Messages in this thread Patch in this message | | | From | Spencer Baugh <> | Subject | [PATCH] target: allow underflow/overflow for PR OUT etc. commands | Date | Wed, 22 Jul 2015 15:08:18 -0700 |
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From: Roland Dreier <roland@purestorage.com>
It's not necessarily a fatal error if a command with a data-out phase has a data length that differs from the transport data length (e.g. PERSISTENT RESERVE OUT might have a parameter list length in the CDB that's smaller than the FC_DL field), so allow these commands. The Windows compliance test sends them.
Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Spencer Baugh <sbaugh@catern.com> --- drivers/target/target_core_transport.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index ac002a7..f6626bb 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1087,9 +1087,9 @@ target_cmd_size_check(struct se_cmd *cmd, unsigned int size) " 0x%02x\n", cmd->se_tfo->get_fabric_name(), cmd->data_length, size, cmd->t_task_cdb[0]); - if (cmd->data_direction == DMA_TO_DEVICE) { - pr_err("Rejecting underflow/overflow" - " WRITE data\n"); + if (cmd->data_direction == DMA_TO_DEVICE && + cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) { + pr_err("Rejecting underflow/overflow WRITE data\n"); return TCM_INVALID_CDB_FIELD; } /* -- 2.5.0.rc3
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