This is a note to let you know that I've just added the patch titled
IB/isert: Align target max I/O size to initiator size
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-isert-align-target-max-i-o-size-to-initiator-size.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 627d763841fe95c992528200b1391f62973d74f2
Author: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
Date: Mon May 24 11:52:15 2021 +0300
IB/isert: Align target max I/O size to initiator size
[ Upstream commit 109d19a5eb3ddbdb87c43bfd4bcf644f4569da64 ]
Since the Linux iser initiator default max I/O size set to 512KB and since
there is no handshake procedure for this size in iser protocol, set the
default max IO size of the target to 512KB as well.
For changing the default values, there is a module parameter for both
drivers.
Link: https://lore.kernel.org/r/20210524085215.29005-1-mgurtovoy@xxxxxxxxxx
Reviewed-by: Alaa Hleihel <alaa@xxxxxxxxxx>
Reviewed-by: Israel Rukshin <israelr@xxxxxxxxxx>
Signed-off-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
Acked-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index e653c83f8a35..edea37da8a5b 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -35,10 +35,10 @@ static const struct kernel_param_ops sg_tablesize_ops = {
.get = param_get_int,
};
-static int isert_sg_tablesize = ISCSI_ISER_DEF_SG_TABLESIZE;
+static int isert_sg_tablesize = ISCSI_ISER_MIN_SG_TABLESIZE;
module_param_cb(sg_tablesize, &sg_tablesize_ops, &isert_sg_tablesize, 0644);
MODULE_PARM_DESC(sg_tablesize,
- "Number of gather/scatter entries in a single scsi command, should >= 128 (default: 256, max: 4096)");
+ "Number of gather/scatter entries in a single scsi command, should >= 128 (default: 128, max: 4096)");
static DEFINE_MUTEX(device_list_mutex);
static LIST_HEAD(device_list);
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
index 6c5af13db4e0..ca8cfebe26ca 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.h
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -65,9 +65,6 @@
*/
#define ISER_RX_SIZE (ISCSI_DEF_MAX_RECV_SEG_LEN + 1024)
-/* Default I/O size is 1MB */
-#define ISCSI_ISER_DEF_SG_TABLESIZE 256
-
/* Minimum I/O size is 512KB */
#define ISCSI_ISER_MIN_SG_TABLESIZE 128
