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()
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 + 1, 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()
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()
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()
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()
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()
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()
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()
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()
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()
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()
509 			rxrpc_kernel_abort_call(call->net->socket, call->rxcall,  in afs_deliver_to_call()
519 			rxrpc_kernel_abort_call(call->net->socket, call->rxcall,  in afs_deliver_to_call()
526 	if (state == AFS_CALL_COMPLETE && call->incoming)  in afs_deliver_to_call()
527 		afs_put_call(call);  in afs_deliver_to_call()
535 	afs_set_call_complete(call, ret, remote_abort);  in afs_deliver_to_call()
543 static long afs_wait_for_call_to_complete(struct afs_call *call,  in afs_wait_for_call_to_complete()  argument
555 	rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);  in afs_wait_for_call_to_complete()
561 	last_life = rxrpc_kernel_check_life(call->net->socket, call->rxcall);  in afs_wait_for_call_to_complete()
563 	add_wait_queue(&call->waitq, &myself);  in afs_wait_for_call_to_complete()
568 		if (!afs_check_call_state(call, AFS_CALL_COMPLETE) &&  in afs_wait_for_call_to_complete()
569 		    call->need_attention) {  in afs_wait_for_call_to_complete()
570 			call->need_attention = false;  in afs_wait_for_call_to_complete()
572 			afs_deliver_to_call(call);  in afs_wait_for_call_to_complete()
576 		if (afs_check_call_state(call, AFS_CALL_COMPLETE))  in afs_wait_for_call_to_complete()
579 		life = rxrpc_kernel_check_life(call->net->socket, call->rxcall);  in afs_wait_for_call_to_complete()
592 	remove_wait_queue(&call->waitq, &myself);  in afs_wait_for_call_to_complete()
596 	if (!afs_check_call_state(call, AFS_CALL_COMPLETE)) {  in afs_wait_for_call_to_complete()
598 		if (rxrpc_kernel_abort_call(call->net->socket, call->rxcall,  in afs_wait_for_call_to_complete()
600 			afs_set_call_complete(call, -EINTR, 0);  in afs_wait_for_call_to_complete()
603 	spin_lock_bh(&call->state_lock);  in afs_wait_for_call_to_complete()
604 	ac->abort_code = call->abort_code;  in afs_wait_for_call_to_complete()
605 	ac->error = call->error;  in afs_wait_for_call_to_complete()
606 	spin_unlock_bh(&call->state_lock);  in afs_wait_for_call_to_complete()
611 		if (call->ret_reply0) {  in afs_wait_for_call_to_complete()
612 			ret = (long)call->reply[0];  in afs_wait_for_call_to_complete()
613 			call->reply[0] = NULL;  in afs_wait_for_call_to_complete()
622 	afs_put_call(call);  in afs_wait_for_call_to_complete()
633 	struct afs_call *call = (struct afs_call *)call_user_ID;  in afs_wake_up_call_waiter()  local
635 	call->need_attention = true;  in afs_wake_up_call_waiter()
636 	wake_up(&call->waitq);  in afs_wake_up_call_waiter()
645 	struct afs_call *call = (struct afs_call *)call_user_ID;  in afs_wake_up_async_call()  local
648 	trace_afs_notify_call(rxcall, call);  in afs_wake_up_async_call()
649 	call->need_attention = true;  in afs_wake_up_async_call()
651 	u = atomic_fetch_add_unless(&call->usage, 1, 0);  in afs_wake_up_async_call()
653 		trace_afs_call(call, afs_call_trace_wake, u,  in afs_wake_up_async_call()
654 			       atomic_read(&call->net->nr_outstanding_calls),  in afs_wake_up_async_call()
657 		if (!queue_work(afs_async_calls, &call->async_work))  in afs_wake_up_async_call()
658 			afs_put_call(call);  in afs_wake_up_async_call()
668 	struct afs_call *call = container_of(work, struct afs_call, async_work);  in afs_delete_async_call()  local
672 	afs_put_call(call);  in afs_delete_async_call()
683 	struct afs_call *call = container_of(work, struct afs_call, async_work);  in afs_process_async_call()  local
687 	if (call->state < AFS_CALL_COMPLETE && call->need_attention) {  in afs_process_async_call()
688 		call->need_attention = false;  in afs_process_async_call()
689 		afs_deliver_to_call(call);  in afs_process_async_call()
692 	if (call->state == AFS_CALL_COMPLETE) {  in afs_process_async_call()
697 		call->async_work.func = afs_delete_async_call;  in afs_process_async_call()
698 		if (!queue_work(afs_async_calls, &call->async_work))  in afs_process_async_call()
