Lines Matching full:call
27 /* asynchronous incoming call initial processing */
135 * Allocate a call.
141 struct afs_call *call; in afs_alloc_call() local
144 call = kzalloc(sizeof(*call), gfp); in afs_alloc_call()
145 if (!call) in afs_alloc_call()
148 call->type = type; in afs_alloc_call()
149 call->net = net; in afs_alloc_call()
150 call->debug_id = atomic_inc_return(&rxrpc_debug_id); in afs_alloc_call()
151 atomic_set(&call->usage, 1); in afs_alloc_call()
152 INIT_WORK(&call->async_work, afs_process_async_call); in afs_alloc_call()
153 init_waitqueue_head(&call->waitq); in afs_alloc_call()
154 spin_lock_init(&call->state_lock); in afs_alloc_call()
155 call->_iter = &call->iter; in afs_alloc_call()
158 trace_afs_call(call, afs_call_trace_alloc, 1, o, in afs_alloc_call()
160 return call; in afs_alloc_call()
164 * Dispose of a reference on a call.
166 void afs_put_call(struct afs_call *call) in afs_put_call() argument
168 struct afs_net *net = call->net; in afs_put_call()
169 int n = atomic_dec_return(&call->usage); in afs_put_call()
172 trace_afs_call(call, afs_call_trace_put, n + 1, o, in afs_put_call()
177 ASSERT(!work_pending(&call->async_work)); in afs_put_call()
178 ASSERT(call->type->name != NULL); in afs_put_call()
180 if (call->rxcall) { in afs_put_call()
181 rxrpc_kernel_end_call(net->socket, call->rxcall); in afs_put_call()
182 call->rxcall = NULL; in afs_put_call()
184 if (call->type->destructor) in afs_put_call()
185 call->type->destructor(call); in afs_put_call()
187 afs_put_server(call->net, call->server, afs_server_trace_put_call); in afs_put_call()
188 afs_put_cb_interest(call->net, call->cbi); in afs_put_call()
189 afs_put_addrlist(call->alist); in afs_put_call()
190 kfree(call->request); in afs_put_call()
192 trace_afs_call(call, afs_call_trace_free, 0, o, in afs_put_call()
194 kfree(call); in afs_put_call()
202 static struct afs_call *afs_get_call(struct afs_call *call, in afs_get_call() argument
205 int u = atomic_inc_return(&call->usage); in afs_get_call()
207 trace_afs_call(call, why, u, in afs_get_call()
208 atomic_read(&call->net->nr_outstanding_calls), in afs_get_call()
210 return call; in afs_get_call()
214 * Queue the call for actual work.
216 static void afs_queue_call_work(struct afs_call *call) in afs_queue_call_work() argument
218 if (call->type->work) { in afs_queue_call_work()
219 INIT_WORK(&call->work, call->type->work); in afs_queue_call_work()
221 afs_get_call(call, afs_call_trace_work); in afs_queue_call_work()
222 if (!queue_work(afs_wq, &call->work)) in afs_queue_call_work()
223 afs_put_call(call); in afs_queue_call_work()
228 * allocate a call with flat request and reply buffers
234 struct afs_call *call; in afs_alloc_flat_call() local
236 call = afs_alloc_call(net, type, GFP_NOFS); in afs_alloc_flat_call()
237 if (!call) in afs_alloc_flat_call()
241 call->request_size = request_size; in afs_alloc_flat_call()
242 call->request = kmalloc(request_size, GFP_NOFS); in afs_alloc_flat_call()
243 if (!call->request) in afs_alloc_flat_call()
248 call->reply_max = reply_max; in afs_alloc_flat_call()
249 call->buffer = kmalloc(reply_max, GFP_NOFS); in afs_alloc_flat_call()
250 if (!call->buffer) in afs_alloc_flat_call()
254 afs_extract_to_buf(call, call->reply_max); in afs_alloc_flat_call()
255 call->operation_ID = type->op; in afs_alloc_flat_call()
256 init_waitqueue_head(&call->waitq); in afs_alloc_flat_call()
257 return call; in afs_alloc_flat_call()
260 afs_put_call(call); in afs_alloc_flat_call()
266 * clean up a call with flat buffer
268 void afs_flat_call_destructor(struct afs_call *call) in afs_flat_call_destructor() argument
272 kfree(call->request); in afs_flat_call_destructor()
273 call->request = NULL; in afs_flat_call_destructor()
274 kfree(call->buffer); in afs_flat_call_destructor()
275 call->buffer = NULL; in afs_flat_call_destructor()
283 static void afs_load_bvec(struct afs_call *call, struct msghdr *msg, in afs_load_bvec() argument
291 n = find_get_pages_contig(call->mapping, first, nr, pages); in afs_load_bvec()
298 to = call->last_to; in afs_load_bvec()
312 * Advance the AFS call state when the RxRPC call ends the transmit phase.
