Lines Matching full:call
30 /* asynchronous incoming call initial processing */
126 * Allocate a call.
132 struct afs_call *call; in afs_alloc_call() local
135 call = kzalloc(sizeof(*call), gfp); in afs_alloc_call()
136 if (!call) in afs_alloc_call()
139 call->type = type; in afs_alloc_call()
140 call->net = net; in afs_alloc_call()
141 call->debug_id = atomic_inc_return(&rxrpc_debug_id); in afs_alloc_call()
142 atomic_set(&call->usage, 1); in afs_alloc_call()
143 INIT_WORK(&call->async_work, afs_process_async_call); in afs_alloc_call()
144 init_waitqueue_head(&call->waitq); in afs_alloc_call()
145 spin_lock_init(&call->state_lock); in afs_alloc_call()
148 trace_afs_call(call, afs_call_trace_alloc, 1, o, in afs_alloc_call()
150 return call; in afs_alloc_call()
154 * Dispose of a reference on a call.
156 void afs_put_call(struct afs_call *call) in afs_put_call() argument
158 struct afs_net *net = call->net; in afs_put_call()
159 int n = atomic_dec_return(&call->usage); in afs_put_call()
162 trace_afs_call(call, afs_call_trace_put, n, o, in afs_put_call()
167 ASSERT(!work_pending(&call->async_work)); in afs_put_call()
168 ASSERT(call->type->name != NULL); in afs_put_call()
170 if (call->rxcall) { in afs_put_call()
171 rxrpc_kernel_end_call(net->socket, call->rxcall); in afs_put_call()
172 call->rxcall = NULL; in afs_put_call()
174 if (call->type->destructor) in afs_put_call()
175 call->type->destructor(call); in afs_put_call()
177 afs_put_server(call->net, call->cm_server); in afs_put_call()
178 afs_put_cb_interest(call->net, call->cbi); in afs_put_call()
179 kfree(call->request); in afs_put_call()
181 trace_afs_call(call, afs_call_trace_free, 0, o, in afs_put_call()
183 kfree(call); in afs_put_call()
192 * Queue the call for actual work. Returns 0 unconditionally for convenience.
194 int afs_queue_call_work(struct afs_call *call) in afs_queue_call_work() argument
196 int u = atomic_inc_return(&call->usage); in afs_queue_call_work()
198 trace_afs_call(call, afs_call_trace_work, u, in afs_queue_call_work()
199 atomic_read(&call->net->nr_outstanding_calls), in afs_queue_call_work()
202 INIT_WORK(&call->work, call->type->work); in afs_queue_call_work()
204 if (!queue_work(afs_wq, &call->work)) in afs_queue_call_work()
205 afs_put_call(call); in afs_queue_call_work()
210 * allocate a call with flat request and reply buffers
216 struct afs_call *call; in afs_alloc_flat_call() local
218 call = afs_alloc_call(net, type, GFP_NOFS); in afs_alloc_flat_call()
219 if (!call) in afs_alloc_flat_call()
223 call->request_size = request_size; in afs_alloc_flat_call()
224 call->request = kmalloc(request_size, GFP_NOFS); in afs_alloc_flat_call()
225 if (!call->request) in afs_alloc_flat_call()
230 call->reply_max = reply_max; in afs_alloc_flat_call()
231 call->buffer = kmalloc(reply_max, GFP_NOFS); in afs_alloc_flat_call()
232 if (!call->buffer) in afs_alloc_flat_call()
236 call->operation_ID = type->op; in afs_alloc_flat_call()
237 init_waitqueue_head(&call->waitq); in afs_alloc_flat_call()
238 return call; in afs_alloc_flat_call()
241 afs_put_call(call); in afs_alloc_flat_call()
247 * clean up a call with flat buffer
249 void afs_flat_call_destructor(struct afs_call *call) in afs_flat_call_destructor() argument
253 kfree(call->request); in afs_flat_call_destructor()
254 call->request = NULL; in afs_flat_call_destructor()
255 kfree(call->buffer); in afs_flat_call_destructor()
256 call->buffer = NULL; in afs_flat_call_destructor()
264 static void afs_load_bvec(struct afs_call *call, struct msghdr *msg, in afs_load_bvec() argument
272 n = find_get_pages_contig(call->mapping, first, nr, pages); in afs_load_bvec()
279 to = call->last_to; in afs_load_bvec()
293 * Advance the AFS call state when the RxRPC call ends the transmit phase.
