*/
+/* \summary: Token Ring printer */
+
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
-#include "ether.h"
/*
* Copyright (c) 1998, Larry Lile
*/
#define TOKEN_HDRLEN 14
-#define TOKEN_RING_MAC_LEN 6
#define ROUTING_SEGMENT_MAX 16
#define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80)
-#define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6)
+#define FRAME_TYPE(trp) ((GET_U_1((trp)->token_fc) & 0xC0) >> 6)
#define TOKEN_FC_LLC 1
-#define BROADCAST(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0xE000) >> 13)
-#define RIF_LENGTH(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x1f00) >> 8)
-#define DIRECTION(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0080) >> 7)
-#define LARGEST_FRAME(trp) ((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0070) >> 4)
-#define RING_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0xfff0) >> 4)
-#define BRIDGE_NUMBER(trp, x) ((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0x000f))
+#define BROADCAST(trp) ((GET_BE_U_2((trp)->token_rcf) & 0xE000) >> 13)
+#define RIF_LENGTH(trp) ((GET_BE_U_2((trp)->token_rcf) & 0x1f00) >> 8)
+#define DIRECTION(trp) ((GET_BE_U_2((trp)->token_rcf) & 0x0080) >> 7)
+#define LARGEST_FRAME(trp) ((GET_BE_U_2((trp)->token_rcf) & 0x0070) >> 4)
+#define RING_NUMBER(trp, x) ((GET_BE_U_2((trp)->token_rseg[x]) & 0xfff0) >> 4)
+#define BRIDGE_NUMBER(trp, x) (GET_BE_U_2((trp)->token_rseg[x]) & 0x000f)
#define SEGMENT_COUNT(trp) ((int)((RIF_LENGTH(trp) - 2) / 2))
struct token_header {
- uint8_t token_ac;
- uint8_t token_fc;
- uint8_t token_dhost[TOKEN_RING_MAC_LEN];
- uint8_t token_shost[TOKEN_RING_MAC_LEN];
- uint16_t token_rcf;
- uint16_t token_rseg[ROUTING_SEGMENT_MAX];
+ nd_uint8_t token_ac;
+ nd_uint8_t token_fc;
+ nd_mac_addr token_dhost;
+ nd_mac_addr token_shost;
+ nd_uint16_t token_rcf;
+ nd_uint16_t token_rseg[ROUTING_SEGMENT_MAX];
};
-static const char tstr[] = "[|token-ring]";
/* Extract src, dst addresses */
-static inline void
+static void
extract_token_addrs(const struct token_header *trp, char *fsrc, char *fdst)
{
memcpy(fdst, (const char *)trp->token_dhost, 6);
/*
* Print the TR MAC header
*/
-static inline void
+static void
token_hdr_print(netdissect_options *ndo,
- register const struct token_header *trp, register u_int length,
- register const u_char *fsrc, register const u_char *fdst)
+ const struct token_header *trp, u_int length,
+ const u_char *fsrc, const u_char *fdst)
{
const char *srcname, *dstname;
srcname = etheraddr_string(ndo, fsrc);
dstname = etheraddr_string(ndo, fdst);
- if (ndo->ndo_vflag)
- ND_PRINT((ndo, "%02x %02x %s %s %d: ",
- trp->token_ac,
- trp->token_fc,
- srcname, dstname,
- length));
- else
- ND_PRINT((ndo, "%s %s %d: ", srcname, dstname, length));
+ if (!ndo->ndo_qflag)
+ ND_PRINT("%02x %02x ",
+ GET_U_1(trp->token_ac),
+ GET_U_1(trp->token_fc));
+ ND_PRINT("%s > %s, length %u: ",
+ srcname, dstname,
+ length);
}
static const char *broadcast_indicator[] = {
{
const struct token_header *trp;
int llc_hdrlen;
- struct ether_header ehdr;
+ nd_mac_addr srcmac, dstmac;
+ struct lladdr_info src, dst;
