295 lines
6.6 KiB
C
295 lines
6.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2016-2017 Intel Corporation
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*/
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#ifndef __IPSEC_H__
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#define __IPSEC_H__
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#include <stdint.h>
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#include <rte_byteorder.h>
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#include <rte_crypto.h>
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#include <rte_security.h>
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#include <rte_flow.h>
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#define RTE_LOGTYPE_IPSEC RTE_LOGTYPE_USER1
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#define RTE_LOGTYPE_IPSEC_ESP RTE_LOGTYPE_USER2
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#define RTE_LOGTYPE_IPSEC_IPIP RTE_LOGTYPE_USER3
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#define MAX_PKT_BURST 32
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#define MAX_INFLIGHT 128
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#define MAX_QP_PER_LCORE 256
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#define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */
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#define IPSEC_OFFLOAD_ESN_SOFTLIMIT 0xffffff00
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#define IV_OFFSET (sizeof(struct rte_crypto_op) + \
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sizeof(struct rte_crypto_sym_op))
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#define uint32_t_to_char(ip, a, b, c, d) do {\
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*a = (uint8_t)(ip >> 24 & 0xff);\
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*b = (uint8_t)(ip >> 16 & 0xff);\
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*c = (uint8_t)(ip >> 8 & 0xff);\
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*d = (uint8_t)(ip & 0xff);\
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} while (0)
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#define DEFAULT_MAX_CATEGORIES 1
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#define IPSEC_SA_MAX_ENTRIES (128) /* must be power of 2, max 2 power 30 */
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#define SPI2IDX(spi) (spi & (IPSEC_SA_MAX_ENTRIES - 1))
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#define INVALID_SPI (0)
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#define DISCARD INVALID_SPI
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#define BYPASS UINT32_MAX
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#define IPSEC_XFORM_MAX 2
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#define IP6_VERSION (6)
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struct rte_crypto_xform;
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struct ipsec_xform;
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struct rte_mbuf;
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struct ipsec_sa;
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typedef int32_t (*ipsec_xform_fn)(struct rte_mbuf *m, struct ipsec_sa *sa,
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struct rte_crypto_op *cop);
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struct ip_addr {
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union {
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uint32_t ip4;
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union {
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uint64_t ip6[2];
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uint8_t ip6_b[16];
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} ip6;
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} ip;
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};
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#define MAX_KEY_SIZE 32
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struct ipsec_sa {
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uint32_t spi;
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uint32_t cdev_id_qp;
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uint64_t seq;
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uint32_t salt;
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union {
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struct rte_cryptodev_sym_session *crypto_session;
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struct rte_security_session *sec_session;
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};
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enum rte_crypto_cipher_algorithm cipher_algo;
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enum rte_crypto_auth_algorithm auth_algo;
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enum rte_crypto_aead_algorithm aead_algo;
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uint16_t digest_len;
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uint16_t iv_len;
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uint16_t block_size;
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uint16_t flags;
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#define IP4_TUNNEL (1 << 0)
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#define IP6_TUNNEL (1 << 1)
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#define TRANSPORT (1 << 2)
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#define IP4_TRANSPORT (1 << 3)
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#define IP6_TRANSPORT (1 << 4)
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struct ip_addr src;
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struct ip_addr dst;
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uint8_t cipher_key[MAX_KEY_SIZE];
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uint16_t cipher_key_len;
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uint8_t auth_key[MAX_KEY_SIZE];
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uint16_t auth_key_len;
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uint16_t aad_len;
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union {
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struct rte_crypto_sym_xform *xforms;
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struct rte_security_ipsec_xform *sec_xform;
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};
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enum rte_security_session_action_type type;
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enum rte_security_ipsec_sa_direction direction;
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uint16_t portid;
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struct rte_security_ctx *security_ctx;
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uint32_t ol_flags;
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#define MAX_RTE_FLOW_PATTERN (4)
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#define MAX_RTE_FLOW_ACTIONS (3)
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struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN];
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struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS];
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struct rte_flow_attr attr;
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union {
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struct rte_flow_item_ipv4 ipv4_spec;
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struct rte_flow_item_ipv6 ipv6_spec;
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};
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struct rte_flow_item_esp esp_spec;
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struct rte_flow *flow;
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struct rte_security_session_conf sess_conf;
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} __rte_cache_aligned;
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struct ipsec_mbuf_metadata {
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struct ipsec_sa *sa;
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struct rte_crypto_op cop;
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struct rte_crypto_sym_op sym_cop;
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uint8_t buf[32];
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} __rte_cache_aligned;
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#define IS_TRANSPORT(flags) ((flags) & TRANSPORT)
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#define IS_TUNNEL(flags) ((flags) & (IP4_TUNNEL | IP6_TUNNEL))
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#define IS_IP4(flags) ((flags) & (IP4_TUNNEL | IP4_TRANSPORT))
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#define IS_IP6(flags) ((flags) & (IP6_TUNNEL | IP6_TRANSPORT))
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#define IS_IP4_TUNNEL(flags) ((flags) & IP4_TUNNEL)
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#define IS_IP6_TUNNEL(flags) ((flags) & IP6_TUNNEL)
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/*
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* Macro for getting ipsec_sa flags statuses without version of protocol
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* used for transport (IP4_TRANSPORT and IP6_TRANSPORT flags).
