1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2020 Inspur Corporation
5 #ifndef _GSO_TUNNEL_UDP4_H_
6 #define _GSO_TUNNEL_UDP4_H_
11 * Segment a tunneling packet with inner UDP/IPv4 headers. This function
12 * does not check if the input packet has correct checksums, and does not
13 * update checksums for output GSO segments. Furthermore, it does not
14 * process IP fragment packets.
17 * The packet mbuf to segment.
19 * The max length of a GSO segment, measured in bytes.
21 * MBUF pool used for allocating direct buffers for output segments.
22 * @param indirect_pool
23 * MBUF pool used for allocating indirect buffers for output segments.
25 * Pointer array used to store the MBUF addresses of output GSO
26 * segments, when it succeeds. If the memory space in pkts_out is
27 * insufficient, it fails and returns -EINVAL.
29 * The max number of items that 'pkts_out' can keep.
32 * - The number of GSO segments filled in pkts_out on success.
33 * - Return 0 if it needn't GSO.
34 * - Return -ENOMEM if run out of memory in MBUF pools.
35 * - Return -EINVAL for invalid parameters.
37 int gso_tunnel_udp4_segment(struct rte_mbuf *pkt,
39 struct rte_mempool *direct_pool,
40 struct rte_mempool *indirect_pool,
41 struct rte_mbuf **pkts_out,
42 uint16_t nb_pkts_out);