Function cleanup_xaddrs_gateway

freebsd/net/rtsock.c:1351–1405

}

static int
cleanup_xaddrs_gateway(struct rt_addrinfo *info)
{
	struct sockaddr *gw = info->rti_info[RTAX_GATEWAY];

	if (info->rti_flags & RTF_LLDATA)
		return (cleanup_xaddrs_lladdr(info));

	switch (gw->sa_family) {
#ifdef INET
	case AF_INET:
		{
			struct sockaddr_in *gw_sin = (struct sockaddr_in *)gw;
			if (gw_sin->sin_len < sizeof(struct sockaddr_in)) {
				printf("gw sin_len too small\n");
				return (EINVAL);
			}
			fill_sockaddr_inet(gw_sin, gw_sin->sin_addr);
		}
		break;
#endif
#ifdef INET6
	case AF_INET6:
		{
			struct sockaddr_in6 *gw_sin6 = (struct sockaddr_in6 *)gw;
			if (gw_sin6->sin6_len < sizeof(struct sockaddr_in6)) {
				printf("gw sin6_len too small\n");
				return (EINVAL);
			}
			fill_sockaddr_inet6(gw_sin6, &gw_sin6->sin6_addr, 0);
			break;
		}
#endif
	case AF_LINK:
		{
			struct sockaddr_dl_short *gw_sdl;

			gw_sdl = (struct sockaddr_dl_short *)gw;
			if (gw_sdl->sdl_len < sizeof(struct sockaddr_dl_short)) {
				printf("gw sdl_len too small\n");
				return (EINVAL);
			}

			const struct sockaddr_dl_short sdl = {
				.sdl_family = AF_LINK,
				.sdl_len = sizeof(struct sockaddr_dl_short),
				.sdl_index = gw_sdl->sdl_index,
			};
			*gw_sdl = sdl;
			break;
		}
	}

	return (0);
}

static void
remove_netmask(struct rt_addrinfo *info)