Commit 6af35217 authored by Mike Perry's avatar Mike Perry
Browse files

Bug 23512: Test recording bytes in circ queues.

parent 2ceda207
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+9 −4
Original line number Diff line number Diff line
@@ -88,6 +88,11 @@
static void bw_arrays_init(void);
static void predicted_ports_init(void);

typedef struct bw_array_t bw_array_t;
STATIC uint64_t find_largest_max(bw_array_t *b);
STATIC void commit_max(bw_array_t *b);
STATIC void advance_obs(bw_array_t *b);

/** Total number of bytes currently allocated in fields used by rephist.c. */
uint64_t rephist_total_alloc=0;
/** Number of or_history_t objects currently allocated. */
@@ -1236,7 +1241,7 @@ typedef struct bw_array_t {
} bw_array_t;

/** Shift the current period of b forward by one. */
static void
STATIC void
commit_max(bw_array_t *b)
{
  /* Store total from current period. */
@@ -1256,7 +1261,7 @@ commit_max(bw_array_t *b)
}

/** Shift the current observation time of <b>b</b> forward by one second. */
static inline void
STATIC void
advance_obs(bw_array_t *b)
{
  int nextidx;
@@ -1331,7 +1336,7 @@ bw_array_free(bw_array_t *b)
/** Recent history of bandwidth observations for read operations. */
static bw_array_t *read_array = NULL;
/** Recent history of bandwidth observations for write operations. */
static bw_array_t *write_array = NULL;
STATIC bw_array_t *write_array = NULL;
/** Recent history of bandwidth observations for read operations for the
    directory protocol. */
static bw_array_t *dir_read_array = NULL;
@@ -1408,7 +1413,7 @@ rep_hist_note_dir_bytes_read(uint64_t num_bytes, time_t when)
 * most bandwidth used in any NUM_SECS_ROLLING_MEASURE period for the last
 * NUM_SECS_BW_SUM_IS_VALID seconds.)
 */
static uint64_t
STATIC uint64_t
find_largest_max(bw_array_t *b)
{
  int i;
+2 −0
Original line number Diff line number Diff line
@@ -117,6 +117,8 @@ extern uint32_t rephist_total_num;
#ifdef TOR_UNIT_TESTS
extern int onion_handshakes_requested[MAX_ONION_HANDSHAKE_TYPE+1];
extern int onion_handshakes_assigned[MAX_ONION_HANDSHAKE_TYPE+1];
typedef struct bw_array_t bw_array_t;
extern bw_array_t *write_array;
#endif

#endif
+107 −5
Original line number Diff line number Diff line
@@ -4,6 +4,9 @@
#include "or.h"
#define CIRCUITBUILD_PRIVATE
#include "circuitbuild.h"
#include "circuitlist.h"
#include "rephist.h"
#include "channeltls.h"
#define RELAY_PRIVATE
#include "relay.h"
/* For init/free stuff */
@@ -16,6 +19,9 @@
static or_circuit_t * new_fake_orcirc(channel_t *nchan, channel_t *pchan);

static void test_relay_append_cell_to_circuit_queue(void *arg);
uint64_t find_largest_max(bw_array_t *b);
void commit_max(bw_array_t *b);
void advance_obs(bw_array_t *b);

static or_circuit_t *
new_fake_orcirc(channel_t *nchan, channel_t *pchan)
@@ -27,10 +33,9 @@ new_fake_orcirc(channel_t *nchan, channel_t *pchan)
  circ = &(orcirc->base_);
  circ->magic = OR_CIRCUIT_MAGIC;

  circ->n_chan = nchan;
  circ->n_circ_id = get_unique_circ_id_by_chan(nchan);
  circ->n_mux = NULL; /* ?? */
  circuit_set_n_circid_chan(circ, get_unique_circ_id_by_chan(nchan), nchan);
  cell_queue_init(&(circ->n_chan_cells));

  circ->n_hop = NULL;
  circ->streams_blocked_on_n_chan = 0;
  circ->streams_blocked_on_p_chan = 0;
@@ -43,13 +48,108 @@ new_fake_orcirc(channel_t *nchan, channel_t *pchan)
  circ->deliver_window = CIRCWINDOW_START_MAX;
  circ->n_chan_create_cell = NULL;

