X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_sa.h;h=7827ef18084a8a78e428a0b6c0e2e71151bdb61e;hb=f16e9a550;hp=e0d74e1309ee87cc517dcb51ee8f811a09d8bcdb;hpb=f62a8c013c6e22c012b9d7df2ef463a6370cf1ce;p=vpp.git diff --git a/src/vnet/ipsec/ipsec_sa.h b/src/vnet/ipsec/ipsec_sa.h index e0d74e1309e..7827ef18084 100644 --- a/src/vnet/ipsec/ipsec_sa.h +++ b/src/vnet/ipsec/ipsec_sa.h @@ -16,8 +16,10 @@ #define __IPSEC_SPD_SA_H__ #include +#include #include #include +#include #define foreach_ipsec_crypto_alg \ _ (0, NONE, "none") \ @@ -39,13 +41,18 @@ typedef enum foreach_ipsec_crypto_alg #undef _ IPSEC_CRYPTO_N_ALG, -} ipsec_crypto_alg_t; +} __clib_packed ipsec_crypto_alg_t; #define IPSEC_CRYPTO_ALG_IS_GCM(_alg) \ (((_alg == IPSEC_CRYPTO_ALG_AES_GCM_128) || \ (_alg == IPSEC_CRYPTO_ALG_AES_GCM_192) || \ (_alg == IPSEC_CRYPTO_ALG_AES_GCM_256))) +#define IPSEC_CRYPTO_ALG_IS_CTR(_alg) \ + (((_alg == IPSEC_CRYPTO_ALG_AES_CTR_128) || \ + (_alg == IPSEC_CRYPTO_ALG_AES_CTR_192) || \ + (_alg == IPSEC_CRYPTO_ALG_AES_CTR_256))) + #define foreach_ipsec_integ_alg \ _ (0, NONE, "none") \ _ (1, MD5_96, "md5-96") /* RFC2403 */ \ @@ -61,13 +68,13 @@ typedef enum foreach_ipsec_integ_alg #undef _ IPSEC_INTEG_N_ALG, -} ipsec_integ_alg_t; +} __clib_packed ipsec_integ_alg_t; typedef enum { IPSEC_PROTOCOL_AH = 0, IPSEC_PROTOCOL_ESP = 1 -} ipsec_protocol_t; +} __clib_packed ipsec_protocol_t; #define IPSEC_KEY_MAX_LEN 128 typedef struct ipsec_key_t_ @@ -84,16 +91,18 @@ typedef struct ipsec_key_t_ * else IPv4 tunnel only valid if is_tunnel is non-zero * enable UDP encapsulation for NAT traversal */ -#define foreach_ipsec_sa_flags \ - _ (0, NONE, "none") \ - _ (1, USE_ESN, "esn") \ - _ (2, USE_ANTI_REPLAY, "anti-replay") \ - _ (4, IS_TUNNEL, "tunnel") \ - _ (8, IS_TUNNEL_V6, "tunnel-v6") \ - _ (16, UDP_ENCAP, "udp-encap") \ - _ (32, IS_PROTECT, "Protect") \ - _ (64, IS_INBOUND, "inbound") \ - _ (128, IS_AEAD, "aead") \ +#define foreach_ipsec_sa_flags \ + _ (0, NONE, "none") \ + _ (1, USE_ESN, "esn") \ + _ (2, USE_ANTI_REPLAY, "anti-replay") \ + _ (4, IS_TUNNEL, "tunnel") \ + _ (8, IS_TUNNEL_V6, "tunnel-v6") \ + _ (16, UDP_ENCAP, "udp-encap") \ + _ (32, IS_PROTECT, "Protect") \ + _ (64, IS_INBOUND, "inbound") \ + _ (128, IS_AEAD, "aead") \ + _ (256, IS_CTR, "ctr") \ + _ (512, IS_ASYNC, "async") typedef enum ipsec_sad_flags_t_ { @@ -102,7 +111,7 @@ typedef enum ipsec_sad_flags_t_ #undef _ } __clib_packed ipsec_sa_flags_t; -STATIC_ASSERT (sizeof (ipsec_sa_flags_t) == 1, "IPSEC SA flags > 1 byte"); +STATIC_ASSERT (sizeof (ipsec_sa_flags_t) == 2, "IPSEC SA flags != 2 byte"); typedef struct { @@ -112,10 +121,13 @@ typedef struct ipsec_sa_flags_t flags; u8 crypto_iv_size; - u8 crypto_block_size; + u8 esp_block_align; u8 integ_icv_size; - u32 encrypt_thread_index; - u32 decrypt_thread_index; + + u8 __pad1[3]; + + u32 thread_index; + u32 spi; u32 seq; u32 seq_hi; @@ -126,13 +138,31 @@ typedef struct vnet_crypto_key_index_t crypto_key_index; vnet_crypto_key_index_t integ_key_index; - vnet_crypto_op_id_t crypto_enc_op_id:16; - vnet_crypto_op_id_t crypto_dec_op_id:16; - vnet_crypto_op_id_t integ_op_id:16; - /* data accessed by dataplane code should be above this comment */ - CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); + /* Union data shared by sync and async ops, updated when mode is + * changed. */ + union + { + struct + { + vnet_crypto_op_id_t crypto_enc_op_id:16; + vnet_crypto_op_id_t crypto_dec_op_id:16; + vnet_crypto_op_id_t integ_op_id:16; + }; + + struct + { + vnet_crypto_async_op_id_t crypto_async_enc_op_id:16; + vnet_crypto_async_op_id_t crypto_async_dec_op_id:16; + vnet_crypto_key_index_t linked_key_index; + }; + u64 crypto_op_data; + }; + + CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); + + u64 ctr_iv_counter; union { ip4_header_t ip4_hdr; @@ -140,33 +170,72 @@ typedef struct }; udp_header_t udp_hdr; - fib_node_t node; - u32 id; - u32 