session_types.h File Reference

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Data Structures
struct	session_
struct	session_rpc_args_t
struct	session_dgram_pre_hdr_
struct	session_dgram_header_

Macros
#define	SESSION_INVALID_INDEX   ((u32)~0)
#define	SESSION_INVALID_HANDLE   ((u64)~0)
#define	SESSION_CTRL_MSG_MAX_SIZE   86
#define	SESSION_NODE_FRAME_SIZE   128
#define	foreach_session_endpoint_fields
#define	SESSION_IP46_ZERO
#define	TRANSPORT_ENDPOINT_NULL
#define	SESSION_ENDPOINT_NULL
#define	SESSION_ENDPOINT_CFG_NULL
#define	session_endpoint_to_transport(_sep)   ((transport_endpoint_t *)_sep)
#define	session_endpoint_to_transport_cfg(_sep)   ((transport_endpoint_cfg_t *)_sep)
#define	foreach_session_state
#define	foreach_session_flag
#define	foreach_session_ctrl_evt
#define	FIFO_EVENT_APP_RX   SESSION_IO_EVT_RX
#define	FIFO_EVENT_APP_TX   SESSION_IO_EVT_TX
#define	FIFO_EVENT_DISCONNECT   SESSION_CTRL_EVT_CLOSE
#define	FIFO_EVENT_BUILTIN_RX   SESSION_IO_EVT_BUILTIN_RX
#define	FIFO_EVENT_BUILTIN_TX   SESSION_IO_EVT_BUILTIN_TX
#define	SESSION_MSG_NULL   { }
#define	SESSION_CONN_ID_LEN   37
#define	SESSION_CONN_HDR_LEN   45
#define	foreach_session_error
#define	SESSION_CLI_ID_LEN   "60"
#define	SESSION_CLI_STATE_LEN   "15"
#define	SESSION_ERROR_SEG_CREATE   SESSION_E_SEG_CREATE
#define	SESSION_ERROR_NO_SPACE   SESSION_E_SEG_NO_SPACE
#define	SESSION_ERROR_NEW_SEG_NO_SPACE   SESSION_E_SEG_NO_SPACE2

Typedefs
typedef struct _session_endpoint	session_endpoint_t
typedef struct _session_endpoint_cfg	session_endpoint_cfg_t
typedef u8	session_type_t
typedef u64	session_handle_t
typedef enum session_ft_action_	session_ft_action_t
typedef enum session_flags_bits_	session_flag_bits_t
typedef enum session_flags_	session_flags_t
typedef struct session_	session_t
typedef struct session_dgram_pre_hdr_	session_dgram_pre_hdr_t
typedef struct session_dgram_header_	session_dgram_hdr_t
typedef enum session_error_p_	session_error_p_t
typedef enum session_error_	session_error_t

Enumerations
enum	session_cleanup_ntf_t { SESSION_CLEANUP_TRANSPORT, SESSION_CLEANUP_SESSION }
enum	session_ft_action_ { SESSION_FT_ACTION_ENQUEUED, SESSION_FT_ACTION_DEQUEUED, SESSION_FT_ACTION_N_ACTIONS }
enum	session_state_t { SESSION_N_STATES }
enum	session_flags_bits_ { SESSION_N_FLAGS }
enum	session_flags_ { foreach_session_flag }
enum	session_evt_type_t {   SESSION_IO_EVT_RX, SESSION_IO_EVT_TX, SESSION_IO_EVT_TX_FLUSH, SESSION_IO_EVT_BUILTIN_RX,   SESSION_IO_EVT_BUILTIN_TX, SESSION_CTRL_EVT_RPC, SESSION_CTRL_EVT_HALF_CLOSE, SESSION_CTRL_EVT_CLOSE,   SESSION_CTRL_EVT_RESET, SESSION_CTRL_EVT_BOUND, SESSION_CTRL_EVT_UNLISTEN_REPLY, SESSION_CTRL_EVT_ACCEPTED,   SESSION_CTRL_EVT_ACCEPTED_REPLY, SESSION_CTRL_EVT_CONNECTED, SESSION_CTRL_EVT_DISCONNECTED, SESSION_CTRL_EVT_DISCONNECTED_REPLY,   SESSION_CTRL_EVT_RESET_REPLY, SESSION_CTRL_EVT_REQ_WORKER_UPDATE, SESSION_CTRL_EVT_WORKER_UPDATE, SESSION_CTRL_EVT_WORKER_UPDATE_REPLY,   SESSION_CTRL_EVT_SHUTDOWN, SESSION_CTRL_EVT_DISCONNECT, SESSION_CTRL_EVT_CONNECT, SESSION_CTRL_EVT_CONNECT_URI,   SESSION_CTRL_EVT_LISTEN, SESSION_CTRL_EVT_LISTEN_URI, SESSION_CTRL_EVT_UNLISTEN, SESSION_CTRL_EVT_APP_DETACH,   SESSION_CTRL_EVT_APP_ADD_SEGMENT, SESSION_CTRL_EVT_APP_DEL_SEGMENT, SESSION_CTRL_EVT_MIGRATED, SESSION_CTRL_EVT_CLEANUP,   SESSION_CTRL_EVT_APP_WRK_RPC, SESSION_CTRL_EVT_TRANSPORT_ATTR, SESSION_CTRL_EVT_TRANSPORT_ATTR_REPLY }
enum	session_mq_rings_e { SESSION_MQ_IO_EVT_RING, SESSION_MQ_CTRL_EVT_RING, SESSION_MQ_N_RINGS }
enum	session_error_p_ { SESSION_N_ERRORS }
enum	session_error_ { foreach_session_error }

