Lines Matching full:call
23 static void rxrpc_proto_abort(struct rxrpc_call *call, rxrpc_seq_t seq, in rxrpc_proto_abort() argument
26 rxrpc_abort_call(call, seq, RX_PROTOCOL_ERROR, -EBADMSG, why); in rxrpc_proto_abort()
32 static void rxrpc_congestion_management(struct rxrpc_call *call, in rxrpc_congestion_management() argument
36 summary->in_flight = rxrpc_tx_in_flight(call); in rxrpc_congestion_management()
38 if (test_and_clear_bit(RXRPC_CALL_RETRANS_TIMEOUT, &call->flags)) { in rxrpc_congestion_management()
40 call->cong_ssthresh = umax(summary->in_flight / 2, 2); in rxrpc_congestion_management()
41 call->cong_cwnd = 1; in rxrpc_congestion_management()
42 if (call->cong_cwnd >= call->cong_ssthresh && in rxrpc_congestion_management()
43 call->cong_ca_state == RXRPC_CA_SLOW_START) { in rxrpc_congestion_management()
44 call->cong_ca_state = RXRPC_CA_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
45 call->cong_tstamp = call->acks_latest_ts; in rxrpc_congestion_management()
46 call->cong_cumul_acks = 0; in rxrpc_congestion_management()
50 call->cong_cumul_acks += summary->nr_new_sacks; in rxrpc_congestion_management()
51 call->cong_cumul_acks += summary->nr_new_hacks; in rxrpc_congestion_management()
52 if (call->cong_cumul_acks > 255) in rxrpc_congestion_management()
53 call->cong_cumul_acks = 255; in rxrpc_congestion_management()
55 switch (call->cong_ca_state) { in rxrpc_congestion_management()
57 if (call->acks_nr_snacks > 0) in rxrpc_congestion_management()
59 if (call->cong_cumul_acks > 0) in rxrpc_congestion_management()
60 call->cong_cwnd += 1; in rxrpc_congestion_management()
61 if (call->cong_cwnd >= call->cong_ssthresh) { in rxrpc_congestion_management()
62 call->cong_ca_state = RXRPC_CA_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
63 call->cong_tstamp = call->acks_latest_ts; in rxrpc_congestion_management()
68 if (call->acks_nr_snacks > 0) in rxrpc_congestion_management()
74 if (call->rtt_count == 0) in rxrpc_congestion_management()
76 if (ktime_before(call->acks_latest_ts, in rxrpc_congestion_management()
77 ktime_add_us(call->cong_tstamp, in rxrpc_congestion_management()
78 call->srtt_us >> 3))) in rxrpc_congestion_management()
81 call->cong_tstamp = call->acks_latest_ts; in rxrpc_congestion_management()
82 if (call->cong_cumul_acks >= call->cong_cwnd) in rxrpc_congestion_management()
83 call->cong_cwnd++; in rxrpc_congestion_management()
87 if (call->acks_nr_snacks == 0) in rxrpc_congestion_management()
92 call->cong_dup_acks = 1; in rxrpc_congestion_management()
93 if (call->cong_extra > 1) in rxrpc_congestion_management()
94 call->cong_extra = 1; in rxrpc_congestion_management()
98 call->cong_dup_acks++; in rxrpc_congestion_management()
99 if (call->cong_dup_acks < 3) in rxrpc_congestion_management()
103 call->cong_ca_state = RXRPC_CA_FAST_RETRANSMIT; in rxrpc_congestion_management()
104 call->cong_ssthresh = umax(summary->in_flight / 2, 2); in rxrpc_congestion_management()
105 call->cong_cwnd = call->cong_ssthresh + 3; in rxrpc_congestion_management()
106 call->cong_extra = 0; in rxrpc_congestion_management()
107 call->cong_dup_acks = 0; in rxrpc_congestion_management()
