/* \summary: ATA over Ethernet (AoE) protocol printer */
-/* specification: http://brantleycoilecompany.com/AoEr11.pdf */
+/* specification:
+ * https://web.archive.org/web/20161025044402/http://brantleycoilecompany.com/AoEr11.pdf
+ */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
+#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
-static const char tstr[] = " [|aoe]";
#define AOE_V1 1
#define ATA_SECTOR_SIZE 512
static const struct tok aoev1_flag_str[] = {
{ AOEV1_FLAG_R, "Response" },
{ AOEV1_FLAG_E, "Error" },
- { 0x02, "MBZ-0x02" },
- { 0x01, "MBZ-0x01" },
+ { 0x02, "MBZ-1" },
+ { 0x01, "MBZ-0" },
{ 0, NULL }
};
#define AOEV1_AFLAG_A 0x02
#define AOEV1_AFLAG_W 0x01
-static const struct tok aoev1_aflag_str[] = {
- { 0x08, "MBZ-0x08" },
+static const struct tok aoev1_aflag_bitmap_str[] = {
+ { 0x80, "MBZ-7" },
{ AOEV1_AFLAG_E, "Ext48" },
- { 0x06, "MBZ-0x06" },
+ { 0x20, "MBZ-5" },
{ AOEV1_AFLAG_D, "Device" },
- { 0x04, "MBZ-0x04" },
- { 0x03, "MBZ-0x03" },
+ { 0x08, "MBZ-3" },
+ { 0x04, "MBZ-2" },
{ AOEV1_AFLAG_A, "Async" },
{ AOEV1_AFLAG_W, "Write" },
{ 0, NULL }
static void
aoev1_issue_print(netdissect_options *ndo,
- const u_char *cp, const u_int len)
+ const u_char *cp, u_int len)
{
- const u_char *ep = cp + len;
-
if (len < AOEV1_ISSUE_ARG_LEN)
goto invalid;
/* AFlags */
- ND_TCHECK_1(cp);
- ND_PRINT("\n\tAFlags: [%s]", bittok2str(aoev1_aflag_str, "none", EXTRACT_U_1(cp)));
+ ND_PRINT("\n\tAFlags: [%s]",
+ bittok2str(aoev1_aflag_bitmap_str, "none", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* Err/Feature */
- ND_TCHECK_1(cp);
- ND_PRINT(", Err/Feature: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", Err/Feature: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* Sector Count (not correlated with the length) */
- ND_TCHECK_1(cp);
- ND_PRINT(", Sector Count: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", Sector Count: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* Cmd/Status */
- ND_TCHECK_1(cp);
- ND_PRINT(", Cmd/Status: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", Cmd/Status: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba0 */
- ND_TCHECK_1(cp);
- ND_PRINT("\n\tlba0: %u", EXTRACT_U_1(cp));
+ ND_PRINT("\n\tlba0: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba1 */
- ND_TCHECK_1(cp);
- ND_PRINT(", lba1: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", lba1: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba2 */
- ND_TCHECK_1(cp);
- ND_PRINT(", lba2: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", lba2: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba3 */
- ND_TCHECK_1(cp);
- ND_PRINT(", lba3: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", lba3: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba4 */
- ND_TCHECK_1(cp);
- ND_PRINT(", lba4: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", lba4: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* lba5 */
- ND_TCHECK_1(cp);
- ND_PRINT(", lba5: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", lba5: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* Reserved */
ND_TCHECK_2(cp);
cp += 2;
+ len -= 2;
/* Data */
- if (len > AOEV1_ISSUE_ARG_LEN)
- ND_PRINT("\n\tData: %u bytes", len - AOEV1_ISSUE_ARG_LEN);
+ if (len)
+ ND_PRINT("\n\tData: %u bytes", len);
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
static void
