Lines Matching full:connection
57 static int drbd_do_features(struct drbd_connection *connection);
58 static int drbd_do_auth(struct drbd_connection *connection);
60 static void conn_wait_active_ee_empty(struct drbd_connection *connection);
121 nc = rcu_dereference(peer_device->connection->net_conf); in drbd_alloc_pages()
325 static int drbd_recv(struct drbd_connection *connection, void *buf, size_t size) in drbd_recv() argument
329 rv = drbd_recv_short(connection->data.socket, buf, size, 0); in drbd_recv()
333 drbd_info(connection, "sock was reset by peer\n"); in drbd_recv()
335 drbd_err(connection, "sock_recvmsg returned %d\n", rv); in drbd_recv()
337 if (test_bit(DISCONNECT_SENT, &connection->flags)) { in drbd_recv()
340 t = rcu_dereference(connection->net_conf)->ping_timeo * HZ/10; in drbd_recv()
343 t = wait_event_timeout(connection->ping_wait, connection->cstate < C_WF_REPORT_PARAMS, t); in drbd_recv()
348 drbd_info(connection, "sock was shut down by peer\n"); in drbd_recv()
352 conn_request_state(connection, NS(conn, C_BROKEN_PIPE), CS_HARD); in drbd_recv()
358 static int drbd_recv_all(struct drbd_connection *connection, void *buf, size_t size) in drbd_recv_all() argument
362 err = drbd_recv(connection, buf, size); in drbd_recv_all()
371 static int drbd_recv_all_warn(struct drbd_connection *connection, void *buf, size_t size) in drbd_recv_all_warn() argument
375 err = drbd_recv_all(connection, buf, size); in drbd_recv_all_warn()
377 drbd_warn(connection, "short read (expected size %d)\n", (int)size); in drbd_recv_all_warn()
400 static struct socket *drbd_try_connect(struct drbd_connection *connection) in drbd_try_connect() argument
412 nc = rcu_dereference(connection->net_conf); in drbd_try_connect()
422 my_addr_len = min_t(int, connection->my_addr_len, sizeof(src_in6)); in drbd_try_connect()
423 memcpy(&src_in6, &connection->my_addr, my_addr_len); in drbd_try_connect()
425 if (((struct sockaddr *)&connection->my_addr)->sa_family == AF_INET6) in drbd_try_connect()
430 peer_addr_len = min_t(int, connection->peer_addr_len, sizeof(src_in6)); in drbd_try_connect()
431 memcpy(&peer_in6, &connection->peer_addr, peer_addr_len); in drbd_try_connect()
479 drbd_err(connection, "%s failed, err = %d\n", what, err); in drbd_try_connect()
482 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in drbd_try_connect()
489 struct drbd_connection *connection; member
507 static int prepare_listen_socket(struct drbd_connection *connection, struct accept_wait_data *ad) in prepare_listen_socket() argument
516 nc = rcu_dereference(connection->net_conf); in prepare_listen_socket()
525 my_addr_len = min_t(int, connection->my_addr_len, sizeof(struct sockaddr_in6)); in prepare_listen_socket()
526 memcpy(&my_addr, &connection->my_addr, my_addr_len); in prepare_listen_socket()
562 drbd_err(connection, "%s failed, err = %d\n", what, err); in prepare_listen_socket()
563 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in prepare_listen_socket()
578 static struct socket *drbd_wait_for_connect(struct drbd_connection *connection, struct accept_wait_… in drbd_wait_for_connect() argument
585 nc = rcu_dereference(connection->net_conf); in drbd_wait_for_connect()
604 drbd_err(connection, "accept failed, err = %d\n", err); in drbd_wait_for_connect()
605 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in drbd_wait_for_connect()
617 static int send_first_packet(struct drbd_connection *connection, struct drbd_socket *sock, in send_first_packet() argument
620 if (!conn_prepare_command(connection, sock)) in send_first_packet()
622 return conn_send_command(connection, sock, cmd, 0, NULL, 0); in send_first_packet()
625 static int receive_first_packet(struct drbd_connection *connection, struct socket *sock) in receive_first_packet() argument
627 unsigned int header_size = drbd_header_size(connection); in receive_first_packet()
633 nc = rcu_dereference(connection->net_conf); in receive_first_packet()
641 err = drbd_recv_short(sock, connection->data.rbuf, header_size, 0); in receive_first_packet()
647 err = decode_header(connection, connection->data.rbuf, &pi); in receive_first_packet()
654 * drbd_socket_okay() - Free the socket if its connection is not okay
676 static bool connection_established(struct drbd_connection *connection, in connection_established() argument
688 nc = rcu_dereference(connection->net_conf); in connection_established()
699 /* Gets called if a connection is established, or if a new minor gets created
700 in a connection */
709 device->state_mutex = peer_device->connection->agreed_pro_version < 100 ? in drbd_connected()
710 &peer_device->connection->cstate_mutex : in drbd_connected()
729 * 1 yes, we have a valid connection
735 static int conn_connect(struct drbd_connection *connection) in conn_connect() argument
744 .connection = connection, in conn_connect()
748 clear_bit(DISCONNECT_SENT, &connection->flags); in conn_connect()
749 if (conn_request_state(connection, NS(conn, C_WF_CONNECTION), CS_VERBOSE) < SS_SUCCESS) in conn_connect()
753 sock.sbuf = connection->data.sbuf; in conn_connect()
754 sock.rbuf = connection->data.rbuf; in conn_connect()
757 msock.sbuf = connection->meta.sbuf; in conn_connect()
758 msock.rbuf = connection->meta.rbuf; in conn_connect()
762 connection->agreed_pro_version = 80; in conn_connect()
764 if (prepare_listen_socket(connection, &ad)) in conn_connect()
770 s = drbd_try_connect(connection); in conn_connect()
774 send_first_packet(connection, &sock, P_INITIAL_DATA); in conn_connect()
776 clear_bit(RESOLVE_CONFLICTS, &connection->flags); in conn_connect()
778 send_first_packet(connection, &msock, P_INITIAL_META); in conn_connect()
