1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
5 #ifndef _GSO_TUNNEL_TCP4_H_
6 #define _GSO_TUNNEL_TCP4_H_
12 * Segment a tunneling packet with inner TCP/IPv4 headers. This function
13 * doesn't check if the input packet has correct checksums, and doesn't
14 * update checksums for output GSO segments. Furthermore, it doesn't
15 * process IP fragment packets.
18 * The packet mbuf to segment.
20 * The max length of a GSO segment, measured in bytes.
22 * The increasing unit of IP ids.
24 * MBUF pool used for allocating direct buffers for output segments.
25 * @param indirect_pool
26 * MBUF pool used for allocating indirect buffers for output segments.
28 * Pointer array used to store the MBUF addresses of output GSO
29 * segments, when it succeeds. If the memory space in pkts_out is
30 * insufficient, it fails and returns -EINVAL.
32 * The max number of items that 'pkts_out' can keep.
35 * - The number of GSO segments filled in pkts_out on success.
36 * - Return -ENOMEM if run out of memory in MBUF pools.
37 * - Return -EINVAL for invalid parameters.
39 int gso_tunnel_tcp4_segment(struct rte_mbuf *pkt,
42 struct rte_mempool *direct_pool,
43 struct rte_mempool *indirect_pool,
44 struct rte_mbuf **pkts_out,
45 uint16_t nb_pkts_out);