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 int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,  in create_rcom()  argument
49 	rc->rc_header.h_lockspace = ls->ls_global_id;  in create_rcom()
56 	spin_lock(&ls->ls_recover_lock);  in create_rcom()
57 	rc->rc_seq = ls->ls_recover_seq;  in create_rcom()
58 	spin_unlock(&ls->ls_recover_lock);  in create_rcom()
65 static void send_rcom(struct dlm_ls *ls, struct dlm_mhandle *mh,  in send_rcom()  argument
72 static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,  in set_rcom_status()  argument
82 static void set_rcom_config(struct dlm_ls *ls, struct rcom_config *rf,  in set_rcom_config()  argument
85 	rf->rf_lvblen = cpu_to_le32(ls->ls_lvblen);  in set_rcom_config()
86 	rf->rf_lsflags = cpu_to_le32(ls->ls_exflags);  in set_rcom_config()
88 	rf->rf_our_slot = cpu_to_le16(ls->ls_slot);  in set_rcom_config()
90 	rf->rf_generation =  cpu_to_le32(ls->ls_generation);  in set_rcom_config()
93 static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in check_rcom_config()  argument
98 		log_error(ls, "version mismatch: %x nodeid %d: %x",  in check_rcom_config()
104 	if (le32_to_cpu(rf->rf_lvblen) != ls->ls_lvblen ||  in check_rcom_config()
105 	    le32_to_cpu(rf->rf_lsflags) != ls->ls_exflags) {  in check_rcom_config()
106 		log_error(ls, "config mismatch: %d,%x nodeid %d: %d,%x",  in check_rcom_config()
107 			  ls->ls_lvblen, ls->ls_exflags, nodeid,  in check_rcom_config()
115 static void allow_sync_reply(struct dlm_ls *ls, uint64_t *new_seq)  in allow_sync_reply()  argument
117 	spin_lock(&ls->ls_rcom_spin);  in allow_sync_reply()
118 	*new_seq = ++ls->ls_rcom_seq;  in allow_sync_reply()
119 	set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in allow_sync_reply()
120 	spin_unlock(&ls->ls_rcom_spin);  in allow_sync_reply()
123 static void disallow_sync_reply(struct dlm_ls *ls)  in disallow_sync_reply()  argument
125 	spin_lock(&ls->ls_rcom_spin);  in disallow_sync_reply()
126 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in disallow_sync_reply()
127 	clear_bit(LSFL_RCOM_READY, &ls->ls_flags);  in disallow_sync_reply()
128 	spin_unlock(&ls->ls_rcom_spin);  in disallow_sync_reply()
142 int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)  in dlm_rcom_status()  argument
148 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_status()
151 		rc = ls->ls_recover_buf;  in dlm_rcom_status()
152 		rc->rc_result = dlm_recover_status(ls);  in dlm_rcom_status()
157 	error = create_rcom(ls, nodeid, DLM_RCOM_STATUS,  in dlm_rcom_status()
162 	set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);  in dlm_rcom_status()
164 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_status()
165 	memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);  in dlm_rcom_status()
167 	send_rcom(ls, mh, rc);  in dlm_rcom_status()
169 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_status()
170 	disallow_sync_reply(ls);  in dlm_rcom_status()
176 	rc = ls->ls_recover_buf;  in dlm_rcom_status()
180 		log_debug(ls, "remote node %d not ready", nodeid);  in dlm_rcom_status()
184 		error = check_rcom_config(ls, rc, nodeid);  in dlm_rcom_status()
192 static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_status()  argument
204 		status = dlm_recover_status(ls);  in receive_rcom_status()
211 		status = dlm_recover_status(ls);  in receive_rcom_status()
215 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
216 	status = ls->ls_recover_status;  in receive_rcom_status()
217 	num_slots = ls->ls_num_slots;  in receive_rcom_status()
218 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
222 	error = create_rcom(ls, nodeid, DLM_RCOM_STATUS_REPLY,  in receive_rcom_status()
231 	set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);  in receive_rcom_status()
236 	spin_lock(&ls->ls_recover_lock);  in receive_rcom_status()
237 	if (ls->ls_num_slots != num_slots) {  in receive_rcom_status()
238 		spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
239 		log_debug(ls, "receive_rcom_status num_slots %d to %d",  in receive_rcom_status()
240 			  num_slots, ls->ls_num_slots);  in receive_rcom_status()
242 		set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, 0);  in receive_rcom_status()
246 	dlm_slots_copy_out(ls, rc);  in receive_rcom_status()
247 	spin_unlock(&ls->ls_recover_lock);  in receive_rcom_status()
250 	send_rcom(ls, mh, rc);  in receive_rcom_status()
