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
39 	rc->rc_header.u.h_lockspace = cpu_to_le32(ls->ls_global_id);  in _create_rcom()
50 static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,  in create_rcom()  argument
65 	_create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len, seq);  in create_rcom()
70 static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type,  in create_rcom_stateless()  argument
86 	_create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len, seq);  in create_rcom_stateless()
102 static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,  in set_rcom_status()  argument
112 static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,  in set_rcom_config()  argument
115 	rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);  in set_rcom_config()
116 	rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);  in set_rcom_config()
118 	rf->rf_our_slot = cpu_to_le16(ls->ls_slot);  in set_rcom_config()
120 	rf->rf_generation =  cpu_to_le32(ls->ls_generation);  in set_rcom_config()
123 static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in check_rcom_config()  argument
128 		log_error(ls, "version mismatch: %x nodeid %d: %x",  in check_rcom_config()
134 	if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||  in check_rcom_config()
135 	    le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {  in check_rcom_config()
136 		log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",  in check_rcom_config()
137 			  ls->ls_lvblen, ls->ls_exflags, nodeid,  in check_rcom_config()
145 static void allow_sync_reply(struct dlm_ls *ls, __le64 *new_seq)  in allow_sync_reply()  argument
147 	spin_lock(&ls->ls_rcom_spin);  in allow_sync_reply()
148 	*new_seq = cpu_to_le64(++ls->ls_rcom_seq);  in allow_sync_reply()
149 	set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in allow_sync_reply()
150 	spin_unlock(&ls->ls_rcom_spin);  in allow_sync_reply()
153 static void disallow_sync_reply(struct dlm_ls *ls)  in disallow_sync_reply()  argument
155 	spin_lock(&ls->ls_rcom_spin);  in disallow_sync_reply()
156 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in disallow_sync_reply()
157 	clear_bit(LSFL_RCOM_READY, &ls->ls_flags);  in disallow_sync_reply()
158 	spin_unlock(&ls->ls_rcom_spin);  in disallow_sync_reply()
172 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()
194 	set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);  in dlm_rcom_status()
196 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_status()
197 	memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);  in dlm_rcom_status()
201 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_status()
202 	disallow_sync_reply(ls);  in dlm_rcom_status()
208 	rc = ls->ls_recover_buf;  in dlm_rcom_status()
212 		log_debug(ls, "remote node %d not ready", nodeid);  in dlm_rcom_status()
216 		error = check_rcom_config(ls, rc, nodeid);  in dlm_rcom_status()
224 static void receive_rcom_status(struct dlm_ls *ls,  in receive_rcom_status()  argument
238 		status = dlm_recover_status(ls);  in receive_rcom_status()
245 		status = dlm_recover_status(ls);  in receive_rcom_status()
249 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
250 	status = ls->ls_recover_status;  in receive_rcom_status()
251 	num_slots = ls->ls_num_slots;  in receive_rcom_status()
252 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
256 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY,  in receive_rcom_status()
265 	set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);  in receive_rcom_status()
270 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
271 	if (ls->ls_num_slots != num_slots) {  in receive_rcom_status()
272 		spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
273 		log_debug(ls, "receive_rcom_status num_slots %d to %d",  in receive_rcom_status()
274 			  num_slots, ls->ls_num_slots);  in receive_rcom_status()
276 		set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);  in receive_rcom_status()
280 	dlm_slots_copy_out(ls, rc);  in receive_rcom_status()
281 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
287 static void receive_sync_reply(struct dlm_ls *ls, const struct dlm_rcom *rc_in)  in receive_sync_reply()  argument
289 	spin_lock(&ls->ls_rcom_spin);  in receive_sync_reply()
290 	if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||  in receive_sync_reply()
291 	    le64_to_cpu(rc_in->rc_id) != ls->ls_rcom_seq) {  in receive_sync_reply()
292 		log_debug(ls, "reject reply %d from %d seq %llx expect %llx",  in receive_sync_reply()
296 			  (unsigned long long)ls->ls_rcom_seq);  in receive_sync_reply()
299 	memcpy(ls->ls_recover_buf, rc_in,  in receive_sync_reply()
301 	set_bit(LSFL_RCOM_READY, &ls->ls_flags);  in receive_sync_reply()
302 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in receive_sync_reply()
303 	wake_up(&ls->ls_wait_general);  in receive_sync_reply()
305 	spin_unlock(&ls->ls_rcom_spin);  in receive_sync_reply()
308 int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name,  in dlm_rcom_names()  argument
315 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_names()
318 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len,  in dlm_rcom_names()
324 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_names()
325 	memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);  in dlm_rcom_names()
329 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_names()
330 	disallow_sync_reply(ls);  in dlm_rcom_names()
337 static void receive_rcom_names(struct dlm_ls *ls, const struct dlm_rcom *rc_in,  in receive_rcom_names()  argument
349 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,  in receive_rcom_names()
356 	dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,  in receive_rcom_names()
365 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lookup()  local
368 	error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length,  in dlm_send_rcom_lookup()
380 static void receive_rcom_lookup(struct dlm_ls *ls,  in receive_rcom_lookup()  argument
391 		log_error(ls, "receive_rcom_lookup dump from %d", nodeid);  in receive_rcom_lookup()
392 		dlm_dump_rsb_name(ls, rc_in->rc_buf, len);  in receive_rcom_lookup()
396 	error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh,  in receive_rcom_lookup()
401 	error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,  in receive_rcom_lookup()
412 static void receive_rcom_lookup_reply(struct dlm_ls *ls,  in receive_rcom_lookup_reply()  argument
415 	dlm_recover_master_reply(ls, rc_in);  in receive_rcom_lookup_reply()
450 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lock()  local
457 		len += ls->ls_lvblen;  in dlm_send_rcom_lock()
459 	error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh,  in dlm_send_rcom_lock()
474 static void receive_rcom_lock(struct dlm_ls *ls, const struct dlm_rcom *rc_in,  in receive_rcom_lock()  argument
483 	dlm_recover_master_copy(ls, rc_in, &rl_remid, &rl_result);  in receive_rcom_lock()
485 	error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY,  in receive_rcom_lock()
583 void dlm_receive_rcom(struct dlm_ls *ls, const struct dlm_rcom *rc, int nodeid)  in dlm_receive_rcom()  argument
617 	spin_lock(&ls->ls_recover_lock);  in dlm_receive_rcom()
618 	status = ls->ls_recover_status;  in dlm_receive_rcom()
619 	stop = dlm_recovery_stopped(ls);  in dlm_receive_rcom()
620 	seq = ls->ls_recover_seq;  in dlm_receive_rcom()
621 	spin_unlock(&ls->ls_recover_lock);  in dlm_receive_rcom()
637 		receive_rcom_status(ls, rc, seq);  in dlm_receive_rcom()
641 		receive_rcom_names(ls, rc, seq);  in dlm_receive_rcom()
645 		receive_rcom_lookup(ls, rc, seq);  in dlm_receive_rcom()
651 		receive_rcom_lock(ls, rc, seq);  in dlm_receive_rcom()
655 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
659 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
663 		receive_rcom_lookup_reply(ls, rc);  in dlm_receive_rcom()
669 		dlm_recover_process_copy(ls, rc, seq);  in dlm_receive_rcom()
673 		log_error(ls, "receive_rcom bad type %d",  in dlm_receive_rcom()
679 	log_limit(ls, "dlm_receive_rcom ignore msg %d "  in dlm_receive_rcom()
686 		   status, ls->ls_generation);  in dlm_receive_rcom()
689 	log_error(ls, "recovery message %d from %d is too short",  in dlm_receive_rcom()