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_ */
64