481 	struct drbd_peer_device *peer_device;  in conn_lowest_minor()  local
485 	peer_device = idr_get_next(&connection->peer_devices, &vnr);  in conn_lowest_minor()
486 	if (peer_device)  in conn_lowest_minor()
487 		minor = device_to_minor(peer_device->device);  in conn_lowest_minor()
632 void *drbd_prepare_command(struct drbd_peer_device *peer_device, struct drbd_socket *sock)  in drbd_prepare_command()  argument
634 	return conn_prepare_command(peer_device->connection, sock);  in drbd_prepare_command()
686 int drbd_send_command(struct drbd_peer_device *peer_device, struct drbd_socket *sock,  in drbd_send_command()  argument
692 	err = __send_command(peer_device->connection, peer_device->device->vnr,  in drbd_send_command()
718 int drbd_send_sync_param(struct drbd_peer_device *peer_device)  in drbd_send_sync_param()  argument
723 	const int apv = peer_device->connection->agreed_pro_version;  in drbd_send_sync_param()
728 	sock = &peer_device->connection->data;  in drbd_send_sync_param()
729 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_sync_param()
734 	nc = rcu_dereference(peer_device->connection->net_conf);  in drbd_send_sync_param()
747 	if (get_ldev(peer_device->device)) {  in drbd_send_sync_param()
748 		dc = rcu_dereference(peer_device->device->ldev->disk_conf);  in drbd_send_sync_param()
754 		put_ldev(peer_device->device);  in drbd_send_sync_param()
769 	return drbd_send_command(peer_device, sock, cmd, size, NULL, 0);  in drbd_send_sync_param()
827 static int _drbd_send_uuids(struct drbd_peer_device *peer_device, u64 uuid_flags)  in _drbd_send_uuids()  argument
829 	struct drbd_device *device = peer_device->device;  in _drbd_send_uuids()
837 	sock = &peer_device->connection->data;  in _drbd_send_uuids()
838 	p = drbd_prepare_command(peer_device, sock);  in _drbd_send_uuids()
851 	uuid_flags |= rcu_dereference(peer_device->connection->net_conf)->discard_my_data ? 1 : 0;  in _drbd_send_uuids()
858 	return drbd_send_command(peer_device, sock, P_UUIDS, sizeof(*p), NULL, 0);  in _drbd_send_uuids()
861 int drbd_send_uuids(struct drbd_peer_device *peer_device)  in drbd_send_uuids()  argument
863 	return _drbd_send_uuids(peer_device, 0);  in drbd_send_uuids()
866 int drbd_send_uuids_skip_initial_sync(struct drbd_peer_device *peer_device)  in drbd_send_uuids_skip_initial_sync()  argument
868 	return _drbd_send_uuids(peer_device, 8);  in drbd_send_uuids_skip_initial_sync()
889 void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *peer_device)  in drbd_gen_and_send_sync_uuid()  argument
891 	struct drbd_device *device = peer_device->device;  in drbd_gen_and_send_sync_uuid()
907 	sock = &peer_device->connection->data;  in drbd_gen_and_send_sync_uuid()
908 	p = drbd_prepare_command(peer_device, sock);  in drbd_gen_and_send_sync_uuid()
911 		drbd_send_command(peer_device, sock, P_SYNC_UUID, sizeof(*p), NULL, 0);  in drbd_gen_and_send_sync_uuid()
940 int drbd_send_sizes(struct drbd_peer_device *peer_device, int trigger_reply, enum dds_flags flags)  in drbd_send_sizes()  argument
942 	struct drbd_device *device = peer_device->device;  in drbd_send_sizes()
950 	sock = &peer_device->connection->data;  in drbd_send_sizes()
951 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_sizes()
956 	if (peer_device->connection->agreed_features & DRBD_FF_WSAME)  in drbd_send_sizes()
979 	if (peer_device->connection->agreed_pro_version <= 94)  in drbd_send_sizes()
981 	else if (peer_device->connection->agreed_pro_version < 100)  in drbd_send_sizes()
991 	return drbd_send_command(peer_device, sock, P_SIZES, packet_size, NULL, 0);  in drbd_send_sizes()