780 drbd_err(connection, "Logic error in conn_connect()\n"); in conn_connect()
785 if (connection_established(connection, &sock.socket, &msock.socket)) in conn_connect()
789 s = drbd_wait_for_connect(connection, &ad); in conn_connect()
791 int fp = receive_first_packet(connection, s); in conn_connect()
797 drbd_warn(connection, "initial packet S crossed\n"); in conn_connect()
805 set_bit(RESOLVE_CONFLICTS, &connection->flags); in conn_connect()
807 drbd_warn(connection, "initial packet M crossed\n"); in conn_connect()
815 drbd_warn(connection, "Error receiving initial packet\n"); in conn_connect()
823 if (connection->cstate <= C_DISCONNECTING) in conn_connect()
828 if (get_t_state(&connection->receiver) == EXITING) in conn_connect()
832 ok = connection_established(connection, &sock.socket, &msock.socket); in conn_connect()
851 * sock.socket->sk->sk_sndtimeo = connection->net_conf->timeout*HZ/10; in conn_connect()
856 nc = rcu_dereference(connection->net_conf); in conn_connect()
873 connection->data.socket = sock.socket; in conn_connect()
874 connection->meta.socket = msock.socket; in conn_connect()
875 connection->last_received = jiffies; in conn_connect()
877 h = drbd_do_features(connection); in conn_connect()
881 if (connection->cram_hmac_tfm) { in conn_connect()
883 switch (drbd_do_auth(connection)) { in conn_connect()
885 drbd_err(connection, "Authentication of peer failed\n"); in conn_connect()
888 drbd_err(connection, "Authentication of peer failed, trying again.\n"); in conn_connect()
893 connection->data.socket->sk->sk_sndtimeo = timeout; in conn_connect()
894 connection->data.socket->sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT; in conn_connect()
896 if (drbd_send_protocol(connection) == -EOPNOTSUPP) in conn_connect()
906 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) in conn_connect()
910 spin_lock_irq(&connection->resource->req_lock); in conn_connect()
911 set_bit(STATE_SENT, &connection->flags); in conn_connect()
912 spin_unlock_irq(&connection->resource->req_lock); in conn_connect()
914 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) in conn_connect()
918 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { in conn_connect()
934 rv = conn_request_state(connection, NS(conn, C_WF_REPORT_PARAMS), CS_VERBOSE); in conn_connect()
935 if (rv < SS_SUCCESS || connection->cstate != C_WF_REPORT_PARAMS) { in conn_connect()
936 clear_bit(STATE_SENT, &connection->flags); in conn_connect()
940 drbd_thread_start(&connection->ack_receiver); in conn_connect()
943 connection->ack_sender = in conn_connect()
944 alloc_ordered_workqueue("drbd_as_%s", WQ_MEM_RECLAIM, connection->resource->name); in conn_connect()
945 if (!connection->ack_sender) { in conn_connect()
946 drbd_err(connection, "Failed to create workqueue ack_sender\n"); in conn_connect()
950 mutex_lock(&connection->resource->conf_update); in conn_connect()
952 * connection attempt, the handshake of which is now well underway. in conn_connect()
955 connection->net_conf->discard_my_data = 0; in conn_connect()
956 mutex_unlock(&connection->resource->conf_update); in conn_connect()
970 static int decode_header(struct drbd_connection *connection, void *header, struct packet_info *pi) in decode_header() argument
972 unsigned int header_size = drbd_header_size(connection); in decode_header()
978 drbd_err(connection, "Header padding is not zero\n"); in decode_header()
997 drbd_err(connection, "Wrong magic value 0x%08x in protocol version %d\n", in decode_header()
999 connection->agreed_pro_version); in decode_header()
1006 static void drbd_unplug_all_devices(struct drbd_connection *connection) in drbd_unplug_all_devices() argument
1008 if (current->plug == &connection->receiver_plug) { in drbd_unplug_all_devices()
1009 blk_finish_plug(&connection->receiver_plug); in drbd_unplug_all_devices()
1010 blk_start_plug(&connection->receiver_plug); in drbd_unplug_all_devices()
1014 static int drbd_recv_header(struct drbd_connection *connection, struct packet_info *pi) in drbd_recv_header() argument
1016 void *buffer = connection->data.rbuf; in drbd_recv_header()
1019 err = drbd_recv_all_warn(connection, buffer, drbd_header_size(connection)); in drbd_recv_header()
1023 err = decode_header(connection, buffer, pi); in drbd_recv_header()
1024 connection->last_received = jiffies; in drbd_recv_header()
1029 static int drbd_recv_header_maybe_unplug(struct drbd_connection *connection, struct packet_info *pi) in drbd_recv_header_maybe_unplug() argument
1031 void *buffer = connection->data.rbuf; in drbd_recv_header_maybe_unplug()
1032 unsigned int size = drbd_header_size(connection); in drbd_recv_header_maybe_unplug()
1035 err = drbd_recv_short(connection->data.socket, buffer, size, MSG_NOSIGNAL|MSG_DONTWAIT); in drbd_recv_header_maybe_unplug()
1042 tcp_sock_set_quickack(connection->data.socket->sk, 2); in drbd_recv_header_maybe_unplug()
1043 drbd_unplug_all_devices(connection); in drbd_recv_header_maybe_unplug()
1049 err = drbd_recv_all_warn(connection, buffer, size); in drbd_recv_header_maybe_unplug()
1054 err = decode_header(connection, connection->data.rbuf, pi); in drbd_recv_header_maybe_unplug()
1055 connection->last_received = jiffies; in drbd_recv_header_maybe_unplug()
1124 static void drbd_flush(struct drbd_connection *connection) in drbd_flush() argument
1126 if (connection->resource->write_ordering >= WO_BDEV_FLUSH) { in drbd_flush()
1136 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { in drbd_flush()
1160 drbd_bump_write_ordering(connection->resource, NULL, WO_DRAIN_IO); in drbd_flush()
1167 * @connection: DRBD connection.
