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gerrit.openbmc.org / openbmc / bmcweb / d14a48ff5e539633f2e3180525f3779f90ad3e78
commitd14a48ff5e539633f2e3180525f3779f90ad3e78[log] [tgz]
authorCarson Labrado <clabrado@google.com>Wed Feb 22 00:24:54 2023 +0000
committerCarson Labrado <clabrado@google.com>Mon Mar 20 20:33:57 2023 +0000
treeda0d8144f1adb6e225ac0a562edfe1ba816e4c92
parent8b2521a5a3be479814beb316975bf3de0b4e378f [diff]
Aggregation: Increase response read limit to 50MB

With Redfish aggregation, responses from satellite BMCs can be on the
order of MBs due to use cases like logging or binary payloads.
Offloading $expand could similar result in responses that exceed the
current read limit of 128 KB.

Splits the connection pools used for aggregation and EventService so
that the response read limit is 50MB for responses associated with
aggregation.  Pools used by EventService keep the current limit of 2^17
bytes or 128 KB.  It also propogates a ConnectionPolicy object that gets
instantiated within HttpClient, which allows per-client policies for
retry/byte limits.  This allows EventService and aggregation to have
different policies.

Tested:
With aggregation enabled I was able to return a response from a
satellite BMC which was than 2MB.  Ran the Redfish Mockup Creator and it
was able to successfully query all aggregated resources as part of
walking the tree.  Also verified that HTTP push events still work with
EventListener.

Change-Id: I91de6f82aadf8ad6f7bc3f58dfa0d14c0759dd47
Signed-off-by: Carson Labrado <clabrado@google.com>
Signed-off-by: Ed Tanous <edtanous@google.com>
5 files changed
tree: da0d8144f1adb6e225ac0a562edfe1ba816e4c92
  1. .github/
  2. config/
  3. http/
  4. include/
  5. redfish-core/
  6. scripts/
  7. src/
  8. static/
  9. subprojects/
  10. test/
  11. .clang-format
  12. .clang-tidy
  13. .dockerignore
  14. .gitignore
  15. .markdownlint.yaml
  16. .openbmc-enforce-gitlint
  17. .prettierignore
  18. .shellcheck
  19. AGGREGATION.md
  20. CLIENTS.md
  21. COMMON_ERRORS.md
  22. DBUS_USAGE.md
  23. DEVELOPING.md
  24. HEADERS.md
  25. LICENSE
  26. meson.build
  27. meson_options.txt
  28. OEM_SCHEMAS.md
  29. OWNERS
  30. README.md
  31. Redfish.md
  32. run-ci
  33. setup.cfg
  34. TESTING.md
README.md

OpenBMC webserver

This component attempts to be a "do everything" embedded webserver for OpenBMC.

Features

The webserver implements a few distinct interfaces:

  • DBus event websocket. Allows registering on changes to specific dbus paths, properties, and will send an event from the websocket if those filters match.
  • OpenBMC DBus REST api. Allows direct, low interference, high fidelity access to dbus and the objects it represents.
  • Serial: A serial websocket for interacting with the host serial console through websockets.
  • Redfish: A protocol compliant, DBus to Redfish translator.
  • KVM: A websocket based implementation of the RFB (VNC) frame buffer protocol intended to mate to webui-vue to provide a complete KVM implementation.

Protocols

bmcweb at a protocol level supports http and https. TLS is supported through OpenSSL.

AuthX

Authentication

Bmcweb supports multiple authentication protocols:

  • Basic authentication per RFC7617
  • Cookie based authentication for authenticating against webui-vue
  • Mutual TLS authentication based on OpenSSL
  • Session authentication through webui-vue
  • XToken based authentication conformant to Redfish DSP0266

Each of these types of authentication is able to be enabled or disabled both via runtime policy changes (through the relevant Redfish APIs) or via configure time options. All authentication mechanisms supporting username/password are routed to libpam, to allow for customization in authentication implementations.

Authorization

All authorization in bmcweb is determined at routing time, and per route, and conform to the Redfish PrivilegeRegistry.

*Note: Non-Redfish functions are mapped to the closest equivalent Redfish privilege level.

Configuration

bmcweb is configured per the meson build files. Available options are documented in meson_options.txt

Compile bmcweb with default options

meson builddir
ninja -C builddir

If any of the dependencies are not found on the host system during configuration, meson will automatically download them via its wrap dependencies mentioned in bmcweb/subprojects.

Use of persistent data

bmcweb relies on some on-system data for storage of persistent data that is internal to the process. Details on the exact data stored and when it is read/written can seen from the persistent_data namespace.

TLS certificate generation

When SSL support is enabled and a usable certificate is not found, bmcweb will generate a self-signed a certificate before launching the server. Please see the bmcweb source code for details on the parameters this certificate is built with.

Redfish Aggregation

bmcweb is capable of aggregating resources from satellite BMCs. Refer to AGGREGATION.md for more information on how to enable and use this feature.