promisc: Constify `ifname' parameters to {enter,leave}_promiscuous_mode()

The parameter `ifname' to {enter,leave}_promiscuous_mode() is never
modified inside the functions, thus mark it as const.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/promisc.c b/promisc.c
index 32184b1..56f6e4b 100644
--- a/promisc.c
+++ b/promisc.c
@@ -5,7 +5,7 @@
 #include "promisc.h"
 #include "dev.h"
 
-short enter_promiscuous_mode(char *ifname)
+short enter_promiscuous_mode(const char *ifname)
 {
 	short ifflags;
 
@@ -18,7 +18,7 @@ short enter_promiscuous_mode(char *ifname)
 	return ifflags;
 }
 
-void leave_promiscuous_mode(char *ifname, short oldflags)
+void leave_promiscuous_mode(const char *ifname, short oldflags)
 {
 	if (!strncmp("any", ifname, strlen("any")))
 		return;