113 rxrpc_tlp_init(call); in rxrpc_congestion_management()
117 call->cong_cwnd += 1; in rxrpc_congestion_management()
118 call->cong_dup_acks++; in rxrpc_congestion_management()
119 if (call->cong_dup_acks == 2) { in rxrpc_congestion_management()
121 call->cong_dup_acks = 0; in rxrpc_congestion_management()
126 call->cong_cwnd = call->cong_ssthresh; in rxrpc_congestion_management()
127 if (call->acks_nr_snacks == 0) { in rxrpc_congestion_management()
141 call->cong_dup_acks = 0; in rxrpc_congestion_management()
142 call->cong_extra = 0; in rxrpc_congestion_management()
143 call->cong_tstamp = call->acks_latest_ts; in rxrpc_congestion_management()
144 if (call->cong_cwnd < call->cong_ssthresh) in rxrpc_congestion_management()
145 call->cong_ca_state = RXRPC_CA_SLOW_START; in rxrpc_congestion_management()
147 call->cong_ca_state = RXRPC_CA_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
149 call->cong_cumul_acks = 0; in rxrpc_congestion_management()
151 if (call->cong_cwnd >= RXRPC_TX_MAX_WINDOW) in rxrpc_congestion_management()
152 call->cong_cwnd = RXRPC_TX_MAX_WINDOW; in rxrpc_congestion_management()
153 trace_rxrpc_congest(call, summary); in rxrpc_congestion_management()
158 call->cong_ca_state = RXRPC_CA_PACKET_LOSS; in rxrpc_congestion_management()
159 call->cong_dup_acks = 0; in rxrpc_congestion_management()
166 if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) || in rxrpc_congestion_management()
167 call->acks_nr_sacks != call->tx_top - call->tx_bottom) { in rxrpc_congestion_management()
168 call->cong_extra++; in rxrpc_congestion_management()
169 wake_up(&call->waitq); in rxrpc_congestion_management()
177 void rxrpc_congestion_degrade(struct rxrpc_call *call) in rxrpc_congestion_degrade() argument
181 if (call->cong_ca_state != RXRPC_CA_SLOW_START && in rxrpc_congestion_degrade()
182 call->cong_ca_state != RXRPC_CA_CONGEST_AVOIDANCE) in rxrpc_congestion_degrade()
184 if (__rxrpc_call_state(call) == RXRPC_CALL_CLIENT_AWAIT_REPLY) in rxrpc_congestion_degrade()
187 rtt = ns_to_ktime(call->srtt_us * (NSEC_PER_USEC / 8)); in rxrpc_congestion_degrade()
189 time_since = ktime_sub(now, call->tx_last_sent); in rxrpc_congestion_degrade()
193 trace_rxrpc_reset_cwnd(call, time_since, rtt); in rxrpc_congestion_degrade()
194 rxrpc_inc_stat(call->rxnet, stat_tx_data_cwnd_reset); in rxrpc_congestion_degrade()
195 call->tx_last_sent = now; in rxrpc_congestion_degrade()
196 call->cong_ca_state = RXRPC_CA_SLOW_START; in rxrpc_congestion_degrade()
197 call->cong_ssthresh = umax(call->cong_ssthresh, call->cong_cwnd * 3 / 4); in rxrpc_congestion_degrade()
198 call->cong_cwnd = umax(call->cong_cwnd / 2, RXRPC_MIN_CWND); in rxrpc_congestion_degrade()
204 static void rxrpc_add_data_rtt_sample(struct rxrpc_call *call, in rxrpc_add_data_rtt_sample() argument
211 rxrpc_call_add_rtt(call, rxrpc_rtt_rx_data_ack, -1, in rxrpc_add_data_rtt_sample()
213 xmit_ts, call->acks_latest_ts); in rxrpc_add_data_rtt_sample()
220 static bool rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to, in rxrpc_rotate_tx_window() argument
223 struct rxrpc_txqueue *tq = call->tx_queue; in rxrpc_rotate_tx_window()
