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/*
* 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 SRC_VNET_SESSION_STREAM_SESSION_H_
#define SRC_VNET_SESSION_STREAM_SESSION_H_
#include <svm/svm_fifo.h>
#include <vnet/session/transport.h>
typedef u8 session_type_t;
/*
* Application session state
*/
typedef enum
{
SESSION_STATE_LISTENING,
SESSION_STATE_CONNECTING,
SESSION_STATE_ACCEPTING,
SESSION_STATE_READY,
SESSION_STATE_OPENED,
SESSION_STATE_TRANSPORT_CLOSING,
SESSION_STATE_CLOSING,
SESSION_STATE_CLOSED,
SESSION_STATE_N_STATES,
} stream_session_state_t;
typedef struct generic_session_
{
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 */
} generic_session_t;
typedef struct _stream_session_t
{
/** fifo pointers. Once allocated, these do not move */
svm_fifo_t *server_rx_fifo;
svm_fifo_t *server_tx_fifo;
/** Type */
session_type_t session_type;
/** State */
volatile u8 session_state;
/** Session index in per_thread pool */
u32 session_index;
/** App worker pool index */
u32 app_wrk_index;
u8 thread_index;
/** To avoid n**2 "one event per frame" check */
u8 enqueue_epoch;
/** svm segment index where fifos were allocated */
u32 svm_segment_index;
/** Transport specific */
u32 connection_index;
union
{
/** Parent listener session if the result of an accept */
u32 listener_index;
/** Application index if a listener */
u32 app_index;
};
union
{
/** Transport app index for apps acting as transports */
u32 t_app_index;
/** Index in listener app's listener db */
u32 listener_db_index;
/** Opaque, for general use */
u32 opaque;
};
CLIB_CACHE_LINE_ALIGN_MARK (pad);
} stream_session_t;
typedef struct local_session_
{
/** fifo pointers. Once allocated, these do not move */
svm_fifo_t *server_rx_fifo;
svm_fifo_t *server_tx_fifo;
/** Type */
session_type_t session_type;
/** State */
volatile u8 session_state;
/** Session index */
u32 session_index;
/** Server index */
u32 app_wrk_index;
/** Port for connection. Overlaps thread_index/enqueue_epoch */
u16 port;
/** Segment index where fifos were allocated */
u32 svm_segment_index;
/** Transport listener index. Overlaps connection index */
u32 transport_listener_index;
union
{
u32 listener_index;
u32 app_index;
};
u32 listener_db_index;
/** Has transport embedded when listener not purely local */
session_type_t listener_session_type;
/**
* Client data
*/
u32 client_wrk_index;
u32 client_opaque;
u64 server_evt_q;
u64 client_evt_q;
CLIB_CACHE_LINE_ALIGN_MARK (pad);
} local_session_t;
#define foreach_session_endpoint_fields \
foreach_transport_connection_fields \
_(u8, transport_proto) \
typedef struct _session_endpoint
{
#define _(type, name) type name;
foreach_session_endpoint_fields
#undef _
} session_endpoint_t;
typedef struct _session_endpoint_extended
{
#define _(type, name) type name;
foreach_session_endpoint_fields
#undef _
u32 app_wrk_index;
u32 opaque;
u8 *hostname;
} session_endpoint_extended_t;
#define SESSION_IP46_ZERO \
{ \
.ip6 = { \
{ 0, 0, }, \
}, \
}
#define SESSION_ENDPOINT_NULL \
{ \
.sw_if_index = ENDPOINT_INVALID_INDEX, \
.ip = SESSION_IP46_ZERO, \
.fib_index = ENDPOINT_INVALID_INDEX, \
.is_ip4 = 0, \
.port = 0, \
.transport_proto = 0, \
}
#define SESSION_ENDPOINT_EXT_NULL \
{ \
.sw_if_index = ENDPOINT_INVALID_INDEX, \
.ip = SESSION_IP46_ZERO, \
.fib_index = ENDPOINT_INVALID_INDEX, \
.is_ip4 = 0, \
.port = 0, \
.transport_proto = 0, \
.app_wrk_index = ENDPOINT_INVALID_INDEX, \
.opaque = ENDPOINT_INVALID_INDEX, \
.hostname = 0, \
}
#define session_endpoint_to_transport(_sep) ((transport_endpoint_t *)_sep)
always_inline u8
session_endpoint_fib_proto (session_endpoint_t * sep)
{
return sep->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
}
#endif /* SRC_VNET_SESSION_STREAM_SESSION_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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