52467047aa
Use recent best practices for Copyright form at the top of the license: 1. Remove all the All Rights Reserved clauses on our stuff. Where we piggybacked others, use a separate line to make things clear. 2. Use "Netflix, Inc." everywhere. 3. Use a single line for the copyright for grep friendliness. 4. Use date ranges in all places for our stuff. Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)
69 lines
2.8 KiB
C
69 lines
2.8 KiB
C
#ifndef __pacer_timer_h__
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#define __pacer_timer_h__
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/*-
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* Copyright (c) 2017 Netflix, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* __FBSDID("$FreeBSD$");
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*/
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/* Common defines and such used by both RACK and BBR */
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/* Special values for mss accounting array */
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#define TCP_MSS_ACCT_JUSTRET 0
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#define TCP_MSS_ACCT_SNDACK 1
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#define TCP_MSS_ACCT_PERSIST 2
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#define TCP_MSS_ACCT_ATIMER 60
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#define TCP_MSS_ACCT_INPACE 61
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#define TCP_MSS_ACCT_LATE 62
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#define TCP_MSS_SMALL_SIZE_OFF 63 /* Point where small sizes enter */
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#define TCP_MSS_ACCT_SIZE 70
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#define TCP_MSS_SMALL_MAX_SIZE_DIV (TCP_MSS_ACCT_SIZE - TCP_MSS_SMALL_SIZE_OFF)
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/* Magic flags to tell whats cooking on the pacing wheel */
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#define PACE_PKT_OUTPUT 0x01 /* Output Packets being paced */
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#define PACE_TMR_RACK 0x02 /* RACK timer running */
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#define PACE_TMR_TLP 0x04 /* TLP timer running */
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#define PACE_TMR_RXT 0x08 /* Retransmit timer running */
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#define PACE_TMR_PERSIT 0x10 /* Persists timer running */
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#define PACE_TMR_KEEP 0x20 /* Keep alive timer running */
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#define PACE_TMR_DELACK 0x40 /* Delayed ack timer running */
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#define PACE_TMR_MASK (PACE_TMR_KEEP|PACE_TMR_PERSIT|PACE_TMR_RXT|PACE_TMR_TLP|PACE_TMR_RACK|PACE_TMR_DELACK)
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/* Magic flags for tracing progress events */
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#define PROGRESS_DROP 1
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#define PROGRESS_UPDATE 2
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#define PROGRESS_CLEAR 3
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#define PROGRESS_START 4
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/* RTT sample methods */
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#define USE_RTT_HIGH 0
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#define USE_RTT_LOW 1
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#define USE_RTT_AVG 2
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#ifdef _KERNEL
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/* We have only 7 bits in rack so assert its true */
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CTASSERT((PACE_TMR_MASK & 0x80) == 0);
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#endif
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#endif
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