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ALSA: hda - Adding one more ALC255 pin definition for headset problem
[linux/fpc-iii.git] / net / rxrpc / output.c
blobf4bda06b7d2d9a4944a7bbc32ad5efbc4ba2708d
1 /* RxRPC packet transmission
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14 #include <linux/net.h>
15 #include <linux/gfp.h>
16 #include <linux/skbuff.h>
17 #include <linux/circ_buf.h>
18 #include <linux/export.h>
19 #include <net/sock.h>
20 #include <net/af_rxrpc.h>
21 #include "ar-internal.h"
22
23 /*
24 * Time till packet resend (in jiffies).
25 */
26 unsigned int rxrpc_resend_timeout = 4 * HZ;
27
28 static int rxrpc_send_data(struct rxrpc_sock *rx,
29 struct rxrpc_call *call,
30 struct msghdr *msg, size_t len);
31
32 /*
33 * extract control messages from the sendmsg() control buffer
34 */
35 static int rxrpc_sendmsg_cmsg(struct msghdr *msg,
36 unsigned long *user_call_ID,
37 enum rxrpc_command *command,
38 u32 *abort_code,
39 bool *_exclusive)
40 {
41 struct cmsghdr *cmsg;
42 bool got_user_ID = false;
43 int len;
44
45 *command = RXRPC_CMD_SEND_DATA;
46
47 if (msg->msg_controllen == 0)
48 return -EINVAL;
49
50 for_each_cmsghdr(cmsg, msg) {
51 if (!CMSG_OK(msg, cmsg))
52 return -EINVAL;
53
54 len = cmsg->cmsg_len - CMSG_ALIGN(sizeof(struct cmsghdr));
55 _debug("CMSG %d, %d, %d",
56 cmsg->cmsg_level, cmsg->cmsg_type, len);
57
58 if (cmsg->cmsg_level != SOL_RXRPC)
59 continue;
60
61 switch (cmsg->cmsg_type) {
62 case RXRPC_USER_CALL_ID:
63 if (msg->msg_flags & MSG_CMSG_COMPAT) {
64 if (len != sizeof(u32))
65 return -EINVAL;
66 *user_call_ID = *(u32 *) CMSG_DATA(cmsg);
67 } else {
68 if (len != sizeof(unsigned long))
69 return -EINVAL;
70 *user_call_ID = *(unsigned long *)
71 CMSG_DATA(cmsg);
72 }
73 _debug("User Call ID %lx", *user_call_ID);
74 got_user_ID = true;
75 break;
76
77 case RXRPC_ABORT:
78 if (*command != RXRPC_CMD_SEND_DATA)
79 return -EINVAL;
80 *command = RXRPC_CMD_SEND_ABORT;
81 if (len != sizeof(*abort_code))
82 return -EINVAL;
83 *abort_code = *(unsigned int *) CMSG_DATA(cmsg);
84 _debug("Abort %x", *abort_code);
85 if (*abort_code == 0)
86 return -EINVAL;
87 break;
88
89 case RXRPC_ACCEPT:
90 if (*command != RXRPC_CMD_SEND_DATA)
91 return -EINVAL;
92 *command = RXRPC_CMD_ACCEPT;
93 if (len != 0)
94 return -EINVAL;
95 break;
96
97 case RXRPC_EXCLUSIVE_CALL:
98 *_exclusive = true;
99 if (len != 0)
100 return -EINVAL;
101 break;
102 default:
103 return -EINVAL;
104 }
105 }
106
107 if (!got_user_ID)
108 return -EINVAL;
109 _leave(" = 0");
110 return 0;
111 }
112
113 /*
114 * abort a call, sending an ABORT packet to the peer
115 */
116 static void rxrpc_send_abort(struct rxrpc_call *call, u32 abort_code)
117 {
118 write_lock_bh(&call->state_lock);
119
120 if (call->state <= RXRPC_CALL_COMPLETE) {
121 call->state = RXRPC_CALL_LOCALLY_ABORTED;
122 call->local_abort = abort_code;
123 set_bit(RXRPC_CALL_EV_ABORT, &call->events);
124 del_timer_sync(&call->resend_timer);
125 del_timer_sync(&call->ack_timer);
126 clear_bit(RXRPC_CALL_EV_RESEND_TIMER, &call->events);
127 clear_bit(RXRPC_CALL_EV_ACK, &call->events);
128 clear_bit(RXRPC_CALL_RUN_RTIMER, &call->flags);
129 rxrpc_queue_call(call);
130 }
131
132 write_unlock_bh(&call->state_lock);
133 }
134
135 /*
136 * Create a new client call for sendmsg().
