Vendor import of tcpdump 4.6.2.

1 files changed, 432 insertions, 0 deletions

diff --git a/print-aoe.c b/print-aoe.c
new file mode 100644
index 0000000..f8bc1fc
--- /dev/null
+++ b/print-aoe.c
@@ -0,0 +1,432 @@
+/*
+ * This module implements decoding of the ATA over Ethernet (AoE) protocol
+ * according to the following specification:
+ * http://support.coraid.com/documents/AoEr11.txt
+ *
+ * Copyright (c) 2014 The TCPDUMP project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define NETDISSECT_REWORKED
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "addrtoname.h"
+#include "ether.h"
+
+static const char tstr[] = " [|aoe]";
+static const char cstr[] = " (corrupt)";
+
+#define AOE_V1 1
+#define ATA_SECTOR_SIZE 512
+
+#define AOEV1_CMD_ISSUE_ATA_COMMAND        0
+#define AOEV1_CMD_QUERY_CONFIG_INFORMATION 1
+#define AOEV1_CMD_MAC_MASK_LIST            2
+#define AOEV1_CMD_RESERVE_RELEASE          3
+
+static const struct tok cmdcode_str[] = {
+	{ AOEV1_CMD_ISSUE_ATA_COMMAND,        "Issue ATA Command"        },
+	{ AOEV1_CMD_QUERY_CONFIG_INFORMATION, "Query Config Information" },
+	{ AOEV1_CMD_MAC_MASK_LIST,            "MAC Mask List"            },
+	{ AOEV1_CMD_RESERVE_RELEASE,          "Reserve/Release"          },
+	{ 0, NULL }
+};
+
+#define AOEV1_COMMON_HDR_LEN    10U /* up to but w/o Arg                */
+#define AOEV1_ISSUE_ARG_LEN     12U /* up to but w/o Data               */
+#define AOEV1_QUERY_ARG_LEN      8U /* up to but w/o Config String      */
+#define AOEV1_MAC_ARG_LEN        4U /* up to but w/o Directive 0        */
+#define AOEV1_RESERVE_ARG_LEN    2U /* up to but w/o Ethernet address 0 */
+#define AOEV1_MAX_CONFSTR_LEN 1024U
+
+#define AOEV1_FLAG_R 0x08
+#define AOEV1_FLAG_E 0x04
+
+static const struct tok aoev1_flag_str[] = {
+	{ AOEV1_FLAG_R, "Response" },
+	{ AOEV1_FLAG_E, "Error"    },
+	{ 0x02,         "MBZ-0x02" },
+	{ 0x01,         "MBZ-0x01" },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_errcode_str[] = {
+	{ 1, "Unrecognized command code" },
+	{ 2, "Bad argument parameter"    },
+	{ 3, "Device unavailable"        },
+	{ 4, "Config string present"     },
+	{ 5, "Unsupported version"       },
+	{ 6, "Target is reserved"        },
+	{ 0, NULL }
+};
+
+#define AOEV1_AFLAG_E 0x40
+#define AOEV1_AFLAG_D 0x10
+#define AOEV1_AFLAG_A 0x02
+#define AOEV1_AFLAG_W 0x01
+
+static const struct tok aoev1_aflag_str[] = {
+	{ 0x08,          "MBZ-0x08" },
+	{ AOEV1_AFLAG_E, "Ext48"    },
+	{ 0x06,          "MBZ-0x06" },
+	{ AOEV1_AFLAG_D, "Device"   },
+	{ 0x04,          "MBZ-0x04" },
+	{ 0x03,          "MBZ-0x03" },
+	{ AOEV1_AFLAG_A, "Async"    },
+	{ AOEV1_AFLAG_W, "Write"    },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_ccmd_str[] = {
+	{ 0, "read config string"        },
+	{ 1, "test config string"        },
+	{ 2, "test config string prefix" },
+	{ 3, "set config string"         },
+	{ 4, "force set config string"   },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_mcmd_str[] = {
+	{ 0, "Read Mac Mask List" },
+	{ 1, "Edit Mac Mask List" },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_merror_str[] = {
+	{ 1, "Unspecified Error"  },
+	{ 2, "Bad DCmd directive" },
+	{ 3, "Mask list full"     },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_dcmd_str[] = {
+	{ 0, "No Directive"                      },
+	{ 1, "Add mac address to mask list"      },
+	{ 2, "Delete mac address from mask list" },
+	{ 0, NULL }
+};
+
+static const struct tok aoev1_rcmd_str[] = {
