ceph/src/spdk/dpdk/examples/ipsec-secgw/ipsec.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 #ifndef __IPSEC_H__
   6 #define __IPSEC_H__
   7
   8 #include <stdint.h>
   9
  10 #include <rte_byteorder.h>
  11 #include <rte_crypto.h>
  12 #include <rte_security.h>
  13 #include <rte_flow.h>
  14 #include <rte_ipsec.h>
  15
  16 #include "ipsec-secgw.h"
  17
  18 #define RTE_LOGTYPE_IPSEC_ESP   RTE_LOGTYPE_USER2
  19 #define RTE_LOGTYPE_IPSEC_IPIP  RTE_LOGTYPE_USER3
  20
  21 #define MAX_INFLIGHT 128
  22 #define MAX_QP_PER_LCORE 256
  23
  24 #define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */
  25
  26 #define IPSEC_OFFLOAD_ESN_SOFTLIMIT 0xffffff00
  27
  28 #define IV_OFFSET               (sizeof(struct rte_crypto_op) + \
  29                                 sizeof(struct rte_crypto_sym_op))
  30
  31 #define uint32_t_to_char(ip, a, b, c, d) do {\
  32                 *a = (uint8_t)(ip >> 24 & 0xff);\
  33                 *b = (uint8_t)(ip >> 16 & 0xff);\
  34                 *c = (uint8_t)(ip >> 8 & 0xff);\
  35                 *d = (uint8_t)(ip & 0xff);\
  36         } while (0)
  37
  38 #define DEFAULT_MAX_CATEGORIES  1
  39
  40 #define INVALID_SPI (0)
  41
  42 #define DISCARD INVALID_SPI
  43 #define BYPASS  UINT32_MAX
  44
  45 #define IPSEC_XFORM_MAX 2
  46
  47 #define IP6_VERSION (6)
  48
  49 struct rte_crypto_xform;
  50 struct ipsec_xform;
  51 struct rte_mbuf;
  52
  53 struct ipsec_sa;
  54 /*
  55  * Keeps number of configured SA's for each address family:
  56  */
  57 struct ipsec_sa_cnt {
  58         uint32_t        nb_v4;
  59         uint32_t        nb_v6;
  60 };
  61
  62 typedef int32_t (*ipsec_xform_fn)(struct rte_mbuf *m, struct ipsec_sa *sa,
  63                 struct rte_crypto_op *cop);
  64
  65 struct ip_addr {
  66         union {
  67                 uint32_t ip4;
  68                 union {
  69                         uint64_t ip6[2];
  70                         uint8_t ip6_b[16];
  71                 } ip6;
  72         } ip;
  73 };
  74
  75 #define MAX_KEY_SIZE            36
  76
  77 /*
  78  * application wide SA parameters
  79  */
  80 struct app_sa_prm {
  81         uint32_t enable; /* use librte_ipsec API for ipsec pkt processing */
  82         uint32_t window_size; /* replay window size */
  83         uint32_t enable_esn;  /* enable/disable ESN support */
  84         uint32_t cache_sz;      /* per lcore SA cache size */
  85         uint64_t flags;       /* rte_ipsec_sa_prm.flags */
  86 };
  87
  88 extern struct app_sa_prm app_sa_prm;
  89
  90 struct flow_info {
  91         struct rte_flow *rx_def_flow;
  92 };
  93
  94 extern struct flow_info flow_info_tbl[RTE_MAX_ETHPORTS];
  95
  96 enum {
  97         IPSEC_SESSION_PRIMARY = 0,
  98         IPSEC_SESSION_FALLBACK = 1,
  99         IPSEC_SESSION_MAX
 100 };
 101
 102 #define IPSEC_SA_OFFLOAD_FALLBACK_FLAG (1)
 103
 104 static inline struct ipsec_sa *
 105 ipsec_mask_saptr(void *ptr)
 106 {
 107         uintptr_t i = (uintptr_t)ptr;
 108         static const uintptr_t mask = IPSEC_SA_OFFLOAD_FALLBACK_FLAG;
 109
 110         i &= ~mask;
 111
 112         return (struct ipsec_sa *)i;
 113 }
 114
 115 struct ipsec_sa {
 116         struct rte_ipsec_session sessions[IPSEC_SESSION_MAX];
 117         uint32_t spi;
 118         uint32_t cdev_id_qp;
 119         uint64_t seq;
 120         uint32_t salt;
 121         uint32_t fallback_sessions;
 122         enum rte_crypto_cipher_algorithm cipher_algo;
 123         enum rte_crypto_auth_algorithm auth_algo;
 124         enum rte_crypto_aead_algorithm aead_algo;
 125         uint16_t digest_len;
 126         uint16_t iv_len;
 127         uint16_t block_size;
 128         uint16_t flags;
 129 #define IP4_TUNNEL (1 << 0)
 130 #define IP6_TUNNEL (1 << 1)
 131 #define TRANSPORT  (1 << 2)
 132 #define IP4_TRANSPORT (1 << 3)
 133 #define IP6_TRANSPORT (1 << 4)
 134         struct ip_addr src;
 135         struct ip_addr dst;
 136         uint8_t cipher_key[MAX_KEY_SIZE];
 137         uint16_t cipher_key_len;
 138         uint8_t auth_key[MAX_KEY_SIZE];
 139         uint16_t auth_key_len;
 140         uint16_t aad_len;
 141         union {
 142                 struct rte_crypto_sym_xform *xforms;