u_int route_len = 0, hdr_len = TOKEN_HDRLEN;
int seg;
+ ndo->ndo_protocol = "token-ring";
trp = (const struct token_header *)p;
if (caplen < TOKEN_HDRLEN) {
- ND_PRINT((ndo, "%s", tstr));
+ nd_print_trunc(ndo);
return hdr_len;
}
/*
* Get the TR addresses into a canonical form
*/
- extract_token_addrs(trp, (char*)ESRC(&ehdr), (char*)EDST(&ehdr));
+ extract_token_addrs(trp, (char*)srcmac, (char*)dstmac);
/* Adjust for source routing information in the MAC header */
if (IS_SOURCE_ROUTED(trp)) {
/* Clear source-routed bit */
- *ESRC(&ehdr) &= 0x7f;
+ srcmac[0] &= 0x7f;
if (ndo->ndo_eflag)
- token_hdr_print(ndo, trp, length, ESRC(&ehdr), EDST(&ehdr));
+ token_hdr_print(ndo, trp, length, srcmac, dstmac);
if (caplen < TOKEN_HDRLEN + 2) {
- ND_PRINT((ndo, "%s", tstr));
+ nd_print_trunc(ndo);
return hdr_len;
}
route_len = RIF_LENGTH(trp);
hdr_len += route_len;
if (caplen < hdr_len) {
- ND_PRINT((ndo, "%s", tstr));
+ nd_print_trunc(ndo);
return hdr_len;
}
if (ndo->ndo_vflag) {
- ND_PRINT((ndo, "%s ", broadcast_indicator[BROADCAST(trp)]));
- ND_PRINT((ndo, "%s", direction[DIRECTION(trp)]));
+ ND_PRINT("%s ", broadcast_indicator[BROADCAST(trp)]);
+ ND_PRINT("%s", direction[DIRECTION(trp)]);
for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
- ND_PRINT((ndo, " [%d:%d]", RING_NUMBER(trp, seg),
- BRIDGE_NUMBER(trp, seg)));
+ ND_PRINT(" [%u:%u]", RING_NUMBER(trp, seg),
+ BRIDGE_NUMBER(trp, seg));
} else {
- ND_PRINT((ndo, "rt = %x", EXTRACT_16BITS(&trp->token_rcf)));
+ ND_PRINT("rt = %x", GET_BE_U_2(trp->token_rcf));
for (seg = 0; seg < SEGMENT_COUNT(trp); seg++)
- ND_PRINT((ndo, ":%x", EXTRACT_16BITS(&trp->token_rseg[seg])));
+ ND_PRINT(":%x",
+ GET_BE_U_2(trp->token_rseg[seg]));
}
- ND_PRINT((ndo, " (%s) ", largest_frame[LARGEST_FRAME(trp)]));
+ ND_PRINT(" (%s) ", largest_frame[LARGEST_FRAME(trp)]);
} else {
if (ndo->ndo_eflag)
- token_hdr_print(ndo, trp, length, ESRC(&ehdr), EDST(&ehdr));
+ token_hdr_print(ndo, trp, length, srcmac, dstmac);
}
+ src.addr = srcmac;
+ src.addr_string = etheraddr_string;
+ dst.addr = dstmac;
+ dst.addr_string = etheraddr_string;
+
/* Skip over token ring MAC header and routing information */
length -= hdr_len;
p += hdr_len;
/* Frame Control field determines interpretation of packet */
if (FRAME_TYPE(trp) == TOKEN_FC_LLC) {
/* Try to print the LLC-layer header & higher layers */
- llc_hdrlen = llc_print(ndo, p, length, caplen, ESRC(&ehdr),
- EDST(&ehdr));
+ llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
if (llc_hdrlen < 0) {
/* packet type not known, print raw packet */
if (!ndo->ndo_suppress_default_print)
/* XXX - dissect MAC packets if frame type is 0 */
if (!ndo->ndo_eflag)
token_hdr_print(ndo, trp, length + TOKEN_HDRLEN + route_len,
- ESRC(&ehdr), EDST(&ehdr));
+ srcmac, dstmac);
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
}
* 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
-u_int
+void
token_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
{
- return (token_print(ndo, p, h->len, h->caplen));
+ ndo->ndo_protocol = "token-ring";
+ ndo->ndo_ll_hdr_len += token_print(ndo, p, h->len, h->caplen);
}
projects / tcpdump / blobdiff