1 files changed, 317 insertions, 0 deletions
diff --git a/src/seastar/dpdk/examples/ipsec-secgw/ipsec.h b/src/seastar/dpdk/examples/ipsec-secgw/ipsec.h
new file mode 100644
index 000000000..589398f6f
--- /dev/null
+++ b/src/seastar/dpdk/examples/ipsec-secgw/ipsec.h
@@ -0,0 +1,317 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2017 Intel Corporation
+ */
+
+#ifndef __IPSEC_H__
+#define __IPSEC_H__
+
+#include <stdint.h>
+
+#include <rte_byteorder.h>
+#include <rte_crypto.h>
+#include <rte_security.h>
+#include <rte_flow.h>
+#include <rte_ipsec.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_INFLIGHT 128
+#define MAX_QP_PER_LCORE 256
+
+#define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */
+
+#define IPSEC_OFFLOAD_ESN_SOFTLIMIT 0xffffff00
+
+#define IV_OFFSET		(sizeof(struct rte_crypto_op) + \
+				sizeof(struct rte_crypto_sym_op))
+
+#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	INVALID_SPI
+#define BYPASS	UINT32_MAX
+
+#define IPSEC_XFORM_MAX 2
+
+#define IP6_VERSION (6)
+
+struct rte_crypto_xform;
+struct ipsec_xform;
+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		32
+
+/*
+ * application wide SA parameters
+ */
+struct app_sa_prm {
+	uint32_t enable; /* use librte_ipsec API for ipsec pkt processing */
+	uint32_t window_size; /* replay window size */
+	uint32_t enable_esn;  /* enable/disable ESN support */
+	uint64_t flags;       /* rte_ipsec_sa_prm.flags */
+};
+
+extern struct app_sa_prm app_sa_prm;
+
+struct ipsec_sa {
+	struct rte_ipsec_session ips; /* one session per sa for now */
+	uint32_t spi;
+	uint32_t cdev_id_qp;
+	uint64_t seq;
+	uint32_t salt;
+	union {
+		struct rte_cryptodev_sym_session *crypto_session;
+		struct rte_security_session *sec_session;
+	};
+	enum rte_crypto_cipher_algorithm cipher_algo;
+	enum rte_crypto_auth_algorithm auth_algo;
+	enum rte_crypto_aead_algorithm aead_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;
+	union {
+		struct rte_crypto_sym_xform *xforms;
+		struct rte_security_ipsec_xform *sec_xform;
+	};
+	enum rte_security_session_action_type type;
+	enum rte_security_ipsec_sa_direction direction;
+	uint16_t portid;
+	struct rte_security_ctx *security_ctx;
+	uint32_t ol_flags;
+
+#define MAX_RTE_FLOW_PATTERN (4)
+#define MAX_RTE_FLOW_ACTIONS (3)
+	struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN];
+	struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS];
+	struct rte_flow_attr attr;
+	union {
+		struct rte_flow_item_ipv4 ipv4_spec;
+		struct rte_flow_item_ipv6 ipv6_spec;
+	};
+	struct rte_flow_item_esp esp_spec;
+	struct rte_flow *flow;
+	struct rte_security_session_conf sess_conf;
+} __rte_cache_aligned;
+
+struct ipsec_mbuf_metadata {
+	struct ipsec_sa *sa;
+	struct rte_crypto_op cop;
+	struct rte_crypto_sym_op sym_cop;
+	uint8_t buf[32];
+} __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 rte_mempool *session_pool;
+	struct rte_mempool *session_priv_pool;
+	struct rte_mbuf *ol_pkts[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
+	uint16_t ol_pkts_cnt;
+	uint64_t ipv4_offloads;
+	uint64_t ipv6_offloads;
+};
+
+struct cdev_key {
+	uint16_t lcore_id;
+	uint8_t cipher_algo;
+	uint8_t auth_algo;
+	uint8_t aead_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 rte_mempool *session_pool;
+	struct rte_mempool *session_priv_pool;
+};
+
+struct cnt_blk {
+	uint32_t salt;
+	uint64_t iv;
+	uint32_t cnt;
+} __attribute__((packed));
+
+struct traffic_type {
+	const uint8_t *data[MAX_PKT_BURST * 2];
+	struct rte_mbuf *pkts[MAX_PKT_BURST * 2];
+	struct ipsec_sa *saptr[MAX_PKT_BURST * 2];
+	uint32_t res[MAX_PKT_BURST * 2];
+	uint32_t num;
+};
+
+struct ipsec_traffic {
+	struct traffic_type ipsec;
+	struct traffic_type ip4;
+	struct traffic_type ip6;
+};
+
+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);
+
+uint16_t
+ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+		uint16_t len);
+
+uint16_t
+ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
+		uint16_t len);
+
+void
+ipsec_process(struct ipsec_ctx *ctx, struct ipsec_traffic *trf);
+
+void
+ipsec_cqp_process(struct ipsec_ctx *ctx, struct ipsec_traffic *trf);
+
+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_mbuf_to_priv(m);
+}
+
+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);
+
+/*
+ * Search through SP rules for given SPI.
+ * Returns first rule index if found(greater or equal then zero),
+ * or -ENOENT otherwise.
+ */
+int
+sp4_spi_present(uint32_t spi, int inbound);
+int
+sp6_spi_present(uint32_t spi, int inbound);
+
+/*
+ * Search through SA entries for given SPI.
+ * Returns first entry index if found(greater or equal then zero),
+ * or -ENOENT otherwise.
+ */
+int
+sa_spi_present(uint32_t spi, int inbound);
+
+void
+sa_init(struct socket_ctx *ctx, int32_t socket_id);
+
+void
+rt_init(struct socket_ctx *ctx, int32_t socket_id);
+
+int
+sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
+		uint64_t *tx_offloads);
+
+int
+add_dst_ethaddr(uint16_t port, const struct ether_addr *addr);
+
+void
+enqueue_cop_burst(struct cdev_qp *cqp);
+
+int
+create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa);
+
+#endif /* __IPSEC_H__ */