1171 static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connection, in drbd_may_finish_epoch() argument
1179 spin_lock(&connection->epoch_lock); in drbd_may_finish_epoch()
1201 spin_unlock(&connection->epoch_lock); in drbd_may_finish_epoch()
1202 drbd_send_b_ack(epoch->connection, epoch->barrier_nr, epoch_size); in drbd_may_finish_epoch()
1203 spin_lock(&connection->epoch_lock); in drbd_may_finish_epoch()
1206 /* FIXME: dec unacked on connection, once we have in drbd_may_finish_epoch()
1207 * something to count pending connection packets in. */ in drbd_may_finish_epoch()
1209 dec_unacked(epoch->connection); in drbd_may_finish_epoch()
1212 if (connection->current_epoch != epoch) { in drbd_may_finish_epoch()
1216 connection->epochs--; in drbd_may_finish_epoch()
1236 spin_unlock(&connection->epoch_lock); in drbd_may_finish_epoch()
1466 conn_wait_active_ee_empty(peer_req->peer_device->connection); in drbd_submit_peer_request()
1552 static void conn_wait_active_ee_empty(struct drbd_connection *connection) in conn_wait_active_ee_empty() argument
1558 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { in conn_wait_active_ee_empty()
1570 static int receive_Barrier(struct drbd_connection *connection, struct packet_info *pi) in receive_Barrier() argument
1576 /* FIXME these are unacked on connection, in receive_Barrier()
1579 connection->current_epoch->barrier_nr = p->barrier; in receive_Barrier()
1580 connection->current_epoch->connection = connection; in receive_Barrier()
1581 rv = drbd_may_finish_epoch(connection, connection->current_epoch, EV_GOT_BARRIER_NR); in receive_Barrier()
1588 switch (connection->resource->write_ordering) { in receive_Barrier()
1599 drbd_warn(connection, "Allocation of an epoch failed, slowing down\n"); in receive_Barrier()
1604 conn_wait_active_ee_empty(connection); in receive_Barrier()
1605 drbd_flush(connection); in receive_Barrier()
1607 if (atomic_read(&connection->current_epoch->epoch_size)) { in receive_Barrier()
1615 drbd_err(connection, "Strangeness in connection->write_ordering %d\n", in receive_Barrier()
1616 connection->resource->write_ordering); in receive_Barrier()
1624 spin_lock(&connection->epoch_lock); in receive_Barrier()
1625 if (atomic_read(&connection->current_epoch->epoch_size)) { in receive_Barrier()
1626 list_add(&epoch->list, &connection->current_epoch->list); in receive_Barrier()
1627 connection->current_epoch = epoch; in receive_Barrier()
1628 connection->epochs++; in receive_Barrier()
1633 spin_unlock(&connection->epoch_lock); in receive_Barrier()
1668 void *dig_in = peer_device->connection->int_dig_in; in read_in_block()
1669 void *dig_vv = peer_device->connection->int_dig_vv; in read_in_block()
1675 if (!trim && peer_device->connection->peer_integrity_tfm) { in read_in_block()
1676 digest_size = crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm); in read_in_block()
1681 err = drbd_recv_all_warn(peer_device->connection, dig_in, digest_size); in read_in_block()
1740 err = drbd_recv_all_warn(peer_device->connection, data, len); in read_in_block()
1754 drbd_csum_ee_size(peer_device->connection->peer_integrity_tfm, peer_req, dig_vv, data_size); in read_in_block()
1784 err = drbd_recv_all_warn(peer_device->connection, data, len); in drbd_drain_block()
1801 void *dig_in = peer_device->connection->int_dig_in; in recv_dless_read()
1802 void *dig_vv = peer_device->connection->int_dig_vv; in recv_dless_read()
1805 if (peer_device->connection->peer_integrity_tfm) { in recv_dless_read()
1806 digest_size = crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm); in recv_dless_read()
1807 err = drbd_recv_all_warn(peer_device->connection, dig_in, digest_size); in recv_dless_read()
1823 err = drbd_recv_all_warn(peer_device->connection, mapped, expect); in recv_dless_read()
1831 drbd_csum_bio(peer_device->connection->peer_integrity_tfm, bio, dig_vv); in recv_dless_read()
1928 static int receive_DataReply(struct drbd_connection *connection, struct packet_info *pi) in receive_DataReply() argument
1937 peer_device = conn_peer_device(connection, pi->vnr); in receive_DataReply()
1960 static int receive_RSDataReply(struct drbd_connection *connection, struct packet_info *pi) in receive_RSDataReply() argument
1968 peer_device = conn_peer_device(connection, pi->vnr); in receive_RSDataReply()
2055 …drbd_may_finish_epoch(peer_device->connection, peer_req->epoch, EV_PUT + (cancel ? EV_CLEANUP : 0)… in e_end_block()
2082 struct drbd_connection *connection = peer_req->peer_device->connection; in e_send_retry_write() local
2084 return e_send_ack(w, connection->agreed_pro_version >= 100 ? in e_send_retry_write()
2108 if (test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags)) { in update_peer_seq()
2157 * Assume we have a 10 GBit connection, that is about 1<<30 byte per second,
2171 if (!test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags)) in wait_for_and_update_peer_seq()
2187 tp = rcu_dereference(peer_device->connection->net_conf)->two_primaries; in wait_for_and_update_peer_seq()
2197 timeout = rcu_dereference(peer_device->connection->net_conf)->ping_timeo*HZ/10; in wait_for_and_update_peer_seq()
2223 static blk_opf_t wire_flags_to_bio(struct drbd_connection *connection, u32 dpf) in wire_flags_to_bio() argument
2260 struct drbd_connection *connection = peer_req->peer_device->connection; in handle_write_conflicts() local
2261 bool resolve_conflicts = test_bit(RESOLVE_CONFLICTS, &connection->flags); in handle_write_conflicts()
2317 if (!queue_work(connection->ack_sender, in handle_write_conflicts()
