added dbug's fec and network routines

2013-12-20 15:01:54 +00:00
parent 481697e0d9
commit 78d1969b75
23 changed files with 3219 additions and 438 deletions
--- a/include/icmp.h
+++ b/include/icmp.h
@@ -0,0 +1,121 @@
+/*
+ * File:        icmp.h
+ * Purpose:     Handle Internet Control Message Protocol packets.
+ *
+ * Notes:       See RFC 792 "Internet Control Message Protocol"
+ *              for more details.
+ */
+
+#ifndef _ICMP_H
+#define _ICMP_H
+
+/********************************************************************/
+
+typedef struct
+{
+    uint32_t  unused;
+    uint8_t   ih_dg;
+} icmp_dest_unreachable;
+#define ICMP_DEST_UNREACHABLE       (3) /* type */
+#define ICMP_NET_UNREACHABLE        (0) /* code */
+#define ICMP_HOST_UNREACHABLE       (1)
+#define ICMP_PROTOCOL_UNREACHABLE   (2)
+#define ICMP_PORT_UNREACHABLE       (3)
+#define ICMP_FRAG_NEEDED            (4)
+#define ICMP_ROUTE_FAILED           (5)
+
+typedef struct
+{
+    uint32_t  unused;
+    uint8_t   ih_dg;
+} icmp_time_exceeded;
+#define ICMP_TIME_EXCEEDED          (11)    /* type */
+#define ICMP_TTL_EXCEEDED           (0)     /* code */
+#define ICMP_FRAG_TIME_EXCEEDED     (1)
+
+typedef struct
+{
+    uint8_t   pointer;
+    uint8_t   unused1;
+    uint16_t  unused2;
+    uint8_t   ih_dg;
+} icmp_parameter_problem;
+#define ICMP_PARAMETER_PROBLEM      (12)    /* type */
+#define ICMP_POINTER                (0)     /* code -- not */
+
+typedef struct
+{
+    uint32_t  unused;
+    uint8_t   ih_dg;
+} icmp_source_quench;
+#define ICMP_SOURCE_QUENCH          (4)     /* type */
+
+typedef struct
+{
+    uint32_t  gateway_addr;
+    uint8_t   ih_dg;
+} icmp_redirect;
+#define ICMP_REDIRECT               (5)     /* type */
+#define ICMP_REDIRECT_NET           (0)     /* code */
+#define ICMP_REDIRECT_HOST          (1)
+#define ICMP_REDIRECT_TOS_NET       (2)
+#define ICMP_REDIRECT_TOS_HOST      (3)
+
+typedef struct
+{
+    uint16_t  identifier;
+    uint16_t  sequence;
+    uint8_t   data;
+} icmp_echo;
+#define ICMP_ECHO                   (8)     /* type */
+#define ICMP_ECHO_REPLY             (0)     /* type */
+
+typedef struct
+{
+    uint16_t  identifier;
+    uint16_t  sequence;
+} icmp_information;
+#define ICMP_INFORMATION_REQUEST    (15)    /* type */
+#define ICMP_INFORMATION_REPLY      (16)    /* type */
+
+typedef struct
+{
+    uint16_t  identifier;
+    uint16_t  sequence;
+    uint32_t  originate_ts;
+    uint32_t  receive_ts;
+    uint32_t  transmit_ts;
+} icmp_timestamp;
+#define ICMP_TIMESTAMP              (13)    /* type */
+#define ICMP_TIMESTAMP_REPLY        (14)    /* type */
+
+typedef struct
+{
+    uint8_t   type;
+    uint8_t   code;
+    uint16_t  chksum;
+    union
+    {
+        icmp_dest_unreachable       dest_unreachable;
+        icmp_source_quench          source_quench;
+        icmp_redirect               redirect;
+        icmp_time_exceeded          time_exceeded;
+        icmp_parameter_problem      parameter_problem;
+        icmp_timestamp              timestamp;
+        icmp_information            information;
+        icmp_echo                   echo;
+    } msg;
+} icmp_message;
+
+/********************************************************************/
+
+/* Protocol Header information */
+#define ICMP_HDR_OFFSET     (ETH_HDR_LEN + IP_HDR_SIZE)
+#define ICMP_HDR_SIZE       8
+
+void
+icmp_handler(NIF *, NBUF *);
+
+/********************************************************************/
+
+#endif  /* _ICMP_H */