299 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_notify_end_request_tx() local
301 afs_set_call_state(call, AFS_CALL_CL_REQUESTING, AFS_CALL_CL_AWAIT_REPLY); in afs_notify_end_request_tx()
305 * attach the data from a bunch of pages on an inode to a call
307 static int afs_send_pages(struct afs_call *call, struct msghdr *msg) in afs_send_pages() argument
311 pgoff_t first = call->first, last = call->last; in afs_send_pages()
314 offset = call->first_offset; in afs_send_pages()
315 call->first_offset = 0; in afs_send_pages()
318 afs_load_bvec(call, msg, bv, first, last, offset); in afs_send_pages()
319 trace_afs_send_pages(call, msg, first, last, offset); in afs_send_pages()
325 ret = rxrpc_kernel_send_data(call->net->socket, call->rxcall, msg, in afs_send_pages()
335 trace_afs_sent_pages(call, call->first, last, first, ret); in afs_send_pages()
340 * initiate a call
342 long afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, in afs_make_call() argument
354 ASSERT(call->type != NULL); in afs_make_call()
355 ASSERT(call->type->name != NULL); in afs_make_call()
358 call, call->type->name, key_serial(call->key), in afs_make_call()
359 atomic_read(&call->net->nr_outstanding_calls)); in afs_make_call()
361 call->async = async; in afs_make_call()
367 tx_total_len = call->request_size; in afs_make_call()
368 if (call->send_pages) { in afs_make_call()
369 if (call->last == call->first) { in afs_make_call()
370 tx_total_len += call->last_to - call->first_offset; in afs_make_call()
376 tx_total_len += PAGE_SIZE - call->first_offset; in afs_make_call()
377 tx_total_len += call->last_to; in afs_make_call()
378 tx_total_len += (call->last - call->first - 1) * PAGE_SIZE; in afs_make_call()
382 /* create a call */ in afs_make_call()
383 rxcall = rxrpc_kernel_begin_call(call->net->socket, srx, call->key, in afs_make_call()
384 (unsigned long)call, in afs_make_call()
389 call->upgrade, in afs_make_call()
390 call->debug_id); in afs_make_call()
396 call->rxcall = rxcall; in afs_make_call()
399 iov[0].iov_base = call->request; in afs_make_call()
400 iov[0].iov_len = call->request_size; in afs_make_call()
405 call->request_size); in afs_make_call()
408 msg.msg_flags = MSG_WAITALL | (call->send_pages ? MSG_MORE : 0); in afs_make_call()
410 ret = rxrpc_kernel_send_data(call->net->socket, rxcall, in afs_make_call()
411 &msg, call->request_size, in afs_make_call()
416 if (call->send_pages) { in afs_make_call()
417 ret = afs_send_pages(call, &msg); in afs_make_call()
422 /* at this point, an async call may no longer exist as it may have in afs_make_call()
424 if (call->async) in afs_make_call()
427 return afs_wait_for_call_to_complete(call, ac); in afs_make_call()
430 call->state = AFS_CALL_COMPLETE; in afs_make_call()
432 rxrpc_kernel_abort_call(call->net->socket, rxcall, in afs_make_call()
436 rxrpc_kernel_recv_data(call->net->socket, rxcall, in afs_make_call()
438 &call->abort_code, &call->service_id); in afs_make_call()
439 ac->abort_code = call->abort_code; in afs_make_call()
442 call->error = ret; in afs_make_call()
443 trace_afs_call_done(call); in afs_make_call()
445 afs_put_call(call); in afs_make_call()
452 * deliver messages to a call
454 static void afs_deliver_to_call(struct afs_call *call) in afs_deliver_to_call() argument
460 _enter("%s", call->type->name); in afs_deliver_to_call()
462 while (state = READ_ONCE(call->state), in afs_deliver_to_call()
472 ret = rxrpc_kernel_recv_data(call->net->socket, in afs_deliver_to_call()
473 call->rxcall, &iter, false, in afs_deliver_to_call()
475 &call->service_id); in afs_deliver_to_call()
476 trace_afs_recv_data(call, 0, 0, false, ret); in afs_deliver_to_call()
488 ret = call->type->deliver(call); in afs_deliver_to_call()
489 state = READ_ONCE(call->state); in afs_deliver_to_call()
493 if (call->cbi) in afs_deliver_to_call()
495 &call->cbi->server->flags); in afs_deliver_to_call()
508 rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_deliver_to_call()
512 pr_err("kAFS: Call %u in bad state %u\n", in afs_deliver_to_call()
513 call->debug_id, state); in afs_deliver_to_call()
522 rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_deliver_to_call()
529 if (state == AFS_CALL_COMPLETE && call->incoming) in afs_deliver_to_call()
530 afs_put_call(call); in afs_deliver_to_call()
