + __swab64s(&lvb->lvb_id_may_rel); + __swab64s(&lvb->lvb_id_rel); + __swab64s(&lvb->lvb_id_qunit); + __swab64s(&lvb->lvb_pad1); +} +EXPORT_SYMBOL(lustre_swab_lquota_lvb); + +void lustre_swab_mdt_body(struct mdt_body *b) +{ + lustre_swab_lu_fid(&b->fid1); + lustre_swab_lu_fid(&b->fid2); + /* handle is opaque */ + __swab64s(&b->valid); + __swab64s(&b->size); + __swab64s(&b->mtime); + __swab64s(&b->atime); + __swab64s(&b->ctime); + __swab64s(&b->blocks); + __swab64s(&b->ioepoch); + __swab64s(&b->t_state); + __swab32s(&b->fsuid); + __swab32s(&b->fsgid); + __swab32s(&b->capability); + __swab32s(&b->mode); + __swab32s(&b->uid); + __swab32s(&b->gid); + __swab32s(&b->flags); + __swab32s(&b->rdev); + __swab32s(&b->nlink); + CLASSERT(offsetof(typeof(*b), unused2) != 0); + __swab32s(&b->suppgid); + __swab32s(&b->eadatasize); + __swab32s(&b->aclsize); + __swab32s(&b->max_mdsize); + __swab32s(&b->max_cookiesize); + __swab32s(&b->uid_h); + __swab32s(&b->gid_h); + CLASSERT(offsetof(typeof(*b), padding_5) != 0); +} +EXPORT_SYMBOL(lustre_swab_mdt_body); + +void lustre_swab_mdt_ioepoch(struct mdt_ioepoch *b) +{ + /* handle is opaque */ + __swab64s(&b->ioepoch); + __swab32s(&b->flags); + CLASSERT(offsetof(typeof(*b), padding) != 0); +} +EXPORT_SYMBOL(lustre_swab_mdt_ioepoch); + +void lustre_swab_mgs_target_info(struct mgs_target_info *mti) +{ + int i; + __swab32s(&mti->mti_lustre_ver); + __swab32s(&mti->mti_stripe_index); + __swab32s(&mti->mti_config_ver); + __swab32s(&mti->mti_flags); + __swab32s(&mti->mti_instance); + __swab32s(&mti->mti_nid_count); + CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64)); + for (i = 0; i < MTI_NIDS_MAX; i++) + __swab64s(&mti->mti_nids[i]); +} +EXPORT_SYMBOL(lustre_swab_mgs_target_info); + +void lustre_swab_mgs_nidtbl_entry(struct mgs_nidtbl_entry *entry) +{ + int i; + + __swab64s(&entry->mne_version); + __swab32s(&entry->mne_instance); + __swab32s(&entry->mne_index); + __swab32s(&entry->mne_length); + + /* mne_nid_(count|type) must be one byte size because we're gonna + * access it w/o swapping. */ + CLASSERT(sizeof(entry->mne_nid_count) == sizeof(__u8)); + CLASSERT(sizeof(entry->mne_nid_type) == sizeof(__u8)); + + /* remove this assertion if ipv6 is supported. */ + LASSERT(entry->mne_nid_type == 0); + for (i = 0; i < entry->mne_nid_count; i++) { + CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64)); + __swab64s(&entry->u.nids[i]); + } +} +EXPORT_SYMBOL(lustre_swab_mgs_nidtbl_entry); + +void lustre_swab_mgs_config_body(struct mgs_config_body *body) +{ + __swab64s(&body->mcb_offset); + __swab32s(&body->mcb_units); + __swab16s(&body->mcb_type); +} +EXPORT_SYMBOL(lustre_swab_mgs_config_body); + +void lustre_swab_mgs_config_res(struct mgs_config_res *body) +{ + __swab64s(&body->mcr_offset); + __swab64s(&body->mcr_size); +} +EXPORT_SYMBOL(lustre_swab_mgs_config_res); + +static void lustre_swab_obd_dqinfo(struct obd_dqinfo *i) +{ + __swab64s(&i->dqi_bgrace); + __swab64s(&i->dqi_igrace); + __swab32s(&i->dqi_flags); + __swab32s(&i->dqi_valid); +} + +static void lustre_swab_obd_dqblk(struct obd_dqblk *b) +{ + __swab64s(&b->dqb_ihardlimit); + __swab64s(&b->dqb_isoftlimit); + __swab64s(&b->dqb_curinodes); + __swab64s(&b->dqb_bhardlimit); + __swab64s(&b->dqb_bsoftlimit); + __swab64s(&b->dqb_curspace); + __swab64s(&b->dqb_btime); + __swab64s(&b->dqb_itime); + __swab32s(&b->dqb_valid); + CLASSERT(offsetof(typeof(*b), dqb_padding) != 0); +} + +void lustre_swab_obd_quotactl(struct obd_quotactl *q) +{ + __swab32s(&q->qc_cmd); + __swab32s(&q->qc_type); + __swab32s(&q->qc_id); + __swab32s(&q->qc_stat); + lustre_swab_obd_dqinfo(&q->qc_dqinfo); + lustre_swab_obd_dqblk(&q->qc_dqblk); +} +EXPORT_SYMBOL(lustre_swab_obd_quotactl); + +void lustre_swab_mdt_remote_perm(struct mdt_remote_perm *p) +{ + __swab32s(&p->rp_uid); + __swab32s(&p->rp_gid); + __swab32s(&p->rp_fsuid); + __swab32s(&p->rp_fsuid_h); + __swab32s(&p->rp_fsgid); + __swab32s(&p->rp_fsgid_h); + __swab32s(&p->rp_access_perm); + __swab32s(&p->rp_padding); +}; +EXPORT_SYMBOL(lustre_swab_mdt_remote_perm); + +void lustre_swab_fid2path(struct getinfo_fid2path *gf) +{ + lustre_swab_lu_fid(&gf->gf_fid); + __swab64s(&gf->gf_recno); + __swab32s(&gf->gf_linkno); + __swab32s(&gf->gf_pathlen); +} +EXPORT_SYMBOL(lustre_swab_fid2path); + +void lustre_swab_fiemap_extent(struct ll_fiemap_extent *fm_extent) +{ + __swab64s(&fm_extent->fe_logical); + __swab64s(&fm_extent->fe_physical); + __swab64s(&fm_extent->fe_length); + __swab32s(&fm_extent->fe_flags); + __swab32s(&fm_extent->fe_device); +} + +void lustre_swab_fiemap(struct ll_user_fiemap *fiemap) +{ + int i; + + __swab64s(&fiemap->fm_start); + __swab64s(&fiemap->fm_length); + __swab32s(&fiemap->fm_flags); + __swab32s(&fiemap->fm_mapped_extents); + __swab32s(&fiemap->fm_extent_count); + __swab32s(&fiemap->fm_reserved); + + for (i = 0; i < fiemap->fm_mapped_extents; i++) + lustre_swab_fiemap_extent(&fiemap->fm_extents[i]); +} +EXPORT_SYMBOL(lustre_swab_fiemap); + +void lustre_swab_idx_info(struct idx_info *ii) +{ + __swab32s(&ii->ii_magic); + __swab32s(&ii->ii_flags); + __swab16s(&ii->ii_count); + __swab32s(&ii->ii_attrs); + lustre_swab_lu_fid(&ii->ii_fid); + __swab64s(&ii->ii_version); + __swab64s(&ii->ii_hash_start); + __swab64s(&ii->ii_hash_end); + __swab16s(&ii->ii_keysize); + __swab16s(&ii->ii_recsize); +} + +void lustre_swab_lip_header(struct lu_idxpage *lip) +{ + /* swab header */ + __swab32s(&lip->lip_magic); + __swab16s(&lip->lip_flags); + __swab16s(&lip->lip_nr); +} +EXPORT_SYMBOL(lustre_swab_lip_header); + +void lustre_swab_mdt_rec_reint (struct mdt_rec_reint *rr) +{ + __swab32s(&rr->rr_opcode); + __swab32s(&rr->rr_cap); + __swab32s(&rr->rr_fsuid); + /* rr_fsuid_h is unused */ + __swab32s(&rr->rr_fsgid); + /* rr_fsgid_h is unused */ + __swab32s(&rr->rr_suppgid1); + /* rr_suppgid1_h