Lines Matching refs:call
28 /* asynchronous incoming call initial processing */
134 * Allocate a call.
140 struct afs_call *call;
143 call = kzalloc(sizeof(*call), gfp);
144 if (!call)
147 call->type = type;
148 call->net = net;
149 call->debug_id = atomic_inc_return(&rxrpc_debug_id);
150 refcount_set(&call->ref, 1);
151 INIT_WORK(&call->async_work, afs_process_async_call);
152 init_waitqueue_head(&call->waitq);
153 spin_lock_init(&call->state_lock);
154 call->iter = &call->def_iter;
157 trace_afs_call(call->debug_id, afs_call_trace_alloc, 1, o,
159 return call;
163 * Dispose of a reference on a call.
165 void afs_put_call(struct afs_call *call)
167 struct afs_net *net = call->net;
168 unsigned int debug_id = call->debug_id;
172 zero = __refcount_dec_and_test(&call->ref, &r);
178 ASSERT(!work_pending(&call->async_work));
179 ASSERT(call->type->name != NULL);
181 rxrpc_kernel_put_peer(call->peer);
183 if (call->rxcall) {
184 rxrpc_kernel_shutdown_call(net->socket, call->rxcall);
185 rxrpc_kernel_put_call(net->socket, call->rxcall);
186 call->rxcall = NULL;
188 if (call->type->destructor)
189 call->type->destructor(call);
191 afs_unuse_server_notime(call->net, call->server, afs_server_trace_put_call);
192 kfree(call->request);
194 trace_afs_call(call->debug_id, afs_call_trace_free, 0, o,
196 kfree(call);
204 static struct afs_call *afs_get_call(struct afs_call *call,
209 __refcount_inc(&call->ref, &r);
211 trace_afs_call(call->debug_id, why, r + 1,
212 atomic_read(&call->net->nr_outstanding_calls),
214 return call;
218 * Queue the call for actual work.
220 static void afs_queue_call_work(struct afs_call *call)
222 if (call->type->work) {
223 INIT_WORK(&call->work, call->type->work);
225 afs_get_call(call, afs_call_trace_work);
226 if (!queue_work(afs_wq, &call->work))
227 afs_put_call(call);
232 * allocate a call with flat request and reply buffers
238 struct afs_call *call;
240 call = afs_alloc_call(net, type, GFP_NOFS);
241 if (!call)
245 call->request_size = request_size;
246 call->request = kmalloc(request_size, GFP_NOFS);
247 if (!call->request)
252 call->reply_max = reply_max;
253 call->buffer = kmalloc(reply_max, GFP_NOFS);
254 if (!call->buffer)
258 afs_extract_to_buf(call, call->reply_max);
259 call->operation_ID = type->op;
260 init_waitqueue_head(&call->waitq);
261 return call;
264 afs_put_call(call);
270 * clean up a call with flat buffer
272 void afs_flat_call_destructor(struct afs_call *call)
276 kfree(call->request);
277 call->request = NULL;
278 kfree(call->buffer);
279 call->buffer = NULL;
283 * Advance the AFS call state when the RxRPC call ends the transmit phase.
289 struct afs_call *call = (struct afs_call *)call_user_ID;
291 afs_set_call_state(call, AFS_CALL_CL_REQUESTING, AFS_CALL_CL_AWAIT_REPLY);
295 * Initiate a call and synchronously queue up the parameters for dispatch. Any
296 * error is stored into the call struct, which the caller must check for.
298 void afs_make_call(struct afs_call *call, gfp_t gfp)
307 _enter(",{%pISp+%u},", rxrpc_kernel_remote_addr(call->peer), call->service_id);
309 ASSERT(call->type != NULL);
310 ASSERT(call->type->name != NULL);
313 call, call->type->name, key_serial(call->key),
314 atomic_read(&call->net->nr_outstanding_calls));
316 trace_afs_make_call(call);
322 tx_total_len = call->request_size;
323 if (call->write_iter)
324 tx_total_len += iov_iter_count(call->write_iter);
326 /* If the call is going to be asynchronous, we need an extra ref for
327 * the call to hold itself so the caller need not hang on to its ref.
