| 1 | /* |
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| 2 | * This file is part of the Chelsio T4 Ethernet driver for Linux. |
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| 3 | * |
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| 4 | * Copyright (c) 2003-2017 Chelsio Communications, Inc. All rights reserved. |
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| 5 | * |
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| 6 | * This software is available to you under a choice of one of two |
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| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
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| 8 | * General Public License (GPL) Version 2, available from the file |
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| 9 | * COPYING in the main directory of this source tree, or the |
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| 10 | * OpenIB.org BSD license below: |
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| 11 | * |
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| 12 | * Redistribution and use in source and binary forms, with or |
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| 13 | * without modification, are permitted provided that the following |
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| 14 | * conditions are met: |
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| 15 | * |
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| 16 | * - Redistributions of source code must retain the above |
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| 17 | * copyright notice, this list of conditions and the following |
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| 18 | * disclaimer. |
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| 19 | * |
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| 20 | * - Redistributions in binary form must reproduce the above |
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| 21 | * copyright notice, this list of conditions and the following |
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| 22 | * disclaimer in the documentation and/or other materials |
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| 23 | * provided with the distribution. |
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| 24 | * |
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| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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| 32 | * SOFTWARE. |
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| 33 | */ |
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| 34 | |
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| 35 | #ifndef __CXGB4_PTP_H__ |
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| 36 | #define __CXGB4_PTP_H__ |
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| 37 | |
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| 38 | /* Maximum parts-per-billion adjustment that is acceptable */ |
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| 39 | #define MAX_PTP_FREQ_ADJ 1000000 |
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| 40 | #define PTP_CLOCK_MAX_ADJTIME 10000000 /* 10 ms */ |
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| 41 | |
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| 42 | #define PTP_MIN_LENGTH 63 |
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| 43 | #define PTP_IN_TRANSMIT_PACKET_MAXNUM 240 |
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| 44 | #define PTP_EVENT_PORT 319 |
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| 45 | |
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| 46 | enum ptp_rx_filter_mode { |
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| 47 | PTP_TS_NONE = 0, |
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| 48 | PTP_TS_L2, |
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| 49 | PTP_TS_L4, |
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| 50 | PTP_TS_L2_L4 |
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| 51 | }; |
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| 52 | |
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| 53 | struct port_info; |
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| 54 | |
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| 55 | static inline bool cxgb4_xmit_with_hwtstamp(struct sk_buff *skb) |
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| 56 | { |
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| 57 | return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP; |
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| 58 | } |
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| 59 | |
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| 60 | static inline void cxgb4_xmit_hwtstamp_pending(struct sk_buff *skb) |
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| 61 | { |
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| 62 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
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| 63 | } |
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| 64 | |
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| 65 | void cxgb4_ptp_init(struct adapter *adap); |
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| 66 | void cxgb4_ptp_stop(struct adapter *adap); |
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| 67 | bool cxgb4_ptp_is_ptp_tx(struct sk_buff *skb); |
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| 68 | bool cxgb4_ptp_is_ptp_rx(struct sk_buff *skb); |
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| 69 | int cxgb4_ptprx_timestamping(struct port_info *pi, u8 port, u16 mode); |
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| 70 | int cxgb4_ptp_redirect_rx_packet(struct adapter *adap, struct port_info *pi); |
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| 71 | int cxgb4_ptp_txtype(struct adapter *adap, u8 port_id); |
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| 72 | void cxgb4_ptp_read_hwstamp(struct adapter *adap, struct port_info *pi); |
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| 73 | bool is_ptp_enabled(struct sk_buff *skb, struct net_device *dev); |
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| 74 | #endif /* __CXGB4_PTP_H__ */ |
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| 75 | |
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