318 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_notify_end_request_tx() local
320 afs_set_call_state(call, AFS_CALL_CL_REQUESTING, AFS_CALL_CL_AWAIT_REPLY); in afs_notify_end_request_tx()
324 * attach the data from a bunch of pages on an inode to a call
326 static int afs_send_pages(struct afs_call *call, struct msghdr *msg) in afs_send_pages() argument
330 pgoff_t first = call->first, last = call->last; in afs_send_pages()
333 offset = call->first_offset; in afs_send_pages()
334 call->first_offset = 0; in afs_send_pages()
337 afs_load_bvec(call, msg, bv, first, last, offset); in afs_send_pages()
338 trace_afs_send_pages(call, msg, first, last, offset); in afs_send_pages()
344 ret = rxrpc_kernel_send_data(call->net->socket, call->rxcall, msg, in afs_send_pages()
354 trace_afs_sent_pages(call, call->first, last, first, ret); in afs_send_pages()
359 * Initiate a call and synchronously queue up the parameters for dispatch. Any
360 * error is stored into the call struct, which the caller must check for.
362 void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp) in afs_make_call() argument
373 ASSERT(call->type != NULL); in afs_make_call()
374 ASSERT(call->type->name != NULL); in afs_make_call()
377 call, call->type->name, key_serial(call->key), in afs_make_call()
378 atomic_read(&call->net->nr_outstanding_calls)); in afs_make_call()
380 call->addr_ix = ac->index; in afs_make_call()
381 call->alist = afs_get_addrlist(ac->alist); in afs_make_call()
387 tx_total_len = call->request_size; in afs_make_call()
388 if (call->send_pages) { in afs_make_call()
389 if (call->last == call->first) { in afs_make_call()
390 tx_total_len += call->last_to - call->first_offset; in afs_make_call()
396 tx_total_len += PAGE_SIZE - call->first_offset; in afs_make_call()
397 tx_total_len += call->last_to; in afs_make_call()
398 tx_total_len += (call->last - call->first - 1) * PAGE_SIZE; in afs_make_call()
402 /* If the call is going to be asynchronous, we need an extra ref for in afs_make_call()
403 * the call to hold itself so the caller need not hang on to its ref. in afs_make_call()
405 if (call->async) in afs_make_call()
406 afs_get_call(call, afs_call_trace_get); in afs_make_call()
408 /* create a call */ in afs_make_call()
409 rxcall = rxrpc_kernel_begin_call(call->net->socket, srx, call->key, in afs_make_call()
410 (unsigned long)call, in afs_make_call()
412 (call->async ? in afs_make_call()
415 call->upgrade, in afs_make_call()
416 call->intr, in afs_make_call()
417 call->debug_id); in afs_make_call()
420 call->error = ret; in afs_make_call()
424 call->rxcall = rxcall; in afs_make_call()
426 if (call->max_lifespan) in afs_make_call()
427 rxrpc_kernel_set_max_life(call->net->socket, rxcall, in afs_make_call()
428 call->max_lifespan); in afs_make_call()
431 iov[0].iov_base = call->request; in afs_make_call()
432 iov[0].iov_len = call->request_size; in afs_make_call()
436 iov_iter_kvec(&msg.msg_iter, WRITE, iov, 1, call->request_size); in afs_make_call()
439 msg.msg_flags = MSG_WAITALL | (call->send_pages ? MSG_MORE : 0); in afs_make_call()
441 ret = rxrpc_kernel_send_data(call->net->socket, rxcall, in afs_make_call()
442 &msg, call->request_size, in afs_make_call()
