Add padding to virtchnl2 PTP structures to match the Control Plane expected message sizes: * virtchnl2_ptp_get_dev_clk_time: 8 -> 16 bytes * virtchnl2_ptp_set_dev_clk_time: 8 -> 16 bytes * virtchnl2_ptp_get_cross_time: 16 -> 24 bytes The FW expects the above sizes and PTP negotiation fails due to the mismatch. Previously neither the FW nor the driver checked message/reply sizes strictly, so the problem appeared only after recent validation improvements. reproduction steps: ptp4l -i -m Observe: failed to open /dev/ptp0: Permission denied Fixes: bf27283ba594 ("virtchnl: add PTP virtchnl definitions") Cc: stable@vger.kernel.org Reviewed-by: Aleksandr Loktionov Reviewed-by: Alexander Lobakin Signed-off-by: Przemyslaw Korba --- drivers/net/ethernet/intel/idpf/virtchnl2.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/idpf/virtchnl2.h b/drivers/net/ethernet/intel/idpf/virtchnl2.h index 02ae447cc24a..39fea65c075c 100644 --- a/drivers/net/ethernet/intel/idpf/virtchnl2.h +++ b/drivers/net/ethernet/intel/idpf/virtchnl2.h @@ -1572,13 +1572,15 @@ VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_ptp_get_vport_tx_tstamp_latches); * struct virtchnl2_ptp_get_dev_clk_time - Associated with message * VIRTCHNL2_OP_PTP_GET_DEV_CLK_TIME. * @dev_time_ns: Device clock time value in nanoseconds + * @pad: Padding for future extensions * * PF/VF sends this message to receive the time from the main timer. */ struct virtchnl2_ptp_get_dev_clk_time { __le64 dev_time_ns; + u8 pad[8]; }; -VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_ptp_get_dev_clk_time); +VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_ptp_get_dev_clk_time); /** * struct virtchnl2_ptp_get_cross_time: Associated with message @@ -1586,26 +1588,30 @@ VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_ptp_get_dev_clk_time); * @sys_time_ns: System counter value expressed in nanoseconds, read * synchronously with device time * @dev_time_ns: Device clock time value expressed in nanoseconds + * @pad: Padding for future extensions * * PF/VF sends this message to receive the cross time. */ struct virtchnl2_ptp_get_cross_time { __le64 sys_time_ns; __le64 dev_time_ns; + u8 pad[8]; }; -VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_ptp_get_cross_time); +VIRTCHNL2_CHECK_STRUCT_LEN(24, virtchnl2_ptp_get_cross_time); /** * struct virtchnl2_ptp_set_dev_clk_time: Associated with message * VIRTCHNL2_OP_PTP_SET_DEV_CLK_TIME. * @dev_time_ns: Device time value expressed in nanoseconds to set + * @pad: Padding for future extensions * * PF/VF sends this message to set the time of the main timer. */ struct virtchnl2_ptp_set_dev_clk_time { __le64 dev_time_ns; + u8 pad[8]; }; -VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_ptp_set_dev_clk_time); +VIRTCHNL2_CHECK_STRUCT_LEN(16, virtchnl2_ptp_set_dev_clk_time); /** * struct virtchnl2_ptp_adj_dev_clk_fine: Associated with message base-commit: 4548d565aa80aad80274e2f3bff4d7cd914c703e -- 2.47.3