Lines Matching refs:call
23 void rxrpc_propose_ping(struct rxrpc_call *call, u32 serial,
29 if (time_before(ping_at, call->ping_at)) {
30 WRITE_ONCE(call->ping_at, ping_at);
31 rxrpc_reduce_call_timer(call, ping_at, now,
33 trace_rxrpc_propose_ack(call, why, RXRPC_ACK_PING, serial);
40 void rxrpc_propose_delay_ACK(struct rxrpc_call *call, rxrpc_serial_t serial,
48 if (call->peer->srtt_us != 0)
49 ack_at = usecs_to_jiffies(call->peer->srtt_us >> 3);
53 ack_at += READ_ONCE(call->tx_backoff);
55 if (time_before(ack_at, call->delay_ack_at)) {
56 WRITE_ONCE(call->delay_ack_at, ack_at);
57 rxrpc_reduce_call_timer(call, ack_at, now,
61 trace_rxrpc_propose_ack(call, why, RXRPC_ACK_DELAY, serial);
67 void rxrpc_send_ACK(struct rxrpc_call *call, u8 ack_reason,
72 if (test_bit(RXRPC_CALL_DISCONNECTED, &call->flags))
75 rxrpc_inc_stat(call->rxnet, stat_tx_acks[ack_reason]);
77 txb = rxrpc_alloc_txbuf(call, RXRPC_PACKET_TYPE_ACK,
96 trace_rxrpc_send_ack(call, why, ack_reason, serial);
97 rxrpc_send_ack_packet(call, txb);
104 static void rxrpc_congestion_timeout(struct rxrpc_call *call)
106 set_bit(RXRPC_CALL_RETRANS_TIMEOUT, &call->flags);
112 void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb)
118 rxrpc_seq_t transmitted = READ_ONCE(call->tx_transmitted);
124 _enter("{%d,%d}", call->acks_hard_ack, call->tx_top);
127 max_age = ktime_sub_us(now, jiffies_to_usecs(call->peer->rto_j));
130 if (list_empty(&call->tx_buffer))
133 if (list_empty(&call->tx_buffer))
136 trace_rxrpc_resend(call, ack_skb);
137 txb = list_first_entry(&call->tx_buffer, struct rxrpc_txbuf, call_link);
156 list_for_each_entry_from(txb, &call->tx_buffer, call_link) {
163 if (after(ntohl(txb->wire.serial), call->acks_highest_serial))
173 trace_rxrpc_retransmit(call, txb->seq,
177 if (list_is_last(&txb->call_link, &call->tx_buffer))
190 if (after_eq(READ_ONCE(call->acks_prev_seq), READ_ONCE(call->tx_transmitted)))
193 list_for_each_entry_from(txb, &call->tx_buffer, call_link) {
194 if (before_eq(txb->seq, READ_ONCE(call->acks_prev_seq)))
196 if (after(txb->seq, READ_ONCE(call->tx_transmitted)))
214 rxrpc_inc_stat(call->rxnet, stat_tx_data_retrans);
221 resend_at += jiffies + rxrpc_get_rto_backoff(call->peer,
223 WRITE_ONCE(call->resend_at, resend_at);
226 rxrpc_congestion_timeout(call);
233 rxrpc_reduce_call_timer(call, resend_at, jiffies,
235 ack_ts = ktime_sub(now, call->acks_latest_ts);
236 if (ktime_to_us(ack_ts) < (call->peer->srtt_us >> 3))
238 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
247 rxrpc_transmit_one(call, txb);
258 static void rxrpc_begin_service_reply(struct rxrpc_call *call)
262 rxrpc_set_call_state(call, RXRPC_CALL_SERVER_SEND_REPLY);
263 WRITE_ONCE(call->delay_ack_at, now + MAX_JIFFY_OFFSET);
264 if (call->ackr_reason == RXRPC_ACK_DELAY)
265 call->ackr_reason = 0;
266 trace_rxrpc_timer(call, rxrpc_timer_init_for_send_reply, now);
271 * transmitted in the call.
