hv_netvsc: netvsc_teardown_gpadl() split

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[ Commit 0cf737808a upstream. ]

It was found that in some cases host refuses to teardown GPADL for send/
receive buffers (probably when some work with these buffere is scheduled or
ongoing). Change the teardown logic to be:
1) Send NVSP_MSG1_TYPE_REVOKE_* messages
2) Close the channel
3) Teardown GPADLs.
This seems to work reliably.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Vitaly Kuznetsov 2018-05-14 15:32:05 -07:00 • committed by Greg Kroah-Hartman

parent 6296e73e45

commit 284a58c02e

1 changed files with 36 additions and 33 deletions

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drivers/net/hyperv/netvsc.c

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