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authorNicholas Bellinger <nab@linux-iscsi.org>2011-07-26 17:48:43 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2011-08-22 19:25:35 +0000
commit052605c6caa3e1edf8eee8fe5fe6d53f5721f39a (patch)
tree87997618fff7f63a4c5bef8a6a093d522d424266 /drivers/target/target_core_cdb.c
parenteb39d34004888afcc0a44d9c36383cd69fa3b3b9 (diff)
target: Make standard INQUIRY return 'not connected' for tpg_virt_lun0
This patch changes target_emulate_inquiry_std() to set the 'not connected' (0x35) bit in standard INQUIRY response data when we are processing a request to a virtual LUN=0 mapping from struct se_device *g_lun0_dev that have been setup for us in transport_lookup_cmd_lun(). This addresses an issue where qla2xxx FC clients need to be able to create demo-mode I_T FC Nexuses by default, but should not be exposing the default set of TPG LUNs to all FC clients. This includes adding an new optional target_core_fabric_ops->tpg_check_demo_mode_login_only() caller to allow demo_mode nexuses to skip the old default of bulding a demo-mode MappedLUNs list via core_tpg_add_node_to_devs(). (roland: Add missing tpg_check_demo_mode_login_only check in core_dev_add_lun) Reported-by: Roland Dreier <roland@purestorage.com> Cc: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
Diffstat (limited to 'drivers/target/target_core_cdb.c')
-rw-r--r--drivers/target/target_core_cdb.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 8ae09a1bdf7..d095408dbd5 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -67,6 +67,7 @@ target_emulate_inquiry_std(struct se_cmd *cmd)
{
struct se_lun *lun = cmd->se_lun;
struct se_device *dev = cmd->se_dev;
+ struct se_portal_group *tpg = lun->lun_sep->sep_tpg;
unsigned char *buf;
/*
@@ -81,9 +82,13 @@ target_emulate_inquiry_std(struct se_cmd *cmd)
buf = transport_kmap_first_data_page(cmd);
- buf[0] = dev->transport->get_device_type(dev);
- if (buf[0] == TYPE_TAPE)
- buf[1] = 0x80;
+ if (dev == tpg->tpg_virt_lun0.lun_se_dev) {
+ buf[0] = 0x3f; /* Not connected */
+ } else {
+ buf[0] = dev->transport->get_device_type(dev);
+ if (buf[0] == TYPE_TAPE)
+ buf[1] = 0x80;
+ }
buf[2] = dev->transport->get_device_rev(dev);
/*