137 */
138 static struct rxrpc_call *
139 rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg,
140 unsigned long user_call_ID, bool exclusive)
141 {
142 struct rxrpc_conn_parameters cp;
143 struct rxrpc_call *call;
144 struct key *key;
145
146 DECLARE_SOCKADDR(struct sockaddr_rxrpc *, srx, msg->msg_name);
147
148 _enter("");
149
150 if (!msg->msg_name)
151 return ERR_PTR(-EDESTADDRREQ);
152
153 key = rx->key;
154 if (key && !rx->key->payload.data[0])
155 key = NULL;
156
157 memset(&cp, 0, sizeof(cp));
158 cp.local = rx->local;
159 cp.key = rx->key;
160 cp.security_level = rx->min_sec_level;
161 cp.exclusive = rx->exclusive | exclusive;
162 cp.service_id = srx->srx_service;
163 call = rxrpc_new_client_call(rx, &cp, srx, user_call_ID, GFP_KERNEL);
164
165 _leave(" = %p\n", call);
166 return call;
167 }
168
169 /*
170 * send a message forming part of a client call through an RxRPC socket
171 * - caller holds the socket locked
172 * - the socket may be either a client socket or a server socket
173 */
174 int rxrpc_do_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, size_t len)
175 {
176 enum rxrpc_command cmd;
177 struct rxrpc_call *call;
178 unsigned long user_call_ID = 0;
179 bool exclusive = false;
180 u32 abort_code = 0;
181 int ret;
182
183 _enter("");
184
185 ret = rxrpc_sendmsg_cmsg(msg, &user_call_ID, &cmd, &abort_code,
186 &exclusive);
187 if (ret < 0)
188 return ret;
189
190 if (cmd == RXRPC_CMD_ACCEPT) {
191 if (rx->sk.sk_state != RXRPC_SERVER_LISTENING)
192 return -EINVAL;
193 call = rxrpc_accept_call(rx, user_call_ID);
194 if (IS_ERR(call))
195 return PTR_ERR(call);
196 rxrpc_put_call(call);
197 return 0;
198 }
199
200 call = rxrpc_find_call_by_user_ID(rx, user_call_ID);
201 if (!call) {
202 if (cmd != RXRPC_CMD_SEND_DATA)
203 return -EBADSLT;
204 call = rxrpc_new_client_call_for_sendmsg(rx, msg, user_call_ID,
205 exclusive);
206 if (IS_ERR(call))
207 return PTR_ERR(call);
208 }
209
210 _debug("CALL %d USR %lx ST %d on CONN %p",
211 call->debug_id, call->user_call_ID, call->state, call->conn);
212
213 if (call->state >= RXRPC_CALL_COMPLETE) {
214 /* it's too late for this call */
215 ret = -ECONNRESET;
216 } else if (cmd == RXRPC_CMD_SEND_ABORT) {
217 rxrpc_send_abort(call, abort_code);
218 ret = 0;
219 } else if (cmd != RXRPC_CMD_SEND_DATA) {
220 ret = -EINVAL;
221 } else if (!call->in_clientflag &&
222 call->state != RXRPC_CALL_CLIENT_SEND_REQUEST) {
223 /* request phase complete for this client call */
224 ret = -EPROTO;
225 } else if (call->in_clientflag &&
226 call->state != RXRPC_CALL_SERVER_ACK_REQUEST &&
227 call->state != RXRPC_CALL_SERVER_SEND_REPLY) {
228 /* Reply phase not begun or not complete for service call. */
229 ret = -EPROTO;
230 } else {
231 ret = rxrpc_send_data(rx, call, msg, len);
232 }
233
234 rxrpc_put_call(call);
235 _leave(" = %d", ret);
236 return ret;
237 }
238
239 /**
240 * rxrpc_kernel_send_data - Allow a kernel service to send data on a call
241 * @call: The call to send data through
242 * @msg: The data to send
243 * @len: The amount of data to send
244 *
245 * Allow a kernel service to send data on a call. The call must be in an state
246 * appropriate to sending data. No control data should be supplied in @msg,
247 * nor should an address be supplied. MSG_MORE should be flagged if there's
248 * more data to come, otherwise this data will end the transmission phase.
