diff options
| author | Christoph Hellwig <hch@infradead.org> | 2012-05-20 11:59:17 -0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-06-12 21:38:41 -0700 |
| commit | 3705d25e94d8f5601e7d425098d96c173c3a9eae (patch) | |
| tree | 860d6b9529f5ee534f7dea91eb65c966893f2094 | |
| parent | e05d46b92677434d6ea28ed16172f1a892585e47 (diff) | |
| download | linux-3705d25e94d8f5601e7d425098d96c173c3a9eae.tar.gz linux-3705d25e94d8f5601e7d425098d96c173c3a9eae.tar.xz linux-3705d25e94d8f5601e7d425098d96c173c3a9eae.zip | |
target: move transport_generic_prepare_cdb into pscsi
The virtual drivers don't need to clear cdb fields they never look at, so move
this code into the pscsi backend.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/target_core_pscsi.c | 26 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 29 |
2 files changed, 26 insertions, 29 deletions
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 099c59d31b1f..9a776cc03d67 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -1022,6 +1022,30 @@ fail: return -ENOMEM; } +/* + * Clear a lun set in the cdb if the initiator talking to use spoke + * and old standards version, as we can't assume the underlying device + * won't choke up on it. + */ +static inline void pscsi_clear_cdb_lun(unsigned char *cdb) +{ + switch (cdb[0]) { + case READ_10: /* SBC - RDProtect */ + case READ_12: /* SBC - RDProtect */ + case READ_16: /* SBC - RDProtect */ + case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ + case VERIFY: /* SBC - VRProtect */ + case VERIFY_16: /* SBC - VRProtect */ + case WRITE_VERIFY: /* SBC - VRProtect */ + case WRITE_VERIFY_12: /* SBC - VRProtect */ + case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ + break; + default: + cdb[1] &= 0x1f; /* clear logical unit number */ + break; + } +} + static int pscsi_parse_cdb(struct se_cmd *cmd) { unsigned char *cdb = cmd->t_task_cdb; @@ -1034,6 +1058,8 @@ static int pscsi_parse_cdb(struct se_cmd *cmd) return -EINVAL; } + 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 diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index bdb93a74e9ba..2469a17a6690 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1309,34 +1309,6 @@ out: } EXPORT_SYMBOL(transport_add_device_to_core_hba); -/* transport_generic_prepare_cdb(): - * - * Since the Initiator sees iSCSI devices as LUNs, the SCSI CDB will - * contain the iSCSI LUN in bits 7-5 of byte 1 as per SAM-2. - * The point of this is since we are mapping iSCSI LUNs to - * SCSI Target IDs having a non-zero LUN in the CDB will throw the - * devices and HBAs for a loop. - */ -static inline void transport_generic_prepare_cdb( - unsigned char *cdb) -{ - switch (cdb[0]) { - case READ_10: /* SBC - RDProtect */ - case READ_12: /* SBC - RDProtect */ - case READ_16: /* SBC - RDProtect */ - case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ - case VERIFY: /* SBC - VRProtect */ - case VERIFY_16: /* SBC - VRProtect */ - case WRITE_VERIFY: /* SBC - VRProtect */ - case WRITE_VERIFY_12: /* SBC - VRProtect */ - case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ - break; - default: - cdb[1] &= 0x1f; /* clear logical unit number */ - break; - } -} - int target_cmd_size_check(struct se_cmd *cmd, unsigned int size) { struct se_device *dev = cmd->se_dev; @@ -1465,7 +1437,6 @@ int target_setup_cmd_from_cdb( unsigned long flags; int ret; - transport_generic_prepare_cdb(cdb); /* * Ensure that the received CDB is less than the max (252 + 8) bytes * for VARIABLE_LENGTH_CMD |