+static int
+check_for_ext(struct ark_adapter *ark)
+{
+ int found = 0;
+
+ /* Get the env */
+ const char *dllpath = getenv("ARK_EXT_PATH");
+
+ if (dllpath == NULL) {
+ PMD_DEBUG_LOG(DEBUG, "ARK EXT NO dll path specified\n");
+ return 0;
+ }
+ PMD_DRV_LOG(INFO, "ARK EXT found dll path at %s\n", dllpath);
+
+ /* Open and load the .so */
+ ark->d_handle = dlopen(dllpath, RTLD_LOCAL | RTLD_LAZY);
+ if (ark->d_handle == NULL) {
+ PMD_DRV_LOG(ERR, "Could not load user extension %s\n",
+ dllpath);
+ return -1;
+ }
+ PMD_DRV_LOG(INFO, "SUCCESS: loaded user extension %s\n",
+ dllpath);
+
+ /* Get the entry points */
+ ark->user_ext.dev_init =
+ (void *(*)(struct rte_eth_dev *, void *, int))
+ dlsym(ark->d_handle, "dev_init");
+ PMD_DEBUG_LOG(DEBUG, "device ext init pointer = %p\n",
+ ark->user_ext.dev_init);
+ ark->user_ext.dev_get_port_count =
+ (int (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_get_port_count");
+ ark->user_ext.dev_uninit =
+ (void (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_uninit");
+ ark->user_ext.dev_configure =
+ (int (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_configure");
+ ark->user_ext.dev_start =
+ (int (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_start");
+ ark->user_ext.dev_stop =
+ (void (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_stop");
+ ark->user_ext.dev_close =
+ (void (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_close");
+ ark->user_ext.link_update =
+ (int (*)(struct rte_eth_dev *, int, void *))
+ dlsym(ark->d_handle, "link_update");
+ ark->user_ext.dev_set_link_up =
+ (int (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_set_link_up");
+ ark->user_ext.dev_set_link_down =
+ (int (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "dev_set_link_down");
+ ark->user_ext.stats_get =
+ (void (*)(struct rte_eth_dev *, struct rte_eth_stats *,
+ void *))
+ dlsym(ark->d_handle, "stats_get");
+ ark->user_ext.stats_reset =
+ (void (*)(struct rte_eth_dev *, void *))
+ dlsym(ark->d_handle, "stats_reset");
+ ark->user_ext.mac_addr_add =
+ (void (*)(struct rte_eth_dev *, struct ether_addr *, uint32_t,
+ uint32_t, void *))
+ dlsym(ark->d_handle, "mac_addr_add");
+ ark->user_ext.mac_addr_remove =
+ (void (*)(struct rte_eth_dev *, uint32_t, void *))
+ dlsym(ark->d_handle, "mac_addr_remove");
+ ark->user_ext.mac_addr_set =
+ (void (*)(struct rte_eth_dev *, struct ether_addr *,
+ void *))
+ dlsym(ark->d_handle, "mac_addr_set");
+
+ return found;
+}
+