| Commit message (Collapse) | Author | Age | Files | Lines |
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allows setting the oflags to make flow_read and flow_write blocking or
non-blocking (FLOW_O_NONBLOCK).
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This allows someone to disable the use of DNS in the shim UDP. It also
adds a config file specific for the shim UDP (which holds the nsupdate
location). Certain defines were also moved to the global config file.
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returning -1 as uint32_t leads to bugs.
also changed types in GPB to sint to use zigzag encoding.
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This better reflects the use as the pid is appended to that name.
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This commit has a first implementation of flow allocation (the "slow
path") and read/write (the "fast path") for ouroboros. It provides
basic but unstable communications over the shared memory.
It required a lot of changes all over the stack, and fixes a number of
previously undetected issues.
This PR still need heavy revision regarding data model, locking and
cleanup.
lib/dev: modifications to the API. It now uses an ap_init() call to
set the AP name and sets the Instance ID to the pid of the process. It
also binds the AP to the shared memory and creates tables for mappings
in the fast path. A call to ap_fini() releases the resources.
lib/shm_ap_rbuff: added ring buffer for data exchange between
processes in the fast path. It passes an index in the shm_du_map.
lib/shm_du_map: rewrote API to work with calls from dev.c. Garbage
collector added. Tests updated to new API.
ipcpd/ipcp-data: removed everything related to flows, as these are
universal for all ap's and kept in ap_data (dev.c), or similar structs
for shim ipcps.
shim-udp: added flow allocator and read/write functions and shm
elements.
irmd: revised data model and structures necessary for flow allocation.
tools: echo updated to new dev.h API.
messaging system was updated to comply with new flow allocation
messages. All exchanges use pid and port_id to bootstrap the fast
path.
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This adds support for adding the application name to a BIND DNS server
through the nsupdate utility.
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flow allocation now propagates on the client side up to the IPCP.
added UNKNOWN_AP and UNKNOWN_AE definitions to dev.h
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ipcp_create now returns the pid of the created process to allow for
more efficient scripting.
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All instance-id's in ouroboros will be set by the system to the pid of
the process associated with this application process instance. This
means that the user has no way to choose the instance id's. Function
calls that assumed manually defined instance id's have been replaced
throughout the system.
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Unregistering ap's now works. An AP now registers/unregisters its AP-I
by sending its AP name and its pid to the IRMd. The IPCPs register
whatevercast names. An AP name is currently mapped on a whatevercast
name represented by the same string literal. The IRMd allows
registration of only one AP-I per AP. A Name Space Management system
is needed in the processing system so we can resolve this completely.
Changing the stack to register whatevercast names required some changes
all over the ipcpd implemented and in the library.
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Basic functions for implementation of IPC processes, and
implementation of core functions of the shim IPCP over UDP. Updates
to the build system to compile these IPC processes, as well as some
fixes in the irmd (rudimentary capturing exit signals) and some fixes
in the library, mainly relating to the messaging.
Basic implementation of creation / bootstrapping / deletion of the
shim UDP. Placeholders for other functions.
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This changes the name of the IPCP types after discussions with
Dimitri.
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This adds dif_config to the prototype, in which one is able to specify
the parameters a DIF should have. The bootstrap operation of an IPCP
takes this as parameter and is oblivious to whether it is a shim or a
normal IPCP. The dif_config struct is also correctly serialized and
deserialized and passed opaquely to the correct IPCP. This IPCP is in
charge of deserializing it correctly.
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This moves strdup to utils to make it globally available.
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This adds the messages that are sent to the IPCPs related to
flows. Some messages are also sent to the IRMd (e.g. when a new flow
arrives).
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This adds the operations related to flows to ipcp.h. Previously it
only contained operations on the IPCP level.
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lib, irmd: Update communication with IRMd
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All messages sent to the IRMd now also get a reply back with the
result of the operation.
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fixes wrong check, checks now use lazy evaluation
changed the order of instance_name_cpy to (dst, src)
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all functions taking a char * ap_name and uint id now take either a
instance_name_t or instance_name_t *
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FLOW_O_INVALID now defined in terms of conflicting options
bugfix in setopts
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This removes the custom ser/des methods for communicating with the
IPCP daemon and also uses GPB instead.
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IRMd and dev.c now also use GPB instead of our own ser/des. irm_msg
struct has been dropped as well as the methods associated with it.
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Removes rina_name_t from that API. Passing ap_name and api_id as
params instead. The IRM tool has been updated accordingly. Some errors
in the build related to protobuf-c have also been resolved.
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This adds a cmake file so that the build can ask to generate
protobuf-c files from .proto files. The messages between the IRM and
the library are compiled into the library.
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moved the flow definition to the library and made it public.
thread-safety implemented without compiler checks.
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logs should be included in source, not in header
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Updated tests. Added code to drop a corner case (packet where the tail
PCI would cross the edge of the ring buffer) because solving this very
rare case is not worth the performance hit on the ringbuffer the extra
code would incur. This means the ringbuffer might drop a very small
percentage of packets.
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lib: Adds IRMd messages for the dev.h API calls
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This adds several messages for the dev.h API calls to communicate with
the IRM daemon. The deserializing of these messages is still missing
and the irmd hasn't been updated with them either.
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logs will now display as follows:
(EE): error, in red
(WW): warning, in yellow
(II): info, in green
(NI): missing code, in blue
(DB): debug messages in white
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This adds a simple echo application written to show application how to
use the API. It also updates the dev.h header file with the insights
gained from performing this excercise.
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Got rid of divisions and modulo operations.
Change in the meaning of a #define.
SHM_DU_MAP_SIZE: is now an exponent of 2. Default is 10, allowing
for 1024 blocks in the map.
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Elements must be created/destroyed in order, but IPCPs can access PCI
while the PDU is in the ring buffer.
Test updated, no more waits are needed.
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The shared memory map will allow passing SDU's between IPCPs
efficiently. It is a single block of managed memory. SDU's are stored
in a shm_du_buff datastructure, which is a list of blocks inside the
shared memory region. The mechanism for passing SDU's is not yet
implemented and could be either within the region or using another
local IPC mechanism.
The following things are configured at compile time:
SHM_FILE_NAME : the name. Default is "ouroboros_du_map".
SHM_DU_BUFF_BLOCK_SIZE: size of a block inside the shared memory
region. Default is the pagesize of the system.
SHM_DU_MAP_SIZE : the approximate size in bytes of the shared
memory map. The actual filesize may differ by
a small margin. Default is 4MB.
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This adds the messages required for the IRMd to communicate with an
IPC Process through the library.
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This removes some memleaks present in the sockets layer. It also fixes
the bad initialization of the difs_size param in the irm_msg.
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This adds the functionality to create and destroy IPCPs. Upon creation
a new process is forked and execve'd. Upon destruction the IPCP is
destroyed by killing it with SIGTERM.
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PCI can now occupy at most one block
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This moves the function definitions of list.h into a separate source
file to avod linker errors when including the file in more than one
source file.
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replaced hard tabs with soft tabs according to coding guidelines
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This adds a test for the bitmap. During the testing I also removed
some bugs that were present in the bitmap implementation.
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