/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * 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. */ /* * 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 * Author: Phil Schwan * Author: Eric Barton */ #define DEBUG_SUBSYSTEM S_RPC #ifndef __KERNEL__ # include #endif #include #include #include #include #include #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(1,8,99,0) #error "lustre_msg_v1 has been deprecated since 1.6.0, please remove it" #endif static inline int lustre_msg_hdr_size_v1(int count) { return size_round(offsetof(struct lustre_msg_v1, lm_buflens[count])); } static inline int lustre_msg_hdr_size_v2(int count) { return size_round(offsetof(struct lustre_msg_v2, lm_buflens[count])); } int lustre_msg_need_swab(struct lustre_msg *msg) { return (msg->lm_magic == LUSTRE_MSG_MAGIC_V1_SWABBED) || (msg->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED); } 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: return 0; case LUSTRE_MSG_MAGIC_V2: return lustre_msg_check_version_v2(msg, version); default: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return -EINVAL; } } static int ptlrpc_reqbuf_need_swab(struct ptlrpc_request *req, int index) { int swabb; swabb = (!lustre_req_need_swab(req)) || lustre_req_swabbed(req, index); return !swabb; } static int ptlrpc_repbuf_need_swab(struct ptlrpc_request *req, int index) { int swabb; swabb = (!lustre_rep_need_swab(req)) || lustre_rep_swabbed(req, index); return !swabb; } /* early reply size */ int lustre_msg_early_size(struct ptlrpc_request *req) { static int size = 0; /* For b1_6 interoperability */ if (req->rq_reqmsg && req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2) { __u32 pb_len = lustre_msg_buflen(req->rq_reqmsg, MSG_PTLRPC_BODY_OFF); return lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, &pb_len); } if (!size) size = lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, NULL); return size; } EXPORT_SYMBOL(lustre_msg_early_size); static inline int lustre_msg_size_v1(int count, __u32 *lengths) { int size; int i; LASSERT(count >= 0); size = lustre_msg_hdr_size_v1(count); for (i = 0; i < count; i++) size += size_round(lengths[i]); return size; } static inline 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 += size_round(lengths[i]); CDEBUG(D_INFO, "size %d - len %d\n", size, lengths[i]); } return size; } /* 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); #ifdef PTLRPC_INTEROP_1_6 LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body) || lens[MSG_PTLRPC_BODY_OFF] == PTLRPC_BODY_MIN_SIZE); #else LASSERT(lens[MSG_PTLRPC_BODY_OFF] == sizeof(struct ptlrpc_body)); #endif switch (magic) { case LUSTRE_MSG_MAGIC_V1: return lustre_msg_size_v1(count - 1, lens + 1); case LUSTRE_MSG_MAGIC_V2: return lustre_msg_size_v2(count, lens); default: CERROR("incorrect message magic: %08x\n", magic); return 0; } } /* 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_V1: { struct lustre_msg_v1 *v1_msg = (struct lustre_msg_v1 *)msg; return lustre_msg_size_v1(v1_msg->lm_bufcount, v1_msg->lm_buflens); } 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; } } static void lustre_init_msg_v1(void *m, int count, __u32 *lens, char **bufs) { struct lustre_msg_v1 *msg = (struct lustre_msg_v1 *)m; char *ptr; int i; LASSERT(count >= 0); msg->lm_magic = LUSTRE_MSG_MAGIC_V1; msg->lm_version = PTLRPC_MSG_VERSION; msg->lm_bufcount = count; for (i = 0; i < count; i++) msg->lm_buflens[i] = lens[i]; if (bufs == NULL) return; ptr = (char *)msg + lustre_msg_hdr_size_v1(count); for (i = 0; i < count; i++) { char *tmp = bufs[i]; LOGL(tmp, lens[i], ptr); } } static 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); } } static int lustre_pack_request_v1(struct ptlrpc_request *req, int count, __u32 *lens, char **bufs) { int reqlen; reqlen = lustre_msg_size_v1(count, lens); /* See if we got it from prealloc pool */ if (req->rq_reqmsg) { /* Cannot return error here, that would create infinite loop in ptlrpc_prep_req_pool */ /* In this case ptlrpc_prep_req_from_pool sets req->rq_reqlen to maximum size that would fit into this preallocated request */ LASSERTF(req->rq_reqlen >= reqlen, "req->rq_reqlen %d, " "reqlen %d\n",req->rq_reqlen, reqlen); memset(req->rq_reqmsg, 0, reqlen); } else { OBD_ALLOC(req->rq_reqmsg, reqlen); if (req->rq_reqmsg == NULL) { CERROR("alloc reqmsg (len %d) failed\n", reqlen); return -ENOMEM; } } req->rq_reqlen = reqlen; lustre_init_msg_v1(req->rq_reqmsg, count, lens, bufs); return 0; } static int lustre_pack_request_v2(struct ptlrpc_request *req, int count, __u32 *lens, char **bufs) { int reqlen; reqlen = lustre_msg_size_v2(count, lens); /* See if we got it from prealloc pool */ if (req->rq_reqmsg) { /* Cannot return error here, that would create infinite loop in ptlrpc_prep_req_pool */ /* In this case ptlrpc_prep_req_from_pool sets req->rq_reqlen to maximum size that would fit into this preallocated request */ LASSERTF(req->rq_reqlen >= reqlen, "req->rq_reqlen %d, " "reqlen %d\n",req->rq_reqlen, reqlen); memset(req->rq_reqmsg, 0, reqlen); } else { OBD_ALLOC(req->rq_reqmsg, reqlen); if (req->rq_reqmsg == NULL) { CERROR("alloc reqmsg (len %d) failed\n", reqlen); return -ENOMEM; } } req->rq_reqlen = reqlen; lustre_init_msg_v2(req->rq_reqmsg, count, lens, bufs); lustre_msg_add_version(req->rq_reqmsg, PTLRPC_MSG_VERSION); lustre_set_req_swabbed(req, MSG_PTLRPC_BODY_OFF); 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)); switch (magic) { case LUSTRE_MSG_MAGIC_V1: return lustre_pack_request_v1(req, count - 1, lens + 1, bufs ? bufs + 1 : NULL); case LUSTRE_MSG_MAGIC_V2: return lustre_pack_request_v2(req, count, lens, bufs); default: LASSERTF(0, "incorrect message magic: %08x\n", magic); return -EINVAL; } } #if RS_DEBUG CFS_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 static struct ptlrpc_reply_state *lustre_get_emerg_rs(struct ptlrpc_service *svc, int size) { struct ptlrpc_reply_state *rs = NULL; spin_lock(&svc->srv_lock); /* See if we have anything in a pool, and wait if nothing */ while (list_empty(&svc->srv_free_rs_list)) { struct l_wait_info lwi; int rc; spin_unlock(&svc->srv_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(svc->srv_free_rs_waitq, !list_empty(&svc->srv_free_rs_list), &lwi); if (rc) goto out; spin_lock(&svc->srv_lock); } rs = list_entry(svc->srv_free_rs_list.next, struct ptlrpc_reply_state, rs_list); list_del(&rs->rs_list); spin_unlock(&svc->srv_lock); LASSERT(rs); LASSERTF(svc->srv_max_reply_size > size, "Want %d, prealloc %d\n", size, svc->srv_max_reply_size); memset(rs, 0, size); rs->rs_prealloc = 1; out: return rs; } static int lustre_pack_reply_v1(struct ptlrpc_request *req, int count, __u32 *lens, char **bufs, int flags) { struct ptlrpc_reply_state *rs; int msg_len; int size; ENTRY; 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_v1(count, lens); size = sizeof(struct ptlrpc_reply_state) + msg_len; OBD_ALLOC(rs, size); if (unlikely(rs == NULL)) { rs = lustre_get_emerg_rs(req->rq_rqbd->rqbd_service, size); if (!rs) RETURN (-ENOMEM); } 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_service = req->rq_rqbd->rqbd_service; rs->rs_size = size; CFS_INIT_LIST_HEAD(&rs->rs_exp_list); CFS_INIT_LIST_HEAD(&rs->rs_obd_list); rs->rs_msg = (struct lustre_msg *)(rs + 1); req->rq_replen = msg_len; req->rq_reply_state = rs; req->rq_repmsg = rs->rs_msg; lustre_init_msg_v1(rs->rs_msg, count, lens, bufs); PTLRPC_RS_DEBUG_LRU_ADD(rs); RETURN (0); } static 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; int size; ENTRY; 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); } /* use the same size of ptlrpc_body as client requested for * interoperability cases */ LASSERT(req->rq_reqmsg); lens[MSG_PTLRPC_BODY_OFF] = lustre_msg_buflen(req->rq_reqmsg, MSG_PTLRPC_BODY_OFF); msg_len = lustre_msg_size_v2(count, lens); size = sizeof(struct ptlrpc_reply_state) + msg_len; OBD_ALLOC(rs, size); if (unlikely(rs == NULL)) { rs = lustre_get_emerg_rs(req->rq_rqbd->rqbd_service, size); if (!rs) RETURN (-ENOMEM); } 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_service = req->rq_rqbd->rqbd_service; rs->rs_size = size; CFS_INIT_LIST_HEAD(&rs->rs_exp_list); CFS_INIT_LIST_HEAD(&rs->rs_obd_list); rs->rs_msg = (struct lustre_msg *)(rs + 1); req->rq_replen = msg_len; req->rq_reply_state = rs; req->rq_repmsg = rs->rs_msg; /* server side, no rq_repbuf */ lustre_init_msg_v2(rs->rs_msg, count, lens, bufs); lustre_msg_add_version(rs->rs_msg, PTLRPC_MSG_VERSION); lustre_set_rep_swabbed(req, MSG_PTLRPC_BODY_OFF); PTLRPC_RS_DEBUG_LRU_ADD(rs); RETURN(0); } int lustre_pack_reply_flags(struct ptlrpc_request *req, int count, __u32 *lens, char **bufs, int flags) { __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_V1: return lustre_pack_reply_v1(req, count - 1, lens + 1, bufs ? bufs + 1 : NULL, flags); case LUSTRE_MSG_MAGIC_V2: return lustre_pack_reply_v2(req, count, lens, bufs, flags); default: CERROR("incorrect message magic: %08x\n", req->rq_reqmsg->lm_magic); return -EINVAL; } } int lustre_pack_reply(struct ptlrpc_request *req, int count, __u32 *lens, char **bufs) { int rc = lustre_pack_reply_flags(req, count, lens, bufs, 0); 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; } void *lustre_msg_buf_v1(void *msg, int n, int min_size) { struct lustre_msg_v1 *m = (struct lustre_msg_v1 *)msg; int i, offset, buflen, bufcount; LASSERT(m != NULL); LASSERT(n >= 0); bufcount = m->lm_bufcount; if (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 (buflen < min_size) { CERROR("msg %p buffer[%d] size %d too small (required %d)\n", m, n, buflen, min_size); LBUG(); return NULL; } offset = lustre_msg_hdr_size_v1(bufcount); for (i = 0; i < n; i++) offset += size_round(m->lm_buflens[i]); return (char *)m + offset; } 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 (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 (buflen < min_size) { CERROR("msg %p buffer[%d] size %d too small " "(required %d, opc=%d)\n", m, n, buflen, min_size, lustre_msg_get_opc(m)); return NULL; } offset = lustre_msg_hdr_size_v2(bufcount); for (i = 0; i < n; i++) offset += 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_V1: return lustre_msg_buf_v1(m, n - 1, min_size); case LUSTRE_MSG_MAGIC_V2: return lustre_msg_buf_v2(m, n, min_size); default: CERROR("incorrect message magic: %08x\n", m->lm_magic); return NULL; } } void lustre_shrink_reply_v1(struct ptlrpc_request *req, int segment, unsigned int newlen, int move_data) { struct lustre_msg_v1 *msg = (struct lustre_msg_v1 *)req->rq_repmsg; char *tail = NULL, *newpos; int tail_len = 0, n; LASSERT(req->rq_reply_state); LASSERT(msg); LASSERT(segment >= 0); LASSERTF(msg->lm_bufcount > segment, "message have %d - requested %d\n", msg->lm_bufcount,segment); LASSERT(msg->lm_buflens[segment] >= newlen); if (msg->lm_buflens[segment] == newlen) return; if (move_data && msg->lm_bufcount > segment + 