Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
17926a79 DH |
2 | /* connection-level event handling |
3 | * | |
4 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
5 | * Written by David Howells (dhowells@redhat.com) | |
17926a79 DH |
6 | */ |
7 | ||
9b6d5398 JP |
8 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
9 | ||
17926a79 DH |
10 | #include <linux/module.h> |
11 | #include <linux/net.h> | |
12 | #include <linux/skbuff.h> | |
13 | #include <linux/errqueue.h> | |
17926a79 DH |
14 | #include <net/sock.h> |
15 | #include <net/af_rxrpc.h> | |
16 | #include <net/ip.h> | |
17 | #include "ar-internal.h" | |
18 | ||
18bfeba5 DH |
19 | /* |
20 | * Retransmit terminal ACK or ABORT of the previous call. | |
21 | */ | |
f5c17aae | 22 | static void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn, |
3136ef49 DH |
23 | struct sk_buff *skb, |
24 | unsigned int channel) | |
18bfeba5 | 25 | { |
3136ef49 | 26 | struct rxrpc_skb_priv *sp = skb ? rxrpc_skb(skb) : NULL; |
18bfeba5 DH |
27 | struct rxrpc_channel *chan; |
28 | struct msghdr msg; | |
5fc62f6a | 29 | struct kvec iov[3]; |
18bfeba5 DH |
30 | struct { |
31 | struct rxrpc_wire_header whdr; | |
32 | union { | |
5fc62f6a DH |
33 | __be32 abort_code; |
34 | struct rxrpc_ackpacket ack; | |
18bfeba5 DH |
35 | }; |
36 | } __attribute__((packed)) pkt; | |
5fc62f6a | 37 | struct rxrpc_ackinfo ack_info; |
18bfeba5 | 38 | size_t len; |
6b47fe1d | 39 | int ret, ioc; |
5fc62f6a | 40 | u32 serial, mtu, call_id, padding; |
18bfeba5 DH |
41 | |
42 | _enter("%d", conn->debug_id); | |
43 | ||
3136ef49 | 44 | chan = &conn->channels[channel]; |
18bfeba5 DH |
45 | |
46 | /* If the last call got moved on whilst we were waiting to run, just | |
47 | * ignore this packet. | |
48 | */ | |
49 | call_id = READ_ONCE(chan->last_call); | |
50 | /* Sync with __rxrpc_disconnect_call() */ | |
51 | smp_rmb(); | |
3136ef49 | 52 | if (skb && call_id != sp->hdr.callNumber) |
18bfeba5 DH |
53 | return; |
54 | ||
55 | msg.msg_name = &conn->params.peer->srx.transport; | |
56 | msg.msg_namelen = conn->params.peer->srx.transport_len; | |
57 | msg.msg_control = NULL; | |
58 | msg.msg_controllen = 0; | |
59 | msg.msg_flags = 0; | |
60 | ||
5fc62f6a DH |
61 | iov[0].iov_base = &pkt; |
62 | iov[0].iov_len = sizeof(pkt.whdr); | |
63 | iov[1].iov_base = &padding; | |
64 | iov[1].iov_len = 3; | |
65 | iov[2].iov_base = &ack_info; | |
66 | iov[2].iov_len = sizeof(ack_info); | |
67 | ||
3136ef49 | 68 | pkt.whdr.epoch = htonl(conn->proto.epoch); |
fb1967a6 | 69 | pkt.whdr.cid = htonl(conn->proto.cid | channel); |
3136ef49 | 70 | pkt.whdr.callNumber = htonl(call_id); |
18bfeba5 DH |
71 | pkt.whdr.seq = 0; |
72 | pkt.whdr.type = chan->last_type; | |
73 | pkt.whdr.flags = conn->out_clientflag; | |
74 | pkt.whdr.userStatus = 0; | |
75 | pkt.whdr.securityIndex = conn->security_ix; | |
76 | pkt.whdr._rsvd = 0; | |
68d6d1ae | 77 | pkt.whdr.serviceId = htons(conn->service_id); |
18bfeba5 DH |
78 | |
79 | len = sizeof(pkt.whdr); | |
80 | switch (chan->last_type) { | |
81 | case RXRPC_PACKET_TYPE_ABORT: | |
5fc62f6a DH |
