1 /*
2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
3 *
4 * Copyright (c) 2003-2017 Chelsio Communications, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35 #ifndef __CXGB4_PTP_H__
36 #define __CXGB4_PTP_H__
37
38 /* Maximum parts-per-billion adjustment that is acceptable */
39 #define MAX_PTP_FREQ_ADJ 1000000
40 #define PTP_CLOCK_MAX_ADJTIME 10000000 /* 10 ms */
41
42 #define PTP_MIN_LENGTH 63
43 #define PTP_IN_TRANSMIT_PACKET_MAXNUM 240
44 #define PTP_EVENT_PORT 319
45
46 enum ptp_rx_filter_mode {
47 PTP_TS_NONE = 0,
48 PTP_TS_L2,
49 PTP_TS_L4,
50 PTP_TS_L2_L4
51 };
52
53 struct port_info;
54
55 static inline bool cxgb4_xmit_with_hwtstamp(struct sk_buff *skb)
56 {
57 return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP;
58 }
59
60 static inline void cxgb4_xmit_hwtstamp_pending(struct sk_buff *skb)
61 {
62 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
63 }
64
65 void cxgb4_ptp_init(struct adapter *adap);
66 void cxgb4_ptp_stop(struct adapter *adap);
67 bool cxgb4_ptp_is_ptp_tx(struct sk_buff *skb);
68 bool cxgb4_ptp_is_ptp_rx(struct sk_buff *skb);
69 int cxgb4_ptprx_timestamping(struct port_info *pi, u8 port, u16 mode);
70 int cxgb4_ptp_redirect_rx_packet(struct adapter *adap, struct port_info *pi);
71 int cxgb4_ptp_txtype(struct adapter *adap, u8 port_id);
72 void cxgb4_ptp_read_hwstamp(struct adapter *adap, struct port_info *pi);
73 bool is_ptp_enabled(struct sk_buff *skb, struct net_device *dev);
74 #endif /* __CXGB4_PTP_H__ */