| Commit message (Collapse) | Author | Age | Files | Lines |
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If the timeout is already expired, the wait variable would be negative
and return a negative value for the __frcti_dealloc function, thinking
that the timeout was not expired causing an unnecessary wait even if
all packets are acknowledged.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The initial sender right window edge (indicating acknowledged packet
sequence number) was initialized to seqno - 1. This should be the same
as seqno, since we acknowledge with the next expected sequence number.
It also indicates that a flow without traffic has no outstanding
acknowledgements.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The dt component had init/start commands somewhat outside of the
overall flow of startup of the unicast IPCP. This was probably some
old code and wasn't needed.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Each policy folder will now have a pol.h file, so that (in most cases)
adding a new policy only requires changes inside the policy folder.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The DHT is now a proper directory policy instead of a unicast IPCP
component.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This makes the DHT a single directory implementation and moves it to
the stack (init/fini instead of create/destroy). This is a step
towards making it a directory policy, in line with our other policy
implementations.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The policies were all in a single folder pol/, and have been moved to
a folder per component/mechanism to keep things a bit more orderly.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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There was some leftover code in dev.c wrt to the process RIB that is
not needed anymore.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Some cases were not guarded by explicit fallthrough where needed.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Arithmetic with NULL pointers is undefined behaviour. Caught by clang
13. Fixed by using uintptr_t, which is guaranteed to be the size of a
pointer.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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On more recent Mac OS X (>= Catalina) the system volume is read-only,
even with System Integrity Protection disabled. This requires an
additional remount step to install something into /usr. Probably
better to play by their rules and default the install to /usr/local.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The last couple of commits fix compilation on OS X. So bumping the
patchlevel makes sense to fix compilation for the master branch as
well.
Signed-off-by: Sander Vrijders <[email protected]>
Signed-off-by: Dimitri Staessens <[email protected]>
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The print output for MB-ECN had a size_t conversion to uint64_t that
some compilers complain about.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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prctl.h is linux only.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Apparently that function isn't implemented on some versions of OS
X. On these systems, we can just use sigwait, but now the IPCP will
also accept signals not coming from the IRMd.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The logic for additive increase was botched. It was adding to the
current window limit, and to avoid a count-to-infinity when sending
below the limit, I added a check that the application was trying to
send more than the current limit. This fails in congestion avoidance
mode when the IPCP is throttling traffic below the limit; causing the
app to never increase the congestion window (and even worse, to keep
decreasing in some cases).
The Additive Increase will now always add bandwidth to the latest
sending rate instead of the window bandwidth limit, avoiding all the
problems.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The u_snd and u_rcv variables were not guarded by ifdefs when
updating.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The RIB of the flow allocator will now export the number of flow
updates sent/received per flow.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This will reduce the linux high resolution slack timer in IPCPs. Linux
default for userspace processes is 50us. It is configurable at build
using IPCP_LINUX_SLACKTIMER_NS. Default is now 1us.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The rate was supposed to be 1 update per 8 data packets, but the
calculation was doing 1 update per 4 data packets.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The upstream/downstream stats were switched.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This will skip rib_init() at __init() for IPCPs (or at least,
processes that have "ipcpd" in the executable name). The previous code
tried to unmount the generic mount and then remount under the ipcp
name, but it often failed because fuse_mount() is asynchronous and the
mount was not up at the time of the unmount() call. Renaming the mount
instead of unmounting failed for the same reason. This is a better
fix for now.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Application flows can now be monitored from the RIB, exposing FRCT
statistics (window edges, retransmission timeout, rtt estimate, etc).
