Commit cf311cd4 authored by Sean Hefty's avatar Sean Hefty Committed by Roland Dreier

IB: Add node_guid to struct ib_device

Add a node_guid field to struct ib_device.  It is the responsibility
of the low-level driver to initialize this field before registering a
device with the midlayer.  Convert everyone to looking at this field
instead of calling ib_query_device() when all they want is the node
GUID, and remove the node_guid field from struct ib_device_attr.
Signed-off-by: default avatarSean Hefty <sean.hefty@intel.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 87635b71
......@@ -3163,22 +3163,6 @@ int ib_cm_init_qp_attr(struct ib_cm_id *cm_id,
}
EXPORT_SYMBOL(ib_cm_init_qp_attr);
static __be64 cm_get_ca_guid(struct ib_device *device)
{
struct ib_device_attr *device_attr;
__be64 guid;
int ret;
device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
if (!device_attr)
return 0;
ret = ib_query_device(device, device_attr);
guid = ret ? 0 : device_attr->node_guid;
kfree(device_attr);
return guid;
}
static void cm_add_one(struct ib_device *device)
{
struct cm_device *cm_dev;
......@@ -3200,9 +3184,7 @@ static void cm_add_one(struct ib_device *device)
return;
cm_dev->device = device;
cm_dev->ca_guid = cm_get_ca_guid(device);
if (!cm_dev->ca_guid)
goto error1;
cm_dev->ca_guid = device->node_guid;
set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
for (i = 1; i <= device->phys_port_cnt; i++) {
......@@ -3217,11 +3199,11 @@ static void cm_add_one(struct ib_device *device)
cm_recv_handler,
port);
if (IS_ERR(port->mad_agent))
goto error2;
goto error1;
ret = ib_modify_port(device, i, 0, &port_modify);
if (ret)
goto error3;
goto error2;
}
ib_set_client_data(device, &cm_client, cm_dev);
......@@ -3230,9 +3212,9 @@ static void cm_add_one(struct ib_device *device)
write_unlock_irqrestore(&cm.device_lock, flags);
return;
error3:
ib_unregister_mad_agent(port->mad_agent);
error2:
ib_unregister_mad_agent(port->mad_agent);
error1:
port_modify.set_port_cap_mask = 0;
port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
while (--i) {
......@@ -3240,7 +3222,6 @@ static void cm_add_one(struct ib_device *device)
ib_modify_port(device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
}
error1:
kfree(cm_dev);
}
......
......@@ -445,13 +445,7 @@ static int ib_device_uevent(struct class_device *cdev, char **envp,
return -ENOMEM;
/*
* It might be nice to pass the node GUID with the event, but
* right now the only way to get it is to query the device
* provider, and this can crash during device removal because
* we are will be running after driver removal has started.
* We could add a node_guid field to struct ib_device, or we
* could just let userspace read the node GUID from sysfs when
* devices are added.
* It would be nice to pass the node GUID with the event...
*/
envp[i] = NULL;
......@@ -623,21 +617,15 @@ static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf)
static ssize_t show_node_guid(struct class_device *cdev, char *buf)
{
struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
struct ib_device_attr attr;
ssize_t ret;
if (!ibdev_is_alive(dev))
return -ENODEV;
ret = ib_query_device(dev, &attr);
if (ret)
return ret;
return sprintf(buf, "%04x:%04x:%04x:%04x\n",
be16_to_cpu(((__be16 *) &attr.node_guid)[0]),
be16_to_cpu(((__be16 *) &attr.node_guid)[1]),
be16_to_cpu(((__be16 *) &attr.node_guid)[2]),
be16_to_cpu(((__be16 *) &attr.node_guid)[3]));
be16_to_cpu(((__be16 *) &dev->node_guid)[0]),
be16_to_cpu(((__be16 *) &dev->node_guid)[1]),
be16_to_cpu(((__be16 *) &dev->node_guid)[2]),
be16_to_cpu(((__be16 *) &dev->node_guid)[3]));
}
static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
......
