netdev - Re: [PATCH net-next 7/7] bnxt_en: Add PTP .getcrosststamp() interface to get device/host times

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <15501b84-2c35-466c-8347-c9ca406affb9@linux.dev>
Date: Tue, 2 Dec 2025 22:21:00 +0000
From: Vadim Fedorenko <vadim.fedorenko@...ux.dev>
To: Michael Chan <michael.chan@...adcom.com>, davem@...emloft.net
Cc: netdev@...r.kernel.org, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, andrew+netdev@...n.ch, pavan.chebbi@...adcom.com,
 andrew.gospodarek@...adcom.com, Somnath Kotur <somnath.kotur@...adcom.com>
Subject: Re: [PATCH net-next 7/7] bnxt_en: Add PTP .getcrosststamp() interface
 to get device/host times

On 26/11/2025 21:56, Michael Chan wrote:

[...]

> +static int bnxt_ptp_getcrosststamp(struct ptp_clock_info *ptp_info,
> +				   struct system_device_crosststamp *xtstamp)
> +{
> +	struct bnxt_ptp_cfg *ptp = container_of(ptp_info, struct bnxt_ptp_cfg,
> +						ptp_info);
> +
> +	if (!(ptp->bp->fw_cap & BNXT_FW_CAP_PTP_PTM))
> +		return -EOPNOTSUPP;

to have it enabled for x86-only (as the only supported platform as of
now), additional check is needed:

if (pcie_ptm_enabled(ptp->bp->pdev) && boot_cpu_has(X86_FEATURE_ART))
	return -EOPNOTSUPP;

> +	return get_device_system_crosststamp(bnxt_phc_get_syncdevicetime,
> +					     ptp, NULL, xtstamp);
> +}
> +