target/spc: Only expose PI mode page bits when supported by fabric
Only expose the control modepage bit for Application Tag Owner (ATO)
if the session + fabric support DIX PASS operations.
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index d4c6a31..8653666 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -769,7 +769,7 @@
return ret;
}
-static int spc_modesense_rwrecovery(struct se_device *dev, u8 pc, u8 *p)
+static int spc_modesense_rwrecovery(struct se_cmd *cmd, u8 pc, u8 *p)
{
p[0] = 0x01;
p[1] = 0x0a;
@@ -782,8 +782,11 @@
return 12;
}
-static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p)
+static int spc_modesense_control(struct se_cmd *cmd, u8 pc, u8 *p)
{
+ struct se_device *dev = cmd->se_dev;
+ struct se_session *sess = cmd->se_sess;
+
p[0] = 0x0a;
p[1] = 0x0a;
@@ -875,8 +878,10 @@
* type, shall not modify the contents of the LOGICAL BLOCK REFERENCE
* TAG field.
*/
- if (dev->dev_attrib.pi_prot_type)
- p[5] |= 0x80;
+ if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) {
+ if (dev->dev_attrib.pi_prot_type)
+ p[5] |= 0x80;
+ }
p[8] = 0xff;
p[9] = 0xff;
@@ -886,8 +891,10 @@
return 12;
}
-static int spc_modesense_caching(struct se_device *dev, u8 pc, u8 *p)
+static int spc_modesense_caching(struct se_cmd *cmd, u8 pc, u8 *p)
{
+ struct se_device *dev = cmd->se_dev;
+
p[0] = 0x08;
p[1] = 0x12;
@@ -903,7 +910,7 @@
return 20;
}
-static int spc_modesense_informational_exceptions(struct se_device *dev, u8 pc, unsigned char *p)
+static int spc_modesense_informational_exceptions(struct se_cmd *cmd, u8 pc, unsigned char *p)
{
p[0] = 0x1c;
p[1] = 0x0a;
@@ -919,7 +926,7 @@
static struct {
uint8_t page;
uint8_t subpage;
- int (*emulate)(struct se_device *, u8, unsigned char *);
+ int (*emulate)(struct se_cmd *, u8, unsigned char *);
} modesense_handlers[] = {
{ .page = 0x01, .subpage = 0x00, .emulate = spc_modesense_rwrecovery },
{ .page = 0x08, .subpage = 0x00, .emulate = spc_modesense_caching },
@@ -1057,7 +1064,7 @@
* the only two possibilities).
*/
if ((modesense_handlers[i].subpage & ~subpage) == 0) {
- ret = modesense_handlers[i].emulate(dev, pc, &buf[length]);
+ ret = modesense_handlers[i].emulate(cmd, pc, &buf[length]);
if (!ten && length + ret >= 255)
break;
length += ret;
@@ -1070,7 +1077,7 @@
for (i = 0; i < ARRAY_SIZE(modesense_handlers); ++i)
if (modesense_handlers[i].page == page &&
modesense_handlers[i].subpage == subpage) {
- length += modesense_handlers[i].emulate(dev, pc, &buf[length]);
+ length += modesense_handlers[i].emulate(cmd, pc, &buf[length]);
goto set_length;
}
@@ -1102,7 +1109,6 @@
static sense_reason_t spc_emulate_modeselect(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_dev;
char *cdb = cmd->t_task_cdb;
bool ten = cdb[0] == MODE_SELECT_10;
int off = ten ? 8 : 4;
@@ -1138,7 +1144,7 @@
if (modesense_handlers[i].page == page &&
modesense_handlers[i].subpage == subpage) {
memset(tbuf, 0, SE_MODE_PAGE_BUF);
- length = modesense_handlers[i].emulate(dev, 0, tbuf);
+ length = modesense_handlers[i].emulate(cmd, 0, tbuf);
goto check_contents;
}