Lines Matching full:call
12 static void rxrpc_proto_abort(struct rxrpc_call *call, rxrpc_seq_t seq, in rxrpc_proto_abort() argument
15 rxrpc_abort_call(call, seq, RX_PROTOCOL_ERROR, -EBADMSG, why); in rxrpc_proto_abort()
21 static void rxrpc_congestion_management(struct rxrpc_call *call, in rxrpc_congestion_management() argument
27 unsigned int cumulative_acks = call->cong_cumul_acks; in rxrpc_congestion_management()
28 unsigned int cwnd = call->cong_cwnd; in rxrpc_congestion_management()
32 (call->tx_top - call->acks_hard_ack) - summary->nr_acks; in rxrpc_congestion_management()
34 if (test_and_clear_bit(RXRPC_CALL_RETRANS_TIMEOUT, &call->flags)) { in rxrpc_congestion_management()
36 call->cong_ssthresh = max_t(unsigned int, in rxrpc_congestion_management()
39 if (cwnd >= call->cong_ssthresh && in rxrpc_congestion_management()
40 call->cong_mode == RXRPC_CALL_SLOW_START) { in rxrpc_congestion_management()
41 call->cong_mode = RXRPC_CALL_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
42 call->cong_tstamp = skb->tstamp; in rxrpc_congestion_management()
51 summary->cwnd = call->cong_cwnd; in rxrpc_congestion_management()
52 summary->ssthresh = call->cong_ssthresh; in rxrpc_congestion_management()
54 summary->dup_acks = call->cong_dup_acks; in rxrpc_congestion_management()
56 switch (call->cong_mode) { in rxrpc_congestion_management()
62 if (cwnd >= call->cong_ssthresh) { in rxrpc_congestion_management()
63 call->cong_mode = RXRPC_CALL_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
64 call->cong_tstamp = skb->tstamp; in rxrpc_congestion_management()
75 if (call->peer->rtt_count == 0) in rxrpc_congestion_management()
78 ktime_add_us(call->cong_tstamp, in rxrpc_congestion_management()
79 call->peer->srtt_us >> 3))) in rxrpc_congestion_management()
82 call->cong_tstamp = skb->tstamp; in rxrpc_congestion_management()
93 call->cong_dup_acks = 1; in rxrpc_congestion_management()
94 if (call->cong_extra > 1) in rxrpc_congestion_management()
95 call->cong_extra = 1; in rxrpc_congestion_management()
99 call->cong_dup_acks++; in rxrpc_congestion_management()
100 if (call->cong_dup_acks < 3) in rxrpc_congestion_management()
104 call->cong_mode = RXRPC_CALL_FAST_RETRANSMIT; in rxrpc_congestion_management()
105 call->cong_ssthresh = max_t(unsigned int, in rxrpc_congestion_management()
107 cwnd = call->cong_ssthresh + 3; in rxrpc_congestion_management()
108 call->cong_extra = 0; in rxrpc_congestion_management()
109 call->cong_dup_acks = 0; in rxrpc_congestion_management()
117 call->cong_dup_acks++; in rxrpc_congestion_management()
118 if (call->cong_dup_acks == 2) { in rxrpc_congestion_management()
120 call->cong_dup_acks = 0; in rxrpc_congestion_management()
125 cwnd = call->cong_ssthresh; in rxrpc_congestion_management()
138 call->cong_dup_acks = 0; in rxrpc_congestion_management()
139 call->cong_extra = 0; in rxrpc_congestion_management()
140 call->cong_tstamp = skb->tstamp; in rxrpc_congestion_management()
141 if (cwnd < call->cong_ssthresh) in rxrpc_congestion_management()
142 call->cong_mode = RXRPC_CALL_SLOW_START; in rxrpc_congestion_management()
