C++ (Cpp) qeth_core_load_disciplineの例

コード例 #1

ファイル: qeth_core_sys.c プロジェクト: 383530895/linux

static ssize_t qeth_dev_layer2_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev_get_drvdata(dev);
	char *tmp;
	int i, rc = 0;
	enum qeth_discipline_id newdis;

	if (!card)
		return -EINVAL;

	mutex_lock(&card->discipline_mutex);
	if (card->state != CARD_STATE_DOWN) {
		rc = -EPERM;
		goto out;
	}

	i = simple_strtoul(buf, &tmp, 16);
	switch (i) {
	case 0:
		newdis = QETH_DISCIPLINE_LAYER3;
		break;
	case 1:
		newdis = QETH_DISCIPLINE_LAYER2;
		break;
	default:
		rc = -EINVAL;
		goto out;
	}

	if (card->options.layer2 == newdis)
		goto out;
	else {
		card->info.mac_bits  = 0;
		if (card->discipline) {
			card->discipline->remove(card->gdev);
			qeth_core_free_discipline(card);
		}
	}

	rc = qeth_core_load_discipline(card, newdis);
	if (rc)
		goto out;

	rc = card->discipline->setup(card->gdev);
out:
	mutex_unlock(&card->discipline_mutex);
	return rc ? rc : count;
}

コード例 #2

ファイル: qeth_core_sys.c プロジェクト: avagin/linux

static ssize_t qeth_dev_layer2_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct qeth_card *card = dev_get_drvdata(dev);
	struct net_device *ndev;
	char *tmp;
	int i, rc = 0;
	enum qeth_discipline_id newdis;

	if (!card)
		return -EINVAL;

	mutex_lock(&card->discipline_mutex);
	if (card->state != CARD_STATE_DOWN) {
		rc = -EPERM;
		goto out;
	}

	i = simple_strtoul(buf, &tmp, 16);
	switch (i) {
	case 0:
		newdis = QETH_DISCIPLINE_LAYER3;
		break;
	case 1:
		newdis = QETH_DISCIPLINE_LAYER2;
		break;
	default:
		rc = -EINVAL;
		goto out;
	}

	if (card->options.layer == newdis)
		goto out;
	if (card->info.layer_enforced) {
		/* fixed layer, can't switch */
		rc = -EOPNOTSUPP;
		goto out;
	}

	if (card->discipline) {
		/* start with a new, pristine netdevice: */
		ndev = qeth_clone_netdev(card->dev);
		if (!ndev) {
			rc = -ENOMEM;
			goto out;
		}

		card->discipline->remove(card->gdev);
		qeth_core_free_discipline(card);
		free_netdev(card->dev);
		card->dev = ndev;
	}

	rc = qeth_core_load_discipline(card, newdis);
	if (rc)
		goto out;

	rc = card->discipline->setup(card->gdev);
	if (rc)
		qeth_core_free_discipline(card);
out:
	mutex_unlock(&card->discipline_mutex);
	return rc ? rc : count;
}