NTB: reset tx_index on link toggle

If the NTB link toggles, the driver could stop receiving due to the
tx_index not being set to 0 on the transmitting size on a link-up event.
This is due to the driver expecting the incoming data to start at the
beginning of the receive buffer and not at a random place.

Signed-off-by: Jon Mason <jon.mason@intel.com>

diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index be416d6850f004642845b65dfdfbf55482ead24c..73a000ed7a9fe201ae35f35fd6bd97c12409e2d4 100644 (file)
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -505,6 +505,7 @@ static void ntb_transport_setup_qp_mw(struct ntb_transport *nt,
 
        qp->rx_pkts = 0;
        qp->tx_pkts = 0;
+       qp->tx_index = 0;
 }
 
 static void ntb_free_mw(struct ntb_transport *nt, int num_mw)
@@ -819,7 +820,6 @@ static void ntb_transport_init_queue(struct ntb_transport *nt,
        qp->tx_mw = qp->rx_info + 1;
        qp->tx_max_frame = min(transport_mtu, tx_size);
        qp->tx_max_entry = tx_size / qp->tx_max_frame;
-       qp->tx_index = 0;
 
        if (nt->debugfs_dir) {
                char debugfs_name[4];