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authorArnd Bergmann <arnd@arndb.de>2019-04-17 23:51:48 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-20 00:07:40 +0300
commitc7cbdbf29f488a19982cd9f4a109887f18028bbb (patch)
tree74b39321c14b93411eda0939683dc9b8b713717b /net/dccp
parent1ab839281cf72476988901a2606378d76530f99c (diff)
downloadlinux-c7cbdbf29f488a19982cd9f4a109887f18028bbb.tar.xz
net: rework SIOCGSTAMP ioctl handling
The SIOCGSTAMP/SIOCGSTAMPNS ioctl commands are implemented by many socket protocol handlers, and all of those end up calling the same sock_get_timestamp()/sock_get_timestampns() helper functions, which results in a lot of duplicate code. With the introduction of 64-bit time_t on 32-bit architectures, this gets worse, as we then need four different ioctl commands in each socket protocol implementation. To simplify that, let's add a new .gettstamp() operation in struct proto_ops, and move ioctl implementation into the common sock_ioctl()/compat_sock_ioctl_trans() functions that these all go through. We can reuse the sock_get_timestamp() implementation, but generalize it so it can deal with both native and compat mode, as well as timeval and timespec structures. Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/lkml/CAK8P3a038aDQQotzua_QtKGhq8O9n+rdiz2=WDCp82ys8eUT+A@mail.gmail.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp')
-rw-r--r--net/dccp/ipv4.c1
-rw-r--r--net/dccp/ipv6.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 26a21d97b6b0..004535e4c070 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -991,6 +991,7 @@ static const struct proto_ops inet_dccp_ops = {
/* FIXME: work on tcp_poll to rename it to inet_csk_poll */
.poll = dccp_poll,
.ioctl = inet_ioctl,
+ .gettstamp = sock_gettstamp,
/* FIXME: work on inet_listen to rename it to sock_common_listen */
.listen = inet_dccp_listen,
.shutdown = inet_shutdown,
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 57d84e9b7b6f..c4e4d1301062 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1075,6 +1075,7 @@ static const struct proto_ops inet6_dccp_ops = {
.getname = inet6_getname,
.poll = dccp_poll,
.ioctl = inet6_ioctl,
+ .gettstamp = sock_gettstamp,
.listen = inet_dccp_listen,
.shutdown = inet_shutdown,
.setsockopt = sock_common_setsockopt,