1313         int af;  in socket_get_family()  local
1314         socklen_t sl = sizeof(af);  in socket_get_family()
1316         if (getsockopt(fd, SOL_SOCKET, SO_DOMAIN, &af, &sl) < 0)  in socket_get_family()
1319         if (sl != sizeof(af))  in socket_get_family()
1322         return af;  in socket_get_family()
1325 int socket_set_recvpktinfo(int fd, int af, bool b) {  in socket_set_recvpktinfo()  argument
1328         if (af == AF_UNSPEC) {  in socket_set_recvpktinfo()
1329                 r = socket_get_family(fd, &af);  in socket_set_recvpktinfo()
1334         switch (af) {  in socket_set_recvpktinfo()
1353 int socket_set_unicast_if(int fd, int af, int ifi) {  in socket_set_unicast_if()  argument
1357         if (af == AF_UNSPEC) {  in socket_set_unicast_if()
1358                 r = socket_get_family(fd, &af);  in socket_set_unicast_if()
1363         switch (af) {  in socket_set_unicast_if()
1376 int socket_set_option(int fd, int af, int opt_ipv4, int opt_ipv6, int val) {  in socket_set_option()  argument
1379         if (af == AF_UNSPEC) {  in socket_set_option()
1380                 r = socket_get_family(fd, &af);  in socket_set_option()
1385         switch (af) {  in socket_set_option()
1398 int socket_get_mtu(int fd, int af, size_t *ret) {  in socket_get_mtu()  argument
1401         if (af == AF_UNSPEC) {  in socket_get_mtu()
1402                 r = socket_get_family(fd, &af);  in socket_get_mtu()
1407         switch (af) {  in socket_get_mtu()