/*
* Copyright (c) 2018-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/session/application_interface.h>
#include <vppinfra/lock.h>
#include <vnet/tls/tls.h>
static tls_main_t tls_main;
static tls_engine_vft_t *tls_vfts;
#define TLS_INVALID_HANDLE ~0
#define TLS_IDX_MASK 0x00FFFFFF
#define TLS_ENGINE_TYPE_SHIFT 29
void tls_disconnect (u32 ctx_handle, u32 thread_index);
void
tls_disconnect_transport (tls_ctx_t * ctx)
{
vnet_disconnect_args_t a = {
.handle = ctx->tls_session_handle,
.app_index = tls_main.app_index,
};
if (vnet_disconnect_session (&a))
clib_warning ("disconnect returned");
}
crypto_engine_type_t
tls_get_available_engine (void)
{
int i;
for (i = 0; i < vec_len (tls_vfts); i++)
{
if (tls_vfts[i].ctx_alloc)
return i;
}
return CRYPTO_ENGINE_NONE;
}
int
tls_add_vpp_q_rx_evt (session_t * s)
{
if (svm_fifo_set_event (s->rx_fifo))
session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_RX);
return 0;
}
int
tls_add_vpp_q_builtin_rx_evt (session_t * s)
{
if (svm_fifo_set_event (s->rx_fifo))
session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_BUILTIN_RX);
return 0;
}
int
tls_add_vpp_q_tx_evt (session_t * s)
{
if (svm_fifo_set_event (s->tx_fifo))
session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
return 0;
}
static inline int
tls_add_app_q_evt (app_worker_t * app, session_t * app_session)
{
return app_worker_lock_and_send_event (app, app_session, SESSION_IO_EVT_RX);
}
u32
tls_listener_ctx_alloc (void)
{
tls_main_t *tm = &tls_main;
tls_ctx_t *ctx;
pool_get (tm->listener_ctx_pool, ctx);
clib_memset (ctx, 0, sizeof (*ctx));
return ctx - tm->listener_ctx_pool;
}
void
tls_listener_ctx_free (tls_ctx_t * ctx)
{
if (CLIB_DEBUG)
memset (ctx, 0xfb, sizeof (*ctx));
pool_put (tls_main.listener_ctx_pool, ctx);
}
tls_ctx_t *
tls_listener_ctx_get (u32 ctx_index)
{
return pool_elt_at_index (tls_main.listener_ctx_pool, ctx_index);
}
u32
tls_listener_ctx_index (tls_ctx_t * ctx)
{
return (ctx - tls_main.listener_ctx_pool);
}
u32
tls_ctx_half_open_alloc (void)
{
tls_main_t *tm = &tls_main;
u8 will_expand = 0;
tls_ctx_t *ctx;
u32 ctx_index;
pool_get_aligned_will_expand (tm->half_open_ctx_pool, will_expand, 0);
if (PREDICT_FALSE (will_expand && vlib_num_workers ()))
{
clib_rwlock_writer_lock (&tm->half_open_rwlock);
pool_get (tm->half_open_ctx_pool, ctx);
ctx_index = ctx - tm->half_open_ctx_pool;
clib_rwlock_writer_unlock (&tm->half_open_rwlock);
}
else
{
/* reader lock assumption: only main thread will call pool_get */
clib_rwlock_reader_lock (&tm->half_open_rwlock);
pool_get (tm->half_open_ctx_pool, ctx);
ctx_index = ctx - tm->half_open_ctx_pool;
clib_rwlock_reader_unlock (&tm->half_open_rwlock);
}
clib_memset (ctx, 0, sizeof (*ctx));
return ctx_index;
}
void
tls_ctx_half_open_free (u32 ho_index)
{
tls_main_t *tm = &tls_main;
clib_rwlock_writer_lock (&tm->half_open_rwlock);
pool_put_index (tls_main.half_open_ctx_pool, ho_index);
clib_rwlock_writer_unlock (&tm->half_open_rwlock);
}
tls_ctx_t *
tls_ctx_half_open_get (u32 ctx_index)
{
tls_main_t *tm = &tls_main;
clib_rwlock_reader_lock (&tm->half_open_rwlock);
return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index);
}
void
tls_ctx_half_open_reader_unlock ()
{
clib_rwlock_reader_unlock (&tls_main.half_open_rwlock);
}
u32
tls_ctx_half_open_index (tls_ctx_t * ctx)
{
return (ctx - tls_main.half_open_ctx_pool);
}
void
tls_notify_app_enqueue (tls_ctx_t * ctx, session_t * app_session)
{
app_worker_t *app_wrk;
app_wrk = app_worker_get_if_valid (app_session->app_wrk_index);
if (PREDICT_TRUE (app_wrk != 0))
