drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.h

   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__ */