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Date:   Wed, 17 Apr 2019 05:35:23 -0400
From:   Neil Horman <nhorman@tuxdriver.com>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Ralf Baechle <ralf@linux-mips.org>,
        Marcel Holtmann <marcel@holtmann.org>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        Oliver Hartkopp <socketcan@hartkopp.net>,
        Marc Kleine-Budde <mkl@pengutronix.de>,
        Gerrit Renker <gerrit@erg.abdn.ac.uk>,
        Alexander Aring <alex.aring@gmail.com>,
        Stefan Schmidt <stefan@datenfreihafen.org>,
        Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
        Vlad Yasevich <vyasevich@gmail.com>,
        Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
        Andrew Hendry <andrew.hendry@gmail.com>,
        Eric Dumazet <edumazet@google.com>,
        Willem de Bruijn <willemb@google.com>,
        Deepa Dinamani <deepa.kernel@gmail.com>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-hams@vger.kernel.org, linux-bluetooth@vger.kernel.org,
        linux-can@vger.kernel.org, dccp@vger.kernel.org,
        linux-wpan@vger.kernel.org, linux-sctp@vger.kernel.org,
        linux-x25@vger.kernel.org
Subject: Re: [PATCH net-next 1/3] net: rework SIOCGSTAMP ioctl handling
Message-ID: <20190417093523.GA15487@hmswarspite.think-freely.org>
References: <20190416203620.539628-1-arnd@arndb.de>
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On Tue, Apr 16, 2019 at 10:32:48PM +0200, Arnd Bergmann wrote:
> 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>
> Link: https://lore.kernel.org/lkml/CAK8P3a038aDQQotzua_QtKGhq8O9n+rdiz2=WDCp82ys8eUT+A@mail.gmail.com/
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> v2: reworked to not break sparc64 support
> ---
>  include/linux/net.h          |  2 ++
>  include/net/compat.h         |  3 --
>  include/net/sock.h           |  4 +--
>  net/appletalk/ddp.c          |  7 +----
>  net/atm/ioctl.c              | 16 ----------
>  net/atm/pvc.c                |  1 +
>  net/atm/svc.c                |  1 +
>  net/ax25/af_ax25.c           |  9 +-----
>  net/bluetooth/af_bluetooth.c |  8 -----
>  net/bluetooth/l2cap_sock.c   |  1 +
>  net/bluetooth/rfcomm/sock.c  |  1 +
>  net/bluetooth/sco.c          |  1 +
>  net/can/af_can.c             |  6 ----
>  net/can/bcm.c                |  1 +
>  net/can/raw.c                |  1 +
>  net/compat.c                 | 57 ------------------------------------
>  net/core/sock.c              | 51 +++++++++++++++++---------------
>  net/dccp/ipv4.c              |  1 +
>  net/dccp/ipv6.c              |  1 +
>  net/ieee802154/socket.c      |  6 ++--
>  net/ipv4/af_inet.c           |  9 ++----
>  net/ipv6/af_inet6.c          |  8 ++---
>  net/ipv6/raw.c               |  1 +
>  net/l2tp/l2tp_ip.c           |  1 +
>  net/l2tp/l2tp_ip6.c          |  1 +
>  net/netrom/af_netrom.c       | 14 +--------
>  net/packet/af_packet.c       |  7 ++---
>  net/qrtr/qrtr.c              |  4 +--
>  net/rose/af_rose.c           |  7 +----
>  net/sctp/ipv6.c              |  1 +
>  net/sctp/protocol.c          |  1 +
>  net/socket.c                 | 48 +++++++++---------------------
>  net/x25/af_x25.c             | 27 +----------------
>  33 files changed, 75 insertions(+), 232 deletions(-)
> 
> diff --git a/include/linux/net.h b/include/linux/net.h
> index c606c72311d0..50bf5206ead6 100644
> --- a/include/linux/net.h
> +++ b/include/linux/net.h
> @@ -161,6 +161,8 @@ struct proto_ops {
>  	int	 	(*compat_ioctl) (struct socket *sock, unsigned int cmd,
>  				      unsigned long arg);
>  #endif
> +	int		(*gettstamp) (struct socket *sock, void __user *userstamp,
> +				      bool timeval, bool time32);
