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Data Structures | Macros | Functions | Variables
occ.h File Reference
#include "forward.h"
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Data Structures

struct  mtu_load_test
 

Macros

#define OCC_STRING_SIZE   16
 
#define OCC_REQUEST   0 /* request options string from peer */
 
#define OCC_REPLY   1 /* deliver options string to peer */
 
#define OCC_INTERVAL_SECONDS   10
 
#define OCC_N_TRIES   12
 
#define OCC_MTU_LOAD_REQUEST   2 /* Ask peer to send a big packet to us */
 
#define OCC_MTU_LOAD   3 /* Send a big packet to peer */
 
#define OCC_MTU_REQUEST
 
#define OCC_MTU_REPLY   5 /* Send largest packet size to peer */
 
#define OCC_MTU_LOAD_INTERVAL_SECONDS   3
 
#define OCC_EXIT   6
 

Functions

static bool is_occ_msg (const struct buffer *buf)
 
void process_received_occ_msg (struct context *c)
 
void check_send_occ_req_dowork (struct context *c)
 
void check_send_occ_load_test_dowork (struct context *c)
 
void check_send_occ_msg_dowork (struct context *c)
 
static int occ_reset_op (void)
 
static void check_send_occ_req (struct context *c)
 
static void check_send_occ_load_test (struct context *c)
 
static void check_send_occ_msg (struct context *c)
 

Variables

const uint8_t occ_magic []
 

Macro Definition Documentation

◆ OCC_EXIT

#define OCC_EXIT   6

Definition at line 67 of file occ.h.

Referenced by check_send_occ_msg_dowork(), process_explicit_exit_notification_timer_wakeup(), and process_received_occ_msg().

◆ OCC_INTERVAL_SECONDS

#define OCC_INTERVAL_SECONDS   10

Definition at line 46 of file occ.h.

Referenced by do_init_timers().

◆ OCC_MTU_LOAD

#define OCC_MTU_LOAD   3 /* Send a big packet to peer */

Definition at line 53 of file occ.h.

Referenced by check_send_occ_msg_dowork(), and process_received_occ_msg().

◆ OCC_MTU_LOAD_INTERVAL_SECONDS

#define OCC_MTU_LOAD_INTERVAL_SECONDS   3

Definition at line 62 of file occ.h.

Referenced by do_init_timers().

◆ OCC_MTU_LOAD_REQUEST

#define OCC_MTU_LOAD_REQUEST   2 /* Ask peer to send a big packet to us */

Definition at line 52 of file occ.h.

Referenced by check_send_occ_msg_dowork(), and process_received_occ_msg().

◆ OCC_MTU_REPLY

#define OCC_MTU_REPLY   5 /* Send largest packet size to peer */

Definition at line 56 of file occ.h.

Referenced by check_send_occ_msg_dowork(), and process_received_occ_msg().

◆ OCC_MTU_REQUEST

#define OCC_MTU_REQUEST
Value:
4 /* Ask peer to tell us the largest
* packet it has received from us so far */

Definition at line 54 of file occ.h.

Referenced by check_send_occ_msg_dowork(), and process_received_occ_msg().

◆ OCC_N_TRIES

#define OCC_N_TRIES   12

Definition at line 47 of file occ.h.

Referenced by check_send_occ_req_dowork().

◆ OCC_REPLY

#define OCC_REPLY   1 /* deliver options string to peer */

Definition at line 37 of file occ.h.

Referenced by check_send_occ_msg_dowork(), and process_received_occ_msg().

◆ OCC_REQUEST

#define OCC_REQUEST   0 /* request options string from peer */

Definition at line 36 of file occ.h.

Referenced by check_send_occ_msg_dowork(), check_send_occ_req_dowork(), and process_received_occ_msg().

◆ OCC_STRING_SIZE

#define OCC_STRING_SIZE   16

Definition at line 30 of file occ.h.

Referenced by check_send_occ_msg_dowork(), is_occ_msg(), and process_received_occ_msg().

Function Documentation

◆ check_send_occ_load_test()

static void check_send_occ_load_test ( struct context *  c)
inlinestatic

Definition at line 126 of file occ.h.

References context::c2, check_send_occ_load_test_dowork(), ETT_DEFAULT, event_timeout_defined(), event_timeout_trigger(), context_2::occ_mtu_load_test_interval, context_2::occ_op, context_2::timeval, and TO_LINK_DEF.

Referenced by process_coarse_timers().

◆ check_send_occ_load_test_dowork()

void check_send_occ_load_test_dowork ( struct context *  c)

Definition at line 186 of file occ.c.