tls_add_app_q_evt (app_wrk, app_session);
}
int
tls_notify_app_accept (tls_ctx_t * ctx)
{
session_t *app_listener, *app_session;
app_worker_t *app_wrk;
tls_ctx_t *lctx;
int rv;
lctx = tls_listener_ctx_get (ctx->listener_ctx_index);
app_listener = listen_session_get_from_handle (lctx->app_session_handle);
app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
app_session->app_wrk_index = ctx->parent_app_wrk_index;
app_session->connection_index = ctx->tls_ctx_handle;
app_session->session_type = app_listener->session_type;
app_session->listener_handle = listen_session_get_handle (app_listener);
app_session->session_state = SESSION_STATE_ACCEPTING;
if ((rv = app_worker_init_accepted (app_session)))
{
TLS_DBG (1, "failed to allocate fifos");
session_free (app_session);
return rv;
}
ctx->app_session_handle = session_handle (app_session);
ctx->parent_app_wrk_index = app_session->app_wrk_index;
app_wrk = app_worker_get (app_session->app_wrk_index);
return app_worker_accept_notify (app_wrk, app_session);
}
int
tls_notify_app_connected (tls_ctx_t * ctx, session_error_t err)
{
session_t *app_session;
app_worker_t *app_wrk;
app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_index);
if (!app_wrk)
{
tls_disconnect_transport (ctx);
return -1;
}
if (err)
goto failed;
app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
app_session->app_wrk_index = ctx->parent_app_wrk_index;
app_session->connection_index = ctx->tls_ctx_handle;
app_session->session_type =
session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
if ((err = app_worker_init_connected (app_wrk, app_session)))
goto failed;
app_session->session_state = SESSION_STATE_CONNECTING;
if (app_worker_connect_notify (app_wrk, app_session,
SESSION_E_NONE, ctx->parent_app_api_context))
{
TLS_DBG (1, "failed to notify app");
tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
return -1;
}
ctx->app_session_handle = session_handle (app_session);
app_session->session_state = SESSION_STATE_READY;
return 0;
failed:
/* Free app session pre-allocated when transport was established */
session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
ctx->no_app_session = 1;
tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
return app_worker_connect_notify (app_wrk, 0, err,
ctx->parent_app_api_context);
}
static inline void
tls_ctx_parse_handle (u32 ctx_handle, u32 * ctx_index, u32 * engine_type)
{
*ctx_index = ctx_handle & TLS_IDX_MASK;
*engine_type = ctx_handle >> TLS_ENGINE_TYPE_SHIFT;
}
static inline crypto_engine_type_t
tls_get_engine_type (crypto_engine_type_t preferred)
{
if (!tls_vfts[preferred].ctx_alloc)
return tls_get_available_engine ();
return preferred;
}
static inline u32
tls_ctx_alloc (crypto_engine_type_t engine_type)
{
u32 ctx_index;
ctx_index = tls_vfts[engine_type].ctx_alloc ();
return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
}
static inline tls_ctx_t *
tls_ctx_get (u32 ctx_handle)
{
u32 ctx_index, engine_type;
tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
return tls_vfts[engine_type].ctx_get (ctx_index);
}
static inline tls_ctx_t *
tls_ctx_get_w_thread (u32 ctx_handle, u8 thread_index)
{
u32 ctx_index, engine_type;
tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
return tls_vfts[engine_type].ctx_get_w_thread (ctx_index, thread_index);
}
static inline int
tls_ctx_init_server (tls_ctx_t * ctx)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_init_server (ctx);
}
static inline int
tls_ctx_init_client (tls_ctx_t * ctx)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_init_client (ctx);
