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authorLogan Gunthorpe <logang@deltatee.com>2017-08-03 20:19:44 +0200
committerJon Mason <jdmason@kudzu.us>2017-11-19 02:37:11 +0100
commit980c41c86b37b6086ad758566b437cb1a469b4bc (patch)
treec42e292a6364558658a70ce27eb623e138d81ba6 /include/linux/ntb.h
parentNTB: switchtec: Add link event notifier callback (diff)
downloadlinux-980c41c86b37b6086ad758566b437cb1a469b4bc.tar.xz
linux-980c41c86b37b6086ad758566b437cb1a469b4bc.zip
NTB: Ensure ntb_mw_get_align() is only called when the link is up
With Switchtec hardware it's impossible to get the alignment parameters for a peer's memory window until the peer's driver has configured its windows. Strictly speaking, the link doesn't have to be up for this, but the link being up is the only way the client can tell that the other side has been configured. This patch converts ntb_transport and ntb_perf to use this function after the link goes up. This simplifies these clients slightly because they no longer have to store the alignment parameters. It also tweaks ntb_tool so that peer_mw_trans will print zero if it is run before the link goes up. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Allen Hubbe <Allen.Hubbe@dell.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
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