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Added support for persistent reservations.

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1747 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2010-06-05 18:29:57 +00:00
parent a66ac34685
commit 7268591baf
1 changed files with 49 additions and 1 deletions
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srpt/src/ib_srpt.c
+49 -1
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@@ -2901,6 +2901,53 @@ static void srpt_tsk_mgmt_done(struct scst_mgmt_cmd *mcmnd)
kfree(mgmt_ioctx);
}
/**
* srpt_get_initiator_port_transport_id() - SCST TransportID callback function.
*
* See also SPC-3, section 7.5.4.5, TransportID for initiator ports using SRP.
*/
static int srpt_get_initiator_port_transport_id(struct scst_session *scst_sess,
uint8_t **transport_id)
{
struct srpt_rdma_ch *ch;
struct spc_rdma_transport_id {
uint8_t protocol_identifier;
uint8_t reserved[7];
uint8_t i_port_id[16];
};
struct spc_rdma_transport_id *tr_id;
int res;
TRACE_ENTRY();
if (!scst_sess) {
res = SCSI_TRANSPORTID_PROTOCOLID_SRP;
goto out;
}
ch = scst_sess_get_tgt_priv(scst_sess);
BUG_ON(!ch);
BUILD_BUG_ON(sizeof(*tr_id) != 24);
tr_id = kzalloc(sizeof(struct spc_rdma_transport_id), GFP_KERNEL);
if (!tr_id) {
PRINT_ERROR("%s", "Allocation of TransportID failed");
res = -ENOMEM;
goto out;
}
res = 0;
tr_id->protocol_identifier = SCSI_TRANSPORTID_PROTOCOLID_SRP;
memcpy(tr_id->i_port_id, ch->i_port_id, sizeof(ch->i_port_id));
*transport_id = (uint8_t *)tr_id;
out:
TRACE_EXIT_RES(res);
return res;
}
/**
* srpt_on_free_cmd() - SCST on_free_cmd callback.
*
@@ -3022,7 +3069,8 @@ static struct scst_tgt_template srpt_template = {
.rdy_to_xfer = srpt_rdy_to_xfer,
.on_hw_pending_cmd_timeout = srpt_pending_cmd_timeout,
.on_free_cmd = srpt_on_free_cmd,
.task_mgmt_fn_done = srpt_tsk_mgmt_done
.task_mgmt_fn_done = srpt_tsk_mgmt_done,
.get_initiator_port_transport_id = srpt_get_initiator_port_transport_id,
};
/**