lib: make match functions take const args
* table.c: general type safety and compiler help:
* maskbit[]: become const
* route_node_match(): take const args
* route_node_match_ipv4(): idem
* route_node_match_ipv6(): idem
* check_bit(): idem, plus adjust local vars typing
diff --git a/lib/table.c b/lib/table.c
index 70fc0b2..06c6453 100644
--- a/lib/table.c
+++ b/lib/table.c
@@ -125,7 +125,7 @@
}
/* Utility mask array. */
-static u_char maskbit[] =
+static const u_char maskbit[] =
{
0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff
};
@@ -170,11 +170,11 @@
/* Check bit of the prefix. */
static int
-check_bit (u_char *prefix, u_char prefixlen)
+check_bit (const u_char *prefix, u_char prefixlen)
{
- int offset;
- int shift;
- u_char *p = (u_char *)prefix;
+ unsigned int offset;
+ unsigned int shift;
+ const u_char *p = prefix;
assert (prefixlen <= 128);
@@ -221,7 +221,7 @@
/* Find matched prefix. */
struct route_node *
-route_node_match (struct route_table *table, struct prefix *p)
+route_node_match (const struct route_table *table, const struct prefix *p)
{
struct route_node *node;
struct route_node *matched;
@@ -247,7 +247,8 @@
}
struct route_node *
-route_node_match_ipv4 (struct route_table *table, struct in_addr *addr)
+route_node_match_ipv4 (const struct route_table *table,
+ const struct in_addr *addr)
{
struct prefix_ipv4 p;
@@ -261,7 +262,8 @@
#ifdef HAVE_IPV6
struct route_node *
-route_node_match_ipv6 (struct route_table *table, struct in6_addr *addr)
+route_node_match_ipv6 (const struct route_table *table,
+ const struct in6_addr *addr)
{
struct prefix_ipv6 p;