diff options
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_configfs.c | 4 | ||||
| -rw-r--r-- | drivers/target/target_core_device.c | 14 | ||||
| -rw-r--r-- | drivers/target/target_core_internal.h | 1 | ||||
| -rw-r--r-- | drivers/target/target_core_spc.c | 6 |
4 files changed, 25 insertions, 0 deletions
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 939ecc5679c..026e42bc4b5 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -639,6 +639,9 @@ SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); DEF_DEV_ATTRIB(emulate_caw); SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); +DEF_DEV_ATTRIB(emulate_3pc); +SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); + DEF_DEV_ATTRIB(enforce_pr_isids); SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); @@ -697,6 +700,7 @@ static struct configfs_attribute *target_core_dev_attrib_attrs[] = { &target_core_dev_attrib_emulate_tpu.attr, &target_core_dev_attrib_emulate_tpws.attr, &target_core_dev_attrib_emulate_caw.attr, + &target_core_dev_attrib_emulate_3pc.attr, &target_core_dev_attrib_enforce_pr_isids.attr, &target_core_dev_attrib_is_nonrot.attr, &target_core_dev_attrib_emulate_rest_reord.attr, diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index b2b081236ab..f9f17934f95 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) return 0; } +int se_dev_set_emulate_3pc(struct se_device *dev, int flag) +{ + if (flag != 0 && flag != 1) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + dev->dev_attrib.emulate_3pc = flag; + pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n", + dev, flag); + + return 0; +} + int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) { if ((flag != 0) && (flag != 1)) { @@ -1442,6 +1455,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; + dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; dev->dev_attrib.is_nonrot = DA_IS_NONROT; dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 805ceb4285b..579128abe3f 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -34,6 +34,7 @@ int se_dev_set_emulate_tas(struct se_device *, int); int se_dev_set_emulate_tpu(struct se_device *, int); int se_dev_set_emulate_tpws(struct se_device *, int); int se_dev_set_emulate_caw(struct se_device *, int); +int se_dev_set_emulate_3pc(struct se_device *, int); int se_dev_set_enforce_pr_isids(struct se_device *, int); int se_dev_set_is_nonrot(struct se_device *, int); int se_dev_set_emulate_rest_reord(struct se_device *dev, int); diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 894e83bc223..566dd279467 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -95,6 +95,12 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) */ spc_fill_alua_data(lun->lun_sep, buf); + /* + * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY + */ + if (dev->dev_attrib.emulate_3pc) + buf[5] |= 0x8; + buf[7] = 0x2; /* CmdQue=1 */ snprintf(&buf[8], 8, "LIO-ORG"); |