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path: root/drivers/target/iscsi/iscsi_target_util.c
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Diffstat (limited to 'drivers/target/iscsi/iscsi_target_util.c')
-rw-r--r--drivers/target/iscsi/iscsi_target_util.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 5784cad16be1..8d85d8cceb42 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -19,6 +19,7 @@
******************************************************************************/
#include <linux/list.h>
+#include <linux/percpu_ida.h>
#include <scsi/scsi_tcq.h>
#include <scsi/iscsi_proto.h>
#include <target/target_core_base.h>
@@ -156,13 +157,15 @@ void iscsit_free_r2ts_from_list(struct iscsi_cmd *cmd)
struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask)
{
struct iscsi_cmd *cmd;
- int priv_size = conn->conn_transport->priv_size;
+ struct se_session *se_sess = conn->sess->se_sess;
+ int size, tag;
- cmd = kzalloc(sizeof(struct iscsi_cmd) + priv_size, gfp_mask);
- if (!cmd) {
- pr_err("Unable to allocate memory for struct iscsi_cmd.\n");
- return NULL;
- }
+ tag = percpu_ida_alloc(&se_sess->sess_tag_pool, gfp_mask);
+ size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size;
+ cmd = (struct iscsi_cmd *)(se_sess->sess_cmd_map + (tag * size));
+ memset(cmd, 0, size);
+
+ cmd->se_cmd.map_tag = tag;
cmd->conn = conn;
INIT_LIST_HEAD(&cmd->i_conn_node);
INIT_LIST_HEAD(&cmd->datain_list);
@@ -678,6 +681,16 @@ void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *conn)
void iscsit_release_cmd(struct iscsi_cmd *cmd)
{
+ struct iscsi_session *sess;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+
+ if (cmd->conn)
+ sess = cmd->conn->sess;
+ else
+ sess = cmd->sess;
+
+ BUG_ON(!sess || !sess->se_sess);
+
kfree(cmd->buf_ptr);
kfree(cmd->pdu_list);
kfree(cmd->seq_list);
@@ -685,7 +698,7 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd)
kfree(cmd->iov_data);
kfree(cmd->text_in_ptr);
- kfree(cmd);
+ percpu_ida_free(&sess->se_sess->sess_tag_pool, se_cmd->map_tag);
}
EXPORT_SYMBOL(iscsit_release_cmd);