Re: [PATCH v2 7/8] socket: Add SO_TIMESTAMPING_NEW
From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: 2018-12-12 15:25:47
Also in:
linux-alpha, linux-arch, linux-s390, lkml, sparclinux
On Tue, Dec 11, 2018 at 3:30 PM Deepa Dinamani [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add SO_TIMESTAMPING_NEW variant of socket timestamp options. This is the y2038 safe versions of the SO_TIMESTAMPING_OLD for all architectures. Signed-off-by: Deepa Dinamani <redacted> Cc: chris@zankel.net Cc: fenghua.yu@intel.com Cc: rth@twiddle.net Cc: tglx@linutronix.de Cc: ubraun@linux.ibm.com Cc: linux-alpha@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-s390@vger.kernel.org Cc: linux-xtensa@linux-xtensa.org Cc: sparclinux@vger.kernel.org --- arch/alpha/include/uapi/asm/socket.h | 5 +- arch/mips/include/uapi/asm/socket.h | 5 +- arch/parisc/include/uapi/asm/socket.h | 5 +- arch/sparc/include/uapi/asm/socket.h | 8 +-- include/linux/socket.h | 7 +++ include/uapi/asm-generic/socket.h | 5 +- include/uapi/linux/errqueue.h | 4 ++ net/core/scm.c | 27 ++++++++++ net/core/sock.c | 73 +++++++++++++++------------ net/ipv4/tcp.c | 29 ++++++----- net/smc/af_smc.c | 3 +- net/socket.c | 15 ++++-- 12 files changed, 122 insertions(+), 64 deletions(-)diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h index 352e3dc0b3d9..8b9f6f7f8087 100644 --- a/arch/alpha/include/uapi/asm/socket.h +++ b/arch/alpha/include/uapi/asm/socket.h@@ -116,19 +116,20 @@ #define SO_TIMESTAMP_NEW 62 #define SO_TIMESTAMPNS_NEW 63 +#define SO_TIMESTAMPING_NEW 64 #if !defined(__KERNEL__) #if __BITS_PER_LONG == 64 #define SO_TIMESTAMP SO_TIMESTAMP_OLD #define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD +#define SO_TIMESTAMPING SO_TIMESTAMPING_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) +#define SO_TIMESTAMPING (sizeof(time_t) == sizeof(__kernel_long_t) ? SO_TIMESTAMPING_OLD : SO_TIMESTAMPING_NEW) #endif
If the previous patch moves this block to a platform-independent header, that allows this patch to shrink considerably, too.
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+static int setsockopt_timestamping(struct sock *sk, int type, int val) +{ + if (type == SO_TIMESTAMPING_NEW) + sock_set_flag(sk, SOCK_TSTAMP_NEW); + + if (val & ~SOF_TIMESTAMPING_MASK) + return -EINVAL; + + if (val & SOF_TIMESTAMPING_OPT_ID && + !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) { + if (sk->sk_protocol == IPPROTO_TCP && + sk->sk_type == SOCK_STREAM) { + if ((1 << sk->sk_state) & + (TCPF_CLOSE | TCPF_LISTEN)) + return -EINVAL; + sk->sk_tskey = tcp_sk(sk)->snd_una; + } else { + sk->sk_tskey = 0; + } + } + + if (val & SOF_TIMESTAMPING_OPT_STATS && + !(val & SOF_TIMESTAMPING_OPT_TSONLY)) + return -EINVAL; + + sk->sk_tsflags = val; + if (val & SOF_TIMESTAMPING_RX_SOFTWARE) { + sock_enable_timestamp(sk, + SOCK_TIMESTAMPING_RX_SOFTWARE); + } else { + if (type == SO_TIMESTAMPING_NEW) + sock_reset_flag(sk, SOCK_TSTAMP_NEW); + sock_disable_timestamp(sk, + (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE)); + } + + return 0; +} + /* * This is meant for all protocols to use and covers goings on * at the socket level. Everything here is generic.@@ -851,39 +890,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname, break; case SO_TIMESTAMPING_OLD: - if (val & ~SOF_TIMESTAMPING_MASK) { - ret = -EINVAL; - break; - } - - if (val & SOF_TIMESTAMPING_OPT_ID && - !(sk->sk_tsflags & SOF_TIMESTAMPING_OPT_ID)) { - if (sk->sk_protocol == IPPROTO_TCP && - sk->sk_type == SOCK_STREAM) { - if ((1 << sk->sk_state) & - (TCPF_CLOSE | TCPF_LISTEN)) { - ret = -EINVAL; - break; - } - sk->sk_tskey = tcp_sk(sk)->snd_una; - } else { - sk->sk_tskey = 0; - } - } - - if (val & SOF_TIMESTAMPING_OPT_STATS && - !(val & SOF_TIMESTAMPING_OPT_TSONLY)) { - ret = -EINVAL; - break; - } - - sk->sk_tsflags = val; - if (val & SOF_TIMESTAMPING_RX_SOFTWARE) - sock_enable_timestamp(sk, - SOCK_TIMESTAMPING_RX_SOFTWARE); - else - sock_disable_timestamp(sk, - (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE)); + ret = setsockopt_timestamping(sk, optname, val);
Once again a lot of needless code churn. The only functional change is adding + if (type == SO_TIMESTAMPING_NEW) + sock_set_flag(sk, SOCK_TSTAMP_NEW);
void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
struct sk_buff *skb)
{
+
int need_software_tstamp = sock_flag(sk, SOCK_RCVTSTAMP);
- struct scm_timestamping tss;
+ struct scm_timestamping_internal tss;
+Unnecessary whitespace line
quoted hunk ↗ jump to hunk
int empty = 1, false_tstamp = 0; struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb);@@ -755,20 +758,22 @@ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,