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40 commits

Author SHA1 Message Date
Quanah Gibson-Mount
788e9592ba Happy New Year! 2022-01-07 18:40:00 +00:00
Ondřej Kuzník
6cc6ec2f72 ITS#9600 Do not hold locks while calling into back-monitor 2021-10-05 11:05:25 +01:00
Ondřej Kuzník
4588f4e528 ITS#9597 Fix NoD support 2021-08-13 16:01:13 +01:00
Ondřej Kuzník
b66a62799d ITS#9597 Send Notice of Disconnection when shutting down a client connection 2021-08-13 10:57:13 +01:00
Ondřej Kuzník
a186fd70ab ITS#8747 Do not continue reading if connection is dying 2021-05-10 18:49:13 +00:00
Ondřej Kuzník
4f4997551d ITS#8747 Avoid epoch recursion in connection_write_cb 2021-05-10 18:49:13 +00:00
Ondřej Kuzník
e36d1e31c5 ITS#9001 manual changes 2021-03-30 15:46:40 +01:00
Quanah Gibson-Mount
efaf9a4a17 Happy New Year! 2021-01-11 19:25:53 +00:00
Ondřej Kuzník
1f6d8611a3 Implement read throttling when writes backlog 
Reject operations in such a case with LDAP_BUSY. If read_event feature
is on, just stop reading from the connection. However this could still
result in deadlocks in reasonable situations. Need to figure out better
ways to make it safe and still protect ourselves.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
68b163fca9 Introduce mutex checks 
Switched off unless thread debugging is on, but still useful for static
analysis.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
62a806b243 Thread error checking 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
1328777a85 Fix a SASL channel-binding leak 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
58d66a3946 Fix race between unlinking a client and processing incoming data 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b2e57148fa Shorten to one epoch per PDU 
A full read cycle can take a very long time if the limits are set too
high.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
dc1961cb15 Epoch based memory reclamation 
Similar to the algorithm presented in
https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-579.pdf

Not completely lock-free at the moment. Also the problems with epoch
based memory reclamation are still present - a thread actively observing
an epoch getting stuck will prevent LloadConnections and LloadOperations
being freed, potentially running out of memory.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
4b3d21146b Introduce SASL support for upstream connections 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
b4f43ed8e1 Refactor backend reset 
Reuse the connection walking facility in timeout management.
 2020-11-17 17:58:15 +00:00
Ondřej Kuzník
a7f8f58a63 expose task functions for invalidation 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
7f22bac4ac Introduce a new connection status - gentle shutdown 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
5c1245de06 Manage c_sasl_bind_mech on upstream 2020-11-17 17:58:14 +00:00
Nadezhda Ivanova
8bc7650a7c Clean ups and renames to coexist with slapd 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
0cfd4fca4d Make timeouts common and redo connection read timeouts 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
a0cd41ecd2 Upstream TLS support 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
063981a06d Respond to timeout events properly 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
ccf75c96c4 Update write timeout to timeval 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
b801ca17cb Rename macros and symbols to lloadd 2020-11-17 17:58:14 +00:00
Ondřej Kuzník
8d93e0baa0 Unify connection locking and I/O 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
1740f36bfc Fix emfile handling 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
30e538e836 Realign logging levels. 
Stats now logs all operations, stats2 additionally intermediate messages
(search entries).
 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
05f2ac2583 Unify logging output 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
495dfa69a2 Split client/upstream PDU size limits 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
58a880bc7b Convert backend and upstream management to use CIRCLEQ. 
This alone doesn't make the server do a round robin.
 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
77f2c57132 Reset c_*ber after freeing and check c_pendingber race 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
ea7e40b8e7 Shutdown handling 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
fba4bed6e2 connection reference counting 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
c0d254a4ce Do not leak BerElements 2020-11-17 17:55:46 +00:00
Ondřej Kuzník
5bdb4e1570 Update maximum number or parameters for backend 2020-11-17 17:42:44 +00:00
Ondřej Kuzník
bf66b48fe3 Upstream connection setup 2020-11-17 17:15:40 +00:00
Ondřej Kuzník
1a45249054 Update connection init 2020-11-17 17:15:40 +00:00
Ondřej Kuzník
46ddb4039c lloadd ahoy 2020-11-17 17:15:40 +00:00