In order to remove the 'struct timespec' definition and the
timespec64_to_timespec() helper function, change over the in-kernel
definition of 'struct scm_timestamping' to use the __kernel_old_timespec
replacement and open-code the assignment.

Signed-off-by: Arnd Bergmann <[email protected]>
---
 include/uapi/linux/errqueue.h | 7 +++++++
 net/core/scm.c                | 6 ++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/errqueue.h b/include/uapi/linux/errqueue.h
index 28491dac074b..0cca19670fd2 100644
--- a/include/uapi/linux/errqueue.h
+++ b/include/uapi/linux/errqueue.h
@@ -37,9 +37,16 @@ struct sock_extended_err {
  *     The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
  *     communicate network timestamps by passing this struct in a cmsg with
  *     recvmsg(). See Documentation/networking/timestamping.txt for details.
+ *     User space sees a timespec definition that matches either
+ *     __kernel_timespec or __kernel_old_timespec, in the kernel we
+ *     require two structure definitions to provide both.
  */
 struct scm_timestamping {
+#ifdef __KERNEL__
+       struct __kernel_old_timespec ts[3];
+#else
        struct timespec ts[3];
+#endif
 };
 
 struct scm_timestamping64 {
diff --git a/net/core/scm.c b/net/core/scm.c
index 31a38239c92f..dc6fed1f221c 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -268,8 +268,10 @@ void put_cmsg_scm_timestamping(struct msghdr *msg, struct 
scm_timestamping_inter
        struct scm_timestamping tss;
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(tss.ts); i++)
-               tss.ts[i] = timespec64_to_timespec(tss_internal->ts[i]);
+       for (i = 0; i < ARRAY_SIZE(tss.ts); i++) {
+               tss.ts[i].tv_sec = tss_internal->ts[i].tv_sec;
+               tss.ts[i].tv_nsec = tss_internal->ts[i].tv_nsec;
+       }
 
        put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPING_OLD, sizeof(tss), &tss);
 }
-- 
2.20.0

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