diff options
| author | Nicholas Bellinger <nab@daterainc.com> | 2013-08-20 14:24:09 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-09-09 14:29:35 -0700 |
| commit | 0123a9ec6a4fea20d5afea90c9b47fb73fb1bc34 (patch) | |
| tree | 6ac9f2539a9db0013757f51b18a97f3bf8ded49a /include/target | |
| parent | 76dde50ebef75773ea2b68e0bf914e87e6a3711c (diff) | |
| download | linux-0123a9ec6a4fea20d5afea90c9b47fb73fb1bc34.tar.gz | |
target: Add MAXIMUM COMPARE AND WRITE LENGTH in Block Limits VPD
This patch adds the MAXIMUM COMPARE AND WRITE LENGTH bit, currently hardcoded to a single logical block (NoLB=1) within the Block Limits VPD in spc_emulate_evpd_b0(). Also add emulate_caw device attribute in configfs (enabled by default) to allow the exposure of this bit to be disabled, if necessary. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 7fdb3fae2961..61a4dc890701 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -97,6 +97,8 @@ * block/blk-lib.c:blkdev_issue_discard() */ #define DA_EMULATE_TPWS 0 +/* Emulation for CompareAndWrite (AtomicTestandSet) by default */ +#define DA_EMULATE_CAW 1 /* No Emulation for PSCSI by default */ #define DA_EMULATE_ALUA 0 /* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */ @@ -602,6 +604,7 @@ struct se_dev_attrib { int emulate_tas; int emulate_tpu; int emulate_tpws; + int emulate_caw; int enforce_pr_isids; int is_nonrot; int emulate_rest_reord; |