Adding upstream version 6.8.0.upstream/6.8.0

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

1 files changed, 266 insertions, 0 deletions

diff --git a/tc/m_skbedit.c b/tc/m_skbedit.c
new file mode 100644
index 0000000..d55a612
--- /dev/null
+++ b/tc/m_skbedit.c
@@ -0,0 +1,266 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * m_skbedit.c		SKB Editing module
+ *
+ * Copyright (c) 2008, Intel Corporation.
+ *
+ * Authors:	Alexander Duyck <alexander.h.duyck@intel.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "utils.h"
+#include "tc_util.h"
+#include <linux/tc_act/tc_skbedit.h>
+#include <linux/if_packet.h>
+
+static void explain(void)
+{
+	fprintf(stderr, "Usage: ... skbedit <[QM] [PM] [MM] [PT] [IF]>\n"
+		"QM = queue_mapping QUEUE_MAPPING\n"
+		"PM = priority PRIORITY\n"
+		"MM = mark MARK[/MASK]\n"
+		"PT = ptype PACKETYPE\n"
+		"IF = inheritdsfield\n"
+		"PACKETYPE = is one of:\n"
+		"  host, otherhost, broadcast, multicast\n"
+		"QUEUE_MAPPING = device transmit queue to use\n"
+		"PRIORITY = classID to assign to priority field\n"
+		"MARK = firewall mark to set\n"
+		"MASK = mask applied to firewall mark (0xffffffff by default)\n"
+		"note: inheritdsfield maps DS field to skb->priority\n");
+}
+
+static void
+usage(void)
+{
+	explain();
+	exit(-1);
+}
+
+static int
+parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
+	      struct nlmsghdr *n)
+{
+	int argc = *argc_p;
+	char **argv = *argv_p;
+	int ok = 0;
+	struct rtattr *tail;
+	unsigned int tmp;
+	__u16 queue_mapping, ptype;
+	__u32 flags = 0, priority, mark, mask;
+	__u64 pure_flags = 0;
+	struct tc_skbedit sel = { 0 };
+
+	if (matches(*argv, "skbedit") != 0)
+		return -1;
+
+	NEXT_ARG();
+
+	while (argc > 0) {
+		if (matches(*argv, "queue_mapping") == 0) {
+			flags |= SKBEDIT_F_QUEUE_MAPPING;
+			NEXT_ARG();
+			if (get_unsigned(&tmp, *argv, 10) || tmp > 65535) {
+				fprintf(stderr, "Illegal queue_mapping\n");
+				return -1;
+			}
+			queue_mapping = tmp;
+			ok++;
+		} else if (matches(*argv, "priority") == 0) {
+			flags |= SKBEDIT_F_PRIORITY;
+			NEXT_ARG();
+			if (get_tc_classid(&priority, *argv)) {
+				fprintf(stderr, "Illegal priority\n");
+				return -1;
+			}
+			ok++;
+		} else if (matches(*argv, "mark") == 0) {
+			char *slash;
+
+			NEXT_ARG();
+			slash = strchr(*argv, '/');
+			if (slash)
+				*slash = '\0';
+
+			flags |= SKBEDIT_F_MARK;
+			if (get_u32(&mark, *argv, 0)) {
+				fprintf(stderr, "Illegal mark\n");
+				return -1;
+			}
+
+			if (slash) {
+				if (get_u32(&mask, slash + 1, 0)) {
+					fprintf(stderr, "Illegal mask\n");
+					return -1;
+				}
+				flags |= SKBEDIT_F_MASK;
+			}
+			ok++;
+		} else if (matches(*argv, "ptype") == 0) {
+
+			NEXT_ARG();
+			if (matches(*argv, "host") == 0) {
+				ptype = PACKET_HOST;
+			} else if (matches(*argv, "broadcast") == 0) {
+				ptype = PACKET_BROADCAST;
+			} else if (matches(*argv, "multicast") == 0) {
+				ptype = PACKET_MULTICAST;
+			} else if (matches(*argv, "otherhost") == 0) {
+				ptype = PACKET_OTHERHOST;
+			} else {
+				fprintf(stderr, "Illegal ptype (%s)\n",
+					*argv);
+				return -1;
+			}
+			flags |= SKBEDIT_F_PTYPE;
+			ok++;
+		} else if (matches(*argv, "inheritdsfield") == 0) {
+			pure_flags |= SKBEDIT_F_INHERITDSFIELD;
+			ok++;
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		} else {
+			break;
+		}
+		argc--;
+		argv++;
+	}
+
+	parse_action_control_dflt(&argc, &argv, &sel.action,
+				  false, TC_ACT_PIPE);
+
+	if (argc) {
+		if (matches(*argv, "index") == 0) {
+			NEXT_ARG();
+			if (get_u32(&sel.index, *argv, 10)) {
