Feature #7092
closed
Kernel modules for alternate congestion control algorithms
Added by Chris Collins almost 8 years ago.
Updated over 3 years ago.
Category:
Operating System
Plus Target Version:
21.05
Description
These are provided via kernel modules cc_cubic and cc_htcp
I am aware pfsense when its not the endpoint these are useless, but when a VPN is configured on the router, then the router becomes an endpoint so as such these have merit in configurations where a VPN is configured.
- Category set to Operating System
There are more available now:
/boot/kernel/cc_cdg.ko
/boot/kernel/cc_chd.ko
/boot/kernel/cc_cubic.ko
/boot/kernel/cc_dctcp.ko
/boot/kernel/cc_hd.ko
/boot/kernel/cc_htcp.ko
/boot/kernel/cc_vegas.ko
Current default is newreno, which is built into the kernel.
Set via `net.inet.tcp.cc.algorithm`
there is no any '/boot/kernel/cc_*' or 'sysctl net.inet.tcp.cc.available' (except newreno) on 2.4.5-p1 and 2.5.0.a.20200812.1850
Before version 2.5.0, I could use these modules, which I make from source code. But since version 2.5.0, this no longer works, and when you try to load the module, the following entries are visible in dmesg:
link_elf_obj: symbol tcp_do_rfc3465 undefined
linker_load_file: /boot/modules/cc_htcp.ko - unsupported file type
- Status changed from New to Pull Request Review
- Target version set to 2.6.0
- Plus Target Version set to 21.05
- Status changed from Pull Request Review to Feedback
- % Done changed from 0 to 100
- Subject changed from please add cubic and htcp congestion providers to Modules for alternate congestion control algorithms
Updating subject for release notes.
- Subject changed from Modules for alternate congestion control algorithms to Kernel modules for alternate congestion control algorithms
- Status changed from Feedback to Closed
Modules are all there on current builds (CE and Plus):
: ls -l /boot/kernel/cc*
-r-xr-xr-x 1 root wheel 32696 May 20 15:20 /boot/kernel/cc_cdg.ko
-r-xr-xr-x 1 root wheel 24968 May 20 15:20 /boot/kernel/cc_chd.ko
-r-xr-xr-x 1 root wheel 20760 May 20 15:20 /boot/kernel/cc_cubic.ko
-r-xr-xr-x 1 root wheel 22864 May 20 15:20 /boot/kernel/cc_dctcp.ko
-r-xr-xr-x 1 root wheel 21040 May 20 15:20 /boot/kernel/cc_hd.ko
-r-xr-xr-x 1 root wheel 22088 May 20 15:20 /boot/kernel/cc_htcp.ko
-r-xr-xr-x 1 root wheel 21992 May 20 15:20 /boot/kernel/cc_vegas.ko
- Target version changed from 2.6.0 to 2.5.2
- Assignee set to Viktor Gurov
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