}
static inline int
tls_ctx_write (tls_ctx_t * ctx, session_t * app_session,
transport_send_params_t * sp)
{
u32 n_wrote;
sp->max_burst_size = sp->max_burst_size * TRANSPORT_PACER_MIN_MSS;
n_wrote = tls_vfts[ctx->tls_ctx_engine].ctx_write (ctx, app_session, sp);
return n_wrote > 0 ? clib_max (n_wrote / TRANSPORT_PACER_MIN_MSS, 1) : 0;
}
static inline int
tls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_read (ctx, tls_session);
}
static inline int
tls_ctx_transport_close (tls_ctx_t * ctx)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_transport_close (ctx);
}
static inline int
tls_ctx_app_close (tls_ctx_t * ctx)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_app_close (ctx);
}
void
tls_ctx_free (tls_ctx_t * ctx)
{
tls_vfts[ctx->tls_ctx_engine].ctx_free (ctx);
}
u8
tls_ctx_handshake_is_over (tls_ctx_t * ctx)
{
return tls_vfts[ctx->tls_ctx_engine].ctx_handshake_is_over (ctx);
}
void
tls_session_reset_callback (session_t * s)
{
tls_ctx_t *ctx;
transport_connection_t *tc;
session_t *app_session;
ctx = tls_ctx_get (s->opaque);
ctx->is_passive_close = 1;
tc = &ctx->connection;
if (tls_ctx_handshake_is_over (ctx))
{
session_transport_reset_notify (tc);
session_transport_closed_notify (tc);
tls_disconnect_transport (ctx);
}
else
if ((app_session =
session_get_if_valid (ctx->c_s_index, ctx->c_thread_index)))
{
session_free (app_session);
ctx->c_s_index = SESSION_INVALID_INDEX;
tls_disconnect_transport (ctx);
}
}
int
tls_add_segment_callback (u32 client_index, u64 segment_handle)
{
/* No-op for builtin */
return 0;
}
int
tls_del_segment_callback (u32 client_index, u64 segment_handle)
{
return 0;
}
void
tls_session_disconnect_callback (session_t * tls_session)
{
tls_ctx_t *ctx;
TLS_DBG (1, "TCP disconnecting handle %x session %u", tls_session->opaque,
tls_session->session_index);
ASSERT (tls_session->thread_index == vlib_get_thread_index ()
|| vlib_thread_is_main_w_barrier ());
ctx = tls_ctx_get_w_thread (tls_session->opaque, tls_session->thread_index);
ctx->is_passive_close = 1;
tls_ctx_transport_close (ctx);
}
int
tls_session_accept_callback (session_t * tls_session)
{
session_t *tls_listener, *app_session;
tls_ctx_t *lctx, *ctx;
u32 ctx_handle;
tls_listener =
listen_session_get_from_handle (tls_session->listener_handle);
lctx = tls_listener_ctx_get (tls_listener->opaque);
ctx_handle = tls_ctx_alloc (lctx->tls_ctx_engine);
ctx = tls_ctx_get (ctx_handle);
memcpy (ctx, lctx, sizeof (*lctx));
ctx->c_thread_index = vlib_get_thread_index ();
ctx->tls_ctx_handle = ctx_handle;
tls_session->session_state = SESSION_STATE_READY;
tls_session->opaque = ctx_handle;
ctx->tls_session_handle = session_handle (tls_session);
ctx->listener_ctx_index = tls_listener->opaque;
ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
ctx->ckpair_index = lctx->ckpair_index;
/* Preallocate app session. Avoids allocating a session post handshake
* on tls_session rx and potentially invalidating the session pool */
app_session = session_alloc (ctx->c_thread_index);
app_session->session_state = SESSION_STATE_CREATED;
ctx->c_s_index = app_session->session_index;
TLS_DBG (1, "Accept on listener %u new connection [%u]%x",
tls_listener->opaque, vlib_get_thread_index (), ctx_handle);
return tls_ctx_init_server (ctx);
}
int
tls_app_rx_callback (session_t * tls_session)
{
tls_ctx_t *ctx;
ctx = tls_ctx_get (tls_session->opaque);
tls_ctx_read (ctx, tls_session);
return 0;
}
int
tls_app_tx_callback (session_t * tls_session)
{
tls_ctx_t *ctx;
ctx = tls_ctx_get (tls_session->opaque);
