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authorLinus Torvalds <torvalds@g5.osdl.org>2005-11-04 16:31:54 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-04 16:31:54 -0800
commitba77df570c6710c9c19b31e0e48e4bcdf31cefe8 (patch)
tree997c210135b5578982df256dd5a0140e04d972d1 /drivers/infiniband/core
parent602d4a7e2f4b843d1a67375d4d7104073495b758 (diff)
parentd09e32764176b61c4afee9fd5e7fe04713bfa56f (diff)
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
Diffstat (limited to 'drivers/infiniband/core')
-rw-r--r--drivers/infiniband/core/agent.c3
-rw-r--r--drivers/infiniband/core/cm.c6
-rw-r--r--drivers/infiniband/core/device.c10
-rw-r--r--drivers/infiniband/core/mad.c31
-rw-r--r--drivers/infiniband/core/sysfs.c6
-rw-r--r--drivers/infiniband/core/ucm.c9
-rw-r--r--drivers/infiniband/core/user_mad.c80
-rw-r--r--drivers/infiniband/core/uverbs.h1
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c1
-rw-r--r--drivers/infiniband/core/uverbs_main.c13
10 files changed, 91 insertions, 69 deletions
diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c
index 0c3c6952faa..7545775d38e 100644
--- a/drivers/infiniband/core/agent.c
+++ b/drivers/infiniband/core/agent.c
@@ -155,13 +155,12 @@ int ib_agent_port_open(struct ib_device *device, int port_num)
int ret;
/* Create new device info */
- port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL);
+ port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL);
if (!port_priv) {
printk(KERN_ERR SPFX "No memory for ib_agent_port_private\n");
ret = -ENOMEM;
goto error1;
}
- memset(port_priv, 0, sizeof *port_priv);
/* Obtain send only MAD agent for SMI QP */
port_priv->agent[0] = ib_register_mad_agent(device, port_num,
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 580c3a2bb10..02110e00d14 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -544,11 +544,10 @@ struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
struct cm_id_private *cm_id_priv;
int ret;
- cm_id_priv = kmalloc(sizeof *cm_id_priv, GFP_KERNEL);
+ cm_id_priv = kzalloc(sizeof *cm_id_priv, GFP_KERNEL);
if (!cm_id_priv)
return ERR_PTR(-ENOMEM);
- memset(cm_id_priv, 0, sizeof *cm_id_priv);
cm_id_priv->id.state = IB_CM_IDLE;
cm_id_priv->id.device = device;
cm_id_priv->id.cm_handler = cm_handler;
@@ -621,10 +620,9 @@ static struct cm_timewait_info * cm_create_timewait_info(__be32 local_id)
{
struct cm_timewait_info *timewait_info;
- timewait_info = kmalloc(sizeof *timewait_info, GFP_KERNEL);
+ timewait_info = kzalloc(sizeof *timewait_info, GFP_KERNEL);
if (!timewait_info)
return ERR_PTR(-ENOMEM);
- memset(timewait_info, 0, sizeof *timewait_info);
timewait_info->work.local_id = local_id;
INIT_WORK(&timewait_info->work.work, cm_work_handler,
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 5a6e4497640..e169e798354 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -161,17 +161,9 @@ static int alloc_name(char *name)
*/
struct ib_device *ib_alloc_device(size_t size)
{
- void *dev;
-
BUG_ON(size < sizeof (struct ib_device));
- dev = kmalloc(size, GFP_KERNEL);
- if (!dev)
- return NULL;
-
- memset(dev, 0, size);
-
- return dev;
+ return kzalloc(size, GFP_KERNEL);
}
EXPORT_SYMBOL(ib_alloc_device);
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 88f9f8c9eac..3d8175e5f05 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -255,12 +255,11 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device,
