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@gmail.com Cc: jejb@parisc-linux.org Cc: ralf@linux-mips.org Cc: rth@twiddle.net Cc: linux-alpha@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-parisc@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: netdev@vger.kernel.org Cc: sparclinux@vger.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) &&