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43 Commits

Author SHA1 Message Date
Nick Mathewson
7106492571 scan-build: Be consistent with a needless check in circuitmux.c 
In circuitmux_detach_all_circuits, we check whether an HT iterator
gives us NULL.  That should be impossible for an HT iterator.  But
our checking it has confused scan-build (justly) into thinking that
our later use of HT_NEXT_RMV might not be kosher.  I'm taking the
coward's route here and strengthening the check.  Bugfix on
fd31dd44. (Not a real bug though)
 2014-04-18 20:35:59 -04:00
Nick Mathewson
1a74360c2d Test code for implementation of faster circuit_unlink_all_from_channel 
This contains the obvious implementation using the circuitmux data
structure.  It also runs the old (slow) algorithm and compares
the results of the two to make sure that they're the same.

Needs review and testing.
 2014-03-14 11:57:51 -04:00
Karsten Loesing
2e0fad542c Merge branch 'morestats4' into morestats5 
Conflicts:
	doc/tor.1.txt
	src/or/config.c
	src/or/connection.h
	src/or/control.c
	src/or/control.h
	src/or/or.h
	src/or/relay.c
	src/or/relay.h
	src/test/test.c
 2013-10-28 12:09:42 +01:00
Nick Mathewson
18845c5507 Initialize destroy_cell_queue. 
Likely fix for the crash bug of #9296, which was introduced through a
combination of #7912 and #8586.  Bugfix not in any released Tor.
 2013-07-19 09:49:35 -04:00
Nick Mathewson
1047e7dcb0 Use TOR_SIMPLEQ for packed_cell_t 2013-07-18 11:23:45 -04:00
Nick Mathewson
ec6c155f82 Add some basic unit tests for the circuit map data structure. 
These show off the new mocking code by mocking the circuitmux code
so that we can test the circuit map code in isolation.
 2013-07-10 15:26:34 -04:00
Nick Mathewson
0748c06f7c Fix bug 9082: avoid leak when freeing destroy cell queues 
In my #7912 fix, there wasn't any code to remove entries from the
(channel, circuit ID)->circuit map corresponding to queued but un-sent
DESTROYs.

Spotted by skruffy. Fixes bug 9082; bug not in any released Tor.
 2013-06-17 11:30:56 -04:00
Nick Mathewson
e61df2ec65 Fix compile warnings wrt printf formating of int64_t 2013-06-13 10:30:34 -04:00
Andrea Shepard
16f9861b22 Add destroy balance tracking and logging to circuitmux 2013-06-13 10:14:36 -04:00
Nick Mathewson
43d53e6d86 Implementation of a fix for bug 7912 
I added the code to pass a destroy cell to a queueing function rather
than writing it immediately, and the code to remember that we
shouldn't reuse the circuit id until the destroy is actually sent, and
the code to release the circuit id once the destroy has been sent...
and then I finished by hooking destroy_cell_queue into the rest of
Tor.
 2013-06-13 10:14:00 -04:00
Nick Mathewson
339df5df08 Fix 8447: use %u to format circid_t. 
Now that circid_t is 4 bytes long, the default integer promotions will
leave it alone when sizeof(int) == 4, which will leave us formatting an
unsigned as an int.  That's technically undefined behavior.