}
/* Allocate structures */
- mad_agent_priv = kmalloc(sizeof *mad_agent_priv, GFP_KERNEL);
+ mad_agent_priv = kzalloc(sizeof *mad_agent_priv, GFP_KERNEL);
if (!mad_agent_priv) {
ret = ERR_PTR(-ENOMEM);
goto error1;
}
- memset(mad_agent_priv, 0, sizeof *mad_agent_priv);
mad_agent_priv->agent.mr = ib_get_dma_mr(port_priv->qp_info[qpn].qp->pd,
IB_ACCESS_LOCAL_WRITE);
@@ -448,14 +447,13 @@ struct ib_mad_agent *ib_register_mad_snoop(struct ib_device *device,
goto error1;
}
/* Allocate structures */
- mad_snoop_priv = kmalloc(sizeof *mad_snoop_priv, GFP_KERNEL);
+ mad_snoop_priv = kzalloc(sizeof *mad_snoop_priv, GFP_KERNEL);
if (!mad_snoop_priv) {
ret = ERR_PTR(-ENOMEM);
goto error1;
}
/* Now, fill in the various structures */
- memset(mad_snoop_priv, 0, sizeof *mad_snoop_priv);
mad_snoop_priv->qp_info = &port_priv->qp_info[qpn];
mad_snoop_priv->agent.device = device;
mad_snoop_priv->agent.recv_handler = recv_handler;
@@ -794,10 +792,9 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
(!rmpp_active && buf_size > sizeof(struct ib_mad)))
return ERR_PTR(-EINVAL);
- buf = kmalloc(sizeof *mad_send_wr + buf_size, gfp_mask);
+ buf = kzalloc(sizeof *mad_send_wr + buf_size, gfp_mask);
if (!buf)
return ERR_PTR(-ENOMEM);
- memset(buf, 0, sizeof *mad_send_wr + buf_size);
mad_send_wr = buf + buf_size;
mad_send_wr->send_buf.mad = buf;
@@ -1039,14 +1036,12 @@ static int method_in_use(struct ib_mad_mgmt_method_table **method,
static int allocate_method_table(struct ib_mad_mgmt_method_table **method)
{
/* Allocate management method table */
- *method = kmalloc(sizeof **method, GFP_ATOMIC);
+ *method = kzalloc(sizeof **method, GFP_ATOMIC);
if (!*method) {
printk(KERN_ERR PFX "No memory for "
"ib_mad_mgmt_method_table\n");
return -ENOMEM;
}
- /* Clear management method table */
- memset(*method, 0, sizeof **method);
return 0;
}
@@ -1137,15 +1132,14 @@ static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req,
class = &port_priv->version[mad_reg_req->mgmt_class_version].class;
if (!*class) {
/* Allocate management class table for "new" class version */
- *class = kmalloc(sizeof **class, GFP_ATOMIC);
+ *class = kzalloc(sizeof **class, GFP_ATOMIC);
if (!*class) {
printk(KERN_ERR PFX "No memory for "
"ib_mad_mgmt_class_table\n");
ret = -ENOMEM;
goto error1;
}
- /* Clear management class table */
- memset(*class, 0, sizeof(**class));
+
/* Allocate method table for this management class */
method = &(*class)->method_table[mgmt_class];
if ((ret = allocate_method_table(method)))
@@ -1209,25 +1203,24 @@ static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req,
mad_reg_req->mgmt_class_version].vendor;
if (!*vendor_table) {
/* Allocate mgmt vendor class table for "new" class version */
- vendor = kmalloc(sizeof *vendor, GFP_ATOMIC);
+ vendor = kzalloc(sizeof *vendor, GFP_ATOMIC);
if (!vendor) {
printk(KERN_ERR PFX "No memory for "
"ib_mad_mgmt_vendor_class_table\n");
goto error1;
}
- /* Clear management vendor class table */
- memset(vendor, 0, sizeof(*vendor));
+
*vendor_table = vendor;
}
if (!(*vendor_table)->vendor_class[vclass]) {
/* Allocate table for this management vendor class */
- vendor_class = kmalloc(sizeof *vendor_class, GFP_ATOMIC);
+ vendor_class = kzalloc(sizeof *vendor_class, GFP_ATOMIC);
if (!vendor_class) {
printk(KERN_ERR PFX "No memory for "
"ib_mad_mgmt_vendor_class\n");
