CVS commit: src/sys/rump/net/lib/libshmif

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Thu Feb 20 08:06:15 UTC 2020

Modified Files:
        src/sys/rump/net/lib/libshmif: if_shmem.c

Log Message:
shmif: use cprng_strong32 to generate random bytes for a MAC address

cprng_fast32 sometimes returns indentical bytes, which look
"20:0e:11:33" in a MAC address, on different rump_server instances.
That leads MAC address duplications resulting in a test failure.

Fix it by using cprng_strong32 instead of cprng_fast32.  However
we should rather fix cprng_fast32 (or rump itself) somehow.

The fix mitigates PR kern/54897 but test failures due to other
causes still remain.


To generate a diff of this commit:
cvs rdiff -u -r1.77 -r1.78 src/sys/rump/net/lib/libshmif/if_shmem.c

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