aoev1_query_print(netdissect_options *ndo,
- const u_char *cp, const u_int len)
+ const u_char *cp, u_int len)
{
- const u_char *ep = cp + len;
uint16_t cslen;
if (len < AOEV1_QUERY_ARG_LEN)
goto invalid;
/* Buffer Count */
- ND_TCHECK_2(cp);
- ND_PRINT("\n\tBuffer Count: %u", EXTRACT_BE_U_2(cp));
+ ND_PRINT("\n\tBuffer Count: %u", GET_BE_U_2(cp));
cp += 2;
+ len -= 2;
/* Firmware Version */
- ND_TCHECK_2(cp);
- ND_PRINT(", Firmware Version: %u", EXTRACT_BE_U_2(cp));
+ ND_PRINT(", Firmware Version: %u", GET_BE_U_2(cp));
cp += 2;
+ len -= 2;
/* Sector Count */
- ND_TCHECK_1(cp);
- ND_PRINT(", Sector Count: %u", EXTRACT_U_1(cp));
+ ND_PRINT(", Sector Count: %u", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* AoE/CCmd */
- ND_TCHECK_1(cp);
- ND_PRINT(", AoE: %u, CCmd: %s", (EXTRACT_U_1(cp) & 0xF0) >> 4,
- tok2str(aoev1_ccmd_str, "Unknown (0x02x)", EXTRACT_U_1(cp) & 0x0F));
+ ND_PRINT(", AoE: %u, CCmd: %s", (GET_U_1(cp) & 0xF0) >> 4,
+ tok2str(aoev1_ccmd_str, "Unknown (0x02x)", GET_U_1(cp) & 0x0F));
cp += 1;
+ len -= 1;
/* Config String Length */
- ND_TCHECK_2(cp);
- cslen = EXTRACT_BE_U_2(cp);
+ cslen = GET_BE_U_2(cp);
cp += 2;
- if (cslen > AOEV1_MAX_CONFSTR_LEN || AOEV1_QUERY_ARG_LEN + cslen > len)
+ len -= 2;
+ if (cslen > AOEV1_MAX_CONFSTR_LEN || cslen > len)
goto invalid;
/* Config String */
- ND_TCHECK_LEN(cp, cslen);
if (cslen) {
ND_PRINT("\n\tConfig String (length %u): ", cslen);
- if (fn_printn(ndo, cp, cslen, ndo->ndo_snapend))
- goto trunc;
+ nd_printjn(ndo, cp, cslen);
}
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
static void
aoev1_mac_print(netdissect_options *ndo,
- const u_char *cp, const u_int len)
+ const u_char *cp, u_int len)
{
- const u_char *ep = cp + len;
uint8_t dircount, i;
if (len < AOEV1_MAC_ARG_LEN)
goto invalid;
/* Reserved */
- ND_TCHECK_1(cp);
cp += 1;
+ len -= 1;
/* MCmd */
- ND_TCHECK_1(cp);
- ND_PRINT("\n\tMCmd: %s", tok2str(aoev1_mcmd_str, "Unknown (0x%02x)", EXTRACT_U_1(cp)));
+ ND_PRINT("\n\tMCmd: %s",
+ tok2str(aoev1_mcmd_str, "Unknown (0x%02x)", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* MError */
- ND_TCHECK_1(cp);
- ND_PRINT(", MError: %s", tok2str(aoev1_merror_str, "Unknown (0x%02x)", EXTRACT_U_1(cp)));
+ ND_PRINT(", MError: %s",
+ tok2str(aoev1_merror_str, "Unknown (0x%02x)", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* Dir Count */
- ND_TCHECK_1(cp);
- dircount = EXTRACT_U_1(cp);
+ dircount = GET_U_1(cp);
cp += 1;
+ len -= 1;
ND_PRINT(", Dir Count: %u", dircount);
- if (AOEV1_MAC_ARG_LEN + dircount * 8 > len)
+ if (dircount * 8U > len)
goto invalid;
/* directives */
for (i = 0; i < dircount; i++) {
/* Reserved */
- ND_TCHECK_1(cp);
cp += 1;
+ len -= 1;
/* DCmd */
- ND_TCHECK_1(cp);
- ND_PRINT("\n\t DCmd: %s", tok2str(aoev1_dcmd_str, "Unknown (0x%02x)", EXTRACT_U_1(cp)));
+ ND_PRINT("\n\t DCmd: %s",
+ tok2str(aoev1_dcmd_str, "Unknown (0x%02x)", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* Ethernet Address */
- ND_TCHECK_LEN(cp, MAC_ADDR_LEN);
- ND_PRINT(", Ethernet Address: %s", etheraddr_string(ndo, cp));
- cp += MAC_ADDR_LEN;
+ ND_PRINT(", Ethernet Address: %s", GET_MAC48_STRING(cp));
+ cp += MAC48_LEN;
+ len -= MAC48_LEN;
}
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
static void
aoev1_reserve_print(netdissect_options *ndo,
- const u_char *cp, const u_int len)
+ const u_char *cp, u_int len)
{