>  	int		(*listen)    (struct socket *sock, int len);
>  	int		(*shutdown)  (struct socket *sock, int flags);
>  	int		(*setsockopt)(struct socket *sock, int level,
> diff --git a/include/net/compat.h b/include/net/compat.h
> index 4c6d75612b6c..f277653c7e17 100644
> --- a/include/net/compat.h
> +++ b/include/net/compat.h
> @@ -30,9 +30,6 @@ struct compat_cmsghdr {
>  	compat_int_t	cmsg_type;
>  };
>  
> -int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
> -int compat_sock_get_timestampns(struct sock *, struct timespec __user *);
> -
>  #else /* defined(CONFIG_COMPAT) */
>  /*
>   * To avoid compiler warnings:
> diff --git a/include/net/sock.h b/include/net/sock.h
> index 8de5ee258b93..d1fe105dcf42 100644
> --- a/include/net/sock.h
> +++ b/include/net/sock.h
> @@ -1607,6 +1607,8 @@ int sock_setsockopt(struct socket *sock, int level, int op,
>  
>  int sock_getsockopt(struct socket *sock, int level, int op,
>  		    char __user *optval, int __user *optlen);
> +int sock_gettstamp(struct socket *sock, void __user *userstamp,
> +		   bool timeval, bool time32);
>  struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size,
>  				    int noblock, int *errcode);
>  struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len,
> @@ -2493,8 +2495,6 @@ static inline bool sk_listener(const struct sock *sk)
>  }
>  
>  void sock_enable_timestamp(struct sock *sk, int flag);
> -int sock_get_timestamp(struct sock *, struct timeval __user *);
> -int sock_get_timestampns(struct sock *, struct timespec __user *);
>  int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, int level,
>  		       int type);
>  
> diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
> index 709d2542f729..e2511027d19b 100644
> --- a/net/appletalk/ddp.c
> +++ b/net/appletalk/ddp.c
> @@ -1806,12 +1806,6 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		rc = put_user(amount, (int __user *)argp);
>  		break;
>  	}
> -	case SIOCGSTAMP:
> -		rc = sock_get_timestamp(sk, argp);
> -		break;
> -	case SIOCGSTAMPNS:
> -		rc = sock_get_timestampns(sk, argp);
> -		break;
>  	/* Routing */
>  	case SIOCADDRT:
>  	case SIOCDELRT:
> @@ -1871,6 +1865,7 @@ static const struct proto_ops atalk_dgram_ops = {
>  	.getname	= atalk_getname,
>  	.poll		= datagram_poll,
>  	.ioctl		= atalk_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl	= atalk_compat_ioctl,
>  #endif
> diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
> index 2ff0e5e470e3..d955b683aa7c 100644
> --- a/net/atm/ioctl.c
> +++ b/net/atm/ioctl.c
> @@ -81,22 +81,6 @@ static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
>  				 (int __user *)argp) ? -EFAULT : 0;
>  		goto done;
>  	}
> -	case SIOCGSTAMP: /* borrowed from IP */
> -#ifdef CONFIG_COMPAT
> -		if (compat)
> -			error = compat_sock_get_timestamp(sk, argp);
> -		else
> -#endif
> -			error = sock_get_timestamp(sk, argp);
> -		goto done;
> -	case SIOCGSTAMPNS: /* borrowed from IP */
> -#ifdef CONFIG_COMPAT
> -		if (compat)
> -			error = compat_sock_get_timestampns(sk, argp);
> -		else
> -#endif
> -			error = sock_get_timestampns(sk, argp);
> -		goto done;
>  	case ATM_SETSC:
>  		net_warn_ratelimited("ATM_SETSC is obsolete; used by %s:%d\n",
>  				     current->comm, task_pid_nr(current));
> diff --git a/net/atm/pvc.c b/net/atm/pvc.c
> index 2cb10af16afc..02bd2a436bdf 100644
> --- a/net/atm/pvc.c
> +++ b/net/atm/pvc.c
> @@ -118,6 +118,7 @@ static const struct proto_ops pvc_proto_ops = {
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl = vcc_compat_ioctl,
>  #endif
> +	.gettstamp =	sock_gettstamp,
>  	.listen =	sock_no_listen,
>  	.shutdown =	pvc_shutdown,
>  	.setsockopt =	pvc_setsockopt,
> diff --git a/net/atm/svc.c b/net/atm/svc.c
> index 2f91b766ac42..908cbb8654f5 100644
