I just applied the patch below to svn:
---
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: Sean Hefty <[EMAIL PROTECTED]>
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
--- infiniband/ulp/srp/ib_srp.c (revision 4929)
+++ infiniband/ulp/srp/ib_srp.c (working copy)
@@ -1516,8 +1516,7 @@ static ssize_t show_port(struct class_de
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(str
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
{
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
}
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)
--- infiniband/include/rdma/ib_verbs.h (revision 4929)
+++ infiniband/include/rdma/ib_verbs.h (working copy)
@@ -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;
--- infiniband/core/cm.c (revision 4929)
+++ infiniband/core/cm.c (working copy)
@@ -3230,22 +3230,6 @@ int ib_cm_init_qp_attr(struct ib_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;
@@ -3267,9 +3251,7 @@ static void cm_add_one(struct ib_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++) {
@@ -3284,11 +3266,11 @@ static void cm_add_one(struct ib_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);
@@ -3297,9 +3279,9 @@ static void cm_add_one(struct ib_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) {
@@ -3307,7 +3289,6 @@ error2:
ib_modify_port(device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
}
-error1:
kfree(cm_dev);
}
--- infiniband/core/sysfs.c (revision 4929)
+++ infiniband/core/sysfs.c (working copy)
@@ -449,13 +449,7 @@ static int ib_device_uevent(struct class
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;
@@ -627,21 +621,15 @@ static ssize_t show_sys_image_guid(struc
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);
--- infiniband/core/uverbs_cmd.c (revision 4929)
+++ infiniband/core/uverbs_cmd.c (working copy)
@@ -157,7 +157,7 @@ ssize_t ib_uverbs_query_device(struct ib
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;
--- infiniband/hw/ipath/ipath_verbs.c (revision 4929)
+++ infiniband/hw/ipath/ipath_verbs.c (working copy)
@@ -5368,7 +5368,6 @@ static int ipath_query_device(struct ib_
props->hw_ver = boardrev << 16 | majrev << 8 | minrev;
props->sys_image_guid = dev->sys_image_guid;
- props->node_guid = ipath_layer_get_guid(dev->ib_unit);
props->max_mr_size = ~0ull;
props->max_qp = 0xffff;
--- infiniband/hw/mthca/mthca_provider.c (revision 4929)
+++ infiniband/hw/mthca/mthca_provider.c (working copy)
@@ -91,7 +91,6 @@ static int mthca_query_device(struct ib_
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;
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