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__ */ 75