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Diagnostic warning to see if it's pending destroys causing 11553

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This commit is contained in:
Nick Mathewson 2014-04-18 13:04:37 -04:00
parent bd169aa9a5
commit 47a0c10728
2 changed files with 24 additions and 6 deletions
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16
src/or/circuitbuild.c
View File

@ -88,7 +88,8 @@ static circid_t
get_unique_circ_id_by_chan(channel_t *chan)
{
#define MAX_CIRCID_ATTEMPTS 64
int in_use;
unsigned n_with_circ = 0, n_pending_destroy = 0;
circid_t test_circ_id;
circid_t attempts=0;
circid_t high_bit, max_range, mask;
@ -126,9 +127,12 @@ get_unique_circ_id_by_chan(channel_t *chan)
chan->warned_circ_ids_exhausted = 1;
log_warn(LD_CIRC,"No unused circIDs found on channel %s wide "
"circID support, with %u inbound and %u outbound circuits. "
"Found %u circuit IDs in use by circuits, and %u with "
"pending destroy cells."
"Failing a circuit.",
chan->wide_circ_ids ? "with" : "without",
chan->num_p_circuits, chan->num_n_circuits);
chan->num_p_circuits, chan->num_n_circuits,
n_with_circ, n_pending_destroy);
}
return 0;
}
@ -136,7 +140,13 @@ get_unique_circ_id_by_chan(channel_t *chan)
crypto_rand((char*) &test_circ_id, sizeof(test_circ_id));
test_circ_id &= mask;
test_circ_id |= high_bit;
} while (circuit_id_in_use_on_channel(test_circ_id, chan));
in_use = circuit_id_in_use_on_channel(test_circ_id, chan);
if (in_use == 1)
++n_with_circ;
else if (in_use == 2)
++n_pending_destroy;
} while (in_use);
return test_circ_id;
}

14
src/or/circuitlist.c
View File

@ -1065,13 +1065,21 @@ circuit_get_by_circid_channel_even_if_marked(circid_t circ_id,
}
/** Return true iff the circuit ID <b>circ_id</b> is currently used by a
* circuit, marked or not, on <b>chan</b>. */
* circuit, marked or not, on <b>chan</b>, or if the circ ID is reserved until
* a queued destroy cell can be sent.
*
* (Return 1 if the circuit is present, marked or not; Return 2
* if the circuit ID is pending a destroy.)
**/
int
circuit_id_in_use_on_channel(circid_t circ_id, channel_t *chan)
{
int found = 0;
return circuit_get_by_circid_channel_impl(circ_id, chan, &found) != NULL
|| found;
if (circuit_get_by_circid_channel_impl(circ_id, chan, &found) != NULL)
return 1;
if (found)
return 2;
return 0;
}
/** Return the circuit that a given edge connection is using. */