References context::c2, connection_established(), mtu_load_test::delta, event_timeout_clear(), EXPANDED_SIZE, context_2::frame, M_INFO, msg, context_2::occ_mtu_load_n_tries, context_2::occ_mtu_load_size, context_2::occ_mtu_load_test_interval, context_2::occ_op, mtu_load_test::op, and PACKAGE_NAME.

Referenced by check_send_occ_load_test(), and is_occ_msg().

◆ check_send_occ_msg()

static void check_send_occ_msg ( struct context *  c)
inlinestatic

Definition at line 141 of file occ.h.

References context::c2, check_send_occ_msg_dowork(), context_2::occ_op, context_2::timeval, TO_LINK_DEF, and tv_clear().

Referenced by pre_select().

◆ check_send_occ_msg_dowork()

void check_send_occ_msg_dowork ( struct context *  c)

Definition at line 216 of file occ.c.

References ASSERT, context_buffers::aux_buf, BLEN, context_2::buf, buf_init, buf_safe(), buf_write(), buf_write_u16(), buf_write_u8(), context_2::buffers, context::c2, D_PACKET_CONTENT, dmsg, encrypt_sign(), EXPANDED_SIZE, EXTRA_FRAME, context_2::frame, FRAME_HEADROOM, get_random(), context_2::max_recv_size_local, MAX_RW_SIZE_TUN, context_2::max_send_size_local, min_int(), OCC_EXIT, occ_magic, OCC_MTU_LOAD, OCC_MTU_LOAD_REQUEST, context_2::occ_mtu_load_size, OCC_MTU_REPLY, OCC_MTU_REQUEST, context_2::occ_op, OCC_REPLY, OCC_REQUEST, OCC_STRING_SIZE, and context_2::options_string_local.

Referenced by check_send_occ_msg(), and is_occ_msg().

◆ check_send_occ_req()

static void check_send_occ_req ( struct context *  c)
inlinestatic

Definition at line 111 of file occ.h.

References context::c2, check_send_occ_req_dowork(), ETT_DEFAULT, event_timeout_defined(), event_timeout_trigger(), context_2::occ_interval, context_2::occ_op, context_2::timeval, and TO_LINK_DEF.

Referenced by process_coarse_timers().

◆ check_send_occ_req_dowork()

void check_send_occ_req_dowork ( struct context *  c)

Definition at line 149 of file occ.c.

References context::c2, options::ce, counter_format, D_SHOW_OCC, event_timeout_clear(), event_timeout_reset(), context_2::link_read_bytes, context_2::link_read_bytes_auth, msg, context_2::occ_interval, OCC_N_TRIES, context_2::occ_n_tries, context_2::occ_op, OCC_REQUEST, context::options, PACKAGE_NAME, and connection_entry::remote.

Referenced by check_send_occ_req(), and is_occ_msg().

◆ is_occ_msg()

static bool is_occ_msg ( const struct buffer *  buf)
inlinestatic

Definition at line 84 of file occ.h.

References buf_string_match_head(), check_send_occ_load_test_dowork(), check_send_occ_msg_dowork(), check_send_occ_req_dowork(), occ_magic, OCC_STRING_SIZE, and process_received_occ_msg().

Referenced by process_incoming_link_part2().

◆ occ_reset_op()

static int occ_reset_op ( void  )
inlinestatic

Definition at line 102 of file occ.h.

Referenced by init_instance().

◆ process_received_occ_msg()

void process_received_occ_msg ( struct context *  c)

Definition at line 351 of file occ.c.

References ASSERT, BPTR, context_2::buf, buf_advance(), buf_read_u16(), buf_read_u8(), context::c2, options::ce, D_PACKET_CONTENT, dmsg, event_timeout_clear(), connection_entry::fragment, buffer::len, M_INFO, context_2::max_recv_size_local, context_2::max_recv_size_remote, context_2::max_send_size_local, context_2::max_send_size_remote, msg, options::mtu_test, options::occ, OCC_EXIT, context_2::occ_interval, OCC_MTU_LOAD, OCC_MTU_LOAD_REQUEST, context_2::occ_mtu_load_size, context_2::occ_mtu_load_test_interval, OCC_MTU_REPLY, OCC_MTU_REQUEST, context_2::occ_op, OCC_REPLY, OCC_REQUEST, OCC_STRING_SIZE, context::options, options_cmp_equal_safe(), context_2::options_string_remote, options_warning_safe(), connection_entry::proto, proto_is_dgram(), context::sig, signal_info::signal_received, signal_info::signal_text, SIGTERM, TLS_MODE, and TUN_MTU_MIN.

Referenced by is_occ_msg(), and process_incoming_link_part2().

Variable Documentation

◆ occ_magic

const uint8_t occ_magic[]

Definition at line 57 of file occ.c.

Referenced by check_send_occ_msg_dowork(), and is_occ_msg().

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