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 <pf> -m
Observe: failed to open /dev/ptp0: Permission denied
Fixes: bf27283ba594 ("virtchnl: add PTP virtchnl definitions")
Cc: [email protected]
Reviewed-by: Aleksandr Loktionov <[email protected]>
Reviewed-by: Alexander Lobakin <[email protected]>
Signed-off-by: Przemyslaw Korba <[email protected]>
---
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
