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.h b/promisc.h
index b290b92..3dc275f 100644
--- a/promisc.h
+++ b/promisc.h
@@ -1,7 +1,7 @@
 #ifndef PROMISC_H
 #define PROMISC_H
 
-extern short enter_promiscuous_mode(char *ifname);
-extern void leave_promiscuous_mode(char *ifname, short oldflags);
+extern short enter_promiscuous_mode(const char *ifname);
+extern void leave_promiscuous_mode(const char *ifname, short oldflags);
 
 #endif /* PROMISC_H */