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authorMike Christie <michaelc@cs.wisc.edu>2007-05-30 12:57:19 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-06-02 15:34:46 -0400
commit1548271ece9e9312fd5feb41fd58773b56a71d39 (patch)
tree89f990788a619a52c3ba4ecbf5f2a596c5711d04 /include
parent77a23c21aaa723f6b0ffc4a701be8c8e5a32346d (diff)
downloadop-kernel-dev-1548271ece9e9312fd5feb41fd58773b56a71d39.zip
op-kernel-dev-1548271ece9e9312fd5feb41fd58773b56a71d39.tar.gz
[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>
Diffstat (limited to 'include')
-rw-r--r--include/scsi/iscsi_if.h2
-rw-r--r--include/scsi/libiscsi.h7
-rw-r--r--include/scsi/scsi_transport_iscsi.h3
3 files changed, 7 insertions, 5 deletions
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 1a18196..a046a32 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -72,6 +72,8 @@ struct iscsi_uevent {
/* messages u -> k */
struct msg_create_session {
uint32_t initial_cmdsn;
+ uint16_t cmds_max;
+ uint16_t queue_depth;
} c_session;
struct msg_destroy_session {
uint32_t sid;
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 8d48cf8..2f303a3 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -48,9 +48,8 @@ struct iscsi_nopin;
#define debug_scsi(fmt...)
#endif
-#define ISCSI_XMIT_CMDS_MAX 128 /* must be power of 2 */
-#define ISCSI_MGMT_CMDS_MAX 32 /* must be power of 2 */
-#define ISCSI_CONN_MAX 1
+#define ISCSI_DEF_XMIT_CMDS_MAX 128 /* must be power of 2 */
+#define ISCSI_MGMT_CMDS_MAX 16 /* must be power of 2 */
#define ISCSI_MGMT_ITT_OFFSET 0xa00
@@ -268,7 +267,7 @@ extern int iscsi_host_get_param(struct Scsi_Host *shost,
*/
extern struct iscsi_cls_session *
iscsi_session_setup(struct iscsi_transport *, struct scsi_transport_template *,
- int, int, uint32_t, uint32_t *);
+ uint16_t, uint16_t, int, int, uint32_t, uint32_t *);
extern void iscsi_session_teardown(struct iscsi_cls_session *);
extern struct iscsi_session *class_to_transport_session(struct iscsi_cls_session *);
extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index abc4068..706c0cd 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -90,7 +90,8 @@ struct iscsi_transport {
unsigned int max_conn;
unsigned int max_cmd_len;
struct iscsi_cls_session *(*create_session) (struct iscsi_transport *it,
- struct scsi_transport_template *t, uint32_t sn, uint32_t *hn);
+ struct scsi_transport_template *t, uint16_t, uint16_t,
+ uint32_t sn, uint32_t *hn);
void (*destroy_session) (struct iscsi_cls_session *session);
struct iscsi_cls_conn *(*create_conn) (struct iscsi_cls_session *sess,
uint32_t cid);
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