goto error2;
}
- memset(vendor_class, 0, sizeof(*vendor_class));
+
(*vendor_table)->vendor_class[vclass] = vendor_class;
}
for (i = 0; i < MAX_MGMT_OUI; i++) {
@@ -2524,12 +2517,12 @@ static int ib_mad_port_open(struct ib_device *device,
char name[sizeof "ib_mad123"];
/* Create new device info */
- port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL);
+ port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL);
if (!port_priv) {
printk(KERN_ERR PFX "No memory for ib_mad_port_private\n");
return -ENOMEM;
}
- memset(port_priv, 0, sizeof *port_priv);
+
port_priv->device = device;
port_priv->port_num = port_num;
spin_lock_init(&port_priv->reg_lock);
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 7ce7a6c782f..b8120650e71 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -307,14 +307,13 @@ static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
if (!p->ibdev->process_mad)
return sprintf(buf, "N/A (no PMA)\n");
- in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
+ in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
out_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
if (!in_mad || !out_mad) {
ret = -ENOMEM;
goto out;
}
- memset(in_mad, 0, sizeof *in_mad);
in_mad->mad_hdr.base_version = 1;
in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
in_mad->mad_hdr.class_version = 1;
@@ -508,10 +507,9 @@ static int add_port(struct ib_device *device, int port_num)
if (ret)
return ret;
- p = kmalloc(sizeof *p, GFP_KERNEL);
+ p = kzalloc(sizeof *p, GFP_KERNEL);
if (!p)
return -ENOMEM;
- memset(p, 0, sizeof *p);
p->ibdev = device;
p->port_num = port_num;
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index 28477565ecb..6e15787d1de 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -172,11 +172,10 @@ static struct ib_ucm_context *ib_ucm_ctx_alloc(struct ib_ucm_file *file)
struct ib_ucm_context *ctx;
int result;
- ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
return NULL;
- memset(ctx, 0, sizeof *ctx);
atomic_set(&ctx->ref, 1);
init_waitqueue_head(&ctx->wait);
ctx->file = file;
@@ -386,11 +385,10 @@ static int ib_ucm_event_handler(struct ib_cm_id *cm_id,
ctx = cm_id->context;
- uevent = kmalloc(sizeof(*uevent), GFP_KERNEL);
+ uevent = kzalloc(sizeof *uevent, GFP_KERNEL);
if (!uevent)
goto err1;
- memset(uevent, 0, sizeof(*uevent));
uevent->ctx = ctx;
uevent->cm_id = cm_id;
uevent->resp.uid = ctx->uid;
@@ -1345,11 +1343,10 @@ static void ib_ucm_add_one(struct ib_device *device)
if (!device->alloc_ucontext)
return;
- ucm_dev = kmalloc(sizeof *ucm_dev, GFP_KERNEL);
+ ucm_dev = kzalloc(sizeof *ucm_dev, GFP_KERNEL);
if (!ucm_dev)
return;
- memset(ucm_dev, 0, sizeof *ucm_dev);
ucm_dev->ib_dev = device;
ucm_dev->devnum = find_first_zero_bit(dev_map, IB_UCM_MAX_DEVICES);
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 97128e25f78..aed5ca23fb2 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -94,6 +94,9 @@ struct ib_umad_port {
struct class_device *sm_class_dev;
struct semaphore sm_sem;
+ struct rw_semaphore mutex;
+ struct list_head file_list;
+
struct ib_device *ib_dev;
struct ib_umad_device *umad_dev;
int dev_num;
@@ -108,10 +111,10 @@ struct ib_umad_device {
struct ib_umad_file {
struct ib_umad_port *port;
- spinlock_t recv_lock;
struct list_head recv_list;
+ struct list_head port_list;
+ spinlock_t recv_lock;
wait_queue_head_t recv_wait;
