On Wed, Apr 12, 2017 at 10:17 AM, Miroslav Lichvar <mlich...@redhat.com> wrote: > Extend the skb_shared_hwtstamps structure with the index of the > real interface which received or transmitted the packet and the length > of the packet at layer 2.
The original packet is received along with the timestamp. Why is this L2 length needed? > Add a SOF_TIMESTAMPING_OPT_PKTINFO flag to > the SO_TIMESTAMPING option to allow applications to get this information > as struct scm_ts_pktinfo in SCM_TIMESTAMPING_PKTINFO control message. This patch saves skb->dev->ifindex, which is the same as existing SOF_TIMESTAMPING_OPT_CMSG. See also the bug fix for that feature I sent yesterday: http://patchwork.ozlabs.org/patch/750197/ If the intent is to return a different ifindex, I would still suggest using the existing pktinfo infrastructure, but changing the ifindex that is recorded.