82 | pkt.abort_code = htonl(chan->last_abort); |
83 | iov[0].iov_len += sizeof(pkt.abort_code); | |
84 | len += sizeof(pkt.abort_code); | |
85 | ioc = 1; | |
18bfeba5 DH |
86 | break; |
87 | ||
88 | case RXRPC_PACKET_TYPE_ACK: | |
89 | mtu = conn->params.peer->if_mtu; | |
90 | mtu -= conn->params.peer->hdrsize; | |
91 | pkt.ack.bufferSpace = 0; | |
3136ef49 DH |
92 | pkt.ack.maxSkew = htons(skb ? skb->priority : 0); |
93 | pkt.ack.firstPacket = htonl(chan->last_seq + 1); | |
94 | pkt.ack.previousPacket = htonl(chan->last_seq); | |
95 | pkt.ack.serial = htonl(skb ? sp->hdr.serial : 0); | |
96 | pkt.ack.reason = skb ? RXRPC_ACK_DUPLICATE : RXRPC_ACK_IDLE; | |
18bfeba5 | 97 | pkt.ack.nAcks = 0; |
5fc62f6a DH |
98 | ack_info.rxMTU = htonl(rxrpc_rx_mtu); |
99 | ack_info.maxMTU = htonl(mtu); | |
100 | ack_info.rwind = htonl(rxrpc_rx_window_size); | |
101 | ack_info.jumbo_max = htonl(rxrpc_rx_jumbo_max); | |
57494343 | 102 | pkt.whdr.flags |= RXRPC_SLOW_START_OK; |
5fc62f6a DH |
103 | padding = 0; |
104 | iov[0].iov_len += sizeof(pkt.ack); | |
105 | len += sizeof(pkt.ack) + 3 + sizeof(ack_info); | |
106 | ioc = 3; | |
18bfeba5 | 107 | break; |
5fc62f6a DH |
108 | |
109 | default: | |
110 | return; | |
18bfeba5 DH |
111 | } |
112 | ||
113 | /* Resync with __rxrpc_disconnect_call() and check that the last call | |
114 | * didn't get advanced whilst we were filling out the packets. | |
115 | */ | |
116 | smp_rmb(); | |
117 | if (READ_ONCE(chan->last_call) != call_id) | |
118 | return; | |
119 | ||
18bfeba5 DH |
120 | serial = atomic_inc_return(&conn->serial); |
121 | pkt.whdr.serial = htonl(serial); | |
122 | ||
123 | switch (chan->last_type) { | |
124 | case RXRPC_PACKET_TYPE_ABORT: | |
64753092 | 125 | _proto("Tx ABORT %%%u { %d } [re]", serial, conn->abort_code); |
18bfeba5 DH |
126 | break; |
127 | case RXRPC_PACKET_TYPE_ACK: | |
4764c0da | 128 | trace_rxrpc_tx_ack(chan->call_debug_id, serial, |
f3f8337c DH |
129 | ntohl(pkt.ack.firstPacket), |
130 | ntohl(pkt.ack.serial), | |
131 | pkt.ack.reason, 0); | |
18bfeba5 DH |
132 | _proto("Tx ACK %%%u [re]", serial); |
133 | break; | |
134 | } | |
135 | ||
6b47fe1d | 136 | ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, ioc, len); |
330bdcfa | 137 | conn->params.peer->last_tx_at = ktime_get_seconds(); |
6b47fe1d | 138 | if (ret < 0) |
4764c0da DH |
139 | trace_rxrpc_tx_fail(chan->call_debug_id, serial, ret, |
140 | rxrpc_tx_point_call_final_resend); | |
141 | else | |
142 | trace_rxrpc_tx_packet(chan->call_debug_id, &pkt.whdr, | |
143 | rxrpc_tx_point_call_final_resend); | |
6b47fe1d | 144 | |
18bfeba5 | 145 | _leave(""); |
18bfeba5 DH |
146 | } |
147 | ||
17926a79 DH |
148 | /* |
149 | * pass a connection-level abort onto all calls on that connection | |
150 | */ | |
f5c17aae | 151 | static void rxrpc_abort_calls(struct rxrpc_connection *conn, |
39ce6755 DH |
152 | enum rxrpc_call_completion compl, |
153 | rxrpc_serial_t serial) | |
17926a79 DH |
154 | { |
155 | struct rxrpc_call *call; | |
248f219c | 156 | int i; |
17926a79 | 157 | |
64753092 | 158 | _enter("{%d},%x", conn->debug_id, conn->abort_code); |
17926a79 | 159 | |