538 afs_set_call_complete(call, ret, remote_abort); in afs_deliver_to_call()
544 * wait synchronously for a call to complete
546 static long afs_wait_for_call_to_complete(struct afs_call *call, in afs_wait_for_call_to_complete() argument
558 rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall); in afs_wait_for_call_to_complete()
564 last_life = rxrpc_kernel_check_life(call->net->socket, call->rxcall); in afs_wait_for_call_to_complete()
566 add_wait_queue(&call->waitq, &myself); in afs_wait_for_call_to_complete()
571 if (!afs_check_call_state(call, AFS_CALL_COMPLETE) && in afs_wait_for_call_to_complete()
572 call->need_attention) { in afs_wait_for_call_to_complete()
573 call->need_attention = false; in afs_wait_for_call_to_complete()
575 afs_deliver_to_call(call); in afs_wait_for_call_to_complete()
580 if (afs_check_call_state(call, AFS_CALL_COMPLETE)) in afs_wait_for_call_to_complete()
583 life = rxrpc_kernel_check_life(call->net->socket, call->rxcall); in afs_wait_for_call_to_complete()
596 remove_wait_queue(&call->waitq, &myself); in afs_wait_for_call_to_complete()
599 /* Kill off the call if it's still live. */ in afs_wait_for_call_to_complete()
600 if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) { in afs_wait_for_call_to_complete()
601 _debug("call interrupted"); in afs_wait_for_call_to_complete()
602 if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_wait_for_call_to_complete()
604 afs_set_call_complete(call, -EINTR, 0); in afs_wait_for_call_to_complete()
607 spin_lock_bh(&call->state_lock); in afs_wait_for_call_to_complete()
608 ac->abort_code = call->abort_code; in afs_wait_for_call_to_complete()
609 ac->error = call->error; in afs_wait_for_call_to_complete()
610 spin_unlock_bh(&call->state_lock); in afs_wait_for_call_to_complete()
615 if (call->ret_reply0) { in afs_wait_for_call_to_complete()
616 ret = (long)call->reply[0]; in afs_wait_for_call_to_complete()
617 call->reply[0] = NULL; in afs_wait_for_call_to_complete()
625 _debug("call complete"); in afs_wait_for_call_to_complete()
626 afs_put_call(call); in afs_wait_for_call_to_complete()
632 * wake up a waiting call
637 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_wake_up_call_waiter() local
639 call->need_attention = true; in afs_wake_up_call_waiter()
640 wake_up(&call->waitq); in afs_wake_up_call_waiter()
644 * wake up an asynchronous call
649 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_wake_up_async_call() local
652 trace_afs_notify_call(rxcall, call); in afs_wake_up_async_call()
653 call->need_attention = true; in afs_wake_up_async_call()
655 u = atomic_fetch_add_unless(&call->usage, 1, 0); in afs_wake_up_async_call()
657 trace_afs_call(call, afs_call_trace_wake, u + 1, in afs_wake_up_async_call()
658 atomic_read(&call->net->nr_outstanding_calls), in afs_wake_up_async_call()
661 if (!queue_work(afs_async_calls, &call->async_work)) in afs_wake_up_async_call()
662 afs_put_call(call); in afs_wake_up_async_call()
667 * Delete an asynchronous call. The work item carries a ref to the call struct
672 struct afs_call *call = container_of(work, struct afs_call, async_work); in afs_delete_async_call() local
676 afs_put_call(call); in afs_delete_async_call()
682 * Perform I/O processing on an asynchronous call. The work item carries a ref
683 * to the call struct that we either need to release or to pass on.
687 struct afs_call *call = container_of(work, struct afs_call, async_work); in afs_process_async_call() local
691 if (call->state < AFS_CALL_COMPLETE && call->need_attention) { in afs_process_async_call()
692 call->need_attention = false; in afs_process_async_call()
693 afs_deliver_to_call(call); in afs_process_async_call()
696 if (call->state == AFS_CALL_COMPLETE) { in afs_process_async_call()
699 * call because the work item may be queued again. in afs_process_async_call()
701 call->async_work.func = afs_delete_async_call; in afs_process_async_call()
702 if (!queue_work(afs_async_calls, &call->async_work)) in afs_process_async_call()
703 afs_put_call(call); in afs_process_async_call()
706 afs_put_call(call); in afs_process_async_call()
712 struct afs_call *call = (struct afs_call *)user_call_ID; in afs_rx_attach() local
714 call->rxcall = rxcall; in afs_rx_attach()
718 * Charge the incoming call preallocation.
