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
85 	_create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len, seq);  in create_rcom_stateless()
101 static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,  in set_rcom_status()  argument
111 static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,  in set_rcom_config()  argument
114 	rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);  in set_rcom_config()
115 	rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);  in set_rcom_config()
117 	rf->rf_our_slot = cpu_to_le16(ls->ls_slot);  in set_rcom_config()
119 	rf->rf_generation =  cpu_to_le32(ls->ls_generation);  in set_rcom_config()
122 static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in check_rcom_config()  argument
127 		log_error(ls, "version mismatch: %x nodeid %d: %x",  in check_rcom_config()
133 	if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||  in check_rcom_config()
134 	    le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {  in check_rcom_config()
135 		log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",  in check_rcom_config()
136 			  ls->ls_lvblen, ls->ls_exflags, nodeid,  in check_rcom_config()
144 static void allow_sync_reply(struct dlm_ls *ls, __le64 *new_seq)  in allow_sync_reply()  argument
146 	spin_lock_bh(&ls->ls_rcom_spin);  in allow_sync_reply()
147 	*new_seq = cpu_to_le64(++ls->ls_rcom_seq);  in allow_sync_reply()
148 	set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in allow_sync_reply()
149 	spin_unlock_bh(&ls->ls_rcom_spin);  in allow_sync_reply()
152 static void disallow_sync_reply(struct dlm_ls *ls)  in disallow_sync_reply()  argument
154 	spin_lock_bh(&ls->ls_rcom_spin);  in disallow_sync_reply()
155 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in disallow_sync_reply()
156 	clear_bit(LSFL_RCOM_READY, &ls->ls_flags);  in disallow_sync_reply()
157 	spin_unlock_bh(&ls->ls_rcom_spin);  in disallow_sync_reply()
171 int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags,  in dlm_rcom_status()  argument
178 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_status()
181 		rc = ls->ls_recover_buf;  in dlm_rcom_status()
182 		rc->rc_result = cpu_to_le32(dlm_recover_status(ls));  in dlm_rcom_status()
187 	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,  in receive_rcom_status()  argument
237 		status = dlm_recover_status(ls);  in receive_rcom_status()
244 		status = dlm_recover_status(ls);  in receive_rcom_status()
248 	spin_lock_bh(&ls->ls_recover_lock);  in receive_rcom_status()
249 	status = ls->ls_recover_status;  in receive_rcom_status()
250 	num_slots = ls->ls_num_slots;  in receive_rcom_status()
251 	spin_unlock_bh(&ls->ls_recover_lock);  in receive_rcom_status()
255 	error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY,  in receive_rcom_status()
264 	set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);  in receive_rcom_status()
269 	spin_lock_bh(&ls->ls_recover_lock);  in receive_rcom_status()
270 	if (ls->ls_num_slots != num_slots) {  in receive_rcom_status()
271 		spin_unlock_bh(&ls->ls_recover_lock);  in receive_rcom_status()
272 		log_debug(ls, "receive_rcom_status num_slots %d to %d",  in receive_rcom_status()
273 			  num_slots, ls->ls_num_slots);  in receive_rcom_status()
275 		set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);  in receive_rcom_status()
279 	dlm_slots_copy_out(ls, rc);  in receive_rcom_status()
280 	spin_unlock_bh(&ls->ls_recover_lock);  in receive_rcom_status()
286 static void receive_sync_reply(struct dlm_ls *ls, const struct dlm_rcom *rc_in)  in receive_sync_reply()  argument
288 	spin_lock_bh(&ls->ls_rcom_spin);  in receive_sync_reply()
289 	if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||  in receive_sync_reply()
290 	    le64_to_cpu(rc_in->rc_id) != ls->ls_rcom_seq) {  in receive_sync_reply()
291 		log_debug(ls, "reject reply %d from %d seq %llx expect %llx",  in receive_sync_reply()
295 			  (unsigned long long)ls->ls_rcom_seq);  in receive_sync_reply()
298 	memcpy(ls->ls_recover_buf, rc_in,  in receive_sync_reply()
300 	set_bit(LSFL_RCOM_READY, &ls->ls_flags);  in receive_sync_reply()
301 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in receive_sync_reply()
302 	wake_up(&ls->ls_wait_general);  in receive_sync_reply()
304 	spin_unlock_bh(&ls->ls_rcom_spin);  in receive_sync_reply()
307 int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name,  in dlm_rcom_names()  argument
314 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_names()
317 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len,  in dlm_rcom_names()
323 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_names()
324 	memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);  in dlm_rcom_names()
328 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_names()
329 	disallow_sync_reply(ls);  in dlm_rcom_names()
336 static void receive_rcom_names(struct dlm_ls *ls, const struct dlm_rcom *rc_in,  in receive_rcom_names()  argument
348 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,  in receive_rcom_names()
355 	dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,  in receive_rcom_names()
364 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lookup()  local
367 	error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length,  in dlm_send_rcom_lookup()
379 static void receive_rcom_lookup(struct dlm_ls *ls,  in receive_rcom_lookup()  argument
390 		log_error(ls, "receive_rcom_lookup dump from %d", nodeid);  in receive_rcom_lookup()
391 		dlm_dump_rsb_name(ls, rc_in->rc_buf, len);  in receive_rcom_lookup()
395 	error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh,  in receive_rcom_lookup()
400 	error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,  in receive_rcom_lookup()
411 static void receive_rcom_lookup_reply(struct dlm_ls *ls,  in receive_rcom_lookup_reply()  argument
414 	dlm_recover_master_reply(ls, rc_in);  in receive_rcom_lookup_reply()
449 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lock()  local
456 		len += ls->ls_lvblen;  in dlm_send_rcom_lock()
458 	error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh,  in dlm_send_rcom_lock()
473 static void receive_rcom_lock(struct dlm_ls *ls, const struct dlm_rcom *rc_in,  in receive_rcom_lock()  argument
482 	dlm_recover_master_copy(ls, rc_in, &rl_remid, &rl_result);  in receive_rcom_lock()
484 	error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY,  in receive_rcom_lock()
582 void dlm_receive_rcom(struct dlm_ls *ls, const struct dlm_rcom *rc, int nodeid)  in dlm_receive_rcom()  argument
616 	spin_lock_bh(&ls->ls_recover_lock);  in dlm_receive_rcom()
617 	status = ls->ls_recover_status;  in dlm_receive_rcom()
618 	stop = dlm_recovery_stopped(ls);  in dlm_receive_rcom()
619 	seq = ls->ls_recover_seq;  in dlm_receive_rcom()
620 	spin_unlock_bh(&ls->ls_recover_lock);  in dlm_receive_rcom()
636 		receive_rcom_status(ls, rc, seq);  in dlm_receive_rcom()
640 		receive_rcom_names(ls, rc, seq);  in dlm_receive_rcom()
644 		receive_rcom_lookup(ls, rc, seq);  in dlm_receive_rcom()
650 		receive_rcom_lock(ls, rc, seq);  in dlm_receive_rcom()
654 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
658 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
662 		receive_rcom_lookup_reply(ls, rc);  in dlm_receive_rcom()
668 		dlm_recover_process_copy(ls, rc, seq);  in dlm_receive_rcom()
672 		log_error(ls, "receive_rcom bad type %d",  in dlm_receive_rcom()
678 	log_limit(ls, "dlm_receive_rcom ignore msg %d "  in dlm_receive_rcom()
685 		   status, ls->ls_generation);  in dlm_receive_rcom()
688 	log_error(ls, "recovery message %d from %d is too short",  in dlm_receive_rcom()