224 rxrpc_seq_t seq = call->tx_bottom + 1; in rxrpc_rotate_tx_window()
227 _enter("%x,%x", call->tx_bottom, to); in rxrpc_rotate_tx_window()
229 trace_rxrpc_tx_rotate(call, seq, to); in rxrpc_rotate_tx_window()
230 trace_rxrpc_tq(call, tq, seq, rxrpc_tq_rotate); in rxrpc_rotate_tx_window()
232 if (call->acks_lowest_nak == call->tx_bottom) { in rxrpc_rotate_tx_window()
233 call->acks_lowest_nak = to; in rxrpc_rotate_tx_window()
234 } else if (after(to, call->acks_lowest_nak)) { in rxrpc_rotate_tx_window()
236 call->acks_lowest_nak = to; in rxrpc_rotate_tx_window()
242 if (seq == call->tx_qbase + RXRPC_NR_TXQUEUE) { in rxrpc_rotate_tx_window()
243 call->tx_qbase += RXRPC_NR_TXQUEUE; in rxrpc_rotate_tx_window()
244 call->tx_queue = tq->next; in rxrpc_rotate_tx_window()
245 trace_rxrpc_tq(call, tq, seq, rxrpc_tq_rotate_and_free); in rxrpc_rotate_tx_window()
247 tq = call->tx_queue; in rxrpc_rotate_tx_window()
251 unsigned int ix = seq - call->tx_qbase; in rxrpc_rotate_tx_window()
255 set_bit(RXRPC_CALL_TX_LAST, &call->flags); in rxrpc_rotate_tx_window()
261 rxrpc_add_data_rtt_sample(call, summary, tq, ix); in rxrpc_rotate_tx_window()
266 rxrpc_input_rack_one(call, summary, tq, ix); in rxrpc_rotate_tx_window()
267 if (seq == call->tlp_seq) in rxrpc_rotate_tx_window()
271 trace_rxrpc_rotate(call, tq, summary, seq, rxrpc_rotate_trace_hack); in rxrpc_rotate_tx_window()
274 call->acks_nr_sacks--; in rxrpc_rotate_tx_window()
275 trace_rxrpc_rotate(call, tq, summary, seq, rxrpc_rotate_trace_sack); in rxrpc_rotate_tx_window()
278 call->acks_nr_snacks--; in rxrpc_rotate_tx_window()
279 rxrpc_input_rack_one(call, summary, tq, ix); in rxrpc_rotate_tx_window()
280 if (seq == call->tlp_seq) in rxrpc_rotate_tx_window()
284 trace_rxrpc_rotate(call, tq, summary, seq, rxrpc_rotate_trace_snak); in rxrpc_rotate_tx_window()
287 call->tx_nr_sent--; in rxrpc_rotate_tx_window()
289 call->tx_nr_lost--; in rxrpc_rotate_tx_window()
291 call->tx_nr_resent--; in rxrpc_rotate_tx_window()
297 WRITE_ONCE(call->tx_bottom, seq); in rxrpc_rotate_tx_window()
298 trace_rxrpc_txqueue(call, (rot_last ? in rxrpc_rotate_tx_window()
305 trace_rxrpc_rack_update(call, summary); in rxrpc_rotate_tx_window()
308 if (tq != call->tx_qtail) { in rxrpc_rotate_tx_window()
309 call->tx_qbase += RXRPC_NR_TXQUEUE; in rxrpc_rotate_tx_window()
310 call->tx_queue = tq->next; in rxrpc_rotate_tx_window()
311 trace_rxrpc_tq(call, tq, seq, rxrpc_tq_rotate_and_free); in rxrpc_rotate_tx_window()
313 tq = call->tx_queue; in rxrpc_rotate_tx_window()
315 trace_rxrpc_tq(call, tq, seq, rxrpc_tq_rotate_and_keep); in rxrpc_rotate_tx_window()
324 trace_rxrpc_rack_update(call, summary); in rxrpc_rotate_tx_window()
327 set_bit(RXRPC_CALL_TX_ALL_ACKED, &call->flags); in rxrpc_rotate_tx_window()
329 trace_rxrpc_tq(call, tq, seq, rxrpc_tq_rotate_and_free); in rxrpc_rotate_tx_window()
331 call->tx_queue = NULL; in rxrpc_rotate_tx_window()
335 _debug("%x,%x,%x,%d", to, call->tx_bottom, call->tx_top, rot_last); in rxrpc_rotate_tx_window()
337 wake_up(&call->waitq); in rxrpc_rotate_tx_window()
342 * End the transmission phase of a call.