2348 _conn_request_state(connection, NS(conn, C_TIMEOUT), CS_HARD); in handle_write_conflicts()
2370 static int receive_Data(struct drbd_connection *connection, struct packet_info *pi) in receive_Data() argument
2382 peer_device = conn_peer_device(connection, pi->vnr); in receive_Data()
2392 atomic_inc(&connection->current_epoch->epoch_size); in receive_Data()
2417 peer_req->opf = wire_flags_to_bio(connection, dp_flags); in receive_Data()
2424 if (0 == (connection->agreed_features & DRBD_FF_WZEROES)) in receive_Data()
2441 spin_lock(&connection->epoch_lock); in receive_Data()
2442 peer_req->epoch = connection->current_epoch; in receive_Data()
2445 spin_unlock(&connection->epoch_lock); in receive_Data()
2448 nc = rcu_dereference(peer_device->connection->net_conf); in receive_Data()
2450 if (peer_device->connection->agreed_pro_version < 100) { in receive_Data()
2531 drbd_may_finish_epoch(connection, peer_req->epoch, EV_PUT | EV_CLEANUP); in receive_Data()
2618 static int receive_DataRequest(struct drbd_connection *connection, struct packet_info *pi) in receive_DataRequest() argument
2629 peer_device = conn_peer_device(connection, pi->vnr); in receive_DataRequest()
2720 if (drbd_recv_all(peer_device->connection, di->digest, pi->size)) in receive_DataRequest()
2724 D_ASSERT(device, peer_device->connection->agreed_pro_version >= 89); in receive_DataRequest()
2743 peer_device->connection->agreed_pro_version >= 90) { in receive_DataRequest()
2795 update_receiver_timing_details(connection, drbd_rs_should_slow_down); in receive_DataRequest()
2799 update_receiver_timing_details(connection, drbd_rs_begin_io); in receive_DataRequest()
2807 update_receiver_timing_details(connection, drbd_submit_peer_request); in receive_DataRequest()
2819 /* no drbd_rs_complete_io(), we are dropping the connection anyways */ in receive_DataRequest()
2843 after_sb_0p = rcu_dereference(peer_device->connection->net_conf)->after_sb_0p; in drbd_asb_recover_0p()
2879 rv = test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags) in drbd_asb_recover_0p()
2896 rv = test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags) in drbd_asb_recover_0p()
2919 after_sb_1p = rcu_dereference(peer_device->connection->net_conf)->after_sb_1p; in drbd_asb_recover_1p()
2976 after_sb_2p = rcu_dereference(peer_device->connection->net_conf)->after_sb_2p; in drbd_asb_recover_2p()
3049 struct drbd_connection *const connection = peer_device->connection; in drbd_uuid_compare() local
3076 if (connection->agreed_pro_version < 91) in drbd_uuid_compare()
3099 if (connection->agreed_pro_version < 91) in drbd_uuid_compare()
3139 if (!(connection->agreed_features & DRBD_FF_WSAME)) { in drbd_uuid_compare()
3163 dc = test_bit(RESOLVE_CONFLICTS, &connection->flags); in drbd_uuid_compare()
3176 if (connection->agreed_pro_version < 96 ? in drbd_uuid_compare()
3183 if (connection->agreed_pro_version < 91) in drbd_uuid_compare()
3213 if (connection->agreed_pro_version < 96 ? in drbd_uuid_compare()
3220 if (connection->agreed_pro_version < 91) in drbd_uuid_compare()
3323 nc = rcu_dereference(peer_device->connection->net_conf); in drbd_sync_handshake()
3372 * We just refuse to attach -- well, we drop the "connection" in drbd_sync_handshake()
3374 drbd_alert(device, "Split-Brain detected but unresolved, dropping connection!\n"); in drbd_sync_handshake()
3399 if (tentative || test_bit(CONN_DRY_RUN, &peer_device->connection->flags)) { in drbd_sync_handshake()
3445 static int receive_protocol(struct drbd_connection *connection, struct packet_info *pi) in receive_protocol() argument
3463 if (connection->agreed_pro_version >= 87) { in receive_protocol()
3468 err = drbd_recv_all(connection, integrity_alg, pi->size); in receive_protocol()
3475 clear_bit(CONN_DRY_RUN, &connection->flags); in receive_protocol()
3478 set_bit(CONN_DRY_RUN, &connection->flags); in receive_protocol()
3481 nc = rcu_dereference(connection->net_conf); in receive_protocol()
3484 drbd_err(connection, "incompatible %s settings\n", "protocol"); in receive_protocol()
3489 drbd_err(connection, "incompatible %s settings\n", "after-sb-0pri"); in receive_protocol()
3494 drbd_err(connection, "incompatible %s settings\n", "after-sb-1pri"); in receive_protocol()
3499 drbd_err(connection, "incompatible %s settings\n", "after-sb-2pri"); in receive_protocol()
3504 drbd_err(connection, "incompatible %s settings\n", "discard-my-data"); in receive_protocol()
3509 drbd_err(connection, "incompatible %s settings\n", "allow-two-primaries"); in receive_protocol()
3514 drbd_err(connection, "incompatible %s settings\n", "data-integrity-alg"); in receive_protocol()
3536 drbd_err(connection, "peer data-integrity-alg %s not supported\n", in receive_protocol()
3545 drbd_err(connection, "Allocation of buffers for data integrity checking failed\n"); in receive_protocol()
3554 mutex_lock(&connection->data.mutex); in receive_protocol()
3555 mutex_lock(&connection->resource->conf_update); in receive_protocol()
3556 old_net_conf = connection->net_conf; in receive_protocol()
3565 rcu_assign_pointer(connection->net_conf, new_net_conf); in receive_protocol()
3566 mutex_unlock(&connection->resource->conf_update); in receive_protocol()
3567 mutex_unlock(&connection->data.mutex); in receive_protocol()
3569 crypto_free_shash(connection->peer_integrity_tfm); in receive_protocol()
3570 kfree(connection->int_dig_in); in receive_protocol()
3571 kfree(connection->int_dig_vv); in receive_protocol()
3572 connection->peer_integrity_tfm = peer_integrity_tfm; in receive_protocol()
3573 connection->int_dig_in = int_dig_in; in receive_protocol()