447 if (call->send_pages) { in afs_make_call()
448 ret = afs_send_pages(call, &msg); in afs_make_call()
454 * - and an asynchronous call may already have completed. in afs_make_call()
456 * afs_wait_for_call_to_complete(call, ac) in afs_make_call()
463 rxrpc_kernel_abort_call(call->net->socket, rxcall, in afs_make_call()
467 rxrpc_kernel_recv_data(call->net->socket, rxcall, in afs_make_call()
469 &call->abort_code, &call->service_id); in afs_make_call()
470 ac->abort_code = call->abort_code; in afs_make_call()
473 call->error = ret; in afs_make_call()
474 trace_afs_call_done(call); in afs_make_call()
476 if (call->type->done) in afs_make_call()
477 call->type->done(call); in afs_make_call()
479 /* We need to dispose of the extra ref we grabbed for an async call. in afs_make_call()
480 * The call, however, might be queued on afs_async_calls and we need to in afs_make_call()
483 if (call->rxcall) { in afs_make_call()
484 rxrpc_kernel_end_call(call->net->socket, call->rxcall); in afs_make_call()
485 call->rxcall = NULL; in afs_make_call()
487 if (call->async) { in afs_make_call()
488 if (cancel_work_sync(&call->async_work)) in afs_make_call()
489 afs_put_call(call); in afs_make_call()
490 afs_put_call(call); in afs_make_call()
494 call->state = AFS_CALL_COMPLETE; in afs_make_call()
499 * deliver messages to a call
501 static void afs_deliver_to_call(struct afs_call *call) in afs_deliver_to_call() argument
507 _enter("%s", call->type->name); in afs_deliver_to_call()
509 while (state = READ_ONCE(call->state), in afs_deliver_to_call()
516 iov_iter_kvec(&call->iter, READ, NULL, 0, 0); in afs_deliver_to_call()
517 ret = rxrpc_kernel_recv_data(call->net->socket, in afs_deliver_to_call()
518 call->rxcall, &call->iter, in afs_deliver_to_call()
520 &call->service_id); in afs_deliver_to_call()
521 trace_afs_receive_data(call, &call->iter, false, ret); in afs_deliver_to_call()
533 if (!call->have_reply_time && in afs_deliver_to_call()
534 rxrpc_kernel_get_reply_time(call->net->socket, in afs_deliver_to_call()
535 call->rxcall, in afs_deliver_to_call()
536 &call->reply_time)) in afs_deliver_to_call()
537 call->have_reply_time = true; in afs_deliver_to_call()
539 ret = call->type->deliver(call); in afs_deliver_to_call()
540 state = READ_ONCE(call->state); in afs_deliver_to_call()
543 afs_queue_call_work(call); in afs_deliver_to_call()
545 if (call->cbi) in afs_deliver_to_call()
547 &call->cbi->server->flags); in afs_deliver_to_call()
560 rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_deliver_to_call()
564 pr_err("kAFS: Call %u in bad state %u\n", in afs_deliver_to_call()
565 call->debug_id, state); in afs_deliver_to_call()
573 rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_deliver_to_call()
578 rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_deliver_to_call()
585 if (call->type->done) in afs_deliver_to_call()
586 call->type->done(call); in afs_deliver_to_call()
587 if (state == AFS_CALL_COMPLETE && call->incoming) in afs_deliver_to_call()
588 afs_put_call(call); in afs_deliver_to_call()
596 afs_set_call_complete(call, ret, remote_abort); in afs_deliver_to_call()
602 * Wait synchronously for a call to complete and clean up the call struct.
