404     int sockopt_val = 0;  in dgram_ctrl()  local
466             sockopt_val = IP_PMTUDISC_DO;  in dgram_ctrl()
468                                   &sockopt_val, sizeof(sockopt_val))) < 0)  in dgram_ctrl()
473             sockopt_val = IPV6_PMTUDISC_DO;  in dgram_ctrl()
475                                   &sockopt_val, sizeof(sockopt_val))) < 0)  in dgram_ctrl()
495         sockopt_len = sizeof(sockopt_val);  in dgram_ctrl()
499                  getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val,  in dgram_ctrl()
500                             &sockopt_len)) < 0 || sockopt_val < 0) {  in dgram_ctrl()
507                 data->mtu = sockopt_val - 8 - 20;  in dgram_ctrl()
515                             (void *)&sockopt_val, &sockopt_len)) < 0  in dgram_ctrl()
516                 || sockopt_val < 0) {  in dgram_ctrl()
523                 data->mtu = sockopt_val - 8 - 40;  in dgram_ctrl()
728         sockopt_val = num ? 1 : 0;  in dgram_ctrl()
734                                   &sockopt_val, sizeof(sockopt_val))) < 0) {  in dgram_ctrl()
739             if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),  in dgram_ctrl()
741                                   &sockopt_val, sizeof(sockopt_val))) < 0) {  in dgram_ctrl()
747                                   (const char *)&sockopt_val,  in dgram_ctrl()
748                                   sizeof(sockopt_val))) < 0) {  in dgram_ctrl()
760                                   (const void *)&sockopt_val,  in dgram_ctrl()
761                                   sizeof(sockopt_val))) < 0) {  in dgram_ctrl()
766             if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT),  in dgram_ctrl()
768                                   &sockopt_val, sizeof(sockopt_val))) < 0) {  in dgram_ctrl()