Adding upstream version 6.1.0.upstream/6.1.0upstream

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

1 files changed, 313 insertions, 0 deletions

diff --git a/tc/m_vlan.c b/tc/m_vlan.c
new file mode 100644
index 0000000..1b2b1d5
--- /dev/null
+++ b/tc/m_vlan.c
@@ -0,0 +1,313 @@
+/*
+ * m_vlan.c		vlan manipulation module
+ *
+ *              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:     Jiri Pirko <jiri@resnulli.us>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <linux/if_ether.h>
+#include "utils.h"
+#include "rt_names.h"
+#include "tc_util.h"
+#include <linux/tc_act/tc_vlan.h>
+
+static const char * const action_names[] = {
+	[TCA_VLAN_ACT_POP] = "pop",
+	[TCA_VLAN_ACT_PUSH] = "push",
+	[TCA_VLAN_ACT_MODIFY] = "modify",
+	[TCA_VLAN_ACT_POP_ETH] = "pop_eth",
+	[TCA_VLAN_ACT_PUSH_ETH] = "push_eth",
+};
+
+static void explain(void)
+{
+	fprintf(stderr,
+		"Usage: vlan pop [CONTROL]\n"
+		"       vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
+		"       vlan modify [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
+		"       vlan pop_eth [CONTROL]\n"
+		"       vlan push_eth dst_mac LLADDR src_mac LLADDR [CONTROL]\n"
+		"       VLANPROTO is one of 802.1Q or 802.1AD\n"
+		"            with default: 802.1Q\n"
+		"       CONTROL := reclassify | pipe | drop | continue | pass |\n"
+		"                  goto chain <CHAIN_INDEX>\n");
+}
+
+static void usage(void)
+{
+	explain();
+	exit(-1);
+}
+
+static bool has_push_attribs(int action)
+{
+	return action == TCA_VLAN_ACT_PUSH || action == TCA_VLAN_ACT_MODIFY;
+}
+
+static void unexpected(const char *arg)
+{
+	fprintf(stderr,
+		"unexpected \"%s\" - action already specified\n",
+		arg);
+	explain();
+}
+
+static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
+		      int tca_id, struct nlmsghdr *n)
+{
+	int argc = *argc_p;
+	char **argv = *argv_p;
+	struct rtattr *tail;
+	int action = 0;
+	char dst_mac[ETH_ALEN] = {};
+	int dst_mac_set = 0;
+	char src_mac[ETH_ALEN] = {};
+	int src_mac_set = 0;
+	__u16 id;
+	int id_set = 0;
+	__u16 proto;
+	int proto_set = 0;
+	__u8 prio;
+	int prio_set = 0;
+	struct tc_vlan parm = {};
+
+	if (matches(*argv, "vlan") != 0)
+		return -1;
+
+	NEXT_ARG();
+
+	while (argc > 0) {
+		if (matches(*argv, "pop") == 0) {
+			if (action) {
+				unexpected(*argv);
+				return -1;
+			}
+			action = TCA_VLAN_ACT_POP;
+		} else if (matches(*argv, "push") == 0) {
+			if (action) {
+				unexpected(*argv);
+				return -1;
+			}
+			action = TCA_VLAN_ACT_PUSH;
+		} else if (matches(*argv, "modify") == 0) {
+			if (action) {
+				unexpected(*argv);
+				return -1;
+			}
+			action = TCA_VLAN_ACT_MODIFY;
+		} else if (matches(*argv, "pop_eth") == 0) {
+			if (action) {
+				unexpected(*argv);
+				return -1;
+			}
+			action = TCA_VLAN_ACT_POP_ETH;
+		} else if (matches(*argv, "push_eth") == 0) {
+			if (action) {
+				unexpected(*argv);
+				return -1;
+			}
+			action = TCA_VLAN_ACT_PUSH_ETH;
+		} else if (matches(*argv, "id") == 0) {
+			if (!has_push_attribs(action))
+				invarg("only valid for push/modify", *argv);
+
+			NEXT_ARG();
+			if (get_u16(&id, *argv, 0))
+				invarg("id is invalid", *argv);
+			id_set = 1;
+		} else if (matches(*argv, "protocol") == 0) {
+			if (!has_push_attribs(action))
+				invarg("only valid for push/modify", *argv);
+
+			NEXT_ARG();
+			if (ll_proto_a2n(&proto, *argv))
+				invarg("protocol is invalid", *argv);
+			proto_set = 1;
+		} else if (matches(*argv, "priority") == 0) {
+			if (!has_push_attribs(action))
+				invarg("only valid for push/modify", *argv);
+
+			NEXT_ARG();
+			if (get_u8(&prio, *argv, 0) || (prio & ~0x7))
+				invarg("prio is invalid", *argv);
+			prio_set = 1;
+		} else if (matches(*argv, "dst_mac") == 0) {
+			if (action != TCA_VLAN_ACT_PUSH_ETH)
+				invarg("only valid for push_eth", *argv);
+
+			NEXT_ARG();
+			if (ll_addr_a2n(dst_mac, sizeof(dst_mac), *argv) < 0)
+				invarg("dst_mac is invalid", *argv);
+			dst_mac_set = 1;
+		} else if (matches(*argv, "src_mac") == 0) {
+			if (action != TCA_VLAN_ACT_PUSH_ETH)
+				invarg("only valid for push_eth", *argv);
+
+			NEXT_ARG();
+			if (ll_addr_a2n(src_mac, sizeof(src_mac), *argv) < 0)