3574 connection->int_dig_vv = int_dig_vv; in receive_protocol()
3577 drbd_info(connection, "peer data-integrity-alg: %s\n", in receive_protocol()
3589 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_protocol()
3616 static int ignore_remaining_packet(struct drbd_connection *connection, struct packet_info *pi) in ignore_remaining_packet() argument
3618 void *buffer = connection->data.rbuf; in ignore_remaining_packet()
3623 s = drbd_recv(connection, buffer, s); in ignore_remaining_packet()
3639 * When a device is added to an existing connection, the node on which the
3647 static int config_unknown_volume(struct drbd_connection *connection, struct packet_info *pi) in config_unknown_volume() argument
3649 drbd_warn(connection, "%s packet received for volume %u, which is not configured locally\n", in config_unknown_volume()
3651 return ignore_remaining_packet(connection, pi); in config_unknown_volume()
3654 static int receive_SyncParam(struct drbd_connection *connection, struct packet_info *pi) in receive_SyncParam() argument
3664 const int apv = connection->agreed_pro_version; in receive_SyncParam()
3669 peer_device = conn_peer_device(connection, pi->vnr); in receive_SyncParam()
3671 return config_unknown_volume(connection, pi); in receive_SyncParam()
3704 err = drbd_recv_all(peer_device->connection, p, header_size); in receive_SyncParam()
3708 mutex_lock(&connection->resource->conf_update); in receive_SyncParam()
3709 old_net_conf = peer_device->connection->net_conf; in receive_SyncParam()
3714 mutex_unlock(&connection->resource->conf_update); in receive_SyncParam()
3734 err = drbd_recv_all(peer_device->connection, p->verify_alg, data_size); in receive_SyncParam()
3806 crypto_free_shash(peer_device->connection->verify_tfm); in receive_SyncParam()
3807 peer_device->connection->verify_tfm = verify_tfm; in receive_SyncParam()
3813 crypto_free_shash(peer_device->connection->csums_tfm); in receive_SyncParam()
3814 peer_device->connection->csums_tfm = csums_tfm; in receive_SyncParam()
3817 rcu_assign_pointer(connection->net_conf, new_net_conf); in receive_SyncParam()
3831 mutex_unlock(&connection->resource->conf_update); in receive_SyncParam()
3845 mutex_unlock(&connection->resource->conf_update); in receive_SyncParam()
3854 mutex_unlock(&connection->resource->conf_update); in receive_SyncParam()
3860 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_SyncParam()
3877 static int receive_sizes(struct drbd_connection *connection, struct packet_info *pi) in receive_sizes() argument
3882 struct o_qlim *o = (connection->agreed_features & DRBD_FF_WSAME) ? p->qlim : NULL; in receive_sizes()
3889 peer_device = conn_peer_device(connection, pi->vnr); in receive_sizes()
3891 return config_unknown_volume(connection, pi); in receive_sizes()
3927 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_sizes()
3941 mutex_lock(&connection->resource->conf_update); in receive_sizes()
3947 mutex_unlock(&connection->resource->conf_update); in receive_sizes()
4000 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_sizes()
4048 static int receive_uuids(struct drbd_connection *connection, struct packet_info *pi) in receive_uuids() argument
4056 peer_device = conn_peer_device(connection, pi->vnr); in receive_uuids()
4058 return config_unknown_volume(connection, pi); in receive_uuids()
4077 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_uuids()
4084 peer_device->connection->agreed_pro_version >= 90 && in receive_uuids()
4153 static int receive_req_state(struct drbd_connection *connection, struct packet_info *pi) in receive_req_state() argument
4161 peer_device = conn_peer_device(connection, pi->vnr); in receive_req_state()
4169 if (test_bit(RESOLVE_CONFLICTS, &peer_device->connection->flags) && in receive_req_state()
4186 static int receive_req_conn_state(struct drbd_connection *connection, struct packet_info *pi) in receive_req_conn_state() argument
4195 if (test_bit(RESOLVE_CONFLICTS, &connection->flags) && in receive_req_conn_state()
4196 mutex_is_locked(&connection->cstate_mutex)) { in receive_req_conn_state()
4197 conn_send_sr_reply(connection, SS_CONCURRENT_ST_CHG); in receive_req_conn_state()
4204 rv = conn_request_state(connection, mask, val, CS_VERBOSE | CS_LOCAL_ONLY | CS_IGN_OUTD_FAIL); in receive_req_conn_state()
4205 conn_send_sr_reply(connection, rv); in receive_req_conn_state()
4210 static int receive_state(struct drbd_connection *connection, struct packet_info *pi) in receive_state() argument
4220 peer_device = conn_peer_device(connection, pi->vnr); in receive_state()
4222 return config_unknown_volume(connection, pi); in receive_state()
4239 * already decided to close the connection again, in receive_state()
4307 * In this scenario, we already dropped the connection hard in receive_state()
4310 * Should we want to change this, that is: not drop the connection in in receive_state()
4320 /* if we established a new connection */ in receive_state()
4322 /* if we had an established connection in receive_state()
4349 if (test_and_clear_bit(CONN_DRY_RUN, &peer_device->connection->flags)) in receive_state()
4352 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_state()
4374 tl_clear(peer_device->connection); in receive_state()
4377 conn_request_state(peer_device->connection, NS2(conn, C_PROTOCOL_ERROR, susp, 0), CS_HARD); in receive_state()
4385 conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD); in receive_state()
4407 static int receive_sync_uuid(struct drbd_connection *connection, struct packet_info *pi) in receive_sync_uuid() argument
