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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018-2020 Intel Corporation
*/
#ifndef _SA_H_
#define _SA_H_
#include <rte_rwlock.h>
#define IPSEC_MAX_HDR_SIZE 64
#define IPSEC_MAX_IV_SIZE 16
#define IPSEC_MAX_IV_QWORD (IPSEC_MAX_IV_SIZE / sizeof(uint64_t))
#define TUN_HDR_MSK (RTE_IPSEC_SATP_ECN_MASK | RTE_IPSEC_SATP_DSCP_MASK)
/* padding alignment for different algorithms */
enum {
IPSEC_PAD_DEFAULT = 4,
IPSEC_PAD_3DES_CBC = 8,
IPSEC_PAD_AES_CBC = IPSEC_MAX_IV_SIZE,
IPSEC_PAD_AES_CTR = IPSEC_PAD_DEFAULT,
IPSEC_PAD_AES_GCM = IPSEC_PAD_DEFAULT,
IPSEC_PAD_NULL = IPSEC_PAD_DEFAULT,
};
/* iv sizes for different algorithms */
enum {
IPSEC_IV_SIZE_DEFAULT = IPSEC_MAX_IV_SIZE,
IPSEC_AES_CTR_IV_SIZE = sizeof(uint64_t),
/* TripleDES supports IV size of 32bits or 64bits but he library
* only supports 64bits.
*/
IPSEC_3DES_IV_SIZE = sizeof(uint64_t),
};
/* these definitions probably has to be in rte_crypto_sym.h */
union sym_op_ofslen {
uint64_t raw;
struct {
uint32_t offset;
uint32_t length;
};
};
union sym_op_data {
#ifdef __SIZEOF_INT128__
__uint128_t raw;
#endif
struct {
uint8_t *va;
rte_iova_t pa;
};
};
#define REPLAY_SQN_NUM 2
#define REPLAY_SQN_NEXT(n) ((n) ^ 1)
struct replay_sqn {
rte_rwlock_t rwl;
uint64_t sqn;
__extension__ uint64_t window[0];
};
/*IPSEC SA supported algorithms */
enum sa_algo_type {
ALGO_TYPE_NULL = 0,
ALGO_TYPE_3DES_CBC,
ALGO_TYPE_AES_CBC,
ALGO_TYPE_AES_CTR,
ALGO_TYPE_AES_GCM,
ALGO_TYPE_MAX
};
struct rte_ipsec_sa {
uint64_t type; /* type of given SA */
uint64_t udata; /* user defined */
uint32_t size; /* size of given sa object */
uint32_t spi;
/* sqn calculations related */
uint64_t sqn_mask;
struct {
uint32_t win_sz;
uint16_t nb_bucket;
uint16_t bucket_index_mask;
} replay;
/* template for crypto op fields */
struct {
union sym_op_ofslen cipher;
union sym_op_ofslen auth;
} ctp;
/* cpu-crypto offsets */
union rte_crypto_sym_ofs cofs;
/* tx_offload template for tunnel mbuf */
struct {
uint64_t msk;
uint64_t val;
} tx_offload;
uint32_t salt;
uint8_t algo_type;
uint8_t proto; /* next proto */
uint8_t aad_len;
uint8_t hdr_len;
uint8_t hdr_l3_off;
uint8_t icv_len;
uint8_t sqh_len;
uint8_t iv_ofs; /* offset for algo-specific IV inside crypto op */
uint8_t iv_len;
uint8_t pad_align;
uint8_t tos_mask;
/* template for tunnel header */
uint8_t hdr[IPSEC_MAX_HDR_SIZE];
/*
* sqn and replay window
* In case of SA handled by multiple threads *sqn* cacheline
* could be shared by multiple cores.
* To minimise performance impact, we try to locate in a separate
* place from other frequently accesed data.
*/
union {
uint64_t outb;
struct {
uint32_t rdidx; /* read index */
uint32_t wridx; /* write index */
struct replay_sqn *rsn[REPLAY_SQN_NUM];
} inb;
} sqn;
} __rte_cache_aligned;
int
ipsec_sa_pkt_func_select(const struct rte_ipsec_session *ss,
const struct rte_ipsec_sa *sa, struct rte_ipsec_sa_pkt_func *pf);
/* inbound processing */
uint16_t
esp_inb_pkt_prepare(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
struct rte_crypto_op *cop[], uint16_t num);
uint16_t
esp_inb_tun_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
inline_inb_tun_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
esp_inb_trs_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
inline_inb_trs_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
cpu_inb_pkt_prepare(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
/* outbound processing */
uint16_t
esp_outb_tun_prepare(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
struct rte_crypto_op *cop[], uint16_t num);
uint16_t
esp_outb_trs_prepare(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
struct rte_crypto_op *cop[], uint16_t num);
uint16_t
esp_outb_sqh_process(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
uint16_t num);
uint16_t
pkt_flag_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
inline_outb_tun_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
inline_outb_trs_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
inline_proto_outb_pkt_process(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
cpu_outb_tun_pkt_prepare(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
uint16_t
cpu_outb_trs_pkt_prepare(const struct rte_ipsec_session *ss,
struct rte_mbuf *mb[], uint16_t num);
#endif /* _SA_H_ */
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