347 static void rxrpc_end_tx_phase(struct rxrpc_call *call, bool reply_begun, in rxrpc_end_tx_phase() argument
350 ASSERT(test_bit(RXRPC_CALL_TX_LAST, &call->flags)); in rxrpc_end_tx_phase()
352 call->rack_timer_mode = RXRPC_CALL_RACKTIMER_OFF; in rxrpc_end_tx_phase()
353 call->rack_timo_at = KTIME_MAX; in rxrpc_end_tx_phase()
354 trace_rxrpc_rack_timer(call, 0, false); in rxrpc_end_tx_phase()
355 trace_rxrpc_timer_can(call, rxrpc_timer_trace_rack_off + call->rack_timer_mode); in rxrpc_end_tx_phase()
357 switch (__rxrpc_call_state(call)) { in rxrpc_end_tx_phase()
361 rxrpc_set_call_state(call, RXRPC_CALL_CLIENT_RECV_REPLY); in rxrpc_end_tx_phase()
362 trace_rxrpc_txqueue(call, rxrpc_txqueue_end); in rxrpc_end_tx_phase()
366 rxrpc_set_call_state(call, RXRPC_CALL_CLIENT_AWAIT_REPLY); in rxrpc_end_tx_phase()
367 trace_rxrpc_txqueue(call, rxrpc_txqueue_await_reply); in rxrpc_end_tx_phase()
371 rxrpc_call_completed(call); in rxrpc_end_tx_phase()
372 trace_rxrpc_txqueue(call, rxrpc_txqueue_end); in rxrpc_end_tx_phase()
376 kdebug("end_tx %s", rxrpc_call_states[__rxrpc_call_state(call)]); in rxrpc_end_tx_phase()
377 rxrpc_proto_abort(call, call->tx_top, abort_why); in rxrpc_end_tx_phase()
383 * Begin the reply reception phase of a call.
385 static bool rxrpc_receiving_reply(struct rxrpc_call *call) in rxrpc_receiving_reply() argument
388 rxrpc_seq_t top = READ_ONCE(call->tx_top); in rxrpc_receiving_reply()
390 if (call->ackr_reason) { in rxrpc_receiving_reply()
391 call->delay_ack_at = KTIME_MAX; in rxrpc_receiving_reply()
392 trace_rxrpc_timer_can(call, rxrpc_timer_trace_delayed_ack); in rxrpc_receiving_reply()
395 if (!test_bit(RXRPC_CALL_TX_LAST, &call->flags)) { in rxrpc_receiving_reply()
396 if (!rxrpc_rotate_tx_window(call, top, &summary)) { in rxrpc_receiving_reply()
397 rxrpc_proto_abort(call, top, rxrpc_eproto_early_reply); in rxrpc_receiving_reply()
402 rxrpc_end_tx_phase(call, true, rxrpc_eproto_unexpected_reply); in rxrpc_receiving_reply()
409 static void rxrpc_end_rx_phase(struct rxrpc_call *call, rxrpc_serial_t serial) in rxrpc_end_rx_phase() argument
411 rxrpc_seq_t whigh = READ_ONCE(call->rx_highest_seq); in rxrpc_end_rx_phase()
413 _enter("%d,%s", call->debug_id, rxrpc_call_states[__rxrpc_call_state(call)]); in rxrpc_end_rx_phase()
415 trace_rxrpc_receive(call, rxrpc_receive_end, 0, whigh); in rxrpc_end_rx_phase()
417 switch (__rxrpc_call_state(call)) { in rxrpc_end_rx_phase()
419 rxrpc_propose_delay_ACK(call, serial, rxrpc_propose_ack_terminal_ack); in rxrpc_end_rx_phase()
420 rxrpc_call_completed(call); in rxrpc_end_rx_phase()
424 rxrpc_set_call_state(call, RXRPC_CALL_SERVER_ACK_REQUEST); in rxrpc_end_rx_phase()
425 call->expect_req_by = KTIME_MAX; in rxrpc_end_rx_phase()
426 rxrpc_propose_delay_ACK(call, serial, rxrpc_propose_ack_processing_op); in rxrpc_end_rx_phase()
434 static void rxrpc_input_update_ack_window(struct rxrpc_call *call, in rxrpc_input_update_ack_window() argument
437 call->ackr_window = window; in rxrpc_input_update_ack_window()
438 call->ackr_wtop = wtop; in rxrpc_input_update_ack_window()
444 static void rxrpc_input_queue_data(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_queue_data() argument
451 spin_lock_irq(&call->recvmsg_queue.lock); in rxrpc_input_queue_data()
453 __skb_queue_tail(&call->recvmsg_queue, skb); in rxrpc_input_queue_data()
454 rxrpc_input_update_ack_window(call, window, wtop); in rxrpc_input_queue_data()
455 trace_rxrpc_receive(call, last ? why + 1 : why, sp->hdr.serial, sp->hdr.seq); in rxrpc_input_queue_data()
