RE: 2.2.x kernels missend odd-sized ICMP packets

Gregory Maxwell (linker@z.ml.org)
Fri, 9 Apr 1999 07:54:38 -0400 (EDT)

Can you all *PLEASE* report what cpu you have with these problems as well
as your compiler and what cpu you selected in kernel compliation?

It appears to be a checksumming problem, and Linux has asm optimizations
for packet checksumming, so perhaps there is a bug in one of the
checksumming routienes.. Davem?

FYI-

PPRO 2.2.3 compiled w/ GCC with PPRO as kernel cpu type: OK
CELERON 300A 2.2.5 compiled w/ GCC with PPRO as kernel CPU type: OK

On Fri, 9 Apr 1999, David B. Rees wrote:

> On 09-Apr-99 Joey Hess wrote:
> > I've noticed something exceedingly strange. 2.2.x kernels all seem to send
> > out odd sized ICMP packets improperly.
>
> No problems here on either of my egcs-1.1.2, kernel 2.2.5 machines:
>
> spoke:~> more /proc/version
> Linux version 2.2.5 (root@spoke.nols.com) (gcc version egcs-2.91.66 19990314 (eg
> cs-1.1.2 release)) #1 Mon Mar 29 01:13:49 PST 1999
> spoke:~> ./test.pl localhost
> packet size 1: 0% loss
> packet size 2: 0% loss
> packet size 3: 0% loss
> packet size 4: 0% loss
> packet size 5: 0% loss
> packet size 6: 0% loss
> packet size 7: 0% loss
> packet size 8: 0% loss
> packet size 9: 0% loss
> packet size 10: 0% loss
> packet size 11: 0% loss
> packet size 12: 0% loss
> packet size 13: 0% loss
> packet size 14: 0% loss
> packet size 15: 0% loss
> packet size 16: 0% loss
> packet size 17: 0% loss
> packet size 18: 0% loss
> packet size 19: 0% loss
> packet size 20: 0% loss
>
> -Dave
>
> -
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