Re: [PATCH net-next v7 08/15] net: ethernet: oa_tc6: Support for hardware timestamp
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From: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Date: 2026-07-09 10:45:27
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On 08/07/2026 18:12, Selvamani Rajagopal via B4 Relay wrote:
From: Selvamani Rajagopal <redacted>
PTP register/unregister calls are implemented in oa_tc6_ptp.c.
The APIs that work with the hardware for timestamp is provided
by vendor code as it may be vendor dependent.
Interface for ndo_hwtstamp_set/get, ioctl, control and status
callback for ethtool are provided to support hardware timestamp
feature.
Besides ioctl interface, hardware timestamp functions that handles
header and footer data are in oa_tc6.c. Helper functions are in
oa_tc6_tstamp.c.
Signed-off-by: Selvamani Rajagopal <redacted>
---
changes in v7
- Fixed the parameter name mismatch in function protoype and
definition
- CONFIG0 is set with 64 bit timestamp support by default.
- Added information about return value for API documentation.
changes in v6
- Fixed the issue of function parameter in oa_tc6_get_ts_stats
not described in comments section for documentation.
- Avoided typecasting __be32 as u32
changes in v5
- As subtracting skb len by FCS size is considered bug, changes
are removed. Will be fixed in stable branch (net repo)
changes in v4
- Fixed the condition check for subtracting the FCS size
from skb len.
changes in v3
- Replaced warning printk with ratelimited printk
- Checking the hardware register before enabling hardware
timestamp
changes in v1
- Added hardware timestamp support to the OA TC6 framework.
---
MAINTAINERS | 1 +
drivers/net/ethernet/oa_tc6/Makefile | 2 +-
drivers/net/ethernet/oa_tc6/oa_tc6.c | 218 +++++++++++++++++++++++++--
drivers/net/ethernet/oa_tc6/oa_tc6_ptp.c | 70 +++++++++
drivers/net/ethernet/oa_tc6/oa_tc6_std_def.h | 34 +++++
drivers/net/ethernet/oa_tc6/oa_tc6_tstamp.c | 205 +++++++++++++++++++++++++
include/linux/oa_tc6.h | 12 ++
7 files changed, 527 insertions(+), 15 deletions(-)[...]
quoted hunk ↗ jump to hunk
+/** + * oa_tc6_ioctl - generic ioctl interface for MAC-PHY drivers. + * @tc6: oa_tc6 struct. + * @rq: request from socket interface + * @cmd: value to set/get timestamp configuration + * + * Return: 0 on success otherwise failed. + */ +int oa_tc6_ioctl(struct oa_tc6 *tc6, struct ifreq *rq, int cmd) +{ + if (!netif_running(tc6->netdev)) + return -EINVAL; + + if (cmd == SIOCSHWTSTAMP || cmd == SIOCGHWTSTAMP) + return oa_tc6_tstamp_ioctl(tc6, rq, cmd);
ioctl interface for HW timestamp configuration is deprecated, kernel code was recently cleaned up to aviod these ioctl commands in favor of ndo_hwtstamp_get/ndo_hwtstamp_set callbacks. New drivers must not use deprecated ioctl commands.
quoted hunk ↗ jump to hunk
+ else + return phy_do_ioctl_running(tc6->netdev, rq, cmd); +} +EXPORT_SYMBOL_GPL(oa_tc6_ioctl); +