Bug 157453
| Summary: | [patch] document 16-fib cap in setfib.2 | ||||||
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| Product: | Documentation | Reporter: | Ben Kaduk <kaduk> | ||||
| Component: | Books & Articles | Assignee: | Benjamin Kaduk <bjk> | ||||
| Status: | Closed FIXED | ||||||
| Severity: | Affects Only Me | ||||||
| Priority: | Normal | ||||||
| Version: | Latest | ||||||
| Hardware: | Any | ||||||
| OS: | Any | ||||||
| Attachments: |
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Description
Ben Kaduk
2011-05-31 06:00:22 UTC
---------- Forwarded message ---------- Date: Tue, 07 Jun 2011 15:55:44 -0700 From: Julian Elischer <julian@freebsd.org> To: Benjamin Kaduk <kaduk@mit.edu> Subject: Re: [maybe spam] Re: svn commit: r222702 - head/sys/sys On 6/6/11 10:52 AM, Benjamin Kaduk wrote: >> On 6/5/11 4:20 AM, Julian Elischer wrote: >> >> hmm note that my stealing of 4 bits for FIB was supposed to go away >> for 8 and beyond. > > Hmm, perhaps my patch to setfib.2 in > http://www.freebsd.org/cgi/query-pr.cgi?pr=docs/157453 is not quite right, > then. Do you have any comments on it? looks good.. may add "this restriction will eventually be lifted" > > Thanks, > > Ben Kaduk > >> We need to do an mbuf redesign.. at this stage, I guess it's a project for >> 10. > Responsible Changed From-To: freebsd-doc->bjk This one has come full-circle. Author: bjk (doc committer) Date: Mon Mar 19 04:46:11 2012 New Revision: 233160 URL: http://svn.freebsd.org/changeset/base/233160 Log: Expound a bit more about the system maximum number of FIBs, how it may be set, and current limitations on the value. Approved by: hrs (mentor) PR: docs/157453 MFC after: 1 week Modified: head/lib/libc/sys/setfib.2 Modified: head/lib/libc/sys/setfib.2 ============================================================================== --- head/lib/libc/sys/setfib.2 Mon Mar 19 03:27:08 2012 (r233159) +++ head/lib/libc/sys/setfib.2 Mon Mar 19 04:46:11 2012 (r233160) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 8, 2008 +.Dd March 19, 2012 .Dt SETFIB 2 .Os .Sh NAME @@ -45,10 +45,28 @@ subsequent to the call, to be that of th The .Fa fib argument -may be between 0 and the current system maximum which +must be greater than or equal to 0 +and less than the current system maximum which may be retrieved by the .Va net.fibs sysctl. +The system maximum is set in the kernel configuration file with +.Pp +.Dl options ROUTETABLES= Ns Em N +.Pp +or in +.Pa /boot/loader.conf +with +.Pp +.Dl net.fibs= Ns Qq Em N +.Pp +where +.Em N +is an integer. +However, this maximum is capped at 16 due to the implementation storing +the fib number in a 4-bit field in +.Xr mbuf 9 +flags. The default fib of the process will be applied to all protocol families that support multiple fibs, and ignored by those that do not. The default fib for a process may be overridden for a socket with the use _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org" State Changed From-To: open->patched r233160 in HEAD; MFC in one week Author: bjk (doc committer) Date: Tue Apr 24 03:27:27 2012 New Revision: 234628 URL: http://svn.freebsd.org/changeset/base/234628 Log: MFC r233160: Expound a bit more about the system maximum number of FIBs, how it may be set, and current limitations on the value. PR: docs/157453 Approved by: hrs (mentor) Modified: stable/9/lib/libc/sys/setfib.2 Directory Properties: stable/9/lib/libc/ (props changed) stable/9/lib/libc/sys/ (props changed) Modified: stable/9/lib/libc/sys/setfib.2 ============================================================================== --- stable/9/lib/libc/sys/setfib.2 Tue Apr 24 01:12:43 2012 (r234627) +++ stable/9/lib/libc/sys/setfib.2 Tue Apr 24 03:27:27 2012 (r234628) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 8, 2008 +.Dd March 19, 2012 .Dt SETFIB 2 .Os .Sh NAME @@ -45,10 +45,28 @@ subsequent to the call, to be that of th The .Fa fib argument -may be between 0 and the current system maximum which +must be greater than or equal to 0 +and less than the current system maximum