linux/drivers/ntb, branch v4.2

ntb: avoid format string in dev_set_name

2015-08-09T20:32:22Z

Avoid any chance of format string expansion when calling dev_set_name. Signed-off-by: Kees Cook Signed-off-by: Jon Mason

NTB: Fix dereference before check

2015-08-09T20:32:22Z

Remove early dereference of a pointer that is checked later in the code. Reported-by: Dan Carpenter Signed-off-by: Allen Hubbe Signed-off-by: Jon Mason

NTB: Fix zero size or integer overflow in ntb_set_mw

2015-08-09T20:32:22Z

A plain 32 bit integer will overflow for values over 4GiB. Change the plain integer size to the appropriate size type in ntb_set_mw. Change the type of the size parameter and two local variables used for size. Even if there is no overflow, a size of zero is invalid here. Reported-by: Juyoung Jung Signed-off-by: Allen Hubbe Signed-off-by: Jon Mason

NTB: Schedule to receive on QP link up

2015-08-09T20:32:22Z

Schedule to receive on QP link up, to make sure that the doorbell is properly cleared for interrupts. Signed-off-by: Allen Hubbe Signed-off-by: Jon Mason

NTB: Fix oops in debugfs when transport is half-up

2015-08-09T20:32:22Z

When the remote side is not up, we do not have all the context for the transport, and that causes NULL ptr access. Have the debugfs reads check to see if transport is up before we make access. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason

NTB: Fix transport stats for multiple devices

2015-08-09T20:32:21Z

Currently the debugfs does not have files for all NTB transport queue pairs. When there are multiple NTBs present in a system, the QP names of the last transport clobber the names of previously added transport QPs. Only the last added QPs can be observed via debugfs. Create a directory per NTB transport to associate the QPs with that transport. Name the directory the same as the PCI device. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason

NTB: Fix ntb_transport out-of-order RX update

2015-08-09T20:32:21Z

It was possible for a synchronous update of the RX index in the error case to get ahead of the asynchronous RX index update in the normal case. Change the RX processing to preserve an RX completion order. There were two error cases. First, if a buffer is not present to receive data, there would be no queue entry to preserve the RX completion order. Instead of dropping the RX frame, leave the RX frame in the ring. Schedule RX processing when RX entries are enqueued, in case there are RX frames waiting in the ring to be received. Second, if a buffer is too small to receive data, drop the frame in the ring, mark the RX entry as done, and indicate the error in the RX entry length. Check for a negative length in the receive callback in ntb_netdev, and count occurrences as rx_length_errors. Signed-off-by: Allen Hubbe Signed-off-by: Jon Mason

NTB: Add split BAR output for debugfs stats

2015-07-04T18:09:32Z

When split BAR is enabled, the driver needs to dump out the split BAR registers rather than the original 64bit BAR registers. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason

NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe

2015-07-04T18:09:30Z

The unsafe doorbell and scratchpad access should display reason when WARN is called. Otherwise we get a stack dump without any explanation. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason

NTB: Print driver name and version in module init

2015-07-04T18:09:28Z

Printouts driver name and version to indicate what is being loaded. Signed-off-by: Dave Jiang Signed-off-by: Jon Mason