Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 16/21] NTB: reset tx_index on link toggle | Date | Wed, 22 May 2013 15:10:34 -0700 |
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3.9-stable review patch. If anyone has any objections, please let me know.
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From: Jon Mason <jon.mason@intel.com>
commit 90f9e934647e652a69396e18c779215a493271cf upstream.
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/ntb/ntb_transport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -505,6 +505,7 @@ static void ntb_transport_setup_qp_mw(st 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(str 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];
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