  orcirc->p_chan = pchan;
  orcirc->p_circ_id = get_unique_circ_id_by_chan(pchan);
  /* for assert_circ_ok */
  orcirc->p_crypto = (void*)1;
  orcirc->n_crypto = (void*)1;
  orcirc->n_digest = (void*)1;
  orcirc->p_digest = (void*)1;

  circuit_set_p_circid_chan(orcirc, get_unique_circ_id_by_chan(pchan), pchan);
  cell_queue_init(&(orcirc->p_chan_cells));

  return orcirc;
}

static void
test_relay_close_circuit(void *arg)
{
  channel_t *nchan = NULL, *pchan = NULL;
  or_circuit_t *orcirc = NULL;
  cell_t *cell = NULL;
  int old_count, new_count;

  (void)arg;

  /* Make fake channels to be nchan and pchan for the circuit */
  nchan = new_fake_channel();
  tt_assert(nchan);

  pchan = new_fake_channel();
  tt_assert(pchan);

  /* We'll need chans with working cmuxes */
  nchan->cmux = circuitmux_alloc();
  pchan->cmux = circuitmux_alloc();

  /* Make a fake orcirc */
  orcirc = new_fake_orcirc(nchan, pchan);
  tt_assert(orcirc);
  circuitmux_attach_circuit(nchan->cmux, TO_CIRCUIT(orcirc),
                            CELL_DIRECTION_OUT);
  circuitmux_attach_circuit(pchan->cmux, TO_CIRCUIT(orcirc),
                            CELL_DIRECTION_IN);

  /* Make a cell */
  cell = tor_malloc_zero(sizeof(cell_t));
  make_fake_cell(cell);

  MOCK(scheduler_channel_has_waiting_cells,
       scheduler_channel_has_waiting_cells_mock);

  /* Append it */
  old_count = get_mock_scheduler_has_waiting_cells_count();
  append_cell_to_circuit_queue(TO_CIRCUIT(orcirc), nchan, cell,
                               CELL_DIRECTION_OUT, 0);
  new_count = get_mock_scheduler_has_waiting_cells_count();
  tt_int_op(new_count, OP_EQ, old_count + 1);

  /* Now try the reverse direction */
  old_count = get_mock_scheduler_has_waiting_cells_count();
  append_cell_to_circuit_queue(TO_CIRCUIT(orcirc), pchan, cell,
                               CELL_DIRECTION_IN, 0);
  new_count = get_mock_scheduler_has_waiting_cells_count();
  tt_int_op(new_count, OP_EQ, old_count + 1);

  /* Ensure our write totals are 0 */
  tt_int_op(find_largest_max(write_array), OP_EQ, 0);

  /* Mark the circuit for close */
  circuit_mark_for_close(TO_CIRCUIT(orcirc), 0);

  /* Check our write totals. */
  advance_obs(write_array);
  commit_max(write_array);
  /* Check for two cells plus overhead */
  tt_int_op(find_largest_max(write_array), OP_EQ,
                             2*(get_cell_network_size(nchan->wide_circ_ids)
                                +TLS_PER_CELL_OVERHEAD));

  UNMOCK(scheduler_channel_has_waiting_cells);

  /* Get rid of the fake channels */
  MOCK(scheduler_release_channel, scheduler_release_channel_mock);
  channel_mark_for_close(nchan);
  channel_mark_for_close(pchan);
  UNMOCK(scheduler_release_channel);

  /* Shut down channels */
  channel_free_all();

 done:
  tor_free(cell);
  if (orcirc) {
    circuitmux_detach_circuit(nchan->cmux, TO_CIRCUIT(orcirc));
    circuitmux_detach_circuit(pchan->cmux, TO_CIRCUIT(orcirc));
    cell_queue_clear(&orcirc->base_.n_chan_cells);
    cell_queue_clear(&orcirc->p_chan_cells);
  }
  tor_free(orcirc);
  free_fake_channel(nchan);
  free_fake_channel(pchan);

  return;
}

static void
test_relay_append_cell_to_circuit_queue(void *arg)
{
@@ -129,6 +229,8 @@ test_relay_append_cell_to_circuit_queue(void *arg)
struct testcase_t relay_tests[] = {
  { "append_cell_to_circuit_queue", test_relay_append_cell_to_circuit_queue,
    TT_FORK, NULL, NULL },
  { "close_circ_rephist", test_relay_close_circuit,
    TT_FORK, NULL, NULL },
  END_OF_TESTCASES
};