IB/iser: Replace fastreg descriptor valid bool with indicators container

In T10-PI support we will have memory keys for protection buffers and
signature transactions.  We prefer to compact indicators rather than
keeping multiple bools.

This commit does not change any functionality.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Alex Tabachnik <alext@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

3 files changed, 9 insertions, 5 deletions

diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index b4290f509a39..56607140ff3a 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -280,13 +280,17 @@ struct iser_device {
                                                             enum iser_data_dir cmd_dir);
 };
 
+enum iser_reg_indicator {
+        ISER_DATA_KEY_VALID = 1 << 0,
+};
+
 struct fast_reg_descriptor {
         struct list_head                  list;
         /* For fast registration - FRWR */
         struct ib_mr                     *data_mr;
         struct ib_fast_reg_page_list     *data_frpl;
-        /* Valid for fast registration flag */
-        bool                              valid;
+        /* registration indicators container */
+        u8                                reg_indicators;
 };
 
 struct iser_conn {
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index d25587e2f296..a7a0d3e8f822 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -479,7 +479,7 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
                 return -EINVAL;
         }
 
-        if (!desc->valid) {
+        if (!(desc->reg_indicators & ISER_DATA_KEY_VALID)) {
                 memset(&inv_wr, 0, sizeof(inv_wr));
                 inv_wr.wr_id = ISER_FASTREG_LI_WRID;
                 inv_wr.opcode = IB_WR_LOCAL_INV;
@@ -514,7 +514,7 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
                 iser_err("fast registration failed, ret:%d\n", ret);
                 return ret;
         }
-        desc->valid = false;
+        desc->reg_indicators &= ~ISER_DATA_KEY_VALID;
 
         sge->lkey = desc->data_mr->lkey;
         sge->addr = desc->data_frpl->page_list[0] + offset;
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 95fcfcac0100..6a5f4245182a 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -296,7 +296,7 @@ iser_create_fastreg_desc(struct ib_device *ib_device, struct ib_pd *pd,
         }
         iser_info("Create fr_desc %p page_list %p\n",
                   desc, desc->data_frpl->page_list);
-        desc->valid = true;
+        desc->reg_indicators |= ISER_DATA_KEY_VALID;
 
         return 0;