+				invarg("src_mac is invalid", *argv);
+			src_mac_set = 1;
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		} else {
+			break;
+		}
+		argc--;
+		argv++;
+	}
+
+	parse_action_control_dflt(&argc, &argv, &parm.action,
+				  false, TC_ACT_PIPE);
+
+	if (argc) {
+		if (matches(*argv, "index") == 0) {
+			NEXT_ARG();
+			if (get_u32(&parm.index, *argv, 10)) {
+				fprintf(stderr, "vlan: Illegal \"index\"\n");
+				return -1;
+			}
+			argc--;
+			argv++;
+		}
+	}
+
+	if (has_push_attribs(action) && !id_set) {
+		fprintf(stderr, "id needs to be set for %s\n",
+			action_names[action]);
+		explain();
+		return -1;
+	}
+
+	if (action == TCA_VLAN_ACT_PUSH_ETH) {
+		if (!dst_mac_set) {
+			fprintf(stderr, "dst_mac needs to be set for %s\n",
+				action_names[action]);
+			explain();
+			return -1;
+		} else if (!src_mac_set) {
+			fprintf(stderr, "src_mac needs to be set for %s\n",
+				action_names[action]);
+			explain();
+			return -1;
+		}
+	}
+
+	parm.v_action = action;
+	tail = addattr_nest(n, MAX_MSG, tca_id);
+	addattr_l(n, MAX_MSG, TCA_VLAN_PARMS, &parm, sizeof(parm));
+	if (id_set)
+		addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_ID, &id, 2);
+	if (proto_set) {
+		if (proto != htons(ETH_P_8021Q) &&
+		    proto != htons(ETH_P_8021AD)) {
+			fprintf(stderr, "protocol not supported\n");
+			explain();
+			return -1;
+		}
+
+		addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PROTOCOL, &proto, 2);
+	}
+	if (prio_set)
+		addattr8(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PRIORITY, prio);
+	if (dst_mac_set)
+		addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_ETH_DST, dst_mac,
+			  sizeof(dst_mac));
+	if (src_mac_set)
+		addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_ETH_SRC, src_mac,
+			  sizeof(src_mac));
+
+	addattr_nest_end(n, tail);
+
+	*argc_p = argc;
+	*argv_p = argv;
+	return 0;
+}
+
+static int print_vlan(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+	SPRINT_BUF(b1);
+	struct rtattr *tb[TCA_VLAN_MAX + 1];
+	__u16 val;
+	struct tc_vlan *parm;
+
+	print_string(PRINT_ANY, "kind", "%s ", "vlan");
+	if (arg == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_VLAN_MAX, arg);
+
+	if (!tb[TCA_VLAN_PARMS]) {
+		fprintf(stderr, "Missing vlan parameters\n");
+		return -1;
+	}
+	parm = RTA_DATA(tb[TCA_VLAN_PARMS]);
+
+	print_string(PRINT_ANY, "vlan_action", " %s",
+		     action_names[parm->v_action]);
+
+	switch (parm->v_action) {
+	case TCA_VLAN_ACT_PUSH:
+	case TCA_VLAN_ACT_MODIFY:
+		if (tb[TCA_VLAN_PUSH_VLAN_ID]) {
+			val = rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_ID]);
+			print_uint(PRINT_ANY, "id", " id %u", val);
+		}
+		if (tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]) {
+			__u16 proto;
+
+			proto = rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]);
+			print_string(PRINT_ANY, "protocol", " protocol %s",
+				     ll_proto_n2a(proto, b1, sizeof(b1)));
+		}
+		if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) {
+			val = rta_getattr_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);
+			print_uint(PRINT_ANY, "priority", " priority %u", val);
+		}
+		break;
+	case TCA_VLAN_ACT_PUSH_ETH:
+		if (tb[TCA_VLAN_PUSH_ETH_DST] &&
+		    RTA_PAYLOAD(tb[TCA_VLAN_PUSH_ETH_DST]) == ETH_ALEN) {
+			ll_addr_n2a(RTA_DATA(tb[TCA_VLAN_PUSH_ETH_DST]),
+				    ETH_ALEN, 0, b1, sizeof(b1));
+			print_string(PRINT_ANY, "dst_mac", " dst_mac %s", b1);
+		}
+		if (tb[TCA_VLAN_PUSH_ETH_SRC] &&
+		       RTA_PAYLOAD(tb[TCA_VLAN_PUSH_ETH_SRC]) == ETH_ALEN) {
+			ll_addr_n2a(RTA_DATA(tb[TCA_VLAN_PUSH_ETH_SRC]),
+				    ETH_ALEN, 0, b1, sizeof(b1));
+			print_string(PRINT_ANY, "src_mac", " src_mac %s", b1);
+		}
+	}
+	print_action_control(f, " ", parm->action, "");
+
+	print_nl();
+	print_uint(PRINT_ANY, "index", "\t index %u", parm->index);
+	print_int(PRINT_ANY, "ref", " ref %d", parm->refcnt);
+	print_int(PRINT_ANY, "bind", " bind %d", parm->bindcnt);
+
+	if (show_stats) {
+		if (tb[TCA_VLAN_TM]) {
+			struct tcf_t *tm = RTA_DATA(tb[TCA_VLAN_TM]);
+
+			print_tm(f, tm);
+		}
+	}
+
+	print_nl();
+
+	return 0;
+}
+
+struct action_util vlan_action_util = {
+	.id = "vlan",
+	.parse_aopt = parse_vlan,
+	.print_aopt = print_vlan,
+};