461 rxrpc_end_rx_phase(call, sp->hdr.serial); in rxrpc_input_queue_data()
463 spin_unlock_irq(&call->recvmsg_queue.lock); in rxrpc_input_queue_data()
469 static void rxrpc_input_data_one(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_data_one() argument
475 unsigned int sack = call->ackr_sack_base; in rxrpc_input_data_one()
476 rxrpc_seq_t window = call->ackr_window; in rxrpc_input_data_one()
477 rxrpc_seq_t wtop = call->ackr_wtop; in rxrpc_input_data_one()
478 rxrpc_seq_t wlimit = window + call->rx_winsize - 1; in rxrpc_input_data_one()
483 rxrpc_inc_stat(call->rxnet, stat_rx_data); in rxrpc_input_data_one()
485 rxrpc_inc_stat(call->rxnet, stat_rx_data_reqack); in rxrpc_input_data_one()
487 rxrpc_inc_stat(call->rxnet, stat_rx_data_jumbo); in rxrpc_input_data_one()
490 if (test_and_set_bit(RXRPC_CALL_RX_LAST, &call->flags) && in rxrpc_input_data_one()
492 return rxrpc_proto_abort(call, seq, rxrpc_eproto_different_last); in rxrpc_input_data_one()
494 if (test_bit(RXRPC_CALL_RX_LAST, &call->flags) && in rxrpc_input_data_one()
497 call->debug_id, seq, window, wtop, wlimit); in rxrpc_input_data_one()
498 return rxrpc_proto_abort(call, seq, rxrpc_eproto_data_after_last); in rxrpc_input_data_one()
502 if (after(seq, call->rx_highest_seq)) in rxrpc_input_data_one()
503 call->rx_highest_seq = seq; in rxrpc_input_data_one()
505 trace_rxrpc_rx_data(call->debug_id, seq, serial, sp->hdr.flags); in rxrpc_input_data_one()
521 else if (!skb_queue_empty(&call->rx_oos_queue)) in rxrpc_input_data_one()
526 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_none); in rxrpc_input_data_one()
529 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_advance); in rxrpc_input_data_one()
536 rxrpc_input_queue_data(call, skb, window, wtop, rxrpc_receive_queue); in rxrpc_input_data_one()
539 while ((oos = skb_peek(&call->rx_oos_queue))) { in rxrpc_input_data_one()
545 __skb_unlink(oos, &call->rx_oos_queue); in rxrpc_input_data_one()
548 call->ackr_sack_table[sack] = 0; in rxrpc_input_data_one()
549 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_fill); in rxrpc_input_data_one()
553 rxrpc_input_queue_data(call, oos, window, wtop, in rxrpc_input_data_one()
557 call->ackr_sack_base = sack; in rxrpc_input_data_one()
566 if (call->ackr_sack_table[sack % RXRPC_SACK_SIZE]) { in rxrpc_input_data_one()
571 call->ackr_sack_table[sack % RXRPC_SACK_SIZE] |= 1; in rxrpc_input_data_one()
572 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_oos); in rxrpc_input_data_one()
576 rxrpc_input_update_ack_window(call, window, wtop); in rxrpc_input_data_one()
579 skb_queue_walk(&call->rx_oos_queue, oos) { in rxrpc_input_data_one()
584 __skb_queue_before(&call->rx_oos_queue, oos, skb); in rxrpc_input_data_one()
590 __skb_queue_tail(&call->rx_oos_queue, skb); in rxrpc_input_data_one()
592 trace_rxrpc_receive(call, last ? rxrpc_receive_oos_last : rxrpc_receive_oos, in rxrpc_input_data_one()
612 static bool rxrpc_input_split_jumbo(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_split_jumbo() argument
641 rxrpc_input_data_one(call, jskb, ¬ify, &ack_serial, &ack_reason); in rxrpc_input_split_jumbo()
655 rxrpc_input_data_one(call, skb, ¬ify, &ack_serial, &ack_reason); in rxrpc_input_split_jumbo()
657 stat_ix = umin(count, ARRAY_SIZE(call->rxnet->stat_rx_jumbo)) - 1; in rxrpc_input_split_jumbo()
658 atomic_inc(&call->rxnet->stat_rx_jumbo[stat_ix]); in rxrpc_input_split_jumbo()
661 rxrpc_send_ACK(call, ack_reason, ack_serial, in rxrpc_input_split_jumbo()
664 call->ackr_nr_unacked++; in rxrpc_input_split_jumbo()