699 			afs_put_call(call);  in afs_process_async_call()
702 	afs_put_call(call);  in afs_process_async_call()
708 	struct afs_call *call = (struct afs_call *)user_call_ID;  in afs_rx_attach()  local
710 	call->rxcall = rxcall;  in afs_rx_attach()
720 	struct afs_call *call = net->spare_incoming_call;  in afs_charge_preallocation()  local
723 		if (!call) {  in afs_charge_preallocation()
724 			call = afs_alloc_call(net, &afs_RXCMxxxx, GFP_KERNEL);  in afs_charge_preallocation()
725 			if (!call)  in afs_charge_preallocation()
728 			call->async = true;  in afs_charge_preallocation()
729 			call->state = AFS_CALL_SV_AWAIT_OP_ID;  in afs_charge_preallocation()
730 			init_waitqueue_head(&call->waitq);  in afs_charge_preallocation()
736 					       (unsigned long)call,  in afs_charge_preallocation()
738 					       call->debug_id) < 0)  in afs_charge_preallocation()
740 		call = NULL;  in afs_charge_preallocation()
742 	net->spare_incoming_call = call;  in afs_charge_preallocation()
751 	struct afs_call *call = (struct afs_call *)user_call_ID;  in afs_rx_discard_new_call()  local
753 	call->rxcall = NULL;  in afs_rx_discard_new_call()
754 	afs_put_call(call);  in afs_rx_discard_new_call()
772 static int afs_deliver_cm_op_id(struct afs_call *call)  in afs_deliver_cm_op_id()  argument
776 	_enter("{%zu}", call->offset);  in afs_deliver_cm_op_id()
778 	ASSERTCMP(call->offset, <, 4);  in afs_deliver_cm_op_id()
781 	ret = afs_extract_data(call, &call->tmp, 4, true);  in afs_deliver_cm_op_id()
785 	call->operation_ID = ntohl(call->tmp);  in afs_deliver_cm_op_id()
786 	afs_set_call_state(call, AFS_CALL_SV_AWAIT_OP_ID, AFS_CALL_SV_AWAIT_REQUEST);  in afs_deliver_cm_op_id()
787 	call->offset = 0;  in afs_deliver_cm_op_id()
791 	if (!afs_cm_incoming_call(call))  in afs_deliver_cm_op_id()
794 	trace_afs_cb_call(call);  in afs_deliver_cm_op_id()
798 	return call->type->deliver(call);  in afs_deliver_cm_op_id()
809 	struct afs_call *call = (struct afs_call *)call_user_ID;  in afs_notify_end_reply_tx()  local
811 	afs_set_call_state(call, AFS_CALL_SV_REPLYING, AFS_CALL_SV_AWAIT_ACK);  in afs_notify_end_reply_tx()
817 void afs_send_empty_reply(struct afs_call *call)  in afs_send_empty_reply()  argument
819 	struct afs_net *net = call->net;  in afs_send_empty_reply()
824 	rxrpc_kernel_set_tx_length(net->socket, call->rxcall, 0);  in afs_send_empty_reply()
833 	switch (rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, 0,  in afs_send_empty_reply()
841 		rxrpc_kernel_abort_call(net->socket, call->rxcall,  in afs_send_empty_reply()
852 void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len)  in afs_send_simple_reply()  argument
854 	struct afs_net *net = call->net;  in afs_send_simple_reply()
861 	rxrpc_kernel_set_tx_length(net->socket, call->rxcall, len);  in afs_send_simple_reply()
872 	n = rxrpc_kernel_send_data(net->socket, call->rxcall, &msg, len,  in afs_send_simple_reply()
882 		rxrpc_kernel_abort_call(net->socket, call->rxcall,  in afs_send_simple_reply()
891 int afs_extract_data(struct afs_call *call, void *buf, size_t count,  in afs_extract_data()  argument
894 	struct afs_net *net = call->net;  in afs_extract_data()
902 	       call->type->name, call->offset, count, want_more);  in afs_extract_data()
904 	ASSERTCMP(call->offset, <=, count);  in afs_extract_data()
906 	iov.iov_base = buf + call->offset;  in afs_extract_data()
907 	iov.iov_len = count - call->offset;  in afs_extract_data()
908 	iov_iter_kvec(&iter, ITER_KVEC | READ, &iov, 1, count - call->offset);  in afs_extract_data()
910 	ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, &iter,  in afs_extract_data()
912 				     &call->service_id);  in afs_extract_data()
913 	call->offset += (count - call->offset) - iov_iter_count(&iter);  in afs_extract_data()
914 	trace_afs_recv_data(call, count, call->offset, want_more, ret);  in afs_extract_data()
918 	state = READ_ONCE(call->state);  in afs_extract_data()
922 			afs_set_call_state(call, state, AFS_CALL_CL_PROC_REPLY);  in afs_extract_data()
925 			afs_set_call_state(call, state, AFS_CALL_SV_REPLYING);  in afs_extract_data()
928 			kdebug("prem complete %d", call->error);  in afs_extract_data()
936 	afs_set_call_complete(call, ret, remote_abort);  in afs_extract_data()
943 noinline int afs_protocol_error(struct afs_call *call, int error)  in afs_protocol_error()  argument
945 	trace_afs_protocol_error(call, error, __builtin_return_address(0));  in afs_protocol_error()