/*
* Copyright (c) 2017 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.
*/
#ifndef included_clib_lock_h
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}
/*
* Copyright (c) 2016 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.
*/
#ifndef __included_uri_h__
#define __included_uri_h__
#include <svm/svm_fifo_segment.h>
#include <vnet/session/session.h>
#include <vnet/session/application.h>
#include <vnet/session/transport.h>
#include <vnet/tls/tls.h>
typedef struct _vnet_app_attach_args_t
{
/** Binary API client index */
u32 api_client_index;
/** Application name. Used by builtin apps */
u8 *name;
/** Application and segment manager options */
u64 *options;
/** ID of the namespace the app has access to */
u8 *namespace_id;
/** Session to application callback functions */
session_cb_vft_t *session_cb_vft;
/*
* Results
*/
ssvm_private_t *segment;
u64 app_event_queue_address;
u32 app_index;
} vnet_app_attach_args_t;
typedef struct _vnet_app_detach_args_t
{
u32 app_index;
} vnet_app_detach_args_t;
typedef struct _vnet_bind_args_t
{
union
{
char *uri;
session_endpoint_t sep;
};
u32 app_index;
/*
* Results
*/
char *segment_name;
u32 segment_name_length;
u64 server_event_queue_address;
u64 handle;
} vnet_bind_args_t;
typedef struct _vnet_unbind_args_t
{
union
{
char *uri;
u64 handle;
};
u32 app_index;
} vnet_unbind_args_t;
typedef struct _vnet_connect_args
{
union
{
char *uri;
session_endpoint_extended_t sep;
};
u32 app_index;
u32 api_context;
session_handle_t session_handle;
} vnet_connect_args_t;
typedef struct _vnet_disconnect_args_t
{
session_handle_t handle;
u32 app_index;
} vnet_disconnect_args_t;
typedef struct _vnet_application_add_tls_cert_args_t
{
u32 app_index;
u8 *cert;
} vnet_app_add_tls_cert_args_t;
typedef struct _vnet_application_add_tls_key_args_t
{
u32 app_index;
u8 *key;
} vnet_app_add_tls_key_args_t;
/* Application attach options */
typedef enum
{
APP_OPTIONS_FLAGS,
APP_OPTIONS_EVT_QUEUE_SIZE,
APP_OPTIONS_SEGMENT_SIZE,
APP_OPTIONS_ADD_SEGMENT_SIZE,
APP_OPTIONS_PRIVATE_SEGMENT_COUNT,
APP_OPTIONS_RX_FIFO_SIZE,
APP_OPTIONS_TX_FIFO_SIZE,
APP_OPTIONS_PREALLOC_FIFO_PAIRS,
APP_OPTIONS_NAMESPACE,
APP_OPTIONS_NAMESPACE_SECRET,
APP_OPTIONS_PROXY_TRANSPORT,
APP_OPTIONS_ACCEPT_COOKIE,
APP_OPTIONS_TLS_ENGINE,
APP_OPTIONS_N_OPTIONS
} app_attach_options_index_t;
#define foreach_app_options_flags \
_(ACCEPT_REDIRECT, "Use FIFO with redirects") \
_(ADD_SEGMENT, "Add segment and signal app if needed") \
_(IS_BUILTIN, "Application is builtin") \
_(IS_PROXY, "Application is proxying") \
_(USE_GLOBAL_SCOPE, "App can use global session scope") \
_(USE_LOCAL_SCOPE, "App can use local session scope") \
_(USE_MQ_FOR_CTRL_MSGS, "Use message queue for ctr msgs") \
typedef enum _app_options
{
#define _(sym, str) APP_OPTIONS_##sym,
foreach_app_options_flags
#undef _
} app_options_t;
typedef enum _app_options_flags
{
#define _(sym, str) APP_OPTIONS_FLAGS_##sym = 1 << APP_OPTIONS_##sym,
foreach_app_options_flags
#undef _
} app_options_flags_t;
int vnet_bind_uri (vnet_bind_args_t *);
int vnet_unbind_uri (vnet_unbind_args_t * a);
clib_error_t *vnet_connect_uri (vnet_connect_args_t * a);
clib_error_t *vnet_application_attach (vnet_app_attach_args_t * a);
clib_error_t *vnet_bind (vnet_bind_args_t * a);
clib_error_t *vnet_connect (vnet_connect_args_t * a);
clib_error_t *vnet_unbind (vnet_unbind_args_t * a);
int vnet_application_detach (vnet_app_detach_args_t * a);