a1399f8b | 160 | spin_lock(&conn->channel_lock); |
17926a79 | 161 | |
a1399f8b DH |
162 | for (i = 0; i < RXRPC_MAXCALLS; i++) { |
163 | call = rcu_dereference_protected( | |
164 | conn->channels[i].call, | |
165 | lockdep_is_held(&conn->channel_lock)); | |
ccbd3dbe | 166 | if (call) { |
5a42976d | 167 | if (compl == RXRPC_CALL_LOCALLY_ABORTED) |
a25e21f0 DH |
168 | trace_rxrpc_abort(call->debug_id, |
169 | "CON", call->cid, | |
5a42976d | 170 | call->call_id, 0, |
64753092 DH |
171 | conn->abort_code, |
172 | conn->error); | |
39ce6755 DH |
173 | else |
174 | trace_rxrpc_rx_abort(call, serial, | |
175 | conn->abort_code); | |
248f219c | 176 | if (rxrpc_set_call_completion(call, compl, |
64753092 DH |
177 | conn->abort_code, |
178 | conn->error)) | |
248f219c | 179 | rxrpc_notify_socket(call); |
17926a79 | 180 | } |
17926a79 DH |
181 | } |
182 | ||
a1399f8b | 183 | spin_unlock(&conn->channel_lock); |
17926a79 DH |
184 | _leave(""); |
185 | } | |
186 | ||
187 | /* | |
188 | * generate a connection-level abort | |
189 | */ | |
190 | static int rxrpc_abort_connection(struct rxrpc_connection *conn, | |
3a92789a | 191 | int error, u32 abort_code) |
17926a79 | 192 | { |
0d12f8a4 | 193 | struct rxrpc_wire_header whdr; |
17926a79 DH |
194 | struct msghdr msg; |
195 | struct kvec iov[2]; | |
196 | __be32 word; | |
197 | size_t len; | |
0d12f8a4 | 198 | u32 serial; |
17926a79 DH |
199 | int ret; |
200 | ||
201 | _enter("%d,,%u,%u", conn->debug_id, error, abort_code); | |
202 | ||
203 | /* generate a connection-level abort */ | |
204 | spin_lock_bh(&conn->state_lock); | |
f5c17aae | 205 | if (conn->state >= RXRPC_CONN_REMOTELY_ABORTED) { |
17926a79 DH |
206 | spin_unlock_bh(&conn->state_lock); |
207 | _leave(" = 0 [already dead]"); | |
208 | return 0; | |
209 | } | |
210 | ||
64753092 DH |
211 | conn->error = error; |
212 | conn->abort_code = abort_code; | |
f5c17aae DH |
213 | conn->state = RXRPC_CONN_LOCALLY_ABORTED; |
214 | spin_unlock_bh(&conn->state_lock); | |
215 | ||
85f32278 DH |
216 | msg.msg_name = &conn->params.peer->srx.transport; |
217 | msg.msg_namelen = conn->params.peer->srx.transport_len; | |
17926a79 DH |
218 | msg.msg_control = NULL; |
219 | msg.msg_controllen = 0; | |
220 | msg.msg_flags = 0; | |
221 | ||
19ffa01c DH |
222 | whdr.epoch = htonl(conn->proto.epoch); |
223 | whdr.cid = htonl(conn->proto.cid); | |
0d12f8a4 DH |
224 | whdr.callNumber = 0; |
225 | whdr.seq = 0; | |
226 | whdr.type = RXRPC_PACKET_TYPE_ABORT; | |
227 | whdr.flags = conn->out_clientflag; | |
228 | whdr.userStatus = 0; | |
229 | whdr.securityIndex = conn->security_ix; | |
230 | whdr._rsvd = 0; | |
68d6d1ae | 231 | whdr.serviceId = htons(conn->service_id); |
17926a79 | 232 | |
64753092 | 233 | word = htonl(conn->abort_code); |
17926a79 | 234 | |
0d12f8a4 DH |
235 | iov[0].iov_base = &whdr; |
236 | iov[0].iov_len = sizeof(whdr); | |
17926a79 DH |
237 | iov[1].iov_base = &word; |
238 | iov[1].iov_len = sizeof(word); | |
239 | ||
240 | len = iov[0].iov_len + iov[1].iov_len; | |
241 | ||
0d12f8a4 | 242 | serial = atomic_inc_return(&conn->serial); |