transport_connection_reschedule (&ctx->connection);
return 0;
}
int
tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
session_t * tls_session, session_error_t err)
{
session_t *app_session;
tls_ctx_t *ho_ctx, *ctx;
u32 ctx_handle;
ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
if (err)
{
app_worker_t *app_wrk;
u32 api_context;
int rv = 0;
app_wrk = app_worker_get_if_valid (ho_ctx->parent_app_wrk_index);
if (app_wrk)
{
api_context = ho_ctx->c_s_index;
app_worker_connect_notify (app_wrk, 0, err, api_context);
}
tls_ctx_half_open_reader_unlock ();
tls_ctx_half_open_free (ho_ctx_index);
return rv;
}
ctx_handle = tls_ctx_alloc (ho_ctx->tls_ctx_engine);
ctx = tls_ctx_get (ctx_handle);
clib_memcpy_fast (ctx, ho_ctx, sizeof (*ctx));
tls_ctx_half_open_reader_unlock ();
tls_ctx_half_open_free (ho_ctx_index);
ctx->c_thread_index = vlib_get_thread_index ();
ctx->tls_ctx_handle = ctx_handle;
ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x",
ho_ctx_index, is_fail, vlib_get_thread_index (),
(ctx) ? ctx_handle : ~0);
ctx->tls_session_handle = session_handle (tls_session);
tls_session->opaque = ctx_handle;
tls_session->session_state = SESSION_STATE_READY;
/* Preallocate app session. Avoids allocating a session post handshake
* on tls_session rx and potentially invalidating the session pool */
app_session = session_alloc (ctx->c_thread_index);
app_session->session_state = SESSION_STATE_CREATED;
ctx->c_s_index = app_session->session_index;
return tls_ctx_init_client (ctx);
}
static void
tls_app_session_cleanup (session_t * s, session_cleanup_ntf_t ntf)
{
tls_ctx_t *ctx;
if (ntf == SESSION_CLEANUP_TRANSPORT)
{
/* Allow cleanup of tcp session */
if (s->session_state == SESSION_STATE_TRANSPORT_DELETED)
session_close (s);
return;
}
ctx = tls_ctx_get (s->opaque);
if (!ctx->no_app_session)
session_transport_delete_notify (&ctx->connection);
tls_ctx_free (ctx);
}
/* *INDENT-OFF* */
static session_cb_vft_t tls_app_cb_vft = {
.session_accept_callback = tls_session_accept_callback,
.session_disconnect_callback = tls_session_disconnect_callback,
.session_connected_callback = tls_session_connected_callback,
.session_reset_callback = tls_session_reset_callback,
.add_segment_callback = tls_add_segment_callback,
.del_segment_callback = tls_del_segment_callback,
.builtin_app_rx_callback = tls_app_rx_callback,
.builtin_app_tx_callback = tls_app_tx_callback,
.session_cleanup_callback = tls_app_session_cleanup,
};
/* *INDENT-ON* */
int
tls_connect (transport_endpoint_cfg_t * tep)
{
vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
session_endpoint_cfg_t *sep;
crypto_engine_type_t engine_type;
tls_main_t *tm = &tls_main;
app_worker_t *app_wrk;
application_t *app;
tls_ctx_t *ctx;
u32 ctx_index;
int rv;
sep = (session_endpoint_cfg_t *) tep;
app_wrk = app_worker_get (sep->app_wrk_index);
app = application_get (app_wrk->app_index);
engine_type = tls_get_engine_type (app->tls_engine);
if (engine_type == CRYPTO_ENGINE_NONE)
{
clib_warning ("No tls engine_type available");
return -1;
}
ctx_index = tls_ctx_half_open_alloc ();
ctx = tls_ctx_half_open_get (ctx_index);
ctx->parent_app_wrk_index = sep->app_wrk_index;
ctx->parent_app_api_context = sep->opaque;
ctx->tcp_is_ip4 = sep->is_ip4;
if (sep->hostname)
{
ctx->srv_hostname = format (0, "%v", sep->hostname);
vec_terminate_c_string (ctx->srv_hostname);
}
tls_ctx_half_open_reader_unlock ();
app_worker_alloc_connects_segment_manager (app_wrk);
ctx->tls_ctx_engine = engine_type;
clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
cargs->sep.transport_proto = TRANSPORT_PROTO_TCP;
