diff options
Diffstat (limited to 'fs/dlm/rcom.c')
-rw-r--r-- | fs/dlm/rcom.c | 246 |
1 files changed, 141 insertions, 105 deletions
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index e3d9f72c640d..f19860315043 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -27,46 +27,77 @@ static int rcom_response(struct dlm_ls *ls) return test_bit(LSFL_RCOM_READY, &ls->ls_flags); } +static void _create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, + struct dlm_rcom **rc_ret, char *mb, int mb_len) +{ + struct dlm_rcom *rc; + + rc = (struct dlm_rcom *) mb; + + rc->rc_header.h_version = cpu_to_le32(DLM_HEADER_MAJOR | DLM_HEADER_MINOR); + rc->rc_header.u.h_lockspace = cpu_to_le32(ls->ls_global_id); + rc->rc_header.h_nodeid = cpu_to_le32(dlm_our_nodeid()); + rc->rc_header.h_length = cpu_to_le16(mb_len); + rc->rc_header.h_cmd = DLM_RCOM; + + rc->rc_type = cpu_to_le32(type); + + spin_lock(&ls->ls_recover_lock); + rc->rc_seq = cpu_to_le64(ls->ls_recover_seq); + spin_unlock(&ls->ls_recover_lock); + + *rc_ret = rc; +} + static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, struct dlm_rcom **rc_ret, struct dlm_mhandle **mh_ret) { - struct dlm_rcom *rc; + int mb_len = sizeof(struct dlm_rcom) + len; struct dlm_mhandle *mh; char *mb; - int mb_len = sizeof(struct dlm_rcom) + len; - mh = dlm_lowcomms_get_buffer(to_nodeid, mb_len, GFP_NOFS, &mb); + mh = dlm_midcomms_get_mhandle(to_nodeid, mb_len, GFP_NOFS, &mb); if (!mh) { - log_print("create_rcom to %d type %d len %d ENOBUFS", - to_nodeid, type, len); + log_print("%s to %d type %d len %d ENOBUFS", + __func__, to_nodeid, type, len); return -ENOBUFS; } - memset(mb, 0, mb_len); - rc = (struct dlm_rcom *) mb; - - rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR); - rc->rc_header.h_lockspace = ls->ls_global_id; - rc->rc_header.h_nodeid = dlm_our_nodeid(); - rc->rc_header.h_length = mb_len; - rc->rc_header.h_cmd = DLM_RCOM; + _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len); + *mh_ret = mh; + return 0; +} - rc->rc_type = type; +static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type, + int len, struct dlm_rcom **rc_ret, + struct dlm_msg **msg_ret) +{ + int mb_len = sizeof(struct dlm_rcom) + len; + struct dlm_msg *msg; + char *mb; - spin_lock(&ls->ls_recover_lock); - rc->rc_seq = ls->ls_recover_seq; - spin_unlock(&ls->ls_recover_lock); + msg = dlm_lowcomms_new_msg(to_nodeid, mb_len, GFP_NOFS, &mb, + NULL, NULL); + if (!msg) { + log_print("create_rcom to %d type %d len %d ENOBUFS", + to_nodeid, type, len); + return -ENOBUFS; + } - *mh_ret = mh; - *rc_ret = rc; + _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len); + *msg_ret = msg; return 0; } -static void send_rcom(struct dlm_ls *ls, struct dlm_mhandle *mh, - struct dlm_rcom *rc) +static void send_rcom(struct dlm_mhandle *mh, struct dlm_rcom *rc) +{ + dlm_midcomms_commit_mhandle(mh); +} + +static void send_rcom_stateless(struct dlm_msg *msg, struct dlm_rcom *rc) { - dlm_rcom_out(rc); - dlm_lowcomms_commit_buffer(mh); + dlm_lowcomms_commit_msg(msg); + dlm_lowcomms_put_msg(msg); } static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs, @@ -94,10 +125,10 @@ static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) { struct rcom_config *rf = (struct rcom_config *) rc->rc_buf; - if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) { + if ((le32_to_cpu(rc->rc_header.h_version) & 0xFFFF0000) != DLM_HEADER_MAJOR) { log_error(ls, "version mismatch: %x nodeid %d: %x", DLM_HEADER_MAJOR | DLM_HEADER_MINOR, nodeid, - rc->rc_header.h_version); + le32_to_cpu(rc->rc_header.h_version)); return -EPROTO; } @@ -112,10 +143,10 @@ static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) return 0; } -static void allow_sync_reply(struct dlm_ls *ls, uint64_t *new_seq) +static void allow_sync_reply(struct dlm_ls *ls, __le64 *new_seq) { spin_lock(&ls->ls_rcom_spin); - *new_seq = ++ls->ls_rcom_seq; + *new_seq = cpu_to_le64(++ls->ls_rcom_seq); set_bit(LSFL_RCOM_WAIT, &ls->ls_flags); spin_unlock(&ls->ls_rcom_spin); } @@ -142,29 +173,29 @@ static void disallow_sync_reply(struct dlm_ls *ls) int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags) { struct dlm_rcom *rc; - struct dlm_mhandle *mh; + struct dlm_msg *msg; int error = 0; ls->ls_recover_nodeid = nodeid; if (nodeid == dlm_our_nodeid()) { rc = ls->ls_recover_buf; - rc->rc_result = dlm_recover_status(ls); + rc->rc_result = cpu_to_le32(dlm_recover_status(ls)); goto out; } retry: - error = create_rcom(ls, nodeid, DLM_RCOM_STATUS, - sizeof(struct rcom_status), &rc, &mh); + error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS, + sizeof(struct rcom_status), &rc, &msg); if (error) goto out; set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags); allow_sync_reply(ls, &rc->rc_id); - memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size); + memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE); - send_rcom(ls, mh, rc); + send_rcom_stateless(msg, rc); error = dlm_wait_function(ls, &rcom_response); disallow_sync_reply(ls); @@ -175,7 +206,7 @@ retry: rc = ls->ls_recover_buf; - if (rc->rc_result == -ESRCH) { + if (rc->rc_result == cpu_to_le32(-ESRCH)) { /* we pretend the remote lockspace exists with 0 status */ log_debug(ls, "remote node %d not ready", nodeid); rc->rc_result = 0; @@ -192,11 +223,11 @@ retry: static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) { struct dlm_rcom *rc; - struct dlm_mhandle *mh; struct rcom_status *rs; uint32_t status; - int nodeid = rc_in->rc_header.h_nodeid; + int nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); int len = sizeof(struct rcom_config); + struct dlm_msg *msg; int num_slots = 0; int error; @@ -219,14 +250,14 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) len += num_slots * sizeof(struct rcom_slot); do_create: - error = create_rcom(ls, nodeid, DLM_RCOM_STATUS_REPLY, - len, &rc, &mh); + error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY, + len, &rc, &msg); if (error) return; rc->rc_id = rc_in->rc_id; rc->rc_seq_reply = rc_in->rc_seq; - rc->rc_result = status; + rc->rc_result = cpu_to_le32(status); set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots); @@ -247,21 +278,23 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) spin_unlock(&ls->ls_recover_lock); do_send: - send_rcom(ls, mh, rc); + send_rcom_stateless(msg, rc); } static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) { spin_lock(&ls->ls_rcom_spin); if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) || - rc_in->rc_id != ls->ls_rcom_seq) { + le64_to_cpu(rc_in->rc_id) != ls->ls_rcom_seq) { log_debug(ls, "reject reply %d from %d seq %llx expect %llx", - rc_in->rc_type, rc_in->rc_header.h_nodeid, - (unsigned long long)rc_in->rc_id, + le32_to_cpu(rc_in->rc_type), + le32_to_cpu(rc_in->rc_header.h_nodeid), + (unsigned long long)le64_to_cpu(rc_in->rc_id), (unsigned long long)ls->ls_rcom_seq); goto out; } - memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length); + memcpy(ls->ls_recover_buf, rc_in, + le16_to_cpu(rc_in->rc_header.h_length)); set_bit(LSFL_RCOM_READY, &ls->ls_flags); clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags); wake_up(&ls->ls_wait_general); @@ -272,21 +305,22 @@ static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len) { struct dlm_rcom *rc; - struct dlm_mhandle *mh; + struct dlm_msg *msg; int error = 0; ls->ls_recover_nodeid = nodeid; retry: - error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, &rc, &mh); + error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES, last_len, + &rc, &msg); if (error) goto out; memcpy(rc->rc_buf, last_name, last_len); allow_sync_reply(ls, &rc->rc_id); - memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size); + memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE); - send_rcom(ls, mh, rc); + send_rcom_stateless(msg, rc); error = dlm_wait_function(ls, &rcom_response); disallow_sync_reply(ls); @@ -299,14 +333,16 @@ retry: static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in) { struct dlm_rcom *rc; - struct dlm_mhandle *mh; int error, inlen, outlen, nodeid; + struct dlm_msg *msg; - nodeid = rc_in->rc_header.h_nodeid; - inlen = rc_in->rc_header.h_length - sizeof(struct dlm_rcom); - outlen = dlm_config.ci_buffer_size - sizeof(struct dlm_rcom); + nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); + inlen = le16_to_cpu(rc_in->rc_header.h_length) - + sizeof(struct dlm_rcom); + outlen = DLM_MAX_APP_BUFSIZE - sizeof(struct dlm_rcom); - error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, &rc, &mh); + error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, + &rc, &msg); if (error) return; rc->rc_id = rc_in->rc_id; @@ -314,7 +350,7 @@ static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in) dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen, nodeid); - send_rcom(ls, mh, rc); + send_rcom_stateless(msg, rc); } int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid) @@ -329,9 +365,9 @@ int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid) if (error) goto out; memcpy(rc->rc_buf, r->res_name, r->res_length); - rc->rc_id = (unsigned long) r->res_id; + rc->rc_id = cpu_to_le64(r->res_id); - send_rcom(ls, mh, rc); + send_rcom(mh, rc); out: return error; } @@ -340,29 +376,30 @@ static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in) { struct dlm_rcom *rc; struct dlm_mhandle *mh; - int error, ret_nodeid, nodeid = rc_in->rc_header.h_nodeid; - int len = rc_in->rc_header.h_length - sizeof(struct dlm_rcom); - - error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh); - if (error) - return; + int error, ret_nodeid, nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); + int len = le16_to_cpu(rc_in->rc_header.h_length) - + sizeof(struct dlm_rcom); /* Old code would send this special id to trigger a debug dump. */ - if (rc_in->rc_id == 0xFFFFFFFF) { + if (rc_in->rc_id == cpu_to_le64(0xFFFFFFFF)) { log_error(ls, "receive_rcom_lookup dump from %d", nodeid); dlm_dump_rsb_name(ls, rc_in->rc_buf, len); return; } + error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh); + if (error) + return; + error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len, DLM_LU_RECOVER_MASTER, &ret_nodeid, NULL); if (error) ret_nodeid = error; - rc->rc_result = ret_nodeid; + rc->rc_result = cpu_to_le32(ret_nodeid); rc->rc_id = rc_in->rc_id; rc->rc_seq_reply = rc_in->rc_seq; - send_rcom(ls, mh, rc); + send_rcom(mh, rc); } static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) @@ -417,9 +454,9 @@ int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb) rl = (struct rcom_lock *) rc->rc_buf; pack_rcom_lock(r, lkb, rl); - rc->rc_id = (unsigned long) r; + rc->rc_id = cpu_to_le64((uintptr_t)r); - send_rcom(ls, mh, rc); + send_rcom(mh, rc); out: return error; } @@ -429,7 +466,7 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in) { struct dlm_rcom *rc; struct dlm_mhandle *mh; - int error, nodeid = rc_in->rc_header.h_nodeid; + int error, nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); dlm_recover_master_copy(ls, rc_in); @@ -445,7 +482,7 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in) rc->rc_id = rc_in->rc_id; rc->rc_seq_reply = rc_in->rc_seq; - send_rcom(ls, mh, rc); + send_rcom(mh, rc); } /* If the lockspace doesn't exist then still send a status message @@ -459,29 +496,27 @@ int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in) char *mb; int mb_len = sizeof(struct dlm_rcom) + sizeof(struct rcom_config); - mh = dlm_lowcomms_get_buffer(nodeid, mb_len, GFP_NOFS, &mb); + mh = dlm_midcomms_get_mhandle(nodeid, mb_len, GFP_NOFS, &mb); if (!mh) return -ENOBUFS; - memset(mb, 0, mb_len); rc = (struct dlm_rcom *) mb; - rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR); - rc->rc_header.h_lockspace = rc_in->rc_header.h_lockspace; - rc->rc_header.h_nodeid = dlm_our_nodeid(); - rc->rc_header.h_length = mb_len; + rc->rc_header.h_version = cpu_to_le32(DLM_HEADER_MAJOR | DLM_HEADER_MINOR); + rc->rc_header.u.h_lockspace = rc_in->rc_header.u.h_lockspace; + rc->rc_header.h_nodeid = cpu_to_le32(dlm_our_nodeid()); + rc->rc_header.h_length = cpu_to_le16(mb_len); rc->rc_header.h_cmd = DLM_RCOM; - rc->rc_type = DLM_RCOM_STATUS_REPLY; + rc->rc_type = cpu_to_le32(DLM_RCOM_STATUS_REPLY); rc->rc_id = rc_in->rc_id; rc->rc_seq_reply = rc_in->rc_seq; - rc->rc_result = -ESRCH; + rc->rc_result = cpu_to_le32(-ESRCH); rf = (struct rcom_config *) rc->rc_buf; rf->rf_lvblen = cpu_to_le32(~0U); - dlm_rcom_out(rc); - dlm_lowcomms_commit_buffer(mh); + dlm_midcomms_commit_mhandle(mh); return 0; } @@ -539,42 +574,42 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) uint64_t seq; switch (rc->rc_type) { - case DLM_RCOM_STATUS_REPLY: + case cpu_to_le32(DLM_RCOM_STATUS_REPLY): reply = 1; break; - case DLM_RCOM_NAMES: + case cpu_to_le32(DLM_RCOM_NAMES): names = 1; break; - case DLM_RCOM_NAMES_REPLY: + case cpu_to_le32(DLM_RCOM_NAMES_REPLY): names = 1; reply = 1; break; - case DLM_RCOM_LOOKUP: + case cpu_to_le32(DLM_RCOM_LOOKUP): lookup = 1; break; - case DLM_RCOM_LOOKUP_REPLY: + case cpu_to_le32(DLM_RCOM_LOOKUP_REPLY): lookup = 1; reply = 1; break; - case DLM_RCOM_LOCK: + case cpu_to_le32(DLM_RCOM_LOCK): lock = 1; break; - case DLM_RCOM_LOCK_REPLY: + case cpu_to_le32(DLM_RCOM_LOCK_REPLY): lock = 1; reply = 1; break; - }; + } spin_lock(&ls->ls_recover_lock); status = ls->ls_recover_status; - stop = test_bit(LSFL_RECOVER_STOP, &ls->ls_flags); + stop = dlm_recovery_stopped(ls); seq = ls->ls_recover_seq; spin_unlock(&ls->ls_recover_lock); - if (stop && (rc->rc_type != DLM_RCOM_STATUS)) + if (stop && (rc->rc_type != cpu_to_le32(DLM_RCOM_STATUS))) goto ignore; - if (reply && (rc->rc_seq_reply != seq)) + if (reply && (le64_to_cpu(rc->rc_seq_reply) != seq)) goto ignore; if (!(status & DLM_RS_NODES) && (names || lookup || lock)) @@ -584,59 +619,60 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) goto ignore; switch (rc->rc_type) { - case DLM_RCOM_STATUS: + case cpu_to_le32(DLM_RCOM_STATUS): receive_rcom_status(ls, rc); break; - case DLM_RCOM_NAMES: + case cpu_to_le32(DLM_RCOM_NAMES): receive_rcom_names(ls, rc); break; - case DLM_RCOM_LOOKUP: + case cpu_to_le32(DLM_RCOM_LOOKUP): receive_rcom_lookup(ls, rc); break; - case DLM_RCOM_LOCK: - if (rc->rc_header.h_length < lock_size) + case cpu_to_le32(DLM_RCOM_LOCK): + if (le16_to_cpu(rc->rc_header.h_length) < lock_size) goto Eshort; receive_rcom_lock(ls, rc); break; - case DLM_RCOM_STATUS_REPLY: + case cpu_to_le32(DLM_RCOM_STATUS_REPLY): receive_sync_reply(ls, rc); break; - case DLM_RCOM_NAMES_REPLY: + case cpu_to_le32(DLM_RCOM_NAMES_REPLY): receive_sync_reply(ls, rc); break; - case DLM_RCOM_LOOKUP_REPLY: + case cpu_to_le32(DLM_RCOM_LOOKUP_REPLY): receive_rcom_lookup_reply(ls, rc); break; - case DLM_RCOM_LOCK_REPLY: - if (rc->rc_header.h_length < lock_size) + case cpu_to_le32(DLM_RCOM_LOCK_REPLY): + if (le16_to_cpu(rc->rc_header.h_length) < lock_size) goto Eshort; dlm_recover_process_copy(ls, rc); break; default: - log_error(ls, "receive_rcom bad type %d", rc->rc_type); + log_error(ls, "receive_rcom bad type %d", + le32_to_cpu(rc->rc_type)); } return; ignore: log_limit(ls, "dlm_receive_rcom ignore msg %d " "from %d %llu %llu recover seq %llu sts %x gen %u", - rc->rc_type, + le32_to_cpu(rc->rc_type), nodeid, - (unsigned long long)rc->rc_seq, - (unsigned long long)rc->rc_seq_reply, + (unsigned long long)le64_to_cpu(rc->rc_seq), + (unsigned long long)le64_to_cpu(rc->rc_seq_reply), (unsigned long long)seq, status, ls->ls_generation); return; Eshort: log_error(ls, "recovery message %d from %d is too short", - rc->rc_type, nodeid); + le32_to_cpu(rc->rc_type), nodeid); } |