Functions
static u8	session_endpoint_fib_proto (session_endpoint_t *sep)
static u8	session_endpoint_is_local (session_endpoint_t *sep)
static u8	session_endpoint_is_zero (session_endpoint_t *sep)
static session_type_t	session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4)
static transport_proto_t	session_type_transport_proto (session_type_t st)
static u8	session_type_is_ip4 (session_type_t st)
static transport_proto_t	session_get_transport_proto (session_t *s)
static fib_protocol_t	session_get_fib_proto (session_t *s)
static u8	session_has_transport (session_t *s)
static transport_service_type_t	session_transport_service_type (session_t *s)
static transport_tx_fn_type_t	session_transport_tx_fn_type (session_t *s)
static u8	session_tx_is_dgram (session_t *s)
static session_handle_t	session_handle (session_t *s)
static u32	session_index_from_handle (session_handle_t handle)
static u32	session_thread_from_handle (session_handle_t handle)
static void	session_parse_handle (session_handle_t handle, u32 *index, u32 *thread_index)
static session_handle_t	session_make_handle (u32 session_index, u32 data)
static u32	session_handle_index (session_handle_t ho_handle)
static u32	session_handle_data (session_handle_t ho_handle)
	STATIC_ASSERT (sizeof(session_dgram_hdr_t)==(SESSION_CONN_ID_LEN+8), "session conn id wrong length")

Macro Definition Documentation

FIFO_EVENT_APP_RX

#define FIFO_EVENT_APP_RX   SESSION_IO_EVT_RX

Definition at line 393 of file session_types.h.

FIFO_EVENT_APP_TX

#define FIFO_EVENT_APP_TX   SESSION_IO_EVT_TX

Definition at line 394 of file session_types.h.

FIFO_EVENT_BUILTIN_RX

#define FIFO_EVENT_BUILTIN_RX   SESSION_IO_EVT_BUILTIN_RX

Definition at line 396 of file session_types.h.

FIFO_EVENT_BUILTIN_TX

#define FIFO_EVENT_BUILTIN_TX   SESSION_IO_EVT_BUILTIN_TX

Definition at line 397 of file session_types.h.

FIFO_EVENT_DISCONNECT

#define FIFO_EVENT_DISCONNECT   SESSION_CTRL_EVT_CLOSE

Definition at line 395 of file session_types.h.

foreach_session_ctrl_evt

#define foreach_session_ctrl_evt

Value:

