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| author | Mike Christie <michaelc@cs.wisc.edu> | 2007-05-30 21:57:19 +0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-06-02 23:34:46 +0400 |
| commit | 1548271ece9e9312fd5feb41fd58773b56a71d39 (patch) | |
| tree | 89f990788a619a52c3ba4ecbf5f2a596c5711d04 /drivers/infiniband/ulp/iser/iscsi_iser.c | |
| parent | 77a23c21aaa723f6b0ffc4a701be8c8e5a32346d (diff) | |
| download | linux-1548271ece9e9312fd5feb41fd58773b56a71d39.tar.xz | |
[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 'drivers/infiniband/ulp/iser/iscsi_iser.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 9782190a9ee5..bed583c426e6 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -373,7 +373,8 @@ static struct iscsi_transport iscsi_iser_transport; static struct iscsi_cls_session * iscsi_iser_session_create(struct iscsi_transport *iscsit, struct scsi_transport_template *scsit, - uint32_t initial_cmdsn, uint32_t *hostno) + uint16_t cmds_max, uint16_t qdepth, + uint32_t initial_cmdsn, uint32_t *hostno) { struct iscsi_cls_session *cls_session; struct iscsi_session *session; @@ -384,7 +385,13 @@ iscsi_iser_session_create(struct iscsi_transport *iscsit, struct iscsi_iser_cmd_task *iser_ctask; struct iser_desc *desc; + /* + * we do not support setting can_queue cmd_per_lun from userspace yet + * because we preallocate so many resources + */ cls_session = iscsi_session_setup(iscsit, scsit, + ISCSI_DEF_XMIT_CMDS_MAX, + ISCSI_MAX_CMD_PER_LUN, sizeof(struct iscsi_iser_cmd_task), sizeof(struct iser_desc), initial_cmdsn, &hn); @@ -543,7 +550,7 @@ iscsi_iser_ep_disconnect(__u64 ep_handle) static struct scsi_host_template iscsi_iser_sht = { .name = "iSCSI Initiator over iSER, v." DRV_VER, .queuecommand = iscsi_queuecommand, - .can_queue = ISCSI_XMIT_CMDS_MAX - 1, + .can_queue = ISCSI_DEF_XMIT_CMDS_MAX - 1, .sg_tablesize = ISCSI_ISER_SG_TABLESIZE, .max_sectors = 1024, .cmd_per_lun = ISCSI_MAX_CMD_PER_LUN, |