+#define ETH_I40E_SUPPORT_MULTI_DRIVER "support-multi-driver"
+
+static int
+i40e_parse_multi_drv_handler(__rte_unused const char *key,
+ const char *value,
+ void *opaque)
+{
+ struct i40e_pf *pf;
+ unsigned long support_multi_driver;
+ char *end;
+
+ pf = (struct i40e_pf *)opaque;
+
+ errno = 0;
+ support_multi_driver = strtoul(value, &end, 10);
+ if (errno != 0 || end == value || *end != 0) {
+ PMD_DRV_LOG(WARNING, "Wrong global configuration");
+ return -(EINVAL);
+ }
+
+ if (support_multi_driver == 1 || support_multi_driver == 0)
+ pf->support_multi_driver = (bool)support_multi_driver;
+ else
+ PMD_DRV_LOG(WARNING, "%s must be 1 or 0,",
+ "enable global configuration by default."
+ ETH_I40E_SUPPORT_MULTI_DRIVER);
+ return 0;
+}
+
+static int
+i40e_support_multi_driver(struct rte_eth_dev *dev)
+{
+ struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+ static const char *const valid_keys[] = {
+ ETH_I40E_SUPPORT_MULTI_DRIVER, NULL};
+ struct rte_kvargs *kvlist;
+
+ /* Enable global configuration by default */
+ pf->support_multi_driver = false;
+
+ if (!dev->device->devargs)
+ return 0;
+
+ kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
+ if (!kvlist)
+ return -EINVAL;
+
+ if (rte_kvargs_count(kvlist, ETH_I40E_SUPPORT_MULTI_DRIVER) > 1)
+ PMD_DRV_LOG(WARNING, "More than one argument \"%s\" and only "
+ "the first invalid or last valid one is used !",
+ ETH_I40E_SUPPORT_MULTI_DRIVER);
+
+ if (rte_kvargs_process(kvlist, ETH_I40E_SUPPORT_MULTI_DRIVER,
+ i40e_parse_multi_drv_handler, pf) < 0) {
+ rte_kvargs_free(kvlist);
+ return -EINVAL;
+ }
+
+ rte_kvargs_free(kvlist);
+ return 0;
+}
+