From: Chengwen Feng <[email protected]>
The PTP depends on special packet type reported by hardware which
enabled rxd advanced layout, so if the hardware doesn't support rxd
advanced layout, driver should ignore the PTP capability.
Fixes: 438752358158 ("net/hns3: get device capability from firmware")
Cc: [email protected]
Signed-off-by: Chengwen Feng <[email protected]>
Signed-off-by: Min Hu (Connor) <[email protected]>
---
drivers/net/hns3/hns3_cmd.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/hns3/hns3_cmd.c b/drivers/net/hns3/hns3_cmd.c
index df167f1..b571999 100644
--- a/drivers/net/hns3/hns3_cmd.c
+++ b/drivers/net/hns3/hns3_cmd.c
@@ -422,8 +422,19 @@ hns3_parse_capability(struct hns3_hw *hw,
if (hns3_get_bit(caps, HNS3_CAPS_FD_QUEUE_REGION_B))
hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_FD_QUEUE_REGION_B,
1);
- if (hns3_get_bit(caps, HNS3_CAPS_PTP_B))
- hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_PTP_B, 1);
+ if (hns3_get_bit(caps, HNS3_CAPS_PTP_B)) {
+ /*
+ * PTP depends on special packet type reported by hardware which
+ * enabled rxd advanced layout, so if the hardware doesn't
+ * support rxd advanced layout, driver should ignore the PTP
+ * capability.
+ */
+ if (hns3_get_bit(caps, HNS3_CAPS_RXD_ADV_LAYOUT_B))
+ hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_PTP_B, 1);
+ else
+ hns3_warn(hw, "ignore PTP capability due to lack of "
+ "rxd advanced layout capability.");
+ }
if (hns3_get_bit(caps, HNS3_CAPS_TX_PUSH_B))
hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_TX_PUSH_B, 1);
if (hns3_get_bit(caps, HNS3_CAPS_PHY_IMP_B))
--
2.7.4
