net: pktgen: fix 'rate 0' error handling (return -EINVAL)

Given an invalid 'rate' command e.g. 'rate 0' the return value is '1',
leading to the following misleading output:

- the good case

	$ echo "rate 100" > /proc/net/pktgen/lo\@0
	$ grep "Result:" /proc/net/pktgen/lo\@0
	Result: OK: rate=100

- the bad case (before the patch)

	$ echo "rate 0" > /proc/net/pktgen/lo\@0"
	-bash: echo: write error: Invalid argument
	$ grep "Result:" /proc/net/pktgen/lo\@0
	Result: No such parameter "ate"

- with patch applied

	$ echo "rate 0" > /proc/net/pktgen/lo\@0
	-bash: echo: write error: Invalid argument
	$ grep "Result:" /proc/net/pktgen/lo\@0
	Result: Idle

Signed-off-by: Peter Seiderer <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

0 files changed, 0 insertions, 0 deletions