1) { tail = lustre_msg_buf_v1(msg, segment + 1, 0); for (n = segment + 1; n < msg->lm_bufcount; n++) tail_len += size_round(msg->lm_buflens[n]); } msg->lm_buflens[segment] = newlen; if (tail && tail_len) { newpos = lustre_msg_buf_v1(msg, segment + 1, 0); LASSERT(newpos <= tail); if (newpos != tail) memcpy(newpos, tail, tail_len); } if (newlen == 0 && msg->lm_bufcount > segment + 1) { memmove(&msg->lm_buflens[segment], &msg->lm_buflens[segment + 1], (msg->lm_bufcount - segment - 1) * sizeof(__u32)); msg->lm_buflens[msg->lm_bufcount - 1] = 0; } req->rq_replen = lustre_msg_size_v1(msg->lm_bufcount, msg->lm_buflens); } void lustre_shrink_reply_v2(struct ptlrpc_request *req, int segment, unsigned int newlen, int move_data) { struct lustre_msg_v2 *msg = req->rq_repmsg; char *tail = NULL, *newpos; int tail_len = 0, n; CDEBUG(D_INFO, "shrink req %p seg %d - len %d\n", req, segment, newlen); LASSERT(req->rq_reply_state); LASSERT(msg); LASSERTF(msg->lm_bufcount > segment, "message have %d - requested %d\n", msg->lm_bufcount,segment); LASSERT(msg->lm_buflens[segment] >= newlen); if (msg->lm_buflens[segment] == newlen) return; 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 += 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); } if (newlen == 0 && msg->lm_bufcount > segment + 1) { memmove(&msg->lm_buflens[segment], &msg->lm_buflens[segment + 1], (msg->lm_bufcount - segment - 1) * sizeof(__u32)); msg->lm_buflens[msg->lm_bufcount - 1] = 0; } req->rq_replen = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens); } /* * 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. * * 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. */ void lustre_shrink_reply(struct ptlrpc_request *req, int segment, unsigned int newlen, int move_data) { switch (req->rq_repmsg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: lustre_shrink_reply_v1(req, segment - 1, newlen, move_data); return; case LUSTRE_MSG_MAGIC_V2: lustre_shrink_reply_v2(req, segment, newlen, move_data); return; default: LASSERTF(0, "incorrect message magic: %08x\n", req->rq_repmsg->lm_magic); } } 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)); if (unlikely(rs->rs_prealloc)) { struct ptlrpc_service *svc = rs->rs_service; spin_lock(&svc->srv_lock); list_add(&rs->rs_list, &svc->srv_free_rs_list); spin_unlock(&svc->srv_lock); cfs_waitq_signal(&svc->srv_free_rs_waitq); } else { OBD_FREE(rs, rs->rs_size); } } int lustre_unpack_msg_v1(void *msg, int len) { struct lustre_msg_v1 *m = (struct lustre_msg_v1 *)msg; int flipped, required_len, i; ENTRY; /* Now we know the sender speaks my language. */ required_len = lustre_msg_hdr_size_v1(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); } flipped = m->lm_magic == LUSTRE_MSG_MAGIC_V1_SWABBED; if (flipped) { __swab32s(&m->lm_magic); __swab32s(&m->lm_type); __swab32s(&m->lm_version); __swab32s(&m->lm_opc); __swab64s(&m->lm_last_xid); __swab64s(&m->lm_last_committed); __swab64s(&m->lm_transno); __swab32s(&m->lm_status); __swab32s(&m->lm_flags); __swab32s(&m->lm_conn_cnt); __swab32s(&m->lm_bufcount); } if (m->lm_version != PTLRPC_MSG_VERSION) { CERROR("wrong lustre_msg version %08x\n", m->lm_version); RETURN(-EINVAL); } required_len = lustre_msg_hdr_size_v1(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 (flipped) __swab32s (&m->lm_buflens[i]); required_len += 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(0); } static int lustre_unpack_msg_v2(struct lustre_msg_v2 *m, int len) { int flipped, 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); } flipped = m->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED; if (flipped) { __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 (flipped) __swab32s(&m->lm_buflens[i]); required_len += 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 0; } /* * return 1 if some endianness conversions are needed for the req buffers, * 0 if not neeed, or * -EINVAL if message has wrong magic */ int lustre_unpack_msg(struct lustre_msg *m, int len) { int required_len, rc; int swab_needed; ENTRY; /* 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); } swab_needed = lustre_msg_need_swab(m); switch (m->lm_magic) { case LUSTRE_MSG_MAGIC_V1: case LUSTRE_MSG_MAGIC_V1_SWABBED: rc = lustre_unpack_msg_v1(m, len); break; case LUSTRE_MSG_MAGIC_V2: case LUSTRE_MSG_MAGIC_V2_SWABBED: rc = lustre_unpack_msg_v2(m, len); break; default: CERROR("incorrect message magic: %08x\n", m->lm_magic); return -EINVAL; } if (!rc) rc = swab_needed; RETURN(rc); } static inline int lustre_unpack_ptlrpc_body_v2(struct lustre_msg_v2 *m, int offset, int swab_needed) { struct ptlrpc_body *pb; pb = lustre_msg_buf_v2(m, offset, PTLRPC_BODY_MIN_SIZE); if (!pb) { CERROR("error unpacking ptlrpc body\n"); return -EFAULT; } if (swab_needed) lustre_swab_ptlrpc_body(pb, lustre_msg_buflen(m, offset)); if ((pb->pb_version & ~LUSTRE_VERSION_MASK) != PTLRPC_MSG_VERSION) { CERROR("wrong lustre_msg version %08x\n", pb->pb_version); return -EINVAL; } return 0; } int lustre_unpack_msg_ptlrpc_body(struct lustre_msg *msg, int offset, int swab_needed) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 0; case LUSTRE_MSG_MAGIC_V2: return lustre_unpack_ptlrpc_body_v2(msg, offset, swab_needed); default: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return -EINVAL; } } int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset) { switch (req->rq_reqmsg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 0; case