9ec4f0900b
This port presents the IPv4 fragmentation operation as a Packet Framework port. Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com> Acked-by: Pablo de Lara Guarch <pablo.de.lara.guarch@intel.com> Acked by: Ivan Boule <ivan.boule@6wind.com> [Thomas: update to new ip_frag library] Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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_ipv4_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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/** 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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#ifdef __cplusplus
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}
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#endif
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#endif
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