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Message-Id: <20181124022035.17519-8-deepa.kernel@gmail.com>
Date: Fri, 23 Nov 2018 18:20:34 -0800
From: Deepa Dinamani <deepa.kernel@...il.com>
To: davem@...emloft.net, linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org, viro@...iv.linux.org.uk, arnd@...db.de,
y2038@...ts.linaro.org, jejb@...isc-linux.org, ralf@...ux-mips.org,
rth@...ddle.net, linux-alpha@...r.kernel.org,
linux-mips@...ux-mips.org, linux-parisc@...r.kernel.org,
linux-rdma@...r.kernel.org, sparclinux@...r.kernel.org
Subject: [PATCH 7/8] socket: Add SO_TIMESTAMP[NS]_NEW
Add SO_TIMESTAMP_NEW and SO_TIMESTAMPNS_NEW variants of
socket timestamp options.
These are the y2038 safe versions of the SO_TIMESTAMP_OLD
and SO_TIMESTAMPNS_OLD for all architectures.
Note that the format of scm_timestamping.ts[0] is not changed
in this patch.
Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
Cc: jejb@...isc-linux.org
Cc: ralf@...ux-mips.org
Cc: rth@...ddle.net
Cc: linux-alpha@...r.kernel.org
Cc: linux-mips@...ux-mips.org
Cc: linux-parisc@...r.kernel.org
Cc: linux-rdma@...r.kernel.org
Cc: netdev@...r.kernel.org
Cc: sparclinux@...r.kernel.org
---
arch/alpha/include/uapi/asm/socket.h | 15 ++++++-
arch/mips/include/uapi/asm/socket.h | 14 +++++-
arch/parisc/include/uapi/asm/socket.h | 14 +++++-
arch/sparc/include/uapi/asm/socket.h | 14 +++++-
include/linux/skbuff.h | 18 ++++++++
include/net/sock.h | 1 +
include/uapi/asm-generic/socket.h | 15 ++++++-
net/core/sock.c | 18 ++++++++
net/ipv4/tcp.c | 61 +++++++++++++++++++--------
net/rds/af_rds.c | 8 +++-
net/rds/recv.c | 16 ++++++-
net/socket.c | 47 +++++++++++++++------
12 files changed, 197 insertions(+), 44 deletions(-)
diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h
index 00e45c80e574..352e3dc0b3d9 100644
--- a/arch/alpha/include/uapi/asm/socket.h
+++ b/arch/alpha/include/uapi/asm/socket.h
@@ -3,6 +3,7 @@
#define _UAPI_ASM_SOCKET_H
#include <asm/sockios.h>
+#include <asm/bitsperlong.h>
/* For setsockopt(2) */
/*
@@ -110,12 +111,22 @@
#define SO_TIMESTAMP_OLD 29
#define SO_TIMESTAMPNS_OLD 35
+
#define SO_TIMESTAMPING_OLD 37
+#define SO_TIMESTAMP_NEW 62
+#define SO_TIMESTAMPNS_NEW 63
+
#if !defined(__KERNEL__)
-#define SO_TIMESTAMP SO_TIMESTAMP_OLD
-#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#if __BITS_PER_LONG == 64
+#define SO_TIMESTAMP SO_TIMESTAMP_OLD
+#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#else
+#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)
+#define SO_TIMESTAMPNS (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPNS_OLD : SO_TIMESTAMPNS_NEW)
+#endif
+
#define SO_TIMESTAMPING SO_TIMESTAMPING_OLD
#define SCM_TIMESTAMP SO_TIMESTAMP
diff --git a/arch/mips/include/uapi/asm/socket.h b/arch/mips/include/uapi/asm/socket.h
index b9553f770346..d1752e3f1248 100644
--- a/arch/mips/include/uapi/asm/socket.h
+++ b/arch/mips/include/uapi/asm/socket.h
@@ -11,6 +11,7 @@
#define _UAPI_ASM_SOCKET_H
#include <asm/sockios.h>
+#include <asm/bitsperlong.h>
/*
* For setsockopt(2)
@@ -123,10 +124,19 @@
#define SO_TIMESTAMPNS_OLD 35
#define SO_TIMESTAMPING_OLD 37
+#define SO_TIMESTAMP_NEW 62
+#define SO_TIMESTAMPNS_NEW 63
+