is unused */ + __swab32s(&rr->rr_suppgid2); + /* rr_suppgid2_h is unused */ + lustre_swab_lu_fid(&rr->rr_fid1); + lustre_swab_lu_fid(&rr->rr_fid2); + __swab64s(&rr->rr_mtime); + __swab64s(&rr->rr_atime); + __swab64s(&rr->rr_ctime); + __swab64s(&rr->rr_size); + __swab64s(&rr->rr_blocks); + __swab32s(&rr->rr_bias); + __swab32s(&rr->rr_mode); + __swab32s(&rr->rr_flags); + __swab32s(&rr->rr_flags_h); + __swab32s(&rr->rr_umask); + + CLASSERT(offsetof(typeof(*rr), rr_padding_4) != 0); +}; +EXPORT_SYMBOL(lustre_swab_mdt_rec_reint); + +void lustre_swab_lov_desc(struct lov_desc *ld) +{ + __swab32s(&ld->ld_tgt_count); + __swab32s(&ld->ld_active_tgt_count); + __swab32s(&ld->ld_default_stripe_count); + __swab32s(&ld->ld_pattern); + __swab64s(&ld->ld_default_stripe_size); + __swab64s(&ld->ld_default_stripe_offset); + __swab32s(&ld->ld_qos_maxage); + /* uuid endian insensitive */ +} +EXPORT_SYMBOL(lustre_swab_lov_desc); + +void lustre_swab_lmv_desc(struct lmv_desc *ld) +{ + __swab32s(&ld->ld_tgt_count); + __swab32s(&ld->ld_active_tgt_count); + __swab32s(&ld->ld_default_stripe_count); + __swab32s(&ld->ld_pattern); + __swab64s(&ld->ld_default_hash_size); + __swab32s(&ld->ld_qos_maxage); + /* uuid endian insensitive */ +} + +void lustre_swab_lmv_stripe_md(struct lmv_stripe_md *mea) +{ + __swab32s(&mea->mea_magic); + __swab32s(&mea->mea_count); + __swab32s(&mea->mea_master); + CLASSERT(offsetof(typeof(*mea), mea_padding) != 0); +} + +void lustre_swab_lmv_user_md(struct lmv_user_md *lum) +{ + int i; + + __swab32s(&lum->lum_magic); + __swab32s(&lum->lum_stripe_count); + __swab32s(&lum->lum_stripe_offset); + __swab32s(&lum->lum_hash_type); + __swab32s(&lum->lum_type); + CLASSERT(offsetof(typeof(*lum), lum_padding1) != 0); + CLASSERT(offsetof(typeof(*lum), lum_padding2) != 0); + CLASSERT(offsetof(typeof(*lum), lum_padding3) != 0); + + for (i = 0; i < lum->lum_stripe_count; i++) { + __swab32s(&lum->lum_objects[i].lum_mds); + lustre_swab_lu_fid(&lum->lum_objects[i].lum_fid); + } + +} +EXPORT_SYMBOL(lustre_swab_lmv_user_md); + +static void print_lum(struct lov_user_md *lum) +{ + CDEBUG(D_OTHER, "lov_user_md %p:\n", lum); + CDEBUG(D_OTHER, "\tlmm_magic: %#x\n", lum->lmm_magic); + CDEBUG(D_OTHER, "\tlmm_pattern: %#x\n", lum->lmm_pattern); + CDEBUG(D_OTHER, "\tlmm_object_id: %llu\n", lmm_oi_id(&lum->lmm_oi)); + CDEBUG(D_OTHER, "\tlmm_object_gr: %llu\n", lmm_oi_seq(&lum->lmm_oi)); + CDEBUG(D_OTHER, "\tlmm_stripe_size: %#x\n", lum->lmm_stripe_size); + CDEBUG(D_OTHER, "\tlmm_stripe_count: %#x\n", lum->lmm_stripe_count); + CDEBUG(D_OTHER, "\tlmm_stripe_offset/lmm_layout_gen: %#x\n", + lum->lmm_stripe_offset); +} + +static void lustre_swab_lmm_oi(struct ost_id *oi) +{ + __swab64s(&oi->oi.oi_id); + __swab64s(&oi->oi.oi_seq); +} + +static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum) +{ + __swab32s(&lum->lmm_magic); + __swab32s(&lum->lmm_pattern); + lustre_swab_lmm_oi(&lum->lmm_oi); + __swab32s(&lum->lmm_stripe_size); + __swab16s(&lum->lmm_stripe_count); + __swab16s(&lum->lmm_stripe_offset); + print_lum(lum); +} + +void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum) +{ + CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n"); + lustre_swab_lov_user_md_common(lum); +} +EXPORT_SYMBOL(lustre_swab_lov_user_md_v1); + +void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum) +{ + CDEBUG(D_IOCTL, "swabbing lov_user_md v3\n"); + lustre_swab_lov_user_md_common((struct lov_user_md_v1 *)lum); + /* lmm_pool_name nothing to do with char */ +} +EXPORT_SYMBOL(lustre_swab_lov_user_md_v3); + +void lustre_swab_lov_mds_md(struct lov_mds_md *lmm) +{ + CDEBUG(D_IOCTL, "swabbing lov_mds_md\n"); + __swab32s(&lmm->lmm_magic); + __swab32s(&lmm->lmm_pattern); + lustre_swab_lmm_oi(&lmm->lmm_oi); + __swab32s(&lmm->lmm_stripe_size); + __swab16s(&lmm->lmm_stripe_count); + __swab16s(&lmm->lmm_layout_gen); +} +EXPORT_SYMBOL(lustre_swab_lov_mds_md); + +void lustre_swab_lov_user_md_objects(struct lov_user_ost_data *lod, + int stripe_count) +{ + int i; + + for (i = 0; i < stripe_count; i++) { + lustre_swab_ost_id(&(lod[i].l_ost_oi)); + __swab32s(&(lod[i].l_ost_gen)); + __swab32s(&(lod[i].l_ost_idx)); + } +} +EXPORT_SYMBOL(lustre_swab_lov_user_md_objects); + +void lustre_swab_ldlm_res_id(struct ldlm_res_id *id) +{ + int i; + + for (i = 0; i < RES_NAME_SIZE; i++) + __swab64s(&id->name[i]); +} +EXPORT_SYMBOL(lustre_swab_ldlm_res_id); + +void lustre_swab_ldlm_policy_data(ldlm_wire_policy_data_t *d) +{ + /* the lock data is a union and the first two fields are always an + * extent so it's ok to process an LDLM_EXTENT and LDLM_FLOCK lock + * data the same way. */ + __swab64s(&d->l_extent.start); + __swab64s(&d->l_extent.end); + __swab64s(&d->l_extent.gid); + __swab64s(&d->l_flock.lfw_owner); + __swab32s(&d->l_flock.lfw_pid); +} +EXPORT_SYMBOL(lustre_swab_ldlm_policy_data); + +void lustre_swab_ldlm_intent(struct ldlm_intent *i) +{ + __swab64s(&i->opc); +} +EXPORT_SYMBOL(lustre_swab_ldlm_intent); + +void lustre_swab_ldlm_resource_desc(struct ldlm_resource_desc *r) +{ + __swab32s(&r->lr_type); + CLASSERT(offsetof(typeof(*r), lr_padding) != 0); + lustre_swab_ldlm_res_id(&r->lr_name); +} +EXPORT_SYMBOL(lustre_swab_ldlm_resource_desc); + +void lustre_swab_ldlm_lock_desc(struct ldlm_lock_desc *l) +{ + lustre_swab_ldlm_resource_desc(&l->l_resource); + __swab32s(&l->l_req_mode); + __swab32s(&l->l_granted_mode); + lustre_swab_ldlm_policy_data(&l->l_policy_data); +} +EXPORT_SYMBOL(lustre_swab_ldlm_lock_desc); + +void lustre_swab_ldlm_request(struct ldlm_request *rq) +{ + __swab32s(&rq->lock_flags); + lustre_swab_ldlm_lock_desc(&rq->lock_desc); + __swab32s(&rq->lock_count); + /* lock_handle[] opaque */ +} +EXPORT_SYMBOL(lustre_swab_ldlm_request); + +void lustre_swab_ldlm_reply(struct ldlm_reply *r) +{ + __swab32s(&r->lock_flags); + CLASSERT(offsetof(typeof(*r), lock_padding) != 