144 call->cong_mode = RXRPC_CALL_CONGEST_AVOIDANCE; in rxrpc_congestion_management()
150 call->cong_cwnd = cwnd; in rxrpc_congestion_management()
151 call->cong_cumul_acks = cumulative_acks; in rxrpc_congestion_management()
152 summary->mode = call->cong_mode; in rxrpc_congestion_management()
153 trace_rxrpc_congest(call, summary, acked_serial, change); in rxrpc_congestion_management()
155 rxrpc_resend(call, skb); in rxrpc_congestion_management()
160 call->cong_mode = RXRPC_CALL_PACKET_LOSS; in rxrpc_congestion_management()
161 call->cong_dup_acks = 0; in rxrpc_congestion_management()
168 if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) || in rxrpc_congestion_management()
169 summary->nr_acks != call->tx_top - call->acks_hard_ack) { in rxrpc_congestion_management()
170 call->cong_extra++; in rxrpc_congestion_management()
171 wake_up(&call->waitq); in rxrpc_congestion_management()
179 void rxrpc_congestion_degrade(struct rxrpc_call *call) in rxrpc_congestion_degrade() argument
183 if (call->cong_mode != RXRPC_CALL_SLOW_START && in rxrpc_congestion_degrade()
184 call->cong_mode != RXRPC_CALL_CONGEST_AVOIDANCE) in rxrpc_congestion_degrade()
186 if (__rxrpc_call_state(call) == RXRPC_CALL_CLIENT_AWAIT_REPLY) in rxrpc_congestion_degrade()
189 rtt = ns_to_ktime(call->peer->srtt_us * (1000 / 8)); in rxrpc_congestion_degrade()
191 if (!ktime_before(ktime_add(call->tx_last_sent, rtt), now)) in rxrpc_congestion_degrade()
194 trace_rxrpc_reset_cwnd(call, now); in rxrpc_congestion_degrade()
195 rxrpc_inc_stat(call->rxnet, stat_tx_data_cwnd_reset); in rxrpc_congestion_degrade()
196 call->tx_last_sent = now; in rxrpc_congestion_degrade()
197 call->cong_mode = RXRPC_CALL_SLOW_START; in rxrpc_congestion_degrade()
198 call->cong_ssthresh = max_t(unsigned int, call->cong_ssthresh, in rxrpc_congestion_degrade()
199 call->cong_cwnd * 3 / 4); in rxrpc_congestion_degrade()
200 call->cong_cwnd = max_t(unsigned int, call->cong_cwnd / 2, RXRPC_MIN_CWND); in rxrpc_congestion_degrade()
206 static bool rxrpc_rotate_tx_window(struct rxrpc_call *call, rxrpc_seq_t to, in rxrpc_rotate_tx_window() argument
212 list_for_each_entry_rcu(txb, &call->tx_buffer, call_link, false) { in rxrpc_rotate_tx_window()
213 if (before_eq(txb->seq, call->acks_hard_ack)) in rxrpc_rotate_tx_window()
216 set_bit(RXRPC_CALL_TX_LAST, &call->flags); in rxrpc_rotate_tx_window()
224 set_bit(RXRPC_CALL_TX_ALL_ACKED, &call->flags); in rxrpc_rotate_tx_window()
226 _enter("%x,%x,%x,%d", to, call->acks_hard_ack, call->tx_top, rot_last); in rxrpc_rotate_tx_window()
228 if (call->acks_lowest_nak == call->acks_hard_ack) { in rxrpc_rotate_tx_window()
229 call->acks_lowest_nak = to; in rxrpc_rotate_tx_window()
230 } else if (after(to, call->acks_lowest_nak)) { in rxrpc_rotate_tx_window()
232 call->acks_lowest_nak = to; in rxrpc_rotate_tx_window()
235 smp_store_release(&call->acks_hard_ack, to); in rxrpc_rotate_tx_window()
237 trace_rxrpc_txqueue(call, (rot_last ? in rxrpc_rotate_tx_window()
240 wake_up(&call->waitq); in rxrpc_rotate_tx_window()
245 * End the transmission phase of a call.
