gitified_old_clb_svn/sw/embedded/WRPC/ppsi/lib/cmdline.c

/*
 * Aurelio Colosimo for CERN, 2011 -- GNU LGPL v2.1 or later
 */

#define CONFIG_PPSI_RUNTIME_VERBOSITY 1
#include <ppsi/ppsi.h>

#define CMD_LINE_SEPARATOR {"", ""}

struct cmd_line_opt {
	char *flag;
	char *help;
};
static struct cmd_line_opt cmd_line_list[] = {
	{"-?", "show this page"},
	/* FIXME cmdline check if useful */
	//{"-c", "run in command line (non-daemon) mode"},
	//{"-S", "send output to syslog"},
	//{"-T", "set multicast time to live"},
	//{"-d", "display stats"},
	//{"-D", "display stats in .csv format"},
	//{"-R", "record data about sync packets in a file"},
	{"-V", "run in verbose mode"},
	{"-d STRING", "diagnostic level (see diag-macros.h)"},
	CMD_LINE_SEPARATOR,
	{"-x", "do not reset the clock if off by more than one second"},
	{"-O NUMBER", "do not reset the clock if offset is more than NUMBER nanoseconds"},
	{"-M NUMBER", "do not accept delay values of more than NUMBER nanoseconds"},
	{"-t", "do not adjust the system clock"},
	{"-a NUMBER,NUMBER", "specify clock servo P and I values (min == 1)"},
	{"-w NUMBER", "specify one way delay filter stiffness"},
	CMD_LINE_SEPARATOR,
	{"-b NAME", "bind PTP to network interface NAME"},
	//{"-u ADDRESS", "also send uni-cast to ADDRESS\n"}, -- FIXME: useful?
	{"-e", "run in ethernet mode (level2)"},
	/* {"-h", "run in End to End mode"}, -- we only support end-to-end */
	/* {"-G", "run in gPTP mode (implies -e)"}, -- no peer-to-peer mode */
	{"-l NUMBER,NUMBER", "specify inbound, outbound latency in nsec"},
	CMD_LINE_SEPARATOR,
	{"-i NUMBER", "specify PTP domain number"},
	CMD_LINE_SEPARATOR,
	{"-n NUMBER", "specify announce interval in 2^NUMBER sec"},
	{"-y NUMBER", "specify sync interval in 2^NUMBER sec"},
	CMD_LINE_SEPARATOR,
	{"-g", "run as slave only"},
	{"-v NUMBER", "specify system clock allen variance"},
	{"-r NUMBER", "specify system clock accuracy"},
	{"-s NUMBER", "specify system clock class"},
	{"-p NUMBER", "specify priority1 attribute"},
	{"-q NUMBER", "specify priority2 attribute"},
	CMD_LINE_SEPARATOR,
	{NULL, NULL}
};

static void cmd_line_print_help(void)
{
	int i = 0;
	pp_printf("\nUsage: ppsi [OPTION]\n\n");

	while (1) {
		struct cmd_line_opt *o = &cmd_line_list[i];
		if (o->flag == NULL)
			break;
		pp_printf("%s\n\t%s\n", o->flag, o->help);
		i++;
	}
}

static void cmd_line_parse_two(char *a, int *n1, int *n2)
{
	int i, comma = 0;
	*n1 = *n2 = 0;
	for (i = 0; a[i] != '\0'; i++) {
		if (a[i] == ',') {
			comma = i;
			a[i] = '\0';
			*n1 = atoi(a);
			break;
		}
	}
	*n2 = atoi(&a[comma+1]);
	a[comma] = ',';
}

int pp_parse_cmdline(struct pp_globals *ppg, int argc, char **argv)
{
	int i, err = 0;
	int j;
	char *a; /* cmd line argument */
	int n1, n2; /* used by cmd_line_parse_two */