- const u_char *ep = cp + len;
uint8_t nmacs, i;
- if (len < AOEV1_RESERVE_ARG_LEN || (len - AOEV1_RESERVE_ARG_LEN) % MAC_ADDR_LEN)
+ if (len < AOEV1_RESERVE_ARG_LEN || (len - AOEV1_RESERVE_ARG_LEN) % MAC48_LEN)
goto invalid;
/* RCmd */
- ND_TCHECK_1(cp);
- ND_PRINT("\n\tRCmd: %s", tok2str(aoev1_rcmd_str, "Unknown (0x%02x)", EXTRACT_U_1(cp)));
+ ND_PRINT("\n\tRCmd: %s",
+ tok2str(aoev1_rcmd_str, "Unknown (0x%02x)", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* NMacs (correlated with the length) */
- ND_TCHECK_1(cp);
- nmacs = EXTRACT_U_1(cp);
+ nmacs = GET_U_1(cp);
cp += 1;
+ len -= 1;
ND_PRINT(", NMacs: %u", nmacs);
- if (AOEV1_RESERVE_ARG_LEN + nmacs * MAC_ADDR_LEN != len)
+ if (nmacs * MAC48_LEN != len)
goto invalid;
/* addresses */
for (i = 0; i < nmacs; i++) {
- ND_PRINT("\n\tEthernet Address %u: %s", i, etheraddr_string(ndo, cp));
- cp += MAC_ADDR_LEN;
+ ND_PRINT("\n\tEthernet Address %u: %s", i, GET_MAC48_STRING(cp));
+ cp += MAC48_LEN;
+ len -= MAC48_LEN;
}
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
/* 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 *cp, u_int len)
{
- const u_char *ep = cp + len;
uint8_t flags, command;
- void (*cmd_decoder)(netdissect_options *, const u_char *, const u_int);
+ void (*cmd_decoder)(netdissect_options *, const u_char *, u_int);
if (len < AOEV1_COMMON_HDR_LEN)
goto invalid;
/* Flags */
- flags = EXTRACT_U_1(cp) & 0x0F;
+ flags = GET_U_1(cp) & 0x0F;
ND_PRINT(", Flags: [%s]", bittok2str(aoev1_flag_str, "none", flags));
cp += 1;
+ len -= 1;
if (! ndo->ndo_vflag)
return;
/* Error */
- ND_TCHECK_1(cp);
if (flags & AOEV1_FLAG_E)
- ND_PRINT("\n\tError: %s", tok2str(aoev1_errcode_str, "Invalid (%u)", EXTRACT_U_1(cp)));
+ ND_PRINT("\n\tError: %s",
+ tok2str(aoev1_errcode_str, "Invalid (%u)", GET_U_1(cp)));
cp += 1;
+ len -= 1;
/* Major */
- ND_TCHECK_2(cp);
- ND_PRINT("\n\tMajor: 0x%04x", EXTRACT_BE_U_2(cp));
+ ND_PRINT("\n\tMajor: 0x%04x", GET_BE_U_2(cp));
cp += 2;
+ len -= 2;
/* Minor */
- ND_TCHECK_1(cp);
- ND_PRINT(", Minor: 0x%02x", EXTRACT_U_1(cp));
+ ND_PRINT(", Minor: 0x%02x", GET_U_1(cp));
cp += 1;
+ len -= 1;
/* Command */
- ND_TCHECK_1(cp);
- command = EXTRACT_U_1(cp);
+ command = GET_U_1(cp);
cp += 1;
+ len -= 1;
ND_PRINT(", Command: %s", tok2str(cmdcode_str, "Unknown (0x%02x)", command));
/* Tag */
- ND_TCHECK_4(cp);
- ND_PRINT(", Tag: 0x%08x", EXTRACT_BE_U_4(cp));
+ ND_PRINT(", Tag: 0x%08x", GET_BE_U_4(cp));
cp += 4;
+ len -= 4;
/* Arg */
cmd_decoder =
command == AOEV1_CMD_ISSUE_ATA_COMMAND ? aoev1_issue_print :
command == AOEV1_CMD_RESERVE_RELEASE ? aoev1_reserve_print :
NULL;
if (cmd_decoder != NULL)
- cmd_decoder(ndo, cp, len - AOEV1_COMMON_HDR_LEN);
+ cmd_decoder(ndo, cp, len);
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
void
aoe_print(netdissect_options *ndo,
const u_char *cp, const u_int len)
{
- const u_char *ep = cp + len;
uint8_t ver;
+ ndo->ndo_protocol = "aoe";
ND_PRINT("AoE length %u", len);
if (len < 1)
goto invalid;
/* Ver/Flags */
- ND_TCHECK_1(cp);
- ver = (EXTRACT_U_1(cp) & 0xF0) >> 4;
+ ver = (GET_U_1(cp) & 0xF0) >> 4;
/* Don't advance cp yet: low order 4 bits are version-specific. */
ND_PRINT(", Ver %u", ver);
return;
invalid:
- ND_PRINT("%s", istr);
- ND_TCHECK_LEN(cp, ep - cp);
- return;
-trunc:
- ND_PRINT("%s", tstr);
+ nd_print_invalid(ndo);
+ ND_TCHECK_LEN(cp, len);
}
projects / tcpdump / blobdiff