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authorIlias Tsitsimpis <iliastsi@arrikto.com>2015-04-23 21:30:06 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2015-05-30 22:41:45 -0700
commit9736f4ad7c6dd79eea36c7fb537a27bbd802582a (patch)
treed34a01f2696548332c08b254bd4b0c1aa025b173 /drivers/target/loopback
parent2bc396a2529ae8a2287f17a49d893ce790e19110 (diff)
target/loop: Enable VARLEN CDB support
Field shost->max_cmd_len is used to inform Linux / the SCSI midlayer of the maximum CDB size an LLD is capable of handling. Set this field to SCSI_MAX_VARLEN_CDB_SIZE for target, to enable support for variable-sized CDBs (0x7E). Also remove the definition of TL_SCSI_MAX_CMD_LEN since it is now redundant. Signed-off-by: Ilias Tsitsimpis <iliastsi@arrikto.com> Signed-off-by: Vangelis Koukis <vkoukis@arrikto.com> Reviewed-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/loopback')
-rw-r--r--drivers/target/loopback/tcm_loop.c2
-rw-r--r--drivers/target/loopback/tcm_loop.h5
2 files changed, 1 insertions, 6 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 51f0c895c6a5..b863ce894977 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -409,7 +409,7 @@ static int tcm_loop_driver_probe(struct device *dev)
sh->max_id = 2;
sh->max_lun = 0;
sh->max_channel = 0;
- sh->max_cmd_len = TL_SCSI_MAX_CMD_LEN;
+ sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE;
host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |
diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h
index 1e72ff77cac9..433e595e5daa 100644
--- a/drivers/target/loopback/tcm_loop.h
+++ b/drivers/target/loopback/tcm_loop.h
@@ -2,11 +2,6 @@
#define TL_WWN_ADDR_LEN 256
#define TL_TPGS_PER_HBA 32
-/*
- * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
- */
-#define TL_SCSI_MAX_CMD_LEN 32
-
struct tcm_loop_cmd {
/* State of Linux/SCSI CDB+Data descriptor */
u32 sc_cmd_state;

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