int vnet_disconnect_session (vnet_disconnect_args_t * a);
clib_error_t *vnet_app_add_tls_cert (vnet_app_add_tls_cert_args_t * a);
clib_error_t *vnet_app_add_tls_key (vnet_app_add_tls_key_args_t * a);
extern const char test_srv_crt_rsa[];
extern const u32 test_srv_crt_rsa_len;
extern const char test_srv_key_rsa[];
extern const u32 test_srv_key_rsa_len;
typedef struct app_session_transport_
{
ip46_address_t rmt_ip; /**< remote ip */
ip46_address_t lcl_ip; /**< local ip */
u16 rmt_port; /**< remote port (network order) */
u16 lcl_port; /**< local port (network order) */
u8 is_ip4; /**< set if uses ip4 networking */
} app_session_transport_t;
#define foreach_app_session_field \
_(svm_fifo_t, *rx_fifo) /**< rx fifo */ \
_(svm_fifo_t, *tx_fifo) /**< tx fifo */ \
_(session_type_t, session_type) /**< session type */ \
_(volatile u8, session_state) /**< session state */ \
_(u32, session_index) /**< index in owning pool */ \
_(app_session_transport_t, transport) /**< transport info */ \
_(svm_msg_q_t, *vpp_evt_q) /**< vpp event queue */ \
_(u8, is_dgram) /**< flag for dgram mode */ \
typedef struct
{
#define _(type, name) type name;
foreach_app_session_field
#undef _
} app_session_t;
typedef struct session_accepted_msg_
{
u32 context;
u64 listener_handle;
u64 handle;
u64 server_rx_fifo;
u64 server_tx_fifo;
u64 vpp_event_queue_address;
u64 server_event_queue_address;
u64 client_event_queue_address;
u16 port;
u8 is_ip4;
u8 ip[16];
} __clib_packed session_accepted_msg_t;
typedef struct session_accepted_reply_msg_
{
u32 context;
i32 retval;
u64 handle;
} __clib_packed session_accepted_reply_msg_t;
/* Make sure this is not too large, otherwise it won't fit when dequeued in
* the session queue node */
STATIC_ASSERT (sizeof (session_accepted_reply_msg_t) <= 16, "accept reply");
typedef struct session_connected_msg_
{
u32 context;
i32 retval;
u64 handle;
u64 server_rx_fifo;
u64 server_tx_fifo;
u64 vpp_event_queue_address;
u64 client_event_queue_address;
u64 server_event_queue_address;
u32 segment_size;
u8 segment_name_length;
u8 segment_name[64];
u8 lcl_ip[16];
u8 is_ip4;
u16 lcl_port;
} __clib_packed session_connected_msg_t;
typedef struct session_disconnected_msg_
{
u32 client_index;
u32 context;
u64 handle;
} __clib_packed session_disconnected_msg_t;
typedef struct session_disconnected_reply_msg_
{
u32 context;
i32 retval;
u64 handle;
} __clib_packed session_disconnected_reply_msg_t;
typedef struct session_reset_msg_
{
u32 client_index;
u32 context;
u64 handle;
} __clib_packed session_reset_msg_t;
typedef struct session_reset_reply_msg_
{
u32 client_index;
u32 context;
i32 retval;
u64 handle;
} __clib_packed session_reset_reply_msg_t;
typedef struct app_session_event_
{
svm_msg_q_msg_t msg;
session_event_t *evt;
} __clib_packed app_session_evt_t;
static inline void
app_alloc_ctrl_evt_to_vpp (svm_msg_q_t * mq, app_session_evt_t * app_evt,
u8 evt_type)
{
svm_msg_q_lock_and_alloc_msg_w_ring (mq,
SESSION_MQ_CTRL_EVT_RING,
SVM_Q_WAIT, &app_evt->msg);
svm_msg_q_unlock (mq);
app_evt->evt = svm_msg_q_msg_data (mq, &app_evt->msg);
memset (app_evt->evt, 0, sizeof (*app_evt->evt));
app_evt->evt->event_type = evt_type;
}
static inline void
app_send_ctrl_evt_to_vpp (svm_msg_q_t * mq, app_session_evt_t * app_evt)
{
svm_msg_q_add (mq, &app_evt->msg, SVM_Q_WAIT);
}
/**
* Send fifo io event to vpp worker thread
*
* Because there may be multiple writers to one of vpp's queues, this
* protects message allocation and enqueueing.
