tcp_session_table.h

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/*
 * Copyright (c) 2023 NVIDIA CORPORATION AND AFFILIATES.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
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 *       conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of
 *       conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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#ifndef DOCA_GPU_PACKET_PROCESSING_TCP_SESSION_H
#define DOCA_GPU_PACKET_PROCESSING_TCP_SESSION_H
 
#include <stdint.h>
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_hash.h>
 
#define TCP_SESSION_MAX_ENTRIES 4096
 
/* TCP session key */
struct tcp_session_key {
    rte_be32_t src_addr; /* TCP session key src addr */
    rte_be32_t dst_addr; /* TCP session key dst addr */
    rte_be16_t src_port; /* TCP session key src port */
    rte_be16_t dst_port; /* TCP session key dst port */
};
 
/* TCP session entry */
struct tcp_session_entry {
    struct tcp_session_key key;    /* TCP session key */
    struct doca_flow_pipe_entry *flow; /* TCP session key DOCA flow entry */
};
 
/* TCP session params */
extern struct rte_hash_parameters tcp_session_ht_params;
/* TCP session table */
extern struct rte_hash *tcp_session_table;
 
/*
 * TCP session table CRC
 *
 * @data [in]: Network card PCIe address
 * @data_len [in]: DOCA device
 * @init_val [in]: DPDK port id associated with the DOCA device
 * @return: 0 on success and 1 otherwise
 */
uint32_t tcp_session_table_crc(const void *data, uint32_t data_len, uint32_t init_val);
 
/*
 * TCP session table CRC
 *
 * @key [in]: TCP session table key
 * @return: ptr on success and NULL otherwise
 */
struct tcp_session_entry *tcp_session_table_find(struct tcp_session_key *key);
 
/*
 * TCP session table CRC
 *
 * @entry [in]: TCP session table key
 */
void tcp_session_table_delete(struct tcp_session_entry *entry);
 
/*
 * Establish new TCP session
 *
 * @key [in]: TCP session table key
 * @return: ptr on success and NULL otherwise
 */
struct tcp_session_entry *tcp_session_table_new(struct tcp_session_key *key);
 
#endif