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authorRoland Dreier <roland@purestorage.com>2012-08-16 01:35:25 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2012-09-18 04:12:58 +0400
commit9c58b7ddd70dd7bfaac4ca87131f36d10aaba441 (patch)
tree2796f11c283904cef9b38f543e31fed3fea565c7 /Documentation/target
parent2ed772b7b9df0f459308b3cbececc0136076d09e (diff)
downloadlinux-9c58b7ddd70dd7bfaac4ca87131f36d10aaba441.tar.xz
target: Simplify fabric sense data length handling
Every fabric driver has to supply a se_tfo->set_fabric_sense_len() method, just so iSCSI can return an offset of 2. However, every fabric driver is already allocating a sense buffer and passing it into the target core, either via transport_init_se_cmd() or target_submit_cmd(). So instead of having iSCSI pass the start of its sense buffer into the core and then later tell the core to skip the first 2 bytes, it seems easier for iSCSI just to do the offset of 2 when it passes the sense buffer into the core. Then we can drop the se_tfo->set_fabric_sense_len() everywhere, and just add a couple of lines of code to iSCSI to set the sense data length to the beginning of the buffer right before it sends it over the network. (nab: Remove .set_fabric_sense_len usage from tcm_qla2xxx_npiv_ops + change transport_get_sense_buffer to follow v3.6-rc6 code w/o ->set_fabric_sense_len usage) Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'Documentation/target')
-rwxr-xr-xDocumentation/target/tcm_mod_builder.py8
1 files changed, 0 insertions, 8 deletions
diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py
index 13652381cb71..3fe0d812dcec 100755
--- a/Documentation/target/tcm_mod_builder.py
+++ b/Documentation/target/tcm_mod_builder.py
@@ -402,7 +402,6 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += " .queue_data_in = " + fabric_mod_name + "_queue_data_in,\n"
buf += " .queue_status = " + fabric_mod_name + "_queue_status,\n"
buf += " .queue_tm_rsp = " + fabric_mod_name + "_queue_tm_rsp,\n"
- buf += " .set_fabric_sense_len = " + fabric_mod_name + "_set_fabric_sense_len,\n"
buf += " .is_state_remove = " + fabric_mod_name + "_is_state_remove,\n"
buf += " /*\n"
buf += " * Setup function pointers for generic logic in target_core_fabric_configfs.c\n"
@@ -905,13 +904,6 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += "}\n\n"
bufi += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n"
- if re.search('set_fabric_sense_len\)\(', fo):
- buf += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)\n"
- buf += "{\n"
- buf += " return 0;\n"
- buf += "}\n\n"
- bufi += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *, u32);\n"
-
if re.search('is_state_remove\)\(', fo):
buf += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *se_cmd)\n"
buf += "{\n"