summaryrefslogtreecommitdiffstats
path: root/src/plugins/quic/quic.c
diff options
context:
space:
mode:
authorMathiasRaoul <mathias.raoul@gmail.com>2020-01-09 14:50:53 +0000
committerDave Wallace <dwallacelf@gmail.com>2020-01-31 20:22:28 +0000
commit92de6b65be144c8108149c1a56327832edcd8ba6 (patch)
treeb0122f19055098243240ce5683aab6d1a9c94f61 /src/plugins/quic/quic.c
parent776644efe78f427a75fc5e122014b44b39d470c3 (diff)
quic: quicly crypto offloading
- Implement our own quic packet allocator to allocate more memory at the end of the packet to store crypto offloading related data - 1RTT packets offloading encryption/decryption using vnet crypto - Add cli to change max packet per key Type: feature Change-Id: I7557fd457d7ba492329d5d8ed192509cbd727f9c Signed-off-by: MathiasRaoul <mathias.raoul@gmail.com>
Diffstat (limited to 'src/plugins/quic/quic.c')
-rw-r--r--src/plugins/quic/quic.c97
1 files changed, 91 insertions, 6 deletions
diff --git a/src/plugins/quic/quic.c b/src/plugins/quic/quic.c
index 7780c141e14..5265e5b5a20 100644
--- a/src/plugins/quic/quic.c
+++ b/src/plugins/quic/quic.c
@@ -26,10 +26,14 @@
#include <quic/quic.h>
#include <quic/certs.h>
#include <quic/error.h>
-#include <quic/quic_crypto.h>
#include <quicly/constants.h>
#include <quicly/defaults.h>
+#include <picotls.h>
+
+#include <quic/quic_crypto.h>
+
+extern quicly_crypto_engine_t quic_crypto_engine;
static char *quic_error_strings[] = {
#define quic_error(n,s) s,
@@ -37,7 +41,9 @@ static char *quic_error_strings[] = {
#undef quic_error
};
-static quic_main_t quic_main;
+#define DEFAULT_MAX_PACKETS_PER_KEY 16777216
+
+quic_main_t quic_main;
static void quic_update_timer (quic_ctx_t * ctx);
static void quic_check_quic_session_connected (quic_ctx_t * ctx);
static int quic_reset_connection (u64 udp_session_handle,
@@ -85,6 +91,33 @@ quic_crypto_context_free_if_needed (crypto_context_t * crctx, u8 thread_index)
pool_put (qm->wrk_ctx[thread_index].crypto_ctx_pool, crctx);
}
+static quicly_datagram_t *
+quic_alloc_packet (quicly_packet_allocator_t * self, size_t payloadsize)
+{
+ quicly_datagram_t *packet;
+ if ((packet =
+ clib_mem_alloc (sizeof (*packet) + payloadsize +
+ sizeof (quic_encrypt_cb_ctx))) == NULL)
+ return NULL;
+ packet->data.base =
+ (uint8_t *) packet + sizeof (*packet) + sizeof (quic_encrypt_cb_ctx);
+ quic_encrypt_cb_ctx *encrypt_cb_ctx =
+ (quic_encrypt_cb_ctx *) ((uint8_t *) packet + sizeof (*packet));
+
+ clib_memset (encrypt_cb_ctx, 0, sizeof (*encrypt_cb_ctx));
+ return packet;
+}
+
+static void
+quic_free_packet (quicly_packet_allocator_t * self,
+ quicly_datagram_t * packet)
+{
+ clib_mem_free (packet);
+}
+
+quicly_packet_allocator_t quic_packet_allocator =
+ { quic_alloc_packet, quic_free_packet };
+
static int
quic_app_cert_key_pair_delete_callback (app_cert_key_pair_t * ckpair)
{
@@ -154,6 +187,32 @@ quic_list_crypto_context_command_fn (vlib_main_t * vm,
return 0;
}
+static clib_error_t *
+quic_set_max_packets_per_key_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ quic_main_t *qm = &quic_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u64 tmp;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U", unformat_memory_size, &tmp))
+ {
+ qm->max_packets_per_key = tmp;
+ }
+ else
+ return clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ }
+
+ return 0;
+}
+
static void
quic_release_crypto_context (u32 crypto_context_index, u8 thread_index)
{
@@ -203,12 +262,15 @@ quic_init_crypto_context (crypto_context_t * crctx, quic_ctx_t * ctx)
clib_memcpy (quicly_ctx, &quicly_spec_context, sizeof (quicly_context_t));
quicly_ctx->max_packet_size = QUIC_MAX_PACKET_SIZE;
+ quicly_ctx->max_packets_per_key = qm->max_packets_per_key;
quicly_ctx->tls = ptls_ctx;
quicly_ctx->stream_open = &on_stream_open;
quicly_ctx->closed_by_peer = &on_closed_by_peer;
quicly_ctx->now = &quicly_vpp_now_cb;
quicly_amend_ptls_context (quicly_ctx->tls);
+ quicly_ctx->packet_allocator = &quic_packet_allocator;
+ quicly_ctx->crypto_engine = &quic_crypto_engine;
quicly_ctx->transport_params.max_data = QUIC_INT_MAX;