which may be retrieved by the .Va net.fibs sysctl. +The system maximum is set in the kernel configuration file with +.Pp +.Dl options ROUTETABLES= Ns Em N +.Pp +or in +.Pa /boot/loader.conf +with +.Pp +.Dl net.fibs= Ns Qq Em N +.Pp +where +.Em N +is an integer. +However, this maximum is capped at 16 due to the implementation storing +the fib number in a 4-bit field in +.Xr mbuf 9 +flags. The default fib of the process will be applied to all protocol families that support multiple fibs, and ignored by those that do not. The default fib for a process may be overridden for a socket with the use _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org" Author: bjk (doc committer) Date: Tue Apr 24 03:29:10 2012 New Revision: 234629 URL: http://svn.freebsd.org/changeset/base/234629 Log: MFC r233160: Expound a bit more about the system maximum number of FIBs, how it may be set, and current limitations on the value. PR: docs/157453 Approved by: hrs (mentor) Modified: stable/8/lib/libc/sys/setfib.2 Directory Properties: stable/8/lib/libc/ (props changed) stable/8/lib/libc/sys/ (props changed) Modified: stable/8/lib/libc/sys/setfib.2 ============================================================================== --- stable/8/lib/libc/sys/setfib.2 Tue Apr 24 03:27:27 2012 (r234628) +++ stable/8/lib/libc/sys/setfib.2 Tue Apr 24 03:29:10 2012 (r234629) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 8, 2008 +.Dd March 19, 2012 .Dt SETFIB 2 .Os .Sh NAME @@ -45,10 +45,28 @@ subsequent to the call, to be that of th The .Fa fib argument -may be between 0 and the current system maximum which +must be greater than or equal to 0 +and less than the current system maximum which may be retrieved by the .Va net.fibs sysctl. +The system maximum is set in the kernel configuration file with +.Pp +.Dl options ROUTETABLES= Ns Em N +.Pp +or in +.Pa /boot/loader.conf +with +.Pp +.Dl net.fibs= Ns Qq Em N +.Pp +where +.Em N +is an integer. +However, this maximum is capped at 16 due to the implementation storing +the fib number in a 4-bit field in +.Xr mbuf 9 +flags. The default fib of the process will be applied to all protocol families that support multiple fibs, and ignored by those that do not. The default fib for a process may be overridden for a socket with the use _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org" Author: bjk (doc committer) Date: Tue Apr 24 03:30:26 2012 New Revision: 234630 URL: http://svn.freebsd.org/changeset/base/234630 Log: MFC r233160: Expound a bit more about the system maximum number of FIBs, how it may be set, and current limitations on the value. PR: docs/157453 Approved by: hrs (mentor) Modified: stable/7/lib/libc/sys/setfib.2 Directory Properties: stable/7/lib/libc/ (props changed) Modified: stable/7/lib/libc/sys/setfib.2 ============================================================================== --- stable/7/lib/libc/sys/setfib.2 Tue Apr 24 03:29:10 2012 (r234629) +++ stable/7/lib/libc/sys/setfib.2 Tue Apr 24 03:30:26 2012 (r234630) @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd May 9, 2008 +.Dd March 19, 2012 .Dt SETFIB 2 .Os .Sh NAME @@ -44,10 +44,28 @@ subsequent to the call, to be that of th The .Fa fib argument -may be between 0 and the current system maximum which +must be greater than or equal to 0 +and less than the current system maximum which may be retrieved by the .Em net.fibs sysctl. +The system maximum is set in the kernel configuration file with +.Pp +.Dl options ROUTETABLES= Ns Em N +.Pp +or in +.Pa /boot/loader.conf +with +.Pp +.Dl net.fibs= Ns Qq Em N +.Pp +where +.Em N +is an integer. +However, this maximum is capped at 16 due to the implementation storing +the fib number in a 4-bit field in +.Xr mbuf 9 +flags. The default fib of the process will be applied to all protocol families that support multiple fibs, and ignored by those that do not. The default fib for a process may be overidden for a socket with the use _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org" State Changed From-To: patched->closed Merged to 7, 8, and 9. |
