| Message ID | 20240110113730.3704712-1-horatiu.vultur@microchip.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | acd66c2126eb9b5da2d89ae07dbcd73b909c2111 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net] net: micrel: Fix PTP frame parsing for lan8841 | expand |
> The HW has the capability to check each frame if it is a PTP frame, which > domain it is, which ptp frame type it is, different ip address in the frame. And if > one of these checks fail then the frame is not timestamp. Most of these checks > were disabled except checking the field minorVersionPTP inside the PTP > header. Meaning that once a partner sends a frame compliant to 8021AS > which has minorVersionPTP set to 1, then the frame was not timestamp > because the HW expected by default a value of 0 in minorVersionPTP. > Fix this issue by removing this check so the userspace can decide on this. > > Fixes: cafc3662ee3f ("net: micrel: Add PHC support for lan8841") > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Divya Koppera <divya.koppera@microchip.com>
On Wed, 10 Jan, 2024 12:37:30 +0100 Horatiu Vultur <horatiu.vultur@microchip.com> wrote: > The HW has the capability to check each frame if it is a PTP frame, > which domain it is, which ptp frame type it is, different ip address in > the frame. And if one of these checks fail then the frame is not > timestamp. Most of these checks were disabled except checking the field > minorVersionPTP inside the PTP header. Meaning that once a partner sends > a frame compliant to 8021AS which has minorVersionPTP set to 1, then the > frame was not timestamp because the HW expected by default a value of 0 > in minorVersionPTP. > Fix this issue by removing this check so the userspace can decide on this. > > Fixes: cafc3662ee3f ("net: micrel: Add PHC support for lan8841") > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> > --- This is a good design decision. Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Hello: This patch was applied to netdev/net.git (main) by David S. Miller <davem@davemloft.net>: On Wed, 10 Jan 2024 12:37:30 +0100 you wrote: > The HW has the capability to check each frame if it is a PTP frame, > which domain it is, which ptp frame type it is, different ip address in > the frame. And if one of these checks fail then the frame is not > timestamp. Most of these checks were disabled except checking the field > minorVersionPTP inside the PTP header. Meaning that once a partner sends > a frame compliant to 8021AS which has minorVersionPTP set to 1, then the > frame was not timestamp because the HW expected by default a value of 0 > in minorVersionPTP. > Fix this issue by removing this check so the userspace can decide on this. > > [...] Here is the summary with links: - [net] net: micrel: Fix PTP frame parsing for lan8841 https://git.kernel.org/netdev/net/c/acd66c2126eb You are awesome, thank you!
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 9035c7f55d1bf..0f064d784e33b 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -3609,8 +3609,10 @@ static int lan8814_probe(struct phy_device *phydev) #define LAN8841_ADC_CHANNEL_MASK 198 #define LAN8841_PTP_RX_PARSE_L2_ADDR_EN 370 #define LAN8841_PTP_RX_PARSE_IP_ADDR_EN 371 +#define LAN8841_PTP_RX_VERSION 374 #define LAN8841_PTP_TX_PARSE_L2_ADDR_EN 434 #define LAN8841_PTP_TX_PARSE_IP_ADDR_EN 435 +#define LAN8841_PTP_TX_VERSION 438 #define LAN8841_PTP_CMD_CTL 256 #define LAN8841_PTP_CMD_CTL_PTP_ENABLE BIT(2) #define LAN8841_PTP_CMD_CTL_PTP_DISABLE BIT(1) @@ -3654,6 +3656,12 @@ static int lan8841_config_init(struct phy_device *phydev) phy_write_mmd(phydev, KSZ9131RN_MMD_COMMON_CTRL_REG, LAN8841_PTP_RX_PARSE_IP_ADDR_EN, 0); + /* Disable checking for minorVersionPTP field */ + phy_write_mmd(phydev, KSZ9131RN_MMD_COMMON_CTRL_REG, + LAN8841_PTP_RX_VERSION, 0xff00); + phy_write_mmd(phydev, KSZ9131RN_MMD_COMMON_CTRL_REG, + LAN8841_PTP_TX_VERSION, 0xff00); + /* 100BT Clause 40 improvenent errata */ phy_write_mmd(phydev, LAN8841_MMD_ANALOG_REG, LAN8841_ANALOG_CONTROL_1,
The HW has the capability to check each frame if it is a PTP frame, which domain it is, which ptp frame type it is, different ip address in the frame. And if one of these checks fail then the frame is not timestamp. Most of these checks were disabled except checking the field minorVersionPTP inside the PTP header. Meaning that once a partner sends a frame compliant to 8021AS which has minorVersionPTP set to 1, then the frame was not timestamp because the HW expected by default a value of 0 in minorVersionPTP. Fix this issue by removing this check so the userspace can decide on this. Fixes: cafc3662ee3f ("net: micrel: Add PHC support for lan8841") Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> --- drivers/net/phy/micrel.c | 8 ++++++++ 1 file changed, 8 insertions(+)