add loss paramater.

(Logical change 1.31)

tc/q_delay.c

@@ -64,6 +64,13 @@ static int delay_parse_opt(struct qdisc_util *qu, int argc, char **argv,
 				return -1;
 			}
 			ok++;
+		} else if (matches(*argv, "loss") == 0) {
+			NEXT_ARG();
+			if (get_percent(&opt.loss, *argv)) {
+				explain1("loss");
+				return -1;
+			}
+			ok++;
 		} else if (matches(*argv, "rate") == 0) {
 			NEXT_ARG();
 			if (rate) {
@@ -125,11 +132,15 @@ static int delay_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 
 	if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
 		return -1;
+
 	qopt = RTA_DATA(opt);
 
 	fprintf(f, "delay limit %s latency %s ",
 		sprint_size(qopt->limit, b1),
 		sprint_usecs(qopt->latency, b2));
+	if (qopt->loss)
+		fprintf(f, "loss %s ",
+			sprint_percent(qopt->loss, b1));
 	return 0;
 }
 

tc/tc_util.c

@@ -314,6 +314,35 @@ char * sprint_size(__u32 size, char *buf)
 	return buf;
 }
 
+static double percent_scale = (double)(1ull << 32) / 100.;
+
+int get_percent(__u32 *percent, const char *str)
+{
+	char *p;
+	double per = strtod(str, &p);
+
+	if (per > 100.)
+		return -1;
+	if (*p && strcmp(p, "%"))
+		return -1;
+
+	*percent = per * percent_scale;
+	return 0;
+}
+
+int print_percent(char *buf, int len, __u32 per)
+{
+	snprintf(buf, len, "%g%%", (double) per / percent_scale);
+	return 0;
+}
+
+char * sprint_percent(__u32 per, char *buf)
+{
+	if (print_percent(buf, SPRINT_BSIZE-1, per))
+		strcpy(buf, "???");
+	return buf;
+}
+
 int print_qdisc_handle(char *buf, int len, __u32 h)
 {
 	snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);

tc/tc_util.h

@@ -31,11 +31,13 @@ extern struct filter_util *get_filter_kind(const char *str);
 
 extern int get_qdisc_handle(__u32 *h, const char *str);
 extern int get_rate(unsigned *rate, const char *str);
+extern int get_percent(unsigned *percent, const char *str);
 extern int get_size(unsigned *size, const char *str);
 extern int get_size_and_cell(unsigned *size, int *cell_log, char *str);
 extern int get_usecs(unsigned *usecs, const char *str);
 extern int print_rate(char *buf, int len, __u32 rate);
 extern int print_size(char *buf, int len, __u32 size);
+extern int print_percent(char *buf, int len, __u32 percent);
 extern int print_qdisc_handle(char *buf, int len, __u32 h);
 extern int print_usecs(char *buf, int len, __u32 usecs);
 extern char * sprint_rate(__u32 rate, char *buf);
@@ -43,6 +45,7 @@ extern char * sprint_size(__u32 size, char *buf);
 extern char * sprint_qdisc_handle(__u32 h, char *buf);
 extern char * sprint_tc_classid(__u32 h, char *buf);
 extern char * sprint_usecs(__u32 usecs, char *buf);
+extern char * sprint_percent(__u32 percent, char *buf);
 
 extern void print_tcstats(FILE *fp, struct tc_stats *st);