249 */
250 int rxrpc_kernel_send_data(struct rxrpc_call *call, struct msghdr *msg,
251 size_t len)
252 {
253 int ret;
254
255 _enter("{%d,%s},", call->debug_id, rxrpc_call_states[call->state]);
256
257 ASSERTCMP(msg->msg_name, ==, NULL);
258 ASSERTCMP(msg->msg_control, ==, NULL);
259
260 lock_sock(&call->socket->sk);
261
262 _debug("CALL %d USR %lx ST %d on CONN %p",
263 call->debug_id, call->user_call_ID, call->state, call->conn);
264
265 if (call->state >= RXRPC_CALL_COMPLETE) {
266 ret = -ESHUTDOWN; /* it's too late for this call */
267 } else if (call->state != RXRPC_CALL_CLIENT_SEND_REQUEST &&
268 call->state != RXRPC_CALL_SERVER_ACK_REQUEST &&
269 call->state != RXRPC_CALL_SERVER_SEND_REPLY) {
270 ret = -EPROTO; /* request phase complete for this client call */
271 } else {
272 ret = rxrpc_send_data(call->socket, call, msg, len);
273 }
274
275 release_sock(&call->socket->sk);
276 _leave(" = %d", ret);
277 return ret;
278 }
279
280 EXPORT_SYMBOL(rxrpc_kernel_send_data);
281
282 /**
283 * rxrpc_kernel_abort_call - Allow a kernel service to abort a call
284 * @call: The call to be aborted
285 * @abort_code: The abort code to stick into the ABORT packet
286 *
287 * Allow a kernel service to abort a call, if it's still in an abortable state.
288 */
289 void rxrpc_kernel_abort_call(struct rxrpc_call *call, u32 abort_code)
290 {
291 _enter("{%d},%d", call->debug_id, abort_code);
292
293 lock_sock(&call->socket->sk);
294
295 _debug("CALL %d USR %lx ST %d on CONN %p",
296 call->debug_id, call->user_call_ID, call->state, call->conn);
297
298 if (call->state < RXRPC_CALL_COMPLETE)
299 rxrpc_send_abort(call, abort_code);
300
301 release_sock(&call->socket->sk);
302 _leave("");
303 }
304
305 EXPORT_SYMBOL(rxrpc_kernel_abort_call);
306
307 /*
308 * send a packet through the transport endpoint
309 */
310 int rxrpc_send_data_packet(struct rxrpc_connection *conn, struct sk_buff *skb)
311 {
312 struct kvec iov[1];
313 struct msghdr msg;
314 int ret, opt;
315
316 _enter(",{%d}", skb->len);
317
318 iov[0].iov_base = skb->head;
319 iov[0].iov_len = skb->len;
320
321 msg.msg_name = &conn->params.peer->srx.transport;
322 msg.msg_namelen = conn->params.peer->srx.transport_len;
323 msg.msg_control = NULL;
324 msg.msg_controllen = 0;
325 msg.msg_flags = 0;
326
327 /* send the packet with the don't fragment bit set if we currently
328 * think it's small enough */
329 if (skb->len - sizeof(struct rxrpc_wire_header) < conn->params.peer->maxdata) {
330 down_read(&conn->params.local->defrag_sem);
331 /* send the packet by UDP
332 * - returns -EMSGSIZE if UDP would have to fragment the packet
333 * to go out of the interface
334 * - in which case, we'll have processed the ICMP error
335 * message and update the peer record
336 */
337 ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 1,
338 iov[0].iov_len);
339
340 up_read(&conn->params.local->defrag_sem);
341 if (ret == -EMSGSIZE)
342 goto send_fragmentable;
343
344 _leave(" = %d [%u]", ret, conn->params.peer->maxdata);
345 return ret;
346 }
347
348 send_fragmentable:
349 /* attempt to send this message with fragmentation enabled */
350 _debug("send fragment");
351
352 down_write(&conn->params.local->defrag_sem);
353
354 switch (conn->params.local->srx.transport.family) {
355 case AF_INET:
356 opt = IP_PMTUDISC_DONT;
357 ret = kernel_setsockopt(conn->params.local->socket,
358 SOL_IP, IP_MTU_DISCOVER,
359 (char *)&opt, sizeof(opt));
360 if (ret == 0) {
361 ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 1,
362 iov[0].iov_len);
363
364 opt = IP_PMTUDISC_DO;
365 kernel_setsockopt(conn->params.local->socket, SOL_IP,
366 IP_MTU_DISCOVER,
367 (char *)&opt, sizeof(opt));
368 }
369 break;
370 }
371
