• Willem de Bruijn's avatar
    net-timestamp: no-payload option · 49ca0d8b
    Willem de Bruijn authored
    Add timestamping option SOF_TIMESTAMPING_OPT_TSONLY. For transmit
    timestamps, this loops timestamps on top of empty packets.
    
    Doing so reduces the pressure on SO_RCVBUF. Payload inspection and
    cmsg reception (aside from timestamps) are no longer possible. This
    works together with a follow on patch that allows administrators to
    only allow tx timestamping if it does not loop payload or metadata.
    Signed-off-by: default avatarWillem de Bruijn <willemb@google.com>
    
    ----
    
    Changes (rfc -> v1)
      - add documentation
      - remove unnecessary skb->len test (thanks to Richard Cochran)
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    49ca0d8b
ip_sockglue.c 33.3 KB