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authorSagi Grimberg <sagig@mellanox.com>2014-06-11 12:09:58 +0300
committerNicholas Bellinger <nab@linux-iscsi.org>2014-06-11 13:06:45 -0700
commitd77e65350f2d82dfa0557707d505711f5a43c8fd (patch)
tree04adddbd63d60ebdaae4ee5a7c320dd6b9412d76 /drivers/infiniband
parent8846bab180fa2bcfe02d4ba5288fbaba12c8f4f3 (diff)
downloadblackbird-op-linux-d77e65350f2d82dfa0557707d505711f5a43c8fd.tar.gz
blackbird-op-linux-d77e65350f2d82dfa0557707d505711f5a43c8fd.zip
libiscsi, iser: Adjust data_length to include protection information
In case protection information exists over the wire iscsi header data length is required to include it. Use protection information aware scsi helpers to set the correct transfer length. In order to avoid breakage, remove iser transfer length checks for each task as they are not always true and somewhat redundant anyway. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Cc: stable@vger.kernel.org # 3.15+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/iser/iser_initiator.c34
1 files changed, 10 insertions, 24 deletions
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 2e2d903db838..8d44a4060634 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -41,11 +41,11 @@
#include "iscsi_iser.h"
/* Register user buffer memory and initialize passive rdma
- * dto descriptor. Total data size is stored in
- * iser_task->data[ISER_DIR_IN].data_len
+ * dto descriptor. Data size is stored in
+ * task->data[ISER_DIR_IN].data_len, Protection size
+ * os stored in task->prot[ISER_DIR_IN].data_len
*/
-static int iser_prepare_read_cmd(struct iscsi_task *task,
- unsigned int edtl)
+static int iser_prepare_read_cmd(struct iscsi_task *task)
{
struct iscsi_iser_task *iser_task = task->dd_data;
@@ -73,14 +73,6 @@ static int iser_prepare_read_cmd(struct iscsi_task *task,
return err;
}
- if (edtl > iser_task->data[ISER_DIR_IN].data_len) {
- iser_err("Total data length: %ld, less than EDTL: "
- "%d, in READ cmd BHS itt: %d, conn: 0x%p\n",
- iser_task->data[ISER_DIR_IN].data_len, edtl,
- task->itt, iser_task->ib_conn);
- return -EINVAL;
- }
-
err = device->iser_reg_rdma_mem(iser_task, ISER_DIR_IN);
if (err) {
iser_err("Failed to set up Data-IN RDMA\n");
@@ -100,8 +92,9 @@ static int iser_prepare_read_cmd(struct iscsi_task *task,
}
/* Register user buffer memory and initialize passive rdma
- * dto descriptor. Total data size is stored in
- * task->data[ISER_DIR_OUT].data_len
+ * dto descriptor. Data size is stored in
+ * task->data[ISER_DIR_OUT].data_len, Protection size
+ * is stored at task->prot[ISER_DIR_OUT].data_len
*/
static int
iser_prepare_write_cmd(struct iscsi_task *task,
@@ -135,14 +128,6 @@ iser_prepare_write_cmd(struct iscsi_task *task,
return err;
}
- if (edtl > iser_task->data[ISER_DIR_OUT].data_len) {
- iser_err("Total data length: %ld, less than EDTL: %d, "
- "in WRITE cmd BHS itt: %d, conn: 0x%p\n",
- iser_task->data[ISER_DIR_OUT].data_len,
- edtl, task->itt, task->conn);
- return -EINVAL;
- }
-
err = device->iser_reg_rdma_mem(iser_task, ISER_DIR_OUT);
if (err != 0) {
iser_err("Failed to register write cmd RDMA mem\n");
@@ -417,11 +402,12 @@ int iser_send_command(struct iscsi_conn *conn,
if (scsi_prot_sg_count(sc)) {
prot_buf->buf = scsi_prot_sglist(sc);
prot_buf->size = scsi_prot_sg_count(sc);
- prot_buf->data_len = sc->prot_sdb->length;
+ prot_buf->data_len = data_buf->data_len >>
+ ilog2(sc->device->sector_size) * 8;
}
if (hdr->flags & ISCSI_FLAG_CMD_READ) {
- err = iser_prepare_read_cmd(task, edtl);
+ err = iser_prepare_read_cmd(task);
if (err)
goto send_command_error;
}
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