diff options
author | Nicholas Bellinger <nab@daterainc.com> | 2013-08-22 17:17:20 -0400 |
---|---|---|
committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-09-10 19:48:46 -0400 |
commit | d397a445f43c7ae9b35260f236a08d5b5760de3d (patch) | |
tree | 9bc760fc767b73a5a20cba6e4ddd0154aa7003a6 /drivers/target/target_core_device.c | |
parent | 04b1b7954649767f2ab9bf08cf2457e21d5c7167 (diff) |
target: Add Third Party Copy (3PC) bit in INQUIRY response
This patch adds the Third Party Copy (3PC) bit to signal support
for EXTENDED_COPY within standard inquiry response data.
Also add emulate_3pc 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: Roland Dreier <roland@purestorage.com>
Cc: Zach Brown <zab@redhat.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 'drivers/target/target_core_device.c')
-rw-r--r-- | drivers/target/target_core_device.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index b2b081236abb..f9f17934f956 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c | |||
@@ -906,6 +906,19 @@ int se_dev_set_emulate_caw(struct se_device *dev, int flag) | |||
906 | return 0; | 906 | return 0; |
907 | } | 907 | } |
908 | 908 | ||
909 | int se_dev_set_emulate_3pc(struct se_device *dev, int flag) | ||
910 | { | ||
911 | if (flag != 0 && flag != 1) { | ||
912 | pr_err("Illegal value %d\n", flag); | ||
913 | return -EINVAL; | ||
914 | } | ||
915 | dev->dev_attrib.emulate_3pc = flag; | ||
916 | pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n", | ||
917 | dev, flag); | ||
918 | |||
919 | return 0; | ||
920 | } | ||
921 | |||
909 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) | 922 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
910 | { | 923 | { |
911 | if ((flag != 0) && (flag != 1)) { | 924 | if ((flag != 0) && (flag != 1)) { |
@@ -1442,6 +1455,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |||
1442 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | 1455 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; |
1443 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | 1456 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; |
1444 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; | 1457 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
1458 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; | ||
1445 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; | 1459 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
1446 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; | 1460 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
1447 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | 1461 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |