Adding upstream version 6.8.0.upstream/6.8.0

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

1 files changed, 329 insertions, 0 deletions

diff --git a/ip/iplink_macvlan.c b/ip/iplink_macvlan.c
new file mode 100644
index 0000000..6bdc76d
--- /dev/null
+++ b/ip/iplink_macvlan.c
@@ -0,0 +1,329 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * iplink_macvlan.c	macvlan/macvtap device support
+ *
+ * Authors:     Patrick McHardy <kaber@trash.net>
+ *		Arnd Bergmann <arnd@arndb.de>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <linux/if_link.h>
+#include <linux/if_ether.h>
+
+#include "rt_names.h"
+#include "utils.h"
+#include "ip_common.h"
+
+#define pfx_err(lu, ...) {               \
+	fprintf(stderr, "%s: ", lu->id); \
+	fprintf(stderr, __VA_ARGS__);    \
+	fprintf(stderr, "\n");           \
+}
+
+static void print_explain(struct link_util *lu, FILE *f)
+{
+	fprintf(f,
+		"Usage: ... %s mode MODE [flag MODE_FLAG] MODE_OPTS [bcqueuelen BC_QUEUE_LEN] [bclim BCLIM]\n"
+		"\n"
+		"MODE: private | vepa | bridge | passthru | source\n"
+		"MODE_FLAG: null | nopromisc | nodst\n"
+		"MODE_OPTS: for mode \"source\":\n"
+		"\tmacaddr { { add | del } <macaddr> | set [ <macaddr> [ <macaddr>  ... ] ] | flush }\n"
+		"BC_QUEUE_LEN: Length of the rx queue for broadcast/multicast: [0-4294967295]\n"
+		"BCLIM: Threshold for broadcast queueing: 32-bit integer\n",
+		lu->id
+	);
+}
+
+static void explain(struct link_util *lu)
+{
+	print_explain(lu, stderr);
+}
+
+
+static int mode_arg(const char *arg)
+{
+	fprintf(stderr,
+		"Error: argument of \"mode\" must be \"private\", \"vepa\", \"bridge\", \"passthru\" or \"source\", not \"%s\"\n",
+		arg);
+	return -1;
+}
+
+static int flag_arg(const char *arg)
+{
+	fprintf(stderr,
+		"Error: argument of \"flag\" must be \"nopromisc\", \"nodst\" or \"null\", not \"%s\"\n",
+		arg);
+	return -1;
+}
+
+static int bc_queue_len_arg(const char *arg)
+{
+	fprintf(stderr,
+		"Error: argument of \"bcqueuelen\" must be a positive integer [0-4294967295], not \"%s\"\n",
+		arg);
+	return -1;
+}
+
+static int bclim_arg(const char *arg)
+{
+	fprintf(stderr, "Error: illegal value for \"bclim\": \"%s\"\n", arg);
+	return -1;
+}
+
+static int macvlan_parse_opt(struct link_util *lu, int argc, char **argv,
+			  struct nlmsghdr *n)
+{
+	__u32 mode = 0;
+	__u16 flags = 0;
+	__u32 mac_mode = 0;
+	int has_flags = 0;
+	char mac[ETH_ALEN];
+	struct rtattr *nmac;
+
+	while (argc > 0) {
+		if (matches(*argv, "mode") == 0) {
+			NEXT_ARG();
+
+			if (strcmp(*argv, "private") == 0)
+				mode = MACVLAN_MODE_PRIVATE;
+			else if (strcmp(*argv, "vepa") == 0)
+				mode = MACVLAN_MODE_VEPA;
+			else if (strcmp(*argv, "bridge") == 0)
+				mode = MACVLAN_MODE_BRIDGE;
+			else if (strcmp(*argv, "passthru") == 0)
+				mode = MACVLAN_MODE_PASSTHRU;
+			else if (strcmp(*argv, "source") == 0)
+				mode = MACVLAN_MODE_SOURCE;
+			else
+				return mode_arg(*argv);
+		} else if (matches(*argv, "flag") == 0) {
+			NEXT_ARG();
+
+			if (strcmp(*argv, "nopromisc") == 0)
+				flags |= MACVLAN_FLAG_NOPROMISC;
+			else if (strcmp(*argv, "nodst") == 0)
+				flags |= MACVLAN_FLAG_NODST;
+			else if (strcmp(*argv, "null") == 0)
+				flags |= 0;
+			else
+				return flag_arg(*argv);
+
+			has_flags = 1;
+
+		} else if (matches(*argv, "macaddr") == 0) {
+			NEXT_ARG();
+
+			if (strcmp(*argv, "add") == 0) {
+				mac_mode = MACVLAN_MACADDR_ADD;
+			} else if (strcmp(*argv, "del") == 0) {
+				mac_mode = MACVLAN_MACADDR_DEL;
+			} else if (strcmp(*argv, "set") == 0) {
+				mac_mode = MACVLAN_MACADDR_SET;
+			} else if (strcmp(*argv, "flush") == 0) {
+				mac_mode = MACVLAN_MACADDR_FLUSH;
+			} else {
+				explain(lu);
+				return -1;
+			}
+
+			addattr32(n, 1024, IFLA_MACVLAN_MACADDR_MODE, mac_mode);
+
+			if (mac_mode == MACVLAN_MACADDR_ADD ||
+			    mac_mode == MACVLAN_MACADDR_DEL) {
+				NEXT_ARG();
+
+				if (ll_addr_a2n(mac, sizeof(mac),
+						*argv) != ETH_ALEN)
+					return -1;
+
+				addattr_l(n, 1024, IFLA_MACVLAN_MACADDR, &mac,
+					  ETH_ALEN);
+			}
+
+			if (mac_mode == MACVLAN_MACADDR_SET) {
+				nmac = addattr_nest(n, 1024,
+						    IFLA_MACVLAN_MACADDR_DATA);
+				while (NEXT_ARG_OK()) {
+					NEXT_ARG_FWD();
+
+					if (ll_addr_a2n(mac, sizeof(mac),
+							*argv) != ETH_ALEN) {
+						PREV_ARG();
+						break;
+					}
+
+					addattr_l(n, 1024, IFLA_MACVLAN_MACADDR,
+						  &mac, ETH_ALEN);
+				}
+				addattr_nest_end(n, nmac);
+			}
+		} else if (matches(*argv, "nopromisc") == 0) {
+			flags |= MACVLAN_FLAG_NOPROMISC;
+			has_flags = 1;
+		} else if (matches(*argv, "nodst") == 0) {
+			flags |= MACVLAN_FLAG_NODST;
+			has_flags = 1;
+		} else if (matches(*argv, "bcqueuelen") == 0) {
+			__u32 bc_queue_len;
+			NEXT_ARG();
+
+			if (get_u32(&bc_queue_len, *argv, 0)) {
+				return bc_queue_len_arg(*argv);
+			}
+			addattr32(n, 1024, IFLA_MACVLAN_BC_QUEUE_LEN, bc_queue_len);
+		} else if (!strcmp(*argv, "bclim")) {
+			__s32 bclim;
+			NEXT_ARG();
+
+			if (get_s32(&bclim, *argv, 0)) {
+				return bclim_arg(*argv);
+			}
+			addattr_l(n, 1024, IFLA_MACVLAN_BC_CUTOFF,
+				  &bclim, sizeof(bclim));
+		} else if (matches(*argv, "help") == 0) {
+			explain(lu);
+			return -1;
+		} else {
+			pfx_err(lu, "unknown option \"%s\"?", *argv);
+			explain(lu);
+			return -1;
+		}
+		argc--, argv++;
+	}
+
+	if (mode)
+		addattr32(n, 1024, IFLA_MACVLAN_MODE, mode);
+
+	if (has_flags) {
+		if (flags & MACVLAN_FLAG_NOPROMISC &&
+		    mode != MACVLAN_MODE_PASSTHRU) {
+			pfx_err(lu, "nopromisc flag only valid in passthru mode");
+			explain(lu);
+			return -1;
+		}
+		addattr16(n, 1024, IFLA_MACVLAN_FLAGS, flags);
+	}
+	return 0;
+}
+
+static void macvlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+	__u32 mode;
+	__u16 flags;
+	__u32 count;
+	unsigned char *addr;
+	int len;
+	struct rtattr *rta;
+
+	if (!tb)
+		return;
+
+	if (!tb[IFLA_MACVLAN_MODE] ||
+	    RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32))
+		return;
+
+	mode = rta_getattr_u32(tb[IFLA_MACVLAN_MODE]);
+	print_string(PRINT_ANY,
+		     "mode",
+		     "mode %s ",
+		     mode == MACVLAN_MODE_PRIVATE ? "private"