+	{ 0, "Read reserve list"      },
+	{ 1, "Set reserve list"       },
+	{ 2, "Force set reserve list" },
+	{ 0, NULL }
+};
+
+static void
+aoev1_issue_print(netdissect_options *ndo,
+                  const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+
+	if (len < AOEV1_ISSUE_ARG_LEN)
+		goto corrupt;
+	/* AFlags */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, "\n\tAFlags: [%s]", bittok2str(aoev1_aflag_str, "none", *cp)));
+	cp += 1;
+	/* Err/Feature */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", Err/Feature: %u", *cp));
+	cp += 1;
+	/* Sector Count (not correlated with the length) */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", Sector Count: %u", *cp));
+	cp += 1;
+	/* Cmd/Status */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", Cmd/Status: %u", *cp));
+	cp += 1;
+	/* lba0 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, "\n\tlba0: %u", *cp));
+	cp += 1;
+	/* lba1 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", lba1: %u", *cp));
+	cp += 1;
+	/* lba2 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", lba2: %u", *cp));
+	cp += 1;
+	/* lba3 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", lba3: %u", *cp));
+	cp += 1;
+	/* lba4 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", lba4: %u", *cp));
+	cp += 1;
+	/* lba5 */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", lba5: %u", *cp));
+	cp += 1;
+	/* Reserved */
+	ND_TCHECK2(*cp, 2);
+	cp += 2;
+	/* Data */
+	if (len > AOEV1_ISSUE_ARG_LEN)
+		ND_PRINT((ndo, "\n\tData: %u bytes", len - AOEV1_ISSUE_ARG_LEN));
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+
+static void
+aoev1_query_print(netdissect_options *ndo,
+                  const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+	uint16_t cslen;
+
+	if (len < AOEV1_QUERY_ARG_LEN)
+		goto corrupt;
+	/* Buffer Count */
+	ND_TCHECK2(*cp, 2);
+	ND_PRINT((ndo, "\n\tBuffer Count: %u", EXTRACT_16BITS(cp)));
+	cp += 2;
+	/* Firmware Version */
+	ND_TCHECK2(*cp, 2);
+	ND_PRINT((ndo, ", Firmware Version: %u", EXTRACT_16BITS(cp)));
+	cp += 2;
+	/* Sector Count */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", Sector Count: %u", *cp));
+	cp += 1;
+	/* AoE/CCmd */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", AoE: %u, CCmd: %s", (*cp & 0xF0) >> 4,
+	          tok2str(aoev1_ccmd_str, "Unknown (0x02x)", *cp & 0x0F)));
+	cp += 1;
+	/* Config String Length */
+	ND_TCHECK2(*cp, 2);
+	cslen = EXTRACT_16BITS(cp);
+	cp += 2;
+	if (cslen > AOEV1_MAX_CONFSTR_LEN || AOEV1_QUERY_ARG_LEN + cslen > len)
+		goto corrupt;
+	/* Config String */
+	ND_TCHECK2(*cp, cslen);
+	if (cslen) {
+		ND_PRINT((ndo, "\n\tConfig String (length %u): ", cslen));
+		if (fn_printn(ndo, cp, cslen, ndo->ndo_snapend))
+			goto trunc;
+	}
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+
+static void
+aoev1_mac_print(netdissect_options *ndo,
+                const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+	uint8_t dircount, i;
+
+	if (len < AOEV1_MAC_ARG_LEN)
+		goto corrupt;
+	/* Reserved */
+	ND_TCHECK2(*cp, 1);
+	cp += 1;
+	/* MCmd */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, "\n\tMCmd: %s", tok2str(aoev1_mcmd_str, "Unknown (0x%02x)", *cp)));
+	cp += 1;
+	/* MError */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", MError: %s", tok2str(aoev1_merror_str, "Unknown (0x%02x)", *cp)));
+	cp += 1;
+	/* Dir Count */
+	ND_TCHECK2(*cp, 1);
+	dircount = *cp;
+	cp += 1;
+	ND_PRINT((ndo, ", Dir Count: %u", dircount));
