IB/srp: Add port/device attributes

Add local_ib_device and local_ib_port attributes to srp scsi_host.
These are needed when we want to connect to the same target through
multiple distinct ports.

Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 24 insertions, 6 deletions

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index fd8344cdc0db..249a98c06aeb 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1449,12 +1449,28 @@ static ssize_t show_zero_req_lim(struct class_device *cdev, char *buf)
         return sprintf(buf, "%d\n", target->zero_req_lim);
 }
 
-static CLASS_DEVICE_ATTR(id_ext,        S_IRUGO, show_id_ext,           NULL);
-static CLASS_DEVICE_ATTR(ioc_guid,      S_IRUGO, show_ioc_guid,         NULL);
-static CLASS_DEVICE_ATTR(service_id,    S_IRUGO, show_service_id,       NULL);
-static CLASS_DEVICE_ATTR(pkey,          S_IRUGO, show_pkey,             NULL);
-static CLASS_DEVICE_ATTR(dgid,          S_IRUGO, show_dgid,             NULL);
-static CLASS_DEVICE_ATTR(zero_req_lim,  S_IRUGO, show_zero_req_lim,     NULL);
+static ssize_t show_local_ib_port(struct class_device *cdev, char *buf)
+{
+        struct srp_target_port *target = host_to_target(class_to_shost(cdev));
+
+        return sprintf(buf, "%d\n", target->srp_host->port);
+}
+
+static ssize_t show_local_ib_device(struct class_device *cdev, char *buf)
+{
+        struct srp_target_port *target = host_to_target(class_to_shost(cdev));
+
+        return sprintf(buf, "%s\n", target->srp_host->dev->dev->name);
+}
+
+static CLASS_DEVICE_ATTR(id_ext,          S_IRUGO, show_id_ext,          NULL);
+static CLASS_DEVICE_ATTR(ioc_guid,        S_IRUGO, show_ioc_guid,        NULL);
+static CLASS_DEVICE_ATTR(service_id,      S_IRUGO, show_service_id,      NULL);
+static CLASS_DEVICE_ATTR(pkey,            S_IRUGO, show_pkey,            NULL);
+static CLASS_DEVICE_ATTR(dgid,            S_IRUGO, show_dgid,            NULL);
+static CLASS_DEVICE_ATTR(zero_req_lim,    S_IRUGO, show_zero_req_lim,    NULL);
+static CLASS_DEVICE_ATTR(local_ib_port,   S_IRUGO, show_local_ib_port,   NULL);
+static CLASS_DEVICE_ATTR(local_ib_device, S_IRUGO, show_local_ib_device, NULL);
 
 static struct class_device_attribute *srp_host_attrs[] = {
         &class_device_attr_id_ext,
@@ -1463,6 +1479,8 @@ static struct class_device_attribute *srp_host_attrs[] = {
         &class_device_attr_pkey,
         &class_device_attr_dgid,
         &class_device_attr_zero_req_lim,
+        &class_device_attr_local_ib_port,
+        &class_device_attr_local_ib_device,
         NULL
 };