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    Subject[ti:ti-rt-linux-5.10.y 6650/6677] net/socket.c:861:5: error: 'SCM_RED_TIMESTAMPING' undeclared
    tree:   git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y
    head: db1fc3876dcb4c685815a7c7ce518724ffd9d8b8
    commit: b98f7ec080e0de442e0be84994ec8d26bdc39eeb [6650/6677] net: socket: Forward extra timestamp of received skb to user space
    config: parisc-buildonly-randconfig-r002-20210711 (attached as .config)
    compiler: hppa-linux-gcc (GCC) 9.3.0
    reproduce (this is a W=1 build):
    wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    chmod +x ~/bin/make.cross
    git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
    git fetch --no-tags ti ti-rt-linux-5.10.y
    git checkout b98f7ec080e0de442e0be84994ec8d26bdc39eeb
    # save the attached .config to linux build tree
    mkdir build_dir
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=parisc SHELL=/bin/bash

    If you fix the issue, kindly add following tag as appropriate
    Reported-by: kernel test robot <lkp@intel.com>

    All errors (new ones prefixed by >>):

    In file included from include/net/cls_cgroup.h:14,
    from net/socket.c:95:
    include/net/sock.h: In function 'sock_recv_redundant_info':
    include/net/sock.h:2525:29: error: 'SCM_REDUNDANT' undeclared (first use in this function)
    2525 | put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
    | ^~~~~~~~~~~~~
    include/net/sock.h:2525:29: note: each undeclared identifier is reported only once for each function it appears in
    net/socket.c: In function '__sock_recv_redinfo_timestamp':
    >> net/socket.c:861:5: error: 'SCM_RED_TIMESTAMPING' undeclared (first use in this function)
    861 | SCM_RED_TIMESTAMPING, sizeof(tss), &tss);
    | ^~~~~~~~~~~~~~~~~~~~
    net/socket.c: In function '__sys_getsockopt':
    net/socket.c:2174:6: warning: variable 'max_optlen' set but not used [-Wunused-but-set-variable]
    2174 | int max_optlen;
    | ^~~~~~~~~~


    vim +/SCM_RED_TIMESTAMPING +861 net/socket.c

    845
    846 void __sock_recv_redinfo_timestamp(struct msghdr *msg, struct sock *sk,
    847 struct sk_buff *skb)
    848 {
    849 struct scm_timestamping_internal tss;
    850 int empty = 1;
    851 struct skb_shared_hwtstamps *red_shhwtstamps =
    852 skb_redinfo_hwtstamps(skb);
    853
    854 if (red_shhwtstamps &&
    855 (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE) &&
    856 ktime_to_timespec64_cond(red_shhwtstamps->hwtstamp, tss.ts + 2))
    857 empty = 0;
    858
    859 if (!empty)
    860 put_cmsg(msg, SOL_SOCKET,
    > 861 SCM_RED_TIMESTAMPING, sizeof(tss), &tss);
    862 }
    863 EXPORT_SYMBOL_GPL(__sock_recv_redinfo_timestamp);
    864

    ---
    0-DAY CI Kernel Test Service, Intel Corporation
    https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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