net/bnxt: fix check for autoneg enablement

HWRM_PORT_PHY_QCFG_OUTPUT response indicates the autoneg speed mask
supported by the FW. While enabling autoneg, driver should also check
the FW advertised PAM4 speeds supported in auto mode which is set
in the HWRM_PORT_PHY_QCFG_OUTPUT response.

Fixes: c23f9ded0391 ("net/bnxt: support 200G PAM4 link")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 5850e7e..5418fa1 100644 (file)
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3253,7 +3253,8 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up)
                                          bp->link_info->link_signal_mode);
        link_req.phy_flags = HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESET_PHY;
        /* Autoneg can be done only when the FW allows. */
-       if (autoneg == 1 && bp->link_info->support_auto_speeds) {
+       if (autoneg == 1 &&
+           (bp->link_info->support_auto_speeds || bp->link_info->support_pam4_auto_speeds)) {
                link_req.phy_flags |=
                                HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESTART_AUTONEG;
                link_req.auto_link_speed_mask =