- struct rw_semaphore agent_mutex;
struct ib_mad_agent *agent[IB_UMAD_MAX_AGENTS];
struct ib_mr *mr[IB_UMAD_MAX_AGENTS];
};
@@ -148,7 +151,7 @@ static int queue_packet(struct ib_umad_file *file,
{
int ret = 1;
- down_read(&file->agent_mutex);
+ down_read(&file->port->mutex);
for (packet->mad.hdr.id = 0;
packet->mad.hdr.id < IB_UMAD_MAX_AGENTS;
packet->mad.hdr.id++)
@@ -161,7 +164,7 @@ static int queue_packet(struct ib_umad_file *file,
break;
}
- up_read(&file->agent_mutex);
+ up_read(&file->port->mutex);
return ret;
}
@@ -322,7 +325,7 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
goto err;
}
- down_read(&file->agent_mutex);
+ down_read(&file->port->mutex);
agent = file->agent[packet->mad.hdr.id];
if (!agent) {
@@ -419,7 +422,7 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
if (ret)
goto err_msg;
- up_read(&file->agent_mutex);
+ up_read(&file->port->mutex);
return count;
@@ -430,7 +433,7 @@ err_ah:
ib_destroy_ah(ah);
err_up:
- up_read(&file->agent_mutex);
+ up_read(&file->port->mutex);
err:
kfree(packet);
@@ -460,7 +463,12 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, unsigned long arg)
int agent_id;
int ret;
- down_write(&file->agent_mutex);
+ down_write(&file->port->mutex);
+
+ if (!file->port->ib_dev) {
+ ret = -EPIPE;
+ goto out;
+ }
if (copy_from_user(&ureq, (void __user *) arg, sizeof ureq)) {
ret = -EFAULT;
@@ -522,7 +530,7 @@ err:
ib_unregister_mad_agent(agent);
out:
- up_write(&file->agent_mutex);
+ up_write(&file->port->mutex);
return ret;
}
@@ -531,7 +539,7 @@ static int ib_umad_unreg_agent(struct ib_umad_file *file, unsigned long arg)
u32 id;
int ret = 0;
- down_write(&file->agent_mutex);
+ down_write(&file->port->mutex);
if (get_user(id, (u32 __user *) arg)) {
ret = -EFAULT;
@@ -548,7 +556,7 @@ static int ib_umad_unreg_agent(struct ib_umad_file *file, unsigned long arg)
file->agent[id] = NULL;
out:
- up_write(&file->agent_mutex);
+ up_write(&file->port->mutex);
return ret;
}
@@ -569,6 +577,7 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
{
struct ib_umad_port *port;
struct ib_umad_file *file;
+ int ret = 0;
spin_lock(&port_lock);
port = umad_port[iminor(inode) - IB_UMAD_MINOR_BASE];
@@ -579,21 +588,32 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
if (!port)
return -ENXIO;
+ down_write(&port->mutex);
+
+ if (!port->ib_dev) {
+ ret = -ENXIO;
+ goto out;
+ }
+
file = kzalloc(sizeof *file, GFP_KERNEL);
if (!file) {
kref_put(&port->umad_dev->ref, ib_umad_release_dev);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out;
}
spin_lock_init(&file->recv_lock);
- init_rwsem(&file->agent_mutex);
INIT_LIST_HEAD(&file->recv_list);
init_waitqueue_head(&file->recv_wait);
file->port = port;
filp->private_data = file;
- return 0;
+ list_add_tail(&file->port_list, &port->file_list);
+
+out:
+ up_write(&port->mutex);
+ return ret;
}
static int ib_umad_close(struct inode *inode, struct file *filp)
@@ -603,6 +623,7 @@ static int ib_umad_close(struct inode *inode, struct file *filp)
struct ib_umad_packet *packet, *tmp;
int i;
+ down_write(&file->port->mutex);
for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i)
if (file->agent[i]) {
ib_dereg_mr(file->mr[i]);
@@ -612,6 +633,9 @@ static int ib_umad_close(struct inode *inode, struct file *filp)
list_for_each_entry_safe(packet, tmp, &file->recv_list, list)
kfree(packet);
+ list_del(&file->port_list);
+ up_write(&file->port->mutex);
