Adding upstream version 4.99.4.upstream/4.99.4

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

1 files changed, 219 insertions, 0 deletions

diff --git a/print-dsa.c b/print-dsa.c
new file mode 100644
index 0000000..1ed9acf
--- /dev/null
+++ b/print-dsa.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* \summary: Marvell (Ethertype) Distributed Switch Architecture printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h"
+#include "ethertype.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+/*
+ * Format of (Ethertyped or not) DSA tagged frames:
+ *
+ *      7   6   5   4   3   2   1   0
+ *    .   .   .   .   .   .   .   .   .
+ *  0 +---+---+---+---+---+---+---+---+
+ *    |   Ether Destination Address   |
+ * +6 +---+---+---+---+---+---+---+---+
+ *    |     Ether Source Address      |
+ * +6 +---+---+---+---+---+---+---+---+  +-
+ *    |  Prog. DSA Ether Type [15:8]  |  | (8-byte) EDSA Tag
+ * +1 +---+---+---+---+---+---+---+---+  | Contains a programmable Ether type,
+ *    |  Prog. DSA Ether Type [7:0]   |  | two reserved bytes (always 0),
+ * +1 +---+---+---+---+---+---+---+---+  | and a standard DSA tag.
+ *    |     Reserved (0x00 0x00)      |  |
+ * +2 +---+---+---+---+---+---+---+---+  |  +-
+ *    | Mode  |b29|    Src/Trg Dev    |  |  | (4-byte) DSA Tag
+ * +1 +---+---+---+---+---+---+---+---+  |  | Contains a DSA tag mode,
+ *    |Src/Trg Port/Trunk |b18|b17|b16|  |  | source or target switch device,
+ * +1 +---+---+---+---+---+---+---+---+  |  | source or target port or trunk,
+ *    | PRI [2:0] |b12|  VID [11:8]   |  |  | and misc (IEEE and FPri) bits.
+ * +1 +---+---+---+---+---+---+---+---+  |  |
+ *    |           VID [7:0]           |  |  |
+ * +1 +---+---+---+---+---+---+---+---+  +- +-
+ *    |       Ether Length/Type       |
+ * +2 +---+---+---+---+---+---+---+---+
+ *    .   .   .   .   .   .   .   .   .
+ *
+ * Mode: Forward, To_CPU, From_CPU, To_Sniffer
+ * b29: (Source or Target) IEEE Tag Mode
+ * b18: Forward's Src_Is_Trunk, To_CPU's Code[2], To_Sniffer's Rx_Sniff
+ * b17: To_CPU's Code[1]
+ * b16: Original frame's CFI
+ * b12: To_CPU's Code[0]
+ */
+
+#define TOK(tag, byte, mask, shift) ((GET_U_1(&(((const u_char *) tag)[byte])) & (mask)) >> (shift))
+
+#define DSA_LEN 4
+#define DSA_MODE(tag) TOK(tag, 0, 0xc0, 6)
+#define  DSA_MODE_TO_CPU 0x0
+#define  DSA_MODE_FROM_CPU 0x1
+#define  DSA_MODE_TO_SNIFFER 0x2
+#define  DSA_MODE_FORWARD 0x3
+#define DSA_TAGGED(tag) TOK(tag, 0, 0x20, 5)
+#define DSA_DEV(tag) TOK(tag, 0, 0x1f, 0)
+#define DSA_PORT(tag) TOK(tag, 1, 0xf8, 3)
+#define DSA_TRUNK(tag) TOK(tag, 1, 0x04, 2)
+#define DSA_RX_SNIFF(tag) TOK(tag, 1, 0x04, 2)
+#define DSA_CFI(tag) TOK(tag, 1, 0x01, 0)
+#define DSA_PRI(tag) TOK(tag, 2, 0xe0, 5)
+#define DSA_VID(tag) ((u_short)((TOK(tag, 2, 0x0f, 0) << 8) | (TOK(tag, 3, 0xff, 0))))
+#define DSA_CODE(tag) ((TOK(tag, 1, 0x06, 1) << 1) | TOK(tag, 2, 0x10, 4))
+
+#define EDSA_LEN 8
+
+static const struct tok dsa_mode_values[] = {
+	{ DSA_MODE_TO_CPU, "To CPU" },
+	{ DSA_MODE_FROM_CPU, "From CPU" },
