* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+/* \summary: Ethernet printer */
+
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "ethertype.h"
-#include "ether.h"
+
+/*
+ * Structure of an Ethernet header.
+ */
+struct ether_header {
+ nd_mac_addr ether_dhost;
+ nd_mac_addr ether_shost;
+ nd_uint16_t ether_length_type;
+};
+
+/*
+ * Length of an Ethernet header; note that some compilers may pad
+ * "struct ether_header" to a multiple of 4 bytes, for example, so
+ * "sizeof (struct ether_header)" may not give the right answer.
+ */
+#define ETHER_HDRLEN 14
const struct tok ethertype_values[] = {
{ ETHERTYPE_IP, "IPv4" },
{ ETHERTYPE_RRCP, "RRCP" },
{ ETHERTYPE_MS_NLB_HB, "MS NLB heartbeat" },
{ ETHERTYPE_JUMBO, "Jumbo" },
+ { ETHERTYPE_NSH, "NSH" },
{ ETHERTYPE_LOOPBACK, "Loopback" },
{ ETHERTYPE_ISO, "OSI" },
{ ETHERTYPE_GRE_ISO, "GRE-OSI" },
ether_hdr_print(netdissect_options *ndo,
const u_char *bp, u_int length)
{
- register const struct ether_header *ep;
- uint16_t ether_type;
+ const struct ether_header *ep;
+ uint16_t length_type;
ep = (const struct ether_header *)bp;
- ND_PRINT((ndo, "%s > %s",
- etheraddr_string(ndo, ESRC(ep)),
- etheraddr_string(ndo, EDST(ep))));
+ ND_PRINT("%s > %s",
+ etheraddr_string(ndo, ep->ether_shost),
+ etheraddr_string(ndo, ep->ether_dhost));
- ether_type = EXTRACT_16BITS(&ep->ether_type);
+ length_type = EXTRACT_BE_U_2(ep->ether_length_type);
if (!ndo->ndo_qflag) {
- if (ether_type <= ETHERMTU)
- ND_PRINT((ndo, ", 802.3"));
- else
- ND_PRINT((ndo, ", ethertype %s (0x%04x)",
- tok2str(ethertype_values,"Unknown", ether_type),
- ether_type));
+ if (length_type <= MAX_ETHERNET_LENGTH_VAL) {
+ ND_PRINT(", 802.3");
+ length = length_type;
+ } else
+ ND_PRINT(", ethertype %s (0x%04x)",
+ tok2str(ethertype_values,"Unknown", length_type),
+ length_type);
} else {
- if (ether_type <= ETHERMTU)
- ND_PRINT((ndo, ", 802.3"));
- else
- ND_PRINT((ndo, ", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", ether_type)));
+ if (length_type <= MAX_ETHERNET_LENGTH_VAL) {
+ ND_PRINT(", 802.3");
+ length = length_type;
+ } else
+ ND_PRINT(", %s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", length_type));
}
- ND_PRINT((ndo, ", length %u: ", length));
+ ND_PRINT(", length %u: ", length);
}
/*
* This might be encapsulated within another frame; we might be passed
* a pointer to a function that can print header information for that
* frame's protocol, and an argument to pass to that function.
+ *
+ * FIXME: caplen can and should be derived from ndo->ndo_snapend and p.
*/
u_int
ether_print(netdissect_options *ndo,
{
const struct ether_header *ep;
u_int orig_length;
- u_short ether_type;
+ u_short length_type;
u_int hdrlen;
int llc_hdrlen;
+ struct lladdr_info src, dst;
if (caplen < ETHER_HDRLEN) {
- ND_PRINT((ndo, "[|ether]"));
+ ND_PRINT("[|ether]");
return (caplen);
}
if (length < ETHER_HDRLEN) {
- ND_PRINT((ndo, "[|ether]"));
+ ND_PRINT("[|ether]");
return (length);
}
p += ETHER_HDRLEN;
hdrlen = ETHER_HDRLEN;
- ether_type = EXTRACT_16BITS(&ep->ether_type);
+ src.addr = ep->ether_shost;
+ src.addr_string = etheraddr_string;
+ dst.addr = ep->ether_dhost;
+ dst.addr_string = etheraddr_string;
+ length_type = EXTRACT_BE_U_2(ep->ether_length_type);
recurse:
/*
* Is it (gag) an 802.3 encapsulation?
*/
- if (ether_type <= ETHERMTU) {
+ if (length_type <= MAX_ETHERNET_LENGTH_VAL) {
/* Try to print the LLC-layer header & higher layers */
- llc_hdrlen = llc_print(ndo, p, length, caplen, ESRC(ep), EDST(ep));
+ 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)
llc_hdrlen = -llc_hdrlen;
}
hdrlen += llc_hdrlen;
- } else if (ether_type == ETHERTYPE_8021Q ||
- ether_type == ETHERTYPE_8021Q9100 ||
- ether_type == ETHERTYPE_8021Q9200 ||
- ether_type == ETHERTYPE_8021QinQ) {
+ } else if (length_type == ETHERTYPE_8021Q ||
+ length_type == ETHERTYPE_8021Q9100 ||
+ length_type == ETHERTYPE_8021Q9200 ||
+ length_type == ETHERTYPE_8021QinQ) {
/*
* Print VLAN information, and then go back and process
* the enclosed type field.