665 rxrpc_propose_delay_ACK(call, sp->hdr.serial, in rxrpc_input_split_jumbo()
668 if (notify && !test_bit(RXRPC_CALL_CONN_CHALLENGING, &call->flags)) { in rxrpc_input_split_jumbo()
669 trace_rxrpc_notify_socket(call->debug_id, sp->hdr.serial); in rxrpc_input_split_jumbo()
670 rxrpc_notify_socket(call); in rxrpc_input_split_jumbo()
682 static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_data() argument
689 call->ackr_window, call->ackr_wtop, call->rx_highest_seq, in rxrpc_input_data()
692 if (__rxrpc_call_is_complete(call)) in rxrpc_input_data()
695 switch (__rxrpc_call_state(call)) { in rxrpc_input_data()
701 if (!rxrpc_receiving_reply(call)) in rxrpc_input_data()
706 unsigned long timo = READ_ONCE(call->next_req_timo); in rxrpc_input_data()
711 call->expect_req_by = ktime_add(ktime_get_real(), delay); in rxrpc_input_data()
712 trace_rxrpc_timer_set(call, delay, rxrpc_timer_trace_idle); in rxrpc_input_data()
721 if (!rxrpc_input_split_jumbo(call, skb)) { in rxrpc_input_data()
722 rxrpc_proto_abort(call, sp->hdr.seq, rxrpc_badmsg_bad_jumbo); in rxrpc_input_data()
728 trace_rxrpc_notify_socket(call->debug_id, serial); in rxrpc_input_data()
729 rxrpc_notify_socket(call); in rxrpc_input_data()
736 static void rxrpc_complete_rtt_probe(struct rxrpc_call *call, in rxrpc_complete_rtt_probe() argument
748 avail = READ_ONCE(call->rtt_avail); in rxrpc_complete_rtt_probe()
751 for (i = 0; i < ARRAY_SIZE(call->rtt_serial); i++) { in rxrpc_complete_rtt_probe()
755 sent_at = call->rtt_sent_at[i]; in rxrpc_complete_rtt_probe()
756 orig_serial = call->rtt_serial[i]; in rxrpc_complete_rtt_probe()
759 clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail); in rxrpc_complete_rtt_probe()
761 set_bit(i, &call->rtt_avail); in rxrpc_complete_rtt_probe()
762 rxrpc_call_add_rtt(call, type, i, acked_serial, ack_serial, in rxrpc_complete_rtt_probe()
771 trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_obsolete, i, in rxrpc_complete_rtt_probe()
773 clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail); in rxrpc_complete_rtt_probe()
775 set_bit(i, &call->rtt_avail); in rxrpc_complete_rtt_probe()
780 trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_lost, 9, 0, acked_serial, 0, 0, 0); in rxrpc_complete_rtt_probe()
786 static void rxrpc_input_ack_trailer(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_ack_trailer() argument
790 struct rxrpc_peer *peer = call->peer; in rxrpc_input_ack_trailer()
800 if (call->tx_winsize != rwind) { in rxrpc_input_ack_trailer()
801 if (rwind > call->tx_winsize) in rxrpc_input_ack_trailer()
803 trace_rxrpc_rx_rwind_change(call, sp->hdr.serial, rwind, wake); in rxrpc_input_ack_trailer()
804 call->tx_winsize = rwind; in rxrpc_input_ack_trailer()
829 call->tx_jumbo_max = capacity; in rxrpc_input_ack_trailer()
832 wake_up(&call->waitq); in rxrpc_input_ack_trailer()
857 static void rxrpc_input_soft_rtt(struct rxrpc_call *call, in rxrpc_input_soft_rtt() argument
863 return rxrpc_add_data_rtt_sample(call, summary, tq, ix); in rxrpc_input_soft_rtt()
869 static void rxrpc_input_soft_ack_tq(struct rxrpc_call *call, in rxrpc_input_soft_ack_tq() argument
902 call->acks_nr_sacks += a - n; in rxrpc_input_soft_ack_tq()
903 call->acks_nr_snacks += n - a; in rxrpc_input_soft_ack_tq()
916 call->acks_nr_sacks += a; in rxrpc_input_soft_ack_tq()
917 call->acks_nr_snacks += n; in rxrpc_input_soft_ack_tq()
921 call->acks_nr_snacks += new; in rxrpc_input_soft_ack_tq()
928 trace_rxrpc_apply_acks(call, tq); in rxrpc_input_soft_ack_tq()
938 rxrpc_input_soft_rtt(call, summary, tq); in rxrpc_input_soft_ack_tq()
