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

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/networking/brctl.c b/ap/app/busybox/src/networking/brctl.c
new file mode 100644
index 0000000..207b069
--- /dev/null
+++ b/ap/app/busybox/src/networking/brctl.c
@@ -0,0 +1,316 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Small implementation of brctl for busybox.
+ *
+ * Copyright (C) 2008 by Bernhard Reutner-Fischer
+ *
+ * Some helper functions from bridge-utils are
+ * Copyright (C) 2000 Lennert Buytenhek
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+/* This applet currently uses only the ioctl interface and no sysfs at all.
+ * At the time of this writing this was considered a feature.
+ */
+
+//usage:#define brctl_trivial_usage
+//usage:       "COMMAND [BRIDGE [INTERFACE]]"
+//usage:#define brctl_full_usage "\n\n"
+//usage:       "Manage ethernet bridges\n"
+//usage:     "\nCommands:"
+//usage:	IF_FEATURE_BRCTL_SHOW(
+//usage:     "\n	show			Show a list of bridges"
+//usage:	)
+//usage:     "\n	addbr BRIDGE		Create BRIDGE"
+//usage:     "\n	delbr BRIDGE		Delete BRIDGE"
+//usage:     "\n	addif BRIDGE IFACE	Add IFACE to BRIDGE"
+//usage:     "\n	delif BRIDGE IFACE	Delete IFACE from BRIDGE"
+//usage:	IF_FEATURE_BRCTL_FANCY(
+//usage:     "\n	setageing BRIDGE TIME		Set ageing time"
+//usage:     "\n	setfd BRIDGE TIME		Set bridge forward delay"
+//usage:     "\n	sethello BRIDGE TIME		Set hello time"
+//usage:     "\n	setmaxage BRIDGE TIME		Set max message age"
+//usage:     "\n	setpathcost BRIDGE COST		Set path cost"
+//usage:     "\n	setportprio BRIDGE PRIO		Set port priority"
+//usage:     "\n	setbridgeprio BRIDGE PRIO	Set bridge priority"
+//usage:     "\n	stp BRIDGE [1/yes/on|0/no/off]	STP on/off"
+//usage:	)
+
+#include "libbb.h"
+#include <linux/sockios.h>
+#include <net/if.h>
+
+#ifndef SIOCBRADDBR
+# define SIOCBRADDBR BRCTL_ADD_BRIDGE
+#endif
+#ifndef SIOCBRDELBR
+# define SIOCBRDELBR BRCTL_DEL_BRIDGE
+#endif
+#ifndef SIOCBRADDIF
+# define SIOCBRADDIF BRCTL_ADD_IF
+#endif
+#ifndef SIOCBRDELIF
+# define SIOCBRDELIF BRCTL_DEL_IF
+#endif
+
+
+/* Maximum number of ports supported per bridge interface.  */
+#ifndef MAX_PORTS
+# define MAX_PORTS 32
+#endif
+
+/* Use internal number parsing and not the "exact" conversion.  */
+/* #define BRCTL_USE_INTERNAL 0 */ /* use exact conversion */
+#define BRCTL_USE_INTERNAL 1
+
+#if ENABLE_FEATURE_BRCTL_FANCY
+# include <linux/if_bridge.h>
+
+/* FIXME: These 4 funcs are not really clean and could be improved */
+static ALWAYS_INLINE void bb_strtotimeval(struct timeval *tv,
+		const char *time_str)
+{
+	double secs;
+# if BRCTL_USE_INTERNAL
+	char *endptr;
+	secs = /*bb_*/strtod(time_str, &endptr);
+	if (endptr == time_str)
+# else
+	if (sscanf(time_str, "%lf", &secs) != 1)
+# endif
+		bb_error_msg_and_die(bb_msg_invalid_arg, time_str, "timespec");
+	tv->tv_sec = secs;
+	tv->tv_usec = 1000000 * (secs - tv->tv_sec);
+}
+
+static ALWAYS_INLINE unsigned long tv_to_jiffies(const struct timeval *tv)
+{
+	unsigned long long jif;
+
+	jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
