[dpdk-dev] [PATCH v2 02/33] i40e: disable setting of phy configuration

[Helin Zhang <helin.zhang@intel.com>]

There was a known link issue on 40G ports on NVM version (FVL3E),
when setting phy configuration. As a workaround, setting of phy
configuration should be disabled. The impact is that the link cannot
be forcedly configured, which doesn't affect any feature functions.
The workaround can be removed when a formal fix is ready later.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
---
 lib/librte_pmd_i40e/i40e_ethdev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index 40c90d7..49d1067 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -791,6 +791,10 @@ i40e_phy_conf_link(struct i40e_hw *hw, uint8_t abilities, uint8_t force_speed)
 			I40E_LINK_SPEED_100MB;
 	int ret = -ENOTSUP;
 
+	/* Skip it on 40G interfaces, as a workaround for the link issue */
+	if (i40e_is_40G_device(hw->device_id))
+		return I40E_SUCCESS;
+
 	status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_ab,
 					      NULL);
 	if (status)
-- 
1.8.1.4