ouroboros/src/lib, branch 0.18.4

lib: Ease lock in timerwheel

2021-12-22T15:37:41+00:00

It was taking a write lock when a read lock was sufficient. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix waiting for FRCT at deallocation

2021-12-22T15:35:55+00:00

This is a fix to wait for outstanding retransmissions when a flow is deallocated. Instead of waiting the full timeout, it will now wait in the same tic increments used within FRCT. Bit of a stopgap at the moment, FRCT and the flows are in need of a serious refactor. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Add missing rwlock unlock in FRCT

2021-12-22T15:35:18+00:00

There was a missing unlock in FRCT. Also fixes some indentation. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix flow dealloc after expired FRCT timeout

2021-12-22T15:34:27+00:00

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 Signed-off-by: Sander Vrijders

lib: Set initial sender rwe to sender seqno

2021-12-22T15:33:50+00:00

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 Signed-off-by: Sander Vrijders

lib: Remove old rib_fini code

2021-12-06T16:52:03+00:00

There was some leftover code in dev.c wrt to the process RIB that is not needed anymore. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Fix undefined behaviour in sha3

2021-12-06T16:51:55+00:00

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 Signed-off-by: Sander Vrijders

lib: Don't initialize process RIB for IPCPs

2021-07-10T14:35:01+00:00

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 Signed-off-by: Sander Vrijders

lib: Application RIB with FRCT statistics

2021-06-30T07:20:15+00:00

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 Signed-off-by: Sander Vrijders

lib: Pass full path for RIB entries

2021-06-29T06:56:03+00:00

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 ///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 ///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 //flows/ 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 Signed-off-by: Sander Vrijders