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35c7bb3407
freebsd-dev/sys/conf
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Randall Stewart 35c7bb3407 This commit adds BBR (Bottleneck Bandwidth and RTT) congestion control. This 
is a completely separate TCP stack (tcp_bbr.ko) that will be built only if
you add the make options WITH_EXTRA_TCP_STACKS=1 and also include the option
TCPHPTS. You can also include the RATELIMIT option if you have a NIC interface that
supports hardware pacing, BBR understands how to use such a feature.

Note that this commit also adds in a general purpose time-filter which
allows you to have a min-filter or max-filter. A filter allows you to
have a low (or high) value for some period of time and degrade slowly
to another value has time passes. You can find out the details of
BBR by looking at the original paper at:

https://queue.acm.org/detail.cfm?id=3022184

or consult many other web resources you can find on the web
referenced by "BBR congestion control". It should be noted that
BBRv1 (which this is) does tend to unfairness in cases of small
buffered paths, and it will usually get less bandwidth in the case
of large BDP paths(when competing with new-reno or cubic flows). BBR
is still an active research area and we do plan on  implementing V2
of BBR to see if it is an improvement over V1.

Sponsored by:	Netflix Inc.
Differential Revision:	https://reviews.freebsd.org/D21582
2019-09-24 18:18:11 +00:00
..
config.mk Add comments about KERN_OPT here. 2019-07-19 17:48:29 +00:00
dtb.build.mk fdt: Fix installation of aarch64 dtb 2019-05-02 16:56:03 +00:00
dtb.mk Allow kernel config to specify DTS/DTSO to build, and out-of-tree support 2019-03-26 02:45:23 +00:00
files This commit adds BBR (Bottleneck Bandwidth and RTT) congestion control. This 2019-09-24 18:18:11 +00:00
files.amd64 Fix bogusly declared WERRORs in kernel build 2019-08-25 19:39:31 +00:00
files.arm Add generic arm/arm64 secure-monitor SMCCC interface and switch 2019-09-13 15:56:33 +00:00
files.arm64 Add support for Intel Stratix 10 platform. 2019-09-13 16:50:57 +00:00
files.i386 Fix bogusly declared WERRORs in kernel build 2019-08-25 19:39:31 +00:00
files.mips Add support for BERI statcounters. 2019-09-18 16:13:50 +00:00
files.powerpc powerpc64/powernv: Add opal NVRAM driver for PowerNV systems 2019-09-14 03:30:34 +00:00
files.riscv Connect Xilinx AXI drivers and Cadence Ethernet MAC to the RISC-V build. 2019-05-08 16:06:54 +00:00
files.sparc64 ukbdmap.h rule was identical on all platforms, so move them into sys/conf/files. 2019-08-12 23:25:14 +00:00
files.x86 Move the common x86 ipmi files to files.x86. The powerpc file list is different 2019-08-14 20:58:50 +00:00
kern.mk Honor CWARNFLAGS.clang/gcc in the kernel build 2019-09-22 18:27:57 +00:00
kern.opts.mk Remove NAND and NANDFS support 2019-06-25 04:50:09 +00:00
kern.post.mk Back out r351799 2019-09-04 14:32:04 +00:00
kern.pre.mk Turn off -Werror for gcc 4.2.1 2019-08-23 16:42:04 +00:00
kmod_syms_prefix.awk Add the infrastructure to support loading multiple versions of TCP 2017-06-08 20:41:28 +00:00
kmod_syms.awk
kmod.mk Turn off -Werror for gcc 4.2.1 2019-08-23 16:42:04 +00:00
ldscript.amd64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.arm Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.arm64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.i386 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.cfe Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.mips64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.mips.octeon1 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.powerpc Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.powerpc64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.powerpcspe Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
ldscript.riscv riscv: Ensure that BSS is 8-byte aligned 2019-09-09 15:57:24 +00:00
ldscript.set_padding Fix dpcpu and vnet panics with complex types at the end of the section. 2019-06-08 17:44:42 +00:00
ldscript.sparc64 Expose the kernel's build-ID through sysctl 2019-06-04 13:07:10 +00:00
Makefile.amd64 Retire CLANG_NO_IAS34 2018-11-01 23:11:47 +00:00
Makefile.arm Remove support for kernel.tramp and kernel.tramp.gz 2019-07-27 17:24:19 +00:00
Makefile.arm64 Revert r336353 completely based on protest; compatibility shims incoming 2018-07-17 14:11:30 +00:00
Makefile.i386 Retire CLANG_NO_IAS34 2018-11-01 23:11:47 +00:00
Makefile.mips Revert r336353 completely based on protest; compatibility shims incoming 2018-07-17 14:11:30 +00:00
Makefile.powerpc Revert r336353 completely based on protest; compatibility shims incoming 2018-07-17 14:11:30 +00:00
Makefile.riscv Revert r336353 completely based on protest; compatibility shims incoming 2018-07-17 14:11:30 +00:00
Makefile.sparc64 Revert r336353 completely based on protest; compatibility shims incoming 2018-07-17 14:11:30 +00:00
makeLINT.mk Clean LINT* kernel configurations for arm* 2019-09-24 01:56:27 +00:00
makeLINT.sed
newvers.sh newvers: append commit count to uname version string 2019-08-01 14:13:04 +00:00
NOTES Add dwgpio to NOTES so it gets built in LINT kernels. 2019-09-05 17:54:57 +00:00
options Add kernel-side support for in-kernel TLS. 2019-08-27 00:01:56 +00:00
options.amd64 Remove iBCS2, part2: general kernel 2018-12-19 21:57:58 +00:00
options.arm Remove now the cow unused CPU_ARM9 and CPU_FA526 options. These are for 2018-07-28 11:00:45 +00:00
options.arm64 Add support for Intel Stratix 10 platform. 2019-09-13 16:50:57 +00:00
options.i386 i386: Merge PAE and non-PAE pmaps into same kernel. 2019-01-30 02:07:13 +00:00
options.mips Add SMP support for BERI CPU. 2018-04-12 17:43:19 +00:00
options.powerpc powerpc/pmap64: Make moea64 statistics optional 2019-07-25 03:47:27 +00:00
options.riscv o Add driver for PLIC (Platform-Level Interrupt Controller) device. 2018-06-12 17:45:15 +00:00
options.sparc64
systags.sh sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
WITHOUT_SOURCELESS
WITHOUT_SOURCELESS_HOST
WITHOUT_SOURCELESS_UCODE Remove adv(4) and adw(4) 2018-10-22 02:34:47 +00:00