The get_in6() API defined in netdev-provider.h requires the return
of error values when the 'netdev' has no assigned IPv6 address or
the 'netdev' does not support IPv6. However, the netdev_linux_get_in6()
implementation does not follow this (always return 0). And this
causes the a bug in deleting vlan interfaces created for vlan
splinter.
This commit makes netdev_linux_get_in6() conform to the API definition
and returns the specified error value when failing to get IPv6 address.
VMware-BZ: #
1485521
Reported-by: Ronald Lee <ronaldlee@vmware.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
int netdev_policing_error; /* Cached error code from set policing. */
int get_features_error; /* Cached error code from ETHTOOL_GSET. */
int get_ifindex_error; /* Cached error code from SIOCGIFINDEX. */
int netdev_policing_error; /* Cached error code from set policing. */
int get_features_error; /* Cached error code from ETHTOOL_GSET. */
int get_ifindex_error; /* Cached error code from SIOCGIFINDEX. */
+ int in6_error; /* Cached error code from reading in6 addr. */
enum netdev_features current; /* Cached from ETHTOOL_GSET. */
enum netdev_features advertised; /* Cached from ETHTOOL_GSET. */
enum netdev_features current; /* Cached from ETHTOOL_GSET. */
enum netdev_features advertised; /* Cached from ETHTOOL_GSET. */
-/* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address (if
- * 'in6' is non-null) and returns true. Otherwise, returns false. */
+/* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address.
+ * Otherwise, sets '*in6' to 'in6addr_any' and returns the corresponding
+ * error. */
static int
netdev_linux_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
{
struct netdev_linux *netdev = netdev_linux_cast(netdev_);
static int
netdev_linux_get_in6(const struct netdev *netdev_, struct in6_addr *in6)
{
struct netdev_linux *netdev = netdev_linux_cast(netdev_);
ovs_mutex_lock(&netdev->mutex);
if (!(netdev->cache_valid & VALID_IN6)) {
ovs_mutex_lock(&netdev->mutex);
if (!(netdev->cache_valid & VALID_IN6)) {
char line[128];
netdev->in6 = in6addr_any;
char line[128];
netdev->in6 = in6addr_any;
+ netdev->in6_error = EADDRNOTAVAIL;
file = fopen("/proc/net/if_inet6", "r");
if (file != NULL) {
file = fopen("/proc/net/if_inet6", "r");
if (file != NULL) {
&& !strcmp(name, ifname))
{
netdev->in6 = in6_tmp;
&& !strcmp(name, ifname))
{
netdev->in6 = in6_tmp;
+ } else {
+ netdev->in6_error = EOPNOTSUPP;
}
netdev->cache_valid |= VALID_IN6;
}
*in6 = netdev->in6;
}
netdev->cache_valid |= VALID_IN6;
}
*in6 = netdev->in6;
+ error = netdev->in6_error;
ovs_mutex_unlock(&netdev->mutex);
ovs_mutex_unlock(&netdev->mutex);