IB/isert: pass scatterlist instead of cmd to fast_reg_mr routine
This routine may help for protection registration as well.
This patch does not change any functionality.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 9ef9193..421182b 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -2169,26 +2169,22 @@
static int
isert_fast_reg_mr(struct fast_reg_descriptor *fr_desc,
- struct isert_cmd *isert_cmd, struct isert_conn *isert_conn,
- struct ib_sge *ib_sge, u32 offset, unsigned int data_len)
+ struct isert_conn *isert_conn, struct scatterlist *sg_start,
+ struct ib_sge *ib_sge, u32 sg_nents, u32 offset,
+ unsigned int data_len)
{
- struct iscsi_cmd *cmd = isert_cmd->iscsi_cmd;
struct ib_device *ib_dev = isert_conn->conn_cm_id->device;
- struct scatterlist *sg_start;
- u32 sg_off, page_off;
struct ib_send_wr fr_wr, inv_wr;
struct ib_send_wr *bad_wr, *wr = NULL;
+ int ret, pagelist_len;
+ u32 page_off;
u8 key;
- int ret, sg_nents, pagelist_len;
- sg_off = offset / PAGE_SIZE;
- sg_start = &cmd->se_cmd.t_data_sg[sg_off];
- sg_nents = min_t(unsigned int, cmd->se_cmd.t_data_nents - sg_off,
- ISCSI_ISER_SG_TABLESIZE);
+ sg_nents = min_t(unsigned int, sg_nents, ISCSI_ISER_SG_TABLESIZE);
page_off = offset % PAGE_SIZE;
- pr_debug("Cmd: %p use fr_desc %p sg_nents %d sg_off %d offset %u\n",
- isert_cmd, fr_desc, sg_nents, sg_off, offset);
+ pr_debug("Use fr_desc %p sg_nents %d offset %u\n",
+ fr_desc, sg_nents, offset);
pagelist_len = isert_map_fr_pagelist(ib_dev, sg_start, sg_nents,
&fr_desc->data_frpl->page_list[0]);
@@ -2257,9 +2253,9 @@
if (wr->iser_ib_op == ISER_IB_RDMA_WRITE) {
data_left = se_cmd->data_length;
} else {
- sg_off = cmd->write_data_done / PAGE_SIZE;
- data_left = se_cmd->data_length - cmd->write_data_done;
offset = cmd->write_data_done;
+ sg_off = offset / PAGE_SIZE;
+ data_left = se_cmd->data_length - cmd->write_data_done;
isert_cmd->tx_desc.isert_cmd = isert_cmd;
}
@@ -2323,8 +2319,8 @@
spin_unlock_irqrestore(&isert_conn->conn_lock, flags);
wr->fr_desc = fr_desc;
- ret = isert_fast_reg_mr(fr_desc, isert_cmd, isert_conn,
- ib_sge, offset, data_len);
+ ret = isert_fast_reg_mr(fr_desc, isert_conn, sg_start,
+ ib_sge, sg_nents, offset, data_len);
if (ret) {
list_add_tail(&fr_desc->list, &isert_conn->conn_fr_pool);
goto unmap_sg;