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target: Subsume se_port + t10_alua_tg_pt_gp_member into se_lun

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This patch eliminates all se_port + t10_alua_tg_pt_gp_member usage,
and converts current users to direct se_lun pointer dereference.

This includes the removal of core_export_port(), core_release_port()
core_dev_export() and core_dev_unexport().  Along with conversion
of special case se_lun pointer dereference within PR ALL_TG_PT=1
and ALUA access state transition UNIT_ATTENTION handling.

Also, update core_enable_device_list_for_node() to reference the
new per se_lun->lun_deve_list when creating a new entry, or
replacing an existing one via RCU.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2015-05-25 21:33:08 -07:00
committed by Nicholas Bellinger
parent b3eeea6619
commit adf653f92f
13 changed files with 461 additions and 810 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/target/target_core_xcopy.c
View File

@@ -348,8 +348,7 @@ struct xcopy_pt_cmd {
unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
};
static struct se_port xcopy_pt_port;
static struct se_portal_group xcopy_pt_tpg;
struct se_portal_group xcopy_pt_tpg;
static struct se_session xcopy_pt_sess;
static struct se_node_acl xcopy_pt_nacl;
@@ -439,17 +438,11 @@ int target_xcopy_setup_pt(void)
return -ENOMEM;
}
memset(&xcopy_pt_port, 0, sizeof(struct se_port));
INIT_LIST_HEAD(&xcopy_pt_port.sep_alua_list);
INIT_LIST_HEAD(&xcopy_pt_port.sep_list);
mutex_init(&xcopy_pt_port.sep_tg_pt_md_mutex);
memset(&xcopy_pt_tpg, 0, sizeof(struct se_portal_group));
INIT_LIST_HEAD(&xcopy_pt_tpg.se_tpg_node);
INIT_LIST_HEAD(&xcopy_pt_tpg.acl_node_list);
INIT_LIST_HEAD(&xcopy_pt_tpg.tpg_sess_list);
xcopy_pt_port.sep_tpg = &xcopy_pt_tpg;
xcopy_pt_tpg.se_tpg_tfo = &xcopy_pt_tfo;
memset(&xcopy_pt_nacl, 0, sizeof(struct se_node_acl));
@@ -490,10 +483,6 @@ static void target_xcopy_setup_pt_port(
*/
if (remote_port) {
xpt_cmd->remote_port = remote_port;
pt_cmd->se_lun->lun_sep = &xcopy_pt_port;
pr_debug("Setup emulated remote DEST xcopy_pt_port: %p to"
" cmd->se_lun->lun_sep for X-COPY data PUSH\n",
pt_cmd->se_lun->lun_sep);
} else {
pt_cmd->se_lun = ec_cmd->se_lun;
pt_cmd->se_dev = ec_cmd->se_dev;
@@ -513,10 +502,6 @@ static void target_xcopy_setup_pt_port(
*/
if (remote_port) {
xpt_cmd->remote_port = remote_port;
pt_cmd->se_lun->lun_sep = &xcopy_pt_port;
pr_debug("Setup emulated remote SRC xcopy_pt_port: %p to"
" cmd->se_lun->lun_sep for X-COPY data PULL\n",
pt_cmd->se_lun->lun_sep);
} else {
pt_cmd->se_lun = ec_cmd->se_lun;
pt_cmd->se_dev = ec_cmd->se_dev;