+
+	return jif/10000;
+}
+# if 0
+static void jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
+{
+	unsigned long long tvusec;
+
+	tvusec = 10000ULL*jiffies;
+	tv->tv_sec = tvusec/1000000;
+	tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
+}
+# endif
+static unsigned long str_to_jiffies(const char *time_str)
+{
+	struct timeval tv;
+	bb_strtotimeval(&tv, time_str);
+	return tv_to_jiffies(&tv);
+}
+
+static void arm_ioctl(unsigned long *args,
+		unsigned long arg0, unsigned long arg1, unsigned long arg2)
+{
+	args[0] = arg0;
+	args[1] = arg1;
+	args[2] = arg2;
+	args[3] = 0;
+}
+#endif
+
+
+int brctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int brctl_main(int argc UNUSED_PARAM, char **argv)
+{
+	static const char keywords[] ALIGN1 =
+		"addbr\0" "delbr\0" "addif\0" "delif\0"
+	IF_FEATURE_BRCTL_FANCY(
+		"stp\0"
+		"setageing\0" "setfd\0" "sethello\0" "setmaxage\0"
+		"setpathcost\0" "setportprio\0" "setbridgeprio\0"
+	)
+	IF_FEATURE_BRCTL_SHOW("show\0");
+
+	enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
+		IF_FEATURE_BRCTL_FANCY(,
+			ARG_stp,
+			ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
+			ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio
+		)
+		IF_FEATURE_BRCTL_SHOW(, ARG_show)
+	};
+
+	int fd;
+	smallint key;
+	struct ifreq ifr;
+	char *br, *brif;
+
+	argv++;
+	while (*argv) {
+#if ENABLE_FEATURE_BRCTL_FANCY
+		int ifidx[MAX_PORTS];
+		unsigned long args[4];
+		ifr.ifr_data = (char *) &args;
+#endif
+
+		key = index_in_strings(keywords, *argv);
+		if (key == -1) /* no match found in keywords array, bail out. */
+			bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
+		argv++;
+		fd = xsocket(AF_INET, SOCK_STREAM, 0);
+
+#if ENABLE_FEATURE_BRCTL_SHOW
+		if (key == ARG_show) { /* show */
+			char brname[IFNAMSIZ];
+			int bridx[MAX_PORTS];
+			int i, num;
+			arm_ioctl(args, BRCTL_GET_BRIDGES,
+						(unsigned long) bridx, MAX_PORTS);
+			num = xioctl(fd, SIOCGIFBR, args);
+			printf("bridge name\tbridge id\t\tSTP enabled\tinterfaces\n");
+			for (i = 0; i < num; i++) {
+				char ifname[IFNAMSIZ];
+				int j, tabs;
+				struct __bridge_info bi;
+				unsigned char *x;
+
+				if (!if_indextoname(bridx[i], brname))
+					bb_perror_msg_and_die("can't get bridge name for index %d", i);
+				strncpy_IFNAMSIZ(ifr.ifr_name, brname);
+
+				arm_ioctl(args, BRCTL_GET_BRIDGE_INFO,
+							(unsigned long) &bi, 0);
+				xioctl(fd, SIOCDEVPRIVATE, &ifr);
+				printf("%s\t\t", brname);
+
+				/* print bridge id */
+				x = (unsigned char *) &bi.bridge_id;
+				for (j = 0; j < 8; j++) {
+					printf("%.2x", x[j]);
+					if (j == 1)
+						bb_putchar('.');
+				}
+				printf(bi.stp_enabled ? "\tyes" : "\tno");
+
+				/* print interface list */
+				arm_ioctl(args, BRCTL_GET_PORT_LIST,
+							(unsigned long) ifidx, MAX_PORTS);
+				xioctl(fd, SIOCDEVPRIVATE, &ifr);
+				tabs = 0;
+				for (j = 0; j < MAX_PORTS; j++) {
+					if (!ifidx[j])
+						continue;
+					if (!if_indextoname(ifidx[j], ifname))
+						bb_perror_msg_and_die("can't get interface name for index %d", j);
+					if (tabs)
