[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/iproute2/iproute2-3.4.0/tc/q_netem.c b/ap/app/iproute2/iproute2-3.4.0/tc/q_netem.c
new file mode 100755
index 0000000..360080c
--- /dev/null
+++ b/ap/app/iproute2/iproute2-3.4.0/tc/q_netem.c
@@ -0,0 +1,631 @@
+/*
+ * q_netem.c		NETEM.
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:	Stephen Hemminger <shemminger@linux-foundation.org>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <errno.h>
+
+#include "utils.h"
+#include "tc_util.h"
+#include "tc_common.h"
+
+static void explain(void)
+{
+	fprintf(stderr,
+"Usage: ... netem [ limit PACKETS ] \n" \
+"                 [ delay TIME [ JITTER [CORRELATION]]]\n" \
+"                 [ distribution {uniform|normal|pareto|paretonormal} ]\n" \
+"                 [ corrupt PERCENT [CORRELATION]] \n" \
+"                 [ duplicate PERCENT [CORRELATION]]\n" \
+"                 [ loss random PERCENT [CORRELATION]]\n" \
+"                 [ loss state P13 [P31 [P32 [P23 P14]]]\n" \
+"                 [ loss gemodel PERCENT [R [1-H [1-K]]]\n" \
+"                 [ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \
+"                 [ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n");
+}
+
+static void explain1(const char *arg)
+{
+	fprintf(stderr, "Illegal \"%s\"\n", arg);
+}
+
+/* Upper bound on size of distribution
+ *  really (TCA_BUF_MAX - other headers) / sizeof (__s16)
+ */
+#define MAX_DIST	(16*1024)
+
+static const double max_percent_value = 0xffffffff;
+
+/* scaled value used to percent of maximum. */
+static void set_percent(__u32 *percent, double per)
+{
+	*percent = (unsigned) rint(per * max_percent_value);
+}
+
+
+/* Parse either a fraction '.3' or percent '30%
+ * return: 0 = ok, -1 = error, 1 = out of range
+ */
+static int parse_percent(double *val, const char *str)
+{
+	char *p;
+
+	*val = strtod(str, &p) / 100.;
+	if (*p && strcmp(p, "%") )
+		return -1;
+
+	return 0;
+}
+
+static int get_percent(__u32 *percent, const char *str)
+{
+	double per;
+
+	if (parse_percent(&per, str))
+		return -1;
+
+	set_percent(percent, per);
+	return 0;
+}
+
+void print_percent(char *buf, int len, __u32 per)
+{
+	snprintf(buf, len, "%g%%", 100. * (double) per / max_percent_value);
+}
+
+char * sprint_percent(__u32 per, char *buf)
+{
+	print_percent(buf, SPRINT_BSIZE-1, per);
+	return buf;
+}
+
+/*
+ * Simplistic file parser for distrbution data.
+ * Format is:
+ *	# comment line(s)
+ *	data0 data1 ...