 143                 struct rte_security_ipsec_xform *sec_xform;
 144         };
 145         enum rte_security_ipsec_sa_direction direction;
 146         uint16_t portid;
 147         uint8_t fdir_qid;
 148         uint8_t fdir_flag;
 149
 150 #define MAX_RTE_FLOW_PATTERN (4)
 151 #define MAX_RTE_FLOW_ACTIONS (3)
 152         struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN];
 153         struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS];
 154         struct rte_flow_attr attr;
 155         union {
 156                 struct rte_flow_item_ipv4 ipv4_spec;
 157                 struct rte_flow_item_ipv6 ipv6_spec;
 158         };
 159         struct rte_flow_item_esp esp_spec;
 160         struct rte_flow *flow;
 161         struct rte_security_session_conf sess_conf;
 162 } __rte_cache_aligned;
 163
 164 struct ipsec_xf {
 165         struct rte_crypto_sym_xform a;
 166         struct rte_crypto_sym_xform b;
 167 };
 168
 169 struct ipsec_sad {
 170         struct rte_ipsec_sad *sad_v4;
 171         struct rte_ipsec_sad *sad_v6;
 172 };
 173
 174 struct sa_ctx {
 175         void *satbl; /* pointer to array of rte_ipsec_sa objects*/
 176         struct ipsec_sad sad;
 177         struct ipsec_xf *xf;
 178         uint32_t nb_sa;
 179         struct ipsec_sa sa[];
 180 };
 181
 182 struct ipsec_mbuf_metadata {
 183         struct ipsec_sa *sa;
 184         struct rte_crypto_op cop;
 185         struct rte_crypto_sym_op sym_cop;
 186         uint8_t buf[32];
 187 } __rte_cache_aligned;
 188
 189 #define IS_TRANSPORT(flags) ((flags) & TRANSPORT)
 190
 191 #define IS_TUNNEL(flags) ((flags) & (IP4_TUNNEL | IP6_TUNNEL))
 192
 193 #define IS_IP4(flags) ((flags) & (IP4_TUNNEL | IP4_TRANSPORT))
 194
 195 #define IS_IP6(flags) ((flags) & (IP6_TUNNEL | IP6_TRANSPORT))
 196
 197 #define IS_IP4_TUNNEL(flags) ((flags) & IP4_TUNNEL)
 198
 199 #define IS_IP6_TUNNEL(flags) ((flags) & IP6_TUNNEL)
 200
 201 /*
 202  * Macro for getting ipsec_sa flags statuses without version of protocol
 203  * used for transport (IP4_TRANSPORT and IP6_TRANSPORT flags).
 204  */
 205 #define WITHOUT_TRANSPORT_VERSION(flags) \
 206                 ((flags) & (IP4_TUNNEL | \
 207                         IP6_TUNNEL | \
 208                         TRANSPORT))
 209
 210 struct cdev_qp {
 211         uint16_t id;
 212         uint16_t qp;
 213         uint16_t in_flight;
 214         uint16_t len;
 215         struct rte_crypto_op *buf[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
 216 };
 217
 218 struct ipsec_ctx {
 219         struct rte_hash *cdev_map;
 220         struct sp_ctx *sp4_ctx;
 221         struct sp_ctx *sp6_ctx;
 222         struct sa_ctx *sa_ctx;
 223         uint16_t nb_qps;
 224         uint16_t last_qp;
 225         struct cdev_qp tbl[MAX_QP_PER_LCORE];
 226         struct rte_mempool *session_pool;
 227         struct rte_mempool *session_priv_pool;
 228         struct rte_mbuf *ol_pkts[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
 229         uint16_t ol_pkts_cnt;
 230         uint64_t ipv4_offloads;
 231         uint64_t ipv6_offloads;
 232 };
 233
 234 struct cdev_key {
 235         uint16_t lcore_id;
 236         uint8_t cipher_algo;
 237         uint8_t auth_algo;
 238         uint8_t aead_algo;
 239 };
 240
 241 struct socket_ctx {
 242         struct sa_ctx *sa_in;
 243         struct sa_ctx *sa_out;
 244         struct sp_ctx *sp_ip4_in;
 245         struct sp_ctx *sp_ip4_out;
 246         struct sp_ctx *sp_ip6_in;
 247         struct sp_ctx *sp_ip6_out;
 248         struct rt_ctx *rt_ip4;
 249         struct rt_ctx *rt_ip6;
 250         struct rte_mempool *mbuf_pool;
 251         struct rte_mempool *mbuf_pool_indir;
 252         struct rte_mempool *session_pool;
 253         struct rte_mempool *session_priv_pool;
 254 };
 255
 256 struct cnt_blk {
 257         uint32_t salt;
 258         uint64_t iv;
 259         uint32_t cnt;
 260 } __rte_packed;
 261
 262 /* Socket ctx */
 263 extern struct socket_ctx socket_ctx[NB_SOCKETS];
 264
 265 void
 266 ipsec_poll_mode_worker(void);
 267
 268 int
 269 ipsec_launch_one_lcore(void *args);
 270
 271 extern struct ipsec_sa *sa_out;
 272 extern uint32_t nb_sa_out;