604 long afs_wait_for_call_to_complete(struct afs_call *call, in afs_wait_for_call_to_complete() argument
618 ret = call->error; in afs_wait_for_call_to_complete()
622 rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall); in afs_wait_for_call_to_complete()
628 rxrpc_kernel_check_life(call->net->socket, call->rxcall, &last_life); in afs_wait_for_call_to_complete()
630 add_wait_queue(&call->waitq, &myself); in afs_wait_for_call_to_complete()
635 if (!afs_check_call_state(call, AFS_CALL_COMPLETE) && in afs_wait_for_call_to_complete()
636 call->need_attention) { in afs_wait_for_call_to_complete()
637 call->need_attention = false; in afs_wait_for_call_to_complete()
639 afs_deliver_to_call(call); in afs_wait_for_call_to_complete()
644 if (afs_check_call_state(call, AFS_CALL_COMPLETE)) in afs_wait_for_call_to_complete()
647 if (!rxrpc_kernel_check_life(call->net->socket, call->rxcall, &life)) { in afs_wait_for_call_to_complete()
648 /* rxrpc terminated the call. */ in afs_wait_for_call_to_complete()
653 if (call->intr && timeout == 0 && in afs_wait_for_call_to_complete()
658 rxrpc_kernel_probe_life(call->net->socket, call->rxcall); in afs_wait_for_call_to_complete()
673 remove_wait_queue(&call->waitq, &myself); in afs_wait_for_call_to_complete()
676 if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) { in afs_wait_for_call_to_complete()
678 afs_set_call_complete(call, call->error, call->abort_code); in afs_wait_for_call_to_complete()
680 /* Kill off the call if it's still live. */ in afs_wait_for_call_to_complete()
681 _debug("call interrupted"); in afs_wait_for_call_to_complete()
682 if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall, in afs_wait_for_call_to_complete()
684 afs_set_call_complete(call, -EINTR, 0); in afs_wait_for_call_to_complete()
688 spin_lock_bh(&call->state_lock); in afs_wait_for_call_to_complete()
689 ac->abort_code = call->abort_code; in afs_wait_for_call_to_complete()
690 ac->error = call->error; in afs_wait_for_call_to_complete()
691 spin_unlock_bh(&call->state_lock); in afs_wait_for_call_to_complete()
696 ret = call->ret0; in afs_wait_for_call_to_complete()
697 call->ret0 = 0; in afs_wait_for_call_to_complete()
706 _debug("call complete"); in afs_wait_for_call_to_complete()
707 afs_put_call(call); in afs_wait_for_call_to_complete()
713 * wake up a waiting call
718 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_wake_up_call_waiter() local
720 call->need_attention = true; in afs_wake_up_call_waiter()
721 wake_up(&call->waitq); in afs_wake_up_call_waiter()
725 * wake up an asynchronous call
730 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_wake_up_async_call() local
733 trace_afs_notify_call(rxcall, call); in afs_wake_up_async_call()
734 call->need_attention = true; in afs_wake_up_async_call()
736 u = atomic_fetch_add_unless(&call->usage, 1, 0); in afs_wake_up_async_call()
738 trace_afs_call(call, afs_call_trace_wake, u, in afs_wake_up_async_call()
739 atomic_read(&call->net->nr_outstanding_calls), in afs_wake_up_async_call()
742 if (!queue_work(afs_async_calls, &call->async_work)) in afs_wake_up_async_call()
743 afs_put_call(call); in afs_wake_up_async_call()
748 * Delete an asynchronous call. The work item carries a ref to the call struct
753 struct afs_call *call = container_of(work, struct afs_call, async_work); in afs_delete_async_call() local
757 afs_put_call(call); in afs_delete_async_call()
763 * Perform I/O processing on an asynchronous call. The work item carries a ref
764 * to the call struct that we either need to release or to pass on.
768 struct afs_call *call = container_of(work, struct afs_call, async_work); in afs_process_async_call() local
772 if (call->state < AFS_CALL_COMPLETE && call->need_attention) { in afs_process_async_call()
773 call->need_attention = false; in afs_process_async_call()
774 afs_deliver_to_call(call); in afs_process_async_call()
777 if (call->state == AFS_CALL_COMPLETE) { in afs_process_async_call()
780 * call because the work item may be queued again. in afs_process_async_call()
782 call->async_work.func = afs_delete_async_call; in afs_process_async_call()
783 if (!queue_work(afs_async_calls, &call->async_work)) in afs_process_async_call()
784 afs_put_call(call); in afs_process_async_call()
787 afs_put_call(call); in afs_process_async_call()
793 struct afs_call *call = (struct afs_call *)user_call_ID; in afs_rx_attach() local
795 call->rxcall = rxcall; in afs_rx_attach()
799 * Charge the incoming call preallocation.