998 int drbd_send_current_state(struct drbd_peer_device *peer_device)  in drbd_send_current_state()  argument
1003 	sock = &peer_device->connection->data;  in drbd_send_current_state()
1004 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_current_state()
1007 	p->state = cpu_to_be32(peer_device->device->state.i); /* Within the send mutex */  in drbd_send_current_state()
1008 	return drbd_send_command(peer_device, sock, P_STATE, sizeof(*p), NULL, 0);  in drbd_send_current_state()
1021 int drbd_send_state(struct drbd_peer_device *peer_device, union drbd_state state)  in drbd_send_state()  argument
1026 	sock = &peer_device->connection->data;  in drbd_send_state()
1027 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_state()
1031 	return drbd_send_command(peer_device, sock, P_STATE, sizeof(*p), NULL, 0);  in drbd_send_state()
1034 int drbd_send_state_req(struct drbd_peer_device *peer_device, union drbd_state mask, union drbd_sta…  in drbd_send_state_req()  argument
1039 	sock = &peer_device->connection->data;  in drbd_send_state_req()
1040 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_state_req()
1045 	return drbd_send_command(peer_device, sock, P_STATE_CHG_REQ, sizeof(*p), NULL, 0);  in drbd_send_state_req()
1064 void drbd_send_sr_reply(struct drbd_peer_device *peer_device, enum drbd_state_rv retcode)  in drbd_send_sr_reply()  argument
1069 	sock = &peer_device->connection->meta;  in drbd_send_sr_reply()
1070 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_sr_reply()
1073 		drbd_send_command(peer_device, sock, P_STATE_CHG_REPLY, sizeof(*p), NULL, 0);  in drbd_send_sr_reply()
1342 static int _drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in _drbd_send_ack()  argument
1348 	if (peer_device->device->state.conn < C_CONNECTED)  in _drbd_send_ack()
1351 	sock = &peer_device->connection->meta;  in _drbd_send_ack()
1352 	p = drbd_prepare_command(peer_device, sock);  in _drbd_send_ack()
1358 	p->seq_num = cpu_to_be32(atomic_inc_return(&peer_device->device->packet_seq));  in _drbd_send_ack()
1359 	return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);  in _drbd_send_ack()
1365 void drbd_send_ack_dp(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in drbd_send_ack_dp()  argument
1368 	if (peer_device->connection->peer_integrity_tfm)  in drbd_send_ack_dp()
1369 		data_size -= crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm);  in drbd_send_ack_dp()
1370 	_drbd_send_ack(peer_device, cmd, dp->sector, cpu_to_be32(data_size),  in drbd_send_ack_dp()
1374 void drbd_send_ack_rp(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in drbd_send_ack_rp()  argument
1377 	_drbd_send_ack(peer_device, cmd, rp->sector, rp->blksize, rp->block_id);  in drbd_send_ack_rp()
1386 int drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in drbd_send_ack()  argument
1389 	return _drbd_send_ack(peer_device, cmd,  in drbd_send_ack()
1397 int drbd_send_ack_ex(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in drbd_send_ack_ex()  argument
1400 	return _drbd_send_ack(peer_device, cmd,  in drbd_send_ack_ex()
1406 int drbd_send_rs_deallocated(struct drbd_peer_device *peer_device,  in drbd_send_rs_deallocated()  argument
1412 	sock = &peer_device->connection->data;  in drbd_send_rs_deallocated()
1413 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_rs_deallocated()
1419 	return drbd_send_command(peer_device, sock, P_RS_DEALLOCATED, sizeof(*p), NULL, 0);  in drbd_send_rs_deallocated()
1422 int drbd_send_drequest(struct drbd_peer_device *peer_device, int cmd,  in drbd_send_drequest()  argument
1428 	sock = &peer_device->connection->data;  in drbd_send_drequest()
1429 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_drequest()
