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 if (call->rxcall) {
182 rxrpc_kernel_shutdown_call(net->socket, call->rxcall);
183 rxrpc_kernel_put_call(net->socket, call->rxcall);
184 call->rxcall = NULL;
186 if (call->type->destructor)
187 call->type->destructor(call);
189 afs_unuse_server_notime(call->net, call->server, afs_server_trace_put_call);
190 afs_put_addrlist(call->alist);
191 kfree(call->request);
193 trace_afs_call(call->debug_id, afs_call_trace_free, 0, o,
195 kfree(call);
203 static struct afs_call *afs_get_call(struct afs_call *call,
208 __refcount_inc(&call->ref, &r);
210 trace_afs_call(call->debug_id, why, r + 1,
211 atomic_read(&call->net->nr_outstanding_calls),
213 return call;
217 * Queue the call for actual work.
219 static void afs_queue_call_work(struct afs_call *call)
221 if (call->type->work) {
222 INIT_WORK(&call->work, call->type->work);
224 afs_get_call(call, afs_call_trace_work);
225 if (!queue_work(afs_wq, &call->work))
226 afs_put_call(call);
231 * allocate a call with flat request and reply buffers
237 struct afs_call *call;
239 call = afs_alloc_call(net, type, GFP_NOFS);
240 if (!call)
244 call->request_size = request_size;
245 call->request = kmalloc(request_size, GFP_NOFS);
246 if (!call->request)
251 call->reply_max = reply_max;
252 call->buffer = kmalloc(reply_max, GFP_NOFS);
253 if (!call->buffer)
257 afs_extract_to_buf(call, call->reply_max);
258 call->operation_ID = type->op;
259 init_waitqueue_head(&call->waitq);
260 return call;
263 afs_put_call(call);
269 * clean up a call with flat buffer
271 void afs_flat_call_destructor(struct afs_call *call)
275 kfree(call->request);
276 call->request = NULL;
277 kfree(call->buffer);
278 call->buffer = NULL;
282 * Advance the AFS call state when the RxRPC call ends the transmit phase.
288 struct afs_call *call = (struct afs_call *)call_user_ID;
290 afs_set_call_state(call, AFS_CALL_CL_REQUESTING, AFS_CALL_CL_AWAIT_REPLY);
294 * Initiate a call and synchronously queue up the parameters for dispatch. Any
295 * error is stored into the call struct, which the caller must check for.
297 void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp)
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 call->addr_ix = ac->index;
317 call->alist = afs_get_addrlist(ac->alist);
323 tx_total_len = call->request_size;
324 if (call->write_iter)
325 tx_total_len += iov_iter_count(call->write_iter);
327 /* If the call is going to be asynchronous, we need an extra ref for
328 * the call to hold itself so the caller need not hang on to its ref.
330 if (call->async) {
331 afs_get_call(call, afs_call_trace_get);
332 call->drop_ref = true;
335 /* create a call */
336 rxcall = rxrpc_kernel_begin_call(call->net->socket, srx, call->key,
337 (unsigned long)call,
339 call->max_lifespan,
341 (call->async ?
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, ac)
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 ac->abort_code = call->abort_code;
412 call->error = ret;
413 trace_afs_call_done(call);
415 if (call->type->done)
416 call->type->done(call);
418 /* We need to dispose of the extra ref we grabbed for an async call.
419 * The call, however, might be queued on afs_async_calls and we need to
422 if (call->rxcall)
423 rxrpc_kernel_shutdown_call(call->net->socket, call->rxcall);
424 if (call->async) {
425 if (cancel_work_sync(&call->async_work))
426 afs_put_call(call);
427 afs_set_call_complete(call, ret, 0);
431 call->state = AFS_CALL_COMPLETE;
439 static void afs_log_error(struct afs_call *call, s32 remote_abort)
463 msg, call->type->name,
464 &call->alist->addrs[call->addr_ix].transport);
469 * deliver messages to a call
471 static void afs_deliver_to_call(struct afs_call *call)
478 _enter("%s", call->type->name);
480 while (state = READ_ONCE(call->state),
488 iov_iter_kvec(&call->def_iter, ITER_DEST, NULL, 0, 0);
489 ret = rxrpc_kernel_recv_data(call->net->socket,
490 call->rxcall, &call->def_iter,
492 &call->service_id);
493 trace_afs_receive_data(call, &call->def_iter, false, ret);
505 ret = call->type->deliver(call);
506 state = READ_ONCE(call->state);
507 if (ret == 0 && call->unmarshalling_error)
511 afs_queue_call_work(call);
513 if (call->op)
515 &call->op->server->flags);
525 afs_log_error(call, call->abort_code);
529 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
535 call->debug_id, state);
545 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
551 rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
559 if (call->type->done)
560 call->type->done(call);
568 afs_set_call_complete(call, ret, remote_abort);
574 * Wait synchronously for a call to complete and clean up the call struct.