724 struct afs_call *call = net->spare_incoming_call; in afs_charge_preallocation() local
727 if (!call) { in afs_charge_preallocation()
728 call = afs_alloc_call(net, &afs_RXCMxxxx, GFP_KERNEL); in afs_charge_preallocation()
729 if (!call) in afs_charge_preallocation()
732 call->async = true; in afs_charge_preallocation()
733 call->state = AFS_CALL_SV_AWAIT_OP_ID; in afs_charge_preallocation()
734 init_waitqueue_head(&call->waitq); in afs_charge_preallocation()
740 (unsigned long)call, in afs_charge_preallocation()
742 call->debug_id) < 0) in afs_charge_preallocation()
744 call = NULL; in afs_charge_preallocation()
746 net->spare_incoming_call = call; in afs_charge_preallocation()
750 * Discard a preallocated call when a socket is shut down.
755 struct afs_call *call = (struct afs_call *)user_call_ID; in afs_rx_discard_new_call() local
757 call->rxcall = NULL; in afs_rx_discard_new_call()
758 afs_put_call(call); in afs_rx_discard_new_call()
762 * Notification of an incoming call.
773 * Grab the operation ID from an incoming cache manager call. The socket
776 static int afs_deliver_cm_op_id(struct afs_call *call) in afs_deliver_cm_op_id() argument
780 _enter("{%zu}", call->offset); in afs_deliver_cm_op_id()
782 ASSERTCMP(call->offset, <, 4); in afs_deliver_cm_op_id()
785 ret = afs_extract_data(call, &call->tmp, 4, true); in afs_deliver_cm_op_id()
789 call->operation_ID = ntohl(call->tmp); in afs_deliver_cm_op_id()
790 afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST); in afs_deliver_cm_op_id()
791 call->offset = 0; in afs_deliver_cm_op_id()
793 /* ask the cache manager to route the call (it'll change the call type in afs_deliver_cm_op_id()
795 if (!afs_cm_incoming_call(call)) in afs_deliver_cm_op_id()
798 trace_afs_cb_call(call); in afs_deliver_cm_op_id()
802 return call->type->deliver(call); in afs_deliver_cm_op_id()
806 * Advance the AFS call state when an RxRPC service call ends the transmit
813 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_notify_end_reply_tx() local
815 afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK); in afs_notify_end_reply_tx()
821 void afs_send_empty_reply(struct afs_call *call) in afs_send_empty_reply() argument
823 struct afs_net *net = call->net; in afs_send_empty_reply()
828 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, 0); in afs_send_empty_reply()
837 switch (rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, 0, in afs_send_empty_reply()
845 rxrpc_kernel_abort_call(net->socket, call->rxcall, in afs_send_empty_reply()
856 void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) in afs_send_simple_reply() argument
858 struct afs_net *net = call->net; in afs_send_simple_reply()
865 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, len); in afs_send_simple_reply()
876 n = rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, len, in afs_send_simple_reply()
886 rxrpc_kernel_abort_call(net->socket, call->rxcall, in afs_send_simple_reply()
895 int afs_extract_data(struct afs_call *call, void *buf, size_t count, in afs_extract_data() argument
898 struct afs_net *net = call->net; in afs_extract_data()
906 call->type->name, call->offset, count, want_more); in afs_extract_data()
908 ASSERTCMP(call->offset, <=, count); in afs_extract_data()
910 iov.iov_base = buf + call->offset; in afs_extract_data()
911 iov.iov_len = count - call->offset; in afs_extract_data()
912 iov_iter_kvec(&iter, ITER_KVEC | READ, &iov, 1, count - call->offset); in afs_extract_data()
914 ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, &iter, in afs_extract_data()
916 &call->service_id); in afs_extract_data()
917 call->offset += (count - call->offset) - iov_iter_count(&iter); in afs_extract_data()
918 trace_afs_recv_data(call, count, call->offset, want_more, ret); in afs_extract_data()
922 state = READ_ONCE(call->state); in afs_extract_data()
926 afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY); in afs_extract_data()
929 afs_set_call_state(call, state, AFS_CALL_SV_REPLYING); in afs_extract_data()
932 kdebug("prem complete %d", call->error); in afs_extract_data()
940 afs_set_call_complete(call, ret, remote_abort); in afs_extract_data()
947 noinline int afs_protocol_error(struct afs_call *call, int error) in afs_protocol_error() argument
949 trace_afs_protocol_error(call, error, __builtin_return_address(0)); in afs_protocol_error()