On Fri, 14 Dec 2007 09:48:32 +0100 Michael Kerrisk <mtk.manpages@xxxxxxxxxxxxxx> wrote: > Hello Linux networking folk, > > I received the patch below for the tcp.7 man page. Would anybody here be > prepared to review the new material / double check the details? > > Cheers, > > Michael > > -------- Original Message -------- > Subject: [patch] add tcp congestion control relevant parts > Date: Wed, 12 Dec 2007 16:40:23 +0100 > From: Thomas Egerer <thomas.Egerer@xxxxxxxxxxx> > To: mtk.manpages@xxxxxxxxx > CC: linux-man@xxxxxxxxxxxxxxx > > Hello *, > > man-pages version : 2.70 from http://www.kernel.org/pub/linux/docs/man-pages/ > All required information were obtained by reading the kernel > code/documentation. > I'm not sure, whether it is completely bullet proof on when the sysctl > variables/socket option first appeared in the kernel, so you might as well > drop this information, but I'm pretty sure about how it works. > Here we go with my patch: > > diff -ru man-pages-2.70/man7/tcp.7 man-pages-2.70.new/man7/tcp.7 > --- man-pages-2.70/man7/tcp.7 2007-11-24 14:33:34.000000000 +0100 > +++ man-pages-2.70.new/man7/tcp.7 2007-12-12 16:34:52.000000000 +0100 > @@ -177,8 +177,6 @@ > .\" FIXME As at Sept 2006, kernel 2.6.18-rc5, the following are > .\" not yet documented (shown with default values): > .\" > -.\" /proc/sys/net/ipv4/tcp_congestion_control (since 2.6.13) > -.\" bic > .\" /proc/sys/net/ipv4/tcp_moderate_rcvbuf > .\" 1 > .\" /proc/sys/net/ipv4/tcp_no_metrics_save > @@ -224,6 +222,20 @@ > are reserved for the application buffer. > A value of 0 > implies that no amount is reserved. > +.TP > +.BR tcp_allowed_congestion_control \ > +" (String; default: cubic reno) (since 2.6.13) " > +Show/set the congestion control choices available to non-privileged > +processes. The list is a subset of those listed in > +.IR tcp_available_congestion_control "." > +Default is "cubic reno" and the default setting > +.RI ( tcp_congestion_control ). > +.TP > +.BR tcp_available_congestion_control \ > +" (String; default: cubic reno) (since 2.6.13) " > +Lists the TCP congestion control algorithms available on the system. This > value > +can only be changed by loading/unloading modules responsible for congestion > +control. > .\" > .\" The following is from 2.6.12: Documentation/networking/ip-sysctl.txt > .TP > @@ -257,6 +269,17 @@ > Allows two flows sharing the same connection to converge > more rapidly. > .TP > +.BR tcp_congestion_control " (String; default: cubic reno) (since 2.6.13) " > +Determines the congestion control algorithm used for newly created TCP > +sockets. By default Linux uses cubic with reno as fallback. If you want > +to have more control over the algorithm used, you must enable the symbol > +CONFIG_TCP_CONG_ADVANCED in your kernel config. You can choose the default congestion control as well as part of the kernel configuration. > -- Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
