| Commit message (Collapse) | Author | Age | Files | Lines |
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This revises the list_move operation, which was giving weird
behaviour.
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This fixes several bugs in the ro sets, rib. And it fixes several bugs
in the graph and routing component of the normal IPCP.
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When something fails, the successfully sent CDAP messages should be
reported back. Invoke_ids were not correctly released.
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The routing now takes the results of the routing table to fill in the
forwarding table, by going through the neighbors and filling in the
right fd.
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This solves some race conditions where packets arrive on a flow before
it is added to a flow_set.
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You can now add multiple flows to a CDAP instance. This will simplify
sending messages to different peers (e.g. for syncing the RIB). A
request will now return an array of keys terminated by
CDAP_KEY_INVALID. Removes the enum from the CDAP proto file to just
take the opcode as an integer.
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Our mailserver was migrated from intec.ugent.be to the central
ugent.be emailserver. This PR updates the header files to reflect this
change as well. Some header files were also homogenized if the
parameters within the functions were badly aligned.
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The CMakeLists files are now properly indented.
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This adds the connection manager which allows the different AEs of the
normal IPCP to register with it. An AE can then use the connection
manager to allocate a flow to a neighbor, or to wait for a new
connection from a neighbor.
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By removing authentication as part of CACEP, all policies
disappear. CACEP becomes a policy-free connection establishment
protocol between Application Entities. Authentication can later be
added cleanly as a pure policy function when needed.
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The AE name should not be passed over the layer boundaries. If an
application has more than one AE it should exchange this in CACEP.
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The information passed to CACEP is split between the information about
the connection and the information to be used during the
authentication exchange.
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This fixes bad timedwaits for the state of the reg_entry. Also
slightly revised timedwaits throughout the prototype.
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This exchanges a protocol name, a protocol version and concrete syntax
for the protocol upon CACEP. For CDAP, only version 1 and GPB are
supported. No lists for other supported versions or syntaxes are
exchanged (but the proto file supports it). CACEP fails if there is a
mismatch between the protocol names, version and syntax specified by
the communicating parties.
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Revises CACEP policies to stateless library calls. It provides two
policies: an anonymous authentication policy that will generate random
credentials for the peer, and a simple authentication policy that will
return a name for the peer and an address.
Changes the normal IPCP to use the updates API calls.
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lib: Fix bug in sha3
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This prevented destruction of a CDAP instance that had a timed out
request.
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Moves the definitions of paths in the RIB for the normal IPCP to a
header ribconfig.h to avoid repetition.
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This revises the endian header to let the build time checks of
endianness be performed by the standard libraries. We just check for
the OS that is being used and provide the endian functions from
OpenBSD to everyone. It also updates the SHA3 sources to use this new
header. The byte order header is removed.
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This facilitates sending arbitrary variables over CDAP.
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The acceptor will not log disconnects with IRMd. Unexpected
disconnects will be reported and handled by management components.
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This adds a header for dealing with endianness in ouroboros. It is
extracted from the byte_order header in the library (which now
includes this header). It also exposes the functions ntohl, ntohll,
htonl and htonll, necessary for converting 32 and 64 bit values for
storage and retrieval from the RIB (which should store multi-byte
values in network byte order).
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The timerwheel and RIB use timedwaits. The condition variables are now
correctly initialised to use the configuration defined clock.
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FreeBSD defines its own bswap64 in the <sys/endian.h> header, which is
now included correctly.
POSIX requires XSI or RTS extensions to be enabled for the
sa_sigaction field to be visible. Linux doesn't do the check
correctly, but FreeBSD does.
Removes the LOG_MISSING call which was deprecated with the last
revision of the logging system.
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The IPCP will now respond with an ipcp_create_r message when it fails,
informing the IRMd.
Also adds some const qualifiers in the public headers and fixes
some formatting in dev.c.
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With the changes in this commit Ouroboros will compile with the
pedantic flag on when the standard is C99. The main problem was the
used of unnamed structs and unions, which is C11.
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This removes the logfile and outputs log messages to the logging
system. The creation of the logfiles (as well as the ap_init() call)
were moved into ipcp_init() to simplify the IPCP creation and
shutdown.
Fixes #25
Fixes #27
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The pci function will store offsets to avoid having to recalculate
them every time. TTL handling is removed from the fmgr, the TTL is
automatically decreased when deserializing the PCI (or set to 1 if
there is no TTL present so the PDU will be forwarded). The
deserialisation function now takes a pointer to a struct pci as input
to avoid memory allocation and release each time a PDU is
processed. Some checks have been replaced with assert() and return
values replaced with void where it makes sense.
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This PR updates the normal IPCP to use the new RIB. The old ribmgr is
removed and replaced by a stub that needs to be implemented. All
components (dir, fmgr, frct) were adapted to the new RIB API. A lot
of functionality was moved outside of the ribmgr, such as the
addr_auth, which is now a component of the IPCP. The address is also
stored to the ipcpi struct. The irm tool has an option to set the gam
policy of the rib manager.
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In extreme cases, the response to a CDAP request can arrive before the
AE doing the request has called cdap_request_wait. This PR handles it
by waiting for the state to move away from INIT before responding.
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The new element must be added before the larger element
(list_add_tail, since it's a circular list).
Also fixes a bug and improves the locking in rib_pack (rib must be
locked until the subtree is fully packed in the buffer).
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The rib_pack function allows packing a subtree of the RIB for
dissemination. The options PACK_HASH_ROOT and PACK_HASH_ALL will add
the hashes for the root object of the packed subtree or every object
to the packed message respectively. Checking of the hashes is
currently only performed at the top level object, verifying the
complete operation.
The rib_unpack function unpacks a packed message and inserts its
contents in the RIB. The option UNPACK_CREATE flags that the unpack
operation is allowed to create new objects, else it will only update
existing objects. More advanced options could be added in the future.
The packed message structure uses Google Protocol Buffers, as defined
in ro.proto.
It adds tests for these functions to the rib_test.
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Returns the names of the nodes (not the full paths). The function
allocates memory to the children pointer that should be freed.
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The -EAGAIN from a failed non-blocking flow read would trigger the
assertion. This snuck in somehow (we need some unit tests for dev.c).
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The new RIB is implemented as a tree with doubly linked nodes (parents
keep a link to each child, each child keeps a link to its parent). An
index is kept in a btree using CRC32 hashes of the path name in the
RIB. Nodes keep an SHA3-256 hash value that is unique for the entire
subtree. This allows quick checks to see if two RIB subtrees are in
sync. The event system for the RIB is based on the event system for
flows (fqueue), but implemented completely in dynamic memory using
linked lists. An initial test is performed for the RIB. This PR does
not modify existing code to use the new RIB.
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Allows moving the elements of one linked list to
another. Re-initializes the source list.
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Adds an implementation of B-trees of order k (k children, min fill is
k/2, max fill k - 1). Useful to implement indexes for faster lookups.
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