329 if (call->async) {
330 afs_get_call(call, afs_call_trace_get);
331 call->drop_ref = true;
334 /* create a call */
335 rxcall = rxrpc_kernel_begin_call(call->net->socket, call->peer, call->key,
336 (unsigned long)call,
338 call->max_lifespan,
340 (call->async ?
343 call->service_id,
344 call->upgrade,
345 (call->intr ? RXRPC_PREINTERRUPTIBLE :
347 call->debug_id);
350 call->error = ret;
354 call->rxcall = rxcall;
355 call->issue_time = ktime_get_real();
358 iov[0].iov_base = call->request;
359 iov[0].iov_len = call->request_size;
363 iov_iter_kvec(&msg.msg_iter, ITER_SOURCE, iov, 1, call->request_size);
366 msg.msg_flags = MSG_WAITALL | (call->write_iter ? MSG_MORE : 0);
368 ret = rxrpc_kernel_send_data(call->net->socket, rxcall,
369 &msg, call->request_size,
374 if (call->write_iter) {
375 msg.msg_iter = *call->write_iter;
377 trace_afs_send_data(call, &msg);
379 ret = rxrpc_kernel_send_data(call->net->socket,
380 call->rxcall, &msg,
383 *call->write_iter = msg.msg_iter;
385 trace_afs_sent_data(call, &msg, ret);
391 * - and an asynchronous call may already have completed.
393 * afs_wait_for_call_to_complete(call)
400 rxrpc_kernel_abort_call(call->net->socket, rxcall,
406 rxrpc_kernel_recv_data(call->net->socket, rxcall,
408 &call->abort_code, &call->service_id);
409 call->responded = true;
411 call->error = ret;
412 trace_afs_call_done(call);
414 if (call->type->done)
415 call->type->done(call);
417 /* We need to dispose of the extra ref we grabbed for an async call.
418 * The call, however, might be queued on afs_async_calls and we need to
421 if (call->rxcall)
422 rxrpc_kernel_shutdown_call(call->net->socket, call->rxcall);
423 if (call->async) {
424 if (cancel_work_sync(&call->async_work))
425 afs_put_call(call);
426 afs_set_call_complete(call, ret, 0);
429 call->error = ret;
430 call->state = AFS_CALL_COMPLETE;
438 static void afs_log_error(struct afs_call *call, s32 remote_abort)
462 msg, call->type->name,
463 rxrpc_kernel_remote_addr(call->peer));
468 * deliver messages to a call
470 static void afs_deliver_to_call(struct afs_call *call)
477 _enter("%s", call->type->name);
479 while (state = READ_ONCE(call->state),
487 iov_iter_kvec(&call->def_iter, ITER_DEST, NULL, 0, 0);
488 ret = rxrpc_kernel_recv_data(call->net->socket,
489 call->rxcall, &call->def_iter,
491 &call->service_id);
492 trace_afs_receive_data(call, &call->def_iter, false, ret);
504 ret = call->type->deliver(call);
505 state = READ_ONCE(call->state);
506 if (ret == 0 && call->unmarshalling_error)
510 call->responded = true;
511 afs_queue_call_work(call);
513 if (call->op)
515 &call->op->server->flags);
525 call->responded = true;
526 afs_log_error(call, call->abort_code);
529 call->responded = true;
531 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
537 call->debug_id, state);
547 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
553 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
561 if (call->type->done)
562 call->type->done(call);
570 afs_set_call_complete(call, ret, remote_abort);
576 * Wait synchronously for a call to complete.