LUSTRE_MSG_MAGIC_V2: { int swab_needed = ptlrpc_reqbuf_need_swab(req, offset); lustre_set_req_swabbed(req, offset); return lustre_unpack_ptlrpc_body_v2(req->rq_reqmsg, offset, swab_needed); } default: CERROR("incorrect message 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_V1: return 0; case LUSTRE_MSG_MAGIC_V2:{ int swab_needed = ptlrpc_repbuf_need_swab(req, offset); lustre_set_rep_swabbed(req, offset); return lustre_unpack_ptlrpc_body_v2(req->rq_repmsg, offset, swab_needed); } default: CERROR("incorrect message magic: %08x\n", req->rq_repmsg->lm_magic); return -EINVAL; } } static inline int lustre_msg_buflen_v1(void *msg, int n) { struct lustre_msg_v1 *m = (struct lustre_msg_v1 *)msg; LASSERT(n >= 0); if (n >= m->lm_bufcount) return 0; return m->lm_buflens[n]; } 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 @n in message @m * @m - lustre_msg (request or reply) to look at * @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_V1: return lustre_msg_buflen_v1(m, n - 1); 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_v1(void *msg, int n, int len) { struct lustre_msg_v1 *m = (struct lustre_msg_v1 *)msg; LASSERT(n >= 0); if (n >= m->lm_bufcount) LBUG(); m->lm_buflens[n] = len; } 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_V1: lustre_msg_set_buflen_v1(m, n - 1, len); return; 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_V1: return ((struct lustre_msg_v1 *)m)->lm_bufcount + 1; 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_V1: str = lustre_msg_buf_v1(m, index - 1, 0); blen = lustre_msg_buflen_v1(m, index - 1); break; 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; } /* Wrap up the normal fixed length cases */ 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_V1: ptr = lustre_msg_buf_v1(msg, index - 1, min_size); break; 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 == NULL) return NULL; if (swabber != NULL) { CDEBUG(D_NET, "Swab buffer %d\n", index); ((void (*)(void *))swabber)(ptr); } return ptr; } void *lustre_swab_reqbuf(struct ptlrpc_request *req, int index, int min_size, void *swabber) { if (lustre_req_swabbed(req, index)) return lustre_msg_buf(req->rq_reqmsg, index, min_size); if (!lustre_req_need_swab(req)) swabber = NULL; lustre_set_req_swabbed(req, index); return lustre_swab_buf(req->rq_reqmsg, index, min_size, swabber); } void *lustre_swab_repbuf(struct ptlrpc_request *req, int index, int min_size, void *swabber) { if (lustre_rep_swabbed(req, index)) return lustre_msg_buf(req->rq_repmsg, index, min_size); if (!lustre_rep_need_swab(req)) swabber = NULL; lustre_set_rep_swabbed(req, index); return lustre_swab_buf(req->rq_repmsg, index, min_size, swabber); } static inline struct ptlrpc_body *lustre_msg_ptlrpc_body(struct lustre_msg *msg) { return lustre_msg_buf_v2(msg, MSG_PTLRPC_BODY_OFF, PTLRPC_BODY_MIN_SIZE); } __u32 lustre_msghdr_get_flags(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: 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; } } 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_V1: return ((struct lustre_msg_v1 *)msg)->lm_flags & MSG_GEN_FLAG_MASK; 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: CERROR("incorrect message magic: %08x\n", msg->lm_magic); /* flags might be printed in debug code while message * uninitialized */ return 0; } } void lustre_msg_add_flags(struct lustre_msg *msg, int flags) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_flags |= MSG_GEN_FLAG_MASK & flags; 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_flags |= flags; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_flags(struct lustre_msg *msg, int flags) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_flags &= ~MSG_GEN_FLAG_MASK; ((struct lustre_msg_v1 *)msg)->lm_flags |= MSG_GEN_FLAG_MASK & flags; 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_flags = flags; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_clear_flags(struct lustre_msg *msg, int flags) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_flags &= ~(MSG_GEN_FLAG_MASK & flags); 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_flags &= ~(MSG_GEN_FLAG_MASK & flags); return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } __u32 lustre_msg_get_op_flags(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_flags >> MSG_OP_FLAG_SHIFT; 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: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return 0; } } void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_flags |= (flags & MSG_GEN_FLAG_MASK) << MSG_OP_FLAG_SHIFT; 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_op_flags |= flags; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_flags &= ~MSG_OP_FLAG_MASK; ((struct lustre_msg_v1 *)msg)->lm_flags |= ((flags & MSG_GEN_FLAG_MASK) <pb_op_flags |= flags; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return &((struct lustre_msg_v1 *)msg)->lm_handle; 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; } } __u32 lustre_msg_get_type(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_type; 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; } } __u32 lustre_msg_get_version(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_version; 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; } } void lustre_msg_add_version(struct lustre_msg *msg, int version) { 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_version |= version; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } __u32 