142 lines
4.6 KiB
C
142 lines
4.6 KiB
C
/*-
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 2018-2019
|
|
* Netflix Inc.
|
|
* All rights reserved.
|
|
*
|
|
* 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("$FreeBSD$");
|
|
*
|
|
*/
|
|
/**
|
|
* Author: Randall Stewart <rrs@netflix.com>
|
|
*/
|
|
#ifndef __tcp_ratelimit_h__
|
|
#define __tcp_ratelimit_h__
|
|
|
|
struct m_snd_tag;
|
|
|
|
/* Flags on an individual rate */
|
|
#define HDWRPACE_INITED 0x0001
|
|
#define HDWRPACE_TAGPRESENT 0x0002
|
|
#define HDWRPACE_IFPDEPARTED 0x0004
|
|
struct tcp_hwrate_limit_table {
|
|
const struct tcp_rate_set *ptbl; /* Pointer to parent table */
|
|
struct m_snd_tag *tag; /* Send tag if needed (chelsio) */
|
|
uint64_t rate; /* Rate we get in Bytes per second (Bps) */
|
|
uint32_t time_between; /* Time-Gap between packets at this rate */
|
|
uint32_t flags;
|
|
};
|
|
|
|
/* Rateset flags */
|
|
#define RS_IS_DEFF 0x0001 /* Its a lagg, do a double lookup */
|
|
#define RS_IS_INTF 0x0002 /* Its a plain interface */
|
|
#define RS_NO_PRE 0x0004 /* The interfacd has set rates */
|
|
#define RS_INT_TBL 0x0010 /*
|
|
* The table is the internal version
|
|
* which has special setup requirements.
|
|
*/
|
|
#define RS_IS_DEAD 0x0020 /* The RS is dead list */
|
|
#define RS_FUNERAL_SCHD 0x0040 /* Is a epoch call scheduled to bury this guy?*/
|
|
#define RS_INTF_NO_SUP 0x0100 /* The interface does not support the ratelimiting */
|
|
|
|
struct tcp_rate_set {
|
|
struct sysctl_ctx_list sysctl_ctx;
|
|
CK_LIST_ENTRY(tcp_rate_set) next;
|
|
struct ifnet *rs_ifp;
|
|
struct tcp_hwrate_limit_table *rs_rlt;
|
|
uint64_t rs_flows_using;
|
|
uint64_t rs_flow_limit;
|
|
uint32_t rs_if_dunit;
|
|
int rs_rate_cnt;
|
|
int rs_min_seg;
|
|
int rs_highest_valid;
|
|
int rs_lowest_valid;
|
|
int rs_disable;
|
|
int rs_flags;
|
|
struct epoch_context rs_epoch_ctx;
|
|
};
|
|
|
|
CK_LIST_HEAD(head_tcp_rate_set, tcp_rate_set);
|
|
|
|
/* Request flags */
|
|
#define RS_PACING_EXACT_MATCH 0x0001 /* Need an exact match for rate */
|
|
#define RS_PACING_GT 0x0002 /* Greater than requested */
|
|
#define RS_PACING_GEQ 0x0004 /* Greater than or equal too */
|
|
#define RS_PACING_LT 0x0008 /* Less than requested rate */
|
|
#define RS_PACING_SUB_OK 0x0010 /* If a rate can't be found get the
|
|
* next best rate (highest or lowest). */
|
|
#ifdef _KERNEL
|
|
#ifdef RATELIMIT
|
|
#define DETAILED_RATELIMIT_SYSCTL 1 /*
|
|
* Undefine this if you don't want
|
|
* detailed rates to appear in
|
|
* net.inet.tcp.rl.
|
|
* With the defintion each rate
|
|
* shows up in your sysctl tree
|
|
* this can be big.
|
|
*/
|
|
|
|
const struct tcp_hwrate_limit_table *
|
|
tcp_set_pacing_rate(struct tcpcb *tp, struct ifnet *ifp,
|
|
uint64_t bytes_per_sec, int flags, int *error);
|
|
|
|
const struct tcp_hwrate_limit_table *
|
|
tcp_chg_pacing_rate(const struct tcp_hwrate_limit_table *crte,
|
|
struct tcpcb *tp, struct ifnet *ifp,
|
|
uint64_t bytes_per_sec, int flags, int *error);
|
|
void
|
|
tcp_rel_pacing_rate(const struct tcp_hwrate_limit_table *crte,
|
|
struct tcpcb *tp);
|
|
#else
|
|
static inline const struct tcp_hwrate_limit_table *
|
|
tcp_set_pacing_rate(struct tcpcb *tp, struct ifnet *ifp,
|
|
uint64_t bytes_per_sec, int flags, int *error)
|
|
{
|
|
if (error)
|
|
*error = EOPNOTSUPP;
|
|
return (NULL);
|
|
}
|
|
|
|
static inline const struct tcp_hwrate_limit_table *
|
|
tcp_chg_pacing_rate(const struct tcp_hwrate_limit_table *crte,
|
|
struct tcpcb *tp, struct ifnet *ifp,
|
|
uint64_t bytes_per_sec, int flags, int *error)
|
|
{
|
|
if (error)
|
|
*error = EOPNOTSUPP;
|
|
return (NULL);
|
|
}
|
|
|
|
static inline void
|
|
tcp_rel_pacing_rate(const struct tcp_hwrate_limit_table *crte,
|
|
struct tcpcb *tp)
|
|
{
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
#endif
|
|
#endif
|