static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len) = {
- [IB_USER_VERBS_CMD_QUERY_PARAMS] = ib_uverbs_query_params,
- [IB_USER_VERBS_CMD_GET_CONTEXT] = ib_uverbs_get_context,
- [IB_USER_VERBS_CMD_QUERY_DEVICE] = ib_uverbs_query_device,
- [IB_USER_VERBS_CMD_QUERY_PORT] = ib_uverbs_query_port,
- [IB_USER_VERBS_CMD_QUERY_GID] = ib_uverbs_query_gid,
- [IB_USER_VERBS_CMD_QUERY_PKEY] = ib_uverbs_query_pkey,
- [IB_USER_VERBS_CMD_ALLOC_PD] = ib_uverbs_alloc_pd,
- [IB_USER_VERBS_CMD_DEALLOC_PD] = ib_uverbs_dealloc_pd,
- [IB_USER_VERBS_CMD_REG_MR] = ib_uverbs_reg_mr,
- [IB_USER_VERBS_CMD_DEREG_MR] = ib_uverbs_dereg_mr,
- [IB_USER_VERBS_CMD_CREATE_CQ] = ib_uverbs_create_cq,
- [IB_USER_VERBS_CMD_DESTROY_CQ] = ib_uverbs_destroy_cq,
- [IB_USER_VERBS_CMD_CREATE_QP] = ib_uverbs_create_qp,
- [IB_USER_VERBS_CMD_MODIFY_QP] = ib_uverbs_modify_qp,
- [IB_USER_VERBS_CMD_DESTROY_QP] = ib_uverbs_destroy_qp,
- [IB_USER_VERBS_CMD_ATTACH_MCAST] = ib_uverbs_attach_mcast,
- [IB_USER_VERBS_CMD_DETACH_MCAST] = ib_uverbs_detach_mcast,
- [IB_USER_VERBS_CMD_CREATE_SRQ] = ib_uverbs_create_srq,
- [IB_USER_VERBS_CMD_MODIFY_SRQ] = ib_uverbs_modify_srq,
- [IB_USER_VERBS_CMD_DESTROY_SRQ] = ib_uverbs_destroy_srq,
+ [IB_USER_VERBS_CMD_GET_CONTEXT] = ib_uverbs_get_context,
+ [IB_USER_VERBS_CMD_QUERY_DEVICE] = ib_uverbs_query_device,
+ [IB_USER_VERBS_CMD_QUERY_PORT] = ib_uverbs_query_port,
+ [IB_USER_VERBS_CMD_ALLOC_PD] = ib_uverbs_alloc_pd,
+ [IB_USER_VERBS_CMD_DEALLOC_PD] = ib_uverbs_dealloc_pd,
+ [IB_USER_VERBS_CMD_REG_MR] = ib_uverbs_reg_mr,
+ [IB_USER_VERBS_CMD_DEREG_MR] = ib_uverbs_dereg_mr,
+ [IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL] = ib_uverbs_create_comp_channel,
+ [IB_USER_VERBS_CMD_CREATE_CQ] = ib_uverbs_create_cq,
+ [IB_USER_VERBS_CMD_DESTROY_CQ] = ib_uverbs_destroy_cq,
+ [IB_USER_VERBS_CMD_CREATE_QP] = ib_uverbs_create_qp,
+ [IB_USER_VERBS_CMD_MODIFY_QP] = ib_uverbs_modify_qp,
+ [IB_USER_VERBS_CMD_DESTROY_QP] = ib_uverbs_destroy_qp,
+ [IB_USER_VERBS_CMD_ATTACH_MCAST] = ib_uverbs_attach_mcast,
+ [IB_USER_VERBS_CMD_DETACH_MCAST] = ib_uverbs_detach_mcast,
+ [IB_USER_VERBS_CMD_CREATE_SRQ] = ib_uverbs_create_srq,
+ [IB_USER_VERBS_CMD_MODIFY_SRQ] = ib_uverbs_modify_srq,
+ [IB_USER_VERBS_CMD_DESTROY_SRQ] = ib_uverbs_destroy_srq,
};
static struct vfsmount *uverbs_event_mnt;
idr_remove(&ib_uverbs_qp_idr, uobj->id);
ib_destroy_qp(qp);
list_del(&uobj->list);
- kfree(uobj);
+ kfree(container_of(uobj, struct ib_uevent_object, uobject));
}
list_for_each_entry_safe(uobj, tmp, &context->cq_list, list) {
idr_remove(&ib_uverbs_cq_idr, uobj->id);
ib_destroy_cq(cq);
list_del(&uobj->list);
- kfree(uobj);
+ kfree(container_of(uobj, struct ib_ucq_object, uobject));
}
list_for_each_entry_safe(uobj, tmp, &context->srq_list, list) {
idr_remove(&ib_uverbs_srq_idr, uobj->id);
ib_destroy_srq(srq);
list_del(&uobj->list);
- kfree(uobj);
+ kfree(container_of(uobj, struct ib_uevent_object, uobject));
}
/* XXX Free MWs */
size_t count, loff_t *pos)
{
struct ib_uverbs_event_file *file = filp->private_data;
- void *event;
+ struct ib_uverbs_event *event;
int eventsz;
int ret = 0;