*/
if (caplen < 4) {
- ND_PRINT((ndo, "[|vlan]"));
+ ND_PRINT("[|vlan]");
return (hdrlen + caplen);
}
if (length < 4) {
- ND_PRINT((ndo, "[|vlan]"));
+ ND_PRINT("[|vlan]");
return (hdrlen + length);
}
if (ndo->ndo_eflag) {
- uint16_t tag = EXTRACT_16BITS(p);
+ uint16_t tag = EXTRACT_BE_U_2(p);
- ND_PRINT((ndo, "%s, ", ieee8021q_tci_string(tag)));
+ ND_PRINT("%s, ", ieee8021q_tci_string(tag));
}
- ether_type = EXTRACT_16BITS(p + 2);
- if (ndo->ndo_eflag && ether_type > ETHERMTU)
- ND_PRINT((ndo, "ethertype %s, ", tok2str(ethertype_values,"0x%04x", ether_type)));
+ length_type = EXTRACT_BE_U_2(p + 2);
+ if (ndo->ndo_eflag && length_type > MAX_ETHERNET_LENGTH_VAL)
+ ND_PRINT("ethertype %s, ", tok2str(ethertype_values,"0x%04x", length_type));
p += 4;
length -= 4;
caplen -= 4;
hdrlen += 4;
goto recurse;
- } else if (ether_type == ETHERTYPE_JUMBO) {
+ } else if (length_type == ETHERTYPE_JUMBO) {
/*
* Alteon jumbo frames.
* See
* there's an LLC header and payload.
*/
/* Try to print the LLC-layer header & higher layers */
- llc_hdrlen = llc_print(ndo, p, length, caplen, ESRC(ep), EDST(ep));
+ 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)
}
hdrlen += llc_hdrlen;
} else {
- if (ethertype_print(ndo, ether_type, p, length, caplen) == 0) {
- /* ether_type not known, print raw packet */
+ if (ethertype_print(ndo, length_type, p, length, caplen, &src, &dst) == 0) {
+ /* type not known, print raw packet */
if (!ndo->ndo_eflag) {
if (print_encap_header != NULL)
(*print_encap_header)(ndo, encap_header_arg);
* Fail if we don't have enough data for the Hilscher pseudo-header.
*/
if (h->len < 4 || h->caplen < 4) {
- ND_PRINT((ndo, "[|netanalyzer]"));
+ ND_PRINT("[|netanalyzer]");
return (h->caplen);
}
* preamble, and SOF.
*/
if (h->len < 12 || h->caplen < 12) {
- ND_PRINT((ndo, "[|netanalyzer-transparent]"));
+ ND_PRINT("[|netanalyzer-transparent]");
return (h->caplen);
}
int
ethertype_print(netdissect_options *ndo,
u_short ether_type, const u_char *p,
- u_int length, u_int caplen)
+ u_int length, u_int caplen,
+ const struct lladdr_info *src, const struct lladdr_info *dst)
{
switch (ether_type) {
case ETHERTYPE_ATALK:
if (ndo->ndo_vflag)
- ND_PRINT((ndo, "et1 "));
+ ND_PRINT("et1 ");
atalk_print(ndo, p, length);
return (1);
return (1);
case ETHERTYPE_IPX:
- ND_PRINT((ndo, "(NOV-ETHII) "));
+ ND_PRINT("(NOV-ETHII) ");
ipx_print(ndo, p, length);
return (1);
case ETHERTYPE_ISO:
- isoclns_print(ndo, p + 1, length - 1, length - 1);
+ if (length == 0 || caplen == 0) {
+ ND_PRINT(" [|osi]");
+ return (1);
+ }
+ isoclns_print(ndo, p + 1, length - 1);
return(1);
case ETHERTYPE_PPPOED:
return (1);
case ETHERTYPE_RRCP:
- rrcp_print(ndo, p - 14 , length + 14);
+ rrcp_print(ndo, p, length, src, dst);
return (1);
case ETHERTYPE_PPP:
if (length) {
- ND_PRINT((ndo, ": "));
+ ND_PRINT(": ");
ppp_print(ndo, p, length);
}
return (1);
lldp_print(ndo, p, length);
return (1);
+ case ETHERTYPE_NSH:
+ nsh_print(ndo, p, length);
+ return (1);
+
case ETHERTYPE_LOOPBACK:
loopback_print(ndo, p, length);
return (1);
case ETHERTYPE_GEONET_OLD:
case ETHERTYPE_GEONET:
- geonet_print(ndo, p-14, p, length);
+ geonet_print(ndo, p, length, src);
return (1);
case ETHERTYPE_CALM_FAST:
- calm_fast_print(ndo, p-14, p, length);
+ calm_fast_print(ndo, p, length, src);
return (1);
case ETHERTYPE_AOE:
return (1);
case ETHERTYPE_MEDSA:
- medsa_print(ndo, p, length, caplen);
+ medsa_print(ndo, p, length, caplen, src, dst);
return (1);
case ETHERTYPE_LAT:
projects / tcpdump / blobdiff