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authorChristoph Hellwig <hch@infradead.org>2012-06-17 18:40:52 -0400
committerNicholas Bellinger <nab@linux-iscsi.org>2012-07-16 17:29:12 -0700
commit0c2ad7d1132d8b089b1d37875917858e03610019 (patch)
treee86cc118497605026a15c0e97630c57aeb625793 /drivers/target/target_core_sbc.c
parente1306bdab3af8bef620990a99e613f99eb30065c (diff)
target: add struct spc_ops + initial ->execute_rw pointer usage
Remove the execute_cmd method in struct se_subsystem_api, and always use the one directly in struct se_cmd. To make life simpler for SBC virtual backends a struct spc_ops that is passed to sbc_parse_cmd is added. For now it only contains an execute_rw member, but more will follow with the subsequent commits. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_sbc.c')
-rw-r--r--drivers/target/target_core_sbc.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index a5bd0c0eba0..da441b2782c 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -395,7 +395,7 @@ out:
kfree(buf);
}
-int sbc_parse_cdb(struct se_cmd *cmd)
+int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops)
{
struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
struct se_device *dev = cmd->se_dev;
@@ -409,26 +409,31 @@ int sbc_parse_cdb(struct se_cmd *cmd)
sectors = transport_get_sectors_6(cdb);
cmd->t_task_lba = transport_lba_21(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case READ_10:
sectors = transport_get_sectors_10(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case READ_12:
sectors = transport_get_sectors_12(cdb);
cmd->t_task_lba = transport_lba_32(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case READ_16:
sectors = transport_get_sectors_16(cdb);
cmd->t_task_lba = transport_lba_64(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case WRITE_6:
sectors = transport_get_sectors_6(cdb);
cmd->t_task_lba = transport_lba_21(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case WRITE_10:
case WRITE_VERIFY:
@@ -437,6 +442,7 @@ int sbc_parse_cdb(struct se_cmd *cmd)
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case WRITE_12:
sectors = transport_get_sectors_12(cdb);
@@ -444,6 +450,7 @@ int sbc_parse_cdb(struct se_cmd *cmd)
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case WRITE_16:
sectors = transport_get_sectors_16(cdb);
@@ -451,6 +458,7 @@ int sbc_parse_cdb(struct se_cmd *cmd)
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
+ cmd->execute_cmd = ops->execute_rw;
break;
case XDWRITEREAD_10:
if ((cmd->data_direction != DMA_TO_DEVICE) ||
@@ -464,6 +472,7 @@ int sbc_parse_cdb(struct se_cmd *cmd)
/*
* Setup BIDI XOR callback to be run after I/O completion.
*/
+ cmd->execute_cmd = ops->execute_rw;
cmd->transport_complete_callback = &xdreadwrite_callback;
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;
@@ -486,6 +495,7 @@ int sbc_parse_cdb(struct se_cmd *cmd)
* Setup BIDI XOR callback to be run during after I/O
* completion.
*/
+ cmd->execute_cmd = ops->execute_rw;
cmd->transport_complete_callback = &xdreadwrite_callback;
if (cdb[1] & 0x8)
cmd->se_cmd_flags |= SCF_FUA;