372 up_write(&conn->params.local->defrag_sem);
373 _leave(" = %d [frag %u]", ret, conn->params.peer->maxdata);
374 return ret;
375 }
376
377 /*
378 * wait for space to appear in the transmit/ACK window
379 * - caller holds the socket locked
380 */
381 static int rxrpc_wait_for_tx_window(struct rxrpc_sock *rx,
382 struct rxrpc_call *call,
383 long *timeo)
384 {
385 DECLARE_WAITQUEUE(myself, current);
386 int ret;
387
388 _enter(",{%d},%ld",
389 CIRC_SPACE(call->acks_head, ACCESS_ONCE(call->acks_tail),
390 call->acks_winsz),
391 *timeo);
392
393 add_wait_queue(&call->tx_waitq, &myself);
394
395 for (;;) {
396 set_current_state(TASK_INTERRUPTIBLE);
397 ret = 0;
398 if (CIRC_SPACE(call->acks_head, ACCESS_ONCE(call->acks_tail),
399 call->acks_winsz) > 0)
400 break;
401 if (signal_pending(current)) {
402 ret = sock_intr_errno(*timeo);
403 break;
404 }
405
406 release_sock(&rx->sk);
407 *timeo = schedule_timeout(*timeo);
408 lock_sock(&rx->sk);
409 }
410
411 remove_wait_queue(&call->tx_waitq, &myself);
412 set_current_state(TASK_RUNNING);
413 _leave(" = %d", ret);
414 return ret;
415 }
416
417 /*
418 * attempt to schedule an instant Tx resend
419 */
420 static inline void rxrpc_instant_resend(struct rxrpc_call *call)
421 {
422 read_lock_bh(&call->state_lock);
423 if (try_to_del_timer_sync(&call->resend_timer) >= 0) {
424 clear_bit(RXRPC_CALL_RUN_RTIMER, &call->flags);
425 if (call->state < RXRPC_CALL_COMPLETE &&
426 !test_and_set_bit(RXRPC_CALL_EV_RESEND_TIMER, &call->events))
427 rxrpc_queue_call(call);
428 }
429 read_unlock_bh(&call->state_lock);
430 }
431
432 /*
433 * queue a packet for transmission, set the resend timer and attempt
434 * to send the packet immediately
435 */
436 static void rxrpc_queue_packet(struct rxrpc_call *call, struct sk_buff *skb,
437 bool last)
438 {
439 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
440 int ret;
441
442 _net("queue skb %p [%d]", skb, call->acks_head);
443
444 ASSERT(call->acks_window != NULL);
445 call->acks_window[call->acks_head] = (unsigned long) skb;
446 smp_wmb();
447 call->acks_head = (call->acks_head + 1) & (call->acks_winsz - 1);
448
449 if (last || call->state == RXRPC_CALL_SERVER_ACK_REQUEST) {
450 _debug("________awaiting reply/ACK__________");
451 write_lock_bh(&call->state_lock);
452 switch (call->state) {
453 case RXRPC_CALL_CLIENT_SEND_REQUEST:
454 call->state = RXRPC_CALL_CLIENT_AWAIT_REPLY;
455 break;
456 case RXRPC_CALL_SERVER_ACK_REQUEST:
457 call->state = RXRPC_CALL_SERVER_SEND_REPLY;
458 if (!last)
459 break;
460 case RXRPC_CALL_SERVER_SEND_REPLY:
461 call->state = RXRPC_CALL_SERVER_AWAIT_ACK;
462 break;
463 default:
464 break;
465 }
466 write_unlock_bh(&call->state_lock);
467 }
468
469 _proto("Tx DATA %%%u { #%u }", sp->hdr.serial, sp->hdr.seq);
470
471 sp->need_resend = false;
472 sp->resend_at = jiffies + rxrpc_resend_timeout;
473 if (!test_and_set_bit(RXRPC_CALL_RUN_RTIMER, &call->flags)) {
474 _debug("run timer");
475 call->resend_timer.expires = sp->resend_at;
476 add_timer(&call->resend_timer);
477 }
478
479 /* attempt to cancel the rx-ACK timer, deferring reply transmission if
480 * we're ACK'ing the request phase of an incoming call */
481 ret = -EAGAIN;
482 if (try_to_del_timer_sync(&call->ack_timer) >= 0) {
483 /* the packet may be freed by rxrpc_process_call() before this
484 * returns */
485 ret = rxrpc_send_data_packet(call->conn, skb);
486 _net("sent skb %p", skb);
487 } else {
488 _debug("failed to delete ACK timer");
489 }
490
491 if (ret < 0) {
492 _debug("need instant resend %d", ret);
493 sp->need_resend = true;
494 rxrpc_instant_resend(call);
495 }
496
497 _leave("");
498 }
499
500 /*
501 * Convert a host-endian header into a network-endian header.