spin_lock_irq(&file->lock);
- while (list_empty(&file->event_list) && file->fd >= 0) {
+ while (list_empty(&file->event_list)) {
spin_unlock_irq(&file->lock);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
if (wait_event_interruptible(file->poll_wait,
- !list_empty(&file->event_list) ||
- file->fd < 0))
+ !list_empty(&file->event_list)))
return -ERESTARTSYS;
spin_lock_irq(&file->lock);
}
- if (file->fd < 0) {
- spin_unlock_irq(&file->lock);
- return -ENODEV;
- }
+ event = list_entry(file->event_list.next, struct ib_uverbs_event, list);
- if (file->is_async) {
- event = list_entry(file->event_list.next,
- struct ib_uverbs_async_event, list);
+ if (file->is_async)
eventsz = sizeof (struct ib_uverbs_async_event_desc);
- } else {
- event = list_entry(file->event_list.next,
- struct ib_uverbs_comp_event, list);
+ else
eventsz = sizeof (struct ib_uverbs_comp_event_desc);
- }
if (eventsz > count) {
ret = -EINVAL;
event = NULL;
- } else
+ } else {
list_del(file->event_list.next);
+ if (event->counter) {
+ ++(*event->counter);
+ list_del(&event->obj_list);
+ }
+ }
spin_unlock_irq(&file->lock);
poll_wait(filp, &file->poll_wait, wait);
spin_lock_irq(&file->lock);
- if (file->fd < 0)
- pollflags = POLLERR;
- else if (!list_empty(&file->event_list))
+ if (!list_empty(&file->event_list))
pollflags = POLLIN | POLLRDNORM;
spin_unlock_irq(&file->lock);
return pollflags;
}
-static void ib_uverbs_event_release(struct ib_uverbs_event_file *file)
+void ib_uverbs_release_event_file(struct kref *ref)
{
- struct list_head *entry, *tmp;
+ struct ib_uverbs_event_file *file =
+ container_of(ref, struct ib_uverbs_event_file, ref);
- spin_lock_irq(&file->lock);
- if (file->fd != -1) {
- file->fd = -1;
- list_for_each_safe(entry, tmp, &file->event_list)
- if (file->is_async)
- kfree(list_entry(entry, struct ib_uverbs_async_event, list));
- else
- kfree(list_entry(entry, struct ib_uverbs_comp_event, list));
- }
- spin_unlock_irq(&file->lock);
+ kfree(file);
}
static int ib_uverbs_event_fasync(int fd, struct file *filp, int on)
static int ib_uverbs_event_close(struct inode *inode, struct file *filp)
{
struct ib_uverbs_event_file *file = filp->private_data;
+ struct ib_uverbs_event *entry, *tmp;
+
+ spin_lock_irq(&file->lock);
+ file->file = NULL;
+ list_for_each_entry_safe(entry, tmp, &file->event_list, list) {
+ if (entry->counter)
+ list_del(&entry->obj_list);
+ kfree(entry);
+ }
+ spin_unlock_irq(&file->lock);
- ib_uverbs_event_release(file);
ib_uverbs_event_fasync(-1, filp, 0);
- kref_put(&file->uverbs_file->ref, ib_uverbs_release_file);
+
+ if (file->is_async) {
+ ib_unregister_event_handler(&file->uverbs_file->event_handler);
+ kref_put(&file->uverbs_file->ref, ib_uverbs_release_file);
+ }
+ kref_put(&file->ref, ib_uverbs_release_event_file);
return 0;
}
static struct file_operations uverbs_event_fops = {
- /*
- * No .owner field since we artificially create event files,
- * so there is no increment to the module reference count in
- * the open path. All event files come from a uverbs command
- * file, which already takes a module reference, so this is OK.