	for (i = 1; i < argc; i++) {
		a = argv[i];
		if (a[0] != '-')
			err = 1;
		else if (a[1] == '?')
			err = 1;
		else if (a[1] && a[2])
			err = 1;
		if (err) {
			cmd_line_print_help();
			return -1;
		}
		if (1) { /* ARub: I don't want to reintent it all now */
			switch (a[1]) {
			case 'V':
				pp_diag_verbosity++;
				break;
			case 'd':
				/* Use the general flags, per-instance TBD */
				a = argv[++i];
				pp_global_flags = pp_diag_parse(a);
				break;
			case 'x':
				GOPTS(ppg)->no_rst_clk = 1;
				break;
			case 'O':
				a = argv[++i];
				GOPTS(ppg)->max_rst = atoi(a);
				if (GOPTS(ppg)->max_rst < PP_NSEC_PER_SEC) {
					pp_printf("Use -x to prevent jumps of"
					" more than one second\n");
					return -1;
				}
				break;
			case 'M':
				a = argv[++i];
				GOPTS(ppg)->max_dly = atoi(a);
				if (GOPTS(ppg)->max_dly < PP_NSEC_PER_SEC) {
					pp_printf("Use -x to prevent jumps of"
						" more than one second\n");
					return -1;
				}
				break;
			case 't':
				GOPTS(ppg)->no_adjust = 1;
				break;
			case 'a':
				a = argv[++i];
				cmd_line_parse_two(a, &n1, &n2);
				/* no negative or zero attenuation */
				if (n1 < 1 || n2 < 1)
					return -1;
				GOPTS(ppg)->ap = n1;
				GOPTS(ppg)->ai = n2;
				break;
			case 'w':
				a = argv[++i];
				GOPTS(ppg)->s = atoi(a);
				break;
			case 'b':
				a = argv[++i];
				if (ppg->nlinks == 1)
					ppg->pp_instances[0].iface_name = a;
				else {
					/* If ppsi.conf exists and more than one link is
					 * configured, it makes no sense trying to set an iface
					 * name */
					pp_printf("Can not use -b option in multi-link conf");
					return -1;
				}
				break;
			case 'l':
				a = argv[++i];
				cmd_line_parse_two(a, &n1, &n2);
				GOPTS(ppg)->inbound_latency.nanoseconds = n1;
				GOPTS(ppg)->outbound_latency.nanoseconds = n2;
				break;
			case 'i':
				a = argv[++i];
				GOPTS(ppg)->domain_number = atoi(a);
				break;
			case 'y':
				a = argv[++i];
				GOPTS(ppg)->sync_intvl = atoi(a);
				break;
			case 'n':
				a = argv[++i];
				/* Page 237 says 0 to 4 (1s .. 16s) */
				GOPTS(ppg)->announce_intvl = atoi(a);
				if (GOPTS(ppg)->announce_intvl < 0)
					GOPTS(ppg)->announce_intvl = 0;
				if (GOPTS(ppg)->announce_intvl > 4)
					GOPTS(ppg)->announce_intvl = 4;
				break;
			case 'g':
				/* Apply -g option globally, to each configured link */
				for (j = 0; j < ppg->nlinks; j++)
					ppg->pp_instances[j].slave_only = 1;
				break;
			case 'v':
				a = argv[++i];
				GOPTS(ppg)->clock_quality.
					offsetScaledLogVariance = atoi(a);
				break;
			case 'r':
				a = argv[++i];
				GOPTS(ppg)->clock_quality.clockAccuracy =
					atoi(a);
				break;
			case 's':
				a = argv[++i];
				GOPTS(ppg)->clock_quality.clockClass =
					atoi(a);
				break;
			case 'p':
				a = argv[++i];
				GOPTS(ppg)->prio1 = atoi(a);
				break;
			case 'q':
				a = argv[++i];
				GOPTS(ppg)->prio2 = atoi(a);
				break;
			case 'h':
				/* ignored: was "GOPTS(ppg)->e2e_mode = 1;" */
				break;
			case 'e':
				/* Apply -e option globally, to each configured link */
				for (j = 0; j < ppg->nlinks; j++)
					ppg->pp_instances[j].ethernet_mode = 1;
				break;
			case 'G':
				/* gptp_mode not supported: fall through */
			default:
				cmd_line_print_help();
				return -1;
			}
		}
	 }
	return 0;
}