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| author | Christian Eggers <ceggers@arri.de> | 2020-10-12 11:35:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 10:10:52 +0100 |
| commit | 06bf6238fdb56b22e676cc2afe224ac9d13606d6 (patch) | |
| tree | 1d76cdd5ca31e605459cfebe91610c818cc258e0 /net | |
| parent | 3a4e7ac9fd56d8e34a274a9dad3dc67b564278f4 (diff) | |
| download | linux-stable-06bf6238fdb56b22e676cc2afe224ac9d13606d6.tar.gz linux-stable-06bf6238fdb56b22e676cc2afe224ac9d13606d6.tar.bz2 linux-stable-06bf6238fdb56b22e676cc2afe224ac9d13606d6.zip | |
socket: fix option SO_TIMESTAMPING_NEW
[ Upstream commit 59e611a566e7cd48cf54b6777a11fe3f9c2f9db5 ]
The comparison of optname with SO_TIMESTAMPING_NEW is wrong way around,
so SOCK_TSTAMP_NEW will first be set and than reset again. Additionally
move it out of the test for SOF_TIMESTAMPING_RX_SOFTWARE as this seems
unrelated.
This problem happens on 32 bit platforms were the libc has already
switched to struct timespec64 (from SO_TIMExxx_OLD to SO_TIMExxx_NEW
socket options). ptp4l complains with "missing timestamp on transmitted
peer delay request" because the wrong format is received (and
discarded).
Fixes: 9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Reviewed-by: Deepa Dinamani <deepa.kernel@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/sock.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 6c5c6b18eff4..dfe5d8047850 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1007,8 +1007,6 @@ set_sndbuf: __sock_set_timestamps(sk, valbool, true, true); break; case SO_TIMESTAMPING_NEW: - sock_set_flag(sk, SOCK_TSTAMP_NEW); - fallthrough; case SO_TIMESTAMPING_OLD: if (val & ~SOF_TIMESTAMPING_MASK) { ret = -EINVAL; @@ -1037,16 +1035,14 @@ set_sndbuf: } sk->sk_tsflags = val; + sock_valbool_flag(sk, SOCK_TSTAMP_NEW, optname == SO_TIMESTAMPING_NEW); + if (val & SOF_TIMESTAMPING_RX_SOFTWARE) sock_enable_timestamp(sk, SOCK_TIMESTAMPING_RX_SOFTWARE); - else { - if (optname == SO_TIMESTAMPING_NEW) - sock_reset_flag(sk, SOCK_TSTAMP_NEW); - + else sock_disable_timestamp(sk, (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE)); - } break; case SO_RCVLOWAT: |