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Maintain a list of all the origin circuits.

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We'll want this for upgrading waiting circuits.
This commit is contained in:
Nick Mathewson 2016-11-22 09:05:52 -05:00
parent 8e43398986
commit de617a4714
2 changed files with 43 additions and 0 deletions
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39
src/or/circuitlist.c
View File

@ -85,6 +85,10 @@
/** A global list of all circuits at this hop. */
static smartlist_t *global_circuitlist = NULL;
/** A global list of all origin circuits. Every element of this is also
* an element of global_circuitlist. */
static smartlist_t *global_origin_circuit_list = NULL;
/** A list of all the circuits in CIRCUIT_STATE_CHAN_WAIT. */
static smartlist_t *circuits_pending_chans = NULL;
@ -523,6 +527,19 @@ circuit_close_all_marked(void)
}
circ->global_circuitlist_idx = -1;
/* Remove it from the origin circuit list, if appropriate. */
if (CIRCUIT_IS_ORIGIN(circ)) {
origin_circuit_t *origin_circ = TO_ORIGIN_CIRCUIT(circ);
int origin_idx = origin_circ->global_origin_circuit_list_idx;
smartlist_del(global_origin_circuit_list, origin_idx);
if (origin_idx < smartlist_len(global_origin_circuit_list)) {
origin_circuit_t *replacement =
smartlist_get(global_origin_circuit_list, origin_idx);
replacement->global_origin_circuit_list_idx = origin_idx;
}
origin_circ->global_origin_circuit_list_idx = -1;
}
circuit_about_to_free(circ);
circuit_free(circ);
} SMARTLIST_FOREACH_END(circ);
@ -780,6 +797,13 @@ origin_circuit_new(void)
init_circuit_base(TO_CIRCUIT(circ));
/* Add to origin-list. */
if (!global_origin_circuit_list)
global_origin_circuit_list = smartlist_new();
smartlist_add(global_origin_circuit_list, circ);
circ->global_origin_circuit_list_idx =
smartlist_len(global_origin_circuit_list) - 1;
circuit_build_times_update_last_circ(get_circuit_build_times_mutable());
return circ;
@ -837,6 +861,18 @@ circuit_free(circuit_t *circ)
mem = ocirc;
memlen = sizeof(origin_circuit_t);
tor_assert(circ->magic == ORIGIN_CIRCUIT_MAGIC);
if (ocirc->global_origin_circuit_list_idx != -1) {
int idx = ocirc->global_origin_circuit_list_idx;
origin_circuit_t *c2 = smartlist_get(global_origin_circuit_list, idx);
tor_assert(c2 == ocirc);
smartlist_del(global_origin_circuit_list, idx);
if (idx < smartlist_len(global_origin_circuit_list)) {
c2 = smartlist_get(global_origin_circuit_list, idx);
c2->global_origin_circuit_list_idx = idx;
}
}
if (ocirc->build_state) {
extend_info_free(ocirc->build_state->chosen_exit);
circuit_free_cpath_node(ocirc->build_state->pending_final_cpath);
@ -977,6 +1013,9 @@ circuit_free_all(void)
smartlist_free(lst);
global_circuitlist = NULL;
smartlist_free(global_origin_circuit_list);
global_origin_circuit_list = NULL;
smartlist_free(circuits_pending_chans);
circuits_pending_chans = NULL;

4
src/or/or.h
View File

@ -3157,6 +3157,10 @@ typedef struct origin_circuit_t {
* whether this circuit can be used. */
struct circuit_guard_state_t *guard_state;
/** Index into global_origin_circuit_list for this circuit. -1 if not
* present. */
int global_origin_circuit_list_idx;
/** How many more relay_early cells can we send on this circuit, according
* to the specification? */
unsigned int remaining_relay_early_cells : 4;