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Clients cannot know at svm region detach time if the shm backing files
have been recreated (e.g., if vpp restarts) and therefore should not try
to unlink them. Otherwise, terminating clients attached to previous
instantiations of a re-allocated region end up making the new instance
un-mappable by removing its backing file.
Change-Id: Idcd0cab776e63fd75b821bc9f0fac58217b9ccbe
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I7487eb74b8deebff849d662b55a6708566ccd9ef
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Mapping shared virtual memory at 0x30000000, which appears to be derived
from x86-32, turns out to be too close to the heap on arm64 systems. The
symptoms of memory corruption were random and included crashes in the
Python runtime and what appeared to be corruption of malloc's internal
mutex. Thanks to Gabriel Ganne for pointing out that disabling ASLR seemed
to mitigate the situation.
This patch maps SVM regions at an offset from the arm64 kernel constant
TASK_UNMAPPED_BASE and also assumes a 48-bit VA (for Ubuntu).
Change-Id: I642e5fe83344ab9b5c66c93e0cf1575c17251f3b
Signed-off-by: Brian Brooks <brian.brooks@arm.com>
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- Teach vpp_api_test to send/receive API messages over sockets
- Add memfd-based shared memory
- Add api messages to create memfd-based shared memory segments
- vpp_api_test supports both socket and shared memory segment connections
- vpp_api_test pivot from socket to shared memory API messaging
- add socket client support to libvlibclient.so
- dead client reaper sends ping messages, container-friendly
- dead client reaper falls back to kill (<pid>, 0) live checking
if e.g. a python app goes silent for tens of seconds
- handle ping messages in python client support code
- teach show api ring about pairwise shared-memory segments
- fix ip probing of already resolved destinations (VPP-998)
We'll need this work to implement proper host-stack client isolation
Change-Id: Ic23b65f75c854d0393d9a2e9d6b122a9551be769
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I482bb9654f4dfe240bace5c2b61056cfd04cf018
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
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API clients would fail with an ASSERT (and core dump) whenever
the API shared memory segment could not be opened.
This returns an error value to the client's connect instead.
Change-Id: Id122a3a090b24b139c382ae09f341bde61fd2540
Signed-off-by: Ole Troan <ot@cisco.com>
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This is preparation for new C API. Moving common stuff to separate
headers reduces dependency issues.
Change-Id: Ie7adb23398de72448e5eba6c1c1da4e1bc678725
Signed-off-by: Klement Sekera <ksekera@cisco.com>
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