netdev - Re: [PATCH net-next 05/12] ionic: add hw timestamp support files

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Date:   Mon, 5 Apr 2021 09:19:42 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     Richard Cochran <richardcochran@...il.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        drivers@...sando.io, Allen Hubbe <allenbh@...sando.io>
Subject: Re: [PATCH net-next 05/12] ionic: add hw timestamp support files

On 4/4/21 4:21 PM, Richard Cochran wrote:
> On Thu, Apr 01, 2021 at 10:56:03AM -0700, Shannon Nelson wrote:
>
>> +int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr)
>> +{
>> +	struct ionic *ionic = lif->ionic;
>> +	struct hwtstamp_config config;
>> +	int tx_mode = 0;
>> +	u64 rx_filt = 0;
>> +	int err, err2;
>> +	bool rx_all;
>> +	__le64 mask;
>> +
>> +	if (!lif->phc || !lif->phc->ptp)
>> +		return -EOPNOTSUPP;
>> +
>> +	if (ifr) {
>> +		if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
>> +			return -EFAULT;
>> +	} else {
>> +		/* if called with ifr == NULL, behave as if called with the
>> +		 * current ts_config from the initial cleared state.
>> +		 */
>> +		memcpy(&config, &lif->phc->ts_config, sizeof(config));
>> +		memset(&lif->phc->ts_config, 0, sizeof(config));
>> +	}
>> +
>> +	tx_mode = ionic_hwstamp_tx_mode(config.tx_type);
>> +	if (tx_mode < 0)
>> +		return tx_mode;
>> +
>> +	mask = cpu_to_le64(BIT_ULL(tx_mode));
>> +	if ((ionic->ident.lif.eth.hwstamp_tx_modes & mask) != mask)
>> +		return -ERANGE;
>> +
>> +	rx_filt = ionic_hwstamp_rx_filt(config.rx_filter);
>> +	rx_all = config.rx_filter != HWTSTAMP_FILTER_NONE && !rx_filt;
>> +
>> +	mask = cpu_to_le64(rx_filt);
>> +	if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) != mask) {
>> +		rx_filt = 0;
>> +		rx_all = true;
>> +		config.rx_filter = HWTSTAMP_FILTER_ALL;
>> +	}
>> +
>> +	dev_dbg(ionic->dev, "config_rx_filter %d rx_filt %#llx rx_all %d\n",
>> +		config.rx_filter, rx_filt, rx_all);
>> +
>> +	mutex_lock(&lif->phc->config_lock);
>> +
>> +	if (tx_mode) {
>> +		err = ionic_lif_create_hwstamp_txq(lif);
> This function NDE yet.  It first appears in Patch #6.  Please make
> sure each patch compiles.  That way, bisection always works.
>
> Thanks,
> Richard

This patch simply gets the file into the repo, it isn't yet mentioned in 
the Makefile so there is no broken compile.  This was just as a way of 
making patch 6 a little smaller.

sln