net/octeontx2: skip flow control on LBK ports

LBK interface does not support any flow control related
HW configurations.

Skip flow control set requests on LBK bound ethports.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>

diff --git a/drivers/net/octeontx2/otx2_flow_ctrl.c b/drivers/net/octeontx2/otx2_flow_ctrl.c
index 1d00e46..1b84998 100644 (file)
--- a/drivers/net/octeontx2/otx2_flow_ctrl.c
+++ b/drivers/net/octeontx2/otx2_flow_ctrl.c
@@ -50,6 +50,11 @@ otx2_nix_flow_ctrl_get(struct rte_eth_dev *eth_dev,
        struct otx2_mbox *mbox = dev->mbox;
        int rc;
 
+       if (otx2_dev_is_lbk(dev)) {
+               fc_conf->mode = RTE_FC_NONE;
+               return 0;
+       }
+
        req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(mbox);
        req->set = 0;
 
@@ -137,6 +142,11 @@ otx2_nix_flow_ctrl_set(struct rte_eth_dev *eth_dev,
        uint8_t tx_pause, rx_pause;
        int rc = 0;
 
+       if (otx2_dev_is_lbk(dev)) {
+               otx2_info("No flow control support for LBK bound ethports");
+               return -ENOTSUP;
+       }
+
        if (fc_conf->high_water || fc_conf->low_water || fc_conf->pause_time ||
            fc_conf->mac_ctrl_frame_fwd || fc_conf->autoneg) {
                otx2_info("Flowctrl parameter is not supported");
@@ -189,6 +199,9 @@ otx2_nix_update_flow_ctrl_mode(struct rte_eth_dev *eth_dev)
        struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
        struct rte_eth_fc_conf fc_conf;
 
+       if (otx2_dev_is_lbk(dev))
+               return 0;
+
        memset(&fc_conf, 0, sizeof(struct rte_eth_fc_conf));
        /* Both Rx & Tx flow ctrl get enabled(RTE_FC_FULL) in HW
         * by AF driver, update those info in PMD structure.