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/*-
* BSD LICENSE
*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __IPSEC_H__
#define __IPSEC_H__
#include <stdint.h>
#include <rte_byteorder.h>
#include <rte_crypto.h>
#define RTE_LOGTYPE_IPSEC RTE_LOGTYPE_USER1
#define RTE_LOGTYPE_IPSEC_ESP RTE_LOGTYPE_USER2
#define RTE_LOGTYPE_IPSEC_IPIP RTE_LOGTYPE_USER3
#define MAX_PKT_BURST 32
#define MAX_QP_PER_LCORE 256
#define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */
#define uint32_t_to_char(ip, a, b, c, d) do {\
*a = (uint8_t)(ip >> 24 & 0xff);\
*b = (uint8_t)(ip >> 16 & 0xff);\
*c = (uint8_t)(ip >> 8 & 0xff);\
*d = (uint8_t)(ip & 0xff);\
} while (0)
#define DEFAULT_MAX_CATEGORIES 1
#define IPSEC_SA_MAX_ENTRIES (128) /* must be power of 2, max 2 power 30 */
#define SPI2IDX(spi) (spi & (IPSEC_SA_MAX_ENTRIES - 1))
#define INVALID_SPI (0)
#define DISCARD (0x80000000)
#define BYPASS (0x40000000)
#define PROTECT_MASK (0x3fffffff)
#define PROTECT(sa_idx) (SPI2IDX(sa_idx) & PROTECT_MASK) /* SA idx 30 bits */
#define IPSEC_XFORM_MAX 2
#define IP6_VERSION (6)
struct rte_crypto_xform;
struct ipsec_xform;
struct rte_cryptodev_session;
struct rte_mbuf;
struct ipsec_sa;
typedef int32_t (*ipsec_xform_fn)(struct rte_mbuf *m, struct ipsec_sa *sa,
struct rte_crypto_op *cop);
struct ip_addr {
union {
uint32_t ip4;
union {
uint64_t ip6[2];
uint8_t ip6_b[16];
} ip6;
} ip;
};
#define MAX_KEY_SIZE 20
struct ipsec_sa {
uint32_t spi;
uint32_t cdev_id_qp;
uint64_t seq;
uint32_t salt;
struct rte_cryptodev_sym_session *crypto_session;
enum rte_crypto_cipher_algorithm cipher_algo;
enum rte_crypto_auth_algorithm auth_algo;
uint16_t digest_len;
uint16_t iv_len;
uint16_t block_size;
uint16_t flags;
#define IP4_TUNNEL (1 << 0)
#define IP6_TUNNEL (1 << 1)
#define TRANSPORT (1 << 2)
struct ip_addr src;
struct ip_addr dst;
uint8_t cipher_key[MAX_KEY_SIZE];
uint16_t cipher_key_len;
uint8_t auth_key[MAX_KEY_SIZE];
uint16_t auth_key_len;
uint16_t aad_len;
struct rte_crypto_sym_xform *xforms;
} __rte_cache_aligned;
struct ipsec_mbuf_metadata {
uint8_t buf[32];
struct ipsec_sa *sa;
struct rte_crypto_op cop;
struct rte_crypto_sym_op sym_cop;
} __rte_cache_aligned;
struct cdev_qp {
uint16_t id;
uint16_t qp;
uint16_t in_flight;
uint16_t len;
struct rte_crypto_op *buf[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
};
struct ipsec_ctx {
struct rte_hash *cdev_map;
struct sp_ctx *sp4_ctx;
struct sp_ctx *sp6_ctx;
struct sa_ctx *sa_ctx;
uint16_t nb_qps;
uint16_t last_qp;
struct cdev_qp tbl[MAX_QP_PER_LCORE];
};
struct cdev_key {
uint16_t lcore_id;
uint8_t cipher_algo;
uint8_t auth_algo;
};
struct socket_ctx {
struct sa_ctx *sa_in;
struct sa_ctx *sa_out;
struct sp_ctx *sp_ip4_in;
struct sp_ctx *sp_ip4_out;
struct sp_ctx *sp_ip6_in;
struct sp_ctx *sp_ip6_out;
struct rt_ctx *rt_ip4;
struct rt_ctx *rt_ip6;
struct rte_mempool *mbuf_pool;
};
struct cnt_blk {
uint32_t salt;
uint64_t iv;
uint32_t cnt;
} __attribute__((packed));
uint16_t
ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
uint16_t nb_pkts, uint16_t len);
uint16_t
ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len);
static inline uint16_t
ipsec_metadata_size(void)
{
return sizeof(struct ipsec_mbuf_metadata);
}
static inline struct ipsec_mbuf_metadata *
get_priv(struct rte_mbuf *m)
{
return RTE_PTR_ADD(m, sizeof(struct rte_mbuf));
}
static inline void *
get_cnt_blk(struct rte_mbuf *m)
{
struct ipsec_mbuf_metadata *priv = get_priv(m);
return &priv->buf[0];
}
static inline void *
get_aad(struct rte_mbuf *m)
{
struct ipsec_mbuf_metadata *priv = get_priv(m);
return &priv->buf[16];
}
static inline void *
get_sym_cop(struct rte_crypto_op *cop)
{
return (cop + 1);
}
int
inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx);
void
inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
struct ipsec_sa *sa[], uint16_t nb_pkts);
void
outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
struct ipsec_sa *sa[], uint16_t nb_pkts);
void
sp4_init(struct socket_ctx *ctx, int32_t socket_id);
void
sp6_init(struct socket_ctx *ctx, int32_t socket_id);
void
sa_init(struct socket_ctx *ctx, int32_t socket_id);
void
rt_init(struct socket_ctx *ctx, int32_t socket_id);
#endif /* __IPSEC_H__ */
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