39ce6755 | 243 | rxrpc_abort_calls(conn, RXRPC_CALL_LOCALLY_ABORTED, serial); |
0d12f8a4 | 244 | whdr.serial = htonl(serial); |
64753092 | 245 | _proto("Tx CONN ABORT %%%u { %d }", serial, conn->abort_code); |
17926a79 | 246 | |
85f32278 | 247 | ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 2, len); |
17926a79 | 248 | if (ret < 0) { |
6b47fe1d | 249 | trace_rxrpc_tx_fail(conn->debug_id, serial, ret, |
4764c0da | 250 | rxrpc_tx_point_conn_abort); |
17926a79 DH |
251 | _debug("sendmsg failed: %d", ret); |
252 | return -EAGAIN; | |
253 | } | |
254 | ||
4764c0da DH |
255 | trace_rxrpc_tx_packet(conn->debug_id, &whdr, rxrpc_tx_point_conn_abort); |
256 | ||
330bdcfa | 257 | conn->params.peer->last_tx_at = ktime_get_seconds(); |
ace45bec | 258 | |
17926a79 DH |
259 | _leave(" = 0"); |
260 | return 0; | |
261 | } | |
262 | ||
263 | /* | |
264 | * mark a call as being on a now-secured channel | |
248f219c | 265 | * - must be called with BH's disabled. |
17926a79 | 266 | */ |
5eaa65b2 | 267 | static void rxrpc_call_is_secure(struct rxrpc_call *call) |
17926a79 DH |
268 | { |
269 | _enter("%p", call); | |
270 | if (call) { | |
248f219c DH |
271 | write_lock_bh(&call->state_lock); |
272 | if (call->state == RXRPC_CALL_SERVER_SECURING) { | |
273 | call->state = RXRPC_CALL_SERVER_ACCEPTING; | |
274 | rxrpc_notify_socket(call); | |
275 | } | |
276 | write_unlock_bh(&call->state_lock); | |
17926a79 DH |
277 | } |
278 | } | |
279 | ||
280 | /* | |
281 | * connection-level Rx packet processor | |
282 | */ | |
283 | static int rxrpc_process_event(struct rxrpc_connection *conn, | |
284 | struct sk_buff *skb, | |
285 | u32 *_abort_code) | |
286 | { | |
287 | struct rxrpc_skb_priv *sp = rxrpc_skb(skb); | |
0d12f8a4 DH |
288 | __be32 wtmp; |
289 | u32 abort_code; | |
17926a79 DH |
290 | int loop, ret; |
291 | ||
519d2567 | 292 | if (conn->state >= RXRPC_CONN_REMOTELY_ABORTED) { |
248f219c | 293 | _leave(" = -ECONNABORTED [%u]", conn->state); |
17926a79 | 294 | return -ECONNABORTED; |
519d2567 | 295 | } |
17926a79 | 296 | |
0d12f8a4 | 297 | _enter("{%d},{%u,%%%u},", conn->debug_id, sp->hdr.type, sp->hdr.serial); |
519d2567 | 298 | |
17926a79 | 299 | switch (sp->hdr.type) { |
18bfeba5 DH |
300 | case RXRPC_PACKET_TYPE_DATA: |
301 | case RXRPC_PACKET_TYPE_ACK: | |
3136ef49 DH |
302 | rxrpc_conn_retransmit_call(conn, skb, |
303 | sp->hdr.cid & RXRPC_CHANNELMASK); | |
18bfeba5 DH |
304 | return 0; |
305 | ||
4d4a6ac7 DH |
306 | case RXRPC_PACKET_TYPE_BUSY: |
307 | /* Just ignore BUSY packets for now. */ | |
308 | return 0; | |
309 | ||
17926a79 | 310 | case RXRPC_PACKET_TYPE_ABORT: |
775e5b71 | 311 | if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), |
fb46f6ee DH |
312 | &wtmp, sizeof(wtmp)) < 0) { |
313 | trace_rxrpc_rx_eproto(NULL, sp->hdr.serial, | |
314 | tracepoint_string("bad_abort")); | |
17926a79 | 315 | return -EPROTO; |
fb46f6ee | 316 | } |
0d12f8a4 DH |
317 | abort_code = ntohl(wtmp); |
318 | _proto("Rx ABORT %%%u { ac=%d }", sp->hdr.serial, abort_code); | |
17926a79 | 319 | |
64753092 DH |
320 | conn->error = -ECONNABORTED; |
321 | conn->abort_code = abort_code; | |