Application RIB requires user permissions to be able to access
/dev/fuse.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Layer info was not converted to parse the full path with the latest RIB
change.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The mode_t mask wasn't guarded by ifdefs.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The read functions for the RIB will now receive the full path, instead
of only the entry name. For IPCPs, we organized the RIB in an
/<ipcp>/<component>/entries
structure with a directory per component, so we don't need the full
path at this point. For process flow information, it's a lot more
convenient to organize it the following way
/<pid>/<fd>/stat
We can then register/unregister the flow descriptor when the frct
instance is created, and for getting the stats, we'd know the flow
descriptor from the fuse file path. If we would create a file per flow
instead of a directory per flow, something like
/<pid>/flows/<fd>
we'd need to do additional bookkeeping to list the contents of that
directory (we would need to track all flows with an active FRCT
instance), that fuse knows because it tracks the directories.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The irmd was creating the directory with the wrong mode set because
the default mask (022) was not cleared.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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These RIBs were not properly unregistered on shutdown.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The RIB API had a struct stat in the getattr() function, which made
all components that exposed variables via the RIB dependent on
<sys/stat.h>. The rib now has its own struct rib_attr to set
attributes such as size and last modified time.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Compilation failed on FreeBSD 14 with fuse enabled because of some
missing definitions. __XSI_VISIBLE must be set before including
<ouroboros/rib.h> for some definitions in <sys/stat.h>. FreeBSD
doesn't know the MSG_CONFIRM flag to sendto() or
CLOCK_REALTIME_COARSE, which are Linux-specific.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The fa_handle_packet function loop is non-void but didn't have a
return statement. Only got picked up if I build from AUR, which is
weird.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This add an ouroboros/pthread.h header that wraps the
pthread_..._unlock() functions for cleanup using
pthread_cleanup_push() as this casting is not safe (and there were
definitely bad casts in the code). The close() function is now also
wrapped for cleanup in ouroboros/sockets.h.
This allows enabling more compiler checks.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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There was a switch-case without a default, causing some compiler
warnings.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This assert() causes ipcpd and subsequent irmd abort() when shutting
down debug builds. Should be fixed some day when other components are
more robust (frct retransmissions and routing).
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This was beneficial on dual-XEON CPU systems, but on most hardware,
this kills performance when running multiple IPCPs on a single CPU.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Max value of UINT64 can be 20 characters when printed, need an extra
byte for sprintf trailing '\0'.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This fixes scaling of the congestion window, which was a buggy mess.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This moves Resource Information Base (RIB) initialization into the
ipcp_init() function, so all IPCPs initialize a RIB. The RIB not shows
some common IPCP information, such as the IPCP name, IPCP state and
the layer name if the IPCP is part of a layer.
The initialization of the hash algorithm and layer name was moved out
of the common ipcp source because IPCPs may only know this information
after enrollment. Some IPCPs were not even storing this information.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The broadcast IPCP was missing in the known types, causing the type to
show as UNKNOWN.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The tag was set to 0.18, but the version was still at 17.5 in
CMake.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The new GCC 11.1 compiler discovered s_dist would be uninitialized
with an unknown policy, so it doesn't need to be free'd. Also removes
some unneeded includes in broadcast dt.c that I had pending.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This removes a program name variable that was not used anymore.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The connection manager and enrolment components of the unicast and
broadcast IPCP have a lot in common, as conjectured in the paper. The
initial implementation of the broadcast IPCP just duplicated the
code. This moves the shared functionality to common ground.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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This removes the raptor IPCP. The code hasn't been updated for a
while, and wouldn't compile. Raptor served its purpose as a PoC for
Ouroboros-over-Ethernet-Layer-1, but giving the extreme niche hardware
needed to run it, it's not worth maintaining this anymore.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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It's not needed to include enroll.h.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The UDP layer will now use a single (configurable) UDP port, default
3435. This makes it easer to allocate flows as a client from behind a
NAT firewall without having to configure port forwarding rules. So
basically, from now on Ouroboros traffic is transported over a
bidirectional <src><port>:<dst><port> UDP tunnel. The reason for not
using/allowing different client/server ports is that it would require
reading from different sockets using select() or something similar,
but since we need the EID anyway (mgmt packets arrive on the same
server UDP port), there's not a lot of benefit in doing it. Now the
operation is similar to the ipcpd-eth, with the port somewhat
functioning as a "layer name", where in UDP, the Ethertype functions
as a "layer name".
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The ugent email addresses are shut down, updated to Ouroboros mail
addresses.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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Happy New Year, Ouroboros!
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The ECN marking function should be able to use the packet QoS to allow
prioritizing traffic under congestion. Not yet implemented in MB-ECN.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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The t_sent variable is a remnant from the first version and isn't
needed anymore.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
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