+	if (AOEV1_MAC_ARG_LEN + dircount * 8 > len)
+		goto corrupt;
+	/* directives */
+	for (i = 0; i < dircount; i++) {
+		/* Reserved */
+		ND_TCHECK2(*cp, 1);
+		cp += 1;
+		/* DCmd */
+		ND_TCHECK2(*cp, 1);
+		ND_PRINT((ndo, "\n\t DCmd: %s", tok2str(aoev1_dcmd_str, "Unknown (0x%02x)", *cp)));
+		cp += 1;
+		/* Ethernet Address */
+		ND_TCHECK2(*cp, ETHER_ADDR_LEN);
+		ND_PRINT((ndo, ", Ethernet Address: %s", etheraddr_string(ndo, cp)));
+		cp += ETHER_ADDR_LEN;
+	}
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+
+static void
+aoev1_reserve_print(netdissect_options *ndo,
+                    const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+	uint8_t nmacs, i;
+
+	if (len < AOEV1_RESERVE_ARG_LEN || (len - AOEV1_RESERVE_ARG_LEN) % ETHER_ADDR_LEN)
+		goto corrupt;
+	/* RCmd */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, "\n\tRCmd: %s", tok2str(aoev1_rcmd_str, "Unknown (0x%02x)", *cp)));
+	cp += 1;
+	/* NMacs (correlated with the length) */
+	ND_TCHECK2(*cp, 1);
+	nmacs = *cp;
+	cp += 1;
+	ND_PRINT((ndo, ", NMacs: %u", nmacs));
+	if (AOEV1_RESERVE_ARG_LEN + nmacs * ETHER_ADDR_LEN != len)
+		goto corrupt;
+	/* addresses */
+	for (i = 0; i < nmacs; i++) {
+		ND_PRINT((ndo, "\n\tEthernet Address %u: %s", i, etheraddr_string(ndo, cp)));
+		cp += ETHER_ADDR_LEN;
+	}
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+
+/* cp points to the Ver/Flags octet */
+static void
+aoev1_print(netdissect_options *ndo,
+            const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+	uint8_t flags, command;
+	void (*cmd_decoder)(netdissect_options *, const u_char *, const u_int);
+
+	if (len < AOEV1_COMMON_HDR_LEN)
+		goto corrupt;
+	/* Flags */
+	flags = *cp & 0x0F;
+	ND_PRINT((ndo, ", Flags: [%s]", bittok2str(aoev1_flag_str, "none", flags)));
+	cp += 1;
+	if (! ndo->ndo_vflag)
+		return;
+	/* Error */
+	ND_TCHECK2(*cp, 1);
+	if (flags & AOEV1_FLAG_E)
+		ND_PRINT((ndo, "\n\tError: %s", tok2str(aoev1_errcode_str, "Invalid (%u)", *cp)));
+	cp += 1;
+	/* Major */
+	ND_TCHECK2(*cp, 2);
+	ND_PRINT((ndo, "\n\tMajor: 0x%04x", EXTRACT_16BITS(cp)));
+	cp += 2;
+	/* Minor */
+	ND_TCHECK2(*cp, 1);
+	ND_PRINT((ndo, ", Minor: 0x%02x", *cp));
+	cp += 1;
+	/* Command */
+	ND_TCHECK2(*cp, 1);
+	command = *cp;
+	cp += 1;
+	ND_PRINT((ndo, ", Command: %s", tok2str(cmdcode_str, "Unknown (0x%02x)", command)));
+	/* Tag */
+	ND_TCHECK2(*cp, 4);
+	ND_PRINT((ndo, ", Tag: 0x%08x", EXTRACT_32BITS(cp)));
+	cp += 4;
+	/* Arg */
+	cmd_decoder =
+		command == AOEV1_CMD_ISSUE_ATA_COMMAND        ? aoev1_issue_print :
+		command == AOEV1_CMD_QUERY_CONFIG_INFORMATION ? aoev1_query_print :
+		command == AOEV1_CMD_MAC_MASK_LIST            ? aoev1_mac_print :
+		command == AOEV1_CMD_RESERVE_RELEASE          ? aoev1_reserve_print :
+		NULL;
+	if (cmd_decoder != NULL)
+		cmd_decoder(ndo, cp, len - AOEV1_COMMON_HDR_LEN);
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+
+void
+aoe_print(netdissect_options *ndo,
+          const u_char *cp, const u_int len)
+{
+	const u_char *ep = cp + len;
+	uint8_t ver;
+
+	ND_PRINT((ndo, "AoE length %u", len));
+
+	if (len < 1)
+		goto corrupt;
+	/* Ver/Flags */
+	ND_TCHECK2(*cp, 1);
+	ver = (*cp & 0xF0) >> 4;
+	/* Don't advance cp yet: low order 4 bits are version-specific. */
+	ND_PRINT((ndo, ", Ver %u", ver));
+
+	switch (ver) {
+		case AOE_V1:
+			aoev1_print(ndo, cp, len);
+			break;
+	}
+	return;
+
+corrupt:
+	ND_PRINT((ndo, "%s", cstr));
+	ND_TCHECK2(*cp, ep - cp);
+	return;
+trunc:
+	ND_PRINT((ndo, "%s", tstr));
+}
+