> --- a/net/atm/svc.c
> +++ b/net/atm/svc.c
> @@ -641,6 +641,7 @@ static const struct proto_ops svc_proto_ops = {
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl =	svc_compat_ioctl,
>  #endif
> +	.gettstamp =	sock_gettstamp,
>  	.listen =	svc_listen,
>  	.shutdown =	svc_shutdown,
>  	.setsockopt =	svc_setsockopt,
> diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
> index 5d01edf8d819..449e7b7190c1 100644
> --- a/net/ax25/af_ax25.c
> +++ b/net/ax25/af_ax25.c
> @@ -1714,14 +1714,6 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		break;
>  	}
>  
> -	case SIOCGSTAMP:
> -		res = sock_get_timestamp(sk, argp);
> -		break;
> -
> -	case SIOCGSTAMPNS:
> -		res = sock_get_timestampns(sk, argp);
> -		break;
> -
>  	case SIOCAX25ADDUID:	/* Add a uid to the uid/call map table */
>  	case SIOCAX25DELUID:	/* Delete a uid from the uid/call map table */
>  	case SIOCAX25GETUID: {
> @@ -1950,6 +1942,7 @@ static const struct proto_ops ax25_proto_ops = {
>  	.getname	= ax25_getname,
>  	.poll		= datagram_poll,
>  	.ioctl		= ax25_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  	.listen		= ax25_listen,
>  	.shutdown	= ax25_shutdown,
>  	.setsockopt	= ax25_setsockopt,
> diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
> index 8d12198eaa94..94ddf19998c7 100644
> --- a/net/bluetooth/af_bluetooth.c
> +++ b/net/bluetooth/af_bluetooth.c
> @@ -521,14 +521,6 @@ int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		err = put_user(amount, (int __user *) arg);
>  		break;
>  
> -	case SIOCGSTAMP:
> -		err = sock_get_timestamp(sk, (struct timeval __user *) arg);
> -		break;
> -
> -	case SIOCGSTAMPNS:
> -		err = sock_get_timestampns(sk, (struct timespec __user *) arg);
> -		break;
> -
>  	default:
>  		err = -ENOIOCTLCMD;
>  		break;
> diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
> index a3a2cd55e23a..dcb14abebeba 100644
> --- a/net/bluetooth/l2cap_sock.c
> +++ b/net/bluetooth/l2cap_sock.c
> @@ -1655,6 +1655,7 @@ static const struct proto_ops l2cap_sock_ops = {
>  	.recvmsg	= l2cap_sock_recvmsg,
>  	.poll		= bt_sock_poll,
>  	.ioctl		= bt_sock_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  	.mmap		= sock_no_mmap,
>  	.socketpair	= sock_no_socketpair,
>  	.shutdown	= l2cap_sock_shutdown,
> diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
> index b1f49fcc0478..90bb53aa4bee 100644
> --- a/net/bluetooth/rfcomm/sock.c
> +++ b/net/bluetooth/rfcomm/sock.c
> @@ -1039,6 +1039,7 @@ static const struct proto_ops rfcomm_sock_ops = {
>  	.setsockopt	= rfcomm_sock_setsockopt,
>  	.getsockopt	= rfcomm_sock_getsockopt,
>  	.ioctl		= rfcomm_sock_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  	.poll		= bt_sock_poll,
>  	.socketpair	= sock_no_socketpair,
>  	.mmap		= sock_no_mmap
> diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
> index 9a580999ca57..d894406a5c3b 100644
> --- a/net/bluetooth/sco.c
> +++ b/net/bluetooth/sco.c
> @@ -1190,6 +1190,7 @@ static const struct proto_ops sco_sock_ops = {
>  	.recvmsg	= sco_sock_recvmsg,
>  	.poll		= bt_sock_poll,
>  	.ioctl		= bt_sock_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  	.mmap		= sock_no_mmap,
>  	.socketpair	= sock_no_socketpair,
>  	.shutdown	= sco_sock_shutdown,
> diff --git a/net/can/af_can.c b/net/can/af_can.c
> index 1684ba5b51eb..e8fd5dc1780a 100644
> --- a/net/can/af_can.c
> +++ b/net/can/af_can.c
> @@ -89,13 +89,7 @@ static atomic_t skbcounter = ATOMIC_INIT(0);
>  
>  int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  {
> -	struct sock *sk = sock->sk;
> -
>  	switch (cmd) {
> -
> -	case SIOCGSTAMP:
> -		return sock_get_timestamp(sk, (struct timeval __user *)arg);
> -
>  	default:
>  		return -ENOIOCTLCMD;
>  	}
> diff --git a/net/can/bcm.c b/net/can/bcm.c
> index 79bb8afa9c0c..a34ee52f19ea 100644
> --- a/net/can/bcm.c
> +++ b/net/can/bcm.c
> @@ -1689,6 +1689,7 @@ static const struct proto_ops bcm_ops = {
>  	.getname       = sock_no_getname,
>  	.poll          = datagram_poll,
>  	.ioctl         = can_ioctl,	/* use can_ioctl() from af_can.c */
> +	.gettstamp     = sock_gettstamp,
>  	.listen        = sock_no_listen,
>  	.shutdown      = sock_no_shutdown,
>  	.setsockopt    = sock_no_setsockopt,
> diff --git a/net/can/raw.c b/net/can/raw.c
> index c70207537488..afcbff063a67 100644
> --- a/net/can/raw.c
> +++ b/net/can/raw.c
> @@ -846,6 +846,7 @@ static const struct proto_ops raw_ops = {
>  	.getname       = raw_getname,
>  	.poll          = datagram_poll,
>  	.ioctl         = can_ioctl,	/* use can_ioctl() from af_can.c */
> +	.gettstamp     = sock_gettstamp,
>  	.listen        = sock_no_listen,
>  	.shutdown      = sock_no_shutdown,
>  	.setsockopt    = raw_setsockopt,
> diff --git a/net/compat.c b/net/compat.c
> index eeea5eb71639..a031bd333092 100644
> --- a/net/compat.c
> +++ b/net/compat.c
> @@ -395,63 +395,6 @@ COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
>  	return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
>  }
>  
> -int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
> -{
> -	struct compat_timeval __user *ctv;
> -	int err;
> -	struct timeval tv;
> -
> -	if (COMPAT_USE_64BIT_TIME)
> -		return sock_get_timestamp(sk, userstamp);
> -
> -	ctv = (struct compat_timeval __user *) userstamp;
> -	err = -ENOENT;
> -	sock_enable_timestamp(sk, SOCK_TIMESTAMP);
> -	tv = ktime_to_timeval(sock_read_timestamp(sk));
> -
> -	if (tv.tv_sec == -1)
> -		return err;
> -	if (tv.tv_sec == 0) {
> -		ktime_t kt = ktime_get_real();
> -		sock_write_timestamp(sk, kt);
> -		tv = ktime_to_timeval(kt);
> -	}
> -	err = 0;
> -	if (put_user(tv.tv_sec, &ctv->tv_sec) ||
> -			put_user(tv.tv_usec, &ctv->tv_usec))
> -		err = -EFAULT;
> -	return err;
> -}
> -EXPORT_SYMBOL(compat_sock_get_timestamp);
> -
> -int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
> -{
> -	struct compat_timespec __user *ctv;
> -	int err;
> -	struct timespec ts;
> -
> -	if (COMPAT_USE_64BIT_TIME)
> -		return sock_get_timestampns (sk, userstamp);
> -
> -	ctv = (struct compat_timespec __user *) userstamp;
> -	err = -ENOENT;
> -	sock_enable_timestamp(sk, SOCK_TIMESTAMP);
> -	ts = ktime_to_timespec(sock_read_timestamp(sk));
> -	if (ts.tv_sec == -1)
> -		return err;
> -	if (ts.tv_sec == 0) {
> -		ktime_t kt = ktime_get_real();
> -		sock_write_timestamp(sk, kt);
> -		ts = ktime_to_timespec(kt);
> -	}
> -	err = 0;
> -	if (put_user(ts.tv_sec, &ctv->tv_sec) ||
> -			put_user(ts.tv_nsec, &ctv->tv_nsec))
> -		err = -EFAULT;
> -	return err;
> -}
> -EXPORT_SYMBOL(compat_sock_get_timestampns);
> -
>  static int __compat_sys_getsockopt(int fd, int level, int optname,
>  				   char __user *optval,
>  				   int __user *optlen)
> diff --git a/net/core/sock.c b/net/core/sock.c
> index 782343bb925b..dc7c31d66200 100644
> --- a/net/core/sock.c
> +++ b/net/core/sock.c
> @@ -2977,39 +2977,44 @@ bool lock_sock_fast(struct sock *sk)
>  }
>  EXPORT_SYMBOL(lock_sock_fast);
>  
> -int sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
> +int sock_gettstamp(struct socket *sock, void __user *userstamp,
> +		   bool timeval, bool time32)
>  {
> -	struct timeval tv;
> +	struct sock *sk = sock->sk;
> +	struct timespec64 ts;
>  
>  	sock_enable_timestamp(sk, SOCK_TIMESTAMP);
> -	tv = ktime_to_timeval(sock_read_timestamp(sk));
> -	if (tv.tv_sec == -1)
> +	ts = ktime_to_timespec64(sk->sk_stamp);
> +	if (ts.tv_sec == -1)
>  		return -ENOENT;
> -	if (tv.tv_sec == 0) {
> +	if (ts.tv_sec == 0) {
>  		ktime_t kt = ktime_get_real();
