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Added sysfs support.

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1674 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2010-05-02 08:15:29 +00:00
parent c27387a0f7
commit b19930753a
2 changed files with 60 additions and 0 deletions
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srpt/src/ib_srpt.c
+58
View File
@@ -1894,6 +1894,47 @@ static void srpt_release_channel(struct scst_session *scst_sess)
TRACE_EXIT();
}
#if !defined(CONFIG_SCST_PROC)
/**
* srpt_enable_target() - Allows to enable a target via sysfs.
*/
static int srpt_enable_target(struct scst_tgt *scst_tgt, bool enable)
{
struct srpt_device *sdev = scst_tgt_get_tgt_priv(scst_tgt);
TRACE_DBG("%s target %s", enable ? "Enabling" : "Disabling",
sdev->device->name);
spin_lock_irq(&sdev->spinlock);
sdev->enabled = enable;
spin_unlock_irq(&sdev->spinlock);
return 0;
}
/**
* srpt_is_target_enabled() - Allows to query a targets status via sysfs.
*/
static bool srpt_is_target_enabled(struct scst_tgt *scst_tgt)
{
struct srpt_device *sdev = scst_tgt_get_tgt_priv(scst_tgt);
bool res;
spin_lock_irq(&sdev->spinlock);
res = sdev->enabled;
spin_unlock_irq(&sdev->spinlock);
return res;
}
#else
/**
* srpt_is_target_enabled() - Reports that a target is enabled when using procfs.
*/
static bool srpt_is_target_enabled(struct scst_tgt *scst_tgt)
{
return true;
}
#endif
/**
* srpt_cm_req_recv() - Process the event IB_CM_REQ_RECEIVED.
*
@@ -1959,6 +2000,15 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
goto reject;
}
if (!srpt_is_target_enabled(sdev->scst_tgt)) {
rej->reason =
cpu_to_be32(SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
ret = -EINVAL;
PRINT_ERROR("rejected SRP_LOGIN_REQ because the target %s"
" has not yet been enabled", sdev->device->name);
goto reject;
}
if ((req->req_flags & SRP_MTCH_ACTION) == SRP_MULTICHAN_SINGLE) {
rsp->rsp_flags = SRP_LOGIN_RSP_MULTICHAN_NO_CHAN;
@@ -2964,6 +3014,14 @@ static struct scst_tgt_template srpt_template = {
.name = DRV_NAME,
.sg_tablesize = SRPT_DEF_SG_TABLESIZE,
.max_hw_pending_time = 60/*seconds*/,
#if !defined(CONFIG_SCST_PROC)
.enable_target = srpt_enable_target,
.is_target_enabled = srpt_is_target_enabled,
#endif
#if defined(CONFIG_SCST_DEBUG) || defined(CONFIG_SCST_TRACING)
.default_trace_flags = DEFAULT_SRPT_TRACE_FLAGS,
.trace_flags = &trace_flag,
#endif
.detect = srpt_detect,
.release = srpt_release,
.xmit_response = srpt_xmit_response,
srpt/src/ib_srpt.h
+2
View File
@@ -283,6 +283,7 @@ struct srpt_port {
* @event_handler: per-HCA asynchronous IB event handler.
* @dev: per-port srpt-<portname> device instance.
* @scst_tgt: SCST target information associated with this HCA.
* @enabled: Whether or not this device is considered enabled by SCST.
*/
struct srpt_device {
struct ib_device *device;
@@ -302,6 +303,7 @@ struct srpt_device {
struct device dev;
#endif
struct scst_tgt *scst_tgt;
bool enabled;
};
#endif /* IB_SRPT_H */