25 static int rcom_response(struct dlm_ls *ls)  in rcom_response()  argument
27 	return test_bit(LSFL_RCOM_READY, &ls->ls_flags);  in rcom_response()
30 static void _create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,  in _create_rcom()  argument
38 	rc->rc_header.u.h_lockspace = cpu_to_le32(ls->ls_global_id);  in _create_rcom()
45 	spin_lock(&ls->ls_recover_lock);  in _create_rcom()
46 	rc->rc_seq = cpu_to_le64(ls->ls_recover_seq);  in _create_rcom()
47 	spin_unlock(&ls->ls_recover_lock);  in _create_rcom()
52 static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,  in create_rcom()  argument
66 	_create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len);  in create_rcom()
71 static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type,  in create_rcom_stateless()  argument
87 	_create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len);  in create_rcom_stateless()
103 static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,  in set_rcom_status()  argument
113 static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,  in set_rcom_config()  argument
116 	rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);  in set_rcom_config()
117 	rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);  in set_rcom_config()
119 	rf->rf_our_slot = cpu_to_le16(ls->ls_slot);  in set_rcom_config()
121 	rf->rf_generation =  cpu_to_le32(ls->ls_generation);  in set_rcom_config()
124 static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in check_rcom_config()  argument
129 		log_error(ls, "version mismatch: %x nodeid %d: %x",  in check_rcom_config()
135 	if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||  in check_rcom_config()
136 	    le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {  in check_rcom_config()
137 		log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",  in check_rcom_config()
138 			  ls->ls_lvblen, ls->ls_exflags, nodeid,  in check_rcom_config()
146 static void allow_sync_reply(struct dlm_ls *ls, __le64 *new_seq)  in allow_sync_reply()  argument
148 	spin_lock(&ls->ls_rcom_spin);  in allow_sync_reply()
149 	*new_seq = cpu_to_le64(++ls->ls_rcom_seq);  in allow_sync_reply()
150 	set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in allow_sync_reply()
151 	spin_unlock(&ls->ls_rcom_spin);  in allow_sync_reply()
154 static void disallow_sync_reply(struct dlm_ls *ls)  in disallow_sync_reply()  argument
156 	spin_lock(&ls->ls_rcom_spin);  in disallow_sync_reply()
157 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in disallow_sync_reply()
158 	clear_bit(LSFL_RCOM_READY, &ls->ls_flags);  in disallow_sync_reply()
159 	spin_unlock(&ls->ls_rcom_spin);  in disallow_sync_reply()
173 int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)  in dlm_rcom_status()  argument
179 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_status()
182 		rc = ls->ls_recover_buf;  in dlm_rcom_status()
183 		rc->rc_result = cpu_to_le32(dlm_recover_status(ls));  in dlm_rcom_status()
188 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS,  in dlm_rcom_status()
193 	set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);  in dlm_rcom_status()
195 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_status()
196 	memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);  in dlm_rcom_status()
200 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_status()
201 	disallow_sync_reply(ls);  in dlm_rcom_status()
207 	rc = ls->ls_recover_buf;  in dlm_rcom_status()
211 		log_debug(ls, "remote node %d not ready", nodeid);  in dlm_rcom_status()
215 		error = check_rcom_config(ls, rc, nodeid);  in dlm_rcom_status()
223 static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_status()  argument
235 		status = dlm_recover_status(ls);  in receive_rcom_status()
242 		status = dlm_recover_status(ls);  in receive_rcom_status()
246 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
247 	status = ls->ls_recover_status;  in receive_rcom_status()
248 	num_slots = ls->ls_num_slots;  in receive_rcom_status()
249 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
253 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY,  in receive_rcom_status()
262 	set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);  in receive_rcom_status()
267 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
268 	if (ls->ls_num_slots != num_slots) {  in receive_rcom_status()