Fixes bug 8447 on bfffc1f0fc.  Bug not
in any released Tor.
 2013-03-10 19:52:06 -04:00
Nick Mathewson
4da083db3b Update the copyright date to 201. 2013-01-16 01:54:56 -05:00
Andrea Shepard
5543c5b202
Fix formatting in various places after 6465/6816 work 2012-10-10 00:48:36 -07:00
Andrea Shepard
bec776480d Don't remove circuitmux hash table entries in circuitmux_detach_circuit() until after circuitmux_make_circuit_inactive() 2012-10-10 00:44:47 -07:00
Andrea Shepard
1bc9a040f7 Fix 'warning: circuit was already inactive' and assert in circuitmux_make_circuit_inactive() during circuitmux_detach_all_circuits() 2012-10-10 00:44:47 -07:00
Andrea Shepard
c9e48ded5d Bring summary comment block in circuitmux.c up to date 2012-10-10 00:44:47 -07:00
Andrea Shepard
49d534e524 New and improved circuitmux_detach_all_circuits(), now without the stupid 2012-10-10 00:44:47 -07:00
Andrea Shepard
13972aee78 Fix broken circuitmux_move_active_circ_to_tail(); don't assume n_chan is not NULL in circuitmux_detach_circuit() 2012-10-10 00:44:46 -07:00
Andrea Shepard
903cc8acd1 Allow n_chan to be NULL in circuitmux_find_map_entry(); it can be but with non-NULL p_chan when extending a circuit 2012-10-10 00:44:46 -07:00
Andrea Shepard
a0200c1f6e Use circuit_get_by_circid_channel_even_if_marked() and fix some asserts in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
3d092ffbdd Handle closing circuits correctly with circuitmux_t 2012-10-10 00:44:46 -07:00
Andrea Shepard
6830c9c232 Add a bunch of paranoid-mode expensive asserts incircuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
7598e669e8 Adjust the circuitmux_t counter correctly in circuitmux_notify_xmit_cells() 2012-10-10 00:44:46 -07:00
Andrea Shepard
34591c61ef Implement circuitmux_assert_okay() and helper functions in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
4a14c6aa67 Implement circuitmux_get_first_active_circuit() in circuitmux.c; add pick_active_circuit() to circuitmux_policy_t in circuitmux.h 2012-10-10 00:44:46 -07:00
Andrea Shepard
c4e5e4727d Add comment for circuitmux_notify_xmit_cells() in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
741bc97b24 Add comment for circuitmux_move_active_circ_to_tail() in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
aff77eb1a9 Implement circuitmux_notify_xmit_cells() and circuitmux_move_active_circ_to_tail() helper in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
debef8f0cd Consistently allow policy alloc_cmux_data() and alloc_circ_data() functions to return NULL if the policy does not use this in circuitmux.c 2012-10-10 00:44:46 -07:00
Andrea Shepard
86d9d85dfc Implement circuitmux_clear_policy(), circuitmux_get_policy() and circuitmux_set_policy() in circuitmux.c 2012-10-10 00:44:45 -07:00
Andrea Shepard
eade7a37cd Add cmux policy notify_set_n_cells() and notify_xmit_cells() callbacks 2012-10-10 00:44:45 -07:00
Andrea Shepard
930e3d611a Allocate and free circuit-specific policy data in the right places 2012-10-10 00:44:45 -07:00
Andrea Shepard
851734d324 Implement circuitmux policy basic notifications mechanism 2012-10-10 00:44:45 -07:00
Andrea Shepard
38fa3b7e44 Implement circuitmux_make_circuit_inactive(), circuitmux_make_circuit_active() and linked list helper functions in circuitmux.c 2012-10-10 00:44:45 -07:00
Andrea Shepard
fd31dd440c Implement circuitmux_detach_all_circuits() in circuitmux.c 2012-10-10 00:43:18 -07:00
Andrea Shepard
9da04141e2 Implement circuitmux_is_circuit_active(), circuitmux_num_cells_for_circuit(), circuitmux_num_cells(), circuitmux_num_active_circuits() and circuitmux_num_circuits() in circuitmux.c 2012-10-10 00:43:18 -07:00
Andrea Shepard
a9deec3550 Implement circuitmux_clear_num_cells() and circuitmux_set_num_cells() in circuitmux.c, remove unneeded circuitmux_add_to_num_cells() from circuitmux.h 2012-10-10 00:43:18 -07:00
Andrea Shepard
8004448635 Handle n_mux/p_mux properly in circuitmux.c 2012-10-10 00:43:18 -07:00
Andrea Shepard
c3ebd0340c Implement circuitmux_detach_circuit() in circuitmux.c 2012-10-10 00:43:17 -07:00
Andrea Shepard
7e5c358d38 Implement circuitmux_attached_circuit_direction(), circuitmux_find_map_entry() and circuitmux_is_circuit_attached() in circuitmux.c 2012-10-10 00:41:55 -07:00
Andrea Shepard
3c41d7f414 Implement circuitmux_attach_circuit() in circuitmux.c 2012-10-10 00:41:49 -07:00
Andrea Shepard
e4a11b890e Implement circuitmux_alloc()/circuitmux_free() and chanid/circid->muxinfo hash table 2012-10-10 00:40:10 -07:00
Andrea Shepard
c684076fc7 Add circuitmux.c, circuitmux.h 2012-10-10 00:39:11 -07:00