+						printf("\t\t\t\t\t");
+					else
+						tabs = 1;
+					printf("\t\t%s\n", ifname);
+				}
+				if (!tabs)  /* bridge has no interfaces */
+					bb_putchar('\n');
+			}
+			goto done;
+		}
+#endif
+
+		if (!*argv) /* all but 'show' need at least one argument */
+			bb_show_usage();
+
+		br = *argv++;
+
+		if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
+			ioctl_or_perror_and_die(fd,
+					key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
+					br, "bridge %s", br);
+			goto done;
+		}
+
+		if (!*argv) /* all but 'addbr/delbr' need at least two arguments */
+			bb_show_usage();
+
+		strncpy_IFNAMSIZ(ifr.ifr_name, br);
+		if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
+			brif = *argv;
+			ifr.ifr_ifindex = if_nametoindex(brif);
+			if (!ifr.ifr_ifindex) {
+				bb_perror_msg_and_die("iface %s", brif);
+			}
+			ioctl_or_perror_and_die(fd,
+					key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
+					&ifr, "bridge %s", br);
+			goto done_next_argv;
+		}
+#if ENABLE_FEATURE_BRCTL_FANCY
+		if (key == ARG_stp) { /* stp */
+			static const char no_yes[] ALIGN1 =
+				"0\0" "off\0" "n\0" "no\0"   /* 0 .. 3 */
+				"1\0" "on\0"  "y\0" "yes\0"; /* 4 .. 7 */
+			int onoff = index_in_strings(no_yes, *argv);
+			if (onoff < 0)
+				bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
+			onoff = (unsigned)onoff / 4;
+			arm_ioctl(args, BRCTL_SET_BRIDGE_STP_STATE, onoff, 0);
+			goto fire;
+		}
+		if ((unsigned)(key - ARG_setageing) < 4) { /* time related ops */
+			static const uint8_t ops[] ALIGN1 = {
+				BRCTL_SET_AGEING_TIME,          /* ARG_setageing */
+				BRCTL_SET_BRIDGE_FORWARD_DELAY, /* ARG_setfd     */
+				BRCTL_SET_BRIDGE_HELLO_TIME,    /* ARG_sethello  */
+				BRCTL_SET_BRIDGE_MAX_AGE        /* ARG_setmaxage */
+			};
+			arm_ioctl(args, ops[key - ARG_setageing], str_to_jiffies(*argv), 0);
+			goto fire;
+		}
+		if (key == ARG_setpathcost
+		 || key == ARG_setportprio
+		 || key == ARG_setbridgeprio
+		) {
+			static const uint8_t ops[] ALIGN1 = {
+				BRCTL_SET_PATH_COST,      /* ARG_setpathcost   */
+				BRCTL_SET_PORT_PRIORITY,  /* ARG_setportprio   */
+				BRCTL_SET_BRIDGE_PRIORITY /* ARG_setbridgeprio */
+			};
+			int port = -1;
+			unsigned arg1, arg2;
+
+			if (key != ARG_setbridgeprio) {
+				/* get portnum */
+				unsigned i;
+
+				port = if_nametoindex(*argv++);
+				if (!port)
+					bb_error_msg_and_die(bb_msg_invalid_arg, *argv, "port");
+				memset(ifidx, 0, sizeof ifidx);
+				arm_ioctl(args, BRCTL_GET_PORT_LIST, (unsigned long)ifidx,
+						MAX_PORTS);
+				xioctl(fd, SIOCDEVPRIVATE, &ifr);
+				for (i = 0; i < MAX_PORTS; i++) {
+					if (ifidx[i] == port) {
+						port = i;
+						break;
+					}
+				}
+			}
+			arg1 = port;
+			arg2 = xatoi_positive(*argv);
+			if (key == ARG_setbridgeprio) {
+				arg1 = arg2;
+				arg2 = 0;
+			}
+			arm_ioctl(args, ops[key - ARG_setpathcost], arg1, arg2);
+		}
+ fire:
+		/* Execute the previously set command */
+		xioctl(fd, SIOCDEVPRIVATE, &ifr);
+#endif
+ done_next_argv:
+		argv++;
+ done:
+		close(fd);
+	}
+
+	return EXIT_SUCCESS;
+}