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authorNicholas Bellinger <nab@linux-iscsi.org>2012-05-30 14:47:18 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2012-06-12 21:38:42 -0700
commite86487e035a33709e5161e50b93e7dce21853665 (patch)
treee7a0ac4e60e0323edab887eaa58074adcde286c8
parentdec1fb1a225fb0d0c2939977f49acbf32e630a8f (diff)
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target/pscsi: Only emulate REPORT_LUNS for passthrough
This patch changes back the pSCSI backend to follow pre 3.6-queue code to passthrough SPC-3 persistent reservations + SPC-2 legacy reservation handling to the underlying LLD / physical hardware. For folks who really need this for their own SPC-3 emulation logic, avoid changing the functionality of this beyond what is exported for REPORT_LUNS for existing code, and to avoid problems with SPC-3 PR/ALUA as INQUIRY EVPD=0x83 emulation needs to be in place in order for this to work as expected with spc_parse_cdb() code.. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
-rw-r--r--drivers/target/target_core_pscsi.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 9a776cc..cb4c6b1 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -1061,18 +1061,12 @@ static int pscsi_parse_cdb(struct se_cmd *cmd)
pscsi_clear_cdb_lun(cdb);
/*
- * For REPORT LUNS we always need to emulate the respone, and for everything
- * related to persistent reservations and ALUA we might optionally use our
- * handlers before passing on the command to the physical hardware.
+ * For REPORT LUNS we always need to emulate the response, for everything
+ * else the default for pSCSI is to pass the command to the underlying
+ * LLD / physical hardware.
*/
switch (cdb[0]) {
case REPORT_LUNS:
- case PERSISTENT_RESERVE_IN:
- case PERSISTENT_RESERVE_OUT:
- case RELEASE:
- case RELEASE_10:
- case RESERVE:
- case RESERVE_10:
ret = spc_parse_cdb(cmd, &dummy_size);
if (ret)
return ret;