diff options
Diffstat (limited to 'lib/dpif.c')
| -rw-r--r-- | lib/dpif.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -68,6 +68,7 @@ struct registered_dpif_class { int refcount; }; static struct shash dpif_classes = SHASH_INITIALIZER(&dpif_classes); +static struct sset dpif_blacklist = SSET_INITIALIZER(&dpif_blacklist); /* Rate limit for individual messages going to or from the datapath, output at * DBG level. This is very high because, if these are enabled, it is because @@ -108,6 +109,12 @@ dp_register_provider(const struct dpif_class *new_class) { struct registered_dpif_class *registered_class; + if (sset_contains(&dpif_blacklist, new_class->type)) { + VLOG_DBG("attempted to register blacklisted provider: %s", + new_class->type); + return EINVAL; + } + if (shash_find(&dpif_classes, new_class->type)) { VLOG_WARN("attempted to register duplicate datapath provider: %s", new_class->type); @@ -151,6 +158,14 @@ dp_unregister_provider(const char *type) return 0; } +/* Blacklists a provider. Causes future calls of dp_register_provider() with + * a dpif_class which implements 'type' to fail. */ +void +dp_blacklist_provider(const char *type) +{ + sset_add(&dpif_blacklist, type); +} + /* Clears 'types' and enumerates the types of all currently registered datapath * providers into it. The caller must first initialize the sset. */ void |