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Patch from Gilad H <gilad.public2@gmail.com> adding support for Persistent Reservations to qla_isp driver

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1726 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2010-05-31 18:02:12 +00:00
parent 465b7669c6
commit a76b79d8b5
1 changed files with 52 additions and 1 deletions
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53
qla_isp/linux/isp_scst.c
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@@ -83,6 +83,8 @@
#include <linux/seq_file.h>
#include <linux/kthread.h>
#include <asm/byteorder.h>
#define LOG_PREFIX "qla_isp"
#include <scsi/scsi_host.h>
@@ -288,12 +290,17 @@ alloc_ini(bus_chan_t *bc, uint64_t iid)
GET(7), GET(6), GET(5) , GET(4), GET(3), GET(2), GET(1), GET(0));
#undef GET
nptr->ini_scst_sess = scst_register_session(bc->scst_tgt, 0, ini_name, NULL, NULL, NULL);
/* Set the iid here so the callback to get transport ID will be able to extract it
* to generate the transport ID
*/
nptr->ini_iid = iid;
nptr->ini_scst_sess = scst_register_session(bc->scst_tgt, 0, ini_name, nptr, NULL, NULL);
if (!nptr->ini_scst_sess) {
Eprintk("cannot register SCST session\n");
kfree(nptr);
return (NULL);
}
atomic_inc(&bc->sess_count);
BUS_DBG(bc->bus, "0x%016llx, ++sess_count %d\n", iid, atomic_read(&bc->sess_count));
return (nptr);
@@ -1314,6 +1321,49 @@ isp_task_mgmt_fn_done(struct scst_mgmt_cmd *mgmt_cmd)
(*bp->h.r_action) (QIN_NOTIFY_ACK, ins);
}
int isp_get_initiator_port_transport_id(struct scst_session *scst_sess,
uint8_t **transport_id)
{
ini_t *ini;
int res = 0;
int tr_id_size;
uint8_t *tr_id;
uint64_t iid;
uint64_t *n_port_name;
TRACE_ENTRY();
if (scst_sess == NULL) {
res = SCSI_TRANSPORTID_PROTOCOLID_FCP2;
goto out;
}
TRACE_DBG("Called to get transport ID (iid = %llu)", ini->ini_iid);
ini = (ini_t*)scst_sess_get_tgt_priv(scst_sess);
iid = ini->ini_iid;
tr_id_size = 24;
tr_id = kzalloc(tr_id_size, GFP_KERNEL);
if (tr_id == NULL) {
PRINT_ERROR("Allocation of TrandportID (size %d) failed",
tr_id_size);
res = -ENOMEM;
goto out;
}
n_port_name = (uint64_t*)&tr_id[8];
*n_port_name = __cpu_to_be64(iid);
PRINT_BUFF_FLAG(TRACE_DEBUG, "PR transport ID: 0x%x", tr_id, tr_id_size);
*transport_id = tr_id;
out:
TRACE_EXIT_RES(res);
return res;
}
static DEFINE_MUTEX(proc_mutex);
/*
@@ -1550,6 +1600,7 @@ static struct scst_tgt_template isp_tgt_template =
.task_mgmt_fn_done = isp_task_mgmt_fn_done,
//.report_aen = isp_report_aen,
.get_initiator_port_transport_id = isp_get_initiator_port_transport_id,
};
#ifdef ISP_DAC_SUPPORTED