1435 	return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);  in drbd_send_drequest()
1438 int drbd_send_drequest_csum(struct drbd_peer_device *peer_device, sector_t sector, int size,  in drbd_send_drequest_csum()  argument
1446 	sock = &peer_device->connection->data;  in drbd_send_drequest_csum()
1447 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_drequest_csum()
1453 	return drbd_send_command(peer_device, sock, cmd, sizeof(*p), digest, digest_size);  in drbd_send_drequest_csum()
1456 int drbd_send_ov_request(struct drbd_peer_device *peer_device, sector_t sector, int size)  in drbd_send_ov_request()  argument
1461 	sock = &peer_device->connection->data;  in drbd_send_ov_request()
1462 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_ov_request()
1468 	return drbd_send_command(peer_device, sock, P_OV_REQUEST, sizeof(*p), NULL, 0);  in drbd_send_ov_request()
1526 static int _drbd_no_send_page(struct drbd_peer_device *peer_device, struct page *page,  in _drbd_no_send_page()  argument
1533 	socket = peer_device->connection->data.socket;  in _drbd_no_send_page()
1535 	err = drbd_send_all(peer_device->connection, socket, addr, size, msg_flags);  in _drbd_no_send_page()
1538 		peer_device->device->send_cnt += size >> 9;  in _drbd_no_send_page()
1542 static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *page,  in _drbd_send_page()  argument
1545 	struct socket *socket = peer_device->connection->data.socket;  in _drbd_send_page()
1556 		return _drbd_no_send_page(peer_device, page, offset, size, msg_flags);  in _drbd_send_page()
1559 	drbd_update_congested(peer_device->connection);  in _drbd_send_page()
1566 				if (we_should_drop_the_connection(peer_device->connection, socket))  in _drbd_send_page()
1570 			drbd_warn(peer_device->device, "%s: size=%d len=%d sent=%d\n",  in _drbd_send_page()
1579 	clear_bit(NET_CONGESTED, &peer_device->connection->flags);  in _drbd_send_page()
1583 		peer_device->device->send_cnt += size >> 9;  in _drbd_send_page()
1588 static int _drbd_send_bio(struct drbd_peer_device *peer_device, struct bio *bio)  in _drbd_send_bio()  argument
1597 		err = _drbd_no_send_page(peer_device, bvec.bv_page,  in _drbd_send_bio()
1610 static int _drbd_send_zc_bio(struct drbd_peer_device *peer_device, struct bio *bio)  in _drbd_send_zc_bio()  argument
1619 		err = _drbd_send_page(peer_device, bvec.bv_page,  in _drbd_send_zc_bio()
1631 static int _drbd_send_zc_ee(struct drbd_peer_device *peer_device,  in _drbd_send_zc_ee()  argument
1642 		err = _drbd_send_page(peer_device, page, 0, l,  in _drbd_send_zc_ee()
1672 int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *req)  in drbd_send_dblock()  argument
1674 	struct drbd_device *device = peer_device->device;  in drbd_send_dblock()
1683 	sock = &peer_device->connection->data;  in drbd_send_dblock()
1684 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_dblock()
1685 	digest_size = peer_device->connection->integrity_tfm ?  in drbd_send_dblock()
1686 		      crypto_shash_digestsize(peer_device->connection->integrity_tfm) : 0;  in drbd_send_dblock()
1693 	dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio);  in drbd_send_dblock()
1697 	if (peer_device->connection->agreed_pro_version >= 100) {  in drbd_send_dblock()
1712 		err = __send_command(peer_device->connection, device->vnr, sock, cmd, sizeof(*t), NULL, 0);  in drbd_send_dblock()
1728 		drbd_csum_bio(peer_device->connection->integrity_tfm, req->master_bio, digest_out);  in drbd_send_dblock()
1731 		    __send_command(peer_device->connection, device->vnr, sock, P_WSAME,  in drbd_send_dblock()
1736 		    __send_command(peer_device->connection, device->vnr, sock, P_DATA,  in drbd_send_dblock()