> -		sock_write_timestamp(sk, kt);
> -		tv = ktime_to_timeval(kt);
> +		sock_write_timestamp(sk, kt);;
> +		ts = ktime_to_timespec64(kt);
>  	}
> -	return copy_to_user(userstamp, &tv, sizeof(tv)) ? -EFAULT : 0;
> -}
> -EXPORT_SYMBOL(sock_get_timestamp);
>  
> -int sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
> -{
> -	struct timespec ts;
> +	if (timeval)
> +		ts.tv_nsec /= 1000;
>  
> -	sock_enable_timestamp(sk, SOCK_TIMESTAMP);
> -	ts = ktime_to_timespec(sock_read_timestamp(sk));
> -	if (ts.tv_sec == -1)
> -		return -ENOENT;
> -	if (ts.tv_sec == 0) {
> -		ktime_t kt = ktime_get_real();
> -		sock_write_timestamp(sk, kt);
> -		ts = ktime_to_timespec(sk->sk_stamp);
> +#ifdef CONFIG_COMPAT_32BIT_TIME
> +	if (time32)
> +		return put_old_timespec32(&ts, userstamp);
> +#endif
> +#ifdef CONFIG_SPARC64
> +	/* beware of padding in sparc64 timeval */
> +	if (timeval && !in_compat_syscall()) {
> +		struct __kernel_old_timeval __user tv = {
> +			.tv_sec = ts.tv_sec;
> +			.tv_usec = ts.tv_nsec;
> +		};
> +		if (copy_to_user(userstamp, &tv, sizeof(tv))
> +			return -EFAULT;
> +		return 0;
>  	}
> -	return copy_to_user(userstamp, &ts, sizeof(ts)) ? -EFAULT : 0;
> +#endif
> +	return put_timespec64(&ts, userstamp);
>  }
> -EXPORT_SYMBOL(sock_get_timestampns);
> +EXPORT_SYMBOL(sock_gettstamp);
>  
>  void sock_enable_timestamp(struct sock *sk, int flag)
>  {
> 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,
> diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
> index bc6b912603f1..ce2dfb997537 100644
> --- a/net/ieee802154/socket.c
> +++ b/net/ieee802154/socket.c
> @@ -164,10 +164,6 @@ static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
>  	struct sock *sk = sock->sk;
>  
>  	switch (cmd) {
> -	case SIOCGSTAMP:
> -		return sock_get_timestamp(sk, (struct timeval __user *)arg);
> -	case SIOCGSTAMPNS:
> -		return sock_get_timestampns(sk, (struct timespec __user *)arg);
>  	case SIOCGIFADDR:
>  	case SIOCSIFADDR:
>  		return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
> @@ -426,6 +422,7 @@ static const struct proto_ops ieee802154_raw_ops = {
>  	.getname	   = sock_no_getname,
>  	.poll		   = datagram_poll,
>  	.ioctl		   = ieee802154_sock_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = sock_no_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> @@ -988,6 +985,7 @@ static const struct proto_ops ieee802154_dgram_ops = {
>  	.getname	   = sock_no_getname,
>  	.poll		   = datagram_poll,
>  	.ioctl		   = ieee802154_sock_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = sock_no_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
> index eab3ebde981e..0f46d87715aa 100644
> --- a/net/ipv4/af_inet.c
> +++ b/net/ipv4/af_inet.c
> @@ -911,12 +911,6 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  	struct rtentry rt;
>  
>  	switch (cmd) {
> -	case SIOCGSTAMP:
> -		err = sock_get_timestamp(sk, (struct timeval __user *)arg);
> -		break;
> -	case SIOCGSTAMPNS:
> -		err = sock_get_timestampns(sk, (struct timespec __user *)arg);
> -		break;
>  	case SIOCADDRT:
>  	case SIOCDELRT:
>  		if (copy_from_user(&rt, p, sizeof(struct rtentry)))
> @@ -988,6 +982,7 @@ const struct proto_ops inet_stream_ops = {
>  	.getname	   = inet_getname,
>  	.poll		   = tcp_poll,
>  	.ioctl		   = inet_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = inet_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> @@ -1023,6 +1018,7 @@ const struct proto_ops inet_dgram_ops = {
>  	.getname	   = inet_getname,
>  	.poll		   = udp_poll,
>  	.ioctl		   = inet_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> @@ -1055,6 +1051,7 @@ static const struct proto_ops inet_sockraw_ops = {
>  	.getname	   = inet_getname,
>  	.poll		   = datagram_poll,