0); + lustre_swab_ldlm_lock_desc(&r->lock_desc); + /* lock_handle opaque */ + __swab64s(&r->lock_policy_res1); + __swab64s(&r->lock_policy_res2); +} +EXPORT_SYMBOL(lustre_swab_ldlm_reply); + +void lustre_swab_quota_body(struct quota_body *b) +{ + lustre_swab_lu_fid(&b->qb_fid); + lustre_swab_lu_fid((struct lu_fid *)&b->qb_id); + __swab32s(&b->qb_flags); + __swab64s(&b->qb_count); + __swab64s(&b->qb_usage); + __swab64s(&b->qb_slv_ver); +} + +/* Dump functions */ +void dump_ioo(struct obd_ioobj *ioo) +{ + CDEBUG(D_RPCTRACE, + "obd_ioobj: ioo_oid=" DOSTID ", ioo_max_brw=%#x, ioo_bufct=%d\n", + POSTID(&ioo->ioo_oid), ioo->ioo_max_brw, + ioo->ioo_bufcnt); +} +EXPORT_SYMBOL(dump_ioo); + +void dump_rniobuf(struct niobuf_remote *nb) +{ + CDEBUG(D_RPCTRACE, "niobuf_remote: offset=%llu, len=%d, flags=%x\n", + nb->offset, nb->len, nb->flags); +} +EXPORT_SYMBOL(dump_rniobuf); + +void dump_obdo(struct obdo *oa) +{ + __u32 valid = oa->o_valid; + + CDEBUG(D_RPCTRACE, "obdo: o_valid = %08x\n", valid); + if (valid & OBD_MD_FLID) + CDEBUG(D_RPCTRACE, "obdo: id = "DOSTID"\n", POSTID(&oa->o_oi)); + if (valid & OBD_MD_FLFID) + CDEBUG(D_RPCTRACE, "obdo: o_parent_seq = %#llx\n", + oa->o_parent_seq); + if (valid & OBD_MD_FLSIZE) + CDEBUG(D_RPCTRACE, "obdo: o_size = %lld\n", oa->o_size); + if (valid & OBD_MD_FLMTIME) + CDEBUG(D_RPCTRACE, "obdo: o_mtime = %lld\n", oa->o_mtime); + if (valid & OBD_MD_FLATIME) + CDEBUG(D_RPCTRACE, "obdo: o_atime = %lld\n", oa->o_atime); + if (valid & OBD_MD_FLCTIME) + CDEBUG(D_RPCTRACE, "obdo: o_ctime = %lld\n", oa->o_ctime); + if (valid & OBD_MD_FLBLOCKS) /* allocation of space */ + CDEBUG(D_RPCTRACE, "obdo: o_blocks = %lld\n", oa->o_blocks); + if (valid & OBD_MD_FLGRANT) + CDEBUG(D_RPCTRACE, "obdo: o_grant = %lld\n", oa->o_grant); + if (valid & OBD_MD_FLBLKSZ) + CDEBUG(D_RPCTRACE, "obdo: o_blksize = %d\n", oa->o_blksize); + if (valid & (OBD_MD_FLTYPE | OBD_MD_FLMODE)) + CDEBUG(D_RPCTRACE, "obdo: o_mode = %o\n", + oa->o_mode & ((valid & OBD_MD_FLTYPE ? S_IFMT : 0) | + (valid & OBD_MD_FLMODE ? ~S_IFMT : 0))); + if (valid & OBD_MD_FLUID) + CDEBUG(D_RPCTRACE, "obdo: o_uid = %u\n", oa->o_uid); + if (valid & OBD_MD_FLUID) + CDEBUG(D_RPCTRACE, "obdo: o_uid_h = %u\n", oa->o_uid_h); + if (valid & OBD_MD_FLGID) + CDEBUG(D_RPCTRACE, "obdo: o_gid = %u\n", oa->o_gid); + if (valid & OBD_MD_FLGID) + CDEBUG(D_RPCTRACE, "obdo: o_gid_h = %u\n", oa->o_gid_h); + if (valid & OBD_MD_FLFLAGS) + CDEBUG(D_RPCTRACE, "obdo: o_flags = %x\n", oa->o_flags); + if (valid & OBD_MD_FLNLINK) + CDEBUG(D_RPCTRACE, "obdo: o_nlink = %u\n", oa->o_nlink); + else if (valid & OBD_MD_FLCKSUM) + CDEBUG(D_RPCTRACE, "obdo: o_checksum (o_nlink) = %u\n", + oa->o_nlink); + if (valid & OBD_MD_FLGENER) + CDEBUG(D_RPCTRACE, "obdo: o_parent_oid = %x\n", + oa->o_parent_oid); + if (valid & OBD_MD_FLEPOCH) + CDEBUG(D_RPCTRACE, "obdo: o_ioepoch = %lld\n", + oa->o_ioepoch); + if (valid & OBD_MD_FLFID) { + CDEBUG(D_RPCTRACE, "obdo: o_stripe_idx = %u\n", + oa->o_stripe_idx); + CDEBUG(D_RPCTRACE, "obdo: o_parent_ver = %x\n", + oa->o_parent_ver); + } + if (valid & OBD_MD_FLHANDLE) + CDEBUG(D_RPCTRACE, "obdo: o_handle = %lld\n", + oa->o_handle.cookie); + if (valid & OBD_MD_FLCOOKIE) + CDEBUG(D_RPCTRACE, "obdo: o_lcookie = (llog_cookie dumping not yet implemented)\n"); +} +EXPORT_SYMBOL(dump_obdo); + +void dump_ost_body(struct ost_body *ob) +{ + dump_obdo(&ob->oa); +} +EXPORT_SYMBOL(dump_ost_body); + +void dump_rcs(__u32 *rc) +{ + CDEBUG(D_RPCTRACE, "rmf_rcs: %d\n", *rc); +} +EXPORT_SYMBOL(dump_rcs); + +static inline int req_ptlrpc_body_swabbed(struct ptlrpc_request *req) +{ + LASSERT(req->rq_reqmsg); + + switch (req->rq_reqmsg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF); + default: + CERROR("bad lustre msg magic: %#08X\n", + req->rq_reqmsg->lm_magic); + } + return 0; +} + +static inline int rep_ptlrpc_body_swabbed(struct ptlrpc_request *req) +{ + LASSERT(req->rq_repmsg); + + switch (req->rq_repmsg->lm_magic) { + case LUSTRE_MSG_MAGIC_V2: + return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF); + default: + /* uninitialized yet */ + return 0; + } +} + +void _debug_req(struct ptlrpc_request *req, + struct libcfs_debug_msg_data *msgdata, + const char *fmt, ...) +{ + int req_ok = req->rq_reqmsg != NULL; + int rep_ok = req->rq_repmsg != NULL; + lnet_nid_t nid = LNET_NID_ANY; + va_list args; + + if (ptlrpc_req_need_swab(req)) { + req_ok = req_ok && req_ptlrpc_body_swabbed(req); + rep_ok = rep_ok && rep_ptlrpc_body_swabbed(req); + } + + if (req->rq_import && req->rq_import->imp_connection) + nid = req->rq_import->imp_connection->c_peer.nid; + else if (req->rq_export && req->rq_export->exp_connection) + nid = req->rq_export->exp_connection->c_peer.nid; + + va_start(args, fmt); + libcfs_debug_vmsg2(msgdata, fmt, args, + " req@%p x%llu/t%lld(%lld) o%d->%s@%s:%d/%d lens %d/%d e %d to %d dl " CFS_TIME_T " ref %d fl " REQ_FLAGS_FMT "/%x/%x rc %d/%d\n", + req, req->rq_xid, req->rq_transno, + req_ok ? lustre_msg_get_transno(req->rq_reqmsg) : 0, + req_ok ? lustre_msg_get_opc(req->rq_reqmsg) : -1, + req->rq_import ? + req->rq_import->imp_obd->obd_name : + req->rq_export ? + req->rq_export->exp_client_uuid.uuid : + "<?>", + libcfs_nid2str(nid), + req->rq_request_portal, req->rq_reply_portal, + req->rq_reqlen, req->rq_replen, + req->rq_early_count, req->rq_timedout, + req->rq_deadline, + atomic_read(&req->rq_refcount), + DEBUG_REQ_FLAGS(req), + req_ok ? lustre_msg_get_flags(req->rq_reqmsg) : -1, + rep_ok ? lustre_msg_get_flags(req->rq_repmsg) : -1, + req->rq_status, + rep_ok ? lustre_msg_get_status(req->rq_repmsg) : -1); + va_end(args); +} +EXPORT_SYMBOL(_debug_req); + +void lustre_swab_lustre_capa(struct lustre_capa *c) +{ + lustre_swab_lu_fid(&c->lc_fid); + __swab64s(&c->lc_opc); + __swab64s(&c->lc_uid); + __swab64s(&c->lc_gid); + __swab32s(&c->lc_flags); + __swab32s(&c->lc_keyid); + __swab32s(&c->lc_timeout); + __swab32s(&c->lc_expiry); +} +EXPORT_SYMBOL(lustre_swab_lustre_capa); + +void lustre_swab_lustre_capa_key(struct lustre_capa_key *k) +{ + __swab64s(&k->lk_seq); + __swab32s(&k->lk_keyid); + CLASSERT(offsetof(typeof(*k), lk_padding) != 0); +} +EXPORT_SYMBOL(lustre_swab_lustre_capa_key); + +void lustre_swab_hsm_user_state(struct hsm_user_state *state) +{ + __swab32s(&state->hus_states); + __swab32s(&state->hus_archive_id); +} +EXPORT_SYMBOL(lustre_swab_hsm_user_state); + +void lustre_swab_hsm_state_set(struct hsm_state_set *hss) +{ + __swab32s(&hss->hss_valid); + __swab64s(&hss->hss_setmask); + __swab64s(&hss->hss_clearmask); + __swab32s(&hss->hss_archive_id); +} +EXPORT_SYMBOL(lustre_swab_hsm_state_set); + +void lustre_swab_hsm_extent(struct hsm_extent *extent) +{ + __swab64s(&extent->offset); + __swab64s(&extent->length); +} + +void lustre_swab_hsm_current_action(struct hsm_current_action *action) +{ + __swab32s(&action->hca_state); + __swab32s(&action->hca_action); + lustre_swab_hsm_extent(&action->hca_location); +} +EXPORT_SYMBOL(lustre_swab_hsm_current_action); + +void lustre_swab_hsm_user_item(struct hsm_user_item *hui) +{ + lustre_swab_lu_fid(&hui->hui_fid); + lustre_swab_hsm_extent(&hui->hui_extent); +} +EXPORT_SYMBOL(lustre_swab_hsm_user_item); + +void lustre_swab_layout_intent(struct layout_intent *li) +{ + __swab32s(&li->li_opc); + __swab32s(&li->li_flags); + __swab64s(&li->li_start); + __swab64s(&li->li_end); +} +EXPORT_SYMBOL(lustre_swab_layout_intent); + +void lustre_swab_hsm_progress_kernel(struct hsm_progress_kernel *hpk) +{ + lustre_swab_lu_fid(&hpk->hpk_fid); + __swab64s(&hpk->hpk_cookie); + __swab64s(&hpk->hpk_extent.offset); + __swab64s(&hpk->hpk_extent.length); + __swab16s(&hpk->hpk_flags); + __swab16s(&hpk->hpk_errval); +} +EXPORT_SYMBOL(lustre_swab_hsm_progress_kernel); + +void lustre_swab_hsm_request(struct hsm_request *hr) +{ + __swab32s(&hr->hr_action); + __swab32s(&hr->hr_archive_id); + __swab64s(&hr->hr_flags); + __swab32s(&hr->hr_itemcount); + __swab32s(&hr->hr_data_len); +} +EXPORT_SYMBOL(lustre_swab_hsm_request); + +void lustre_swab_update_buf(struct update_buf *ub) +{ + __swab32s(&ub->ub_magic); + __swab32s(&ub->ub_count); +} +EXPORT_SYMBOL(lustre_swab_update_buf); + +void lustre_swab_update_reply_buf(struct update_reply *ur) +{ + int i; + + __swab32s(&ur->ur_version); + __swab32s(&ur->ur_count); + for (i = 0; i < ur->ur_count; i++) + __swab32s(&ur->ur_lens[i]); +} +EXPORT_SYMBOL(lustre_swab_update_reply_buf); + +void lustre_swab_swap_layouts(struct mdc_swap_layouts *msl) +{ + __swab64s(&msl->msl_flags); +} +EXPORT_SYMBOL(lustre_swab_swap_layouts); + +void lustre_swab_close_data(struct close_data *cd) +{ + lustre_swab_lu_fid(&cd->cd_fid); + __swab64s(&cd->cd_data_version); +} +EXPORT_SYMBOL(lustre_swab_close_data); |