C++ (Cpp) c4iw_init_dev_ucontext Examples

Example #1

File: provider.c Project: 168519/linux

static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
					       struct ib_udata *udata)
{
	struct c4iw_ucontext *context;
	struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
	static int warned;
	struct c4iw_alloc_ucontext_resp uresp;
	int ret = 0;
	struct c4iw_mm_entry *mm = NULL;

	PDBG("%s ibdev %p\n", __func__, ibdev);
	context = kzalloc(sizeof(*context), GFP_KERNEL);
	if (!context) {
		ret = -ENOMEM;
		goto err;
	}

	c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
	INIT_LIST_HEAD(&context->mmaps);
	spin_lock_init(&context->mmap_lock);

	if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
		if (!warned++)
			pr_err(MOD "Warning - downlevel libcxgb4 (non-fatal), device status page disabled.");
		rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
	} else {
		mm = kmalloc(sizeof(*mm), GFP_KERNEL);
		if (!mm) {
			ret = -ENOMEM;
			goto err_free;
		}

		uresp.status_page_size = PAGE_SIZE;

		spin_lock(&context->mmap_lock);
		uresp.status_page_key = context->key;
		context->key += PAGE_SIZE;
		spin_unlock(&context->mmap_lock);

		ret = ib_copy_to_udata(udata, &uresp,
				       sizeof(uresp) - sizeof(uresp.reserved));
		if (ret)
			goto err_mm;

		mm->key = uresp.status_page_key;
		mm->addr = virt_to_phys(rhp->rdev.status_page);
		mm->len = PAGE_SIZE;
		insert_mmap(context, mm);
	}
	return &context->ibucontext;
err_mm:
	kfree(mm);
err_free:
	kfree(context);
err:
	return ERR_PTR(ret);
}

Example #2

File: provider.c Project: 125radheyshyam/linux

static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
					       struct ib_udata *udata)
{
	struct c4iw_ucontext *context;
	struct c4iw_dev *rhp = to_c4iw_dev(ibdev);

	PDBG("%s ibdev %p\n", __func__, ibdev);
	context = kzalloc(sizeof(*context), GFP_KERNEL);
	if (!context)
		return ERR_PTR(-ENOMEM);
	c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
	INIT_LIST_HEAD(&context->mmaps);
	spin_lock_init(&context->mmap_lock);
	return &context->ibucontext;
}

Example #3

File: provider.c Project: Anjali05/linux

static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext,
			       struct ib_udata *udata)
{
	struct ib_device *ibdev = ucontext->device;
	struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext);
	struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
	struct c4iw_alloc_ucontext_resp uresp;
	int ret = 0;
	struct c4iw_mm_entry *mm = NULL;

	pr_debug("ibdev %p\n", ibdev);
	c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx);
	INIT_LIST_HEAD(&context->mmaps);
	spin_lock_init(&context->mmap_lock);

	if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) {
		pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n");
		rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED;
	} else {
		mm = kmalloc(sizeof(*mm), GFP_KERNEL);
		if (!mm) {
			ret = -ENOMEM;
			goto err;
		}

		uresp.status_page_size = PAGE_SIZE;

		spin_lock(&context->mmap_lock);
		uresp.status_page_key = context->key;
		context->key += PAGE_SIZE;
		spin_unlock(&context->mmap_lock);

		ret = ib_copy_to_udata(udata, &uresp,
				       sizeof(uresp) - sizeof(uresp.reserved));
		if (ret)
			goto err_mm;

		mm->key = uresp.status_page_key;
		mm->addr = virt_to_phys(rhp->rdev.status_page);
		mm->len = PAGE_SIZE;
		insert_mmap(context, mm);
	}
	return 0;
err_mm:
	kfree(mm);
err:
	return ret;
}