17926a79 | 322 | conn->state = RXRPC_CONN_REMOTELY_ABORTED; |
39ce6755 | 323 | rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED, sp->hdr.serial); |
17926a79 DH |
324 | return -ECONNABORTED; |
325 | ||
326 | case RXRPC_PACKET_TYPE_CHALLENGE: | |
e0e4d82f DH |
327 | return conn->security->respond_to_challenge(conn, skb, |
328 | _abort_code); | |
17926a79 DH |
329 | |
330 | case RXRPC_PACKET_TYPE_RESPONSE: | |
17926a79 DH |
331 | ret = conn->security->verify_response(conn, skb, _abort_code); |
332 | if (ret < 0) | |
333 | return ret; | |
334 | ||
335 | ret = conn->security->init_connection_security(conn); | |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
a263629d HX |
339 | ret = conn->security->prime_packet_security(conn); |
340 | if (ret < 0) | |
341 | return ret; | |
342 | ||
a1399f8b | 343 | spin_lock(&conn->channel_lock); |
17926a79 DH |
344 | spin_lock(&conn->state_lock); |
345 | ||
bba304db DH |
346 | if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) { |
347 | conn->state = RXRPC_CONN_SERVICE; | |
248f219c | 348 | spin_unlock(&conn->state_lock); |
17926a79 | 349 | for (loop = 0; loop < RXRPC_MAXCALLS; loop++) |
dee46364 DH |
350 | rxrpc_call_is_secure( |
351 | rcu_dereference_protected( | |
a1399f8b DH |
352 | conn->channels[loop].call, |
353 | lockdep_is_held(&conn->channel_lock))); | |
248f219c DH |
354 | } else { |
355 | spin_unlock(&conn->state_lock); | |
17926a79 DH |
356 | } |
357 | ||
a1399f8b | 358 | spin_unlock(&conn->channel_lock); |
17926a79 DH |
359 | return 0; |
360 | ||
361 | default: | |
fb46f6ee DH |
362 | trace_rxrpc_rx_eproto(NULL, sp->hdr.serial, |
363 | tracepoint_string("bad_conn_pkt")); | |
17926a79 DH |
364 | return -EPROTO; |
365 | } | |
366 | } | |
367 | ||
368 | /* | |
369 | * set up security and issue a challenge | |
370 | */ | |
371 | static void rxrpc_secure_connection(struct rxrpc_connection *conn) | |
372 | { | |
373 | u32 abort_code; | |
374 | int ret; | |
375 | ||
376 | _enter("{%d}", conn->debug_id); | |
377 | ||
378 | ASSERT(conn->security_ix != 0); | |
379 | ||
19ffa01c | 380 | if (!conn->params.key) { |
17926a79 DH |
381 | _debug("set up security"); |
382 | ret = rxrpc_init_server_conn_security(conn); | |
383 | switch (ret) { | |
384 | case 0: | |
385 | break; | |
386 | case -ENOENT: | |
387 | abort_code = RX_CALL_DEAD; | |
388 | goto abort; | |
389 | default: | |
390 | abort_code = RXKADNOAUTH; | |
391 | goto abort; | |
392 | } | |
393 | } | |
394 | ||
17926a79 DH |
395 | if (conn->security->issue_challenge(conn) < 0) { |
396 | abort_code = RX_CALL_DEAD; | |
397 | ret = -ENOMEM; | |
398 | goto abort; | |
399 | } | |
400 | ||
401 | _leave(""); | |
402 | return; | |
403 | ||
404 | abort: | |
405 | _debug("abort %d, %d", ret, abort_code); | |
3a92789a | 406 | rxrpc_abort_connection(conn, ret, abort_code); |
17926a79 DH |
407 | _leave(" [aborted]"); |
408 | } | |
409 | ||
3136ef49 DH |
410 | /* |
411 | * Process delayed final ACKs that we haven't subsumed into a subsequent call. | |
412 | */ | |
413 | static void rxrpc_process_delayed_final_acks(struct rxrpc_connection *conn) | |
414 | { | |
