1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * NET		Generic infrastructure for INET connection oriented protocols.
60 /** inet_connection_sock - INET connection oriented sock
83  * @icsk_probes_tstamp:    Probe timestamp (cleared by non-zero window ack)
130 		__u32		  lrcvtime;	 /* timestamp of last received data packet */
167 	return (void *)inet_csk(sk)->icsk_ca_priv;  in inet_csk_ca()
191 	inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_SCHED;  in inet_csk_schedule_ack()
196 	return inet_csk(sk)->icsk_ack.pending & ICSK_ACK_SCHED;  in inet_csk_ack_scheduled()
201 	memset(&inet_csk(sk)->icsk_ack, 0, sizeof(inet_csk(sk)->icsk_ack));  in inet_csk_delack_init()
212 		icsk->icsk_pending = 0;  in inet_csk_clear_xmit_timer()
214 		sk_stop_timer(sk, &icsk->icsk_retransmit_timer);  in inet_csk_clear_xmit_timer()
217 		icsk->icsk_ack.pending = 0;  in inet_csk_clear_xmit_timer()
218 		icsk->icsk_ack.retry = 0;  in inet_csk_clear_xmit_timer()
220 		sk_stop_timer(sk, &icsk->icsk_delack_timer);  in inet_csk_clear_xmit_timer()
235 	if (!icsk->nata_retries_enabled)  in get_nata_rto()
248 	if (icsk->nata_retries_type == NATA_STL)  in get_nata_rto()
249 		return sk->sk_state == TCP_SYN_SENT ?  in get_nata_rto()
250 			icsk->nata_syn_rto : icsk->nata_data_rto;  in get_nata_rto()
255 	when_nata = icsk->nata_data_rto;  in get_nata_rto()
256 	if (icsk->icsk_retransmits > icsk->nata_data_retries) {  in get_nata_rto()
257 		shift = icsk->icsk_retransmits - icsk->nata_data_retries;  in get_nata_rto()
290 		icsk->icsk_pending = what;  in inet_csk_reset_xmit_timer()
291 		icsk->icsk_timeout = jiffies + when;  in inet_csk_reset_xmit_timer()
292 		sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout);  in inet_csk_reset_xmit_timer()
294 		icsk->icsk_ack.pending |= ICSK_ACK_TIMER;  in inet_csk_reset_xmit_timer()
295 		icsk->icsk_ack.timeout = jiffies + when;  in inet_csk_reset_xmit_timer()
296 		sk_reset_timer(sk, &icsk->icsk_delack_timer, icsk->icsk_ack.timeout);  in inet_csk_reset_xmit_timer()
306         u64 when = (u64)icsk->icsk_rto << icsk->icsk_backoff;  in inet_csk_rto_backoff()
332 	reqsk_queue_added(&inet_csk(sk)->icsk_accept_queue);  in inet_csk_reqsk_queue_added()
337 	return reqsk_queue_len(&inet_csk(sk)->icsk_accept_queue);  in inet_csk_reqsk_queue_len()
342 	return inet_csk_reqsk_queue_len(sk) >= sk->sk_max_ack_backlog;  in inet_csk_reqsk_queue_is_full()
352 	this_cpu_inc(*sk->sk_prot->orphan_count);  in inet_csk_prepare_for_destroy_sock()
363 	return !reqsk_queue_empty(&inet_csk(sk)->icsk_accept_queue) ?  in inet_csk_listen_poll()
382 	inet_csk(sk)->icsk_ack.pingpong = TCP_PINGPONG_THRESH;  in inet_csk_enter_pingpong_mode()
387 	inet_csk(sk)->icsk_ack.pingpong = 0;  in inet_csk_exit_pingpong_mode()
392 	return inet_csk(sk)->icsk_ack.pingpong >= TCP_PINGPONG_THRESH;  in inet_csk_in_pingpong_mode()
397 	return inet_sk(sk)->is_icsk && !!inet_csk(sk)->icsk_ulp_ops;  in inet_csk_has_ulp()
404 	spin_lock_init(&icsk->icsk_accept_queue.rskq_lock);  in inet_init_csk_locks()
405 	spin_lock_init(&icsk->icsk_accept_queue.fastopenq.lock);  in inet_init_csk_locks()