Date: Fri, 7 Feb 2025 14:46:59 GMT From: Mark Johnston <markj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 028323d61649 - stable/14 - setfib.2: Note that the number of FIBs can be adjusted after boot Message-ID: <202502071446.517EkxN5002738@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch stable/14 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=028323d616496e6244934917975835f326f82b00 commit 028323d616496e6244934917975835f326f82b00 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2025-01-21 15:39:50 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2025-02-07 14:46:53 +0000 setfib.2: Note that the number of FIBs can be adjusted after boot Reviewed by: zlei, imp MFC after: 2 weeks Sponsored by: Klara, Inc. Sponsored by: Stormshield Differential Revision: https://reviews.freebsd.org/D48545 (cherry picked from commit 010ee8215f5c899e23250828402af5b7bb354328) --- lib/libc/sys/setfib.2 | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/lib/libc/sys/setfib.2 b/lib/libc/sys/setfib.2 index 32e2f64910cb..57e83c0d1adb 100644 --- a/lib/libc/sys/setfib.2 +++ b/lib/libc/sys/setfib.2 @@ -22,7 +22,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd March 19, 2012 +.Dd January 10, 2025 .Dt SETFIB 2 .Os .Sh NAME @@ -55,15 +55,20 @@ The system maximum is set in the kernel configuration file with .Pp or in .Pa /boot/loader.conf +or +.Pa /etc/sysctl.conf with .Pp .Dl net.fibs= Ns Qq Em N .Pp where .Em N -is an integer. -This maximum is capped at 65536 due to the implementation storing -the fib number in a 16-bit field in the +is an integer smaller than 65536. +Note that the number of FIBs may be increased after booting, but cannot be +reduced. +.Pp +The maximum of 65536 is due to the implementation storing +the FIB number in a 16-bit field in the .Xr mbuf 9 packet header, however it is not suggested that one use such a large number as memory is allocated for every FIB regardless of whether it is used, and
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202502071446.517EkxN5002738>