369991d997
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef __INCLUDE_RTE_PORT_IP_FRAG_H__
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#define __INCLUDE_RTE_PORT_IP_FRAG_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @file
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* RTE Port for IPv4 Fragmentation
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*
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* This port is built on top of pre-initialized single consumer rte_ring. In
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* order to minimize the amount of packets stored in the ring at any given
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* time, the IP fragmentation functionality is executed on ring read operation,
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* hence this port is implemented as an input port. A regular ring_writer port
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* can be created to write to the same ring.
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*
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* The packets written to the ring are either complete IP datagrams or jumbo
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* frames (i.e. IP packets with length bigger than provided MTU value). The
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* packets read from the ring are all non-jumbo frames. The complete IP
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* datagrams written to the ring are not changed. The jumbo frames are
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* fragmented into several IP packets with length less or equal to MTU.
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*
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***/
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#include <stdint.h>
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#include <rte_ring.h>
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#include "rte_port.h"
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/** ring_reader_ipv4_frag port parameters */
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struct rte_port_ring_reader_frag_params {
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/** Underlying single consumer ring that has to be pre-initialized. */
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struct rte_ring *ring;
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/** Maximum Transfer Unit (MTU). Maximum IP packet size (in bytes). */
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uint32_t mtu;
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/** Size of application dependent meta-data stored per each input packet
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that has to be copied to each of the fragments originating from the
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same input IP datagram. */
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uint32_t metadata_size;
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/** Pre-initialized buffer pool used for allocating direct buffers for
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the output fragments. */
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struct rte_mempool *pool_direct;
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/** Pre-initialized buffer pool used for allocating indirect buffers for
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the output fragments. */
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struct rte_mempool *pool_indirect;
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};
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#define rte_port_ring_reader_ipv4_frag_params rte_port_ring_reader_frag_params
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#define rte_port_ring_reader_ipv6_frag_params rte_port_ring_reader_frag_params
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/** ring_reader_ipv4_frag port operations */
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extern struct rte_port_in_ops rte_port_ring_reader_ipv4_frag_ops;
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/** ring_reader_ipv6_frag port operations */
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extern struct rte_port_in_ops rte_port_ring_reader_ipv6_frag_ops;
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#ifdef __cplusplus
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}
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#endif
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#endif
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