networkd: monopolize in_addr utility functions in shared/in-addr-util.h

Primarily, this means we get rid of net_parse_inaddr(), and replace it
everywhere with in_addr_from_string() and in_addr_from_string_auto().
These functions do not clobber the callers arguments on failure, which
is more close to our usual coding style.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/shared/in-addr-util.c b/src/shared/in-addr-util.c
index 459f846173..457eedd6d8 100644
--- a/src/shared/in-addr-util.c
+++ b/src/shared/in-addr-util.c
@@ -242,3 +242,9 @@ int in_addr_from_string_auto(const char *s, int *family, union in_addr_union *re
 
         return -EINVAL;
 }
+
+unsigned in_addr_netmask_to_prefixlen(const struct in_addr *addr) {
+        assert(addr);
+
+        return 32 - u32ctz(be32toh(addr->s_addr));
+}