250 static void rxrpc_end_tx_phase(struct rxrpc_call *call, bool reply_begun, in rxrpc_end_tx_phase() argument
253 ASSERT(test_bit(RXRPC_CALL_TX_LAST, &call->flags)); in rxrpc_end_tx_phase()
255 if (unlikely(call->cong_last_nack)) { in rxrpc_end_tx_phase()
256 rxrpc_free_skb(call->cong_last_nack, rxrpc_skb_put_last_nack); in rxrpc_end_tx_phase()
257 call->cong_last_nack = NULL; in rxrpc_end_tx_phase()
260 switch (__rxrpc_call_state(call)) { in rxrpc_end_tx_phase()
264 rxrpc_set_call_state(call, RXRPC_CALL_CLIENT_RECV_REPLY); in rxrpc_end_tx_phase()
265 trace_rxrpc_txqueue(call, rxrpc_txqueue_end); in rxrpc_end_tx_phase()
269 rxrpc_set_call_state(call, RXRPC_CALL_CLIENT_AWAIT_REPLY); in rxrpc_end_tx_phase()
270 trace_rxrpc_txqueue(call, rxrpc_txqueue_await_reply); in rxrpc_end_tx_phase()
274 rxrpc_call_completed(call); in rxrpc_end_tx_phase()
275 trace_rxrpc_txqueue(call, rxrpc_txqueue_end); in rxrpc_end_tx_phase()
279 kdebug("end_tx %s", rxrpc_call_states[__rxrpc_call_state(call)]); in rxrpc_end_tx_phase()
280 rxrpc_proto_abort(call, call->tx_top, abort_why); in rxrpc_end_tx_phase()
286 * Begin the reply reception phase of a call.
288 static bool rxrpc_receiving_reply(struct rxrpc_call *call) in rxrpc_receiving_reply() argument
292 rxrpc_seq_t top = READ_ONCE(call->tx_top); in rxrpc_receiving_reply()
294 if (call->ackr_reason) { in rxrpc_receiving_reply()
298 WRITE_ONCE(call->delay_ack_at, timo); in rxrpc_receiving_reply()
299 trace_rxrpc_timer(call, rxrpc_timer_init_for_reply, now); in rxrpc_receiving_reply()
302 if (!test_bit(RXRPC_CALL_TX_LAST, &call->flags)) { in rxrpc_receiving_reply()
303 if (!rxrpc_rotate_tx_window(call, top, &summary)) { in rxrpc_receiving_reply()
304 rxrpc_proto_abort(call, top, rxrpc_eproto_early_reply); in rxrpc_receiving_reply()
309 rxrpc_end_tx_phase(call, true, rxrpc_eproto_unexpected_reply); in rxrpc_receiving_reply()
316 static void rxrpc_end_rx_phase(struct rxrpc_call *call, rxrpc_serial_t serial) in rxrpc_end_rx_phase() argument
318 rxrpc_seq_t whigh = READ_ONCE(call->rx_highest_seq); in rxrpc_end_rx_phase()
320 _enter("%d,%s", call->debug_id, rxrpc_call_states[__rxrpc_call_state(call)]); in rxrpc_end_rx_phase()
322 trace_rxrpc_receive(call, rxrpc_receive_end, 0, whigh); in rxrpc_end_rx_phase()
324 switch (__rxrpc_call_state(call)) { in rxrpc_end_rx_phase()
326 rxrpc_propose_delay_ACK(call, serial, rxrpc_propose_ack_terminal_ack); in rxrpc_end_rx_phase()
327 rxrpc_call_completed(call); in rxrpc_end_rx_phase()
331 rxrpc_set_call_state(call, RXRPC_CALL_SERVER_ACK_REQUEST); in rxrpc_end_rx_phase()
332 call->expect_req_by = jiffies + MAX_JIFFY_OFFSET; in rxrpc_end_rx_phase()
333 rxrpc_propose_delay_ACK(call, serial, rxrpc_propose_ack_processing_op); in rxrpc_end_rx_phase()
341 static void rxrpc_input_update_ack_window(struct rxrpc_call *call, in rxrpc_input_update_ack_window() argument
344 call->ackr_window = window; in rxrpc_input_update_ack_window()
345 call->ackr_wtop = wtop; in rxrpc_input_update_ack_window()
351 static void rxrpc_input_queue_data(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_queue_data() argument
358 __skb_queue_tail(&call->recvmsg_queue, skb); in rxrpc_input_queue_data()
359 rxrpc_input_update_ack_window(call, window, wtop); in rxrpc_input_queue_data()
360 trace_rxrpc_receive(call, last ? why + 1 : why, sp->hdr.serial, sp->hdr.seq); in rxrpc_input_queue_data()
362 rxrpc_end_rx_phase(call, sp->hdr.serial); in rxrpc_input_queue_data()
368 static void rxrpc_input_data_one(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_data_one() argument
374 unsigned int sack = call->ackr_sack_base; in rxrpc_input_data_one()
375 rxrpc_seq_t window = call->ackr_window; in rxrpc_input_data_one()
376 rxrpc_seq_t wtop = call->ackr_wtop; in rxrpc_input_data_one()
377 rxrpc_seq_t wlimit = window + call->rx_winsize - 1; in rxrpc_input_data_one()
382 rxrpc_inc_stat(call->rxnet, stat_rx_data); in rxrpc_input_data_one()
384 rxrpc_inc_stat(call->rxnet, stat_rx_data_reqack); in rxrpc_input_data_one()
386 rxrpc_inc_stat(call->rxnet, stat_rx_data_jumbo); in rxrpc_input_data_one()
389 if (test_and_set_bit(RXRPC_CALL_RX_LAST, &call->flags) && in rxrpc_input_data_one()
391 return rxrpc_proto_abort(call, seq, rxrpc_eproto_different_last); in rxrpc_input_data_one()
393 if (test_bit(RXRPC_CALL_RX_LAST, &call->flags) && in rxrpc_input_data_one()
396 call->debug_id, seq, window, wtop, wlimit); in rxrpc_input_data_one()
397 return rxrpc_proto_abort(call, seq, rxrpc_eproto_data_after_last); in rxrpc_input_data_one()
401 if (after(seq, call->rx_highest_seq)) in rxrpc_input_data_one()
402 call->rx_highest_seq = seq; in rxrpc_input_data_one()
404 trace_rxrpc_rx_data(call->debug_id, seq, serial, sp->hdr.flags); in rxrpc_input_data_one()
420 else if (!skb_queue_empty(&call->rx_oos_queue)) in rxrpc_input_data_one()
423 call->ackr_nr_unacked++; in rxrpc_input_data_one()
427 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_none); in rxrpc_input_data_one()
430 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_advance); in rxrpc_input_data_one()
437 spin_lock(&call->recvmsg_queue.lock); in rxrpc_input_data_one()
438 rxrpc_input_queue_data(call, skb, window, wtop, rxrpc_receive_queue); in rxrpc_input_data_one()
441 while ((oos = skb_peek(&call->rx_oos_queue))) { in rxrpc_input_data_one()
447 __skb_unlink(oos, &call->rx_oos_queue); in rxrpc_input_data_one()
450 call->ackr_sack_table[sack] = 0; in rxrpc_input_data_one()
451 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_fill); in rxrpc_input_data_one()
455 rxrpc_input_queue_data(call, oos, window, wtop, in rxrpc_input_data_one()
459 spin_unlock(&call->recvmsg_queue.lock); in rxrpc_input_data_one()
461 call->ackr_sack_base = sack; in rxrpc_input_data_one()
470 if (call->ackr_sack_table[sack % RXRPC_SACK_SIZE]) { in rxrpc_input_data_one()
475 call->ackr_sack_table[sack % RXRPC_SACK_SIZE] |= 1; in rxrpc_input_data_one()
476 trace_rxrpc_sack(call, seq, sack, rxrpc_sack_oos); in rxrpc_input_data_one()
480 rxrpc_input_update_ack_window(call, window, wtop); in rxrpc_input_data_one()
483 skb_queue_walk(&call->rx_oos_queue, oos) { in rxrpc_input_data_one()
488 __skb_queue_before(&call->rx_oos_queue, oos, skb); in rxrpc_input_data_one()
494 __skb_queue_tail(&call->rx_oos_queue, skb); in rxrpc_input_data_one()
496 trace_rxrpc_receive(call, last ? rxrpc_receive_oos_last : rxrpc_receive_oos, in rxrpc_input_data_one()
502 rxrpc_send_ACK(call, ack_reason, serial, in rxrpc_input_data_one()
505 rxrpc_propose_delay_ACK(call, serial, in rxrpc_input_data_one()