4413 peer_device = conn_peer_device(connection, pi->vnr); in receive_sync_uuid()
4453 drbd_header_size(peer_device->connection); in receive_bitmap_plain()
4465 err = drbd_recv_all(peer_device->connection, p, want); in receive_bitmap_plain()
4583 conn_request_state(peer_device->connection, NS(conn, C_PROTOCOL_ERROR), CS_HARD); in decode_bitmap_c()
4591 unsigned int header_size = drbd_header_size(peer_device->connection); in INFO_bm_xfer_stats()
4631 static int receive_bitmap(struct drbd_connection *connection, struct packet_info *pi) in receive_bitmap() argument
4638 peer_device = conn_peer_device(connection, pi->vnr); in receive_bitmap()
4660 if (pi->size > DRBD_SOCKET_BUFFER_SIZE - drbd_header_size(connection)) { in receive_bitmap()
4670 err = drbd_recv_all(peer_device->connection, p, pi->size); in receive_bitmap()
4681 c.bytes[pi->cmd == P_BITMAP] += drbd_header_size(connection) + pi->size; in receive_bitmap()
4688 err = drbd_recv_header(peer_device->connection, pi); in receive_bitmap()
4719 static int receive_skip(struct drbd_connection *connection, struct packet_info *pi) in receive_skip() argument
4721 drbd_warn(connection, "skipping unknown optional packet type %d, l: %d!\n", in receive_skip()
4724 return ignore_remaining_packet(connection, pi); in receive_skip()
4727 static int receive_UnplugRemote(struct drbd_connection *connection, struct packet_info *pi) in receive_UnplugRemote() argument
4731 tcp_sock_set_quickack(connection->data.socket->sk, 2); in receive_UnplugRemote()
4735 static int receive_out_of_sync(struct drbd_connection *connection, struct packet_info *pi) in receive_out_of_sync() argument
4741 peer_device = conn_peer_device(connection, pi->vnr); in receive_out_of_sync()
4761 static int receive_rs_deallocated(struct drbd_connection *connection, struct packet_info *pi) in receive_rs_deallocated() argument
4769 peer_device = conn_peer_device(connection, pi->vnr); in receive_rs_deallocated()
4864 static void drbdd(struct drbd_connection *connection) in drbdd() argument
4870 while (get_t_state(&connection->receiver) == RUNNING) { in drbdd()
4873 drbd_thread_current_set_cpu(&connection->receiver); in drbdd()
4874 update_receiver_timing_details(connection, drbd_recv_header_maybe_unplug); in drbdd()
4875 if (drbd_recv_header_maybe_unplug(connection, &pi)) in drbdd()
4880 drbd_err(connection, "Unexpected data packet %s (0x%04x)", in drbdd()
4886 if (pi.cmd == P_SIZES && connection->agreed_features & DRBD_FF_WSAME) in drbdd()
4889 drbd_err(connection, "No payload expected %s l:%d\n", in drbdd()
4894 drbd_err(connection, "%s: unexpected packet size, expected:%d received:%d\n", in drbdd()
4900 update_receiver_timing_details(connection, drbd_recv_all_warn); in drbdd()
4901 err = drbd_recv_all_warn(connection, pi.data, shs); in drbdd()
4907 update_receiver_timing_details(connection, cmd->fn); in drbdd()
4908 err = cmd->fn(connection, &pi); in drbdd()
4910 drbd_err(connection, "error receiving %s, e: %d l: %d!\n", in drbdd()
4918 conn_request_state(connection, NS(conn, C_PROTOCOL_ERROR), CS_HARD); in drbdd()
4921 static void conn_disconnect(struct drbd_connection *connection) in conn_disconnect() argument
4927 if (connection->cstate == C_STANDALONE) in conn_disconnect()
4930 /* We are about to start the cleanup after connection loss. in conn_disconnect()
4935 conn_request_state(connection, NS(conn, C_NETWORK_FAILURE), CS_HARD); in conn_disconnect()
4938 drbd_thread_stop(&connection->ack_receiver); in conn_disconnect()
4939 if (connection->ack_sender) { in conn_disconnect()
4940 destroy_workqueue(connection->ack_sender); in conn_disconnect()
4941 connection->ack_sender = NULL; in conn_disconnect()
4943 drbd_free_sock(connection); in conn_disconnect()
4946 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { in conn_disconnect()
4956 if (!list_empty(&connection->current_epoch->list)) in conn_disconnect()
4957 drbd_err(connection, "ASSERTION FAILED: connection->current_epoch->list not empty\n"); in conn_disconnect()
4959 atomic_set(&connection->current_epoch->epoch_size, 0); in conn_disconnect()
4960 connection->send.seen_any_write_yet = false; in conn_disconnect()
4962 drbd_info(connection, "Connection closed\n"); in conn_disconnect()
4964 if (conn_highest_role(connection) == R_PRIMARY && conn_highest_pdsk(connection) >= D_UNKNOWN) in conn_disconnect()
4965 conn_try_outdate_peer_async(connection); in conn_disconnect()
4967 spin_lock_irq(&connection->resource->req_lock); in conn_disconnect()
4968 oc = connection->cstate; in conn_disconnect()
4970 _conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE); in conn_disconnect()
4972 spin_unlock_irq(&connection->resource->req_lock); in conn_disconnect()
4975 conn_request_state(connection, NS(conn, C_STANDALONE), CS_VERBOSE | CS_HARD); in conn_disconnect()
5012 drbd_flush_workqueue(&peer_device->connection->sender_work); in drbd_disconnected()
5019 drbd_flush_workqueue(&peer_device->connection->sender_work); in drbd_disconnected()
5029 tl_clear(peer_device->connection); in drbd_disconnected()
5063 static int drbd_send_features(struct drbd_connection *connection) in drbd_send_features() argument
5068 sock = &connection->data; in drbd_send_features()
5069 p = conn_prepare_command(connection, sock); in drbd_send_features()
5076 return conn_send_command(connection, sock, P_CONNECTION_FEATURES, sizeof(*p), NULL, 0); in drbd_send_features()
5081 * 1 yes, we have a valid connection
5086 static int drbd_do_features(struct drbd_connection *connection) in drbd_do_features() argument
5088 /* ASSERT current == connection->receiver ... */ in drbd_do_features()