lustre_msg_get_opc(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_opc; 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\n", msg->lm_magic); return 0; } } __u64 lustre_msg_get_last_xid(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_last_xid; 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; } } __u64 lustre_msg_get_last_committed(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_last_committed; 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; } } __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 0; } #ifdef PTLRPC_INTEROP_1_6 if (lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF) < sizeof (*pb)) return NULL; #endif return pb->pb_pre_versions; } default: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return NULL; } } __u64 lustre_msg_get_transno(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_transno; 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; } } int lustre_msg_get_status(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_status; 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: CERROR("incorrect message magic: %08x\n", msg->lm_magic); /* status might be printed in debug code while message * uninitialized */ return -EINVAL; } } __u64 lustre_msg_get_slv(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 1; 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("incorrect message magic: %08x\n", msg->lm_magic); return -EINVAL; } } void lustre_msg_set_slv(struct lustre_msg *msg, __u64 slv) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return; 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("incorrect message magic: %08x\n", msg->lm_magic); return; } } __u32 lustre_msg_get_limit(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 1; 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("incorrect message magic: %08x\n", msg->lm_magic); return -EINVAL; } } void lustre_msg_set_limit(struct lustre_msg *msg, __u64 limit) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return; 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("incorrect message magic: %08x\n", msg->lm_magic); return; } } __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return ((struct lustre_msg_v1 *)msg)->lm_conn_cnt; 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; } } 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; } } __u32 lustre_msg_get_magic(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: case LUSTRE_MSG_MAGIC_V1_SWABBED: case LUSTRE_MSG_MAGIC_V2: case LUSTRE_MSG_MAGIC_V2_SWABBED: return msg->lm_magic; default: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return 0; } } __u32 lustre_msg_get_timeout(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: 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: 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; } } __u32 lustre_msg_get_cksum(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 0; case LUSTRE_MSG_MAGIC_V2: return msg->lm_cksum; default: CERROR("incorrect message magic: %08x\n", msg->lm_magic); return 0; } } /* * the sizeof ptlrpc_body in 1.6 is 88 bytes (64 bytes shorter than current * size), to be able to interoperate with 1.6 we only calculate checksum * aginst first 88 bytes of ptlrpc_body. */ static const int ptlrpc_body_size_16 = 88; __u32 lustre_msg_calc_cksum(struct lustre_msg *msg) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: return 0; case LUSTRE_MSG_MAGIC_V2: { struct ptlrpc_body *pb = lustre_msg_ptlrpc_body(msg); LASSERTF(pb, "invalid msg %p: no ptlrpc body!\n", msg); return crc32_le(~(__u32)0, (unsigned char *)pb, ptlrpc_body_size_16); } 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_V1: ((struct lustre_msg_v1 *)msg)->lm_handle = *handle; 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_handle = *handle; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_type(struct lustre_msg *msg, __u32 type) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_type = type; 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_type = type; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_opc = opc; 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_opc = opc; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_last_xid = last_xid; 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_last_xid = last_xid; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_last_committed(struct lustre_msg *msg, __u64 last_committed) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_last_committed=last_committed; 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_last_committed = last_committed; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } 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); #ifdef PTLRPC_INTEROP_1_6 /* do nothing for old clients */ if (lustre_msg_buflen(msg, MSG_PTLRPC_BODY_OFF) < sizeof (*pb)) return; #endif 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); } } void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_transno = transno; 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_transno = transno; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_status(struct lustre_msg *msg, __u32 status) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_status = status; 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_status = status; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt) { switch (msg->lm_magic) { case LUSTRE_MSG_MAGIC_V1: ((struct lustre_msg_v1 *)msg)->lm_conn_cnt = conn_cnt; 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_conn_cnt = conn_cnt; return; } default: LASSERTF(0, "incorrect message magic: %08x\n", msg->lm_magic); } } 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_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); } } /* byte flipping routines for all wire types declared in * lustre_idl.h implemented here. */ void lustre_swab_ptlrpc_body(struct ptlrpc_body *b, int msgsize) { __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); __swab64s (&b->pb_slv); __swab32s (&b->pb_limit); if (msgsize < offsetof(struct ptlrpc_body, pb_pre_versions[4])) return; __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); } void lustre_swab_connect(struct obd_connect_data *ocd) { __swab64s(&ocd->ocd_connect_flags); __swab32s(&ocd->ocd_version); __swab32s(&ocd->ocd_grant); __swab32s(&ocd->ocd_index); __swab32s(&ocd->ocd_brw_size); __swab64s(&ocd->ocd_ibits_known); __swab32s(&ocd->ocd_nllu); __swab32s(&ocd->ocd_nllg); __swab64s(&ocd->ocd_transno); __swab32s(&ocd->ocd_group); __swab32s(&ocd->ocd_cksum_types); CLASSERT(offsetof(typeof(*ocd), padding1) != 0); CLASSERT(offsetof(typeof(*ocd), padding2) != 0); } void lustre_swab_obdo (struct obdo *o) { __swab64s (&o->o_valid); __swab64s (&o->o_id); __swab64s (&o->o_gr); __swab64s (&o->o_fid); __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_generation); __swab32s (&o->o_misc); __swab32s (&o->o_easize); __swab32s (&o->o_mds); __swab32s (&o->o_stripe_idx); __swab32s (&o->o_padding_1); /* o_inline is opaque */ } 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); /* no need to swap os_spare */ } void lustre_swab_obd_ioobj (struct obd_ioobj *ioo) { __swab64s (&ioo->ioo_id); __swab64s (&ioo->ioo_gr); __swab32s (&ioo->ioo_type); __swab32s (&ioo->ioo_bufcnt); } void lustre_swab_niobuf_remote (struct niobuf_remote *nbr) { __swab64s (&nbr->offset); __swab32s (&nbr->len); __swab32s (&nbr->flags); } void lustre_swab_ost_body (struct ost_body *b) { lustre_swab_obdo (&b->oa); } void lustre_swab_ost_last_id(obd_id *id) { __swab64s(id); } 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); } void lustre_swab_mds_status_req (struct mds_status_req *r) { __swab32s (&r->flags); __swab32s (&r->repbuf); } void lustre_swab_mds_body (struct mds_body *b) { lustre_swab_ll_fid (&b->fid1); lustre_swab_ll_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->io_epoch); __swab64s (&b->ino); __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); __swab32s (&b->generation); __swab32s (&b->suppgid); __swab32s (&b->eadatasize); __swab32s (&b->aclsize); __swab32s (&b->max_mdsize); __swab32s (&b->max_cookiesize); __swab32s (&b->padding_4); } 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_nid_count); CLASSERT(sizeof(lnet_nid_t) == sizeof(__u64)); for (i = 0; i < MTI_NIDS_MAX; i++) __swab64s(&mti->mti_nids[i]); } 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), 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); } void lustre_swab_quota_adjust_qunit (struct quota_adjust_qunit *q) { __swab32s (&q->qaq_flags); __swab32s (&q->qaq_id); __swab64s (&q->qaq_bunit_sz); __swab64s (&q->qaq_iunit_sz); } void lustre_swab_mds_rec_setattr (struct mds_rec_setattr *sa) { __swab32s (&sa->sa_opcode); __swab32s (&sa->sa_fsuid); __swab32s (&sa->sa_fsgid); __swab32s (&sa->sa_cap); __swab32s (&sa->sa_suppgid); __swab32s (&sa->sa_mode); lustre_swab_ll_fid (&sa->sa_fid); __swab64s (&sa->sa_valid); __swab64s (&sa->sa_size); __swab64s (&sa->sa_mtime); __swab64s (&sa->sa_atime); __swab64s (&sa->sa_ctime); __swab32s (&sa->sa_uid); __swab32s (&sa->sa_gid); __swab32s (&sa->sa_attr_flags); CLASSERT(offsetof(typeof(*sa), sa_padding) != 0); } void lustre_swab_mds_rec_join (struct mds_rec_join *jr) { __swab64s(&jr->jr_headsize); lustre_swab_ll_fid(&jr->jr_fid); } void lustre_swab_mds_rec_create (struct mds_rec_create *cr) { __swab32s (&cr->cr_opcode); __swab32s (&cr->cr_fsuid); __swab32s (&cr->cr_fsgid); __swab32s (&cr->cr_cap); __swab32s (&cr->cr_flags); /* for use with open */ __swab32s (&cr->cr_mode); lustre_swab_ll_fid (&cr->cr_fid); lustre_swab_ll_fid (&cr->cr_replayfid); __swab64s (&cr->cr_time); __swab64s (&cr->cr_rdev); __swab32s (&cr->cr_suppgid); CLASSERT(offsetof(typeof(*cr), cr_padding_1) != 0); CLASSERT(offsetof(typeof(*cr), cr_padding_2) != 0); CLASSERT(offsetof(typeof(*cr), cr_padding_3) != 0); CLASSERT(offsetof(typeof(*cr), cr_padding_4) != 0); CLASSERT(offsetof(typeof(*cr), cr_padding_5) != 0); } void lustre_swab_mds_rec_link (struct mds_rec_link *lk) { __swab32s (&lk->lk_opcode); __swab32s (&lk->lk_fsuid); __swab32s (&lk->lk_fsgid); __swab32s (&lk->lk_cap); __swab32s (&lk->lk_suppgid1); __swab32s (&lk->lk_suppgid2); lustre_swab_ll_fid (&lk->lk_fid1); lustre_swab_ll_fid (&lk->lk_fid2); __swab64s (&lk->lk_time); CLASSERT(offsetof(typeof(*lk), lk_padding_1) != 0); CLASSERT(offsetof(typeof(*lk), lk_padding_2) != 0); CLASSERT(offsetof(typeof(*lk), lk_padding_3) != 0); CLASSERT(offsetof(typeof(*lk), lk_padding_4) != 0); } void lustre_swab_mds_rec_unlink (struct mds_rec_unlink *ul) { __swab32s (&ul->ul_opcode); __swab32s (&ul->ul_fsuid); __swab32s (&ul->ul_fsgid); __swab32s (&ul->ul_cap); __swab32s (&ul->ul_suppgid); __swab32s (&ul->ul_mode); lustre_swab_ll_fid (&ul->ul_fid1); lustre_swab_ll_fid (&ul->ul_fid2); __swab64s (&ul->ul_time); CLASSERT(offsetof(typeof(*ul), ul_padding_1) != 0); CLASSERT(offsetof(typeof(*ul), ul_padding_2) != 