512 static bool rxrpc_input_split_jumbo(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_split_jumbo() argument
539 rxrpc_input_data_one(call, jskb, ¬ify); in rxrpc_input_split_jumbo()
552 rxrpc_input_data_one(call, skb, ¬ify); in rxrpc_input_split_jumbo()
554 trace_rxrpc_notify_socket(call->debug_id, sp->hdr.serial); in rxrpc_input_split_jumbo()
555 rxrpc_notify_socket(call); in rxrpc_input_split_jumbo()
567 static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_data() argument
574 call->ackr_window, call->ackr_wtop, call->rx_highest_seq, in rxrpc_input_data()
577 if (__rxrpc_call_is_complete(call)) in rxrpc_input_data()
580 switch (__rxrpc_call_state(call)) { in rxrpc_input_data()
586 if (!rxrpc_receiving_reply(call)) in rxrpc_input_data()
591 unsigned long timo = READ_ONCE(call->next_req_timo); in rxrpc_input_data()
597 WRITE_ONCE(call->expect_req_by, expect_req_by); in rxrpc_input_data()
598 rxrpc_reduce_call_timer(call, expect_req_by, now, in rxrpc_input_data()
608 if (!rxrpc_input_split_jumbo(call, skb)) { in rxrpc_input_data()
609 rxrpc_proto_abort(call, sp->hdr.seq, rxrpc_badmsg_bad_jumbo); in rxrpc_input_data()
615 trace_rxrpc_notify_socket(call->debug_id, serial); in rxrpc_input_data()
616 rxrpc_notify_socket(call); in rxrpc_input_data()
623 static void rxrpc_complete_rtt_probe(struct rxrpc_call *call, in rxrpc_complete_rtt_probe() argument
635 avail = READ_ONCE(call->rtt_avail); in rxrpc_complete_rtt_probe()
638 for (i = 0; i < ARRAY_SIZE(call->rtt_serial); i++) { in rxrpc_complete_rtt_probe()
642 sent_at = call->rtt_sent_at[i]; in rxrpc_complete_rtt_probe()
643 orig_serial = call->rtt_serial[i]; in rxrpc_complete_rtt_probe()
646 clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail); in rxrpc_complete_rtt_probe()
648 set_bit(i, &call->rtt_avail); in rxrpc_complete_rtt_probe()
649 rxrpc_peer_add_rtt(call, type, i, acked_serial, ack_serial, in rxrpc_complete_rtt_probe()
658 trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_obsolete, i, in rxrpc_complete_rtt_probe()
660 clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail); in rxrpc_complete_rtt_probe()
662 set_bit(i, &call->rtt_avail); in rxrpc_complete_rtt_probe()
667 trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_lost, 9, 0, acked_serial, 0, 0); in rxrpc_complete_rtt_probe()
673 static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb, in rxrpc_input_ackinfo() argument
684 if (call->tx_winsize != rwind) { in rxrpc_input_ackinfo()
685 if (rwind > call->tx_winsize) in rxrpc_input_ackinfo()
687 trace_rxrpc_rx_rwind_change(call, sp->hdr.serial, rwind, wake); in rxrpc_input_ackinfo()
688 call->tx_winsize = rwind; in rxrpc_input_ackinfo()
691 if (call->cong_ssthresh > rwind) in rxrpc_input_ackinfo()
692 call->cong_ssthresh = rwind; in rxrpc_input_ackinfo()
696 peer = call->peer; in rxrpc_input_ackinfo()
705 wake_up(&call->waitq); in rxrpc_input_ackinfo()
711 static rxrpc_seq_t rxrpc_input_check_prev_ack(struct rxrpc_call *call, in rxrpc_input_check_prev_ack() argument
715 struct sk_buff *skb = call->cong_last_nack; in rxrpc_input_check_prev_ack()
754 static void rxrpc_input_soft_acks(struct rxrpc_call *call, in rxrpc_input_soft_acks() argument
786 if (lowest_nak != call->acks_lowest_nak) { in rxrpc_input_soft_acks()
787 call->acks_lowest_nak = lowest_nak; in rxrpc_input_soft_acks()