- */
+ .owner = THIS_MODULE,
.read = ib_uverbs_event_read,
.poll = ib_uverbs_event_poll,
.release = ib_uverbs_event_close,
void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context)
{
- struct ib_uverbs_file *file = cq_context;
- struct ib_uverbs_comp_event *entry;
- unsigned long flags;
+ struct ib_uverbs_event_file *file = cq_context;
+ struct ib_ucq_object *uobj;
+ struct ib_uverbs_event *entry;
+ unsigned long flags;
+
+ if (!file)
+ return;
+
+ spin_lock_irqsave(&file->lock, flags);
+ if (!file->file) {
+ spin_unlock_irqrestore(&file->lock, flags);
+ return;
+ }
entry = kmalloc(sizeof *entry, GFP_ATOMIC);
- if (!entry)
+ if (!entry) {
+ spin_unlock_irqrestore(&file->lock, flags);
return;
+ }
+
+ uobj = container_of(cq->uobject, struct ib_ucq_object, uobject);
- entry->desc.cq_handle = cq->uobject->user_handle;
+ entry->desc.comp.cq_handle = cq->uobject->user_handle;
+ entry->counter = &uobj->comp_events_reported;
- spin_lock_irqsave(&file->comp_file[0].lock, flags);
- list_add_tail(&entry->list, &file->comp_file[0].event_list);
- spin_unlock_irqrestore(&file->comp_file[0].lock, flags);
+ list_add_tail(&entry->list, &file->event_list);
+ list_add_tail(&entry->obj_list, &uobj->comp_list);
+ spin_unlock_irqrestore(&file->lock, flags);
- wake_up_interruptible(&file->comp_file[0].poll_wait);
- kill_fasync(&file->comp_file[0].async_queue, SIGIO, POLL_IN);
+ wake_up_interruptible(&file->poll_wait);
+ kill_fasync(&file->async_queue, SIGIO, POLL_IN);
}
static void ib_uverbs_async_handler(struct ib_uverbs_file *file,
- __u64 element, __u64 event)
+ __u64 element, __u64 event,
+ struct list_head *obj_list,
+ u32 *counter)
{
- struct ib_uverbs_async_event *entry;
+ struct ib_uverbs_event *entry;
unsigned long flags;
+ spin_lock_irqsave(&file->async_file->lock, flags);
+ if (!file->async_file->file) {
+ spin_unlock_irqrestore(&file->async_file->lock, flags);
+ return;
+ }
+
entry = kmalloc(sizeof *entry, GFP_ATOMIC);
- if (!entry)
+ if (!entry) {
+ spin_unlock_irqrestore(&file->async_file->lock, flags);
return;
+ }
- entry->desc.element = element;
- entry->desc.event_type = event;
+ entry->desc.async.element = element;
+ entry->desc.async.event_type = event;
+ entry->counter = counter;
- spin_lock_irqsave(&file->async_file.lock, flags);
- list_add_tail(&entry->list, &file->async_file.event_list);
- spin_unlock_irqrestore(&file->async_file.lock, flags);
+ list_add_tail(&entry->list, &file->async_file->event_list);
+ if (obj_list)
+ list_add_tail(&entry->obj_list, obj_list);
+ spin_unlock_irqrestore(&file->async_file->lock, flags);
- wake_up_interruptible(&file->async_file.poll_wait);
- kill_fasync(&file->async_file.async_queue, SIGIO, POLL_IN);
+ wake_up_interruptible(&file->async_file->poll_wait);
+ kill_fasync(&file->async_file->async_queue, SIGIO, POLL_IN);
}
void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr)
{
- ib_uverbs_async_handler(context_ptr,
- event->element.cq->uobject->user_handle,
- event->event);
+ struct ib_uverbs_event_file *ev_file = context_ptr;
+ struct ib_ucq_object *uobj;
+
+ uobj = container_of(event->element.cq->uobject,
+ struct ib_ucq_object, uobject);
+
+ ib_uverbs_async_handler(ev_file->uverbs_file, uobj->uobject.user_handle,