415 | unsigned long j = jiffies, next_j; | |
416 | unsigned int channel; | |
417 | bool set; | |
418 | ||
419 | again: | |
420 | next_j = j + LONG_MAX; | |
421 | set = false; | |
422 | for (channel = 0; channel < RXRPC_MAXCALLS; channel++) { | |
423 | struct rxrpc_channel *chan = &conn->channels[channel]; | |
424 | unsigned long ack_at; | |
425 | ||
426 | if (!test_bit(RXRPC_CONN_FINAL_ACK_0 + channel, &conn->flags)) | |
427 | continue; | |
428 | ||
429 | smp_rmb(); /* vs rxrpc_disconnect_client_call */ | |
430 | ack_at = READ_ONCE(chan->final_ack_at); | |
431 | ||
432 | if (time_before(j, ack_at)) { | |
433 | if (time_before(ack_at, next_j)) { | |
434 | next_j = ack_at; | |
435 | set = true; | |
436 | } | |
437 | continue; | |
438 | } | |
439 | ||
440 | if (test_and_clear_bit(RXRPC_CONN_FINAL_ACK_0 + channel, | |
441 | &conn->flags)) | |
442 | rxrpc_conn_retransmit_call(conn, NULL, channel); | |
443 | } | |
444 | ||
445 | j = jiffies; | |
446 | if (time_before_eq(next_j, j)) | |
447 | goto again; | |
448 | if (set) | |
449 | rxrpc_reduce_conn_timer(conn, next_j); | |
450 | } | |
451 | ||
17926a79 DH |
452 | /* |
453 | * connection-level event processor | |
454 | */ | |
455 | void rxrpc_process_connection(struct work_struct *work) | |
456 | { | |
457 | struct rxrpc_connection *conn = | |
458 | container_of(work, struct rxrpc_connection, processor); | |
17926a79 DH |
459 | struct sk_buff *skb; |
460 | u32 abort_code = RX_PROTOCOL_ERROR; | |
461 | int ret; | |
462 | ||
363deeab | 463 | rxrpc_see_connection(conn); |
17926a79 | 464 | |
2c4579e4 | 465 | if (test_and_clear_bit(RXRPC_CONN_EV_CHALLENGE, &conn->events)) |
17926a79 | 466 | rxrpc_secure_connection(conn); |
17926a79 | 467 | |
3136ef49 DH |
468 | /* Process delayed ACKs whose time has come. */ |
469 | if (conn->flags & RXRPC_CONN_FINAL_ACK_MASK) | |
470 | rxrpc_process_delayed_final_acks(conn); | |
471 | ||
17926a79 DH |
472 | /* go through the conn-level event packets, releasing the ref on this |
473 | * connection that each one has when we've finished with it */ | |
474 | while ((skb = skb_dequeue(&conn->rx_queue))) { | |
987db9f7 | 475 | rxrpc_see_skb(skb, rxrpc_skb_seen); |
17926a79 DH |
476 | ret = rxrpc_process_event(conn, skb, &abort_code); |
477 | switch (ret) { | |
478 | case -EPROTO: | |
479 | case -EKEYEXPIRED: | |
480 | case -EKEYREJECTED: | |
481 | goto protocol_error; | |
8c2f826d | 482 | case -ENOMEM: |
17926a79 DH |
483 | case -EAGAIN: |
484 | goto requeue_and_leave; | |
485 | case -ECONNABORTED: | |
486 | default: | |
987db9f7 | 487 | rxrpc_free_skb(skb, rxrpc_skb_freed); |
17926a79 DH |
488 | break; |
489 | } | |
490 | } | |
491 | ||
492 | out: | |
493 | rxrpc_put_connection(conn); | |
494 | _leave(""); | |
495 | return; | |
496 | ||
497 | requeue_and_leave: | |
498 | skb_queue_head(&conn->rx_queue, skb); | |
499 | goto out; | |
500 | ||
501 | protocol_error: | |
3a92789a | 502 | if (rxrpc_abort_connection(conn, ret, abort_code) < 0) |
17926a79 | 503 | goto requeue_and_leave; |
987db9f7 | 504 | rxrpc_free_skb(skb, rxrpc_skb_freed); |
17926a79 DH |
505 | goto out; |
506 | } |