+		     : mode == MACVLAN_MODE_VEPA    ? "vepa"
+		     : mode == MACVLAN_MODE_BRIDGE  ? "bridge"
+		     : mode == MACVLAN_MODE_PASSTHRU  ? "passthru"
+		     : mode == MACVLAN_MODE_SOURCE  ? "source"
+		     :				 "unknown");
+
+	if (!tb[IFLA_MACVLAN_FLAGS] ||
+	    RTA_PAYLOAD(tb[IFLA_MACVLAN_FLAGS]) < sizeof(__u16))
+		flags = 0;
+	else
+		flags = rta_getattr_u16(tb[IFLA_MACVLAN_FLAGS]);
+
+	if (flags & MACVLAN_FLAG_NOPROMISC)
+		print_bool(PRINT_ANY, "nopromisc", "nopromisc ", true);
+
+	if (flags & MACVLAN_FLAG_NODST)
+		print_bool(PRINT_ANY, "nodst", "nodst ", true);
+
+	if (tb[IFLA_MACVLAN_BC_QUEUE_LEN] &&
+		RTA_PAYLOAD(tb[IFLA_MACVLAN_BC_QUEUE_LEN]) >= sizeof(__u32)) {
+		__u32 bc_queue_len = rta_getattr_u32(tb[IFLA_MACVLAN_BC_QUEUE_LEN]);
+		print_luint(PRINT_ANY, "bcqueuelen", "bcqueuelen %lu ", bc_queue_len);
+	}
+
+	if (tb[IFLA_MACVLAN_BC_QUEUE_LEN_USED] &&
+		RTA_PAYLOAD(tb[IFLA_MACVLAN_BC_QUEUE_LEN_USED]) >= sizeof(__u32)) {
+		__u32 bc_queue_len = rta_getattr_u32(tb[IFLA_MACVLAN_BC_QUEUE_LEN_USED]);
+		print_luint(PRINT_ANY, "usedbcqueuelen", "usedbcqueuelen %lu ", bc_queue_len);
+	}
+
+	if (tb[IFLA_MACVLAN_BC_CUTOFF] &&
+		RTA_PAYLOAD(tb[IFLA_MACVLAN_BC_CUTOFF]) >= sizeof(__s32)) {
+		__s32 bclim = rta_getattr_s32(tb[IFLA_MACVLAN_BC_CUTOFF]);
+		print_int(PRINT_ANY, "bclim", "bclim %d ", bclim);
+	}
+
+	/* in source mode, there are more options to print */
+
+	if (mode != MACVLAN_MODE_SOURCE)
+		return;
+
+	if (!tb[IFLA_MACVLAN_MACADDR_COUNT] ||
+	    RTA_PAYLOAD(tb[IFLA_MACVLAN_MACADDR_COUNT]) < sizeof(__u32))
+		return;
+
+	count = rta_getattr_u32(tb[IFLA_MACVLAN_MACADDR_COUNT]);
+	print_int(PRINT_ANY, "macaddr_count", "remotes (%d) ", count);
+
+	if (!tb[IFLA_MACVLAN_MACADDR_DATA])
+		return;
+
+	rta = RTA_DATA(tb[IFLA_MACVLAN_MACADDR_DATA]);
+	len = RTA_PAYLOAD(tb[IFLA_MACVLAN_MACADDR_DATA]);
+
+	open_json_array(PRINT_JSON, "macaddr_data");
+	for (; RTA_OK(rta, len); rta = RTA_NEXT(rta, len)) {
+		if (rta->rta_type != IFLA_MACVLAN_MACADDR ||
+		    RTA_PAYLOAD(rta) < 6)
+			continue;
+		addr = RTA_DATA(rta);
+		if (is_json_context()) {
+			SPRINT_BUF(b1);
+
+			snprintf(b1, sizeof(b1),
+				 "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", addr[0],
+				 addr[1], addr[2], addr[3], addr[4], addr[5]);
+			print_string(PRINT_JSON, NULL, NULL, b1);
+		} else {
+			fprintf(f, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x ", addr[0],
+				addr[1], addr[2], addr[3], addr[4], addr[5]);
+		}
+	}
+	close_json_array(PRINT_JSON, NULL);
+}
+
+static void macvlan_print_help(struct link_util *lu, int argc, char **argv,
+			       FILE *f)
+{
+	print_explain(lu, f);
+}
+
+struct link_util macvlan_link_util = {
+	.id		= "macvlan",
+	.maxattr	= IFLA_MACVLAN_MAX,
+	.parse_opt	= macvlan_parse_opt,
+	.print_opt	= macvlan_print_opt,
+	.print_help	= macvlan_print_help,
+};
+
+struct link_util macvtap_link_util = {
+	.id		= "macvtap",
+	.maxattr	= IFLA_MACVLAN_MAX,
+	.parse_opt	= macvlan_parse_opt,
+	.print_opt	= macvlan_print_opt,
+	.print_help	= macvlan_print_help,
+};