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path: root/drivers/target
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-rw-r--r--drivers/target/iscsi/iscsi_target_configfs.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 2704daf6ba74..13e9e715ad2e 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -125,8 +125,87 @@ out:
TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
+static ssize_t lio_target_np_show_iser(
+ struct se_tpg_np *se_tpg_np,
+ char *page)
+{
+ struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
+ struct iscsi_tpg_np, se_tpg_np);
+ struct iscsi_tpg_np *tpg_np_iser;
+ ssize_t rb;
+
+ tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
+ if (tpg_np_iser)
+ rb = sprintf(page, "1\n");
+ else
+ rb = sprintf(page, "0\n");
+
+ return rb;
+}
+
+static ssize_t lio_target_np_store_iser(
+ struct se_tpg_np *se_tpg_np,
+ const char *page,
+ size_t count)
+{
+ struct iscsi_np *np;
+ struct iscsi_portal_group *tpg;
+ struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
+ struct iscsi_tpg_np, se_tpg_np);
+ struct iscsi_tpg_np *tpg_np_iser = NULL;
+ char *endptr;
+ u32 op;
+ int rc;
+
+ op = simple_strtoul(page, &endptr, 0);
+ if ((op != 1) && (op != 0)) {
+ pr_err("Illegal value for tpg_enable: %u\n", op);
+ return -EINVAL;
+ }
+ np = tpg_np->tpg_np;
+ if (!np) {
+ pr_err("Unable to locate struct iscsi_np from"
+ " struct iscsi_tpg_np\n");
+ return -EINVAL;
+ }
+
+ tpg = tpg_np->tpg;
+ if (iscsit_get_tpg(tpg) < 0)
+ return -EINVAL;
+
+ if (op) {
+ int rc = request_module("ib_isert");
+ if (rc != 0)
+ pr_warn("Unable to request_module for ib_isert\n");
+
+ tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
+ np->np_ip, tpg_np, ISCSI_INFINIBAND);
+ if (!tpg_np_iser || IS_ERR(tpg_np_iser))
+ goto out;
+ } else {
+ tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
+ if (!tpg_np_iser)
+ goto out;
+
+ rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
+ if (rc < 0)
+ goto out;
+ }
+
+ printk("lio_target_np_store_iser() done, op: %d\n", op);
+
+ iscsit_put_tpg(tpg);
+ return count;
+out:
+ iscsit_put_tpg(tpg);
+ return -EINVAL;
+}
+
+TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
+
static struct configfs_attribute *lio_target_portal_attrs[] = {
&lio_target_np_sctp.attr,
+ &lio_target_np_iser.attr,
NULL,
};