cxgb4_ptprx_timestamping
cxgb4_ptprx_timestamping(pi, pi->port_id, PTP_TS_L4);
cxgb4_ptprx_timestamping(pi, pi->port_id, PTP_TS_L2_L4);
int cxgb4_ptprx_timestamping(struct port_info *pi, u8 port, u16 mode);