5094 err = drbd_send_features(connection); in drbd_do_features()
5098 err = drbd_recv_header(connection, &pi); in drbd_do_features()
5103 drbd_err(connection, "expected ConnectionFeatures packet, received: %s (0x%04x)\n", in drbd_do_features()
5109 drbd_err(connection, "expected ConnectionFeatures length: %u, received: %u\n", in drbd_do_features()
5115 err = drbd_recv_all_warn(connection, p, expect); in drbd_do_features()
5128 connection->agreed_pro_version = min_t(int, PRO_VERSION_MAX, p->protocol_max); in drbd_do_features()
5129 connection->agreed_features = PRO_FEATURES & be32_to_cpu(p->feature_flags); in drbd_do_features()
5131 drbd_info(connection, "Handshake successful: " in drbd_do_features()
5132 "Agreed network protocol version %d\n", connection->agreed_pro_version); in drbd_do_features()
5134 drbd_info(connection, "Feature flags enabled on protocol level: 0x%x%s%s%s%s.\n", in drbd_do_features()
5135 connection->agreed_features, in drbd_do_features()
5136 connection->agreed_features & DRBD_FF_TRIM ? " TRIM" : "", in drbd_do_features()
5137 connection->agreed_features & DRBD_FF_THIN_RESYNC ? " THIN_RESYNC" : "", in drbd_do_features()
5138 connection->agreed_features & DRBD_FF_WSAME ? " WRITE_SAME" : "", in drbd_do_features()
5139 connection->agreed_features & DRBD_FF_WZEROES ? " WRITE_ZEROES" : in drbd_do_features()
5140 connection->agreed_features ? "" : " none"); in drbd_do_features()
5145 drbd_err(connection, "incompatible DRBD dialects: " in drbd_do_features()
5153 static int drbd_do_auth(struct drbd_connection *connection) in drbd_do_auth() argument
5155 drbd_err(connection, "This kernel was build without CONFIG_CRYPTO_HMAC.\n"); in drbd_do_auth()
5156 drbd_err(connection, "You need to disable 'cram-hmac-alg' in drbd.conf.\n"); in drbd_do_auth()
5168 static int drbd_do_auth(struct drbd_connection *connection) in drbd_do_auth() argument
5186 nc = rcu_dereference(connection->net_conf); in drbd_do_auth()
5192 crypto_shash_descsize(connection->cram_hmac_tfm), in drbd_do_auth()
5198 desc->tfm = connection->cram_hmac_tfm; in drbd_do_auth()
5200 rv = crypto_shash_setkey(connection->cram_hmac_tfm, (u8 *)secret, key_len); in drbd_do_auth()
5202 drbd_err(connection, "crypto_shash_setkey() failed with %d\n", rv); in drbd_do_auth()
5209 sock = &connection->data; in drbd_do_auth()
5210 if (!conn_prepare_command(connection, sock)) { in drbd_do_auth()
5214 rv = !conn_send_command(connection, sock, P_AUTH_CHALLENGE, 0, in drbd_do_auth()
5219 err = drbd_recv_header(connection, &pi); in drbd_do_auth()
5226 drbd_err(connection, "expected AuthChallenge packet, received: %s (0x%04x)\n", in drbd_do_auth()
5233 drbd_err(connection, "expected AuthChallenge payload too big.\n"); in drbd_do_auth()
5239 drbd_err(connection, "AuthChallenge payload too small.\n"); in drbd_do_auth()
5250 err = drbd_recv_all_warn(connection, peers_ch, pi.size); in drbd_do_auth()
5257 drbd_err(connection, "Peer presented the same challenge!\n"); in drbd_do_auth()
5262 resp_size = crypto_shash_digestsize(connection->cram_hmac_tfm); in drbd_do_auth()
5271 drbd_err(connection, "crypto_hash_digest() failed with %d\n", rv); in drbd_do_auth()
5276 if (!conn_prepare_command(connection, sock)) { in drbd_do_auth()
5280 rv = !conn_send_command(connection, sock, P_AUTH_RESPONSE, 0, in drbd_do_auth()
5285 err = drbd_recv_header(connection, &pi); in drbd_do_auth()
5292 drbd_err(connection, "expected AuthResponse packet, received: %s (0x%04x)\n", in drbd_do_auth()
5299 drbd_err(connection, "expected AuthResponse payload of wrong size\n"); in drbd_do_auth()
5304 err = drbd_recv_all_warn(connection, response , resp_size); in drbd_do_auth()
5319 drbd_err(connection, "crypto_hash_digest() failed with %d\n", rv); in drbd_do_auth()
5327 drbd_info(connection, "Peer authenticated using %d bytes HMAC\n", in drbd_do_auth()
5347 struct drbd_connection *connection = thi->connection; in drbd_receiver() local
5350 drbd_info(connection, "receiver (re)started\n"); in drbd_receiver()
5353 h = conn_connect(connection); in drbd_receiver()
5355 conn_disconnect(connection); in drbd_receiver()
5359 drbd_warn(connection, "Discarding network configuration.\n"); in drbd_receiver()
5360 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in drbd_receiver()
5365 blk_start_plug(&connection->receiver_plug); in drbd_receiver()
5366 drbdd(connection); in drbd_receiver()
5367 blk_finish_plug(&connection->receiver_plug); in drbd_receiver()
5370 conn_disconnect(connection); in drbd_receiver()
5372 drbd_info(connection, "receiver terminated\n"); in drbd_receiver()
5378 static int got_conn_RqSReply(struct drbd_connection *connection, struct packet_info *pi) in got_conn_RqSReply() argument
5384 set_bit(CONN_WD_ST_CHG_OKAY, &connection->flags); in got_conn_RqSReply()
5386 set_bit(CONN_WD_ST_CHG_FAIL, &connection->flags); in got_conn_RqSReply()
5387 drbd_err(connection, "Requested state change failed by peer: %s (%d)\n", in got_conn_RqSReply()
5390 wake_up(&connection->ping_wait); in got_conn_RqSReply()
5395 static int got_RqSReply(struct drbd_connection *connection, struct packet_info *pi) in got_RqSReply() argument
5402 peer_device = conn_peer_device(connection, pi->vnr); in got_RqSReply()
5407 if (test_bit(CONN_WD_ST_CHG_REQ, &connection->flags)) { in got_RqSReply()
5408 D_ASSERT(device, connection->agreed_pro_version < 100); in got_RqSReply()
5409 return got_conn_RqSReply(connection, pi); in got_RqSReply()
5424 static int got_Ping(struct drbd_connection *connection, struct packet_info *pi) in got_Ping() argument
5426 return drbd_send_ping_ack(connection); in got_Ping()
