diff options
| -rw-r--r-- | drivers/ptp/ptp_chardev.c | 8 | ||||
| -rw-r--r-- | include/linux/ptp_clock_kernel.h | 36 | ||||
| -rw-r--r-- | include/uapi/linux/ptp_clock.h | 24 |
3 files changed, 56 insertions, 12 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index 2067b0120d08..ea96a14d72d1 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -359,11 +359,15 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, extoff = NULL; break; } - if (extoff->n_samples > PTP_MAX_SAMPLES - || extoff->rsv[0] || extoff->rsv[1] || extoff->rsv[2]) { + if (extoff->n_samples > PTP_MAX_SAMPLES || + extoff->rsv[0] || extoff->rsv[1] || + (extoff->clockid != CLOCK_REALTIME && + extoff->clockid != CLOCK_MONOTONIC && + extoff->clockid != CLOCK_MONOTONIC_RAW)) { err = -EINVAL; break; } + sts.clockid = extoff->clockid; for (i = 0; i < extoff->n_samples; i++) { err = ptp->info->gettimex64(ptp->info, &ts, &sts); if (err) diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h index 6e4b8206c7d0..c892d22ce0a7 100644 --- a/include/linux/ptp_clock_kernel.h +++ b/include/linux/ptp_clock_kernel.h @@ -47,10 +47,12 @@ struct system_device_crosststamp; * struct ptp_system_timestamp - system time corresponding to a PHC timestamp * @pre_ts: system timestamp before capturing PHC * @post_ts: system timestamp after capturing PHC + * @clockid: clock-base used for capturing the system timestamps */ struct ptp_system_timestamp { struct timespec64 pre_ts; struct timespec64 post_ts; + clockid_t clockid; }; /** @@ -457,14 +459,40 @@ static inline ktime_t ptp_convert_timestamp(const ktime_t *hwtstamp, static inline void ptp_read_system_prets(struct ptp_system_timestamp *sts) { - if (sts) - ktime_get_real_ts64(&sts->pre_ts); + if (sts) { + switch (sts->clockid) { + case CLOCK_REALTIME: + ktime_get_real_ts64(&sts->pre_ts); + break; + case CLOCK_MONOTONIC: + ktime_get_ts64(&sts->pre_ts); + break; + case CLOCK_MONOTONIC_RAW: + ktime_get_raw_ts64(&sts->pre_ts); + break; + default: + break; + } + } } static inline void ptp_read_system_postts(struct ptp_system_timestamp *sts) { - if (sts) - ktime_get_real_ts64(&sts->post_ts); + if (sts) { + switch (sts->clockid) { + case CLOCK_REALTIME: + ktime_get_real_ts64(&sts->post_ts); + break; + case CLOCK_MONOTONIC: + ktime_get_ts64(&sts->post_ts); + break; + case CLOCK_MONOTONIC_RAW: + ktime_get_raw_ts64(&sts->post_ts); + break; + default: + break; + } + } } #endif diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h index 053b40d642de..18eefa6d93d6 100644 --- a/include/uapi/linux/ptp_clock.h +++ b/include/uapi/linux/ptp_clock.h @@ -155,13 +155,25 @@ struct ptp_sys_offset { struct ptp_clock_time ts[2 * PTP_MAX_SAMPLES + 1]; }; +/* + * ptp_sys_offset_extended - data structure for IOCTL operation + * PTP_SYS_OFFSET_EXTENDED + * + * @n_samples: Desired number of measurements. + * @clockid: clockid of a clock-base used for pre/post timestamps. + * @rsv: Reserved for future use. + * @ts: Array of samples in the form [pre-TS, PHC, post-TS]. The + * kernel provides @n_samples. + * + * Starting from kernel 6.12 and onwards, the first word of the reserved-field + * is used for @clockid. That's backward compatible since previous kernel + * expect all three reserved words (@rsv[3]) to be 0 while the clockid (first + * word in the new structure) for CLOCK_REALTIME is '0'. + */ struct ptp_sys_offset_extended { - unsigned int n_samples; /* Desired number of measurements. */ - unsigned int rsv[3]; /* Reserved for future use. */ - /* - * Array of [system, phc, system] time stamps. The kernel will provide - * 3*n_samples time stamps. - */ + unsigned int n_samples; + __kernel_clockid_t clockid; + unsigned int rsv[2]; struct ptp_clock_time ts[PTP_MAX_SAMPLES][3]; }; |