6d13ea8e8e
Add 'rte_' prefix to structures: - rename struct ether_addr as struct rte_ether_addr. - rename struct ether_hdr as struct rte_ether_hdr. - rename struct vlan_hdr as struct rte_vlan_hdr. - rename struct vxlan_hdr as struct rte_vxlan_hdr. - rename struct vxlan_gpe_hdr as struct rte_vxlan_gpe_hdr. Do not update the command line library to avoid adding a dependency to librte_net. Signed-off-by: Olivier Matz <olivier.matz@6wind.com> Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2018 Intel Corporation
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*/
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#ifndef _GRO_VXLAN_TCP4_H_
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#define _GRO_VXLAN_TCP4_H_
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#include "gro_tcp4.h"
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#define GRO_VXLAN_TCP4_TBL_MAX_ITEM_NUM (1024UL * 1024UL)
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/* Header fields representing a VxLAN flow */
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struct vxlan_tcp4_flow_key {
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struct tcp4_flow_key inner_key;
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struct rte_vxlan_hdr vxlan_hdr;
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struct rte_ether_addr outer_eth_saddr;
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struct rte_ether_addr outer_eth_daddr;
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uint32_t outer_ip_src_addr;
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uint32_t outer_ip_dst_addr;
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/* Outer UDP ports */
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uint16_t outer_src_port;
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uint16_t outer_dst_port;
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};
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struct gro_vxlan_tcp4_flow {
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struct vxlan_tcp4_flow_key key;
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/*
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* The index of the first packet in the flow. INVALID_ARRAY_INDEX
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* indicates an empty flow.
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*/
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uint32_t start_index;
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};
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struct gro_vxlan_tcp4_item {
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struct gro_tcp4_item inner_item;
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/* IPv4 ID in the outer IPv4 header */
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uint16_t outer_ip_id;
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/* Indicate if outer IPv4 ID can be ignored */
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uint8_t outer_is_atomic;
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};
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/*
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* VxLAN (with an outer IPv4 header and an inner TCP/IPv4 packet)
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* reassembly table structure
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*/
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struct gro_vxlan_tcp4_tbl {
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/* item array */
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struct gro_vxlan_tcp4_item *items;
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/* flow array */
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struct gro_vxlan_tcp4_flow *flows;
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/* current item number */
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uint32_t item_num;
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/* current flow number */
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uint32_t flow_num;
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/* the maximum item number */
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uint32_t max_item_num;
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/* the maximum flow number */
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uint32_t max_flow_num;
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};
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/**
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* This function creates a VxLAN reassembly table for VxLAN packets
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* which have an outer IPv4 header and an inner TCP/IPv4 packet.
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*
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* @param socket_id
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* Socket index for allocating the table
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* @param max_flow_num
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* The maximum number of flows in the table
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* @param max_item_per_flow
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* The maximum number of packets per flow
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*
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* @return
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* - Return the table pointer on success.
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* - Return NULL on failure.
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*/
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void *gro_vxlan_tcp4_tbl_create(uint16_t socket_id,
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uint16_t max_flow_num,
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uint16_t max_item_per_flow);
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/**
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* This function destroys a VxLAN reassembly table.
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*
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* @param tbl
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* Pointer pointing to the VxLAN reassembly table
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*/
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void gro_vxlan_tcp4_tbl_destroy(void *tbl);
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/**
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* This function merges a VxLAN packet which has an outer IPv4 header and
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* an inner TCP/IPv4 packet. It doesn't process the packet, whose TCP
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* header has SYN, FIN, RST, PSH, CWR, ECE or URG bit set, or which
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* doesn't have payload.
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*
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* This function doesn't check if the packet has correct checksums and
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* doesn't re-calculate checksums for the merged packet. Additionally,
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* it assumes the packets are complete (i.e., MF==0 && frag_off==0), when
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* IP fragmentation is possible (i.e., DF==0). It returns the packet, if
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* the packet has invalid parameters (e.g. SYN bit is set) or there is no
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* available space in the table.
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*
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* @param pkt
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* Packet to reassemble
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* @param tbl
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* Pointer pointing to the VxLAN reassembly table
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* @start_time
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* The time when the packet is inserted into the table
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*
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* @return
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* - Return a positive value if the packet is merged.
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* - Return zero if the packet isn't merged but stored in the table.
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* - Return a negative value for invalid parameters or no available
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* space in the table.
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*/
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int32_t gro_vxlan_tcp4_reassemble(struct rte_mbuf *pkt,
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struct gro_vxlan_tcp4_tbl *tbl,
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uint64_t start_time);
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/**
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* This function flushes timeout packets in the VxLAN reassembly table,
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* and without updating checksums.
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*
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* @param tbl
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* Pointer pointing to a VxLAN GRO table
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* @param flush_timestamp
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* This function flushes packets which are inserted into the table
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* before or at the flush_timestamp.
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* @param out
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* Pointer array used to keep flushed packets
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* @param nb_out
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* The element number in 'out'. It also determines the maximum number of
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* packets that can be flushed finally.
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*
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* @return
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* The number of flushed packets
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*/
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uint16_t gro_vxlan_tcp4_tbl_timeout_flush(struct gro_vxlan_tcp4_tbl *tbl,
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uint64_t flush_timestamp,
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struct rte_mbuf **out,
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uint16_t nb_out);
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/**
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* This function returns the number of the packets in a VxLAN
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* reassembly table.
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*
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* @param tbl
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* Pointer pointing to the VxLAN reassembly table
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*
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* @return
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* The number of packets in the table
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*/
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uint32_t gro_vxlan_tcp4_tbl_pkt_count(void *tbl);
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#endif
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