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34 #ifndef __INCLUDE_RTE_PORT_IP_FRAG_H__
35 #define __INCLUDE_RTE_PORT_IP_FRAG_H__
43 * RTE Port for IPv4 Fragmentation
45 * This port is built on top of pre-initialized single consumer rte_ring. In
46 * order to minimize the amount of packets stored in the ring at any given
47 * time, the IP fragmentation functionality is executed on ring read operation,
48 * hence this port is implemented as an input port. A regular ring_writer port
49 * can be created to write to the same ring.
51 * The packets written to the ring are either complete IP datagrams or jumbo
52 * frames (i.e. IP packets with length bigger than provided MTU value). The
53 * packets read from the ring are all non-jumbo frames. The complete IP
54 * datagrams written to the ring are not changed. The jumbo frames are
55 * fragmented into several IP packets with length less or equal to MTU.
65 /** ring_reader_ipv4_frag port parameters */
66 struct rte_port_ring_reader_frag_params {
67 /** Underlying single consumer ring that has to be pre-initialized. */
68 struct rte_ring *ring;
70 /** Maximum Transfer Unit (MTU). Maximum IP packet size (in bytes). */
73 /** Size of application dependent meta-data stored per each input packet
74 that has to be copied to each of the fragments originating from the
75 same input IP datagram. */
76 uint32_t metadata_size;
78 /** Pre-initialized buffer pool used for allocating direct buffers for
79 the output fragments. */
80 struct rte_mempool *pool_direct;
82 /** Pre-initialized buffer pool used for allocating indirect buffers for
83 the output fragments. */
84 struct rte_mempool *pool_indirect;
87 #define rte_port_ring_reader_ipv4_frag_params rte_port_ring_reader_frag_params
89 #define rte_port_ring_reader_ipv6_frag_params rte_port_ring_reader_frag_params
91 /** ring_reader_ipv4_frag port operations */
92 extern struct rte_port_in_ops rte_port_ring_reader_ipv4_frag_ops;
94 /** ring_reader_ipv6_frag port operations */
95 extern struct rte_port_in_ops rte_port_ring_reader_ipv6_frag_ops;