+	{ DSA_MODE_TO_SNIFFER, "To Sniffer"},
+	{ DSA_MODE_FORWARD, "Forward" },
+	{ 0, NULL }
+};
+
+static const struct tok dsa_code_values[] = {
+	{ 0x0, "BPDU (MGMT) Trap" },
+	{ 0x1, "Frame2Reg" },
+	{ 0x2, "IGMP/MLD Trap" },
+	{ 0x3, "Policy Trap" },
+	{ 0x4, "ARP Mirror" },
+	{ 0x5, "Policy Mirror" },
+	{ 0, NULL }
+};
+
+static void
+tag_common_print(netdissect_options *ndo, const u_char *p)
+{
+	if (ndo->ndo_eflag) {
+		ND_PRINT("mode %s, ", tok2str(dsa_mode_values, "unknown", DSA_MODE(p)));
+
+		switch (DSA_MODE(p)) {
+		case DSA_MODE_FORWARD:
+			ND_PRINT("dev %u, %s %u, ", DSA_DEV(p),
+				 DSA_TRUNK(p) ? "trunk" : "port", DSA_PORT(p));
+			break;
+		case DSA_MODE_FROM_CPU:
+			ND_PRINT("target dev %u, port %u, ",
+				 DSA_DEV(p), DSA_PORT(p));
+			break;
+		case DSA_MODE_TO_CPU:
+			ND_PRINT("source dev %u, port %u, ",
+				 DSA_DEV(p), DSA_PORT(p));
+			ND_PRINT("code %s, ",
+				 tok2str(dsa_code_values, "reserved", DSA_CODE(p)));
+			break;
+		case DSA_MODE_TO_SNIFFER:
+			ND_PRINT("source dev %u, port %u, ",
+				 DSA_DEV(p), DSA_PORT(p));
+			ND_PRINT("%s sniff, ",
+				 DSA_RX_SNIFF(p) ? "ingress" : "egress");
+			break;
+		default:
+			break;
+		}
+
+		ND_PRINT("%s, ", DSA_TAGGED(p) ? "tagged" : "untagged");
+		ND_PRINT("%s", DSA_CFI(p) ? "CFI, " : "");
+		ND_PRINT("VID %u, ", DSA_VID(p));
+		ND_PRINT("FPri %u, ", DSA_PRI(p));
+	} else {
+		switch (DSA_MODE(p)) {
+		case DSA_MODE_FORWARD:
+			ND_PRINT("Forward %s %u.%u, ",
+				 DSA_TRUNK(p) ? "trunk" : "port",
+				 DSA_DEV(p), DSA_PORT(p));
+			break;
+		case DSA_MODE_FROM_CPU:
+			ND_PRINT("CPU > port %u.%u, ",
+				 DSA_DEV(p), DSA_PORT(p));
+			break;
+		case DSA_MODE_TO_CPU:
+			ND_PRINT("port %u.%u > CPU, ",
+				 DSA_DEV(p), DSA_PORT(p));
+			break;
+		case DSA_MODE_TO_SNIFFER:
+			ND_PRINT("port %u.%u > %s Sniffer, ",
+				 DSA_DEV(p), DSA_PORT(p),
+				 DSA_RX_SNIFF(p) ? "Rx" : "Tx");
+			break;
+		default:
+			break;
+		}
+
+		ND_PRINT("VLAN %u%c, ", DSA_VID(p), DSA_TAGGED(p) ? 't' : 'u');
+	}
+}
+
+static void
+dsa_tag_print(netdissect_options *ndo, const u_char *bp)
+{
+	if (ndo->ndo_eflag)
+		ND_PRINT("Marvell DSA ");
+	else
+		ND_PRINT("DSA ");
+	tag_common_print(ndo, bp);
+}
+
+static void
+edsa_tag_print(netdissect_options *ndo, const u_char *bp)
+{
+	const u_char *p = bp;
+	uint16_t edsa_etype;
+
+	edsa_etype = GET_BE_U_2(p);
+	if (ndo->ndo_eflag) {
+		ND_PRINT("Marvell EDSA ethertype 0x%04x (%s), ", edsa_etype,
+			 tok2str(ethertype_values, "Unknown", edsa_etype));
+		ND_PRINT("rsvd %u %u, ", GET_U_1(p + 2), GET_U_1(p + 3));
+	} else
+		ND_PRINT("EDSA 0x%04x, ", edsa_etype);
+	p += 4;
+	tag_common_print(ndo, p);
+}
+
+void
+dsa_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+
+	ndo->ndo_protocol = "dsa";
+	ndo->ndo_ll_hdr_len +=
+		ether_switch_tag_print(ndo, p, length, caplen, dsa_tag_print, DSA_LEN);
+}
+
+void
+edsa_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+
+	ndo->ndo_protocol = "edsa";
+	ndo->ndo_ll_hdr_len +=
+		ether_switch_tag_print(ndo, p, length, caplen, edsa_tag_print, EDSA_LEN);
+}