99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2020 Inspur Corporation
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*/
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#ifndef _GSO_TUNNEL_UDP4_H_
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#define _GSO_TUNNEL_UDP4_H_
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#include <stdint.h>
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#include <rte_mbuf.h>
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/**
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* Segment a tunneling packet with inner UDP/IPv4 headers. This function
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* does not check if the input packet has correct checksums, and does not
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* update checksums for output GSO segments. Furthermore, it does not
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* process IP fragment packets.
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*
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* @param pkt
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* The packet mbuf to segment.
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* @param gso_size
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* The max length of a GSO segment, measured in bytes.
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* @param direct_pool
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* MBUF pool used for allocating direct buffers for output segments.
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* @param indirect_pool
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* MBUF pool used for allocating indirect buffers for output segments.
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* @param pkts_out
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* Pointer array used to store the MBUF addresses of output GSO
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* segments, when it succeeds. If the memory space in pkts_out is
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* insufficient, it fails and returns -EINVAL.
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* @param nb_pkts_out
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* The max number of items that 'pkts_out' can keep.
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*
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* @return
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* - The number of GSO segments filled in pkts_out on success.
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* - Return 0 if it needn't GSO.
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* - Return -ENOMEM if run out of memory in MBUF pools.
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* - Return -EINVAL for invalid parameters.
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*/
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int gso_tunnel_udp4_segment(struct rte_mbuf *pkt,
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uint16_t gso_size,
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struct rte_mempool *direct_pool,
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struct rte_mempool *indirect_pool,
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struct rte_mbuf **pkts_out,
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uint16_t nb_pkts_out);
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#endif
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