Function get_extra_parms

tools/ipfw/dummynet.c:224–353

Get AQM or scheduler extra parameters */

 
/* Get AQM or scheduler extra parameters  */
static void
get_extra_parms(uint32_t nr, char *out, int subtype)
{ 
	struct dn_extra_parms *ep;
	int ret;
	char strt1[15], strt2[15], strt3[15];
	u_int l;

	/* prepare the request */
	l = sizeof(struct dn_extra_parms);
	ep = safe_calloc(1, l);
	memset(ep, 0, sizeof(*ep));
	*out = '\0';

	oid_fill(&ep->oid, l, DN_CMD_GET, DN_API_VERSION);
	ep->oid.len = l;
	ep->oid.subtype = subtype;
	ep->nr = nr;

	ret = do_cmd(-IP_DUMMYNET3, ep, (uintptr_t)&l);
	if (ret) {
		free(ep);
		errx(EX_DATAERR, "Error getting extra parameters\n");
	}

	switch (subtype) {
	case DN_AQM_PARAMS:
		if( !strcasecmp(ep->name, "codel")) {
			us_to_time(ep->par[0], strt1);
			us_to_time(ep->par[1], strt2);
			l = sprintf(out, " AQM CoDel target %s interval %s",
				strt1, strt2);
			if (ep->par[2] & CODEL_ECN_ENABLED)
				l = sprintf(out + l, " ECN");
			else
				l += sprintf(out + l, " NoECN");
		} else if( !strcasecmp(ep->name, "pie")) {
			us_to_time(ep->par[0], strt1);
			us_to_time(ep->par[1], strt2);
			us_to_time(ep->par[2], strt3);
			l = sprintf(out, " AQM type PIE target %s tupdate %s alpha "
					"%g beta %g max_burst %s max_ecnth %.3g",
					strt1,
					strt2,
					ep->par[4] / (float) PIE_SCALE,
					ep->par[5] / (float) PIE_SCALE,
					strt3,
					ep->par[3] / (float) PIE_SCALE
				);
				
			if (ep->par[6] & PIE_ECN_ENABLED)
				l += sprintf(out + l, " ECN");
			else
				l += sprintf(out + l, " NoECN");
			if (ep->par[6] & PIE_CAPDROP_ENABLED)
				l += sprintf(out + l, " CapDrop");
			else
				l += sprintf(out + l, " NoCapDrop");