805 static bool rxrpc_is_ack_valid(struct rxrpc_call *call, in rxrpc_is_ack_valid() argument
808 rxrpc_seq_t base = READ_ONCE(call->acks_first_seq); in rxrpc_is_ack_valid()
816 if (after_eq(prev_pkt, call->acks_prev_seq)) in rxrpc_is_ack_valid()
820 if (after_eq(prev_pkt, base + call->tx_winsize)) in rxrpc_is_ack_valid()
835 static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_ack() argument
849 return rxrpc_proto_abort(call, 0, rxrpc_badmsg_short_ack); in rxrpc_input_ack()
863 trace_rxrpc_rx_ack(call, ack_serial, acked_serial, in rxrpc_input_ack()
866 rxrpc_inc_stat(call->rxnet, stat_rx_acks[ack.reason]); in rxrpc_input_ack()
871 rxrpc_complete_rtt_probe(call, skb->tstamp, acked_serial, ack_serial, in rxrpc_input_ack()
875 rxrpc_complete_rtt_probe(call, skb->tstamp, acked_serial, ack_serial, in rxrpc_input_ack()
879 rxrpc_complete_rtt_probe(call, skb->tstamp, acked_serial, ack_serial, in rxrpc_input_ack()
887 * lost the call because it switched to a different peer. in rxrpc_input_ack()
892 rxrpc_is_client_call(call)) { in rxrpc_input_ack()
893 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_ack()
899 * indicate a change of address. However, we can retransmit the call in rxrpc_input_ack()
905 call->acks_hard_ack == 0 && in rxrpc_input_ack()
906 rxrpc_is_client_call(call)) { in rxrpc_input_ack()
907 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_ack()
913 if (!rxrpc_is_ack_valid(call, first_soft_ack, prev_pkt)) { in rxrpc_input_ack()
914 trace_rxrpc_rx_discard_ack(call->debug_id, ack_serial, in rxrpc_input_ack()
915 first_soft_ack, call->acks_first_seq, in rxrpc_input_ack()
916 prev_pkt, call->acks_prev_seq); in rxrpc_input_ack()
924 return rxrpc_proto_abort(call, 0, rxrpc_badmsg_short_ack_info); in rxrpc_input_ack()
929 if (call->cong_last_nack) { in rxrpc_input_ack()
930 since = rxrpc_input_check_prev_ack(call, &summary, first_soft_ack); in rxrpc_input_ack()
931 rxrpc_free_skb(call->cong_last_nack, rxrpc_skb_put_last_nack); in rxrpc_input_ack()
932 call->cong_last_nack = NULL; in rxrpc_input_ack()
934 summary.nr_new_acks = first_soft_ack - call->acks_first_seq; in rxrpc_input_ack()
935 call->acks_lowest_nak = first_soft_ack + nr_acks; in rxrpc_input_ack()
939 call->acks_latest_ts = skb->tstamp; in rxrpc_input_ack()
940 call->acks_first_seq = first_soft_ack; in rxrpc_input_ack()
941 call->acks_prev_seq = prev_pkt; in rxrpc_input_ack()
947 if (acked_serial && after(acked_serial, call->acks_highest_serial)) in rxrpc_input_ack()
948 call->acks_highest_serial = acked_serial; in rxrpc_input_ack()
954 rxrpc_input_ackinfo(call, skb, &info); in rxrpc_input_ack()
957 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_zero); in rxrpc_input_ack()
960 switch (__rxrpc_call_state(call)) { in rxrpc_input_ack()
970 if (before(hard_ack, call->acks_hard_ack) || in rxrpc_input_ack()
971 after(hard_ack, call->tx_top)) in rxrpc_input_ack()
972 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_outside_window); in rxrpc_input_ack()
973 if (nr_acks > call->tx_top - hard_ack) in rxrpc_input_ack()
974 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_sack_overflow); in rxrpc_input_ack()
976 if (after(hard_ack, call->acks_hard_ack)) { in rxrpc_input_ack()
977 if (rxrpc_rotate_tx_window(call, hard_ack, &summary)) { in rxrpc_input_ack()
