#ifndef __pacer_timer_h__ #define __pacer_timer_h__ /*- * Copyright (c) 2017 Netflix, Inc. * * 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 |