packet_sock_flag_set
packet_sock_flag_set(po, PACKET_SOCK_PRESSURE, pressure);
packet_sock_flag_set(po, PACKET_SOCK_PRESSURE, false);
packet_sock_flag_set(po, PACKET_SOCK_RUNNING, 1);
packet_sock_flag_set(po, PACKET_SOCK_RUNNING, 0);
packet_sock_flag_set(po, PACKET_SOCK_TP_LOSS, val);
packet_sock_flag_set(po, PACKET_SOCK_AUXDATA, val);
packet_sock_flag_set(po, PACKET_SOCK_ORIGDEV, val);
packet_sock_flag_set(po, PACKET_SOCK_TX_HAS_OFF, val);
packet_sock_flag_set(po, PACKET_SOCK_QDISC_BYPASS, val);