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[SCSI] IB/iser: Add Discovery support

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To run discovery over iSER we need to advertize the CAP_TEXT_NEGO capability
towards user space. Also need to make sure the login RX buffer is posted when
SendTargets TEXT PDUs are sent. For that end, we use a setting of the
ISCSI_PARAM_DISCOVERY_SESS iscsi param as an indication that this is
discovery session.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Or Gerlitz
2013-08-08 13:44:29 +03:00
committed by James Bottomley
parent e1e819cc96
commit 6a06a4b8cf
3 changed files with 17 additions and 2 deletions
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5
drivers/scsi/libiscsi.c
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@@ -3170,6 +3170,7 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
{
struct iscsi_conn *conn = cls_conn->dd_data;
struct iscsi_session *session = conn->session;
int val;
switch(param) {
case ISCSI_PARAM_FAST_ABORT:
@@ -3264,6 +3265,10 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn,
case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
return iscsi_switch_str_param(&session->discovery_parent_type,
buf);
case ISCSI_PARAM_DISCOVERY_SESS:
sscanf(buf, "%d", &val);
session->discovery_sess = !!val;
break;
default:
return -ENOSYS;
}