LXR linux/drivers/net/ethernet/chelsio/cxgb4/cxgb4

   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
  46enum ptp_rx_filter_mode {
  47        PTP_TS_NONE = 0,
  48        PTP_TS_L2,
  49        PTP_TS_L4,
  50        PTP_TS_L2_L4
  51};
  52
  53struct port_info;
  54
  55static inline bool cxgb4_xmit_with_hwtstamp(struct sk_buff *skb)
  56{
  57        return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP;
  58}
  59
  60static inline void cxgb4_xmit_hwtstamp_pending(struct sk_buff *skb)
  61{
  62        skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
  63}
  64
  65void cxgb4_ptp_init(struct adapter *adap);
  66void cxgb4_ptp_stop(struct adapter *adap);
  67bool cxgb4_ptp_is_ptp_tx(struct sk_buff *skb);
  68bool cxgb4_ptp_is_ptp_rx(struct sk_buff *skb);
  69int cxgb4_ptprx_timestamping(struct port_info *pi, u8 port, u16 mode);
  70int cxgb4_ptp_redirect_rx_packet(struct adapter *adap, struct port_info *pi);
  71int cxgb4_ptp_txtype(struct adapter *adap, u8 port_id);
  72void cxgb4_ptp_read_hwstamp(struct adapter *adap, struct port_info *pi);
  73bool is_ptp_enabled(struct sk_buff *skb, struct net_device *dev);
  74#endif /* __CXGB4_PTP_H__ */
  75