*
* @param mq vpp message queue
* @param f fifo for which the event is sent
* @param evt_type type of event
* @param noblock flag to indicate is request is blocking or not
* @return 0 if success, negative integer otherwise
*/
static inline int
app_send_io_evt_to_vpp (svm_msg_q_t * mq, svm_fifo_t * f, u8 evt_type,
u8 noblock)
{
session_event_t *evt;
svm_msg_q_msg_t msg;
if (noblock)
{
if (svm_msg_q_try_lock (mq))
return -1;
if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)))
{
svm_msg_q_unlock (mq);
return -2;
}
msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
if (PREDICT_FALSE (svm_msg_q_msg_is_invalid (&msg)))
{
svm_msg_q_unlock (mq);
return -2;
}
evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
evt->fifo = f;
evt->event_type = evt_type;
svm_msg_q_add_and_unlock (mq, &msg);
return 0;
}
else
{
svm_msg_q_lock (mq);
while (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING))
svm_msg_q_wait (mq);
msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
evt->fifo = f;
evt->event_type = evt_type;
if (svm_msg_q_is_full (mq))
svm_msg_q_wait (mq);
svm_msg_q_add_and_unlock (mq, &msg);
return 0;
}
}
always_inline int
app_send_dgram_raw (svm_fifo_t * f, app_session_transport_t * at,
svm_msg_q_t * vpp_evt_q, u8 * data, u32 len, u8 evt_type,
u8 noblock)
{
u32 max_enqueue, actual_write;
session_dgram_hdr_t hdr;
int rv;
max_enqueue = svm_fifo_max_enqueue (f);
if (max_enqueue <= sizeof (session_dgram_hdr_t))
return 0;
max_enqueue -= sizeof (session_dgram_hdr_t);
actual_write = clib_min (len, max_enqueue);
hdr.data_length = actual_write;
hdr.data_offset = 0;
clib_memcpy (&hdr.rmt_ip, &at->rmt_ip, sizeof (ip46_address_t));
hdr.is_ip4 = at->is_ip4;
hdr.rmt_port = at->rmt_port;
clib_memcpy (&hdr.lcl_ip, &at->lcl_ip, sizeof (ip46_address_t));
hdr.lcl_port = at->lcl_port;
rv = svm_fifo_enqueue_nowait (f, sizeof (hdr), (u8 *) & hdr);
ASSERT (rv == sizeof (hdr));
if ((rv = svm_fifo_enqueue_nowait (f, actual_write, data)) > 0)
{
if (svm_fifo_set_event (f))
app_send_io_evt_to_vpp (vpp_evt_q, f, evt_type, noblock);
}
ASSERT (rv);
return rv;
}
always_inline int
app_send_dgram (app_session_t * s, u8 * data, u32 len, u8 noblock)
{
return app_send_dgram_raw (s->tx_fifo, &s->transport, s->vpp_evt_q, data,
len, FIFO_EVENT_APP_TX, noblock);
}
always_inline int
app_send_stream_raw (svm_fifo_t * f, svm_msg_q_t * vpp_evt_q, u8 * data,
u32 len, u8 evt_type, u8 noblock)
{
int rv;
if ((rv = svm_fifo_enqueue_nowait (f, len, data)) > 0)
{
if (svm_fifo_set_event (f))
app_send_io_evt_to_vpp (vpp_evt_q, f, evt_type, noblock);
}
return rv;
}
always_inline int
app_send_stream (app_session_t * s, u8 * data, u32 len, u8 noblock)
{
return app_send_stream_raw (s->tx_fifo, s->vpp_evt_q, data, len,
FIFO_EVENT_APP_TX, noblock);
}
always_inline int
app_send (app_session_t * s, u8 * data, u32 len, u8 noblock)
{
if (s->is_dgram)
return app_send_dgram (s, data, len, noblock);
return app_send_stream (s, data, len, noblock);
}
always_inline int
app_recv_dgram_raw (svm_fifo_t * f, u8 * buf, u32 len,
app_session_transport_t * at, u8 clear_evt, u8 peek)
{
session_dgram_pre_hdr_t ph;
u32 max_deq;
int rv;
max_deq = svm_fifo_max_dequeue (f);
if (max_deq < sizeof (session_dgram_hdr_t))
{
if (clear_evt)
svm_fifo_unset_event (f);
return 0;
}
if (clear_evt)
svm_fifo_unset_event (f);
svm_fifo_peek (f, 0, sizeof (ph), (u8 *) & ph);
ASSERT (ph.data_length >= ph.data_offset);
if (!ph.data_offset)
svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
len = clib_min (len, ph.data_length - ph.data_offset);
rv = svm_fifo_peek (f, ph.data_offset + SESSION_CONN_HDR_LEN, len, buf);
if (peek)
return rv;
ph.data_offset += rv;
if (ph.data_offset == ph.data_length)
svm_fifo_dequeue_drop (f, ph.data_length + SESSION_CONN_HDR_LEN);
else
svm_fifo_overwrite_head (f, (u8 *) & ph, sizeof (ph));
return rv;
}
always_inline int
app_recv_dgram (app_session_t * s, u8 * buf, u32 len)
{
return app_recv_dgram_raw (s->rx_fifo, buf, len, &s->transport, 1, 0);
}
always_inline int
app_recv_stream_raw (svm_fifo_t * f, u8 * buf, u32 len, u8 clear_evt, u8 peek)
{
if (clear_evt)
svm_fifo_unset_event (f);
if (peek)
return svm_fifo_peek (f, 0, len, buf);
return svm_fifo_dequeue_nowait (f, len, buf);
}
always_inline int
app_recv_stream (app_session_t * s, u8 * buf, u32 len)
{
return app_recv_stream_raw (s->rx_fifo, buf, len, 1, 0);
}
always_inline int
app_recv (app_session_t * s, u8 * data, u32 len)
{
if (s->is_dgram)
return app_recv_dgram (s, data, len);
return app_recv_stream (s, data, len);
}
#endif /* __included_uri_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