quicly_ctx->transport_params.max_streams_uni = (uint64_t) 1 << 60;
quicly_ctx->transport_params.max_streams_bidi = (uint64_t) 1 << 60;
@@ -350,7 +412,7 @@ quic_ctx_get_if_valid (u32 ctx_index, u32 thread_index)
return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
}
-static quic_ctx_t *
+quic_ctx_t *
quic_get_conn_ctx (quicly_conn_t * conn)
{
u64 conn_data;
@@ -633,12 +695,14 @@ quic_send_datagram (session_t * udp_session, quicly_datagram_t * packet)
static int
quic_send_packets (quic_ctx_t * ctx)
{
+ quic_main_t *qm = &quic_main;
quicly_datagram_t *packets[QUIC_SEND_PACKET_VEC_SIZE];
session_t *udp_session;
quicly_conn_t *conn;
size_t num_packets, i, max_packets;
quicly_packet_allocator_t *pa;
int err = 0;
+ u32 thread_index = vlib_get_thread_index ();
/* We have sctx, get qctx */
if (quic_ctx_is_stream (ctx))
@@ -669,8 +733,12 @@ quic_send_packets (quic_ctx_t * ctx)
if ((err = quicly_send (conn, packets, &num_packets)))
goto quicly_error;
+ quic_crypto_batch_tx_packets (&qm->wrk_ctx
+ [thread_index].crypto_context_batch);
+
for (i = 0; i != num_packets; ++i)
{
+ quic_crypto_finalize_send_packet (packets[i]);
if ((err = quic_send_datagram (udp_session, packets[i])))
goto quicly_error;
@@ -1122,7 +1190,6 @@ quic_expired_timers_dispatch (u32 * expired_timers)
}
/* Transport proto functions */
-
static int
quic_connect_stream (session_t * quic_session, session_endpoint_cfg_t * sep)
{
@@ -1990,7 +2057,7 @@ quic_accept_connection (quic_rx_packet_ctx_t * pctx)
ctx = quic_ctx_get (pctx->ctx_index, pctx->thread_index);
if (ctx->c_s_index != QUIC_SESSION_INVALID)
{
- QUIC_DBG (2, "already accepted ctx 0x%x", ctx_index);
+ QUIC_DBG (2, "already accepted ctx 0x%x", ctx->c_s_index);
return;
}
@@ -2128,6 +2195,8 @@ quic_process_one_rx_packet (u64 udp_session_handle, svm_fifo_t * f,
if (rv == QUIC_PACKET_TYPE_RECEIVE)
{
pctx->ptype = QUIC_PACKET_TYPE_RECEIVE;
+ quic_ctx_t *qctx = quic_ctx_get (pctx->ctx_index, thread_index);
+ quic_crypto_decrypt_packet (qctx, pctx);
return 0;
}
else if (rv == QUIC_PACKET_TYPE_MIGRATE)
@@ -2153,6 +2222,7 @@ static int
quic_udp_session_rx_callback (session_t * udp_session)
{
/* Read data from UDP rx_fifo and pass it to the quicly conn. */
+ quic_main_t *qm = &quic_main;
quic_ctx_t *ctx = NULL, *prev_ctx = NULL;
svm_fifo_t *f = udp_session->rx_fifo;
u32 max_deq;
@@ -2212,6 +2282,9 @@ rx_start:
}
}
+ quic_crypto_batch_rx_packets (&qm->
+ wrk_ctx[thread_index].crypto_context_batch);
+
for (i = 0; i < max_packets; i++)
{
switch (packets_ctx[i].ptype)
@@ -2412,6 +2485,7 @@ quic_init (vlib_main_t * vm)
vec_validate (qm->ctx_pool, num_threads - 1);
vec_validate (qm->wrk_ctx, num_threads - 1);
+
for (i = 0; i < num_threads; i++)
{
qm->wrk_ctx[i].next_cid.thread_id = i;
@@ -2421,6 +2495,9 @@ quic_init (vlib_main_t * vm)
tw->last_run_time = vlib_time_now (vlib_get_main ());
clib_bihash_init_24_8 (&qm->wrk_ctx[i].crypto_context_hash,
"quic crypto contexts", 64, 128 << 10);
+
+ qm->wrk_ctx[i].crypto_context_batch.nb_rx_packets = 0;
+ qm->wrk_ctx[i].crypto_context_batch.nb_tx_packets = 0;
}
clib_bihash_init_16_8 (&qm->connection_hash, "quic connections", 1024,
@@ -2441,7 +2518,9 @@ quic_init (vlib_main_t * vm)
quic_register_cipher_suite (CRYPTO_ENGINE_VPP, quic_crypto_cipher_suites);
quic_register_cipher_suite (CRYPTO_ENGINE_PICOTLS,
ptls_openssl_cipher_suites);
- qm->default_crypto_engine = CRYPTO_ENGINE_PICOTLS;
+ qm->default_crypto_engine = CRYPTO_ENGINE_VPP;
+ qm->max_packets_per_key = DEFAULT_MAX_PACKETS_PER_KEY;
+ clib_rwlock_init (&qm->crypto_keys_quic_rw_lock);
vec_free (a->name);
return 0;
}
@@ -2760,6 +2839,12 @@ VLIB_CLI_COMMAND (quic_list_crypto_context_command, static) =
.short_help = "list quic crypto contextes",
.function = quic_list_crypto_context_command_fn,
};
+VLIB_CLI_COMMAND (quic_set_max_packets_per_key, static) =
+{
+ .path = "set quic max_packets_per_key",
+ .short_help = "set quic max_packets_per_key 16777216",
+ .function = quic_set_max_packets_per_key_fn,
+};
VLIB_PLUGIN_REGISTER () =
{
.version = VPP_BUILD_VER,