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| author | Richard Cochran <richardcochran@gmail.com> | 2011-04-22 12:03:08 +0200 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2011-05-23 13:01:00 -0700 |
| commit | d94ba80ebbea17f036cecb104398fbcd788aa742 (patch) | |
| tree | 7fe40228c5ea2bb77f2892b722d27155df8c1157 /include/linux/ptp_classify.h | |
| parent | caebc160ce3f76761cc62ad96ef6d6f30f54e3dd (diff) | |
| download | lwn-d94ba80ebbea17f036cecb104398fbcd788aa742.tar.gz lwn-d94ba80ebbea17f036cecb104398fbcd788aa742.zip | |
ptp: Added a brand new class driver for ptp clocks.
This patch adds an infrastructure for hardware clocks that implement
IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a
registration method to particular hardware clock drivers. Each clock is
presented as a standard POSIX clock.
The ancillary clock features are exposed in two different ways, via
the sysfs and by a character device.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'include/linux/ptp_classify.h')
| -rw-r--r-- | include/linux/ptp_classify.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h index 943a85ab0020..e07e2742a865 100644 --- a/include/linux/ptp_classify.h +++ b/include/linux/ptp_classify.h @@ -25,6 +25,7 @@ #include <linux/if_ether.h> #include <linux/if_vlan.h> +#include <linux/ip.h> #include <linux/filter.h> #ifdef __KERNEL__ #include <linux/in.h> @@ -58,6 +59,12 @@ #define OFF_NEXT 6 #define OFF_UDP_DST 2 +#define OFF_PTP_SOURCE_UUID 22 /* PTPv1 only */ +#define OFF_PTP_SEQUENCE_ID 30 +#define OFF_PTP_CONTROL 32 /* PTPv1 only */ + +#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2) + #define IP6_HLEN 40 #define UDP_HLEN 8 |