#if !defined(__KERNEL__)
-#define SO_TIMESTAMP SO_TIMESTAMP_OLD
-#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#if __BITS_PER_LONG == 64
+#define SO_TIMESTAMP SO_TIMESTAMP_OLD
+#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#else
+#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)
+#define SO_TIMESTAMPNS (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPNS_OLD : SO_TIMESTAMPNS_NEW)
+#endif
+
#define SO_TIMESTAMPING SO_TIMESTAMPING_OLD
#define SCM_TIMESTAMP SO_TIMESTAMP
diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h
index 37cdfe64bb27..0a45b668abd1 100644
--- a/arch/parisc/include/uapi/asm/socket.h
+++ b/arch/parisc/include/uapi/asm/socket.h
@@ -3,6 +3,7 @@
#define _UAPI_ASM_SOCKET_H
#include <asm/sockios.h>
+#include <asm/bitsperlong.h>
/* For setsockopt(2) */
#define SOL_SOCKET 0xffff
@@ -104,10 +105,19 @@
#define SO_TIMESTAMPNS_OLD 0x4013
#define SO_TIMESTAMPING_OLD 0x4020
+#define SO_TIMESTAMP_NEW 0x4037
+#define SO_TIMESTAMPNS_NEW 0x4038
+
#if !defined(__KERNEL__)
-#define SO_TIMESTAMP SO_TIMESTAMP_OLD
-#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#if __BITS_PER_LONG == 64
+#define SO_TIMESTAMP SO_TIMESTAMP_OLD
+#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#else
+#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)
+#define SO_TIMESTAMPNS (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPNS_OLD : SO_TIMESTAMPNS_NEW)
+#endif
+
#define SO_TIMESTAMPING SO_TIMESTAMPING_OLD
#define SCM_TIMESTAMP SO_TIMESTAMP
diff --git a/arch/sparc/include/uapi/asm/socket.h b/arch/sparc/include/uapi/asm/socket.h
index ca573641fc6c..dc8527cae5a7 100644
--- a/arch/sparc/include/uapi/asm/socket.h
+++ b/arch/sparc/include/uapi/asm/socket.h
@@ -3,6 +3,7 @@
#define _ASM_SOCKET_H
#include <asm/sockios.h>
+#include <asm/bitsperlong.h>
/* For setsockopt(2) */
#define SOL_SOCKET 0xffff
@@ -105,10 +106,19 @@
#define SO_TIMESTAMPNS_OLD 0x0021
#define SO_TIMESTAMPING_OLD 0x0023
+#define SO_TIMESTAMP_NEW 0x0040
+#define SO_TIMESTAMPNS_NEW 0x0041
+
#if !defined(__KERNEL__)
-#define SO_TIMESTAMP SO_TIMESTAMP_OLD
-#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#if __BITS_PER_LONG == 64
+#define SO_TIMESTAMP SO_TIMESTAMP_OLD
+#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#else
+#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)
+#define SO_TIMESTAMPNS (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPNS_OLD : SO_TIMESTAMPNS_NEW)
+#endif
+
#define SO_TIMESTAMPING SO_TIMESTAMPING_OLD
#define SCM_TIMESTAMP SO_TIMESTAMP
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e2dc01330cb1..1e42c4a2209d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3465,12 +3465,30 @@ static inline void skb_get_timestamp(const struct sk_buff *skb,
*stamp = ns_to_kernel_old_timeval(skb->tstamp);
}
+static inline void skb_get_new_timestamp(const struct sk_buff *skb,
+ struct sock_timeval *stamp)
+{
+ struct timespec64 ts = ktime_to_timespec64(skb->tstamp);
+
+ stamp->tv_sec = ts.tv_sec;
+ stamp->tv_usec = ts.tv_nsec / 1000;
+}
+
static inline void skb_get_timestampns(const struct sk_buff *skb,
struct timespec *stamp)
{
*stamp = ktime_to_timespec(skb->tstamp);
}
+static inline void skb_get_new_timestampns(const struct sk_buff *skb,
