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@@ -25,7 +25,9 @@ extern uint64_t estimated_total_queue_size;
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static int test_chan_accept_cells = 0;
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static int test_chan_fixed_cells_recved = 0;
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+static cell_t * test_chan_last_seen_fixed_cell_ptr = NULL;
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static int test_chan_var_cells_recved = 0;
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+static var_cell_t * test_chan_last_seen_var_cell_ptr = NULL;
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static int test_cells_written = 0;
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static int test_destroy_not_pending_calls = 0;
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static int test_doesnt_want_writes_count = 0;
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@@ -70,6 +72,7 @@ static void test_channel_flushmux(void *arg);
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static void test_channel_incoming(void *arg);
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static void test_channel_lifecycle(void *arg);
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static void test_channel_multi(void *arg);
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+static void test_channel_queue_incoming(void *arg);
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static void test_channel_queue_size(void *arg);
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static void test_channel_write(void *arg);
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@@ -179,7 +182,7 @@ chan_test_cell_handler(channel_t *ch,
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tt_assert(ch);
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tt_assert(cell);
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- tor_free(cell);
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+ test_chan_last_seen_fixed_cell_ptr = cell;
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++test_chan_fixed_cells_recved;
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done:
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@@ -214,7 +217,7 @@ chan_test_var_cell_handler(channel_t *ch,
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tt_assert(ch);
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tt_assert(var_cell);
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- tor_free(var_cell);
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+ test_chan_last_seen_var_cell_ptr = var_cell;
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++test_chan_var_cells_recved;
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done:
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@@ -608,7 +611,7 @@ test_channel_dumpstats(void *arg)
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make_fake_cell(cell);
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old_count = test_chan_fixed_cells_recved;
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channel_queue_cell(ch, cell);
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- cell = NULL;
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+ tor_free(cell);
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tt_int_op(test_chan_fixed_cells_recved, ==, old_count + 1);
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tt_assert(ch->n_bytes_recved > 0);
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tt_assert(ch->n_cells_recved > 0);
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@@ -819,7 +822,7 @@ test_channel_incoming(void *arg)
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make_fake_cell(cell);
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old_count = test_chan_fixed_cells_recved;
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channel_queue_cell(ch, cell);
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- cell = NULL;
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+ tor_free(cell);
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tt_int_op(test_chan_fixed_cells_recved, ==, old_count + 1);
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/* Receive a variable-size cell */
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@@ -827,7 +830,7 @@ test_channel_incoming(void *arg)
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make_fake_var_cell(var_cell);
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old_count = test_chan_var_cells_recved;
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channel_queue_var_cell(ch, var_cell);
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- var_cell = NULL;
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+ tor_free(cell);
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tt_int_op(test_chan_var_cells_recved, ==, old_count + 1);
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/* Close it */
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@@ -1422,6 +1425,113 @@ test_channel_queue_impossible(void *arg)
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return;
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}
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+static void
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+test_channel_queue_incoming(void *arg)
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+{
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+ channel_t *ch = NULL;
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+ cell_t *cell = NULL;
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+ var_cell_t *var_cell = NULL;
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+ int old_fixed_count, old_var_count;
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+
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+ (void)arg;
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+
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+ /* Mock these for duration of the test */
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+ MOCK(scheduler_channel_doesnt_want_writes,
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+ scheduler_channel_doesnt_want_writes_mock);
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+ MOCK(scheduler_release_channel,
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+ scheduler_release_channel_mock);
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+
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+ /* Accept cells to lower layer */
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+ test_chan_accept_cells = 1;
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+ /* Use default overhead factor */
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+ test_overhead_estimate = 1.0f;
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+
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+ ch = new_fake_channel();
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+ tt_assert(ch);
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+ /* Start it off in OPENING */
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+ ch->state = CHANNEL_STATE_OPENING;
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+ /* We'll need a cmux */
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+ ch->cmux = circuitmux_alloc();
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+
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+ /* Test cell handler getters */
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+ tt_ptr_op(channel_get_cell_handler(ch), ==, NULL);
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+ tt_ptr_op(channel_get_var_cell_handler(ch), ==, NULL);
