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gerrit.osmocom.org / simtrace2 / 67a6d5724cb3040af17f5d420e782bba613cb8c4
commit67a6d5724cb3040af17f5d420e782bba613cb8c4[log] [tgz]
authorHarald Welte <laforge@osmocom.org>Wed Nov 16 18:51:51 2022 +0100
committerlaforge <laforge@osmocom.org>Sat Nov 19 09:02:23 2022 +0000
tree3167d73a523249abe2bc1c62e8bc542a97ca4ee6
parent61394cde291ac98c1a20d2a31786d5bc1c1ef097 [diff]
firmware/sniffer: Handle WT timeouts via ring-buffer

Before this patch, all UART characters went through a fifo/ringbuffer
of depth 512, while events like timeout were delivered directly via
a global flags variable from ISR to main code.  This means that one or
more correct/complete TPDUs could theoretically still be in the FIFO,
but the "Fast path" of the timeout handling is pre-empting that and
messing with the state machines.

All events from the UART should be delivered via the ring-buffer to make
sure they arrive in order at the main function.

The old "report timeout via change flags in separate USB message" code
is left in place.  On the USB protocol we should keep it for
compatibility.  Internally we should probably also migrate that over
to the new ring-buffer method in a second step.

Change-Id: I4434c6fcd59d1a425e9ded734bbc8b0411a0a0d8
1 file changed
tree: 3167d73a523249abe2bc1c62e8bc542a97ca4ee6
  1. contrib/
  2. debian/
  3. firmware/
  4. hardware/
  5. host/
  6. .clang-format
  7. .gitignore
  8. .gitmodules
  9. .gitreview
  10. clk_calc.py
  11. git-version-gen
  12. Makefile
  13. README.md
  14. TODO-RELEASE
README.md

SIMtrace v2.0

This is the repository for the next-generation SIMtrace devices, providing abilities to trace the communication between (U)SIM card and phone, remote (U)SIM card forward, (U)SIM man-in-the-middle, and more.

NOTE: Nothing in this repository applies to the SIMtrace v1.x hardware or its associated firmware. SIMtrace v1.x is based on a different CPU / microcontroller architecture and uses a completely different software stack and host software.

Supported Hardware

  • Osmocom SIMtrace 1.x with SAM3 controller ** this is open hardware and schematics / PCB design is published
  • sysmocom sysmoQMOD (with 4 Modems, 4 SIM slots and 2 SAM3) ** this is a proprietary device, publicly available from sysmocom
  • sysmocom OWHW (with 2 Modems and 1 SAM3 onboard) ** this is not publicly available hardware, but still supported

This Repository

This repository contains several directory

  • firmware - the firmware to run on the actual devices
  • hardware - some information related to the hardware
  • host - Programs to use on the USB host to interface with the hardware

The host software includes

  • libosmo-simtrace2 - a shared library to talk to devices running the simtrace2 firmware
  • simtrace2-list - list any USB-attached devices running simtrace2 firmware
  • simtrace2-sniff - interface the 'trace' firmware to obtain card protocol traces
  • simtrace2-cardem-pcsc - interface the 'cardem' fimrware to use a SIM in a PC/SC reader