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  • Eric Leblond's avatar
    libbpf: add error reporting in XDP · bbf48c18
    Eric Leblond authored
    
    
    Parse netlink ext attribute to get the error message returned by
    the card. Code is partially take from libnl.
    
    We add netlink.h to the uapi include of tools. And we need to
    avoid include of userspace netlink header to have a successful
    build of sample so nlattr.h has a define to avoid
    the inclusion. Using a direct define could have been an issue
    as NLMSGERR_ATTR_MAX can change in the future.
    
    We also define SOL_NETLINK if not defined to avoid to have to
    copy socket.h for a fixed value.
    
    Signed-off-by: default avatarEric Leblond <eric@regit.org>
    Acked-by: default avatarAlexei Starovoitov <ast@kernel.org>
    Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
    bbf48c18