LXR linux/drivers/net/ethernet/qlogic/qede/qede

   1/* QLogic qede NIC Driver
   2 * Copyright (c) 2015-2017  QLogic Corporation
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and /or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#ifndef _QEDE_PTP_H_
  33#define _QEDE_PTP_H_
  34
  35#include <linux/ptp_clock_kernel.h>
  36#include <linux/net_tstamp.h>
  37#include <linux/timecounter.h>
  38#include "qede.h"
  39
  40void qede_ptp_rx_ts(struct qede_dev *edev, struct sk_buff *skb);
  41void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb);
  42int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *req);
  43void qede_ptp_disable(struct qede_dev *edev);
  44int qede_ptp_enable(struct qede_dev *edev, bool init_tc);
  45int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *ts);
  46
  47static inline void qede_ptp_record_rx_ts(struct qede_dev *edev,
  48                                         union eth_rx_cqe *cqe,
  49                                         struct sk_buff *skb)
  50{
  51        /* Check if this packet was timestamped */
  52        if (unlikely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags) &
  53                     (1 << PARSING_AND_ERR_FLAGS_TIMESTAMPRECORDED_SHIFT))) {
  54                if (likely(le16_to_cpu(cqe->fast_path_regular.pars_flags.flags)
  55                    & (1 << PARSING_AND_ERR_FLAGS_TIMESYNCPKT_SHIFT))) {
  56                        qede_ptp_rx_ts(edev, skb);
  57                } else {
  58                        DP_INFO(edev,
  59                                "Timestamp recorded for non PTP packets\n");
  60                }
  61        }
  62}
  63#endif /* _QEDE_PTP_H_ */
  64