On 3/3/2021 1:51 PM, oulijun wrote:

在 2021/3/3 21:27, Ferruh Yigit 写道:

quoted

On 3/2/2021 1:58 PM, Lijun Ou wrote:

quoted

From: Huisong Li <lihuisong@huawei.com>

The configuration operation for PHY is implemented by firmware. And
a capability flag will be report to driver, which means the firmware
supports the PHY driver.  However, the current implementation only
supports obtaining the capability bit, but some basic functions of
copper ports in driver, such as, the query of link status and link
info, are not supported.

Therefore, it is necessary for driver to set the copper capability
bit to zero when the firmware supports the configuration of the PHY.

Fixes: 438752358158 ("net/hns3: get device capability from firmware")
Fixes: 95e50325864c ("net/hns3: support copper media type")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
---
  drivers/net/hns3/hns3_cmd.c | 8 +++++++-
  1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hns3/hns3_cmd.c b/drivers/net/hns3/hns3_cmd.c
index 32cd56b..ec34615 100644
--- a/drivers/net/hns3/hns3_cmd.c
+++ b/drivers/net/hns3/hns3_cmd.c

@@ -423,8 +423,14 @@ static void hns3_parse_capability(struct hns3_hw *hw,

          hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_PTP_B, 1);
      if (hns3_get_bit(caps, HNS3_CAPS_TX_PUSH_B))
          hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_TX_PUSH_B, 1);
+    /*
+     * Currently, the query of link status and link info on copper ports
+     * are not supported. So it is necessary for driver to set the copper
+     * capability bit to zero when the firmware supports the configuration
+     * of the PHY.
+     */
      if (hns3_get_bit(caps, HNS3_CAPS_PHY_IMP_B))
-        hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_COPPER_B, 1);
+        hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_COPPER_B, 0);
      if (hns3_get_bit(caps, HNS3_CAPS_TQP_TXRX_INDEP_B))
          hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_INDEP_TXRX_B, 1);
      if (hns3_get_bit(caps, HNS3_CAPS_STASH_B))

Hi Lijun,

I see this patch is to be accurate, but in next patch the link status is 
implemented and this patch practically reverted back completely, so I guess 
this patch can be dropped, what do you think?

Yes, I am.  I split up on purpose. We find that if patch [8/14] is not 
integrated, the COPPER function should not be supported in hw->capability.That 
is, in 20.11 and 21.02, hw->capability should not support copper,this patch 
needs to be backported to 20.11 and 21.02.
For the above reasons, we'll split it up.

make sense from backporting point of view, OK to continue as it is.