1751 			err = _drbd_send_bio(peer_device, req->master_bio);  in drbd_send_dblock()
1753 			err = _drbd_send_zc_bio(peer_device, req->master_bio);  in drbd_send_dblock()
1760 			drbd_csum_bio(peer_device->connection->integrity_tfm, req->master_bio, digest);  in drbd_send_dblock()
1780 int drbd_send_block(struct drbd_peer_device *peer_device, enum drbd_packet cmd,  in drbd_send_block()  argument
1783 	struct drbd_device *device = peer_device->device;  in drbd_send_block()
1789 	sock = &peer_device->connection->data;  in drbd_send_block()
1790 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_block()
1792 	digest_size = peer_device->connection->integrity_tfm ?  in drbd_send_block()
1793 		      crypto_shash_digestsize(peer_device->connection->integrity_tfm) : 0;  in drbd_send_block()
1802 		drbd_csum_ee(peer_device->connection->integrity_tfm, peer_req, p + 1);  in drbd_send_block()
1803 …err = __send_command(peer_device->connection, device->vnr, sock, cmd, sizeof(*p) + digest_size, NU…  in drbd_send_block()
1805 		err = _drbd_send_zc_ee(peer_device, peer_req);  in drbd_send_block()
1811 int drbd_send_out_of_sync(struct drbd_peer_device *peer_device, struct drbd_request *req)  in drbd_send_out_of_sync()  argument
1816 	sock = &peer_device->connection->data;  in drbd_send_out_of_sync()
1817 	p = drbd_prepare_command(peer_device, sock);  in drbd_send_out_of_sync()
1822 	return drbd_send_command(peer_device, sock, P_OUT_OF_SYNC, sizeof(*p), NULL, 0);  in drbd_send_out_of_sync()
2227 	struct drbd_peer_device *peer_device, *tmp_peer_device;  in drbd_destroy_device()  local
2262 	for_each_peer_device_safe(peer_device, tmp_peer_device, device) {  in drbd_destroy_device()
2263 		kref_put(&peer_device->connection->kref, drbd_destroy_connection);  in drbd_destroy_device()
2264 		kfree(peer_device);  in drbd_destroy_device()
2780 	struct drbd_peer_device *peer_device, *tmp_peer_device;  in drbd_create_device()  local
2865 		peer_device = kzalloc(sizeof(struct drbd_peer_device), GFP_KERNEL);  in drbd_create_device()
2866 		if (!peer_device)  in drbd_create_device()
2868 		peer_device->connection = connection;  in drbd_create_device()
2869 		peer_device->device = device;  in drbd_create_device()
2871 		list_add(&peer_device->peer_devices, &device->peer_devices);  in drbd_create_device()
2874 		id = idr_alloc(&connection->peer_devices, peer_device, vnr, vnr + 1, GFP_KERNEL);  in drbd_create_device()
2881 		INIT_WORK(&peer_device->send_acks_work, drbd_send_acks_wf);  in drbd_create_device()
2894 		for_each_peer_device(peer_device, device)  in drbd_create_device()
2895 			drbd_connected(peer_device);  in drbd_create_device()
2898 	for_each_peer_device(peer_device, device)  in drbd_create_device()
2899 		drbd_debugfs_peer_device_add(peer_device);  in drbd_create_device()
2907 		peer_device = idr_remove(&connection->peer_devices, vnr);  in drbd_create_device()
2908 		if (peer_device)  in drbd_create_device()
2911 	for_each_peer_device_safe(peer_device, tmp_peer_device, device) {  in drbd_create_device()
2912 		list_del(&peer_device->peer_devices);  in drbd_create_device()
2913 		kfree(peer_device);  in drbd_create_device()
2937 	struct drbd_peer_device *peer_device;  in drbd_delete_device()  local
2940 	for_each_peer_device(peer_device, device)  in drbd_delete_device()
2941 		drbd_debugfs_peer_device_cleanup(peer_device);  in drbd_delete_device()
3058 	struct drbd_peer_device *peer_device;  in conn_md_sync()  local
3062 	idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {  in conn_md_sync()
3063 		struct drbd_device *device = peer_device->device;  in conn_md_sync()