......@@ -157,7 +157,7 @@ ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
memset(&resp, 0, sizeof resp);
resp.fw_ver = attr.fw_ver;
resp.node_guid = attr.node_guid;
resp.node_guid = file->device->ib_dev->node_guid;
resp.sys_image_guid = attr.sys_image_guid;
resp.max_mr_size = attr.max_mr_size;
resp.page_size_cap = attr.page_size_cap;
......
......@@ -33,7 +33,7 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* $Id: mthca_provider.c 1397 2004-12-28 05:09:00Z roland $
* $Id: mthca_provider.c 4859 2006-01-09 21:55:10Z roland $
*/
#include <rdma/ib_smi.h>
......@@ -91,7 +91,6 @@ static int mthca_query_device(struct ib_device *ibdev,
props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
memcpy(&props->node_guid, out_mad->data + 12, 8);
props->max_mr_size = ~0ull;
props->page_size_cap = mdev->limits.page_size_cap;
......@@ -1054,11 +1053,48 @@ static struct class_device_attribute *mthca_class_attributes[] = {
&class_device_attr_board_id
};
static int mthca_init_node_data(struct mthca_dev *dev)
{
struct ib_smp *in_mad = NULL;
struct ib_smp *out_mad = NULL;
int err = -ENOMEM;
u8 status;
in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
if (!in_mad || !out_mad)
goto out;
init_query_mad(in_mad);
in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
err = mthca_MAD_IFC(dev, 1, 1,
1, NULL, NULL, in_mad, out_mad,
&status);
if (err)
goto out;
if (status) {
err = -EINVAL;
goto out;
}
memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
out:
kfree(in_mad);
kfree(out_mad);
return err;
}
int mthca_register_device(struct mthca_dev *dev)
{
int ret;
int i;
ret = mthca_init_node_data(dev);
if (ret)
return ret;
strlcpy(dev->ib_dev.name, "mthca%d", IB_DEVICE_NAME_MAX);
dev->ib_dev.owner = THIS_MODULE;
......
......@@ -1516,8 +1516,7 @@ static ssize_t show_port(struct class_device *class_dev, char *buf)
static CLASS_DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
static struct srp_host *srp_add_port(struct ib_device *device,
__be64 node_guid, u8 port)
static struct srp_host *srp_add_port(struct ib_device *device, u8 port)
{
struct srp_host *host;
......@@ -1532,7 +1531,7 @@ static struct srp_host *srp_add_port(struct ib_device *device,
host->port = port;
host->initiator_port_id[7] = port;
memcpy(host->initiator_port_id + 8, &node_guid, 8);
memcpy(host->initiator_port_id + 8, &device->node_guid, 8);
host->pd = ib_alloc_pd(device);
if (IS_ERR(host->pd))
......@@ -1580,22 +1579,11 @@ static void srp_add_one(struct ib_device *device)
{
struct list_head *dev_list;
struct srp_host *host;
struct ib_device_attr *dev_attr;
int s, e, p;
dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL);
if (!dev_attr)
return;
if (ib_query_device(device, dev_attr)) {
printk(KERN_WARNING PFX "Couldn't query node GUID for %s.\n",
device->name);
goto out;
}
dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
if (!dev_list)
goto out;
return;
INIT_LIST_HEAD(dev_list);
......@@ -1608,15 +1596,12 @@ static void srp_add_one(struct ib_device *device)
}
for (p = s; p <= e; ++p) {
host = srp_add_port(device, dev_attr->node_guid, p);
host = srp_add_port(device, p);
if (host)
list_add_tail(&host->list, dev_list);
}
ib_set_client_data(device, &srp_client, dev_list);
out:
kfree(dev_attr);
}
static void srp_remove_one(struct ib_device *device)
......
......@@ -88,7 +88,6 @@ enum ib_atomic_cap {
struct ib_device_attr {
u64 fw_ver;
__be64 node_guid;
__be64 sys_image_guid;
u64 max_mr_size;
u64 page_size_cap;
......@@ -951,6 +950,7 @@ struct ib_device {
u64 uverbs_cmd_mask;
int uverbs_abi_ver;
__be64 node_guid;
u8 node_type;
u8 phys_port_cnt;
};
......
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