1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2018 Intel Corporation 3 */ 4 5 #ifndef _GSO_UDP4_H_ 6 #define _GSO_UDP4_H_ 7 8 #include <stdint.h> 9 10 /** 11 * Segment an UDP/IPv4 packet. This function doesn't check if the input 12 * packet has correct checksums, and doesn't update checksums for output 13 * GSO segments. Furthermore, it doesn't process IP fragment packets. 14 * 15 * @param pkt 16 * The packet mbuf to segment. 17 * @param gso_size 18 * The max length of a GSO segment, measured in bytes. 19 * @param direct_pool 20 * MBUF pool used for allocating direct buffers for output segments. 21 * @param indirect_pool 22 * MBUF pool used for allocating indirect buffers for output segments. 23 * @param pkts_out 24 * Pointer array used to store the MBUF addresses of output GSO 25 * segments, when the function succeeds. If the memory space in 26 * pkts_out is insufficient, it fails and returns -EINVAL. 27 * @param nb_pkts_out 28 * The max number of items that 'pkts_out' can keep. 29 * 30 * @return 31 * - The number of GSO segments filled in pkts_out on success. 32 * - Return -ENOMEM if run out of memory in MBUF pools. 33 * - Return -EINVAL for invalid parameters. 34 */ 35 int gso_udp4_segment(struct rte_mbuf *pkt, 36 uint16_t gso_size, 37 struct rte_mempool *direct_pool, 38 struct rte_mempool *indirect_pool, 39 struct rte_mbuf **pkts_out, 40 uint16_t nb_pkts_out); 41 #endif 42