+
kfree(file);
kref_put(&dev->ref, ib_umad_release_dev);
@@ -680,9 +704,13 @@ static int ib_umad_sm_close(struct inode *inode, struct file *filp)
struct ib_port_modify props = {
.clr_port_cap_mask = IB_PORT_SM
};
- int ret;
+ int ret = 0;
+
+ down_write(&port->mutex);
+ if (port->ib_dev)
+ ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
+ up_write(&port->mutex);
- ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
up(&port->sm_sem);
kref_put(&port->umad_dev->ref, ib_umad_release_dev);
@@ -745,6 +773,8 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
port->ib_dev = device;
port->port_num = port_num;
init_MUTEX(&port->sm_sem);
+ init_rwsem(&port->mutex);
+ INIT_LIST_HEAD(&port->file_list);
port->dev = cdev_alloc();
if (!port->dev)
@@ -813,6 +843,9 @@ err_cdev:
static void ib_umad_kill_port(struct ib_umad_port *port)
{
+ struct ib_umad_file *file;
+ int id;
+
class_set_devdata(port->class_dev, NULL);
class_set_devdata(port->sm_class_dev, NULL);
@@ -826,6 +859,21 @@ static void ib_umad_kill_port(struct ib_umad_port *port)
umad_port[port->dev_num] = NULL;
spin_unlock(&port_lock);
+ down_write(&port->mutex);
+
+ port->ib_dev = NULL;
+
+ list_for_each_entry(file, &port->file_list, port_list)
+ for (id = 0; id < IB_UMAD_MAX_AGENTS; ++id) {
+ if (!file->agent[id])
+ continue;
+ ib_dereg_mr(file->mr[id]);
+ ib_unregister_mad_agent(file->agent[id]);
+ file->agent[id] = NULL;
+ }
+
+ up_write(&port->mutex);
+
clear_bit(port->dev_num, dev_map);
}
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 031cdf3c066..ecb83012786 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -113,6 +113,7 @@ struct ib_uevent_object {
struct ib_ucq_object {
struct ib_uobject uobject;
+ struct ib_uverbs_file *uverbs_file;
struct list_head comp_list;
struct list_head async_list;
u32 comp_events_reported;
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 8c89abc8c76..63a74151c60 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -602,6 +602,7 @@ ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
uobj->uobject.user_handle = cmd.user_handle;
uobj->uobject.context = file->ucontext;
+ uobj->uverbs_file = file;
uobj->comp_events_reported = 0;
uobj->async_events_reported = 0;
INIT_LIST_HEAD(&uobj->comp_list);
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 0eb38f479b3..de6581d7cb8 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -442,13 +442,10 @@ static void ib_uverbs_async_handler(struct ib_uverbs_file *file,
void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr)
{
- struct ib_uverbs_event_file *ev_file = context_ptr;
- struct ib_ucq_object *uobj;
+ struct ib_ucq_object *uobj = container_of(event->element.cq->uobject,
+ struct ib_ucq_object, uobject);
- uobj = container_of(event->element.cq->uobject,
- struct ib_ucq_object, uobject);
-
- ib_uverbs_async_handler(ev_file->uverbs_file, uobj->uobject.user_handle,
+ ib_uverbs_async_handler(uobj->uverbs_file, uobj->uobject.user_handle,
event->event, &uobj->async_list,
&uobj->async_events_reported);
@@ -728,12 +725,10 @@ static void ib_uverbs_add_one(struct ib_device *device)
if (!device->alloc_ucontext)
return;
- uverbs_dev = kmalloc(sizeof *uverbs_dev, GFP_KERNEL);
+ uverbs_dev = kzalloc(sizeof *uverbs_dev, GFP_KERNEL);
if (!uverbs_dev)
return;
- memset(uverbs_dev, 0, sizeof *uverbs_dev);
-
kref_init(&uverbs_dev->ref);
spin_lock(&map_lock);