networkd: constify more things

1 files changed, 3 insertions, 3 deletions

diff --git a/src/network/networkd-route.h b/src/network/networkd-route.h
index ddc3e1da57..d4e4dbac0b 100644
--- a/src/network/networkd-route.h
+++ b/src/network/networkd-route.h
@@ -58,9 +58,9 @@ int route_configure(Route *route, Link *link, sd_netlink_message_handler_t callb
 int route_remove(Route *route, Link *link, sd_netlink_message_handler_t callback);
 
 int route_get(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, unsigned char table, Route **ret);
-int route_add(Link *link, int family, union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, unsigned char table, Route **ret);
-int route_add_foreign(Link *link, int family, union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, unsigned char table, Route **ret);
-int route_update(Route *route, union in_addr_union *src, unsigned char src_prefixlen, union in_addr_union *gw, union in_addr_union *prefsrc, unsigned char scope, unsigned char protocol);
+int route_add(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, unsigned char table, Route **ret);
+int route_add_foreign(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, unsigned char table, Route **ret);
+int route_update(Route *route, const union in_addr_union *src, unsigned char src_prefixlen, const union in_addr_union *gw, const union in_addr_union *prefsrc, unsigned char scope, unsigned char protocol);
 
 int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata);