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5c5416f5d4
It was a waste to clone skb directly in dsa_skb_tx_timestamp(). For one-step timestamping, a clone was not needed. For any failure of port_txtstamp (this may usually happen), the skb clone had to be freed. So this patch moves skb cloning for tx timestamp out of dsa core, and let drivers clone skb in port_txtstamp if they really need. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Tested-by: Kurt Kanzenbach <kurt@linutronix.de> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
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/*
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* DSA driver for:
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* Hirschmann Hellcreek TSN switch.
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*
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* Copyright (C) 2019,2020 Hochschule Offenburg
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* Copyright (C) 2019,2020 Linutronix GmbH
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* Authors: Kurt Kanzenbach <kurt@linutronix.de>
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* Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
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*/
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#ifndef _HELLCREEK_HWTSTAMP_H_
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#define _HELLCREEK_HWTSTAMP_H_
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#include <net/dsa.h>
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#include "hellcreek.h"
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/* Timestamp Register */
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#define PR_TS_RX_P1_STATUS_C (0x1d * 2)
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#define PR_TS_RX_P1_DATA_C (0x1e * 2)
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#define PR_TS_TX_P1_STATUS_C (0x1f * 2)
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#define PR_TS_TX_P1_DATA_C (0x20 * 2)
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#define PR_TS_RX_P2_STATUS_C (0x25 * 2)
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#define PR_TS_RX_P2_DATA_C (0x26 * 2)
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#define PR_TS_TX_P2_STATUS_C (0x27 * 2)
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#define PR_TS_TX_P2_DATA_C (0x28 * 2)
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#define PR_TS_STATUS_TS_AVAIL BIT(2)
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#define PR_TS_STATUS_TS_LOST BIT(3)
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#define SKB_PTP_TYPE(__skb) (*(unsigned int *)((__skb)->cb))
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/* TX_TSTAMP_TIMEOUT: This limits the time spent polling for a TX
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* timestamp. When working properly, hardware will produce a timestamp
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* within 1ms. Software may enounter delays, so the timeout is set
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* accordingly.
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*/
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#define TX_TSTAMP_TIMEOUT msecs_to_jiffies(40)
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int hellcreek_port_hwtstamp_set(struct dsa_switch *ds, int port,
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struct ifreq *ifr);
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int hellcreek_port_hwtstamp_get(struct dsa_switch *ds, int port,
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struct ifreq *ifr);
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bool hellcreek_port_rxtstamp(struct dsa_switch *ds, int port,
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struct sk_buff *clone, unsigned int type);
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void hellcreek_port_txtstamp(struct dsa_switch *ds, int port,
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struct sk_buff *skb);
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int hellcreek_get_ts_info(struct dsa_switch *ds, int port,
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struct ethtool_ts_info *info);
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long hellcreek_hwtstamp_work(struct ptp_clock_info *ptp);
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int hellcreek_hwtstamp_setup(struct hellcreek *chip);
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void hellcreek_hwtstamp_free(struct hellcreek *chip);
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#endif /* _HELLCREEK_HWTSTAMP_H_ */
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