More UNALIGNED_MEM{CPY,CMP} on IP addresses.

[tcpdump] / llc.h

diff --git a/llc.h b/llc.h
index 5abecbd9d065c44d542fa33b003b67faa01509a7..ec8d069e77b9d6af224ff92db4ca0da4c673121d 100644 (file)
--- a/llc.h
+++ b/llc.h
@@ -17,47 +17,15 @@
  * 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.
- *
- * @(#) $Header: /tcpdump/master/tcpdump/llc.h,v 1.11 2001-05-09 01:08:47 fenner Exp $ (LBL)
- */
-
-/*
- * This stuff should come from a system header file, but there's no
- * obviously portable way to do that and it's not really going
- * to change from system to system.
  */
 
 /*
- * A somewhat abstracted view of the LLC header
+ * Definitions for information in the LLC header.
  */
 
-struct llc {
-       u_int8_t dsap;
-       u_int8_t ssap;
-       union {
-               u_int8_t u_ctl;
-               u_int16_t is_ctl;
-               struct {
-                       u_int8_t snap_ui;
-                       u_int8_t snap_pi[5];
-               } snap;
-               struct {
-                       u_int8_t snap_ui;
-                       u_int8_t snap_orgcode[3];
-                       u_int8_t snap_ethertype[2];
-               } snap_ether;
-       } ctl;
-};
-
-#define        llcui           ctl.snap.snap_ui
-#define        llcpi           ctl.snap.snap_pi
-#define        orgcode         ctl.snap_ether.snap_orgcode
-#define        ethertype       ctl.snap_ether.snap_ethertype
-#define        llcis           ctl.is_ctl
-#define        llcu            ctl.u_ctl
-
 #define        LLC_U_FMT       3
 #define        LLC_GSAP        1
+#define        LLC_IG          1 /* Individual / Group */
 #define LLC_S_FMT      1
 
 #define        LLC_U_POLL      0x10
@@ -74,7 +42,7 @@ struct llc {
 #define        LLC_XID         0xaf
 #define        LLC_FRMR        0x87
 
-#define        LLC_S_CMD(is)   (((is) >> 1) & 0x03)
+#define        LLC_S_CMD(is)   (((is) >> 2) & 0x03)
 #define        LLC_RR          0x0001
 #define        LLC_RNR         0x0005
 #define        LLC_REJ         0x0009
@@ -94,6 +62,9 @@ struct llc {
 #ifndef LLCSAP_8021B_G
 #define        LLCSAP_8021B_G          0x03
 #endif
+#ifndef LLCSAP_SNA
+#define        LLCSAP_SNA              0x04
+#endif
 #ifndef LLCSAP_IP
 #define        LLCSAP_IP               0x06
 #endif
@@ -124,3 +95,28 @@ struct llc {
 #ifndef LLCSAP_ISONS
 #define        LLCSAP_ISONS            0xfe
 #endif
+
+/*
+ * PIDs for use with OUI_CISCO.
+ */
+#define        PID_CISCO_CDP           0x2000  /* Cisco Discovery Protocol */
+#define        PID_CISCO_VTP           0x2003  /* Cisco VLAN Trunk Protocol */
+#define        PID_CISCO_DTP           0x2004  /* Cisco Dynamic Trunk Protocol */
+#define        PID_CISCO_UDLD          0x0111  /* Unidirectional Link Detection */
+#define        PID_CISCO_PVST          0x010b  /* Per VLAN Spanning Tree+ and RPVST+ */
+#define        PID_CISCO_VLANBRIDGE    0x010c  /* "VLAN Bridge", according to Wireshark */
+
+/*
+ * PIDs for use with OUI_RFC2684.
+ */
+#define PID_RFC2684_ETH_FCS    0x0001  /* Ethernet, with FCS */
+#define PID_RFC2684_ETH_NOFCS  0x0007  /* Ethernet, without FCS */
+#define PID_RFC2684_802_4_FCS  0x0002  /* 802.4, with FCS */
+#define PID_RFC2684_802_4_NOFCS        0x0008  /* 802.4, without FCS */
+#define PID_RFC2684_802_5_FCS  0x0003  /* 802.5, with FCS */
+#define PID_RFC2684_802_5_NOFCS        0x0009  /* 802.5, without FCS */
+#define PID_RFC2684_FDDI_FCS   0x0004  /* FDDI, with FCS */
+#define PID_RFC2684_FDDI_NOFCS 0x000a  /* FDDI, without FCS */
+#define PID_RFC2684_802_6_FCS  0x0005  /* 802.6, with FCS */
+#define PID_RFC2684_802_6_NOFCS        0x000b  /* 802.6, without FCS */
+#define PID_RFC2684_BPDU       0x000e  /* BPDUs */