273 static void rxrpc_close_tx_phase(struct rxrpc_call *call)
277 switch (__rxrpc_call_state(call)) {
279 rxrpc_set_call_state(call, RXRPC_CALL_CLIENT_AWAIT_REPLY);
282 rxrpc_set_call_state(call, RXRPC_CALL_SERVER_AWAIT_ACK);
289 static bool rxrpc_tx_window_has_space(struct rxrpc_call *call)
291 unsigned int winsize = min_t(unsigned int, call->tx_winsize,
292 call->cong_cwnd + call->cong_extra);
293 rxrpc_seq_t window = call->acks_hard_ack, wtop = window + winsize;
294 rxrpc_seq_t tx_top = call->tx_top;
304 static void rxrpc_decant_prepared_tx(struct rxrpc_call *call)
308 if (!test_bit(RXRPC_CALL_EXPOSED, &call->flags)) {
309 if (list_empty(&call->tx_sendmsg))
311 rxrpc_expose_client_call(call);
314 while ((txb = list_first_entry_or_null(&call->tx_sendmsg,
316 spin_lock(&call->tx_lock);
318 spin_unlock(&call->tx_lock);
320 call->tx_top = txb->seq;
321 list_add_tail(&txb->call_link, &call->tx_buffer);
324 rxrpc_close_tx_phase(call);
326 rxrpc_transmit_one(call, txb);
328 if (!rxrpc_tx_window_has_space(call))
333 static void rxrpc_transmit_some_data(struct rxrpc_call *call)
335 switch (__rxrpc_call_state(call)) {
337 if (list_empty(&call->tx_sendmsg))
339 rxrpc_begin_service_reply(call);
344 if (!rxrpc_tx_window_has_space(call))
346 if (list_empty(&call->tx_sendmsg)) {
347 rxrpc_inc_stat(call->rxnet, stat_tx_data_underflow);
350 rxrpc_decant_prepared_tx(call);
361 static void rxrpc_send_initial_ping(struct rxrpc_call *call)
363 if (call->peer->rtt_count < 3 ||
364 ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
366 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
373 bool rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb)
379 rxrpc_see_call(call, rxrpc_call_see_input);
383 call->debug_id, rxrpc_call_states[__rxrpc_call_state(call)],
384 call->events);
386 if (__rxrpc_call_is_complete(call))
390 abort_code = smp_load_acquire(&call->send_abort);
392 rxrpc_abort_call(call, 0, call->send_abort, call->send_abort_err,
393 call->send_abort_why);
402 t = READ_ONCE(call->expect_rx_by);
404 trace_rxrpc_timer(call, rxrpc_timer_exp_normal, now);
408 t = READ_ONCE(call->expect_req_by);
409 if (__rxrpc_call_state(call) == RXRPC_CALL_SERVER_RECV_REQUEST &&
411 trace_rxrpc_timer(call, rxrpc_timer_exp_idle, now);
415 t = READ_ONCE(call->expect_term_by);
417 trace_rxrpc_timer(call, rxrpc_timer_exp_hard, now);
421 t = READ_ONCE(call->delay_ack_at);
423 trace_rxrpc_timer(call, rxrpc_timer_exp_ack, now);
424 cmpxchg(&call->delay_ack_at, t, now + MAX_JIFFY_OFFSET);
425 rxrpc_send_ACK(call, RXRPC_ACK_DELAY, 0,
429 t = READ_ONCE(call->ack_lost_at);
431 trace_rxrpc_timer(call, rxrpc_timer_exp_lost_ack, now);
432 cmpxchg(&call->ack_lost_at, t, now + MAX_JIFFY_OFFSET);
433 set_bit(RXRPC_CALL_EV_ACK_LOST, &call->events);
436 t = READ_ONCE(call->keepalive_at);
438 trace_rxrpc_timer(call, rxrpc_timer_exp_keepalive, now);
439 cmpxchg(&call->keepalive_at, t, now + MAX_JIFFY_OFFSET);
440 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
444 t = READ_ONCE(call->ping_at);
446 trace_rxrpc_timer(call, rxrpc_timer_exp_ping, now);
447 cmpxchg(&call->ping_at, t, now + MAX_JIFFY_OFFSET);
448 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
452 t = READ_ONCE(call->resend_at);
454 trace_rxrpc_timer(call, rxrpc_timer_exp_resend, now);
455 cmpxchg(&call->resend_at, t, now + MAX_JIFFY_OFFSET);
460 rxrpc_input_call_packet(call, skb);
462 rxrpc_transmit_some_data(call);
468 rxrpc_congestion_degrade(call);
471 if (test_and_clear_bit(RXRPC_CALL_EV_INITIAL_PING, &call->events))
472 rxrpc_send_initial_ping(call);
476 if (test_bit(RXRPC_CALL_RX_HEARD, &call->flags) &&
477 (int)call->conn->hi_serial - (int)call->rx_serial > 0) {
478 trace_rxrpc_call_reset(call);
479 rxrpc_abort_call(call, 0, RX_CALL_DEAD, -ECONNRESET,
482 rxrpc_abort_call(call, 0, RX_CALL_TIMEOUT, -ETIME,
488 if (test_and_clear_bit(RXRPC_CALL_EV_ACK_LOST, &call->events))
489 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
492 if (resend && __rxrpc_call_state(call) != RXRPC_CALL_CLIENT_RECV_REPLY)
493 rxrpc_resend(call, NULL);
495 if (test_and_clear_bit(RXRPC_CALL_RX_IS_IDLE, &call->flags))
496 rxrpc_send_ACK(call, RXRPC_ACK_IDLE, 0,
499 if (call->ackr_nr_unacked > 2) {
500 if (call->peer->rtt_count < 3)
501 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
503 else if (ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
505 rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
508 rxrpc_send_ACK(call, RXRPC_ACK_IDLE, 0,
513 if (!__rxrpc_call_is_complete(call)) {
514 next = call->expect_rx_by;
518 set(call->expect_req_by);
519 set(call->expect_term_by);
520 set(call->delay_ack_at);
521 set(call->ack_lost_at);
522 set(call->resend_at);
523 set(call->keepalive_at);
524 set(call->ping_at);
528 rxrpc_poke_call(call, rxrpc_call_poke_timer_now);
530 rxrpc_reduce_call_timer(call, next, now, rxrpc_timer_restart);
534 if (__rxrpc_call_is_complete(call)) {
535 del_timer_sync(&call->timer);
536 if (!test_bit(RXRPC_CALL_DISCONNECTED, &call->flags))
537 rxrpc_disconnect_call(call);
538 if (call->security)
539 call->security->free_call_crypto(call);
541 if (call->acks_hard_ack != call->tx_bottom)
542 rxrpc_shrink_call_tx_buffer(call);