drivers/net/ethernet/qlogic/qede/qede_ptp.h

   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
  40 void qede_ptp_rx_ts(struct qede_dev *edev, struct sk_buff *skb);
  41 void qede_ptp_tx_ts(struct qede_dev *edev, struct sk_buff *skb);
  42 int qede_ptp_hw_ts(struct qede_dev *edev, struct ifreq *req);
  43 void qede_ptp_disable(struct qede_dev *edev);
  44 int qede_ptp_enable(struct qede_dev *edev, bool init_tc);
  45 int qede_ptp_get_ts_info(struct qede_dev *edev, struct ethtool_ts_info *ts);
  46
  47 static 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_ */