 273
 274 extern struct ipsec_sa *sa_in;
 275 extern uint32_t nb_sa_in;
 276
 277 uint16_t
 278 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 279                 uint16_t nb_pkts, uint16_t len);
 280
 281 uint16_t
 282 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 283                 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len);
 284
 285 uint16_t
 286 ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 287                 uint16_t len);
 288
 289 uint16_t
 290 ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 291                 uint16_t len);
 292
 293 void
 294 ipsec_process(struct ipsec_ctx *ctx, struct ipsec_traffic *trf);
 295
 296 void
 297 ipsec_cqp_process(struct ipsec_ctx *ctx, struct ipsec_traffic *trf);
 298
 299 static inline uint16_t
 300 ipsec_metadata_size(void)
 301 {
 302         return sizeof(struct ipsec_mbuf_metadata);
 303 }
 304
 305 static inline struct ipsec_mbuf_metadata *
 306 get_priv(struct rte_mbuf *m)
 307 {
 308         return rte_mbuf_to_priv(m);
 309 }
 310
 311 static inline void *
 312 get_cnt_blk(struct rte_mbuf *m)
 313 {
 314         struct ipsec_mbuf_metadata *priv = get_priv(m);
 315
 316         return &priv->buf[0];
 317 }
 318
 319 static inline void *
 320 get_aad(struct rte_mbuf *m)
 321 {
 322         struct ipsec_mbuf_metadata *priv = get_priv(m);
 323
 324         return &priv->buf[16];
 325 }
 326
 327 static inline void *
 328 get_sym_cop(struct rte_crypto_op *cop)
 329 {
 330         return (cop + 1);
 331 }
 332
 333 static inline struct rte_ipsec_session *
 334 ipsec_get_primary_session(struct ipsec_sa *sa)
 335 {
 336         return &sa->sessions[IPSEC_SESSION_PRIMARY];
 337 }
 338
 339 static inline struct rte_ipsec_session *
 340 ipsec_get_fallback_session(struct ipsec_sa *sa)
 341 {
 342         return &sa->sessions[IPSEC_SESSION_FALLBACK];
 343 }
 344
 345 static inline enum rte_security_session_action_type
 346 ipsec_get_action_type(struct ipsec_sa *sa)
 347 {
 348         struct rte_ipsec_session *ips;
 349         ips = ipsec_get_primary_session(sa);
 350         return ips->type;
 351 }
 352
 353 int
 354 inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx);
 355
 356 void
 357 inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
 358                 void *sa[], uint16_t nb_pkts);
 359
 360 void
 361 outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
 362                 void *sa[], uint16_t nb_pkts);
 363
 364 void
 365 sp4_init(struct socket_ctx *ctx, int32_t socket_id);
 366
 367 void
 368 sp6_init(struct socket_ctx *ctx, int32_t socket_id);
 369
 370 /*
 371  * Search through SP rules for given SPI.
 372  * Returns first rule index if found(greater or equal then zero),
 373  * or -ENOENT otherwise.
 374  */
 375 int
 376 sp4_spi_present(uint32_t spi, int inbound, struct ip_addr ip_addr[2],
 377                         uint32_t mask[2]);
 378 int
 379 sp6_spi_present(uint32_t spi, int inbound, struct ip_addr ip_addr[2],
 380                         uint32_t mask[2]);
 381
 382 /*
 383  * Search through SA entries for given SPI.
 384  * Returns first entry index if found(greater or equal then zero),
 385  * or -ENOENT otherwise.
 386  */
 387 int
 388 sa_spi_present(struct sa_ctx *sa_ctx, uint32_t spi, int inbound);
 389
 390 void
 391 sa_init(struct socket_ctx *ctx, int32_t socket_id);
 392
 393 void
 394 rt_init(struct socket_ctx *ctx, int32_t socket_id);
 395
 396 int
 397 sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
 398                 uint64_t *tx_offloads);
 399
 400 int
 401 add_dst_ethaddr(uint16_t port, const struct rte_ether_addr *addr);
 402
 403 void
 404 enqueue_cop_burst(struct cdev_qp *cqp);
 405
 406 int
 407 create_lookaside_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa,
 408                 struct rte_ipsec_session *ips);
 409
 410 int
 411 create_inline_session(struct socket_ctx *skt_ctx, struct ipsec_sa *sa,
 412                 struct rte_ipsec_session *ips);
 413 int
 414 check_flow_params(uint16_t fdir_portid, uint8_t fdir_qid);
 415
 416 int
 417 create_ipsec_esp_flow(struct ipsec_sa *sa);
 418
 419 uint32_t
 420 get_nb_crypto_sessions(void);
 421
 422 #endif /* __IPSEC_H__ */