lkml.org 
[lkml]   [2019]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 13/23] y2038: socket: remove timespec reference in timestamping
Date
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 <arnd@arndb.de>
---
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
\
 
 \ /
  Last update: 2019-11-08 22:16    [W:0.202 / U:10.728 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site