lib: hashing functions should take const arguments

It doesn't make much sense for a hash function to modify its argument,
so const the hash input.

BGP does it in a couple places, those cast away the const. Not great but
not any worse than it was.

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/vrf.c b/lib/vrf.c
index 6ec3cc8e0d..229f19f29a 100644
--- a/lib/vrf.c
+++ b/lib/vrf.c
@@ -362,9 +362,9 @@ struct vrf_bit_set {
 	bool set;
 };
 
-static unsigned int vrf_hash_bitmap_key(void *data)
+static unsigned int vrf_hash_bitmap_key(const void *data)
 {
-	struct vrf_bit_set *bit = data;
+	const struct vrf_bit_set *bit = data;
 
 	return bit->vrf_id;
 }