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authorNicholas Bellinger <nab@linux-iscsi.org>2015-03-28 06:30:57 (GMT)
committerNicholas Bellinger <nab@linux-iscsi.org>2015-04-08 06:27:47 (GMT)
commit64b16887749fd8e8000cc2ad1acca3cd29f84086 (patch)
treefcbc1d1206ef1299c83f8c1ebe9d2e742c61ec9e /drivers/scsi
parent59bb0ff5db755a6a833acd633015b406d0894253 (diff)
downloadlinux-64b16887749fd8e8000cc2ad1acca3cd29f84086.tar.xz
tcm_qla2xxx: Add fabric_prot_type attribute support
This patch updates qla2xxx target to add a new fabric_prot_type TPG attribute, used for controlling LLD level protection into LIO when the backend device does not support T10-PI. This is required for qla_target.c to enable WRITE_STRIP + READ_INSERT hardware offloads. It's disabled by default and controls which se_sesion->sess_prot_type are set at tcm_qla2xxx_check_initiator_node_acl() session registration time. Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c44
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.h1
2 files changed, 45 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 57346ab..843b53b 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -336,6 +336,14 @@ static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg
return tpg->tpg_attrib.demo_mode_login_only;
}
+static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return tpg->tpg_attrib.fabric_prot_type;
+}
+
static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
struct se_portal_group *se_tpg)
{
@@ -1091,9 +1099,44 @@ static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
+static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
+ struct se_portal_group *se_tpg,
+ const char *page,
+ size_t count)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ unsigned long val;
+ int ret = kstrtoul(page, 0, &val);
+
+ if (ret) {
+ pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
+ return ret;
+ }
+ if (val != 0 && val != 1 && val != 3) {
+ pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
+ return -EINVAL;
+ }
+ tpg->tpg_attrib.fabric_prot_type = val;
+
+ return count;
+}
+
+static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
+ struct se_portal_group *se_tpg,
+ char *page)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
+}
+TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
+
static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
&tcm_qla2xxx_tpg_enable.attr,
&tcm_qla2xxx_tpg_dynamic_sessions.attr,
+ &tcm_qla2xxx_tpg_fabric_prot_type.attr,
NULL,
};
@@ -1959,6 +2002,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = {
tcm_qla2xxx_check_demo_write_protect,
.tpg_check_prod_mode_write_protect =
tcm_qla2xxx_check_prod_write_protect,
+ .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
.tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
.tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
index 10c0021..2329511 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.h
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
@@ -33,6 +33,7 @@ struct tcm_qla2xxx_tpg_attrib {
int demo_mode_write_protect;
int prod_mode_write_protect;
int demo_mode_login_only;
+ int fabric_prot_type;
};
struct tcm_qla2xxx_tpg {