+ */
+static int get_distribution(const char *type, __s16 *data, int maxdata)
+{
+	FILE *f;
+	int n;
+	long x;
+	size_t len;
+	char *line = NULL;
+	char name[128];
+
+	snprintf(name, sizeof(name), "%s/%s.dist", get_tc_lib(), type);
+	if ((f = fopen(name, "r")) == NULL) {
+		fprintf(stderr, "No distribution data for %s (%s: %s)\n",
+			type, name, strerror(errno));
+		return -1;
+	}
+
+	n = 0;
+	while (getline(&line, &len, f) != -1) {
+		char *p, *endp;
+		if (*line == '\n' || *line == '#')
+			continue;
+
+		for (p = line; ; p = endp) {
+			x = strtol(p, &endp, 0);
+			if (endp == p)
+				break;
+
+			if (n >= maxdata) {
+				fprintf(stderr, "%s: too much data\n",
+					name);
+				n = -1;
+				goto error;
+			}
+			data[n++] = x;
+		}
+	}
+ error:
+	free(line);
+	fclose(f);
+	return n;
+}
+
+#define NEXT_IS_NUMBER() (NEXT_ARG_OK() && isdigit(argv[1][0]))
+
+/* Adjust for the fact that psched_ticks aren't always usecs
+   (based on kernel PSCHED_CLOCK configuration */
+static int get_ticks(__u32 *ticks, const char *str)
+{
+	unsigned t;
+
+	if(get_time(&t, str))
+		return -1;
+
+	if (tc_core_time2big(t)) {
+		fprintf(stderr, "Illegal %u time (too large)\n", t);
+		return -1;
+	}
+
+	*ticks = tc_core_time2tick(t);
+	return 0;
+}
+
+static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+			   struct nlmsghdr *n)
+{
+	int dist_size = 0;
+	struct rtattr *tail;
+	struct tc_netem_qopt opt = { .limit = 1000 };
+	struct tc_netem_corr cor;
+	struct tc_netem_reorder reorder;
+	struct tc_netem_corrupt corrupt;
+	struct tc_netem_gimodel gimodel;
+	struct tc_netem_gemodel gemodel;
+	struct tc_netem_rate rate;
+	__s16 *dist_data = NULL;
+	__u16 loss_type = NETEM_LOSS_UNSPEC;
+	int present[__TCA_NETEM_MAX];
+
+	memset(&cor, 0, sizeof(cor));
+	memset(&reorder, 0, sizeof(reorder));
+	memset(&corrupt, 0, sizeof(corrupt));
+	memset(&rate, 0, sizeof(rate));
+	memset(present, 0, sizeof(present));
+
+	for( ; argc > 0; --argc, ++argv) {
+		if (matches(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.limit, *argv)) {
+				explain1("limit");
+				return -1;
+			}
+		} else if (matches(*argv, "latency") == 0 ||
+			   matches(*argv, "delay") == 0) {
+			NEXT_ARG();
+			if (get_ticks(&opt.latency, *argv)) {
+				explain1("latency");
+				return -1;
+			}
+
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				if (get_ticks(&opt.jitter, *argv)) {
+					explain1("latency");
+					return -1;
+				}
+
+				if (NEXT_IS_NUMBER()) {
+					NEXT_ARG();
+					++present[TCA_NETEM_CORR];
+					if (get_percent(&cor.delay_corr, *argv)) {
+						explain1("latency");
+						return -1;
+					}
+				}
+			}
+		} else if (matches(*argv, "loss") == 0 ||
+			   matches(*argv, "drop") == 0) {
+			if (opt.loss > 0 || loss_type != NETEM_LOSS_UNSPEC) {
+				explain1("duplicate loss argument\n");
+				return -1;
+			}
+
+			NEXT_ARG();
+			/* Old (deprecated) random loss model syntax */
+			if (isdigit(argv[0][0]))
+				goto random_loss_model;
+
+			if (!strcmp(*argv, "random")) {
+				NEXT_ARG();
+	random_loss_model:
+				if (get_percent(&opt.loss, *argv)) {
+					explain1("loss percent");
+					return -1;
+				}
+				if (NEXT_IS_NUMBER()) {
+					NEXT_ARG();
+					++present[TCA_NETEM_CORR];
+					if (get_percent(&cor.loss_corr, *argv)) {
