netdev - [PATCH v1 net-next 0/6] Extend socket timestamping API

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Message-Id: <20170426145035.25846-1-mlichvar@redhat.com>
Date:   Wed, 26 Apr 2017 16:50:29 +0200
From:   Miroslav Lichvar <mlichvar@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Richard Cochran <richardcochran@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>,
        "Keller, Jacob E" <jacob.e.keller@...el.com>,
        Denny Page <dennypage@...com>, Jiri Benc <jbenc@...hat.com>
Subject: [PATCH v1 net-next 0/6] Extend socket timestamping API

Changes RFC->v1:
- reworked SOF_TIMESTAMPING_OPT_PKTINFO patch to not add new fields to
  skb shared info (net device is now looked up by napi_id), not require
  any changes in drivers, and restrict the cmsg to incoming packets
- renamed SOF_TIMESTAMPING_OPT_MULTIMSG to SOF_TIMESTAMPING_OPT_TX_SWHW
  and fixed its description
- moved struct scm_ts_pktinfo from errqueue.h to net_tstamp.h as it
  can't be received from the error queue anymore
- improved commit descriptions and removed incorrect comment

This patchset adds new options to the timestamping API that will be
useful for NTP implementations and possibly other applications.

The first patch specifies a timestamp filter for NTP packets. The second
patch updates drivers that can timestamp all packets, or need to list
the filter as unsupported. There is no attempt to add the support to the
phyter driver.

The third patch adds a new option to get a new control message with the
L2 length and interface index for incoming packets with hardware
timestamps.

The fourth patch fixes the code to not make a false software TX
timestamp when hardware timestamping is enabled. The fifth patch depends
on this fix.

The fifth patch adds a new option to request both software and hardware
timestamps for outgoing packets. The sixth patch updates drivers that
assumed software timestamping cannot be used together with hardware
timestamping.

The patches have been tested on x86_64 machines with igb and e1000e
drivers.

Miroslav Lichvar (6):
  net: define receive timestamp filter for NTP
  net: ethernet: update drivers to handle HWTSTAMP_FILTER_NTP_ALL
  net: add new control message for incoming HW-timestamped packets
  net: don't make false software transmit timestamps
  net: allow simultaneous SW and HW transmit timestamping
  net: ethernet: update drivers to make both SW and HW TX timestamps

 Documentation/networking/timestamping.txt          | 22 ++++++++++++++--
 drivers/net/ethernet/amd/xgbe/xgbe-drv.c           |  4 +--
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c   |  1 +
 drivers/net/ethernet/cavium/liquidio/lio_main.c    |  1 +
 drivers/net/ethernet/cavium/liquidio/lio_vf_main.c |  1 +
 drivers/net/ethernet/cavium/octeon/octeon_mgmt.c   |  1 +
 drivers/net/ethernet/intel/e1000e/netdev.c         |  5 ++--
 drivers/net/ethernet/intel/i40e/i40e_ptp.c         |  1 +
 drivers/net/ethernet/intel/igb/igb_ptp.c           |  1 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c       |  1 +
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c     |  1 +
 drivers/net/ethernet/mellanox/mlx5/core/en_clock.c |  1 +
 drivers/net/ethernet/neterion/vxge/vxge-main.c     |  1 +
 drivers/net/ethernet/qlogic/qede/qede_ptp.c        |  1 +
 drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c    |  3 +--
 drivers/net/ethernet/sfc/ef10.c                    |  1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |  7 +++--
 drivers/net/ethernet/ti/cpsw.c                     |  1 +
 drivers/net/ethernet/tile/tilegx.c                 |  1 +
 include/linux/netdevice.h                          |  1 +
 include/linux/skbuff.h                             |  3 +--
 include/uapi/asm-generic/socket.h                  |  2 ++
 include/uapi/linux/net_tstamp.h                    | 13 +++++++++-
 net/core/dev.c                                     | 18 +++++++++++++
 net/core/dev_ioctl.c                               |  1 +
 net/core/skbuff.c                                  |  4 +++
 net/socket.c                                       | 30 ++++++++++++++++++++--
 27 files changed, 110 insertions(+), 17 deletions(-)

-- 
2.9.3