Does gramine support SCTP ?

[nitinkumar-git]

Hi,

We are trying to run AMF application container image using GSC toolchain in SGX. It has dependancy on sctpd module which needs SCTP kernel module to be loaded on host.

When we just tried to run only sctpd process as docker entrypoint we got below error.

Gramine is starting. Parsing TOML manifest file, this may take some time...
-----------------------------------------------------------------------------------------------------------------------
Gramine detected the following insecure configurations:

  - sgx.debug = true                           (this is a debug enclave)
  - loader.insecure__use_cmdline_argv = true   (forwarding command-line args from untrusted host to the app)

Gramine will continue application execution, but this configuration must not be used in production!
-----------------------------------------------------------------------------------------------------------------------

I1214 13:33:21.833194     1 magma_logging_init.h:28] Setting verbosity to 4
E1214 13:33:21.837071000       1 socket_utils_common_posix.cc:197] check for SO_REUSEPORT: {"created":"@1671024801.837048000","description":"OS Error","errno":92,"file":"src/core/lib/iomgr/socket_utils_common_posix.cc","file_line":171,"os_error":"Protocol not available","syscall":"setsockopt(SO_REUSEPORT)"}

With normal container image the sctp daemon is working fine.

Also in gramine repo, for libos tests ltp.cfg contains below lines for sctp:
https://github.com/gramineproject/gramine/blob/master/libos/test/ltp/ltp.cfg

# sctp protocol not supported
[sendto02]
skip = yes

Does this mean gramine doesn't support SCTP?

[boryspoplawski]

Yes, Gramine does not support SCTP