cargs->app_index = tm->app_index;
cargs->api_context = ctx_index;
cargs->sep_ext.ns_index = app->ns_index;
if ((rv = vnet_connect (cargs)))
return rv;
TLS_DBG (1, "New connect request %u engine %d", ctx_index, engine_type);
return 0;
}
void
tls_disconnect (u32 ctx_handle, u32 thread_index)
{
tls_ctx_t *ctx;
TLS_DBG (1, "Disconnecting %x", ctx_handle);
ctx = tls_ctx_get (ctx_handle);
tls_ctx_app_close (ctx);
}
u32
tls_start_listen (u32 app_listener_index, transport_endpoint_t * tep)
{
vnet_listen_args_t _bargs, *args = &_bargs;
app_worker_t *app_wrk;
tls_main_t *tm = &tls_main;
session_handle_t tls_al_handle;
session_endpoint_cfg_t *sep;
session_t *tls_listener;
session_t *app_listener;
crypto_engine_type_t engine_type;
application_t *app;
app_listener_t *al;
tls_ctx_t *lctx;
u32 lctx_index;
sep = (session_endpoint_cfg_t *) tep;
app_wrk = app_worker_get (sep->app_wrk_index);
app = application_get (app_wrk->app_index);
engine_type = tls_get_engine_type (app->tls_engine);
if (engine_type == CRYPTO_ENGINE_NONE)
{
clib_warning ("No tls engine_type available");
return -1;
}
clib_memset (args, 0, sizeof (*args));
args->app_index = tm->app_index;
args->sep_ext = *sep;
args->sep_ext.ns_index = app->ns_index;
args->sep_ext.transport_proto = TRANSPORT_PROTO_TCP;
if (vnet_listen (args))
return -1;
lctx_index = tls_listener_ctx_alloc ();
tls_al_handle = args->handle;
al = app_listener_get_w_handle (tls_al_handle);
tls_listener = app_listener_get_session (al);
tls_listener->opaque = lctx_index;
app_listener = listen_session_get (app_listener_index);
lctx = tls_listener_ctx_get (lctx_index);
lctx->parent_app_wrk_index = sep->app_wrk_index;
lctx->tls_session_handle = tls_al_handle;
lctx->app_session_handle = listen_session_get_handle (app_listener);
lctx->tcp_is_ip4 = sep->is_ip4;
lctx->tls_ctx_engine = engine_type;
lctx->ckpair_index = sep->ckpair_index;
if (tls_vfts[engine_type].ctx_start_listen (lctx))
{
vnet_unlisten_args_t a = {
.handle = lctx->tls_session_handle,
.app_index = tls_main.app_index,
.wrk_map_index = 0
};
if ((vnet_unlisten (&a)))
clib_warning ("unlisten returned");
tls_listener_ctx_free (lctx);
lctx_index = SESSION_INVALID_INDEX;
}
TLS_DBG (1, "Started listening %d, engine type %d", lctx_index,
engine_type);
return lctx_index;
}
u32
tls_stop_listen (u32 lctx_index)
{
session_endpoint_t sep = SESSION_ENDPOINT_NULL;
crypto_engine_type_t engine_type;
transport_connection_t *lc;
tls_ctx_t *lctx;
session_t *ls;
int rv;
lctx = tls_listener_ctx_get (lctx_index);
/* Cleanup listener from session lookup table */
ls = session_get_from_handle (lctx->tls_session_handle);
lc = session_get_transport (ls);
sep.fib_index = lc->fib_index;
sep.port = lc->lcl_port;
sep.is_ip4 = lc->is_ip4;
sep.transport_proto = TRANSPORT_PROTO_TLS;
clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip));
session_lookup_del_session_endpoint2 (&sep);
vnet_unlisten_args_t a = {
.handle = lctx->tls_session_handle,
.app_index = tls_main.app_index,
.wrk_map_index = 0 /* default wrk */
};
if ((rv = vnet_unlisten (&a)))
clib_warning ("unlisten returned %d", rv);
engine_type = lctx->tls_ctx_engine;
tls_vfts[engine_type].ctx_stop_listen (lctx);
tls_listener_ctx_free (lctx);
return 0;
}
transport_connection_t *
tls_connection_get (u32 ctx_index, u32 thread_index)
{
tls_ctx_t *ctx;
ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
return &ctx->connection;
}
transport_connection_t *
tls_listener_get (u32 listener_index)
{
tls_ctx_t *ctx;
ctx = tls_listener_ctx_get (listener_index);
return &ctx->connection;
