[SCSI] libiscsi: make can_queue configurable
This patch allows us to set can_queue and cmds_per_lun from userspace
when we create the session/host. From there we can set it on a per
target basis. The patch fully converts iscsi_tcp, but only hooks
up ib_iser for cmd_per_lun since it currently has a lots of preallocations
based on can_queue.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 8edcfddc..eca4d61 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -2114,6 +2114,7 @@
static struct iscsi_cls_session *
iscsi_tcp_session_create(struct iscsi_transport *iscsit,
struct scsi_transport_template *scsit,
+ uint16_t cmds_max, uint16_t qdepth,
uint32_t initial_cmdsn, uint32_t *hostno)
{
struct iscsi_cls_session *cls_session;
@@ -2121,7 +2122,7 @@
uint32_t hn;
int cmd_i;
- cls_session = iscsi_session_setup(iscsit, scsit,
+ cls_session = iscsi_session_setup(iscsit, scsit, cmds_max, qdepth,
sizeof(struct iscsi_tcp_cmd_task),
sizeof(struct iscsi_tcp_mgmt_task),
initial_cmdsn, &hn);
@@ -2164,7 +2165,7 @@
.name = "iSCSI Initiator over TCP/IP",
.queuecommand = iscsi_queuecommand,
.change_queue_depth = iscsi_change_queue_depth,
- .can_queue = ISCSI_XMIT_CMDS_MAX - 1,
+ .can_queue = ISCSI_DEF_XMIT_CMDS_MAX - 1,
.sg_tablesize = ISCSI_SG_TABLESIZE,
.max_sectors = 0xFFFF,
.cmd_per_lun = ISCSI_DEF_CMD_PER_LUN,