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SYSLIB CHANGES: - DS calls to publish / retrieve labels consider endpoints instead of u32_t. VFS CHANGES: - mapdriver() only adds an entry in the dmap table in VFS. - dev_up() is only executed upon reception of a driver up event. INET CHANGES: - INET no longer searches for existing drivers instances at startup. - A newtwork driver is (re)initialized upon reception of a driver up event. - Networking startup is now race-free by design. No need to waste 5 seconds at startup any more. DRIVER CHANGES: - Every driver publishes driver up events when starting for the first time or in case of restart when recovery actions must be taken in the upper layers. - Driver up events are published by drivers through DS. - For regular drivers, VFS is normally the only subscriber, but not necessarily. For instance, when the filter driver is in use, it must subscribe to driver up events to initiate recovery. - For network drivers, inet is the only subscriber for now. - Every VFS driver is statically linked with libdriver, every network driver is statically linked with libnetdriver. DRIVER LIBRARIES CHANGES: - Libdriver is extended to provide generic receive() and ds_publish() interfaces for VFS drivers. - driver_receive() is a wrapper for sef_receive() also used in driver_task() to discard spurious messages that were meant to be delivered to a previous version of the driver. - driver_receive_mq() is the same as driver_receive() but integrates support for queued messages. - driver_announce() publishes a driver up event for VFS drivers and marks the driver as initialized and expecting a DEV_OPEN message. - Libnetdriver is introduced to provide similar receive() and ds_publish() interfaces for network drivers (netdriver_announce() and netdriver_receive()). - Network drivers all support live update with no state transfer now. KERNEL CHANGES: - Added kernel call statectl for state management. Used by driver_announce() to unblock eventual callers sendrecing to the driver. |
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| .. | ||
| down | ||
| dstest.c | ||
| inc.h | ||
| Makefile | ||
| README | ||
| run | ||
| subs.c | ||
| system.conf | ||
Test Program for DataServer How to run ========== 1. Type `make run` to prepare and run test. 2. When done testing, type `make clean` to clean up. How the test works ================== `dstest` tests the new DS API (excluding ds_subscribe() and ds_check()). test_u32, test_str, test_mem, test_label, and test_map test U32, STR, MEM, LABEL and MAP type respectively. Invalid invokation is tested as well. Erroneous conditions are tested only once. For example, publishing an entry with same label name, but without DSF_OVERWRITE set, is tested in test_u32 and nowhere else again. Type-specific features are always tested. `subs` tests ds_subscribe() and ds_check(). The server subscribes to a U32 type. When `dstest` runs, `subs` catches all the updates.