576 long afs_wait_for_call_to_complete(struct afs_call *call,
586 ret = call->error;
590 add_wait_queue(&call->waitq, &myself);
595 if (!afs_check_call_state(call, AFS_CALL_COMPLETE) &&
596 call->need_attention) {
597 call->need_attention = false;
599 afs_deliver_to_call(call);
603 if (afs_check_call_state(call, AFS_CALL_COMPLETE))
606 if (!rxrpc_kernel_check_life(call->net->socket, call->rxcall)) {
607 /* rxrpc terminated the call. */
615 remove_wait_queue(&call->waitq, &myself);
618 if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) {
620 afs_set_call_complete(call, call->error, call->abort_code);
622 /* Kill off the call if it's still live. */
623 _debug("call interrupted");
624 if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
627 afs_set_call_complete(call, -EINTR, 0);
631 spin_lock_bh(&call->state_lock);
632 ac->abort_code = call->abort_code;
633 ac->error = call->error;
634 spin_unlock_bh(&call->state_lock);
639 ret = call->ret0;
640 call->ret0 = 0;
649 _debug("call complete");
650 afs_put_call(call);
656 * wake up a waiting call
661 struct afs_call *call = (struct afs_call *)call_user_ID;
663 call->need_attention = true;
664 wake_up(&call->waitq);
668 * wake up an asynchronous call
673 struct afs_call *call = (struct afs_call *)call_user_ID;
676 trace_afs_notify_call(rxcall, call);
677 call->need_attention = true;
679 if (__refcount_inc_not_zero(&call->ref, &r)) {
680 trace_afs_call(call->debug_id, afs_call_trace_wake, r + 1,
681 atomic_read(&call->net->nr_outstanding_calls),
684 if (!queue_work(afs_async_calls, &call->async_work))
685 afs_put_call(call);
690 * Perform I/O processing on an asynchronous call. The work item carries a ref
691 * to the call struct that we either need to release or to pass on.
695 struct afs_call *call = container_of(work, struct afs_call, async_work);
699 if (call->state < AFS_CALL_COMPLETE && call->need_attention) {
700 call->need_attention = false;
701 afs_deliver_to_call(call);
704 afs_put_call(call);
710 struct afs_call *call = (struct afs_call *)user_call_ID;
712 call->rxcall = rxcall;
716 * Charge the incoming call preallocation.
722 struct afs_call *call = net->spare_incoming_call;
725 if (!call) {
726 call = afs_alloc_call(net, &afs_RXCMxxxx, GFP_KERNEL);
727 if (!call)
730 call->drop_ref = true;
731 call->async = true;
732 call->state = AFS_CALL_SV_AWAIT_OP_ID;
733 init_waitqueue_head(&call->waitq);
734 afs_extract_to_tmp(call);
740 (unsigned long)call,
742 call->debug_id) < 0)
744 call = NULL;
746 net->spare_incoming_call = call;
750 * Discard a preallocated call when a socket is shut down.
755 struct afs_call *call = (struct afs_call *)user_call_ID;
757 call->rxcall = NULL;
758 afs_put_call(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)
780 _enter("{%zu}", iov_iter_count(call->iter));
783 ret = afs_extract_data(call, true);
787 call->operation_ID = ntohl(call->tmp);
788 afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST);
790 /* ask the cache manager to route the call (it'll change the call type
792 if (!afs_cm_incoming_call(call))
795 trace_afs_cb_call(call);
799 return call->type->deliver(call);
803 * Advance the AFS call state when an RxRPC service call ends the transmit
810 struct afs_call *call = (struct afs_call *)call_user_ID;
812 afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK);
818 void afs_send_empty_reply(struct afs_call *call)
820 struct afs_net *net = call->net;
825 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, 0);
834 switch (rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, 0,
842 rxrpc_kernel_abort_call(net->socket, call->rxcall,
855 void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len)
857 struct afs_net *net = call->net;
864 rxrpc_kernel_set_tx_length(net->socket, call->rxcall, len);
875 n = rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, len,
885 rxrpc_kernel_abort_call(net->socket, call->rxcall,
895 int afs_extract_data(struct afs_call *call, bool want_more)
897 struct afs_net *net = call->net;
898 struct iov_iter *iter = call->iter;
904 call->type->name, call->iov_len, iov_iter_count(iter), want_more);
906 ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, iter,
907 &call->iov_len, want_more, &remote_abort,
908 &call->service_id);
909 trace_afs_receive_data(call, call->iter, want_more, ret);
913 state = READ_ONCE(call->state);
917 afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY);
920 afs_set_call_state(call, state, AFS_CALL_SV_REPLYING);
923 kdebug("prem complete %d", call->error);
924 return afs_io_error(call, afs_io_error_extract);
931 afs_set_call_complete(call, ret, remote_abort);
938 noinline int afs_protocol_error(struct afs_call *call,
941 trace_afs_protocol_error(call, cause);
942 if (call)
943 call->unmarshalling_error = true;