0); CLASSERT(offsetof(typeof(*ul), ul_padding_3) != 0); CLASSERT(offsetof(typeof(*ul), ul_padding_4) != 0); } 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]); } void lustre_swab_mds_rec_rename (struct mds_rec_rename *rn) { __swab32s (&rn->rn_opcode); __swab32s (&rn->rn_fsuid); __swab32s (&rn->rn_fsgid); __swab32s (&rn->rn_cap); __swab32s (&rn->rn_suppgid1); __swab32s (&rn->rn_suppgid2); lustre_swab_ll_fid (&rn->rn_fid1); lustre_swab_ll_fid (&rn->rn_fid2); __swab64s (&rn->rn_time); CLASSERT(offsetof(typeof(*rn), rn_padding_1) != 0); CLASSERT(offsetof(typeof(*rn), rn_padding_2) != 0); CLASSERT(offsetof(typeof(*rn), rn_padding_3) != 0); CLASSERT(offsetof(typeof(*rn), rn_padding_4) != 0); } 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 */ } static void lustre_swab_lov_user_md_common(struct lov_user_md_v1 *lum) { ENTRY; __swab32s(&lum->lmm_magic); __swab32s(&lum->lmm_pattern); __swab64s(&lum->lmm_object_id); __swab64s(&lum->lmm_object_gr); __swab32s(&lum->lmm_stripe_size); __swab16s(&lum->lmm_stripe_count); __swab16s(&lum->lmm_stripe_offset); EXIT; } static void lustre_swab_lov_user_md_v1(struct lov_user_md_v1 *lum) { ENTRY; CDEBUG(D_IOCTL, "swabbing lov_user_md v1\n"); lustre_swab_lov_user_md_common(lum); EXIT; } static void lustre_swab_lov_user_md_v3(struct lov_user_md_v3 *lum) { ENTRY; 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 */ EXIT; } int lustre_swab_lov_user_md(struct lov_user_md_v1 *lum) { ENTRY; switch (lum->lmm_magic) { case LOV_USER_MAGIC_V1: case LOV_USER_MAGIC_V1_SWABBED: lustre_swab_lov_user_md_v1(lum); break; case LOV_USER_MAGIC_V3: case LOV_USER_MAGIC_V3_SWABBED: lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lum); break; default: CDEBUG(D_IOCTL, "bad userland LOV MAGIC:" " %#08x != %#08x nor %#08x\n", lum->lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3); RETURN(-EINVAL); } RETURN(0); } void lustre_swab_lov_mds_md(struct lov_mds_md *lmm) { ENTRY; CDEBUG(D_IOCTL, "swabbing lov_mds_md\n"); __swab32s(&lmm->lmm_magic); __swab32s(&lmm->lmm_pattern); __swab64s(&lmm->lmm_object_id); __swab64s(&lmm->lmm_object_gr); __swab32s(&lmm->lmm_stripe_size); __swab32s(&lmm->lmm_stripe_count); EXIT; } void lustre_swab_lov_user_md_join(struct lov_user_md_join *lumj) { ENTRY; CDEBUG(D_IOCTL, "swabbing lov_user_md_join\n"); __swab32s(&lumj->lmm_magic); __swab32s(&lumj->lmm_pattern); __swab64s(&lumj->lmm_object_id); __swab64s(&lumj->lmm_object_gr); __swab32s(&lumj->lmm_stripe_size); __swab32s(&lumj->lmm_stripe_count); __swab32s(&lumj->lmm_extent_count); EXIT; } int lustre_swab_lov_user_md_objects(struct lov_user_md *lum) { int i; __u16 stripe_count = lum->lmm_stripe_count; struct lov_user_ost_data *lod; ENTRY; switch (lum->lmm_magic) { case LOV_USER_MAGIC_V1_SWABBED: __swab16s(&stripe_count); case LOV_USER_MAGIC_V1: lod = lum->lmm_objects; break; case LOV_USER_MAGIC_V3_SWABBED: __swab16s(&stripe_count); case LOV_USER_MAGIC_V3: lod = ((struct lov_user_md_v3 *)lum)->lmm_objects; break; default: CDEBUG(D_IOCTL, "bad userland LOV MAGIC:" " %#08x != %#08x nor %#08x\n", lum->lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3); RETURN(-EINVAL); } for (i = 0; i < stripe_count; i++) { __swab64s(&(lod[i].l_object_id)); __swab64s(&(lod[i].l_object_gr)); __swab32s(&(lod[i].l_ost_gen)); __swab32s(&(lod[i].l_ost_idx)); } RETURN(0); } 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]); } void lustre_swab_ldlm_policy_data (ldlm_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); __swab32s(&d->l_flock.pid); } void lustre_swab_ldlm_intent (struct ldlm_intent *i) { __swab64s (&i->opc); } 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); } 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); } 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 */ } 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); } /* no one calls this */ int llog_log_swabbed(struct llog_log_hdr *hdr) { if (hdr->llh_hdr.lrh_type == __swab32(LLOG_HDR_MAGIC)) return 1; if (hdr->llh_hdr.lrh_type == LLOG_HDR_MAGIC) return 0; return -1; } void lustre_swab_qdata(struct qunit_data *d) { __swab32s (&d->qd_id); __swab32s (&d->qd_flags); __swab64s (&d->qd_count); __swab64s (&d->qd_qunit); } #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) void lustre_swab_qdata_old2(struct qunit_data_old2 *d) { __swab32s (&d->qd_id); __swab32s (&d->qd_flags); __swab64s (&d->qd_count); } #else #warning "remove quota code above for format absolete in new release" #endif #ifdef __KERNEL__ #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) void qdata_v2_to_v3(struct qunit_data_old2 *d, struct qunit_data *qdata) { LASSERT(d); LASSERT(qdata); qdata->qd_id = d->qd_id; qdata->qd_flags = d->qd_flags; qdata->qd_count = d->qd_count; } struct qunit_data_old2 *qdata_v3_to_v2(struct qunit_data *d) { struct qunit_data tmp; struct qunit_data_old2 *ret; ENTRY; if (!d) return NULL; tmp = *d; ret = (struct qunit_data_old2 *)d; ret->qd_id = tmp.qd_id; ret->qd_flags = tmp.qd_flags & LQUOTA_QUNIT_FLAGS; ret->qd_count = tmp.qd_count; RETURN(ret); } #else #warning "remove quota code above for format absolete in new release" #endif /* got qdata from request(req/rep) */ int quota_get_qdata(void *request, struct qunit_data *qdata, int is_req, int is_exp) { struct ptlrpc_request *req = (struct ptlrpc_request *)request; struct qunit_data *new; struct qunit_data_old2 *old2; int size2 = sizeof(struct qunit_data_old2); __u64 flags = is_exp ? req->rq_export->exp_connect_flags : req->rq_import->imp_connect_data.ocd_connect_flags; int rc = 0; LASSERT(req); LASSERT(qdata); #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_WITHOUT_CHANGE_QS)) goto without_change_qs; #else #warning "remove quota code above for format absolete in new release" #endif /* support for quota64 and change_qs */ if (flags & OBD_CONNECT_CHANGE_QS) { if (!