942 rxrpc_input_rack(call, summary, tq, new_acks); in rxrpc_input_soft_ack_tq()
944 if (call->tlp_serial && in rxrpc_input_soft_ack_tq()
945 rxrpc_seq_in_txq(tq, call->tlp_seq) && in rxrpc_input_soft_ack_tq()
946 test_bit(call->tlp_seq - tq->qbase, &new_acks)) in rxrpc_input_soft_ack_tq()
959 static void rxrpc_input_soft_acks(struct rxrpc_call *call, in rxrpc_input_soft_acks() argument
964 struct rxrpc_txqueue *tq = call->tx_queue; in rxrpc_input_soft_acks()
967 rxrpc_seq_t seq = call->acks_hard_ack + 1; in rxrpc_input_soft_acks()
990 rxrpc_input_soft_ack_tq(call, summary, tq, extracted, RXRPC_NR_TXQUEUE, in rxrpc_input_soft_acks()
1003 rxrpc_input_soft_ack_tq(call, summary, tq, extracted, nr_reported, in rxrpc_input_soft_acks()
1012 if (lowest_nak != call->acks_lowest_nak) { in rxrpc_input_soft_acks()
1013 call->acks_lowest_nak = lowest_nak; in rxrpc_input_soft_acks()
1018 call->acks_nr_sacks, summary->nr_new_sacks, in rxrpc_input_soft_acks()
1019 call->acks_nr_snacks, summary->nr_new_snacks); in rxrpc_input_soft_acks()
1026 static bool rxrpc_is_ack_valid(struct rxrpc_call *call, in rxrpc_is_ack_valid() argument
1029 rxrpc_seq_t base = READ_ONCE(call->acks_hard_ack); in rxrpc_is_ack_valid()
1037 if (after_eq(prev_pkt, call->acks_prev_seq)) in rxrpc_is_ack_valid()
1041 if (after(prev_pkt, base + call->tx_winsize)) in rxrpc_is_ack_valid()
1056 static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_ack() argument
1077 trace_rxrpc_rx_ack(call, sp); in rxrpc_input_ack()
1078 rxrpc_inc_stat(call->rxnet, stat_rx_acks[summary.ack_reason]); in rxrpc_input_ack()
1079 prefetch(call->tx_queue); in rxrpc_input_ack()
1083 * lost the call because it switched to a different peer. in rxrpc_input_ack()
1088 rxrpc_is_client_call(call)) { in rxrpc_input_ack()
1089 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_ack()
1095 * indicate a change of address. However, we can retransmit the call in rxrpc_input_ack()
1101 call->tx_bottom == 0 && in rxrpc_input_ack()
1102 rxrpc_is_client_call(call)) { in rxrpc_input_ack()
1103 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_ack()
1109 if (!rxrpc_is_ack_valid(call, hard_ack, prev_pkt)) { in rxrpc_input_ack()
1110 trace_rxrpc_rx_discard_ack(call, summary.ack_serial, hard_ack, prev_pkt); in rxrpc_input_ack()
1118 return rxrpc_proto_abort(call, 0, rxrpc_badmsg_short_ack_trailer); in rxrpc_input_ack()
1123 call->acks_latest_ts = ktime_get_real(); in rxrpc_input_ack()
1124 call->acks_hard_ack = hard_ack; in rxrpc_input_ack()
1125 call->acks_prev_seq = prev_pkt; in rxrpc_input_ack()
1130 rxrpc_complete_rtt_probe(call, call->acks_latest_ts, in rxrpc_input_ack()
1135 if (after(summary.acked_serial, call->acks_highest_serial)) in rxrpc_input_ack()
1136 call->acks_highest_serial = summary.acked_serial; in rxrpc_input_ack()
1144 rxrpc_input_ack_trailer(call, skb, &trailer); in rxrpc_input_ack()
1147 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_zero); in rxrpc_input_ack()
1150 switch (__rxrpc_call_state(call)) { in rxrpc_input_ack()
1160 if (before(hard_ack, call->tx_bottom) || in rxrpc_input_ack()
1161 after(hard_ack, call->tx_top)) in rxrpc_input_ack()
1162 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_outside_window); in rxrpc_input_ack()
1163 if (nr_acks > call->tx_top - hard_ack) in rxrpc_input_ack()
1164 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_sack_overflow); in rxrpc_input_ack()
1166 if (after(hard_ack, call->tx_bottom)) { in rxrpc_input_ack()
1167 if (rxrpc_rotate_tx_window(call, hard_ack, &summary)) { in rxrpc_input_ack()