+ struct __kernel_timespec *stamp)
+{
+ struct timespec64 ts = ktime_to_timespec64(skb->tstamp);
+
+ stamp->tv_sec = ts.tv_sec;
+ stamp->tv_nsec = ts.tv_nsec;
+}
+
static inline void __net_timestamp(struct sk_buff *skb)
{
skb->tstamp = ktime_get_real();
diff --git a/include/net/sock.h b/include/net/sock.h
index 8143c4c1a49d..9edf909dc176 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -801,6 +801,7 @@ enum sock_flags {
SOCK_RCU_FREE, /* wait rcu grace period in sk_destruct() */
SOCK_TXTIME,
SOCK_XDP, /* XDP is attached */
+ SOCK_TSTAMP_NEW, /* Indicates 64 bit timestamps always */
};
#define SK_FLAGS_TIMESTAMP ((1UL << SOCK_TIMESTAMP) | (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE))
diff --git a/include/uapi/asm-generic/socket.h b/include/uapi/asm-generic/socket.h
index dc704e41203d..0b0fae6b57a9 100644
--- a/include/uapi/asm-generic/socket.h
+++ b/include/uapi/asm-generic/socket.h
@@ -3,6 +3,7 @@
#define __ASM_GENERIC_SOCKET_H
#include <asm/sockios.h>
+#include <asm/bitsperlong.h>
/* For setsockopt(2) */
#define SOL_SOCKET 1
@@ -107,10 +108,20 @@
#define SO_TIMESTAMPNS_OLD 35
#define SO_TIMESTAMPING_OLD 37
+#define SO_TIMESTAMP_NEW 62
+#define SO_TIMESTAMPNS_NEW 63
+
#if !defined(__KERNEL__)
-#define SO_TIMESTAMP SO_TIMESTAMP_OLD
-#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#if __BITS_PER_LONG == 64 || (defined(__x86_64__) && defined(__ILP32__))
+/* on 64-bit and x32, avoid the ?: operator */
+#define SO_TIMESTAMP SO_TIMESTAMP_OLD
+#define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD
+#else
+#define SO_TIMESTAMP (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMP_OLD : SO_TIMESTAMP_NEW)
+#define SO_TIMESTAMPNS (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPNS_OLD : SO_TIMESTAMPNS_NEW)
+#endif
+
#define SO_TIMESTAMPING SO_TIMESTAMPING_OLD
#define SCM_TIMESTAMP SO_TIMESTAMP
diff --git a/net/core/sock.c b/net/core/sock.c
index e60036618205..7b485dfaa400 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -652,15 +652,23 @@ static void setsockopt_timestamp(struct sock *sk, int type, int val)
if (!val) {
sock_reset_flag(sk, SOCK_RCVTSTAMP);
sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
+ sock_reset_flag(sk, SOCK_TSTAMP_NEW);
return;
}
+ if (type == SO_TIMESTAMP_NEW || type == SO_TIMESTAMPNS_NEW)
+ sock_set_flag(sk, SOCK_TSTAMP_NEW);
+ else
+ sock_reset_flag(sk, SOCK_TSTAMP_NEW);
+
switch (type) {
case SO_TIMESTAMP_OLD:
+ case SO_TIMESTAMP_NEW:
sock_reset_flag(sk, SOCK_RCVTSTAMPNS);
sock_set_flag(sk, SOCK_RCVTSTAMP);
break;
case SO_TIMESTAMPNS_OLD:
+ case SO_TIMESTAMPNS_NEW:
sock_reset_flag(sk, SOCK_RCVTSTAMP);
sock_set_flag(sk, SOCK_RCVTSTAMPNS);
break;
@@ -837,7 +845,9 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
break;
case SO_TIMESTAMP_OLD:
+ case SO_TIMESTAMP_NEW:
case SO_TIMESTAMPNS_OLD:
+ case SO_TIMESTAMPNS_NEW:
setsockopt_timestamp(sk, optname, valbool);
break;
@@ -1202,6 +1212,14 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
v.val = sock_flag(sk, SOCK_RCVTSTAMPNS);
break;
+ case SO_TIMESTAMP_NEW:
+ v.val = sock_flag(sk, SOCK_RCVTSTAMP) && sock_flag(sk, SOCK_TSTAMP_NEW);
+ break;
+
+ case SO_TIMESTAMPNS_NEW:
+ v.val = sock_flag(sk, SOCK_RCVTSTAMPNS) && sock_flag(sk, SOCK_TSTAMP_NEW);
+ break;
+
case SO_TIMESTAMPING_OLD:
v.val = sk->sk_tsflags;
break;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 805d9965a210..b470f470343a 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1860,30 +1860,57 @@ static void tcp_update_recv_tstamps(struct sk_buff *skb,
tss->ts[2] = (struct timespec) {0};
}
-/* Similar to __sock_recv_timestamp, but does not require an skb */
-static void tcp_recv_timestamp(struct msghdr *msg, const struct sock *sk,
- struct scm_timestamping *tss)
+static void tcp_recv_sw_timestamp(struct msghdr *msg, const struct sock *sk, struct timespec64 *ts)
{
- struct __kernel_old_timeval tv;
- bool has_timestamping = false;
+ int new_tstamp = sock_flag(sk, SOCK_TSTAMP_NEW);
- if (tss->ts[0].tv_sec || tss->ts[0].tv_nsec) {
+ if (ts->tv_sec || ts->tv_nsec) {
if (sock_flag(sk, SOCK_RCVTSTAMPNS)) {
- put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD,
- sizeof(tss->ts[0]), &tss->ts[0]);
+ if (new_tstamp) {
+ struct __kernel_timespec kts = {ts->tv_sec, ts->tv_nsec};
+
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_NEW,
+ sizeof(kts), &kts);
+ } else {
+ struct timespec ts_old = timespec64_to_timespec(*ts);
+
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD,
+ sizeof(ts), &ts_old);
+ }
} else if (sock_flag(sk, SOCK_RCVTSTAMP)) {
- tv.tv_sec = tss->ts[0].tv_sec;
- tv.tv_usec = tss->ts[0].tv_nsec / 1000;
+ if (new_tstamp) {
+ struct sock_timeval stv;
- put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,
- sizeof(tv), &tv);
- }
+ stv.tv_sec = ts->tv_sec;
+ stv.tv_usec = ts->tv_nsec / 1000;
- if (sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE)
- has_timestamping = true;
- else
- tss->ts[0] = (struct timespec) {0};
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_NEW,
+ sizeof(stv), &stv);
+ } else {
+ struct __kernel_old_timeval tv;
+
+ tv.tv_sec = ts->tv_sec;
+ tv.tv_usec = ts->tv_nsec / 1000;
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_NEW,
+ sizeof(tv), &tv);
+ }
+ }
}
+}
+
+/* Similar to __sock_recv_timestamp, but does not require an skb */
+static void tcp_recv_timestamp(struct msghdr *msg, const struct sock *sk,
+ struct scm_timestamping *tss)
+{
+ bool has_timestamping = false;
+ struct timespec64 ts = timespec_to_timespec64(tss->ts[0]);
+
+ tcp_recv_sw_timestamp(msg, sk, &ts);
+
+ if (sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE)
+ has_timestamping = true;
+ else
+ tss->ts[0] = (struct timespec) {0};
if (tss->ts[2].tv_sec || tss->ts[2].tv_nsec) {
if (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE)
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index eeb4639adbe5..65571a6273c3 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -348,7 +348,7 @@ static int rds_set_transport(struct rds_sock *rs, char __user *optval,
}
static int rds_enable_recvtstamp(struct sock *sk, char __user *optval,
- int optlen)
+ int optlen, int optname)
{
int val, valbool;
@@ -360,6 +360,9 @@ static int rds_enable_recvtstamp(struct sock *sk, char __user *optval,
valbool = val ? 1 : 0;
+ if (optname == SO_TIMESTAMP_NEW)
+ sock_set_flag(sk, SOCK_TSTAMP_NEW);
+
if (valbool)
