CVS commit: src

["Brian Buhrow" <buhrow%netbsd.org@localhost>]

Module Name:    src
Committed By:   buhrow
Date:           Wed Aug 27 17:58:10 UTC 2025

Modified Files:
        src/share/man/man4: xennet.4
        src/sys/arch/xen/xen: if_xennet_xenbus.c

Log Message:
Add the ability to control the minimum number of xnfrx buffers in the RX pool cache using the
sysctl(8) utility and the hw.xennet.xnfrx_lowat variable or the XENNET_XNFRX_LOWAT kernel
compile time option.
Also update the man page to document this change.

Testing shows a significant improvement in behavior when memory becomes tight on long-running
systems.


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/share/man/man4/xennet.4
cvs rdiff -u -r1.130 -r1.131 src/sys/arch/xen/xen/if_xennet_xenbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.