Logan Gunthorpe 67fa8bfff7 ntb_transport: Fix bug with max_mw_size parameter ... [ Upstream commit cbd27448fa ] When using the max_mw_size parameter of ntb_transport to limit the size of the Memory windows, communication cannot be established and the queues freeze. This is because the mw_size that's reported to the peer is correctly limited but the size used locally is not. So the MW is initialized with a buffer smaller than the window but the TX side is using the full window. This means the TX side will be writing to a region of the window that points nowhere. This is easily fixed by applying the same limit to tx_size in ntb_transport_init_queue(). Fixes: e26a5843f7 ("NTB: Split ntb_hw_intel and ntb_transport drivers") Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-26 11:02:13 +02:00
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hw	NTB: Add IDT 89HPESxNTx PCIe-switches support	2017-07-06 11:30:07 -04:00
test	ntb: use correct mw_count function in ntb_tool and ntb_transport	2017-07-17 12:56:15 -04:00
Kconfig	NTB: Add ping pong test client	2015-07-04 14:07:42 -04:00
Makefile	NTB: Add ping pong test client	2015-07-04 14:07:42 -04:00
ntb.c	NTB: Add Messaging NTB API	2017-07-06 11:30:07 -04:00
ntb_transport.c	ntb_transport: Fix bug with max_mw_size parameter	2018-04-26 11:02:13 +02:00