Since PTP virtual clock support is added, there can be several PTP virtual clocks based on one PTP physical clock for timestamping. This patch is to extend SO_TIMESTAMPING API to support PHC (PTP Hardware Clock) binding by adding a new flag SOF_TIMESTAMPING_BIND_PHC. When PTP virtual clocks are in use, user space can configure to bind one for timestamping, but PTP physical clock is not supported and not needed to bind. This patch is preparation for timestamp conversion from raw timestamp to a specific PTP virtual clock time in core net.
Showing the changes to include/uapi/linux (1 of 5 files). Show all
Unified · Split
| @@ -13,7 +13,7 @@ · 12 unmodified lines | ||
| 13 | 13 | #include <linux/types.h> |
| 14 | 14 | #include <linux/socket.h> /* for SO_TIMESTAMPING */ |
| 15 | 15 | |
| 16 | −/* SO_TIMESTAMPING gets an integer bit field comprised of these values */ | |
| 16 | +/* SO_TIMESTAMPING flags */ | |
| 17 | 17 | enum { |
| 18 | 18 | SOF_TIMESTAMPING_TX_HARDWARE = (1<<0), |
| 19 | 19 | SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1), |
| @@ -30,8 +30,9 @@ enum { · 10 unmodified lines | ||
| 30 | 30 | SOF_TIMESTAMPING_OPT_STATS = (1<<12), |
| 31 | 31 | SOF_TIMESTAMPING_OPT_PKTINFO = (1<<13), |
| 32 | 32 | SOF_TIMESTAMPING_OPT_TX_SWHW = (1<<14), |
| 33 | + SOF_TIMESTAMPING_BIND_PHC = (1 << 15), | |
| 33 | 34 | |
| 34 | − SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_TX_SWHW, | |
| 35 | + SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_BIND_PHC, | |
| 35 | 36 | SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | |
| 36 | 37 | SOF_TIMESTAMPING_LAST |
| 37 | 38 | }; |
| @@ -46,6 +47,18 @@ enum { · 8 unmodified lines | ||
| 46 | 47 | SOF_TIMESTAMPING_TX_SCHED | \ |
| 47 | 48 | SOF_TIMESTAMPING_TX_ACK) |
| 48 | 49 | |
| 50 | +/** | |
| 51 | + * struct so_timestamping - SO_TIMESTAMPING parameter | |
| 52 | + * | |
| 53 | + * @flags: SO_TIMESTAMPING flags | |
| 54 | + * @bind_phc: Index of PTP virtual clock bound to sock. This is available | |
| 55 | + * if flag SOF_TIMESTAMPING_BIND_PHC is set. | |
| 56 | + */ | |
| 57 | +struct so_timestamping { | |
| 58 | + int flags; | |
| 59 | + int bind_phc; | |
| 60 | +}; | |
| 61 | + | |
| 49 | 62 | /** |
| 50 | 63 | * struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter |
| 51 | 64 | * |