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Use circuit_get_by_circid_channel_even_if_marked() and fix some asserts in circuitmux.c

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This commit is contained in:
Andrea Shepard 2012-10-01 14:25:52 -07:00
parent 1498a6e84a
commit a0200c1f6e
1 changed files with 53 additions and 60 deletions
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113
src/or/circuitmux.c
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@ -130,8 +130,6 @@ struct chanid_circid_muxinfo_t {
* Internal-use #defines
*/
#define CMUX_PARANOIA
#ifdef CMUX_PARANOIA
#define circuitmux_assert_okay_paranoid(cmux) \
circuitmux_assert_okay(cmux)
@ -341,7 +339,11 @@ circuitmux_detach_all_circuits(circuitmux_t *cmux)
circuit_t *circ = NULL;
tor_assert(cmux);
circuitmux_assert_okay_paranoid(cmux);
/*
* Don't circuitmux_assert_okay_paranoid() here; this gets called when
* channels are being freed and have already been unregistered, so
* the channel ID lookups it does will fail.
*/
i = HT_START(chanid_circid_muxinfo_map, cmux->chanid_circid_map);
while (i) {
@ -351,7 +353,9 @@ circuitmux_detach_all_circuits(circuitmux_t *cmux)
/* Find a channel and circuit */
chan = channel_find_by_global_id(to_remove->chan_id);
if (chan) {
circ = circuit_get_by_circid_channel(to_remove->circ_id, chan);
circ =
circuit_get_by_circid_channel_even_if_marked(to_remove->circ_id,
chan);
if (circ) {
/* Clear the circuit's mux for this direction */
if (to_remove->muxinfo.direction == CELL_DIRECTION_OUT) {
@ -552,7 +556,7 @@ circuitmux_set_policy(circuitmux_t *cmux,
tor_assert(chan);
/* Get the circuit */
circ = circuit_get_by_circid_channel((*i)->circ_id, chan);
circ = circuit_get_by_circid_channel_even_if_marked((*i)->circ_id, chan);
tor_assert(circ);
/* Need to tell old policy it becomes inactive (i.e., it is active) ? */
@ -1477,64 +1481,53 @@ circuitmux_assert_okay_pass_one(circuitmux_t *cmux)
/* Find the channel and circuit, assert that they exist */
chan = channel_find_by_global_id(chan_id);
tor_assert(chan);
circ = circuit_get_by_circid_channel(circ_id, chan);
if (circ) {
/* Clear the circ_is_active bit to start */
circ_is_active = 0;
circ = circuit_get_by_circid_channel_even_if_marked(circ_id, chan);
tor_assert(circ);
/* Clear the circ_is_active bit to start */
circ_is_active = 0;
/* Assert that we know which direction this is going */
tor_assert((*i)->muxinfo.direction == CELL_DIRECTION_OUT ||
(*i)->muxinfo.direction == CELL_DIRECTION_IN);
/* Assert that we know which direction this is going */
tor_assert((*i)->muxinfo.direction == CELL_DIRECTION_OUT ||
(*i)->muxinfo.direction == CELL_DIRECTION_IN);
if ((*i)->muxinfo.direction == CELL_DIRECTION_OUT) {
/* We should be n_mux on this circuit */
tor_assert(cmux == circ->n_mux);
tor_assert(chan == circ->n_chan);
/* Get next and prev for next test */
next_p = &(circ->next_active_on_n_chan);
prev_p = &(circ->prev_active_on_n_chan);
} else {
/* This should be an or_circuit_t and we should be p_mux */
or_circ = TO_OR_CIRCUIT(circ);
tor_assert(cmux == or_circ->p_mux);
tor_assert(chan == or_circ->p_chan);
/* Get next and prev for next test */
next_p = &(or_circ->next_active_on_p_chan);
prev_p = &(or_circ->prev_active_on_p_chan);
}
/*
* Should this circuit be active? I.e., does the mux know about > 0
* cells on it?
*/
circ_is_active = ((*i)->muxinfo.cell_count > 0);
/* It should be in the linked list iff it's active */
if (circ_is_active) {
/* Either we have a next link or we are the tail */
tor_assert(*next_p || (circ == cmux->active_circuits_tail));
/* Either we have a prev link or we are the head */
tor_assert(*prev_p || (circ == cmux->active_circuits_head));
/* Increment the active circuits counter */
++n_active_circuits;
} else {
/* Shouldn't be in list, so no next or prev link */
tor_assert(!(*next_p));
tor_assert(!(*prev_p));
/* And can't be head or tail */
tor_assert(circ != cmux->active_circuits_head);
tor_assert(circ != cmux->active_circuits_tail);
}
if ((*i)->muxinfo.direction == CELL_DIRECTION_OUT) {
/* We should be n_mux on this circuit */
tor_assert(cmux == circ->n_mux);
tor_assert(chan == circ->n_chan);
/* Get next and prev for next test */
next_p = &(circ->next_active_on_n_chan);
prev_p = &(circ->prev_active_on_n_chan);
} else {
/*
* circuit_get_by_circid_channel() doesn't want us to have a circuit
* that's marked for close, but we can test for that case with
* circuit_id_in_use_on_channel(). Assert if it really, really isn't
* there.
*/
tor_assert(circuit_id_in_use_on_channel(circ_id, chan));
/* It definitely isn't active */
circ_is_active = 0;
/* This should be an or_circuit_t and we should be p_mux */
or_circ = TO_OR_CIRCUIT(circ);
tor_assert(cmux == or_circ->p_mux);
tor_assert(chan == or_circ->p_chan);
/* Get next and prev for next test */
next_p = &(or_circ->next_active_on_p_chan);
prev_p = &(or_circ->prev_active_on_p_chan);
}
/*
* Should this circuit be active? I.e., does the mux know about > 0
* cells on it?
*/
circ_is_active = ((*i)->muxinfo.cell_count > 0);
/* It should be in the linked list iff it's active */
if (circ_is_active) {
/* Either we have a next link or we are the tail */
tor_assert(*next_p || (circ == cmux->active_circuits_tail));
/* Either we have a prev link or we are the head */
tor_assert(*prev_p || (circ == cmux->active_circuits_head));
/* Increment the active circuits counter */
++n_active_circuits;
} else {
/* Shouldn't be in list, so no next or prev link */
tor_assert(!(*next_p));
tor_assert(!(*prev_p));
/* And can't be head or tail */
tor_assert(circ != cmux->active_circuits_head);
tor_assert(circ != cmux->active_circuits_tail);
}
/* Increment the circuits counter */