  _ (LISTEN, listen)                                                          \
  _ (LISTEN_URI, listen_uri)                                                  \
  _ (BOUND, bound)                                                            \
  _ (UNLISTEN, unlisten)                                                      \
  _ (UNLISTEN_REPLY, unlisten_reply)                                          \
  _ (ACCEPTED, accepted)                                                      \
  _ (ACCEPTED_REPLY, accepted_reply)                                          \
  _ (CONNECT, connect)                                                        \
  _ (CONNECT_URI, connect_uri)                                                \
  _ (CONNECTED, connected)                                                    \
  _ (SHUTDOWN, shutdown)                                                      \
  _ (DISCONNECT, disconnect)                                                  \
  _ (DISCONNECTED, disconnected)                                              \
  _ (DISCONNECTED_REPLY, disconnected_reply)                                  \
  _ (RESET_REPLY, reset_reply)                                                \
  _ (REQ_WORKER_UPDATE, req_worker_update)                                    \
  _ (WORKER_UPDATE, worker_update)                                            \
  _ (WORKER_UPDATE_REPLY, worker_update_reply)                                \
  _ (APP_DETACH, app_detach)                                                  \
  _ (APP_ADD_SEGMENT, app_add_segment)                                        \
  _ (APP_DEL_SEGMENT, app_del_segment)                                        \
  _ (MIGRATED, migrated)                                                      \
  _ (CLEANUP, cleanup)                                                        \
  _ (APP_WRK_RPC, app_wrk_rpc)                                                \
  _ (TRANSPORT_ATTR, transport_attr)                                          \
  _ (TRANSPORT_ATTR_REPLY, transport_attr_reply)                              \
/* Deprecated and will be removed. Use types above */

Definition at line 365 of file session_types.h.

foreach_session_endpoint_fields

#define foreach_session_endpoint_fields

Value:

  foreach_transport_endpoint_cfg_fields                         \
  _(u8, transport_proto)                                        \

Definition at line 27 of file session_types.h.

foreach_session_error

#define foreach_session_error

Value:

  _ (NONE, "no error")                                                        \
  _ (UNKNOWN, "generic/unknown error")                                        \
  _ (REFUSED, "refused")                                                      \
  _ (TIMEDOUT, "timedout")                                                    \
  _ (ALLOC, "obj/memory allocation error")                                    \
  _ (OWNER, "object not owned by application")                                \
  _ (NOROUTE, "no route")                                                     \
  _ (NOINTF, "no resolving interface")                                        \
  _ (NOIP, "no ip for lcl interface")                                         \
  _ (NOPORT, "no lcl port")                                                   \
  _ (NOSUPPORT, "not supported")                                              \
  _ (NOLISTEN, "not listening")                                               \
  _ (NOSESSION, "session does not exist")                                     \
  _ (NOAPP, "app not attached")                                               \
  _ (PORTINUSE, "lcl port in use")                                            \
  _ (IPINUSE, "ip in use")                                                    \
  _ (ALREADY_LISTENING, "ip port pair already listened on")                   \
  _ (INVALID, "invalid value")                                                \
  _ (INVALID_RMT_IP, "invalid remote ip")                                     \
  _ (INVALID_APPWRK, "invalid app worker")                                    \
  _ (INVALID_NS, "invalid namespace")                                         \
  _ (SEG_NO_SPACE, "Couldn't allocate a fifo pair")                           \
  _ (SEG_NO_SPACE2, "Created segment, couldn't allocate a fifo pair")         \
  _ (SEG_CREATE, "Couldn't create a new segment")                             \
  _ (FILTERED, "session filtered")                                            \
  _ (SCOPE, "scope not supported")                                            \
  _ (BAPI_NO_FD, "bapi doesn't have a socket fd")                             \
  _ (BAPI_SEND_FD, "couldn't send fd over bapi socket fd")                    \
  _ (BAPI_NO_REG, "app bapi registration not found")                          \
  _ (MQ_MSG_ALLOC, "failed to alloc mq msg")                                  \
  _ (TLS_HANDSHAKE, "failed tls handshake")                                   \
  _ (EVENTFD_ALLOC, "failed to alloc eventfd")                                \
  _ (NOEXTCFG, "no extended transport config")                                \
  _ (NOCRYPTOENG, "no crypto engine")                                         \
  _ (NOCRYPTOCKP, "cert key pair not found ")                                 \
  _ (LOCAL_CONNECT, "could not connect with local scope")

Definition at line 454 of file session_types.h.

foreach_session_flag

#define foreach_session_flag

Value:

  _ (RX_EVT, "rx-event")                                                      \
  _ (PROXY, "proxy")                                                          \
  _ (CUSTOM_TX, "custom-tx")                                                  \
  _ (IS_MIGRATING, "migrating")                                               \
  _ (UNIDIRECTIONAL, "unidirectional")                                        \
  _ (CUSTOM_FIFO_TUNING, "custom-fifo-tuning")                                \
  _ (HALF_OPEN, "half-open")