502 */
503 static void rxrpc_insert_header(struct sk_buff *skb)
504 {
505 struct rxrpc_wire_header whdr;
506 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
507
508 whdr.epoch = htonl(sp->hdr.epoch);
509 whdr.cid = htonl(sp->hdr.cid);
510 whdr.callNumber = htonl(sp->hdr.callNumber);
511 whdr.seq = htonl(sp->hdr.seq);
512 whdr.serial = htonl(sp->hdr.serial);
513 whdr.type = sp->hdr.type;
514 whdr.flags = sp->hdr.flags;
515 whdr.userStatus = sp->hdr.userStatus;
516 whdr.securityIndex = sp->hdr.securityIndex;
517 whdr._rsvd = htons(sp->hdr._rsvd);
518 whdr.serviceId = htons(sp->hdr.serviceId);
519
520 memcpy(skb->head, &whdr, sizeof(whdr));
521 }
522
523 /*
524 * send data through a socket
525 * - must be called in process context
526 * - caller holds the socket locked
527 */
528 static int rxrpc_send_data(struct rxrpc_sock *rx,
529 struct rxrpc_call *call,
530 struct msghdr *msg, size_t len)
531 {
532 struct rxrpc_skb_priv *sp;
533 struct sk_buff *skb;
534 struct sock *sk = &rx->sk;
535 long timeo;
536 bool more;
537 int ret, copied;
538
539 timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
540
541 /* this should be in poll */
542 sk_clear_bit(SOCKWQ_ASYNC_NOSPACE, sk);
543
544 if (sk->sk_err || (sk->sk_shutdown & SEND_SHUTDOWN))
545 return -EPIPE;
546
547 more = msg->msg_flags & MSG_MORE;
548
549 skb = call->tx_pending;
550 call->tx_pending = NULL;
551
552 copied = 0;
553 do {
554 if (!skb) {
555 size_t size, chunk, max, space;
556
557 _debug("alloc");
558
559 if (CIRC_SPACE(call->acks_head,
560 ACCESS_ONCE(call->acks_tail),
561 call->acks_winsz) <= 0) {
562 ret = -EAGAIN;
563 if (msg->msg_flags & MSG_DONTWAIT)
564 goto maybe_error;
565 ret = rxrpc_wait_for_tx_window(rx, call,
566 &timeo);
567 if (ret < 0)
568 goto maybe_error;
569 }
570
571 max = call->conn->params.peer->maxdata;
572 max -= call->conn->security_size;
573 max &= ~(call->conn->size_align - 1UL);
574
575 chunk = max;
576 if (chunk > msg_data_left(msg) && !more)
577 chunk = msg_data_left(msg);
578
579 space = chunk + call->conn->size_align;
580 space &= ~(call->conn->size_align - 1UL);
581
582 size = space + call->conn->header_size;
583
584 _debug("SIZE: %zu/%zu/%zu", chunk, space, size);
585
586 /* create a buffer that we can retain until it's ACK'd */
587 skb = sock_alloc_send_skb(
588 sk, size, msg->msg_flags & MSG_DONTWAIT, &ret);
589 if (!skb)
590 goto maybe_error;
591
592 rxrpc_new_skb(skb);
593
594 _debug("ALLOC SEND %p", skb);
595
596 ASSERTCMP(skb->mark, ==, 0);
597
598 _debug("HS: %u", call->conn->header_size);
599 skb_reserve(skb, call->conn->header_size);
600 skb->len += call->conn->header_size;
601
602 sp = rxrpc_skb(skb);
603 sp->remain = chunk;
604 if (sp->remain > skb_tailroom(skb))
605 sp->remain = skb_tailroom(skb);
606
607 _net("skb: hr %d, tr %d, hl %d, rm %d",
608 skb_headroom(skb),
609 skb_tailroom(skb),
610 skb_headlen(skb),
