net: gptp: Allow user to tweak priority1 and priority2 values (e3fd1707) · Commits · Wenxi XU / zephyr

include/net/gptp.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -34,7 +34,12 @@ extern "C" {

		#define GPTP_PRIORITY1_NON_GM_CAPABLE 255
		#define GPTP_PRIORITY1_GM_CAPABLE 248

		#if defined(CONFIG_NET_GPTP_BMCA_PRIORITY2)
		#define GPTP_PRIORITY2_DEFAULT CONFIG_NET_GPTP_BMCA_PRIORITY2
		#else
		#define GPTP_PRIORITY2_DEFAULT 248
		#endif

		/** @endcond */

+25 −0

Original line number	Diff line number	Diff line
		@@ -195,6 +195,31 @@ config NET_GPTP_PATH_TRACE_ELEMENTS
		Announce message. Each array element takes 8 bytes. If this value
		is set to 8, then 8 * 8 = 64 bytes of memory is used.

		config NET_GPTP_BMCA_PRIORITY1
		int "BMCA priority1 value"
		default 248 if NET_GPTP_GM_CAPABLE
		default 255
		range 0 255
		help
		The priority1 attribute of the local clock. It is used in the
		Best Master Clock selection Algorithm (BMCA), lower values take
		precedence. The default value is 255 if the device is non grand
		master capable, and 248 if it is GM capable.
		See Chapter 8.6.2.1 of IEEE 802.1AS for a more detailed description
		of priority1. Note that if the system is non GM capable, then the
		value 255 is used always and this setting is ignored.

		config NET_GPTP_BMCA_PRIORITY2
		int "BMCA priority2 value"
		default 248
		range 0 255
		help
		The priority2 attribute of the local clock. It is used in the BMCA
		(Best Master Clock selection Algorithm), lower values take
		precedence. The default value is 248.
		See Chapter 8.6.2.5 of IEEE 802.1AS for a more detailed description
		of priority2.

		config NET_GPTP_STATISTICS
		bool "Collect gPTP statistics"
		help

+9 −1

Original line number	Diff line number	Diff line
		@@ -382,7 +382,15 @@ static void gptp_init_clock_ds(void)
		GPTP_OFFSET_SCALED_LOG_VAR_UNKNOWN;

		if (default_ds->gm_capable) {
		/* The priority1 value cannot be 255 for GM capable
		* system.
		*/
		if (CONFIG_NET_GPTP_BMCA_PRIORITY1 ==
		GPTP_PRIORITY1_NON_GM_CAPABLE) {
		default_ds->priority1 = GPTP_PRIORITY1_GM_CAPABLE;
		} else {
		default_ds->priority1 = CONFIG_NET_GPTP_BMCA_PRIORITY1;
		}
		} else {
		default_ds->priority1 = GPTP_PRIORITY1_NON_GM_CAPABLE;
		}