+/*
+ * Validate offloads that are requested through rte_eth_dev_configure against
+ * the offloads successfuly set by the ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param req_offloads
+ * The offloads that have been requested through `rte_eth_dev_configure`.
+ * @param set_offloads
+ * The offloads successfuly set by the ethernet device.
+ * @param offload_type
+ * The offload type i.e. Rx/Tx string.
+ * @param offload_name
+ * The function that prints the offload name.
+ * @return
+ * - (0) if validation successful.
+ * - (-EINVAL) if requested offload has been silently disabled.
+ *
+ */
+static int
+validate_offloads(uint16_t port_id, uint64_t req_offloads,
+ uint64_t set_offloads, const char *offload_type,
+ const char *(*offload_name)(uint64_t))
+{
+ uint64_t offloads_diff = req_offloads ^ set_offloads;
+ uint64_t offload;
+ int ret = 0;
+
+ while (offloads_diff != 0) {
+ /* Check if any offload is requested but not enabled. */
+ offload = 1ULL << __builtin_ctzll(offloads_diff);
+ if (offload & req_offloads) {
+ RTE_ETHDEV_LOG(ERR,
+ "Port %u failed to enable %s offload %s\n",
+ port_id, offload_type, offload_name(offload));
+ ret = -EINVAL;
+ }
+
+ /* Chech if offload couldn't be disabled. */
+ if (offload & set_offloads) {
+ RTE_ETHDEV_LOG(INFO,
+ "Port %u failed to disable %s offload %s\n",
+ port_id, offload_type, offload_name(offload));
+ }
+
+ offloads_diff &= ~offload;
+ }
+
+ return ret;
+}
+