Re: [PATCH v7 11/11] selftests/bpf/sockopt: Add io_uring support

[Martin KaFai Lau <martin.lau@linux.dev>]

On 10/16/23 6:47 AM, Breno Leitao wrote:
> Expand the sockopt test to use also check for io_uring {g,s}etsockopt
> commands operations.
> 
> This patch starts by marking each test if they support io_uring support
> or not.
> 
> Right now, io_uring cmd getsockopt() has a limitation of only
> accepting level == SOL_SOCKET, otherwise it returns -EOPNOTSUPP. Since
> there aren't any test exercising getsockopt(level == SOL_SOCKET), this
> patch changes two tests to use level == SOL_SOCKET, they are
> "getsockopt: support smaller ctx->optlen" and "getsockopt: read
> ctx->optlen".
> There is no limitation for the setsockopt() part.
> 
> Later, each test runs using regular {g,s}etsockopt systemcalls, and, if
> liburing is supported, execute the same test (again), but calling
> liburing {g,s}setsockopt commands.
> 
> This patch also changes the level of two tests to use SOL_SOCKET for the
> following two tests. This is going to help to exercise the io_uring
> subsystem:
>   * getsockopt: read ctx->optlen
>   * getsockopt: support smaller ctx->optlen

Acked-by: Martin KaFai Lau <martin.lau@kernel.org>