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+
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+ /* Try to register it */
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+ channel_register(ch);
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+ tt_assert(ch->registered);
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+
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+ /* Open it */
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+ channel_change_state(ch, CHANNEL_STATE_OPEN);
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+ tt_int_op(ch->state, ==, CHANNEL_STATE_OPEN);
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+
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+ /* Assert that the incoming queue is empty */
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+ tt_assert(TOR_SIMPLEQ_EMPTY(&(ch->incoming_queue)));
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+
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+ /* Queue an incoming fixed-length cell */
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+ cell = tor_malloc_zero(sizeof(cell_t));
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+ make_fake_cell(cell);
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+ channel_queue_cell(ch, cell);
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+
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+ /* Assert that the incoming queue has one entry */
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+ tt_int_op(chan_cell_queue_len(&(ch->incoming_queue)), ==, 1);
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+
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+ /* Queue an incoming var cell */
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+ var_cell = tor_malloc_zero(sizeof(var_cell_t) + CELL_PAYLOAD_SIZE);
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+ make_fake_var_cell(var_cell);
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+ channel_queue_var_cell(ch, var_cell);
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+
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+ /* Assert that the incoming queue has two entries */
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+ tt_int_op(chan_cell_queue_len(&(ch->incoming_queue)), ==, 2);
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+
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+ /*
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+ * Install cell handlers; this will drain the queue, so save the old
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+ * cell counters first
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+ */
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+ old_fixed_count = test_chan_fixed_cells_recved;
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+ old_var_count = test_chan_var_cells_recved;
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+ channel_set_cell_handlers(ch,
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+ chan_test_cell_handler,
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+ chan_test_var_cell_handler);
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+ tt_ptr_op(channel_get_cell_handler(ch), ==, chan_test_cell_handler);
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+ tt_ptr_op(channel_get_var_cell_handler(ch), ==, chan_test_var_cell_handler);
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+
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+ /* Assert cells were received */
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+ tt_int_op(test_chan_fixed_cells_recved, ==, old_fixed_count + 1);
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+ tt_int_op(test_chan_var_cells_recved, ==, old_var_count + 1);
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+
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+ /*
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+ * Assert that the pointers are different from the cells we allocated;
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+ * when queueing cells with no incoming cell handlers installed, the
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+ * channel layer should copy them to a new buffer, and free them after
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+ * delivery. These pointers will have already been freed by the time
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+ * we get here, so don't dereference them.
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+ */
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+ tt_ptr_op(test_chan_last_seen_fixed_cell_ptr, !=, cell);
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+ tt_ptr_op(test_chan_last_seen_var_cell_ptr, !=, var_cell);
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+
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+ /* Assert queue is now empty */
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+ tt_assert(TOR_SIMPLEQ_EMPTY(&(ch->incoming_queue)));
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+
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+ /* Close it; this contains an assertion that the incoming queue is empty */
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+ channel_mark_for_close(ch);
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+ tt_int_op(ch->state, ==, CHANNEL_STATE_CLOSING);
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+ chan_test_finish_close(ch);
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+ tt_int_op(ch->state, ==, CHANNEL_STATE_CLOSED);
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+ channel_run_cleanup();
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+ ch = NULL;
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+
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+ done:
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+ free_fake_channel(ch);
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+ tor_free(cell);
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+ tor_free(var_cell);
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+
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+ UNMOCK(scheduler_channel_doesnt_want_writes);
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+ UNMOCK(scheduler_release_channel);
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+
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+ return;
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+}
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+
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static void
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test_channel_queue_size(void *arg)
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{
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@@ -1666,6 +1776,7 @@ struct testcase_t channel_tests[] = {
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{ "lifecycle_2", test_channel_lifecycle_2, TT_FORK, NULL, NULL },
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{ "multi", test_channel_multi, TT_FORK, NULL, NULL },
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{ "queue_impossible", test_channel_queue_impossible, TT_FORK, NULL, NULL },
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+ { "queue_incoming", test_channel_queue_incoming, TT_FORK, NULL, NULL },
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{ "queue_size", test_channel_queue_size, TT_FORK, NULL, NULL },
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{ "write", test_channel_write, TT_FORK, NULL, NULL },
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END_OF_TESTCASES
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