269 		spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
270 		log_debug(ls, "receive_rcom_status num_slots %d to %d",  in receive_rcom_status()
271 			  num_slots, ls->ls_num_slots);  in receive_rcom_status()
273 		set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);  in receive_rcom_status()
277 	dlm_slots_copy_out(ls, rc);  in receive_rcom_status()
278 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
284 static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_sync_reply()  argument
286 	spin_lock(&ls->ls_rcom_spin);  in receive_sync_reply()
287 	if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||  in receive_sync_reply()
288 	    le64_to_cpu(rc_in->rc_id) != ls->ls_rcom_seq) {  in receive_sync_reply()
289 		log_debug(ls, "reject reply %d from %d seq %llx expect %llx",  in receive_sync_reply()
293 			  (unsigned long long)ls->ls_rcom_seq);  in receive_sync_reply()
296 	memcpy(ls->ls_recover_buf, rc_in,  in receive_sync_reply()
298 	set_bit(LSFL_RCOM_READY, &ls->ls_flags);  in receive_sync_reply()
299 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in receive_sync_reply()
300 	wake_up(&ls->ls_wait_general);  in receive_sync_reply()
302 	spin_unlock(&ls->ls_rcom_spin);  in receive_sync_reply()
305 int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)  in dlm_rcom_names()  argument
311 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_names()
314 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES, last_len,  in dlm_rcom_names()
320 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_names()
321 	memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);  in dlm_rcom_names()
325 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_names()
326 	disallow_sync_reply(ls);  in dlm_rcom_names()
333 static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_names()  argument
344 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,  in receive_rcom_names()
351 	dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,  in receive_rcom_names()
360 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lookup()  local
363 	error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length,  in dlm_send_rcom_lookup()
375 static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lookup()  argument
385 		log_error(ls, "receive_rcom_lookup dump from %d", nodeid);  in receive_rcom_lookup()
386 		dlm_dump_rsb_name(ls, rc_in->rc_buf, len);  in receive_rcom_lookup()
390 	error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh);  in receive_rcom_lookup()
394 	error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,  in receive_rcom_lookup()
405 static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lookup_reply()  argument
407 	dlm_recover_master_reply(ls, rc_in);  in receive_rcom_lookup_reply()
442 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lock()  local
449 		len += ls->ls_lvblen;  in dlm_send_rcom_lock()
451 	error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh);  in dlm_send_rcom_lock()
465 static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lock()  argument
471 	dlm_recover_master_copy(ls, rc_in);  in receive_rcom_lock()
473 	error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY,  in receive_rcom_lock()
569 void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in dlm_receive_rcom()  argument
603 	spin_lock(&ls->ls_recover_lock);  in dlm_receive_rcom()
604 	status = ls->ls_recover_status;  in dlm_receive_rcom()
605 	stop = dlm_recovery_stopped(ls);  in dlm_receive_rcom()
606 	seq = ls->ls_recover_seq;  in dlm_receive_rcom()
607 	spin_unlock(&ls->ls_recover_lock);  in dlm_receive_rcom()
623 		receive_rcom_status(ls, rc);  in dlm_receive_rcom()
627 		receive_rcom_names(ls, rc);  in dlm_receive_rcom()
631 		receive_rcom_lookup(ls, rc);  in dlm_receive_rcom()
637 		receive_rcom_lock(ls, rc);  in dlm_receive_rcom()
641 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
645 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
649 		receive_rcom_lookup_reply(ls, rc);  in dlm_receive_rcom()
655 		dlm_recover_process_copy(ls, rc);  in dlm_receive_rcom()
659 		log_error(ls, "receive_rcom bad type %d",  in dlm_receive_rcom()
665 	log_limit(ls, "dlm_receive_rcom ignore msg %d "  in dlm_receive_rcom()
672 		   status, ls->ls_generation);  in dlm_receive_rcom()
675 	log_error(ls, "recovery message %d from %d is too short",  in dlm_receive_rcom()