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96eb0d90cd
freebsd-dev/sys/conf
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Randall Stewart 96eb0d90cd tcp: With the right options in the kernel cc_cubic stays in slowstart always. 
So this is a subtle bug I have found in cubic. If you compile a number of options into the kernel (accounting and tracking) then
all of the kernel code "knows" the proper offset of t_rttupdatecnt however cubic does not see the options (and htcp too) and thus
will look for the count in the wrong place seeing 0. Which then means it never builds an MIN RTT which then means it
always hangs in slowstart.

The solution is to put all options that effect tcpcb size into the opt_global.h so that the kernel
has a consistent view of the tcpcb size.

Reviewed by: tuexen, rscheff
Sponsored by: Netflix Inc
Differential Revision:https://reviews.freebsd.org/D40761
2023-06-28 11:18:47 -04:00
..
config.mk config.mk: All options in DEFAULTS are now defined in opt_global.h 2022-10-24 12:13:04 -06:00
dtb.build.mk dtb: Be much less verbose in the building of dtb 2022-10-29 10:13:54 -06:00
dtb.mk
files zfs: merge openzfs/zfs@feff9dfed 2023-06-10 19:31:17 +02:00
files.amd64 ossl: Compile newly added files into the kernel if so requested 2023-06-02 13:43:15 -04:00
files.arm zfs: merge openzfs/zfs@431083f75 2023-04-03 16:49:30 +02:00
files.arm64 arm64: Enable the Hyper-V keyboard driver 2023-06-21 13:17:40 +01:00
files.i386 wdatwd: Add support for ACPI WDAT based watchdog timer. 2023-01-04 00:36:24 +09:00
files.powerpc powerpc: syscalls.c is standard 2023-04-24 09:25:42 -06:00
files.riscv riscv: Compile instr_size.c into the kernel when DTrace is configured 2023-04-21 09:26:17 -04:00
files.x86 ipmi: add Block Transfer interface support 2023-06-07 12:30:47 +03:00
kern.mk sys: Enable -Wunused-but-set-variable for clang 15+. 2023-05-25 10:44:53 -07:00
kern.opts.mk kern.opts.mk: rationalize i386 EFI default with src.opts.mk 2023-05-12 11:04:00 -04:00
kern.post.mk kern.post.mk: fix PORTSDIR handling 2023-03-27 13:57:57 +02:00
kern.pre.mk arm64: add KASAN support 2023-03-23 16:34:33 -05:00
kmod_syms_prefix.awk
kmod_syms.awk
kmod.mk sys: Retire OPENZFS_CWARNFLAGS now that it is empty. 2023-03-22 12:35:30 -07:00
kmod.opts.mk
ldscript.amd64
ldscript.arm
ldscript.arm64
ldscript.i386
ldscript.kmod.amd64
ldscript.kmod.i386
ldscript.powerpc
ldscript.powerpc64
ldscript.powerpc64le
ldscript.powerpcspe
ldscript.riscv
Makefile.amd64 Clarify DTR_ENABLED make variable 2023-01-12 11:03:49 -04:00
Makefile.arm
Makefile.arm64 arm64: Use FULLKERNEL instead of .ALLSRC in .bin target 2023-04-18 11:41:57 -04:00
Makefile.i386
Makefile.powerpc
Makefile.riscv riscv: always include frame pointer 2023-01-12 11:04:24 -04:00
newvers.sh newvers: Use correct regexp 2023-04-21 10:24:25 -06:00
NOTES tslog: Optionally instrument pmap_zero_page 2023-06-04 10:16:31 -07:00
options tcp: With the right options in the kernel cc_cubic stays in slowstart always. 2023-06-28 11:18:47 -04:00
options.amd64 x86: Add MPTABLE_LINUX_BUG_COMPAT option 2022-10-17 23:02:22 -07:00
options.arm arm: Remove useless armv6/armv7 options 2022-10-20 10:48:31 -06:00
options.arm64 arm64: emulate swp/swpb instructions 2023-05-15 10:42:10 -05:00
options.i386 x86: Add MPTABLE_LINUX_BUG_COMPAT option 2022-10-17 23:02:22 -07:00
options.powerpc
options.riscv riscv: retire the FPE kernel option 2023-05-02 15:01:31 -03:00
std.nodebug
sysent.mk
systags.sh
vdso_amd64_ia32.ldscript spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vdso_amd64.ldscript spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
WITHOUT_SOURCELESS
WITHOUT_SOURCELESS_HOST
WITHOUT_SOURCELESS_UCODE retire cp(4) driver 2022-12-13 15:24:52 -05:00