[SCSI] qla2xxx: T10 DIF support added.

Signed-off-by: Duane Grigsby <duane.grigsby@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index ad53c6455556..84c2fea154d2 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -67,3 +67,19 @@ qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
         return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
             loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
 }
+
+static inline void
+qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp)
+{
+        struct dsd_dma *dsd_ptr, *tdsd_ptr;
+
+        /* clean up allocated prev pool */
+        list_for_each_entry_safe(dsd_ptr, tdsd_ptr,
+            &((struct crc_context *)sp->ctx)->dsd_list, list) {
+                dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr,
+                    dsd_ptr->dsd_list_dma);
+                list_del(&dsd_ptr->list);
+                kfree(dsd_ptr);
+        }
+        INIT_LIST_HEAD(&((struct crc_context *)sp->ctx)->dsd_list);
+}