611 sp->remain);
612
613 skb->ip_summed = CHECKSUM_UNNECESSARY;
614 }
615
616 _debug("append");
617 sp = rxrpc_skb(skb);
618
619 /* append next segment of data to the current buffer */
620 if (msg_data_left(msg) > 0) {
621 int copy = skb_tailroom(skb);
622 ASSERTCMP(copy, >, 0);
623 if (copy > msg_data_left(msg))
624 copy = msg_data_left(msg);
625 if (copy > sp->remain)
626 copy = sp->remain;
627
628 _debug("add");
629 ret = skb_add_data(skb, &msg->msg_iter, copy);
630 _debug("added");
631 if (ret < 0)
632 goto efault;
633 sp->remain -= copy;
634 skb->mark += copy;
635 copied += copy;
636 }
637
638 /* check for the far side aborting the call or a network error
639 * occurring */
640 if (call->state > RXRPC_CALL_COMPLETE)
641 goto call_aborted;
642
643 /* add the packet to the send queue if it's now full */
644 if (sp->remain <= 0 ||
645 (msg_data_left(msg) == 0 && !more)) {
646 struct rxrpc_connection *conn = call->conn;
647 uint32_t seq;
648 size_t pad;
649
650 /* pad out if we're using security */
651 if (conn->security_ix) {
652 pad = conn->security_size + skb->mark;
653 pad = conn->size_align - pad;
654 pad &= conn->size_align - 1;
655 _debug("pad %zu", pad);
656 if (pad)
657 memset(skb_put(skb, pad), 0, pad);
658 }
659
660 seq = atomic_inc_return(&call->sequence);
661
662 sp->hdr.epoch = conn->proto.epoch;
663 sp->hdr.cid = call->cid;
664 sp->hdr.callNumber = call->call_id;
665 sp->hdr.seq = seq;
666 sp->hdr.serial = atomic_inc_return(&conn->serial);
667 sp->hdr.type = RXRPC_PACKET_TYPE_DATA;
668 sp->hdr.userStatus = 0;
669 sp->hdr.securityIndex = conn->security_ix;
670 sp->hdr._rsvd = 0;
671 sp->hdr.serviceId = call->service_id;
672
673 sp->hdr.flags = conn->out_clientflag;
674 if (msg_data_left(msg) == 0 && !more)
675 sp->hdr.flags |= RXRPC_LAST_PACKET;
676 else if (CIRC_SPACE(call->acks_head,
677 ACCESS_ONCE(call->acks_tail),
678 call->acks_winsz) > 1)
679 sp->hdr.flags |= RXRPC_MORE_PACKETS;
680 if (more && seq & 1)
681 sp->hdr.flags |= RXRPC_REQUEST_ACK;
682
683 ret = conn->security->secure_packet(
684 call, skb, skb->mark,
685 skb->head + sizeof(struct rxrpc_wire_header));
686 if (ret < 0)
687 goto out;
688
689 rxrpc_insert_header(skb);
690 rxrpc_queue_packet(call, skb, !msg_data_left(msg) && !more);
691 skb = NULL;
692 }
693 } while (msg_data_left(msg) > 0);
694
695 success:
696 ret = copied;
697 out:
698 call->tx_pending = skb;
699 _leave(" = %d", ret);
700 return ret;
701
702 call_aborted:
703 rxrpc_free_skb(skb);
704 if (call->state == RXRPC_CALL_NETWORK_ERROR)
705 ret = call->error_report < RXRPC_LOCAL_ERROR_OFFSET ?
706 call->error_report :
707 call->error_report - RXRPC_LOCAL_ERROR_OFFSET;
708 else
709 ret = -ECONNABORTED;
710 _leave(" = %d", ret);
711 return ret;
712
713 maybe_error:
714 if (copied)
715 goto success;
716 goto out;
717
718 efault:
719 ret = -EFAULT;
720 goto out;
721 }
Linux with added FPC-III support