iw_cxgb4: do not send RX_DATA_ACK CPLs after close/abort

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[ Upstream commit 3bcf96e018 ]

Function rx_data(), which handles ingress CPL_RX_DATA messages, was
always sending an RX_DATA_ACK with the goal of updating the credits.
However, if the RDMA connection is moved out of FPDU mode abruptly,
then it is possible for iw_cxgb4 to process queued RX_DATA CPLs after HW
has aborted the connection.  These CPLs should not trigger RX_DATA_ACKS.
If they do, HW can see a READ after DELETE of the DB_LE hash entry for
the tid and post a LE_DB HashTblMemCrcError.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Steve Wise 2016-12-22 07:40:37 -08:00 • committed by Greg Kroah-Hartman

parent 984922f2c8

commit 44d52834ef

1 changed files with 4 additions and 3 deletions

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drivers/infiniband/hw/cxgb4/cm.c

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