quic: Implement crypto contexts

Type: feature

Make quic use the crypto contexts. This introduces a crypto context
pool backed by a hashtable giving ctx indexes by connect params
(ckpair, engine, rx & tx fifo sizes).
Applications keep the initialization vector common.

Change-Id: I22ed6711196cd70a2f2f74240f12113c7af8dfcd
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>

src/plugins/quic/quic.h

@@ -40,6 +40,7 @@
 #define QUIC_INT_MAX  0x3FFFFFFFFFFFFFFF
 #define QUIC_DEFAULT_FIFO_SIZE (64 << 10)
 #define QUIC_SEND_PACKET_VEC_SIZE 16
+#define QUIC_IV_LEN 17
 
 #define QUIC_SEND_MAX_BATCH_PACKETS 16
 #define QUIC_RCV_MAX_BATCH_PACKETS 16
@@ -152,7 +153,8 @@ typedef struct quic_ctx_
   u32 parent_app_wrk_id;
   u32 parent_app_id;
   u32 ckpair_index;
-  quicly_context_t *quicly_ctx;
+  u32 crypto_engine;
+  u32 crypto_context_index;
   u8 flags;
 } quic_ctx_t;
 
@@ -182,12 +184,21 @@ typedef struct quic_stream_data_
   u32 app_tx_data_len;		/**< bytes sent */
 } quic_stream_data_t;
 
+typedef struct quic_crypto_context_data_
+{
+  quicly_context_t quicly_ctx;
+  char cid_key[QUIC_IV_LEN];
+  ptls_context_t ptls_ctx;
+} quic_crypto_context_data_t;
+
 typedef struct quic_worker_ctx_
 {
   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
   int64_t time_now;				   /**< worker time */
   tw_timer_wheel_1t_3w_1024sl_ov_t timer_wheel;	   /**< worker timer wheel */
   quicly_cid_plaintext_t next_cid;
+  crypto_context_t *crypto_ctx_pool;		/**< per thread pool of crypto contexes */
+  clib_bihash_24_8_t crypto_context_hash;	/**< per thread [params:crypto_ctx_index] hash */
 } quic_worker_ctx_t;
 
 typedef struct quic_rx_packet_ctx_
@@ -206,13 +217,6 @@ typedef struct quic_rx_packet_ctx_
   session_dgram_hdr_t ph;
 } quic_rx_packet_ctx_t;
 
-typedef struct quicly_ctx_data_
-{
-  quicly_context_t quicly_ctx;
-  char cid_key[17];
-  ptls_context_t ptls_ctx;
-} quicly_ctx_data_t;
-
 typedef struct quic_main_
 {
   u32 app_index;

src/vnet/session/application.h

@@ -114,7 +114,6 @@ typedef struct application_
   /** Preferred tls engine */
   u8 tls_engine;
 
-  u64 *quicly_ctx;
   /** quic initialization vector */
   char quic_iv[17];
   u8 quic_iv_set;

src/vnet/session/application_interface.h

@@ -182,6 +182,7 @@ typedef struct crypto_ctx_
   u32 n_subscribers;		/**< refcount of sessions using said context */
   u32 ckpair_index;		/**< certificate & key */
   u8 crypto_engine;
+  void *data;			/**< protocol specific data */
 } crypto_context_t;
 
 /* Application attach options */