Definition at line 151 of file session_types.h.

foreach_session_state

#define foreach_session_state

Value:

  _(CREATED, "created")                                 \
  _(LISTENING, "listening")                             \
  _(CONNECTING, "connecting")                           \
  _(ACCEPTING, "accepting")                             \
  _(READY, "ready")                                     \
  _(OPENED, "opened")                                   \
  _(TRANSPORT_CLOSING, "transport-closing")             \
  _(CLOSING, "closing")                                 \
  _(APP_CLOSED, "app-closed")                           \
  _(TRANSPORT_CLOSED, "transport-closed")               \
  _(CLOSED, "closed")                                   \
  _(TRANSPORT_DELETED, "transport-deleted")             \

Definition at line 129 of file session_types.h.

SESSION_CLI_ID_LEN

#define SESSION_CLI_ID_LEN   "60"

Definition at line 507 of file session_types.h.

SESSION_CLI_STATE_LEN

#define SESSION_CLI_STATE_LEN   "15"

Definition at line 508 of file session_types.h.

SESSION_CONN_HDR_LEN

#define SESSION_CONN_HDR_LEN   45

Definition at line 449 of file session_types.h.

SESSION_CONN_ID_LEN

#define SESSION_CONN_ID_LEN   37

Definition at line 448 of file session_types.h.

SESSION_CTRL_MSG_MAX_SIZE

#define SESSION_CTRL_MSG_MAX_SIZE   86

Definition at line 24 of file session_types.h.

SESSION_ENDPOINT_CFG_NULL

#define SESSION_ENDPOINT_CFG_NULL

Value:

  {                                                                           \
    .sw_if_index = ENDPOINT_INVALID_INDEX, .ip = SESSION_IP46_ZERO,           \
    .fib_index = ENDPOINT_INVALID_INDEX, .is_ip4 = 0, .port = 0,              \
    .peer = TRANSPORT_ENDPOINT_NULL, .transport_proto = 0,                    \
    .app_wrk_index = ENDPOINT_INVALID_INDEX,                                  \
    .opaque = ENDPOINT_INVALID_INDEX,                                         \
    .parent_handle = SESSION_INVALID_HANDLE, .ext_cfg = 0,                    \
  }

Definition at line 77 of file session_types.h.

SESSION_ENDPOINT_NULL

#define SESSION_ENDPOINT_NULL

Value:

{                                               \
  .sw_if_index = ENDPOINT_INVALID_INDEX,        \
  .ip = SESSION_IP46_ZERO,                      \
  .fib_index = ENDPOINT_INVALID_INDEX,          \
  .is_ip4 = 0,                                  \
  .port = 0,                                    \
  .peer = TRANSPORT_ENDPOINT_NULL,              \
  .transport_proto = 0,                         \
}

Definition at line 67 of file session_types.h.

session_endpoint_to_transport

#define session_endpoint_to_transport

(

_sep

)

((transport_endpoint_t *)_sep)

Definition at line 87 of file session_types.h.

session_endpoint_to_transport_cfg

#define session_endpoint_to_transport_cfg

(

_sep

)

((transport_endpoint_cfg_t *)_sep)

Definition at line 88 of file session_types.h.

SESSION_ERROR_NEW_SEG_NO_SPACE

#define SESSION_ERROR_NEW_SEG_NO_SPACE   SESSION_E_SEG_NO_SPACE2

Definition at line 513 of file session_types.h.

SESSION_ERROR_NO_SPACE

#define SESSION_ERROR_NO_SPACE   SESSION_E_SEG_NO_SPACE

Definition at line 512 of file session_types.h.

SESSION_ERROR_SEG_CREATE

#define SESSION_ERROR_SEG_CREATE   SESSION_E_SEG_CREATE

Definition at line 511 of file session_types.h.

SESSION_INVALID_HANDLE

#define SESSION_INVALID_HANDLE   ((u64)~0)

Definition at line 23 of file session_types.h.

SESSION_INVALID_INDEX

#define SESSION_INVALID_INDEX   ((u32)~0)

Definition at line 22 of file session_types.h.

SESSION_IP46_ZERO

#define SESSION_IP46_ZERO

Value:

{                                               \
    .ip6 = {                                    \
        { 0, 0, },                              \
    },                                          \
}

Definition at line 52 of file session_types.h.