+						explain1("loss correllation");
+						return -1;
+					}
+				}
+			} else if (!strcmp(*argv, "state")) {
+				double p13;
+
+				NEXT_ARG();
+				if (parse_percent(&p13, *argv)) {
+					explain1("loss p13");
+					return -1;
+				}
+
+				/* set defaults */
+				set_percent(&gimodel.p13, p13);
+				set_percent(&gimodel.p31, 1. - p13);
+				set_percent(&gimodel.p32, 0);
+				set_percent(&gimodel.p23, 1.);
+				loss_type = NETEM_LOSS_GI;
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gimodel.p31, *argv)) {
+					explain1("loss p31");
+					return -1;
+				}
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gimodel.p32, *argv)) {
+					explain1("loss p32");
+					return -1;
+				}
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gimodel.p23, *argv)) {
+					explain1("loss p23");
+					return -1;
+				}
+
+			} else if (!strcmp(*argv, "gemodel")) {
+				NEXT_ARG();
+				if (get_percent(&gemodel.p, *argv)) {
+					explain1("loss gemodel p");
+					return -1;
+				}
+
+				/* set defaults */
+				set_percent(&gemodel.r, 1.);
+				set_percent(&gemodel.h, 0);
+				set_percent(&gemodel.k1, 1.);
+				loss_type = NETEM_LOSS_GE;
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gemodel.r, *argv)) {
+					explain1("loss gemodel r");
+					return -1;
+				}
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gemodel.h, *argv)) {
+					explain1("loss gemodel h");
+					return -1;
+				}
+
+				if (!NEXT_IS_NUMBER())
+					continue;
+				NEXT_ARG();
+				if (get_percent(&gemodel.k1, *argv)) {
+					explain1("loss gemodel k");
+					return -1;
+				}
+			} else {
+				fprintf(stderr, "Unknown loss parameter: %s\n",
+					*argv);
+				return -1;
+			}
+		} else if (matches(*argv, "reorder") == 0) {
+			NEXT_ARG();
+			present[TCA_NETEM_REORDER] = 1;
+			if (get_percent(&reorder.probability, *argv)) {
+				explain1("reorder");
+				return -1;
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				++present[TCA_NETEM_CORR];
+				if (get_percent(&reorder.correlation, *argv)) {
+					explain1("reorder");
+					return -1;
+				}
+			}
+		} else if (matches(*argv, "corrupt") == 0) {
+			NEXT_ARG();
+			present[TCA_NETEM_CORRUPT] = 1;
+			if (get_percent(&corrupt.probability, *argv)) {
+				explain1("corrupt");
+				return -1;
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				++present[TCA_NETEM_CORR];
+				if (get_percent(&corrupt.correlation, *argv)) {
+					explain1("corrupt");
+					return -1;
+				}
+			}
+		} else if (matches(*argv, "gap") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.gap, *argv, 0)) {
+				explain1("gap");
+				return -1;
+			}
+		} else if (matches(*argv, "duplicate") == 0) {
+			NEXT_ARG();
+			if (get_percent(&opt.duplicate, *argv)) {
+				explain1("duplicate");
+				return -1;
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				if (get_percent(&cor.dup_corr, *argv)) {
+					explain1("duplicate");
+					return -1;
+				}
+			}
+		} else if (matches(*argv, "distribution") == 0) {
+			NEXT_ARG();
+			dist_data = calloc(sizeof(dist_data[0]), MAX_DIST);
+			dist_size = get_distribution(*argv, dist_data, MAX_DIST);
+			if (dist_size <= 0) {
+				free(dist_data);
+				return -1;
+			}
+		} else if (matches(*argv, "rate") == 0) {
