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[SCSI] transport_srp: add rport roles attribute

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This adds a 'roles' attribute to rport like transport_fc. The role can
be initiator or target. That is, the initiator driver creates target
remote ports and the target driver creates initiator remote ports.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2007-07-11 15:08:15 +09:00 committed by James Bottomley
parent 3236822b1c
commit aebd5e476e
4 changed files with 35 additions and 1 deletions
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1
drivers/infiniband/ulp/srp/ib_srp.c
View file

@ -1545,6 +1545,7 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
memcpy(ids.port_id, &target->id_ext, 8);
memcpy(ids.port_id + 8, &target->ioc_guid, 8);
ids.roles = SRP_RPORT_ROLE_TARGET;
rport = srp_rport_add(target->scsi_host, &ids);
if (IS_ERR(rport)) {
scsi_remove_host(target->scsi_host);

1
drivers/scsi/ibmvscsi/ibmvscsi.c
View file

@ -1599,6 +1599,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
/* we don't have a proper target_port_id so let's use the fake one */
memcpy(ids.port_id, hostdata->madapter_info.partition_name,
sizeof(ids.port_id));
ids.roles = SRP_RPORT_ROLE_TARGET;
rport = srp_rport_add(host, &ids);
if (IS_ERR(rport))
goto add_srp_port_failed;

29
drivers/scsi/scsi_transport_srp.c
View file

@ -37,7 +37,7 @@ struct srp_host_attrs {
#define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data)
#define SRP_HOST_ATTRS 0
#define SRP_RPORT_ATTRS 3
#define SRP_RPORT_ATTRS 2
struct srp_internal {
struct scsi_transport_template t;
@ -107,6 +107,31 @@ show_srp_rport_id(struct class_device *cdev, char *buf)
static CLASS_DEVICE_ATTR(port_id, S_IRUGO, show_srp_rport_id, NULL);
static const struct {
u32 value;
char *name;
} srp_rport_role_names[] = {
{SRP_RPORT_ROLE_INITIATOR, "SRP Initiator"},
{SRP_RPORT_ROLE_TARGET, "SRP Target"},
};
static ssize_t
show_srp_rport_roles(struct class_device *cdev, char *buf)
{
struct srp_rport *rport = transport_class_to_srp_rport(cdev);
int i;
char *name = NULL;
for (i = 0; i < ARRAY_SIZE(srp_rport_role_names); i++)
if (srp_rport_role_names[i].value == rport->roles) {
name = srp_rport_role_names[i].name;
break;
}
return sprintf(buf, "%s\n", name ? : "unknown");
}
static CLASS_DEVICE_ATTR(roles, S_IRUGO, show_srp_rport_roles, NULL);
static void srp_rport_release(struct device *dev)
{
struct srp_rport *rport = dev_to_rport(dev);
@ -182,6 +207,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
rport->dev.release = srp_rport_release;
memcpy(rport->port_id, ids->port_id, sizeof(rport->port_id));
rport->roles = ids->roles;
id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id);
sprintf(rport->dev.bus_id, "port-%d:%d", shost->host_no, id);
@ -266,6 +292,7 @@ srp_attach_transport(struct srp_function_template *ft)
count = 0;
SETUP_RPORT_ATTRIBUTE_RD(port_id);
SETUP_RPORT_ATTRIBUTE_RD(roles);
i->rport_attrs[count] = NULL;
i->f = ft;

5
include/scsi/scsi_transport_srp.h
View file

@ -5,14 +5,19 @@
#include <linux/types.h>
#include <linux/mutex.h>
#define SRP_RPORT_ROLE_INITIATOR 0
#define SRP_RPORT_ROLE_TARGET 1
struct srp_rport_identifiers {
u8 port_id[16];
u8 roles;
};
struct srp_rport {
struct device dev;
u8 port_id[16];
u8 roles;
};
struct srp_function_template {