SESSION_MSG_NULL

#define SESSION_MSG_NULL   { }

Definition at line 429 of file session_types.h.

SESSION_NODE_FRAME_SIZE

#define SESSION_NODE_FRAME_SIZE   128

Definition at line 25 of file session_types.h.

TRANSPORT_ENDPOINT_NULL

#define TRANSPORT_ENDPOINT_NULL

Value:

{                                               \
  .sw_if_index = ENDPOINT_INVALID_INDEX,        \
  .ip = SESSION_IP46_ZERO,                      \
  .fib_index = ENDPOINT_INVALID_INDEX,          \
  .is_ip4 = 0,                                  \
  .port = 0,                                    \
}

Definition at line 59 of file session_types.h.

Typedef Documentation

session_dgram_hdr_t

typedef struct session_dgram_header_ session_dgram_hdr_t

session_dgram_pre_hdr_t

typedef struct session_dgram_pre_hdr_ session_dgram_pre_hdr_t

session_endpoint_cfg_t

typedef struct _session_endpoint_cfg session_endpoint_cfg_t

session_endpoint_t

typedef struct _session_endpoint session_endpoint_t

session_error_p_t

typedef enum session_error_p_ session_error_p_t

session_error_t

typedef enum session_error_ session_error_t

session_flag_bits_t

typedef enum session_flags_bits_ session_flag_bits_t

session_flags_t

typedef enum session_flags_ session_flags_t

session_ft_action_t

typedef enum session_ft_action_ session_ft_action_t

session_handle_t

typedef u64 session_handle_t

Definition at line 111 of file session_types.h.

session_t

typedef struct session_ session_t

session_type_t

typedef u8 session_type_t

Definition at line 110 of file session_types.h.

Enumeration Type Documentation

session_cleanup_ntf_t

enum session_cleanup_ntf_t

Enumerator
SESSION_CLEANUP_TRANSPORT
SESSION_CLEANUP_SESSION

Definition at line 113 of file session_types.h.

session_error_

enum session_error_

Enumerator
foreach_session_error

Definition at line 500 of file session_types.h.

session_error_p_

enum session_error_p_

Enumerator
SESSION_N_ERRORS

Definition at line 492 of file session_types.h.

session_evt_type_t

enum session_evt_type_t

Enumerator
SESSION_IO_EVT_RX
SESSION_IO_EVT_TX
SESSION_IO_EVT_TX_FLUSH
SESSION_IO_EVT_BUILTIN_RX
SESSION_IO_EVT_BUILTIN_TX
SESSION_CTRL_EVT_RPC
SESSION_CTRL_EVT_HALF_CLOSE
SESSION_CTRL_EVT_CLOSE
SESSION_CTRL_EVT_RESET
SESSION_CTRL_EVT_BOUND
SESSION_CTRL_EVT_UNLISTEN_REPLY
SESSION_CTRL_EVT_ACCEPTED
SESSION_CTRL_EVT_ACCEPTED_REPLY
SESSION_CTRL_EVT_CONNECTED
SESSION_CTRL_EVT_DISCONNECTED
SESSION_CTRL_EVT_DISCONNECTED_REPLY
SESSION_CTRL_EVT_RESET_REPLY
SESSION_CTRL_EVT_REQ_WORKER_UPDATE
SESSION_CTRL_EVT_WORKER_UPDATE
SESSION_CTRL_EVT_WORKER_UPDATE_REPLY
SESSION_CTRL_EVT_SHUTDOWN
SESSION_CTRL_EVT_DISCONNECT
SESSION_CTRL_EVT_CONNECT
SESSION_CTRL_EVT_CONNECT_URI
SESSION_CTRL_EVT_LISTEN
SESSION_CTRL_EVT_LISTEN_URI
SESSION_CTRL_EVT_UNLISTEN
SESSION_CTRL_EVT_APP_DETACH
SESSION_CTRL_EVT_APP_ADD_SEGMENT
SESSION_CTRL_EVT_APP_DEL_SEGMENT
SESSION_CTRL_EVT_MIGRATED
SESSION_CTRL_EVT_CLEANUP
SESSION_CTRL_EVT_APP_WRK_RPC
SESSION_CTRL_EVT_TRANSPORT_ATTR
SESSION_CTRL_EVT_TRANSPORT_ATTR_REPLY