+ event->event, &uobj->async_list,
+ &uobj->async_events_reported);
+
}
void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr)
{
- ib_uverbs_async_handler(context_ptr,
- event->element.qp->uobject->user_handle,
- event->event);
+ struct ib_uevent_object *uobj;
+
+ uobj = container_of(event->element.qp->uobject,
+ struct ib_uevent_object, uobject);
+
+ ib_uverbs_async_handler(context_ptr, uobj->uobject.user_handle,
+ event->event, &uobj->event_list,
+ &uobj->events_reported);
}
void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr)
{
- ib_uverbs_async_handler(context_ptr,
- event->element.srq->uobject->user_handle,
- event->event);
+ struct ib_uevent_object *uobj;
+
+ uobj = container_of(event->element.srq->uobject,
+ struct ib_uevent_object, uobject);
+
+ ib_uverbs_async_handler(context_ptr, uobj->uobject.user_handle,
+ event->event, &uobj->event_list,
+ &uobj->events_reported);
}
-static void ib_uverbs_event_handler(struct ib_event_handler *handler,
- struct ib_event *event)
+void ib_uverbs_event_handler(struct ib_event_handler *handler,
+ struct ib_event *event)
{
struct ib_uverbs_file *file =
container_of(handler, struct ib_uverbs_file, event_handler);
- ib_uverbs_async_handler(file, event->element.port_num, event->event);
+ ib_uverbs_async_handler(file, event->element.port_num, event->event,
+ NULL, NULL);
}
-static int ib_uverbs_event_init(struct ib_uverbs_event_file *file,
- struct ib_uverbs_file *uverbs_file)
+struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file,
+ int is_async, int *fd)
{
+ struct ib_uverbs_event_file *ev_file;
struct file *filp;
+ int ret;
- spin_lock_init(&file->lock);
- INIT_LIST_HEAD(&file->event_list);
- init_waitqueue_head(&file->poll_wait);
- file->uverbs_file = uverbs_file;
- file->async_queue = NULL;
-
- file->fd = get_unused_fd();
- if (file->fd < 0)
- return file->fd;
+ ev_file = kmalloc(sizeof *ev_file, GFP_KERNEL);
+ if (!ev_file)
+ return ERR_PTR(-ENOMEM);
+
+ kref_init(&ev_file->ref);
+ spin_lock_init(&ev_file->lock);
+ INIT_LIST_HEAD(&ev_file->event_list);
+ init_waitqueue_head(&ev_file->poll_wait);
+ ev_file->uverbs_file = uverbs_file;
+ ev_file->async_queue = NULL;
+ ev_file->is_async = is_async;
+
+ *fd = get_unused_fd();
+ if (*fd < 0) {
+ ret = *fd;
+ goto err;
+ }
filp = get_empty_filp();
if (!filp) {
- put_unused_fd(file->fd);
- return -ENFILE;
+ ret = -ENFILE;
+ goto err_fd;
}
- filp->f_op = &uverbs_event_fops;
+ ev_file->file = filp;
+
+ /*
+ * fops_get() can't fail here, because we're coming from a
+ * system call on a uverbs file, which will already have a
+ * module reference.
+ */
+ filp->f_op = fops_get(&uverbs_event_fops);
filp->f_vfsmnt = mntget(uverbs_event_mnt);
filp->f_dentry = dget(uverbs_event_mnt->mnt_root);
filp->f_mapping = filp->f_dentry->d_inode->i_mapping;
filp->f_flags = O_RDONLY;
filp->f_mode = FMODE_READ;
- filp->private_data = file;
+ filp->private_data = ev_file;
- fd_install(file->fd, filp);
+ return filp;
- return 0;
+err_fd:
+ put_unused_fd(*fd);
+
+err:
+ kfree(ev_file);
+ return ERR_PTR(ret);
+}
+
+/*
+ * Look up a completion event file by FD. If lookup is successful,
+ * takes a ref to the event file struct that it returns; if
+ * unsuccessful, returns NULL.
