net/ionic: preserve Rx mode across LIF stop/start

Otherwise, non-default settings (like PROMISC) get reset.
This will become important when link toggling is tied to LIF stop/start.

Signed-off-by: Andrew Boyer <aboyer@pensando.io>

diff --git a/drivers/net/ionic/ionic_lif.c b/drivers/net/ionic/ionic_lif.c
index 646c921..875c7e5 100644 (file)
--- a/drivers/net/ionic/ionic_lif.c
+++ b/drivers/net/ionic/ionic_lif.c
@@ -1573,7 +1573,7 @@ ionic_lif_configure(struct ionic_lif *lif)
 int
 ionic_lif_start(struct ionic_lif *lif)
 {
-       uint32_t rx_mode = 0;
+       uint32_t rx_mode;
        uint32_t i;
        int err;
 
@@ -1581,16 +1581,16 @@ ionic_lif_start(struct ionic_lif *lif)
        if (err)
                return err;
 
-       IONIC_PRINT(DEBUG, "Setting RX mode on port %u",
-               lif->port_id);
-
-       rx_mode |= IONIC_RX_MODE_F_UNICAST;
-       rx_mode |= IONIC_RX_MODE_F_MULTICAST;
-       rx_mode |= IONIC_RX_MODE_F_BROADCAST;
+       if (!lif->rx_mode) {
+               IONIC_PRINT(DEBUG, "Setting RX mode on %s",
+                       lif->name);
 
-       lif->rx_mode = 0; /* set by ionic_set_rx_mode */
+               rx_mode  = IONIC_RX_MODE_F_UNICAST;
+               rx_mode |= IONIC_RX_MODE_F_MULTICAST;
+               rx_mode |= IONIC_RX_MODE_F_BROADCAST;
 
-       ionic_set_rx_mode(lif, rx_mode);
+               ionic_set_rx_mode(lif, rx_mode);
+       }
 
        IONIC_PRINT(DEBUG, "Starting %u RX queues and %u TX queues "
                "on port %u",