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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>
This commit is contained in:
Sagi Grimberg 2014-03-05 19:43:43 +02:00 committed by Roland Dreier
parent 65198d6b84
commit 73bc06b7ed
3 changed files with 9 additions and 5 deletions
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8
drivers/infiniband/ulp/iser/iscsi_iser.h
View File

@ -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 {

4
drivers/infiniband/ulp/iser/iser_memory.c
View File

@ -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;

2
drivers/infiniband/ulp/iser/iser_verbs.c
View File

@ -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;