}
int
tls_custom_tx_callback (void *session, transport_send_params_t * sp)
{
session_t *app_session = (session_t *) session;
tls_ctx_t *ctx;
if (PREDICT_FALSE (app_session->session_state
>= SESSION_STATE_TRANSPORT_CLOSED))
return 0;
ctx = tls_ctx_get (app_session->connection_index);
return tls_ctx_write (ctx, app_session, sp);
}
u8 *
format_tls_ctx (u8 * s, va_list * args)
{
u32 tcp_si, tcp_ti, ctx_index, ctx_engine, app_si, app_ti;
tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *);
session_parse_handle (ctx->tls_session_handle, &tcp_si, &tcp_ti);
tls_ctx_parse_handle (ctx->tls_ctx_handle, &ctx_index, &ctx_engine);
session_parse_handle (ctx->app_session_handle, &app_si, &app_ti);
s = format (s, "[%d:%d][TLS] app_wrk %u index %u engine %u tcp %d:%d",
app_ti, app_si, ctx->parent_app_wrk_index, ctx_index,
ctx_engine, tcp_ti, tcp_si);
return s;
}
static u8 *
format_tls_listener_ctx (u8 * s, va_list * args)
{
session_t *tls_listener;
app_listener_t *al;
u32 app_si, app_ti;
tls_ctx_t *ctx;
ctx = va_arg (*args, tls_ctx_t *);
al = app_listener_get_w_handle (ctx->tls_session_handle);
tls_listener = app_listener_get_session (al);
session_parse_handle (ctx->app_session_handle, &app_si, &app_ti);
s = format (s, "[%d:%d][TLS] app_wrk %u engine %u tcp %d:%d",
app_ti, app_si, ctx->parent_app_wrk_index, ctx->tls_ctx_engine,
tls_listener->thread_index, tls_listener->session_index);
return s;
}
static u8 *
format_tls_ctx_state (u8 * s, va_list * args)
{
tls_ctx_t *ctx;
session_t *ts;
ctx = va_arg (*args, tls_ctx_t *);
ts = session_get_from_handle (ctx->app_session_handle);
if (ts->session_state == SESSION_STATE_LISTENING)
s = format (s, "%s", "LISTEN");
else
{
if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
s = format (s, "%s", "CLOSED");
else if (ts->session_state == SESSION_STATE_APP_CLOSED)
s = format (s, "%s", "APP-CLOSED");
else if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
s = format (s, "%s", "CLOSING");
else if (tls_ctx_handshake_is_over (ctx))
s = format (s, "%s", "ESTABLISHED");
else
s = format (s, "%s", "HANDSHAKE");
}
return s;
}
u8 *
format_tls_connection (u8 * s, va_list * args)
{
u32 ctx_index = va_arg (*args, u32);
u32 thread_index = va_arg (*args, u32);
u32 verbose = va_arg (*args, u32);
tls_ctx_t *ctx;
ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
if (!ctx)
return s;
s = format (s, "%-50U", format_tls_ctx, ctx);
if (verbose)
{
s = format (s, "%-15U", format_tls_ctx_state, ctx);
if (verbose > 1)
s = format (s, "\n");
}
return s;
}
u8 *
format_tls_listener (u8 * s, va_list * args)
{
u32 tc_index = va_arg (*args, u32);
u32 __clib_unused thread_index = va_arg (*args, u32);
u32 verbose = va_arg (*args, u32);
tls_ctx_t *ctx = tls_listener_ctx_get (tc_index);
s = format (s, "%-50U", format_tls_listener_ctx, ctx);
if (verbose)
s = format (s, "%-15U", format_tls_ctx_state, ctx);
return s;
}
u8 *
format_tls_half_open (u8 * s, va_list * args)
{
u32 tc_index = va_arg (*args, u32);
u32 __clib_unused thread_index = va_arg (*args, u32);
tls_ctx_t *ctx = tls_ctx_half_open_get (tc_index);
s = format (s, "[TLS] half-open app %u", ctx->parent_app_wrk_index);
tls_ctx_half_open_reader_unlock ();
return s;
}
static void
tls_transport_endpoint_get (u32 ctx_handle, u32 thread_index,
transport_endpoint_t * tep, u8 is_lcl)
{
tls_ctx_t *ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
session_t *tcp_session;
tcp_session = session_get_from_handle (ctx->tls_session_handle);
session_get_endpoint (tcp_session, tep, is_lcl);
}
static void