978 rxrpc_end_tx_phase(call, false, rxrpc_eproto_unexpected_ack); in rxrpc_input_ack()
985 return rxrpc_proto_abort(call, 0, rxrpc_eproto_ackr_short_sack); in rxrpc_input_ack()
986 rxrpc_input_soft_acks(call, &summary, skb, first_soft_ack, since); in rxrpc_input_ack()
988 call->cong_last_nack = skb; in rxrpc_input_ack()
991 if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) && in rxrpc_input_ack()
992 summary.nr_acks == call->tx_top - hard_ack && in rxrpc_input_ack()
993 rxrpc_is_client_call(call)) in rxrpc_input_ack()
994 rxrpc_propose_ping(call, ack_serial, in rxrpc_input_ack()
997 rxrpc_congestion_management(call, skb, &summary, acked_serial); in rxrpc_input_ack()
1001 rxrpc_send_ACK(call, RXRPC_ACK_PING_RESPONSE, ack_serial, in rxrpc_input_ack()
1004 rxrpc_send_ACK(call, RXRPC_ACK_REQUESTED, ack_serial, in rxrpc_input_ack()
1011 static void rxrpc_input_ackall(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_ackall() argument
1015 if (rxrpc_rotate_tx_window(call, call->tx_top, &summary)) in rxrpc_input_ackall()
1016 rxrpc_end_tx_phase(call, false, rxrpc_eproto_unexpected_ackall); in rxrpc_input_ackall()
1020 * Process an ABORT packet directed at a call.
1022 static void rxrpc_input_abort(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_abort() argument
1026 trace_rxrpc_rx_abort(call, sp->hdr.serial, skb->priority); in rxrpc_input_abort()
1028 rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, in rxrpc_input_abort()
1033 * Process an incoming call packet.
1035 void rxrpc_input_call_packet(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_input_call_packet() argument
1040 _enter("%p,%p", call, skb); in rxrpc_input_call_packet()
1042 if (sp->hdr.serviceId != call->dest_srx.srx_service) in rxrpc_input_call_packet()
1043 call->dest_srx.srx_service = sp->hdr.serviceId; in rxrpc_input_call_packet()
1044 if ((int)sp->hdr.serial - (int)call->rx_serial > 0) in rxrpc_input_call_packet()
1045 call->rx_serial = sp->hdr.serial; in rxrpc_input_call_packet()
1046 if (!test_bit(RXRPC_CALL_RX_HEARD, &call->flags)) in rxrpc_input_call_packet()
1047 set_bit(RXRPC_CALL_RX_HEARD, &call->flags); in rxrpc_input_call_packet()
1049 timo = READ_ONCE(call->next_rx_timo); in rxrpc_input_call_packet()
1054 WRITE_ONCE(call->expect_rx_by, expect_rx_by); in rxrpc_input_call_packet()
1055 rxrpc_reduce_call_timer(call, expect_rx_by, now, in rxrpc_input_call_packet()
1061 return rxrpc_input_data(call, skb); in rxrpc_input_call_packet()
1064 return rxrpc_input_ack(call, skb); in rxrpc_input_call_packet()
1074 return rxrpc_input_abort(call, skb); in rxrpc_input_call_packet()
1077 return rxrpc_input_ackall(call, skb); in rxrpc_input_call_packet()
1085 * Handle a new service call on a channel implicitly completing the preceding
1086 * call on that channel. This does not apply to client conns.
1090 void rxrpc_implicit_end_call(struct rxrpc_call *call, struct sk_buff *skb) in rxrpc_implicit_end_call() argument
1092 switch (__rxrpc_call_state(call)) { in rxrpc_implicit_end_call()
1094 rxrpc_call_completed(call); in rxrpc_implicit_end_call()
1099 rxrpc_abort_call(call, 0, RX_CALL_DEAD, -ESHUTDOWN, in rxrpc_implicit_end_call()
1101 trace_rxrpc_improper_term(call); in rxrpc_implicit_end_call()
1105 rxrpc_input_call_event(call, skb); in rxrpc_implicit_end_call()