+			++present[TCA_NETEM_RATE];
+			NEXT_ARG();
+			if (get_rate(&rate.rate, *argv)) {
+				explain1("rate");
+				return -1;
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				if (get_s32(&rate.packet_overhead, *argv, 0)) {
+					explain1("rate");
+					return -1;
+				}
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				if (get_u32(&rate.cell_size, *argv, 0)) {
+					explain1("rate");
+					return -1;
+				}
+			}
+			if (NEXT_IS_NUMBER()) {
+				NEXT_ARG();
+				if (get_s32(&rate.cell_overhead, *argv, 0)) {
+					explain1("rate");
+					return -1;
+				}
+			}
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+	}
+
+	tail = NLMSG_TAIL(n);
+
+	if (reorder.probability) {
+		if (opt.latency == 0) {
+			fprintf(stderr, "reordering not possible without specifying some delay\n");
+			explain();
+			return -1;
+		}
+		if (opt.gap == 0)
+			opt.gap = 1;
+	} else if (opt.gap > 0) {
+		fprintf(stderr, "gap specified without reorder probability\n");
+		explain();
+		return -1;
+	}
+
+	if (dist_data && (opt.latency == 0 || opt.jitter == 0)) {
+		fprintf(stderr, "distribution specified but no latency and jitter values\n");
+		explain();
+		return -1;
+	}
+
+	if (addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)) < 0)
+		return -1;
+
+	if (present[TCA_NETEM_CORR] &&
+	    addattr_l(n, 1024, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
+			return -1;
+
+	if (present[TCA_NETEM_REORDER] &&
+	    addattr_l(n, 1024, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
+		return -1;
+
+	if (present[TCA_NETEM_CORRUPT] &&
+	    addattr_l(n, 1024, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
+		return -1;
+
+	if (loss_type != NETEM_LOSS_UNSPEC) {
+		struct rtattr *start;
+
+		start = addattr_nest(n, 1024, TCA_NETEM_LOSS | NLA_F_NESTED);
+		if (loss_type == NETEM_LOSS_GI) {
+			if (addattr_l(n, 1024, NETEM_LOSS_GI,
+				      &gimodel, sizeof(gimodel)) < 0)
+			    return -1;
+		} else if (loss_type == NETEM_LOSS_GE) {
+			if (addattr_l(n, 1024, NETEM_LOSS_GE,
+				      &gemodel, sizeof(gemodel)) < 0)
+			    return -1;
+		} else {
+			fprintf(stderr, "loss in the weeds!\n");
+			return -1;
+		}
+		
+		addattr_nest_end(n, start);
+	}
+
+	if (present[TCA_NETEM_RATE] &&
+	    addattr_l(n, 1024, TCA_NETEM_RATE, &rate, sizeof(rate)) < 0)
+		return -1;
+
+	if (dist_data) {
+		if (addattr_l(n, MAX_DIST * sizeof(dist_data[0]),
+			      TCA_NETEM_DELAY_DIST,
+			      dist_data, dist_size * sizeof(dist_data[0])) < 0)
+			return -1;
+		free(dist_data);
+	}
+	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+	return 0;
+}
+
+static int netem_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	const struct tc_netem_corr *cor = NULL;
+	const struct tc_netem_reorder *reorder = NULL;
+	const struct tc_netem_corrupt *corrupt = NULL;
+	const struct tc_netem_gimodel *gimodel = NULL;
+	const struct tc_netem_gemodel *gemodel = NULL;
+	struct tc_netem_qopt qopt;
+	const struct tc_netem_rate *rate = NULL;
+	int len = RTA_PAYLOAD(opt) - sizeof(qopt);
+	SPRINT_BUF(b1);
+
+	if (opt == NULL)
+		return 0;
+
+	if (len < 0) {
+		fprintf(stderr, "options size error\n");
+		return -1;
+	}
+	memcpy(&qopt, RTA_DATA(opt), sizeof(qopt));
+
+	if (len > 0) {
+		struct rtattr *tb[TCA_NETEM_MAX+1];