tls_transport_listener_endpoint_get (u32 ctx_handle,
transport_endpoint_t * tep, u8 is_lcl)
{
session_t *tls_listener;
app_listener_t *al;
tls_ctx_t *ctx = tls_listener_ctx_get (ctx_handle);
al = app_listener_get_w_handle (ctx->tls_session_handle);
tls_listener = app_listener_get_session (al);
session_get_endpoint (tls_listener, tep, is_lcl);
}
/* *INDENT-OFF* */
static const transport_proto_vft_t tls_proto = {
.connect = tls_connect,
.close = tls_disconnect,
.start_listen = tls_start_listen,
.stop_listen = tls_stop_listen,
.get_connection = tls_connection_get,
.get_listener = tls_listener_get,
.custom_tx = tls_custom_tx_callback,
.format_connection = format_tls_connection,
.format_half_open = format_tls_half_open,
.format_listener = format_tls_listener,
.get_transport_endpoint = tls_transport_endpoint_get,
.get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
.transport_options = {
.name = "tls",
.short_name = "J",
.tx_type = TRANSPORT_TX_INTERNAL,
.service_type = TRANSPORT_SERVICE_APP,
},
};
/* *INDENT-ON* */
void
tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type)
{
vec_validate (tls_vfts, type);
tls_vfts[type] = *vft;
}
static clib_error_t *
tls_init (vlib_main_t * vm)
{
u32 add_segment_size = 256 << 20, first_seg_size = 32 << 20;
vlib_thread_main_t *vtm = vlib_get_thread_main ();
u32 num_threads, fifo_size = 128 << 12;
vnet_app_attach_args_t _a, *a = &_a;
u64 options[APP_OPTIONS_N_OPTIONS];
tls_main_t *tm = &tls_main;
first_seg_size = tm->first_seg_size ? tm->first_seg_size : first_seg_size;
fifo_size = tm->fifo_size ? tm->fifo_size : fifo_size;
num_threads = 1 /* main thread */ + vtm->n_threads;
clib_memset (a, 0, sizeof (*a));
clib_memset (options, 0, sizeof (options));
a->session_cb_vft = &tls_app_cb_vft;
a->api_client_index = APP_INVALID_INDEX;
a->options = options;
a->name = format (0, "tls");
a->options[APP_OPTIONS_SEGMENT_SIZE] = first_seg_size;
a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = add_segment_size;
a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size;
a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size;
a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
if (vnet_application_attach (a))
{
clib_warning ("failed to attach tls app");
return clib_error_return (0, "failed to attach tls app");
}
if (!tm->ca_cert_path)
tm->ca_cert_path = TLS_CA_CERT_PATH;
tm->app_index = a->app_index;
clib_rwlock_init (&tm->half_open_rwlock);
vec_validate (tm->rx_bufs, num_threads - 1);
vec_validate (tm->tx_bufs, num_threads - 1);
transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
FIB_PROTOCOL_IP4, ~0);
transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
FIB_PROTOCOL_IP6, ~0);
vec_free (a->name);
return 0;
}
VLIB_INIT_FUNCTION (tls_init);
static clib_error_t *
tls_config_fn (vlib_main_t * vm, unformat_input_t * input)
{
tls_main_t *tm = &tls_main;
uword tmp;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "use-test-cert-in-ca"))
tm->use_test_cert_in_ca = 1;
else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path))
;
else if (unformat (input, "first-segment-size %U", unformat_memory_size,
&tm->first_seg_size))
;
else if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp))
{
if (tmp >= 0x100000000ULL)
{
return clib_error_return
(0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
}
tm->fifo_size = tmp;
}
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
}
return 0;
}
VLIB_EARLY_CONFIG_FUNCTION (tls_config_fn, "tls");
tls_main_t *
vnet_tls_get_main (void)
{
return &tls_main;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