805 struct afs_call *call = net->spare_incoming_call; in afs_charge_preallocation() local
808 if (!call) { in afs_charge_preallocation()
809 call = afs_alloc_call(net, &afs_RXCMxxxx, GFP_KERNEL); in afs_charge_preallocation()
810 if (!call) in afs_charge_preallocation()
813 call->async = true; in afs_charge_preallocation()
814 call->state = AFS_CALL_SV_AWAIT_OP_ID; in afs_charge_preallocation()
815 init_waitqueue_head(&call->waitq); in afs_charge_preallocation()
816 afs_extract_to_tmp(call); in afs_charge_preallocation()
822 (unsigned long)call, in afs_charge_preallocation()
824 call->debug_id) < 0) in afs_charge_preallocation()
826 call = NULL; in afs_charge_preallocation()
828 net->spare_incoming_call = call; in afs_charge_preallocation()
832 * Discard a preallocated call when a socket is shut down.
837 struct afs_call *call = (struct afs_call *)user_call_ID; in afs_rx_discard_new_call() local
839 call->rxcall = NULL; in afs_rx_discard_new_call()
840 afs_put_call(call); in afs_rx_discard_new_call()
844 * Notification of an incoming call.
855 * Grab the operation ID from an incoming cache manager call. The socket
858 static int afs_deliver_cm_op_id(struct afs_call *call) in afs_deliver_cm_op_id() argument
862 _enter("{%zu}", iov_iter_count(call->_iter)); in afs_deliver_cm_op_id()
865 ret = afs_extract_data(call, true); in afs_deliver_cm_op_id()
869 call->operation_ID = ntohl(call->tmp); in afs_deliver_cm_op_id()
870 afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST); in afs_deliver_cm_op_id()
872 /* ask the cache manager to route the call (it'll change the call type in afs_deliver_cm_op_id()
874 if (!afs_cm_incoming_call(call)) in afs_deliver_cm_op_id()
877 trace_afs_cb_call(call); in afs_deliver_cm_op_id()
881 return call->type->deliver(call); in afs_deliver_cm_op_id()
885 * Advance the AFS call state when an RxRPC service call ends the transmit
892 struct afs_call *call = (struct afs_call *)call_user_ID; in afs_notify_end_reply_tx() local
894 afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK); in afs_notify_end_reply_tx()
900 void afs_send_empty_reply(struct afs_call *call) in afs_send_empty_reply() argument
902 struct afs_net *net = call->net; in afs_send_empty_reply()
907 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, 0); in afs_send_empty_reply()
916 switch (rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, 0, in afs_send_empty_reply()
924 rxrpc_kernel_abort_call(net->socket, call->rxcall, in afs_send_empty_reply()
936 void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) in afs_send_simple_reply() argument
938 struct afs_net *net = call->net; in afs_send_simple_reply()
945 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, len); in afs_send_simple_reply()
956 n = rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, len, in afs_send_simple_reply()
966 rxrpc_kernel_abort_call(net->socket, call->rxcall, in afs_send_simple_reply()
975 int afs_extract_data(struct afs_call *call, bool want_more) in afs_extract_data() argument
977 struct afs_net *net = call->net; in afs_extract_data()
978 struct iov_iter *iter = call->_iter; in afs_extract_data()
983 _enter("{%s,%zu},%d", call->type->name, iov_iter_count(iter), want_more); in afs_extract_data()
985 ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, iter, in afs_extract_data()
987 &call->service_id); in afs_extract_data()
991 state = READ_ONCE(call->state); in afs_extract_data()
995 afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY); in afs_extract_data()
998 afs_set_call_state(call, state, AFS_CALL_SV_REPLYING); in afs_extract_data()
1001 kdebug("prem complete %d", call->error); in afs_extract_data()
1002 return afs_io_error(call, afs_io_error_extract); in afs_extract_data()
1009 afs_set_call_complete(call, ret, remote_abort); in afs_extract_data()
1016 noinline int afs_protocol_error(struct afs_call *call, int error, in afs_protocol_error() argument
1019 trace_afs_protocol_error(call, error, cause); in afs_protocol_error()