2018-06-07 18:18:13 +00:00
|
|
|
#ifndef __pacer_timer_h__
|
|
|
|
|
#define __pacer_timer_h__
|
|
|
|
|
/*-
|
2019-02-04 21:28:25 +00:00
|
|
|
* Copyright (c) 2017 Netflix, Inc.
|
2018-06-07 18:18:13 +00:00
|
|
|
*
|
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
|
* are met:
|
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
|
*
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
|
*
|
|
|
|
|
* __FBSDID("$FreeBSD$");
|
|
|
|
|
*/
|
|
|
|
|
/* Common defines and such used by both RACK and BBR */
|
|
|
|
|
/* Special values for mss accounting array */
|
|
|
|
|
#define TCP_MSS_ACCT_JUSTRET 0
|
|
|
|
|
#define TCP_MSS_ACCT_SNDACK 1
|
|
|
|
|
#define TCP_MSS_ACCT_PERSIST 2
|
|
|
|
|
#define TCP_MSS_ACCT_ATIMER 60
|
|
|
|
|
#define TCP_MSS_ACCT_INPACE 61
|
|
|
|
|
#define TCP_MSS_ACCT_LATE 62
|
|
|
|
|
#define TCP_MSS_SMALL_SIZE_OFF 63 /* Point where small sizes enter */
|
|
|
|
|
#define TCP_MSS_ACCT_SIZE 70
|
|
|
|
|
#define TCP_MSS_SMALL_MAX_SIZE_DIV (TCP_MSS_ACCT_SIZE - TCP_MSS_SMALL_SIZE_OFF)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Magic flags to tell whats cooking on the pacing wheel */
|
|
|
|
|
#define PACE_PKT_OUTPUT 0x01 /* Output Packets being paced */
|
|
|
|
|
#define PACE_TMR_RACK 0x02 /* RACK timer running */
|
|
|
|
|
#define PACE_TMR_TLP 0x04 /* TLP timer running */
|
|
|
|
|
#define PACE_TMR_RXT 0x08 /* Retransmit timer running */
|
|
|
|
|
#define PACE_TMR_PERSIT 0x10 /* Persists timer running */
|
|
|
|
|
#define PACE_TMR_KEEP 0x20 /* Keep alive timer running */
|
|
|
|
|
#define PACE_TMR_DELACK 0x40 /* Delayed ack timer running */
|
|
|
|
|
#define PACE_TMR_MASK (PACE_TMR_KEEP|PACE_TMR_PERSIT|PACE_TMR_RXT|PACE_TMR_TLP|PACE_TMR_RACK|PACE_TMR_DELACK)
|
|
|
|
|
|
|
|
|
|
/* Magic flags for tracing progress events */
|
|
|
|
|
#define PROGRESS_DROP 1
|
|
|
|
|
#define PROGRESS_UPDATE 2
|
|
|
|
|
#define PROGRESS_CLEAR 3
|
|
|
|
|
#define PROGRESS_START 4
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* RTT sample methods */
|
|
|
|
|
#define USE_RTT_HIGH 0
|
|
|
|
|
#define USE_RTT_LOW 1
|
|
|
|
|
#define USE_RTT_AVG 2
|
|
|
|
|
|
|
|
|
|
#ifdef _KERNEL
|
|
|
|
|
/* We have only 7 bits in rack so assert its true */
|
|
|
|
|
CTASSERT((PACE_TMR_MASK & 0x80) == 0);
|
|
|
|
|
#endif
|
|
|
|
|
#endif
|