(flags & OBD_CONNECT_QUOTA64)) { CDEBUG(D_ERROR, "Wire protocol for qunit is broken!\n"); return -EINVAL; } if (is_req == QUOTA_REQUEST) new = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(struct qunit_data), lustre_swab_qdata); else new = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(struct qunit_data), lustre_swab_qdata); if (new == NULL) GOTO(out, rc = -EPROTO); *qdata = *new; QDATA_SET_CHANGE_QS(qdata); return 0; } else { QDATA_CLR_CHANGE_QS(qdata); } #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) without_change_qs: /* only support for quota64 */ if (flags & OBD_CONNECT_QUOTA64) { if (is_req == QUOTA_REQUEST) old2 = lustre_swab_reqbuf(req, REQ_REC_OFF, size2, lustre_swab_qdata_old2); else old2 = lustre_swab_repbuf(req, REPLY_REC_OFF, size2, lustre_swab_qdata_old2); if (old2 == NULL) GOTO(out, rc = -EPROTO); qdata_v2_to_v3(old2, qdata); return 0; } #else #warning "remove quota code above for format absolete in new release" #endif out: return rc; } EXPORT_SYMBOL(quota_get_qdata); /* copy qdata to request(req/rep) */ int quota_copy_qdata(void *request, struct qunit_data *qdata, int is_req, int is_exp) { struct ptlrpc_request *req = (struct ptlrpc_request *)request; void *target; struct qunit_data_old2 *old2; __u64 flags = is_exp ? req->rq_export->exp_connect_flags : req->rq_import->imp_connect_data.ocd_connect_flags; int rc = 0; LASSERT(req); LASSERT(qdata); #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) if (OBD_FAIL_CHECK(OBD_FAIL_QUOTA_WITHOUT_CHANGE_QS)) goto without_change_qs; #else #warning "remove quota code above for format absolete in new release" #endif /* support for quota64 and change_qs */ if (flags & OBD_CONNECT_CHANGE_QS) { if (!(flags & OBD_CONNECT_QUOTA64)) { CERROR("Wire protocol for qunit is broken!\n"); return -EINVAL; } if (is_req == QUOTA_REQUEST) target = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(struct qunit_data)); else target = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(struct qunit_data)); if (!target) GOTO(out, rc = -EPROTO); memcpy(target, qdata, sizeof(*qdata)); return 0; } #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(1, 9, 0, 0) without_change_qs: /* only support for quota64 */ if (flags & OBD_CONNECT_QUOTA64) { if (is_req == QUOTA_REQUEST) target = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(struct qunit_data_old2)); else target = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(struct qunit_data_old2)); if (!target) GOTO(out, rc = -EPROTO); old2 = qdata_v3_to_v2(qdata); memcpy(target, old2, sizeof(*old2)); return 0; } #else #warning "remove quota code above for format absolete in new release" #endif out: return rc; } EXPORT_SYMBOL(quota_copy_qdata); int quota_get_qunit_data_size(__u64 flag) { int size; if (flag & OBD_CONNECT_CHANGE_QS) size = sizeof(struct qunit_data); else size = sizeof(struct qunit_data_old2); return(size); } EXPORT_SYMBOL(quota_get_qunit_data_size); #endif /* __KERNEL__ */ 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_V1: return 1; case LUSTRE_MSG_MAGIC_V2: return lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF); default: CERROR("incorrect message 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_V1: return 1; case LUSTRE_MSG_MAGIC_V2: return lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF); default: CERROR("incorrect message magic: %08x\n", req->rq_repmsg->lm_magic); return 0; } } void _debug_req(struct ptlrpc_request *req, __u32 mask, struct libcfs_debug_msg_data *data, const char *fmt, ... ) { va_list args; int opc = -1; int req_fl = 0; int rep_fl = 0; int rep_status = 0; /* Caller is responsible holding a reference on the request */ LASSERT(req && atomic_read(&req->rq_refcount) > 0); if (req->rq_reqmsg && (!lustre_msg_need_swab(req->rq_reqmsg) || (lustre_req_need_swab(req) && lustre_req_swabbed(req, MSG_PTLRPC_BODY_OFF)))) { opc = lustre_msg_get_opc(req->rq_reqmsg); req_fl = lustre_msg_get_flags(req->rq_reqmsg); } if (req->rq_repmsg && (!lustre_msg_need_swab(req->rq_repmsg) || (lustre_rep_need_swab(req) && lustre_rep_swabbed(req, MSG_PTLRPC_BODY_OFF)))) { rep_fl = lustre_msg_get_flags(req->rq_repmsg); rep_status = lustre_msg_get_status(req->rq_repmsg); } va_start(args, fmt); libcfs_debug_vmsg2(data->msg_cdls, data->msg_subsys, mask, data->msg_file, data->msg_fn, data->msg_line, fmt, args, " req@%p x"LPU64"/t"LPD64" o%d->%s@%s:%d/%d lens %d/%d e %d " "to %d dl %ld ref %d fl "REQ_FLAGS_FMT"/%x/%x rc %d/%d\n", req, req->rq_xid, req->rq_transno, opc, req->rq_import ? obd2cli_tgt(req->rq_import->imp_obd) : req->rq_export ? (char*)req->rq_export->exp_client_uuid.uuid : "", req->rq_import ? (char *)req->rq_import->imp_connection->c_remote_uuid.uuid : req->rq_export ? (char *)req->rq_export->exp_connection->c_remote_uuid.uuid : "", req->rq_request_portal, req->rq_reply_portal, req->rq_reqlen, req->rq_replen, req->rq_early_count, !!req->rq_timeout, req->rq_deadline, atomic_read(&req->rq_refcount), DEBUG_REQ_FLAGS(req), req_fl, rep_fl, req->rq_status, rep_status); va_end(args); } EXPORT_SYMBOL(_debug_req);