>  	.ioctl		   = inet_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
> index 2f45d2a3e3a3..6d1133fd89f6 100644
> --- a/net/ipv6/af_inet6.c
> +++ b/net/ipv6/af_inet6.c
> @@ -546,12 +546,6 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  	struct net *net = sock_net(sk);
>  
>  	switch (cmd) {
> -	case SIOCGSTAMP:
> -		return sock_get_timestamp(sk, (struct timeval __user *)arg);
> -
> -	case SIOCGSTAMPNS:
> -		return sock_get_timestampns(sk, (struct timespec __user *)arg);
> -
>  	case SIOCADDRT:
>  	case SIOCDELRT:
>  
> @@ -584,6 +578,7 @@ const struct proto_ops inet6_stream_ops = {
>  	.getname	   = inet6_getname,
>  	.poll		   = tcp_poll,			/* ok		*/
>  	.ioctl		   = inet6_ioctl,		/* must change  */
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = inet_listen,		/* ok		*/
>  	.shutdown	   = inet_shutdown,		/* ok		*/
>  	.setsockopt	   = sock_common_setsockopt,	/* ok		*/
> @@ -617,6 +612,7 @@ const struct proto_ops inet6_dgram_ops = {
>  	.getname	   = inet6_getname,
>  	.poll		   = udp_poll,			/* ok		*/
>  	.ioctl		   = inet6_ioctl,		/* must change  */
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,		/* ok		*/
>  	.shutdown	   = inet_shutdown,		/* ok		*/
>  	.setsockopt	   = sock_common_setsockopt,	/* ok		*/
> diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
> index 5a426226c762..84dbe21b71e5 100644
> --- a/net/ipv6/raw.c
> +++ b/net/ipv6/raw.c
> @@ -1356,6 +1356,7 @@ const struct proto_ops inet6_sockraw_ops = {
>  	.getname	   = inet6_getname,
>  	.poll		   = datagram_poll,		/* ok		*/
>  	.ioctl		   = inet6_ioctl,		/* must change  */
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,		/* ok		*/
>  	.shutdown	   = inet_shutdown,		/* ok		*/
>  	.setsockopt	   = sock_common_setsockopt,	/* ok		*/
> diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
> index d4c60523c549..2cac910c1cd4 100644
> --- a/net/l2tp/l2tp_ip.c
> +++ b/net/l2tp/l2tp_ip.c
> @@ -618,6 +618,7 @@ static const struct proto_ops l2tp_ip_ops = {
>  	.getname	   = l2tp_ip_getname,
>  	.poll		   = datagram_poll,
>  	.ioctl		   = inet_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
> index 37a69df17cab..4ec546cc1dd6 100644
> --- a/net/l2tp/l2tp_ip6.c
> +++ b/net/l2tp/l2tp_ip6.c
> @@ -752,6 +752,7 @@ static const struct proto_ops l2tp_ip6_ops = {
>  	.getname	   = l2tp_ip6_getname,
>  	.poll		   = datagram_poll,
>  	.ioctl		   = inet6_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sock_no_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
> index 1d3144d19903..4e97bbbf1916 100644
> --- a/net/netrom/af_netrom.c
> +++ b/net/netrom/af_netrom.c
> @@ -1199,7 +1199,6 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  {
>  	struct sock *sk = sock->sk;
>  	void __user *argp = (void __user *)arg;
> -	int ret;
>  
>  	switch (cmd) {
>  	case TIOCOUTQ: {
> @@ -1225,18 +1224,6 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		return put_user(amount, (int __user *)argp);
>  	}
>  
> -	case SIOCGSTAMP:
> -		lock_sock(sk);
> -		ret = sock_get_timestamp(sk, argp);
> -		release_sock(sk);
> -		return ret;
> -
> -	case SIOCGSTAMPNS:
> -		lock_sock(sk);
> -		ret = sock_get_timestampns(sk, argp);
> -		release_sock(sk);
> -		return ret;
> -
>  	case SIOCGIFADDR:
>  	case SIOCSIFADDR:
>  	case SIOCGIFDSTADDR:
> @@ -1362,6 +1349,7 @@ static const struct proto_ops nr_proto_ops = {
>  	.getname	=	nr_getname,
>  	.poll		=	datagram_poll,
>  	.ioctl		=	nr_ioctl,
> +	.gettstamp	=	sock_gettstamp,
>  	.listen		=	nr_listen,
>  	.shutdown	=	sock_no_shutdown,
>  	.setsockopt	=	nr_setsockopt,
> diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
> index 9419c5cf4de5..b012dc5ffb6e 100644
> --- a/net/packet/af_packet.c
> +++ b/net/packet/af_packet.c
