Adding upstream version 6.8.0.upstream/6.8.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 196 insertions, 0 deletions

diff --git a/ip/iplink_amt.c b/ip/iplink_amt.c
new file mode 100644
index 0000000..3a35bd9
--- /dev/null
+++ b/ip/iplink_amt.c
@@ -0,0 +1,196 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * iplink_amt.c	AMT device support
+ *
+ * Authors:	Taehee Yoo <ap420073@gmail.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <net/if.h>
+#include <linux/ip.h>
+#include <linux/if_link.h>
+#include <arpa/inet.h>
+#include <linux/amt.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+#define AMT_ATTRSET(attrs, type) (((attrs) & (1L << (type))) != 0)
+
+static void print_usage(FILE *f)
+{
+	fprintf(f,
+		"Usage: ... amt\n"
+		"               [ discovery IP_ADDRESS ]\n"
+		"               [ mode MODE ]\n"
+		"               [ local ADDR ]\n"
+		"               [ dev PHYS_DEV ]\n"
+		"               [ relay_port PORT ]\n"
+		"               [ gateway_port PORT ]\n"
+		"               [ max_tunnels NUMBER ]\n"
+		"\n"
+		"Where: ADDR	:= { IP_ADDRESS }\n"
+		"       MODE	:= { gateway | relay }\n"
+		);
+}
+
+static char *modename[] = {"gateway", "relay"};
+
+static void usage(void)
+{
+	print_usage(stderr);
+}
+
+static void check_duparg(__u64 *attrs, int type, const char *key,
+		const char *argv)
+{
+	if (!AMT_ATTRSET(*attrs, type)) {
+		*attrs |= (1L << type);
+		return;
+	}
+	duparg2(key, argv);
+}
+
+static int amt_parse_opt(struct link_util *lu, int argc, char **argv,
+			 struct nlmsghdr *n)
+{
+	unsigned int mode, max_tunnels;
+	inet_prefix saddr, daddr;
+	__u64 attrs = 0;
+	__u16 port;
+
+	saddr.family = daddr.family = AF_UNSPEC;
+
+	inet_prefix_reset(&saddr);
+	inet_prefix_reset(&daddr);
+
+	while (argc > 0) {
+		if (strcmp(*argv, "mode") == 0) {
+			NEXT_ARG();
+			if (strcmp(*argv, "gateway") == 0) {
+				mode = 0;
+			} else if (strcmp(*argv, "relay") == 0) {
+				mode = 1;
+			} else {
+				usage();
+				return -1;
+			}
+			addattr32(n, 1024, IFLA_AMT_MODE, mode);
+		} else if (strcmp(*argv, "relay_port") == 0) {
+			NEXT_ARG();
+			if (get_u16(&port, *argv, 0))
+				invarg("relay_port", *argv);
+			addattr16(n, 1024, IFLA_AMT_RELAY_PORT, htons(port));
+		} else if (strcmp(*argv, "gateway_port") == 0) {
+			NEXT_ARG();
+			if (get_u16(&port, *argv, 0))
+				invarg("gateway_port", *argv);
+			addattr16(n, 1024, IFLA_AMT_GATEWAY_PORT, htons(port));
+		} else if (strcmp(*argv, "max_tunnels") == 0) {
+			NEXT_ARG();
+			if (get_u32(&max_tunnels, *argv, 0))
+				invarg("max_tunnels", *argv);
+			addattr32(n, 1024, IFLA_AMT_MAX_TUNNELS, max_tunnels);
+		} else if (strcmp(*argv, "dev") == 0) {
+			unsigned int link;
+
+			NEXT_ARG();
+			link = ll_name_to_index(*argv);
+			if (!link)
+				exit(nodev(*argv));
+			addattr32(n, 1024, IFLA_AMT_LINK, link);
+		} else if (strcmp(*argv, "local") == 0) {
+			NEXT_ARG();
+			check_duparg(&attrs, IFLA_AMT_LOCAL_IP, "local", *argv);
+			get_addr(&saddr, *argv, daddr.family);
+
+			if (is_addrtype_inet(&saddr))
+				addattr_l(n, 1024, IFLA_AMT_LOCAL_IP,
+					  saddr.data, saddr.bytelen);
+		} else if (strcmp(*argv, "discovery") == 0) {
+			NEXT_ARG();
+			check_duparg(&attrs, IFLA_AMT_DISCOVERY_IP,
+				     "discovery", *argv);
+			get_addr(&daddr, *argv, daddr.family);
+			if (is_addrtype_inet(&daddr))
+				addattr_l(n, 1024, IFLA_AMT_DISCOVERY_IP,
+					  daddr.data, daddr.bytelen);
+		} else if (strcmp(*argv, "help") == 0) {
+			usage();
+			return -1;
+		} else {
+			fprintf(stderr, "amt: unknown command \"%s\"?\n", *argv);
+			usage();
+			return -1;
+		}
+		argc--, argv++;
+	}
+
+	return 0;
+}
+
+static void amt_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+	if (!tb)
+		return;
+
+	if (tb[IFLA_AMT_MODE])
+		print_string(PRINT_ANY, "mode", "%s ",
+			     modename[rta_getattr_u32(tb[IFLA_AMT_MODE])]);
+
+	if (tb[IFLA_AMT_GATEWAY_PORT])
+		print_uint(PRINT_ANY, "gateway_port", "gateway_port %u ",
+			   rta_getattr_be16(tb[IFLA_AMT_GATEWAY_PORT]));
+
+	if (tb[IFLA_AMT_RELAY_PORT])
+		print_uint(PRINT_ANY, "relay_port", "relay_port %u ",
+			   rta_getattr_be16(tb[IFLA_AMT_RELAY_PORT]));
+
+	if (tb[IFLA_AMT_LOCAL_IP]) {
+		__be32 addr = rta_getattr_u32(tb[IFLA_AMT_LOCAL_IP]);
+
+		print_string(PRINT_ANY, "local", "local %s ",
+			     format_host(AF_INET, 4, &addr));
+	}
+
+	if (tb[IFLA_AMT_REMOTE_IP]) {
+		__be32 addr = rta_getattr_u32(tb[IFLA_AMT_REMOTE_IP]);
+
+		print_string(PRINT_ANY, "remote", "remote %s ",
+			     format_host(AF_INET, 4, &addr));
+	}
+
+	if (tb[IFLA_AMT_DISCOVERY_IP]) {
+		__be32 addr = rta_getattr_u32(tb[IFLA_AMT_DISCOVERY_IP]);
+
+		print_string(PRINT_ANY, "discovery", "discovery %s ",
+			     format_host(AF_INET, 4, &addr));
+	}
+
+	if (tb[IFLA_AMT_LINK]) {
+		unsigned int link = rta_getattr_u32(tb[IFLA_AMT_LINK]);
+
+		print_string(PRINT_ANY, "link", "dev %s ",
+			     ll_index_to_name(link));
+	}
+
+	if (tb[IFLA_AMT_MAX_TUNNELS])
+		print_uint(PRINT_ANY, "max_tunnels", "max_tunnels %u ",
+			   rta_getattr_u32(tb[IFLA_AMT_MAX_TUNNELS]));
+}
+
+static void amt_print_help(struct link_util *lu, int argc, char **argv, FILE *f)
+{
+	print_usage(f);
+}
+
+struct link_util amt_link_util = {
+	.id		= "amt",
+	.maxattr	= IFLA_AMT_MAX,
+	.parse_opt	= amt_parse_opt,
+	.print_opt	= amt_print_opt,
+	.print_help	= amt_print_help,
+};