+				fprintf(stderr, "skbedit: Illegal \"index\"\n");
+				return -1;
+			}
+			argc--;
+			argv++;
+			ok++;
+		}
+	}
+
+	if (!ok) {
+		explain();
+		return -1;
+	}
+
+
+	tail = addattr_nest(n, MAX_MSG, tca_id);
+	addattr_l(n, MAX_MSG, TCA_SKBEDIT_PARMS, &sel, sizeof(sel));
+	if (flags & SKBEDIT_F_QUEUE_MAPPING)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_QUEUE_MAPPING,
+			  &queue_mapping, sizeof(queue_mapping));
+	if (flags & SKBEDIT_F_PRIORITY)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_PRIORITY,
+			  &priority, sizeof(priority));
+	if (flags & SKBEDIT_F_MARK)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_MARK,
+			  &mark, sizeof(mark));
+	if (flags & SKBEDIT_F_MASK)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_MASK,
+			  &mask, sizeof(mask));
+	if (flags & SKBEDIT_F_PTYPE)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_PTYPE,
+			  &ptype, sizeof(ptype));
+	if (pure_flags != 0)
+		addattr64(n, MAX_MSG, TCA_SKBEDIT_FLAGS, pure_flags);
+	addattr_nest_end(n, tail);
+
+	*argc_p = argc;
+	*argv_p = argv;
+	return 0;
+}
+
+static int print_skbedit(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+	struct rtattr *tb[TCA_SKBEDIT_MAX + 1];
+
+	SPRINT_BUF(b1);
+	__u32 priority;
+	__u16 ptype;
+	struct tc_skbedit *p;
+
+	print_string(PRINT_ANY, "kind", "%s ", "skbedit");
+	if (arg == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_SKBEDIT_MAX, arg);
+
+	if (tb[TCA_SKBEDIT_PARMS] == NULL) {
+		fprintf(stderr, "Missing skbedit parameters\n");
+		return -1;
+	}
+	p = RTA_DATA(tb[TCA_SKBEDIT_PARMS]);
+
+	if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) {
+		print_uint(PRINT_ANY, "queue_mapping", "queue_mapping %u",
+			   rta_getattr_u16(tb[TCA_SKBEDIT_QUEUE_MAPPING]));
+	}
+	if (tb[TCA_SKBEDIT_PRIORITY] != NULL) {
+		priority = rta_getattr_u32(tb[TCA_SKBEDIT_PRIORITY]);
+		print_string(PRINT_ANY, "priority", " priority %s",
+			     sprint_tc_classid(priority, b1));
+	}
+	if (tb[TCA_SKBEDIT_MARK] != NULL) {
+		print_uint(PRINT_ANY, "mark", " mark %u",
+			   rta_getattr_u32(tb[TCA_SKBEDIT_MARK]));
+	}
+	if (tb[TCA_SKBEDIT_MASK]) {
+		print_hex(PRINT_ANY, "mask", "/%#x",
+			  rta_getattr_u32(tb[TCA_SKBEDIT_MASK]));
+	}
+	if (tb[TCA_SKBEDIT_PTYPE] != NULL) {
+		ptype = rta_getattr_u16(tb[TCA_SKBEDIT_PTYPE]);
+		if (ptype == PACKET_HOST)
+			print_string(PRINT_ANY, "ptype", " ptype %s", "host");
+		else if (ptype == PACKET_BROADCAST)
+			print_string(PRINT_ANY, "ptype", " ptype %s",
+				     "broadcast");
+		else if (ptype == PACKET_MULTICAST)
+			print_string(PRINT_ANY, "ptype", " ptype %s",
+				     "multicast");
+		else if (ptype == PACKET_OTHERHOST)
+			print_string(PRINT_ANY, "ptype", " ptype %s",
+				     "otherhost");
+		else
+			print_uint(PRINT_ANY, "ptype", " ptype %u", ptype);
+	}
+	if (tb[TCA_SKBEDIT_FLAGS] != NULL) {
+		__u64 flags = rta_getattr_u64(tb[TCA_SKBEDIT_FLAGS]);
+
+		if (flags & SKBEDIT_F_INHERITDSFIELD)
+			print_null(PRINT_ANY, "inheritdsfield", " %s",
+				     "inheritdsfield");
+	}
+
+	print_action_control(f, " ", p->action, "");
+
+	print_nl();
+	print_uint(PRINT_ANY, "index", "\t index %u", p->index);
+	print_int(PRINT_ANY, "ref", " ref %d", p->refcnt);
+	print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt);
+
+	if (show_stats) {
+		if (tb[TCA_SKBEDIT_TM]) {
+			struct tcf_t *tm = RTA_DATA(tb[TCA_SKBEDIT_TM]);
+
+			print_tm(f, tm);
+		}
+	}
+
+	print_nl();
+
+	return 0;
+}
+
+struct action_util skbedit_action_util = {
+	.id = "skbedit",
+	.parse_aopt = parse_skbedit,
+	.print_aopt = print_skbedit,
+};