> @@ -4077,11 +4077,6 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd,
>  		spin_unlock_bh(&sk->sk_receive_queue.lock);
>  		return put_user(amount, (int __user *)arg);
>  	}
> -	case SIOCGSTAMP:
> -		return sock_get_timestamp(sk, (struct timeval __user *)arg);
> -	case SIOCGSTAMPNS:
> -		return sock_get_timestampns(sk, (struct timespec __user *)arg);
> -
>  #ifdef CONFIG_INET
>  	case SIOCADDRT:
>  	case SIOCDELRT:
> @@ -4457,6 +4452,7 @@ static const struct proto_ops packet_ops_spkt = {
>  	.getname =	packet_getname_spkt,
>  	.poll =		datagram_poll,
>  	.ioctl =	packet_ioctl,
> +	.gettstamp =	sock_gettstamp,
>  	.listen =	sock_no_listen,
>  	.shutdown =	sock_no_shutdown,
>  	.setsockopt =	sock_no_setsockopt,
> @@ -4478,6 +4474,7 @@ static const struct proto_ops packet_ops = {
>  	.getname =	packet_getname,
>  	.poll =		packet_poll,
>  	.ioctl =	packet_ioctl,
> +	.gettstamp =	sock_gettstamp,
>  	.listen =	sock_no_listen,
>  	.shutdown =	sock_no_shutdown,
>  	.setsockopt =	packet_setsockopt,
> diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
> index b37e6e0a1026..7c5e8292cc0a 100644
> --- a/net/qrtr/qrtr.c
> +++ b/net/qrtr/qrtr.c
> @@ -968,9 +968,6 @@ static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  			break;
>  		}
>  		break;
> -	case SIOCGSTAMP:
> -		rc = sock_get_timestamp(sk, argp);
> -		break;
>  	case SIOCADDRT:
>  	case SIOCDELRT:
>  	case SIOCSIFADDR:
> @@ -1033,6 +1030,7 @@ static const struct proto_ops qrtr_proto_ops = {
>  	.recvmsg	= qrtr_recvmsg,
>  	.getname	= qrtr_getname,
>  	.ioctl		= qrtr_ioctl,
> +	.gettstamp	= sock_gettstamp,
>  	.poll		= datagram_poll,
>  	.shutdown	= sock_no_shutdown,
>  	.setsockopt	= sock_no_setsockopt,
> diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
> index c96f63ffe31e..e274bc6e1458 100644
> --- a/net/rose/af_rose.c
> +++ b/net/rose/af_rose.c
> @@ -1301,12 +1301,6 @@ static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		return put_user(amount, (unsigned int __user *) argp);
>  	}
>  
> -	case SIOCGSTAMP:
> -		return sock_get_timestamp(sk, (struct timeval __user *) argp);
> -
> -	case SIOCGSTAMPNS:
> -		return sock_get_timestampns(sk, (struct timespec __user *) argp);
> -
>  	case SIOCGIFADDR:
>  	case SIOCSIFADDR:
>  	case SIOCGIFDSTADDR:
> @@ -1474,6 +1468,7 @@ static const struct proto_ops rose_proto_ops = {
>  	.getname	=	rose_getname,
>  	.poll		=	datagram_poll,
>  	.ioctl		=	rose_ioctl,
> +	.gettstamp	=	sock_gettstamp,
>  	.listen		=	rose_listen,
>  	.shutdown	=	sock_no_shutdown,
>  	.setsockopt	=	rose_setsockopt,
> diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
> index 6200cd2b4b99..188c47eb206e 100644
> --- a/net/sctp/ipv6.c
> +++ b/net/sctp/ipv6.c
> @@ -1030,6 +1030,7 @@ static const struct proto_ops inet6_seqpacket_ops = {
>  	.getname	   = sctp_getname,
>  	.poll		   = sctp_poll,
>  	.ioctl		   = inet6_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sctp_inet_listen,
>  	.shutdown	   = inet_shutdown,
>  	.setsockopt	   = sock_common_setsockopt,
> diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
> index 951afdeea5e9..f0631bf486b6 100644
> --- a/net/sctp/protocol.c
> +++ b/net/sctp/protocol.c
> @@ -1026,6 +1026,7 @@ static const struct proto_ops inet_seqpacket_ops = {
>  	.getname	   = inet_getname,	/* Semantics are different.  */
>  	.poll		   = sctp_poll,
>  	.ioctl		   = inet_ioctl,
> +	.gettstamp	   = sock_gettstamp,
>  	.listen		   = sctp_inet_listen,
>  	.shutdown	   = inet_shutdown,	/* Looks harmless.  */
>  	.setsockopt	   = sock_common_setsockopt, /* IP_SOL IP_OPTION is a problem */
> diff --git a/net/socket.c b/net/socket.c
> index 8255f5bda0aa..ab624d42ead5 100644
> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -1164,6 +1164,15 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
>  
>  			err = open_related_ns(&net->ns, get_net_ns);
>  			break;
> +		case SIOCGSTAMP:
> +		case SIOCGSTAMPNS:
> +			if (!sock->ops->gettstamp) {
> +				err = -ENOIOCTLCMD;
> +				break;
> +			}
> +			err = sock->ops->gettstamp(sock, argp,
> +						   cmd == SIOCGSTAMP, false);
> +			break;
>  		default:
>  			err = sock_do_ioctl(net, sock, cmd, arg);
>  			break;
> @@ -2916,38 +2925,6 @@ void socket_seq_show(struct seq_file *seq)
>  #endif				/* CONFIG_PROC_FS */
>  
>  #ifdef CONFIG_COMPAT
> -static int do_siocgstamp(struct net *net, struct socket *sock,
> -			 unsigned int cmd, void __user *up)
> -{
> -	mm_segment_t old_fs = get_fs();
> -	struct timeval ktv;
> -	int err;
> -
> -	set_fs(KERNEL_DS);
> -	err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv);
> -	set_fs(old_fs);
> -	if (!err)
> -		err = compat_put_timeval(&ktv, up);
> -
> -	return err;
> -}
> -
> -static int do_siocgstampns(struct net *net, struct socket *sock,
> -			   unsigned int cmd, void __user *up)
> -{
> -	mm_segment_t old_fs = get_fs();
> -	struct timespec kts;
> -	int err;
> -
> -	set_fs(KERNEL_DS);
> -	err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts);
> -	set_fs(old_fs);
> -	if (!err)
> -		err = compat_put_timespec(&kts, up);
> -
> -	return err;
> -}
> -
>  static int compat_dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
>  {
>  	struct compat_ifconf ifc32;
> @@ -3348,9 +3325,12 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
>  	case SIOCDELRT:
>  		return routing_ioctl(net, sock, cmd, argp);
>  	case SIOCGSTAMP:
> -		return do_siocgstamp(net, sock, cmd, argp);
>  	case SIOCGSTAMPNS:
> -		return do_siocgstampns(net, sock, cmd, argp);
> +		if (!sock->ops->gettstamp)
> +			return -ENOIOCTLCMD;
> +		return sock->ops->gettstamp(sock, argp, cmd == SIOCGSTAMP,
> +					    !COMPAT_USE_64BIT_TIME);
> +
>  	case SIOCBONDSLAVEINFOQUERY:
>  	case SIOCBONDINFOQUERY:
>  	case SIOCSHWTSTAMP:
> diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
> index 20a511398389..0ea48a52ce79 100644
> --- a/net/x25/af_x25.c
> +++ b/net/x25/af_x25.c
> @@ -1398,18 +1398,6 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
>  		break;
>  	}
>  
> -	case SIOCGSTAMP:
> -		rc = -EINVAL;
> -		if (sk)
> -			rc = sock_get_timestamp(sk,
> -						(struct timeval __user *)argp);
> -		break;
> -	case SIOCGSTAMPNS:
> -		rc = -EINVAL;
> -		if (sk)
> -			rc = sock_get_timestampns(sk,
> -					(struct timespec __user *)argp);
> -		break;
>  	case SIOCGIFADDR:
>  	case SIOCSIFADDR:
>  	case SIOCGIFDSTADDR:
> @@ -1681,8 +1669,6 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
>  				unsigned long arg)
>  {
>  	void __user *argp = compat_ptr(arg);
> -	struct sock *sk = sock->sk;
> -
>  	int rc = -ENOIOCTLCMD;
>  
>  	switch(cmd) {
> @@ -1690,18 +1676,6 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
>  	case TIOCINQ:
>  		rc = x25_ioctl(sock, cmd, (unsigned long)argp);
>  		break;
> -	case SIOCGSTAMP:
> -		rc = -EINVAL;
> -		if (sk)
> -			rc = compat_sock_get_timestamp(sk,
> -					(struct timeval __user*)argp);
> -		break;
> -	case SIOCGSTAMPNS:
> -		rc = -EINVAL;
> -		if (sk)
> -			rc = compat_sock_get_timestampns(sk,
> -					(struct timespec __user*)argp);
> -		break;
>  	case SIOCGIFADDR:
>  	case SIOCSIFADDR:
>  	case SIOCGIFDSTADDR:
> @@ -1765,6 +1739,7 @@ static const struct proto_ops x25_proto_ops = {
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl = compat_x25_ioctl,
>  #endif
> +	.gettstamp =	sock_gettstamp,
>  	.listen =	x25_listen,
>  	.shutdown =	sock_no_shutdown,
>  	.setsockopt =	x25_setsockopt,
> -- 
> 2.20.0
> 
> 
For the sctp bits
Acked-by: Neil Horman <nhorman@tuxdriver.com>