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RDMA/ocrdma: Don't call vlan_dev_real_dev() for non-VLAN netdevs

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If CONFIG_VLAN_8021Q is not set, then vlan_dev_real_dev() just goes BUG(),
so we shouldn't call it unless we're actually dealing with a VLAN netdev.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Roland Dreier 2012-08-10 16:52:13 -07:00
parent 0d7614f09c
commit d549f55f2e
1 changed files with 8 additions and 8 deletions
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16
drivers/infiniband/hw/ocrdma/ocrdma_main.c
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@ -161,7 +161,7 @@ static void ocrdma_add_default_sgid(struct ocrdma_dev *dev)
ocrdma_get_guid(dev, &sgid->raw[8]);
}
#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#if IS_ENABLED(CONFIG_VLAN_8021Q)
static void ocrdma_add_vlan_sgids(struct ocrdma_dev *dev)
{
struct net_device *netdev, *tmp;
@ -202,14 +202,13 @@ static int ocrdma_build_sgid_tbl(struct ocrdma_dev *dev)
return 0;
}
#if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_VLAN_8021Q)
#if IS_ENABLED(CONFIG_IPV6)
static int ocrdma_inet6addr_event(struct notifier_block *notifier,
unsigned long event, void *ptr)
{
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
struct net_device *event_netdev = ifa->idev->dev;
struct net_device *netdev = NULL;
struct net_device *netdev = ifa->idev->dev;
struct ib_event gid_event;
struct ocrdma_dev *dev;
bool found = false;
@ -217,11 +216,12 @@ static int ocrdma_inet6addr_event(struct notifier_block *notifier,
bool is_vlan = false;
u16 vid = 0;
netdev = vlan_dev_real_dev(event_netdev);
if (netdev != event_netdev) {
is_vlan = true;
vid = vlan_dev_vlan_id(event_netdev);
is_vlan = netdev->priv_flags & IFF_802_1Q_VLAN;
if (is_vlan) {
vid = vlan_dev_vlan_id(netdev);
netdev = vlan_dev_real_dev(netdev);
}
rcu_read_lock();
list_for_each_entry_rcu(dev, &ocrdma_dev_list, entry) {
if (dev->nic_info.netdev == netdev) {