stat_index; + /* Salt used in CTR modes (incl. GCM) - stored in network byte order */ + u32 salt; + ipsec_protocol_t protocol; + tunnel_encap_decap_flags_t tunnel_flags; + u8 __pad[2]; - ipsec_crypto_alg_t crypto_alg; - ipsec_key_t crypto_key; - vnet_crypto_alg_t crypto_calg; + /* data accessed by dataplane code should be above this comment */ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline2); - ipsec_integ_alg_t integ_alg; - ipsec_key_t integ_key; - vnet_crypto_alg_t integ_calg; + /* Elements with u64 size multiples */ + union + { + struct + { + vnet_crypto_op_id_t crypto_enc_op_id:16; + vnet_crypto_op_id_t crypto_dec_op_id:16; + vnet_crypto_op_id_t integ_op_id:16; + }; + u64 data; + } sync_op_data; - ip46_address_t tunnel_src_addr; - ip46_address_t tunnel_dst_addr; + union + { + struct + { + vnet_crypto_async_op_id_t crypto_async_enc_op_id:16; + vnet_crypto_async_op_id_t crypto_async_dec_op_id:16; + vnet_crypto_key_index_t linked_key_index; + }; + u64 data; + } async_op_data; - fib_node_index_t fib_entry_index; - u32 sibling; + tunnel_t tunnel; - u32 tx_fib_index; + fib_node_t node; - /* Salt used in GCM modes - stored in network byte order */ - u32 salt; - u64 gcm_iv_counter; + /* elements with u32 size */ + u32 id; + u32 stat_index; + vnet_crypto_alg_t integ_calg; + vnet_crypto_alg_t crypto_calg; + + /* else u8 packed */ + ipsec_crypto_alg_t crypto_alg; + ipsec_integ_alg_t integ_alg; + + ipsec_key_t integ_key; + ipsec_key_t crypto_key; } ipsec_sa_t; STATIC_ASSERT_OFFSET_OF (ipsec_sa_t, cacheline1, CLIB_CACHE_LINE_BYTES); +STATIC_ASSERT_OFFSET_OF (ipsec_sa_t, cacheline2, 2 * CLIB_CACHE_LINE_BYTES); + +/** + * Pool of IPSec SAs + */ +extern ipsec_sa_t *ipsec_sa_pool; + +/* + * Ensure that the IPsec data does not overlap with the IP data in + * the buffer meta data + */ +STATIC_ASSERT (STRUCT_OFFSET_OF (vnet_buffer_opaque_t, ipsec.sad_index) == + STRUCT_OFFSET_OF (vnet_buffer_opaque_t, ip.save_protocol), + "IPSec data is overlapping with IP data"); #define _(a,v,s) \ always_inline int \ @@ -197,19 +266,12 @@ extern vlib_combined_counter_main_t ipsec_sa_counters; extern void ipsec_mk_key (ipsec_key_t * key, const u8 * data, u8 len); -extern int ipsec_sa_add_and_lock (u32 id, - u32 spi, - ipsec_protocol_t proto, - ipsec_crypto_alg_t crypto_alg, - const ipsec_key_t * ck, - ipsec_integ_alg_t integ_alg, - const ipsec_key_t * ik, - ipsec_sa_flags_t flags, - u32 tx_table_id, - u32 salt, - const ip46_address_t * tunnel_src_addr, - const ip46_address_t * tunnel_dst_addr, - u32 * sa_index); +extern int +ipsec_sa_add_and_lock (u32 id, u32 spi, ipsec_protocol_t proto, + ipsec_crypto_alg_t crypto_alg, const ipsec_key_t *ck, + ipsec_integ_alg_t integ_alg, const ipsec_key_t *ik, + ipsec_sa_flags_t flags, u32 salt, u16 src_port, + u16 dst_port, const tunnel_t *tun, u32 *sa_out_index); extern index_t ipsec_sa_find_and_lock (u32 id); extern int ipsec_sa_unlock_id (u32 id); extern void ipsec_sa_unlock (index_t sai); @@ -223,6 +285,7 @@ extern void ipsec_sa_set_integ_alg (ipsec_sa_t * sa, typedef walk_rc_t (*ipsec_sa_walk_cb_t) (ipsec_sa_t * sa, void *ctx); extern void ipsec_sa_walk (ipsec_sa_walk_cb_t cd, void *ctx); +extern u8 *format_ipsec_replay_window (u8 *s, va_list *args); extern u8 *format_ipsec_crypto_alg (u8 * s, va_list * args); extern u8 *format_ipsec_integ_alg (u8 * s, va_list * args); extern u8 *format_ipsec_sa (u8 * s, va_list * args); @@ -233,6 +296,8 @@ extern uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args); extern uword unformat_ipsec_key (unformat_input_t * input, va_list * args); +#define IPSEC_UDP_PORT_NONE ((u16)~0) + /* * Anti Replay definitions */ @@ -450,6 +515,12 @@ ipsec_sa_assign_thread (u32 thread_id) : (unix_time_now_nsec () % vlib_num_workers ()) + 1); } +always_inline ipsec_sa_t * +ipsec_sa_get (u32 sa_index) +{ + return (pool_elt_at_index (ipsec_sa_pool, sa_index)); +} + #endif /* __IPSEC_SPD_SA_H__ */ /*