578 void afs_wait_for_call_to_complete(struct afs_call *call)
584 if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) {
587 add_wait_queue(&call->waitq, &myself);
592 if (!afs_check_call_state(call, AFS_CALL_COMPLETE) &&
593 call->need_attention) {
594 call->need_attention = false;
596 afs_deliver_to_call(call);
600 if (afs_check_call_state(call, AFS_CALL_COMPLETE))
603 if (!rxrpc_kernel_check_life(call->net->socket, call->rxcall)) {
604 /* rxrpc terminated the call. */
612 remove_wait_queue(&call->waitq, &myself);
616 if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) {
618 afs_set_call_complete(call, call->error, call->abort_code);
620 /* Kill off the call if it's still live. */
621 _debug("call interrupted");
622 if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
625 afs_set_call_complete(call, -EINTR, 0);
631 * wake up a waiting call
636 struct afs_call *call = (struct afs_call *)call_user_ID;
638 call->need_attention = true;
639 wake_up(&call->waitq);
643 * wake up an asynchronous call
648 struct afs_call *call = (struct afs_call *)call_user_ID;
651 trace_afs_notify_call(rxcall, call);
652 call->need_attention = true;
654 if (__refcount_inc_not_zero(&call->ref, &r)) {
655 trace_afs_call(call->debug_id, afs_call_trace_wake, r + 1,
656 atomic_read(&call->net->nr_outstanding_calls),
659 if (!queue_work(afs_async_calls, &call->async_work))
660 afs_put_call(call);
665 * Perform I/O processing on an asynchronous call. The work item carries a ref
666 * to the call struct that we either need to release or to pass on.
670 struct afs_call *call = container_of(work, struct afs_call, async_work);
674 if (call->state < AFS_CALL_COMPLETE && call->need_attention) {
675 call->need_attention = false;
676 afs_deliver_to_call(call);
679 afs_put_call(call);
685 struct afs_call *call = (struct afs_call *)user_call_ID;
687 call->rxcall = rxcall;
691 * Charge the incoming call preallocation.
697 struct afs_call *call = net->spare_incoming_call;
700 if (!call) {
701 call = afs_alloc_call(net, &afs_RXCMxxxx, GFP_KERNEL);
702 if (!call)
705 call->drop_ref = true;
706 call->async = true;
707 call->state = AFS_CALL_SV_AWAIT_OP_ID;
708 init_waitqueue_head(&call->waitq);
709 afs_extract_to_tmp(call);
715 (unsigned long)call,
717 call->debug_id) < 0)
719 call = NULL;
721 net->spare_incoming_call = call;
725 * Discard a preallocated call when a socket is shut down.
730 struct afs_call *call = (struct afs_call *)user_call_ID;
732 call->rxcall = NULL;
733 afs_put_call(call);
737 * Notification of an incoming call.
748 * Grab the operation ID from an incoming cache manager call. The socket
751 static int afs_deliver_cm_op_id(struct afs_call *call)
755 _enter("{%zu}", iov_iter_count(call->iter));
758 ret = afs_extract_data(call, true);
762 call->operation_ID = ntohl(call->tmp);
763 afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST);
765 /* ask the cache manager to route the call (it'll change the call type
767 if (!afs_cm_incoming_call(call))
770 trace_afs_cb_call(call);
774 return call->type->deliver(call);
778 * Advance the AFS call state when an RxRPC service call ends the transmit
785 struct afs_call *call = (struct afs_call *)call_user_ID;
787 afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK);
793 void afs_send_empty_reply(struct afs_call *call)
795 struct afs_net *net = call->net;
800 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, 0);
809 switch (rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, 0,
817 rxrpc_kernel_abort_call(net->socket, call->rxcall,
830 void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len)
832 struct afs_net *net = call->net;
839 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, len);
850 n = rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, len,
860 rxrpc_kernel_abort_call(net->socket, call->rxcall,
870 int afs_extract_data(struct afs_call *call, bool want_more)
872 struct afs_net *net = call->net;
873 struct iov_iter *iter = call->iter;
879 call->type->name, call->iov_len, iov_iter_count(iter), want_more);
881 ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, iter,
882 &call->iov_len, want_more, &remote_abort,
883 &call->service_id);
884 trace_afs_receive_data(call, call->iter, want_more, ret);
888 state = READ_ONCE(call->state);
892 afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY);
895 afs_set_call_state(call, state, AFS_CALL_SV_REPLYING);
898 kdebug("prem complete %d", call->error);
899 return afs_io_error(call, afs_io_error_extract);
906 afs_set_call_complete(call, ret, remote_abort);
913 noinline int afs_protocol_error(struct afs_call *call,
916 trace_afs_protocol_error(call, cause);
917 if (call)
918 call->unmarshalling_error = true;