+ */
+struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd)
+{
+ struct ib_uverbs_event_file *ev_file = NULL;
+ struct file *filp;
+
+ filp = fget(fd);
+ if (!filp)
+ return NULL;
+
+ if (filp->f_op != &uverbs_event_fops)
+ goto out;
+
+ ev_file = filp->private_data;
+ if (ev_file->is_async) {
+ ev_file = NULL;
+ goto out;
+ }
+
+ kref_get(&ev_file->ref);
+
+out:
+ fput(filp);
+ return ev_file;
}
static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
if (hdr.in_words * 4 != count)
return -EINVAL;
- if (hdr.command < 0 || hdr.command >= ARRAY_SIZE(uverbs_cmd_table))
+ if (hdr.command < 0 ||
+ hdr.command >= ARRAY_SIZE(uverbs_cmd_table) ||
+ !uverbs_cmd_table[hdr.command] ||
+ !(file->device->ib_dev->uverbs_cmd_mask & (1ull << hdr.command)))
return -EINVAL;
- if (!file->ucontext &&
- hdr.command != IB_USER_VERBS_CMD_QUERY_PARAMS &&
+ if (!file->ucontext &&
hdr.command != IB_USER_VERBS_CMD_GET_CONTEXT)
return -EINVAL;
struct ib_uverbs_device *dev =
container_of(inode->i_cdev, struct ib_uverbs_device, dev);
struct ib_uverbs_file *file;
- int i = 0;
- int ret;
if (!try_module_get(dev->ib_dev->owner))
return -ENODEV;
- file = kmalloc(sizeof *file +
- (dev->num_comp - 1) * sizeof (struct ib_uverbs_event_file),
- GFP_KERNEL);
- if (!file)
+ file = kmalloc(sizeof *file, GFP_KERNEL);
+ if (!file) {
+ module_put(dev->ib_dev->owner);
return -ENOMEM;
-
- file->device = dev;
- kref_init(&file->ref);
-
- file->ucontext = NULL;
-
- ret = ib_uverbs_event_init(&file->async_file, file);
- if (ret)
- goto err;
-
- file->async_file.is_async = 1;
-
- kref_get(&file->ref);
-
- for (i = 0; i < dev->num_comp; ++i) {
- ret = ib_uverbs_event_init(&file->comp_file[i], file);
- if (ret)
- goto err_async;
- kref_get(&file->ref);
- file->comp_file[i].is_async = 0;
}
+ file->device = dev;
+ file->ucontext = NULL;
+ kref_init(&file->ref);
+ init_MUTEX(&file->mutex);
filp->private_data = file;
- INIT_IB_EVENT_HANDLER(&file->event_handler, dev->ib_dev,
- ib_uverbs_event_handler);
- if (ib_register_event_handler(&file->event_handler))
- goto err_async;
-
return 0;
-
-err_async:
- while (i--)
- ib_uverbs_event_release(&file->comp_file[i]);
-
- ib_uverbs_event_release(&file->async_file);
-
-err:
- kref_put(&file->ref, ib_uverbs_release_file);
-
- return ret;
}
static int ib_uverbs_close(struct inode *inode, struct file *filp)
{
struct ib_uverbs_file *file = filp->private_data;
- int i;
- ib_unregister_event_handler(&file->event_handler);
- ib_uverbs_event_release(&file->async_file);
ib_dealloc_ucontext(file->ucontext);
- for (i = 0; i < file->device->num_comp; ++i)
- ib_uverbs_event_release(&file->comp_file[i]);
-
+ kref_put(&file->async_file->ref, ib_uverbs_release_event_file);
kref_put(&file->ref, ib_uverbs_release_file);
return 0;
}
static CLASS_DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
+static ssize_t show_dev_abi_version(struct class_device *class_dev, char *buf)
+{
+ struct ib_uverbs_device *dev =
+ container_of(class_dev, struct ib_uverbs_device, class_dev);
+
+ return sprintf(buf, "%d\n", dev->ib_dev->uverbs_abi_ver);
+}
+static CLASS_DEVICE_ATTR(abi_version, S_IRUGO, show_dev_abi_version, NULL);
+
static void ib_uverbs_release_class_dev(struct class_device *class_dev)
{
struct ib_uverbs_device *dev =
set_bit(uverbs_dev->devnum, dev_map);
spin_unlock(&map_lock);
- uverbs_dev->ib_dev = device;
- uverbs_dev->num_comp = 1;
+ uverbs_dev->ib_dev = device;
+ uverbs_dev->num_comp_vectors = 1;
if (device->mmap)
cdev_init(&uverbs_dev->dev, &uverbs_mmap_fops);
if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_ibdev))
goto err_class;
+ if (class_device_create_file(&uverbs_dev->class_dev, &class_device_attr_abi_version))
+ goto err_class;
ib_set_client_data(device, &uverbs_client, uverbs_dev);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff