iflib: Plumb per-packet RX hardware timestamps to mbufsHEADmain

Add iri_rcv_tstmp to if_rxd_info so an isc_rxd_pkt_get() driver can
report a hardware RX timestamp.  Copy it into m_pkthdr.rcv_tstmp,
reusing the generic mbuf timestamp path.

Widen iri_flags from uint8_t to uint32_t and define the flags drivers
may supply.  Mask the flags before copying them into the mbuf so no
other mbuf state can leak through the driver callback.

Place the timestamp next to iri_frags to avoid an alignment hole, and
document its nanoseconds-since-boot representation and validity flags.
Bump __FreeBSD_version because changing if_rxd_info breaks KBI.

Reviewed by:	gallatin
Signed-off-by:	Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Differential Revision:	https://reviews.freebsd.org/D58638

0 files changed, 0 insertions, 0 deletions