sock_set_flag(sk, SOCK_RCVTSTAMP);
else
@@ -431,8 +434,9 @@ static int rds_setsockopt(struct socket *sock, int level, int optname,
release_sock(sock->sk);
break;
case SO_TIMESTAMP_OLD:
+ case SO_TIMESTAMP_NEW:
lock_sock(sock->sk);
- ret = rds_enable_recvtstamp(sock->sk, optval, optlen);
+ ret = rds_enable_recvtstamp(sock->sk, optval, optlen, optname);
release_sock(sock->sk);
break;
case SO_RDS_MSG_RXPATH_LATENCY:
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 435bf2320cd3..4c3fd56dc4ca 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -550,8 +550,20 @@ static int rds_cmsg_recv(struct rds_incoming *inc, struct msghdr *msg,
if ((inc->i_rx_tstamp != 0) &&
sock_flag(rds_rs_to_sk(rs), SOCK_RCVTSTAMP)) {
struct __kernel_old_timeval tv = ns_to_kernel_old_timeval(inc->i_rx_tstamp);
- ret = put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,
- sizeof(tv), &tv);
+
+ if (!sock_flag(rds_rs_to_sk(rs), SOCK_TSTAMP_NEW)) {
+ ret = put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,
+ sizeof(tv), &tv);
+ } else {
+ struct sock_timeval sk_tv;
+
+ sk_tv.tv_sec = tv.tv_sec;
+ sk_tv.tv_usec = tv.tv_usec;
+
+ ret = put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_NEW,
+ sizeof(sk_tv), &sk_tv);
+ }
+
if (ret)
goto out;
}
diff --git a/net/socket.c b/net/socket.c
index d3defba55547..9abeb6bc9cfe 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -699,6 +699,38 @@ static void put_ts_pktinfo(struct msghdr *msg, struct sk_buff *skb)
sizeof(ts_pktinfo), &ts_pktinfo);
}
+static void sock_recv_sw_timestamp(struct msghdr *msg, struct sock *sk,
+ struct sk_buff *skb)
+{
+ if (sock_flag(sk, SOCK_TSTAMP_NEW)) {
+ if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
+ struct sock_timeval tv;
+
+ skb_get_new_timestamp(skb, &tv);
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_NEW,
+ sizeof(tv), &tv);
+ } else {
+ struct __kernel_timespec ts;
+
+ skb_get_new_timestampns(skb, &ts);
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_NEW,
+ sizeof(ts), &ts);
+ }
+ }
+ if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
+ struct __kernel_old_timeval tv;
+
+ skb_get_timestamp(skb, &tv);
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,
+ sizeof(tv), &tv);
+ } else {
+ struct timespec ts;
+
+ skb_get_timestampns(skb, &ts);
+ put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD,
+ sizeof(ts), &ts);
+ }
+}
/*
* called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP)
* or sock_flag(sk, SOCK_RCVTSTAMPNS)
@@ -719,19 +751,8 @@ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
false_tstamp = 1;
}
- if (need_software_tstamp) {
- if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) {
- struct __kernel_old_timeval tv;
- skb_get_timestamp(skb, &tv);
- put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,
- sizeof(tv), &tv);
- } else {
- struct timespec ts;
- skb_get_timestampns(skb, &ts);
- put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD,
- sizeof(ts), &ts);
- }
- }
+ if (need_software_tstamp)
+ sock_recv_sw_timestamp(msg, sk, skb);
memset(&tss, 0, sizeof(tss));
if ((sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE) &&
--
2.17.1
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