The UAS protocol does transfer the information "expected data". The
device is supposed to look at the cdb information for that. This patch
introduces a flag where the expected data (according to cdb) is the
expected data.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/target/target_core_transport.c | 3 +++
include/target/target_core_base.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 05bf4fe..e3d2d89 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -3005,6 +3005,9 @@ static int transport_generic_cmd_sequencer(
goto out_unsupported_cdb;
}
+ if (cmd->unknown_data_length)
+ cmd->data_length = size;
+
if (size != cmd->data_length) {
pr_warn("TARGET_CORE[%s]: Expected Transfer Length:"
" %u does not match SCSI CDB Length: %u for SAM Opcode:"
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 8b130c4..e353ba9 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -515,6 +515,7 @@ struct se_cmd {
/* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
unsigned check_release:1;
unsigned cmd_wait_set:1;
+ unsigned unknown_data_length:1;
/* See se_cmd_flags_table */
u32 se_cmd_flags;
u32 se_ordered_id;
--
1.7.7.3
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