253 static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_sync_reply()  argument
255 	spin_lock(&ls->ls_rcom_spin);  in receive_sync_reply()
256 	if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||  in receive_sync_reply()
257 	    rc_in->rc_id != ls->ls_rcom_seq) {  in receive_sync_reply()
258 		log_debug(ls, "reject reply %d from %d seq %llx expect %llx",  in receive_sync_reply()
261 			  (unsigned long long)ls->ls_rcom_seq);  in receive_sync_reply()
264 	memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length);  in receive_sync_reply()
265 	set_bit(LSFL_RCOM_READY, &ls->ls_flags);  in receive_sync_reply()
266 	clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);  in receive_sync_reply()
267 	wake_up(&ls->ls_wait_general);  in receive_sync_reply()
269 	spin_unlock(&ls->ls_rcom_spin);  in receive_sync_reply()
272 int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)  in dlm_rcom_names()  argument
278 	ls->ls_recover_nodeid = nodeid;  in dlm_rcom_names()
281 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, &rc, &mh);  in dlm_rcom_names()
286 	allow_sync_reply(ls, &rc->rc_id);  in dlm_rcom_names()
287 	memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);  in dlm_rcom_names()
289 	send_rcom(ls, mh, rc);  in dlm_rcom_names()
291 	error = dlm_wait_function(ls, &rcom_response);  in dlm_rcom_names()
292 	disallow_sync_reply(ls);  in dlm_rcom_names()
299 static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_names()  argument
309 	error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, &rc, &mh);  in receive_rcom_names()
315 	dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,  in receive_rcom_names()
317 	send_rcom(ls, mh, rc);  in receive_rcom_names()
324 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lookup()  local
327 	error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length,  in dlm_send_rcom_lookup()
334 	send_rcom(ls, mh, rc);  in dlm_send_rcom_lookup()
339 static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lookup()  argument
346 	error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh);  in receive_rcom_lookup()
352 		log_error(ls, "receive_rcom_lookup dump from %d", nodeid);  in receive_rcom_lookup()
353 		dlm_dump_rsb_name(ls, rc_in->rc_buf, len);  in receive_rcom_lookup()
357 	error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,  in receive_rcom_lookup()
365 	send_rcom(ls, mh, rc);  in receive_rcom_lookup()
368 static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lookup_reply()  argument
370 	dlm_recover_master_reply(ls, rc_in);  in receive_rcom_lookup_reply()
405 	struct dlm_ls *ls = r->res_ls;  in dlm_send_rcom_lock()  local
412 		len += ls->ls_lvblen;  in dlm_send_rcom_lock()
414 	error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh);  in dlm_send_rcom_lock()
422 	send_rcom(ls, mh, rc);  in dlm_send_rcom_lock()
428 static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)  in receive_rcom_lock()  argument
434 	dlm_recover_master_copy(ls, rc_in);  in receive_rcom_lock()
436 	error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY,  in receive_rcom_lock()
448 	send_rcom(ls, mh, rc);  in receive_rcom_lock()
534 void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)  in dlm_receive_rcom()  argument
568 	spin_lock(&ls->ls_recover_lock);  in dlm_receive_rcom()
569 	status = ls->ls_recover_status;  in dlm_receive_rcom()
570 	stop = test_bit(LSFL_RECOVER_STOP, &ls->ls_flags);  in dlm_receive_rcom()
571 	seq = ls->ls_recover_seq;  in dlm_receive_rcom()
572 	spin_unlock(&ls->ls_recover_lock);  in dlm_receive_rcom()
588 		receive_rcom_status(ls, rc);  in dlm_receive_rcom()
592 		receive_rcom_names(ls, rc);  in dlm_receive_rcom()
596 		receive_rcom_lookup(ls, rc);  in dlm_receive_rcom()
602 		receive_rcom_lock(ls, rc);  in dlm_receive_rcom()
606 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
610 		receive_sync_reply(ls, rc);  in dlm_receive_rcom()
614 		receive_rcom_lookup_reply(ls, rc);  in dlm_receive_rcom()
620 		dlm_recover_process_copy(ls, rc);  in dlm_receive_rcom()
624 		log_error(ls, "receive_rcom bad type %d", rc->rc_type);  in dlm_receive_rcom()
629 	log_limit(ls, "dlm_receive_rcom ignore msg %d "  in dlm_receive_rcom()
636 		   status, ls->ls_generation);  in dlm_receive_rcom()
639 	log_error(ls, "recovery message %d from %d is too short",  in dlm_receive_rcom()