+		parse_rtattr(tb, TCA_NETEM_MAX, RTA_DATA(opt) + sizeof(qopt),
+			     len);
+
+		if (tb[TCA_NETEM_CORR]) {
+			if (RTA_PAYLOAD(tb[TCA_NETEM_CORR]) < sizeof(*cor))
+				return -1;
+			cor = RTA_DATA(tb[TCA_NETEM_CORR]);
+		}
+		if (tb[TCA_NETEM_REORDER]) {
+			if (RTA_PAYLOAD(tb[TCA_NETEM_REORDER]) < sizeof(*reorder))
+				return -1;
+			reorder = RTA_DATA(tb[TCA_NETEM_REORDER]);
+		}
+		if (tb[TCA_NETEM_CORRUPT]) {
+			if (RTA_PAYLOAD(tb[TCA_NETEM_CORRUPT]) < sizeof(*corrupt))
+				return -1;
+			corrupt = RTA_DATA(tb[TCA_NETEM_CORRUPT]);
+		}
+		if (tb[TCA_NETEM_LOSS]) {
+			struct rtattr *lb[NETEM_LOSS_MAX + 1];
+
+			parse_rtattr_nested(lb, NETEM_LOSS_MAX, tb[TCA_NETEM_LOSS]);
+			if (lb[NETEM_LOSS_GI])
+				gemodel = RTA_DATA(lb[NETEM_LOSS_GI]);
+			if (lb[NETEM_LOSS_GE])
+				gemodel = RTA_DATA(lb[NETEM_LOSS_GE]);
+		}			
+		if (tb[TCA_NETEM_RATE]) {
+			if (RTA_PAYLOAD(tb[TCA_NETEM_RATE]) < sizeof(*rate))
+				return -1;
+			rate = RTA_DATA(tb[TCA_NETEM_RATE]);
+		}
+	}
+
+	fprintf(f, "limit %d", qopt.limit);
+
+	if (qopt.latency) {
+		fprintf(f, " delay %s", sprint_ticks(qopt.latency, b1));
+
+		if (qopt.jitter) {
+			fprintf(f, "  %s", sprint_ticks(qopt.jitter, b1));
+			if (cor && cor->delay_corr)
+				fprintf(f, " %s", sprint_percent(cor->delay_corr, b1));
+		}
+	}
+
+	if (qopt.loss) {
+		fprintf(f, " loss %s", sprint_percent(qopt.loss, b1));
+		if (cor && cor->loss_corr)
+			fprintf(f, " %s", sprint_percent(cor->loss_corr, b1));
+	}
+
+	if (gimodel) {
+		fprintf(f, " loss state p13 %s", sprint_percent(gimodel->p13, b1));
+		fprintf(f, " p31 %s", sprint_percent(gimodel->p31, b1));
+		fprintf(f, " p32 %s", sprint_percent(gimodel->p32, b1));
+		fprintf(f, " p23 %s", sprint_percent(gimodel->p23, b1));
+		fprintf(f, " p14 %s", sprint_percent(gimodel->p14, b1));
+	}
+
+	if (gemodel) {
+		fprintf(f, "loss gemodel p %s",
+			sprint_percent(gemodel->p, b1));
+		fprintf(f, " r %s", sprint_percent(gemodel->r, b1));
+		fprintf(f, " 1-h %s", sprint_percent(gemodel->h, b1));
+		fprintf(f, " 1-k %s", sprint_percent(gemodel->k1, b1));
+	}
+
+	if (qopt.duplicate) {
+		fprintf(f, " duplicate %s",
+			sprint_percent(qopt.duplicate, b1));
+		if (cor && cor->dup_corr)
+			fprintf(f, " %s", sprint_percent(cor->dup_corr, b1));
+	}
+
+	if (reorder && reorder->probability) {
+		fprintf(f, " reorder %s",
+			sprint_percent(reorder->probability, b1));
+		if (reorder->correlation)
+			fprintf(f, " %s",
+				sprint_percent(reorder->correlation, b1));
+	}
+
+	if (corrupt && corrupt->probability) {
+		fprintf(f, " corrupt %s",
+			sprint_percent(corrupt->probability, b1));
+		if (corrupt->correlation)
+			fprintf(f, " %s",
+				sprint_percent(corrupt->correlation, b1));
+	}
+
+	if (rate && rate->rate) {
+		fprintf(f, " rate %s", sprint_rate(rate->rate, b1));
+		if (rate->packet_overhead)
+			fprintf(f, " packetoverhead %d", rate->packet_overhead);
+		if (rate->cell_size)
+			fprintf(f, " cellsize %u", rate->cell_size);
+		if (rate->cell_overhead)
+			fprintf(f, " celloverhead %d", rate->cell_overhead);
+	}
+
+	if (qopt.gap)
+		fprintf(f, " gap %lu", (unsigned long)qopt.gap);
+
+	return 0;
+}
+
+struct qdisc_util netem_qdisc_util = {
+	.id	   	= "netem",
+	.parse_qopt	= netem_parse_opt,
+	.print_qopt	= netem_print_opt,
+};
+