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*/
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#define WITHOUT_TRANSPORT_VERSION(flags) \
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((flags) & (IP4_TUNNEL | \
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IP6_TUNNEL | \
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TRANSPORT))
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struct cdev_qp {
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uint16_t id;
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uint16_t qp;
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uint16_t in_flight;
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uint16_t len;
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struct rte_crypto_op *buf[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
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};
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struct ipsec_ctx {
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struct rte_hash *cdev_map;
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struct sp_ctx *sp4_ctx;
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struct sp_ctx *sp6_ctx;
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struct sa_ctx *sa_ctx;
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uint16_t nb_qps;
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uint16_t last_qp;
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struct cdev_qp tbl[MAX_QP_PER_LCORE];
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struct rte_mempool *session_pool;
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struct rte_mbuf *ol_pkts[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
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uint16_t ol_pkts_cnt;
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};
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struct cdev_key {
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uint16_t lcore_id;
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uint8_t cipher_algo;
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uint8_t auth_algo;
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uint8_t aead_algo;
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};
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struct socket_ctx {
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struct sa_ctx *sa_in;
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struct sa_ctx *sa_out;
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struct sp_ctx *sp_ip4_in;
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struct sp_ctx *sp_ip4_out;
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struct sp_ctx *sp_ip6_in;
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struct sp_ctx *sp_ip6_out;
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struct rt_ctx *rt_ip4;
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struct rt_ctx *rt_ip6;
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struct rte_mempool *mbuf_pool;
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struct rte_mempool *session_pool;
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};
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struct cnt_blk {
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uint32_t salt;
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uint64_t iv;
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uint32_t cnt;
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} __attribute__((packed));
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uint16_t
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ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
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uint16_t nb_pkts, uint16_t len);
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uint16_t
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ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
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uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len);
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uint16_t
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ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
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uint16_t len);
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uint16_t
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ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
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uint16_t len);
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static inline uint16_t
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ipsec_metadata_size(void)
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{
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return sizeof(struct ipsec_mbuf_metadata);
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}
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static inline struct ipsec_mbuf_metadata *
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get_priv(struct rte_mbuf *m)
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{
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return rte_mbuf_to_priv(m);
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}
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static inline void *
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get_cnt_blk(struct rte_mbuf *m)
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{
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struct ipsec_mbuf_metadata *priv = get_priv(m);
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return &priv->buf[0];
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}
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static inline void *
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get_aad(struct rte_mbuf *m)
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{
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struct ipsec_mbuf_metadata *priv = get_priv(m);
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return &priv->buf[16];
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}
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static inline void *
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get_sym_cop(struct rte_crypto_op *cop)
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{
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return (cop + 1);
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}
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int
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inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx);
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void
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inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
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struct ipsec_sa *sa[], uint16_t nb_pkts);
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void
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outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
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struct ipsec_sa *sa[], uint16_t nb_pkts);
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void
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sp4_init(struct socket_ctx *ctx, int32_t socket_id);
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void
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sp6_init(struct socket_ctx *ctx, int32_t socket_id);
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/*
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* Search through SP rules for given SPI.
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* Returns first rule index if found(greater or equal then zero),
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* or -ENOENT otherwise.
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*/
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int
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sp4_spi_present(uint32_t spi, int inbound, struct ip_addr ip_addr[2],
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uint32_t mask[2]);
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int
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sp6_spi_present(uint32_t spi, int inbound, struct ip_addr ip_addr[2],
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uint32_t mask[2]);
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/*
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* Search through SA entries for given SPI.
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* Returns first entry index if found(greater or equal then zero),
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* or -ENOENT otherwise.
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*/
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int
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sa_spi_present(uint32_t spi, int inbound);
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void
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sa_init(struct socket_ctx *ctx, int32_t socket_id);
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void
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rt_init(struct socket_ctx *ctx, int32_t socket_id);
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void
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enqueue_cop_burst(struct cdev_qp *cqp);
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#endif /* __IPSEC_H__ */
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