Jason Xing wrote: > Support the ACK case for bpf timestamping. > > Add a new sock_ops callback, BPF_SOCK_OPS_TS_ACK_OPT_CB. This > callback will occur at the same timestamping point as the user > space's SCM_TSTAMP_ACK. The BPF program can use it to get the > same SCM_TSTAMP_ACK timestamp without modifying the user-space > application. > > This patch extends txstamp_ack to two bits: 1 stands for > SO_TIMESTAMPING mode, 2 bpf extension. > > Signed-off-by: Jason Xing <kerneljasonxing@xxxxxxxxx> Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>