5430 static int got_PingAck(struct drbd_connection *connection, struct packet_info *pi) in got_PingAck() argument
5433 connection->meta.socket->sk->sk_rcvtimeo = connection->net_conf->ping_int*HZ; in got_PingAck()
5434 if (!test_and_set_bit(GOT_PING_ACK, &connection->flags)) in got_PingAck()
5435 wake_up(&connection->ping_wait); in got_PingAck()
5440 static int got_IsInSync(struct drbd_connection *connection, struct packet_info *pi) in got_IsInSync() argument
5448 peer_device = conn_peer_device(connection, pi->vnr); in got_IsInSync()
5453 D_ASSERT(device, peer_device->connection->agreed_pro_version >= 89); in got_IsInSync()
5493 static int got_BlockAck(struct drbd_connection *connection, struct packet_info *pi) in got_BlockAck() argument
5502 peer_device = conn_peer_device(connection, pi->vnr); in got_BlockAck()
5539 static int got_NegAck(struct drbd_connection *connection, struct packet_info *pi) in got_NegAck() argument
5548 peer_device = conn_peer_device(connection, pi->vnr); in got_NegAck()
5575 static int got_NegDReply(struct drbd_connection *connection, struct packet_info *pi) in got_NegDReply() argument
5582 peer_device = conn_peer_device(connection, pi->vnr); in got_NegDReply()
5597 static int got_NegRSDReply(struct drbd_connection *connection, struct packet_info *pi) in got_NegRSDReply() argument
5605 peer_device = conn_peer_device(connection, pi->vnr); in got_NegRSDReply()
5634 static int got_BarrierAck(struct drbd_connection *connection, struct packet_info *pi) in got_BarrierAck() argument
5640 tl_release(connection, p->barrier, be32_to_cpu(p->set_size)); in got_BarrierAck()
5643 idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { in got_BarrierAck()
5658 static int got_OVResult(struct drbd_connection *connection, struct packet_info *pi) in got_OVResult() argument
5667 peer_device = conn_peer_device(connection, pi->vnr); in got_OVResult()
5699 drbd_queue_work(&peer_device->connection->sender_work, &dw->w); in got_OVResult()
5710 static int got_skip(struct drbd_connection *connection, struct packet_info *pi) in got_skip() argument
5717 int (*fn)(struct drbd_connection *connection, struct packet_info *);
5720 static void set_rcvtimeo(struct drbd_connection *connection, bool ping_timeout) in set_rcvtimeo() argument
5726 nc = rcu_dereference(connection->net_conf); in set_rcvtimeo()
5734 connection->meta.socket->sk->sk_rcvtimeo = t; in set_rcvtimeo()
5737 static void set_ping_timeout(struct drbd_connection *connection) in set_ping_timeout() argument
5739 set_rcvtimeo(connection, 1); in set_ping_timeout()
5742 static void set_idle_timeout(struct drbd_connection *connection) in set_idle_timeout() argument
5744 set_rcvtimeo(connection, 0); in set_idle_timeout()
5769 struct drbd_connection *connection = thi->connection; in drbd_ack_receiver() local
5774 void *buf = connection->meta.rbuf; in drbd_ack_receiver()
5776 unsigned int header_size = drbd_header_size(connection); in drbd_ack_receiver()
5785 if (test_and_clear_bit(SEND_PING, &connection->flags)) { in drbd_ack_receiver()
5786 if (drbd_send_ping(connection)) { in drbd_ack_receiver()
5787 drbd_err(connection, "drbd_send_ping has failed\n"); in drbd_ack_receiver()
5790 set_ping_timeout(connection); in drbd_ack_receiver()
5795 rv = drbd_recv_short(connection->meta.socket, buf, expect-received, 0); in drbd_ack_receiver()
5800 * -ECONNRESET other side closed the connection in drbd_ack_receiver()
5805 * rv == 0 : "connection shut down by peer" in drbd_ack_receiver()
5811 if (test_bit(DISCONNECT_SENT, &connection->flags)) { in drbd_ack_receiver()
5814 t = rcu_dereference(connection->net_conf)->ping_timeo * HZ/10; in drbd_ack_receiver()
5817 t = wait_event_timeout(connection->ping_wait, in drbd_ack_receiver()
5818 connection->cstate < C_WF_REPORT_PARAMS, in drbd_ack_receiver()
5823 drbd_err(connection, "meta connection shut down by peer.\n"); in drbd_ack_receiver()
5828 if (time_after(connection->last_received, pre_recv_jif)) in drbd_ack_receiver()
5831 drbd_err(connection, "PingAck did not arrive in time.\n"); in drbd_ack_receiver()
5834 set_bit(SEND_PING, &connection->flags); in drbd_ack_receiver()
5843 drbd_err(connection, "sock_recvmsg returned %d\n", rv); in drbd_ack_receiver()
5848 if (decode_header(connection, connection->meta.rbuf, &pi)) in drbd_ack_receiver()
5852 drbd_err(connection, "Unexpected meta packet %s (0x%04x)\n", in drbd_ack_receiver()
5858 drbd_err(connection, "Wrong packet size on meta (c: %d, l: %d)\n", in drbd_ack_receiver()
5866 err = cmd->fn(connection, &pi); in drbd_ack_receiver()
5868 drbd_err(connection, "%ps failed\n", cmd->fn); in drbd_ack_receiver()
5872 connection->last_received = jiffies; in drbd_ack_receiver()
5875 set_idle_timeout(connection); in drbd_ack_receiver()
5879 buf = connection->meta.rbuf; in drbd_ack_receiver()
5888 conn_request_state(connection, NS(conn, C_NETWORK_FAILURE), CS_HARD); in drbd_ack_receiver()
5889 conn_md_sync(connection); in drbd_ack_receiver()
5893 conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD); in drbd_ack_receiver()
5896 drbd_info(connection, "ack_receiver terminated\n"); in drbd_ack_receiver()
5905 struct drbd_connection *connection = peer_device->connection; in drbd_send_acks_wf() local
5911 nc = rcu_dereference(connection->net_conf); in drbd_send_acks_wf()
5916 tcp_sock_set_cork(connection->meta.socket->sk, true); in drbd_send_acks_wf()
5924 conn_request_state(connection, NS(conn, C_NETWORK_FAILURE), CS_HARD); in drbd_send_acks_wf()
5929 tcp_sock_set_cork(connection->meta.socket->sk, false); in drbd_send_acks_wf()