[PATCH v3 4/7] net/mrvl: check if ppio is initialized

[Tomasz Duszynski <tdu@semihalf.com>]

Uninitialized ppio cannot be passed to MUSDK library routines as
application will crash.

Fix this by first checking whether ppio has been initialized.

Signed-off-by: Tomasz Duszynski <tdu@semihalf.com>
Acked-by: Jianbo Liu <jianbo.liu@arm.com>
---
 drivers/net/mrvl/mrvl_ethdev.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/net/mrvl/mrvl_ethdev.c b/drivers/net/mrvl/mrvl_ethdev.c
index c44a2bc..40f2ead 100644
--- a/drivers/net/mrvl/mrvl_ethdev.c
+++ b/drivers/net/mrvl/mrvl_ethdev.c
@@ -324,6 +324,9 @@ mrvl_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	if (mtu < ETHER_MIN_MTU || mru > MRVL_PKT_SIZE_MAX)
 		return -EINVAL;

+	if (!priv->ppio)
+		return -EPERM;
+
 	ret = pp2_ppio_set_mru(priv->ppio, mru);
 	if (ret)
 		return ret;
@@ -346,6 +349,9 @@ mrvl_dev_set_link_up(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return -EPERM;
+
 	ret = pp2_ppio_enable(priv->ppio);
 	if (ret)
 		return ret;
@@ -378,6 +384,9 @@ mrvl_dev_set_link_down(struct rte_eth_dev *dev)
 {
 	struct mrvl_priv *priv = dev->data->dev_private;

+	if (!priv->ppio)
+		return -EPERM;
+
 	return pp2_ppio_disable(priv->ppio);
 }

@@ -624,6 +633,9 @@ mrvl_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 	struct ifreq req;
 	int ret, fd, link_up;

+	if (!priv->ppio)
+		return -EPERM;
+
 	edata.cmd = ETHTOOL_GSET;

 	strcpy(req.ifr_name, dev->data->name);
@@ -680,6 +692,9 @@ mrvl_promiscuous_enable(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_set_promisc(priv->ppio, 1);
 	if (ret)
 		RTE_LOG(ERR, PMD, "Failed to enable promiscuous mode\n");
@@ -697,6 +712,9 @@ mrvl_allmulticast_enable(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_set_mc_promisc(priv->ppio, 1);
 	if (ret)
 		RTE_LOG(ERR, PMD, "Failed enable all-multicast mode\n");
@@ -714,6 +732,9 @@ mrvl_promiscuous_disable(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_set_promisc(priv->ppio, 0);
 	if (ret)
 		RTE_LOG(ERR, PMD, "Failed to disable promiscuous mode\n");
@@ -731,6 +752,9 @@ mrvl_allmulticast_disable(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_set_mc_promisc(priv->ppio, 0);
 	if (ret)
 		RTE_LOG(ERR, PMD, "Failed to disable all-multicast mode\n");
@@ -751,6 +775,9 @@ mrvl_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
 	char buf[ETHER_ADDR_FMT_SIZE];
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_remove_mac_addr(priv->ppio,
 				       dev->data->mac_addrs[index].addr_bytes);
 	if (ret) {
@@ -787,6 +814,9 @@ mrvl_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
 		/* For setting index 0, mrvl_mac_addr_set() should be used.*/
 		return -1;

+	if (!priv->ppio)
+		return -EPERM;
+
 	/*
 	 * Maximum number of uc addresses can be tuned via kernel module mvpp2x
 	 * parameter uc_filter_max. Maximum number of mc addresses is then
@@ -824,6 +854,9 @@ mrvl_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int ret;

+	if (!priv->ppio)
+		return;
+
 	ret = pp2_ppio_set_mac_addr(priv->ppio, mac_addr->addr_bytes);
 	if (ret) {
 		char buf[ETHER_ADDR_FMT_SIZE];
@@ -851,6 +884,9 @@ mrvl_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 	uint64_t drop_mac = 0;
 	unsigned int i, idx, ret;

+	if (!priv->ppio)
+		return -EPERM;
+
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
 		struct mrvl_rxq *rxq = dev->data->rx_queues[i];
 		struct pp2_ppio_inq_statistics rx_stats;
@@ -943,6 +979,9 @@ mrvl_stats_reset(struct rte_eth_dev *dev)
 	struct mrvl_priv *priv = dev->data->dev_private;
 	int i;

+	if (!priv->ppio)
+		return;
+
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
 		struct mrvl_rxq *rxq = dev->data->rx_queues[i];

@@ -1099,6 +1138,9 @@ mrvl_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 {
 	struct mrvl_priv *priv = dev->data->dev_private;

+	if (!priv->ppio)
+		return -EPERM;
+
 	return on ? pp2_ppio_add_vlan(priv->ppio, vlan_id) :
 		    pp2_ppio_remove_vlan(priv->ppio, vlan_id);
 }
--
2.7.4