Definition at line 326 of file session_types.h.

session_flags_

enum session_flags_

Enumerator
foreach_session_flag

Definition at line 168 of file session_types.h.

session_flags_bits_

enum session_flags_bits_

Enumerator
SESSION_N_FLAGS

Definition at line 160 of file session_types.h.

session_ft_action_

enum session_ft_action_

Enumerator
SESSION_FT_ACTION_ENQUEUED
SESSION_FT_ACTION_DEQUEUED
SESSION_FT_ACTION_N_ACTIONS

Definition at line 119 of file session_types.h.

session_mq_rings_e

enum session_mq_rings_e

Enumerator
SESSION_MQ_IO_EVT_RING
SESSION_MQ_CTRL_EVT_RING
SESSION_MQ_N_RINGS

Definition at line 399 of file session_types.h.

session_state_t

enum session_state_t

Enumerator
SESSION_N_STATES

Definition at line 143 of file session_types.h.

Function Documentation

session_endpoint_fib_proto()

static u8 session_endpoint_fib_proto ( session_endpoint_t *  sep )

inlinestatic

Definition at line 92 of file session_types.h.

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session_endpoint_is_local()

static u8 session_endpoint_is_local ( session_endpoint_t *  sep )

inlinestatic

Definition at line 98 of file session_types.h.

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session_endpoint_is_zero()

static u8 session_endpoint_is_zero ( session_endpoint_t *  sep )

inlinestatic

Definition at line 105 of file session_types.h.

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session_get_fib_proto()

static fib_protocol_t session_get_fib_proto ( session_t *  s )

inlinestatic

Definition at line 248 of file session_types.h.

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session_get_transport_proto()

static transport_proto_t session_get_transport_proto ( session_t *  s )

inlinestatic

Definition at line 242 of file session_types.h.

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session_handle()

static session_handle_t session_handle ( session_t *  s )

inlinestatic

Definition at line 283 of file session_types.h.

session_handle_data()

static u32 session_handle_data ( session_handle_t  ho_handle )

inlinestatic

Definition at line 321 of file session_types.h.

session_handle_index()

static u32 session_handle_index ( session_handle_t  ho_handle )

inlinestatic

Definition at line 315 of file session_types.h.

session_has_transport()

static u8 session_has_transport ( session_t *  s )

inlinestatic

Definition at line 255 of file session_types.h.

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session_index_from_handle()

static u32 session_index_from_handle ( session_handle_t  handle )

inlinestatic

Definition at line 289 of file session_types.h.

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session_make_handle()

static session_handle_t session_make_handle ( u32  session_index, u32  data  )

inlinestatic

Definition at line 309 of file session_types.h.

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session_parse_handle()

static void session_parse_handle ( session_handle_t  handle, u32 *  index, u32 *  thread_index  )

inlinestatic

Definition at line 301 of file session_types.h.

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session_thread_from_handle()

static u32 session_thread_from_handle ( session_handle_t  handle )

inlinestatic

Definition at line 295 of file session_types.h.

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session_transport_service_type()

static transport_service_type_t session_transport_service_type ( session_t *  s )

inlinestatic

Definition at line 261 of file session_types.h.

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session_transport_tx_fn_type()

static transport_tx_fn_type_t session_transport_tx_fn_type ( session_t *  s )

inlinestatic

Definition at line 269 of file session_types.h.

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session_tx_is_dgram()

static u8 session_tx_is_dgram ( session_t *  s )

inlinestatic

Definition at line 277 of file session_types.h.

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session_type_from_proto_and_ip()

static session_type_t session_type_from_proto_and_ip ( transport_proto_t  proto, u8  is_ip4  )

inlinestatic

Definition at line 224 of file session_types.h.

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session_type_is_ip4()

static u8 session_type_is_ip4 ( session_type_t  st )

inlinestatic

Definition at line 236 of file session_types.h.

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session_type_transport_proto()

static transport_proto_t session_type_transport_proto ( session_type_t  st )

inlinestatic

Definition at line 230 of file session_types.h.

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STATIC_ASSERT()

STATIC_ASSERT	(	sizeof(session_dgram_hdr_t)	= =(SESSION_CONN_ID_LEN+8),
		"session conn id wrong length"
	)