Commit 40207264 authored May 21, 2015 by Jesper Dangaard Brouer Committed by David S. Miller May 22, 2015

pktgen: make /proc/net/pktgen/pgctrl report fail on invalid input



Giving /proc/net/pktgen/pgctrl an invalid command just returns shell
success and prints a warning in dmesg.  This is not very useful for
shell scripting, as it can only detect the error by parsing dmesg.

Instead return -EINVAL when the command is unknown, as this provides
userspace shell scripting a way of detecting this.

Also bump version tag to 2.75, because (1) reading /proc/net/pktgen/pgctrl
output this version number which would allow to detect this small
semantic change, and (2) because the pktgen version tag have not been
updated since 2010.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2a1ddf27

net/core/pktgen.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -177,7 +177,7 @@
		#include <asm/dma.h>
		#include <asm/div64.h> /* do_div */

		#define VERSION "2.74"
		#define VERSION "2.75"
		#define IP_NAME_SZ 32
		#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
		#define MPLS_STACK_BOTTOM htonl(0x00000100)
		@@ -512,7 +512,7 @@ static ssize_t pgctrl_write(struct file file, const char __user buf,
		pktgen_reset_all_threads(pn);

		else
		pr_warn("Unknown command: %s\n", data);
		return -EINVAL;

		return count;
		}