pktgen and tos
Subsystems (2)
Here's a half-arsed bug report, in case someone is bored.
At least in my hacked up pktgen, you cannot set a one-digit tos, because the parser fails if length is not 2 digits.
echo tos 4 > /proc/net/pktgen/rddVR2 && cat /proc/net/pktgen/rddVR2
...
Result: ERROR: tos must be 00-ff
If you use '04' instead, it works. In my case, it will be easier to hack user-space to deal with this than fix pktgen, but I thought someone might want to fix it proper.
Also, could be that upstream code doesn't have this limitation...
Thanks,
Ben
Signature · 2 lines
Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com
Quoted 10 lines · Ben Greear
Here's a half-arsed bug report, in case someone is bored.
At least in my hacked up pktgen, you cannot set a one-digit tos, because the parser fails if length is not 2 digits.
echo tos 4 >
/proc/net/pktgen/rddVR2&& cat/proc/net/pktgen/rddVR2...
Result: ERROR: tos must be 00-ff
Quoted 6 lines
If you use '04' instead, it works. In my case, it will be easier to hack user-space
to deal with this than fix pktgen, but I thought someone might want to fix it proper.Also, could be that upstream code doesn't have this limitation...
We need something like this:
net/core/pktgen.c +1 -1
@@ -1674,7 +1674,7 @@ static ssize_t pktgen_if_write(struct file *file,return len; i += len; -if (len ==2 ) { +if (len <=2 ) { pkt_dev->tos = tmp_value;sprintf (pg_result,"OK: tos=0x%02x" , pkt_dev->tos); }else {