1168 rxrpc_end_tx_phase(call, false, rxrpc_eproto_unexpected_ack); in rxrpc_input_ack()
1175 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_short_sack); in rxrpc_input_ack()
1176 rxrpc_input_soft_acks(call, &summary, skb); in rxrpc_input_ack()
1179 if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) && in rxrpc_input_ack()
1180 call->acks_nr_sacks == call->tx_top - hard_ack && in rxrpc_input_ack()
1181 rxrpc_is_client_call(call)) in rxrpc_input_ack()
1182 rxrpc_propose_ping(call, summary.ack_serial, in rxrpc_input_ack()
1188 rxrpc_congestion_management(call, &summary); in rxrpc_input_ack()
1189 rxrpc_rack_detect_loss_and_arm_timer(call, &summary); in rxrpc_input_ack()
1190 rxrpc_tlp_process_ack(call, &summary); in rxrpc_input_ack()
1191 if (call->tlp_serial && after_eq(summary.acked_serial, call->tlp_serial)) in rxrpc_input_ack()
1192 call->tlp_serial = 0; in rxrpc_input_ack()
1196 rxrpc_send_ACK(call, RXRPC_ACK_PING_RESPONSE, summary.ack_serial, in rxrpc_input_ack()
1199 rxrpc_send_ACK(call, RXRPC_ACK_REQUESTED, summary.ack_serial, in rxrpc_input_ack()
1206 static void rxrpc_input_ackall(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_ackall() argument
1210 if (rxrpc_rotate_tx_window(call, call->tx_top, &summary)) in rxrpc_input_ackall()
1211 rxrpc_end_tx_phase(call, false, rxrpc_eproto_unexpected_ackall); in rxrpc_input_ackall()
1215 * Process an ABORT packet directed at a call.
1217 static void rxrpc_input_abort(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_abort() argument
1221 trace_rxrpc_rx_abort(call, sp->hdr.serial, skb->priority); in rxrpc_input_abort()
1223 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_abort()
1228 * Process an incoming call packet.
1230 void rxrpc_input_call_packet(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_call_packet() argument
1235 _enter("%p,%p", call, skb); in rxrpc_input_call_packet()
1237 if (sp->hdr.serviceId != call->dest_srx.srx_service) in rxrpc_input_call_packet()
1238 call->dest_srx.srx_service = sp->hdr.serviceId; in rxrpc_input_call_packet()
1239 if ((int)sp->hdr.serial - (int)call->rx_serial > 0) in rxrpc_input_call_packet()
1240 call->rx_serial = sp->hdr.serial; in rxrpc_input_call_packet()
1241 if (!test_bit(RXRPC_CALL_RX_HEARD, &call->flags)) in rxrpc_input_call_packet()
1242 set_bit(RXRPC_CALL_RX_HEARD, &call->flags); in rxrpc_input_call_packet()
1244 timo = READ_ONCE(call->next_rx_timo); in rxrpc_input_call_packet()
1248 call->expect_rx_by = ktime_add(ktime_get_real(), delay); in rxrpc_input_call_packet()
1249 trace_rxrpc_timer_set(call, delay, rxrpc_timer_trace_expect_rx); in rxrpc_input_call_packet()
1254 return rxrpc_input_data(call, skb); in rxrpc_input_call_packet()
1257 return rxrpc_input_ack(call, skb); in rxrpc_input_call_packet()
1267 return rxrpc_input_abort(call, skb); in rxrpc_input_call_packet()
1270 return rxrpc_input_ackall(call, skb); in rxrpc_input_call_packet()
1278 * Handle a new service call on a channel implicitly completing the preceding
1279 * call on that channel. This does not apply to client conns.
1283 void rxrpc_implicit_end_call(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_implicit_end_call() argument
1285 switch (__rxrpc_call_state(call)) { in rxrpc_implicit_end_call()
1287 rxrpc_call_completed(call); in rxrpc_implicit_end_call()
1292 rxrpc_abort_call(call, 0, RX_CALL_DEAD, -ESHUTDOWN, in rxrpc_implicit_end_call()
1294 trace_rxrpc_improper_term(call); in rxrpc_implicit_end_call()
1298 rxrpc_input_call_event(call); in rxrpc_implicit_end_call()