net/qede: add devargs to disable NPAR Tx switching

Added a run-time argument npar_tx_switching to enable/disable
Tx switching for multi-fucntion devices (NPAR).
Rename vf_txswitch option to vf_tx_switching.

Sample usage to disable Tx switching for NPAR or VF is something like...

 -w 05:00.0,npar_tx_switching=0 -w 05:00.1,npar_tx_switching=0
 -w 05:00.0,vf_tx_switching=0 -w 05:00.1,vf_tx_switching=0

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index f25fb91..025cd2a 100644 (file)
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -499,6 +499,9 @@ qede_start_vport(struct qede_dev *qdev, uint16_t mtu)
        return 0;
 }
 
+#define QEDE_NPAR_TX_SWITCHING         "npar_tx_switching"
+#define QEDE_VF_TX_SWITCHING           "vf_tx_switching"
+
 /* Activate or deactivate vport via vport-update */
 int qede_activate_vport(struct rte_eth_dev *eth_dev, bool flg)
 {
@@ -516,10 +519,12 @@ int qede_activate_vport(struct rte_eth_dev *eth_dev, bool flg)
        params.vport_active_rx_flg = flg;
        params.vport_active_tx_flg = flg;
        if (!qdev->enable_tx_switching) {
-               if (IS_VF(edev)) {
+               if ((QEDE_NPAR_TX_SWITCHING != NULL) ||
+                   ((QEDE_VF_TX_SWITCHING != NULL) && IS_VF(edev))) {
                        params.update_tx_switching_flg = 1;
                        params.tx_switching_flg = !flg;
-                       DP_INFO(edev, "VF tx-switching is disabled\n");
+                       DP_INFO(edev, "%s tx-switching is disabled\n",
+                               QEDE_NPAR_TX_SWITCHING ? "NPAR" : "VF");
                }
        }
        for_each_hwfn(edev, i) {
@@ -1373,10 +1378,9 @@ static void qede_dev_stop(struct rte_eth_dev *eth_dev)
        DP_INFO(edev, "Device is stopped\n");
 }
 
-#define QEDE_TX_SWITCHING              "vf_txswitch"
-
 const char *valid_args[] = {
-       QEDE_TX_SWITCHING,
+       QEDE_NPAR_TX_SWITCHING,
+       QEDE_VF_TX_SWITCHING,
        NULL,
 };
 
@@ -1395,7 +1399,8 @@ static int qede_args_check(const char *key, const char *val, void *opaque)
                return errno;
        }
 
-       if (strcmp(QEDE_TX_SWITCHING, key) == 0)
+       if ((strcmp(QEDE_NPAR_TX_SWITCHING, key) == 0) ||
+           (strcmp(QEDE_VF_TX_SWITCHING, key) == 0))
                qdev->enable_tx_switching = !!tmp;
 
        return ret;