xnu-201.14.tar.gz

[apple/xnu.git] / bsd / net / ndrv.h

diff --git a/bsd/net/ndrv.h b/bsd/net/ndrv.h
index 38b75b558946605ab2c4fbef0cffcf407033aabe..7140ed56c43506b8a39e3639709db0b2d696c1c7 100644 (file)
--- a/bsd/net/ndrv.h
+++ b/bsd/net/ndrv.h
@@ -24,56 +24,104 @@
  *     @(#)ndrv.h      1.1 (MacOSX) 6/10/43
  * Justin Walker - 970604
  */
  *     @(#)ndrv.h      1.1 (MacOSX) 6/10/43
  * Justin Walker - 970604
  */

+#include <net/dlil.h>

 
 #ifndef _NET_NDRV_H
 #define _NET_NDRV_H
 
 
 #ifndef _NET_NDRV_H
 #define _NET_NDRV_H
 

+

 struct sockaddr_ndrv
 struct sockaddr_ndrv

-{      unsigned char snd_len;
+{
+    unsigned char snd_len;

        unsigned char snd_family;
        unsigned char snd_name[IFNAMSIZ]; /* from if.h */
 };
 
 /*
        unsigned char snd_family;
        unsigned char snd_name[IFNAMSIZ]; /* from if.h */
 };
 
 /*

- * The cb is plugged into the socket (so_pcb), and the ifnet structure
- *  of BIND is plugged in here.
- * For now, it looks like a raw_cb up front...
+ * Support for user-mode protocol handlers

  */
  */

-struct ndrv_cb
-{      struct ndrv_cb *nd_next;        /* Doubly-linked list */
-       struct ndrv_cb *nd_prev;
-       struct socket *nd_socket;       /* Back to the socket */
-       unsigned int nd_signature;      /* Just double-checking */
-       struct sockaddr_ndrv *nd_faddr;
-       struct sockaddr_ndrv *nd_laddr;
-       struct sockproto nd_proto;      /* proto family, protocol */
-       int nd_descrcnt;                /* # elements in nd_dlist */
-       TAILQ_HEAD(dlist, dlil_demux_desc) nd_dlist; /* Descr. list */
-       struct ifnet *nd_if;
-};

 
 

-#define        sotondrvcb(so)          ((struct ndrv_cb *)(so)->so_pcb)
-#define NDRV_SIGNATURE 0x4e445256 /* "NDRV" */
+#define NDRV_DEMUXTYPE_ETHERTYPE       DLIL_DESC_ETYPE2
+#define        NDRV_DEMUXTYPE_SAP                      DLIL_DESC_SAP
+#define NDRV_DEMUXTYPE_SNAP                    DLIL_DESC_SNAP

 
 

-/* Nominal allocated space for NDRV sockets */
-#define NDRVSNDQ        8192
-#define NDRVRCVQ        8192
+#define        NDRVPROTO_NDRV                          0

 
 /*
 
 /*

- * Support for user-mode protocol handlers
+ * Struct: ndrv_demux_desc
+ * Purpose:
+ *   To uniquely identify a packet based on its low-level framing information.
+ *
+ * Fields:
+ *             type            :       type of protocol in data field, must be understood by
+ *                                             the interface family of the interface the socket is bound to
+ *             length          :       length of protocol data in "data" field
+ *             data            :       union of framing-specific data, in network byte order
+ *             ether_type      :       ethernet type in network byte order, assuming
+ *                                             ethernet type II framing
+ *             sap                     :       first 3 bytes of sap header, network byte order
+ *             snap            :       first 5 bytes of snap header, network byte order
+ *             other           :       up to 28 bytes of protocol data for different protocol type
+ *
+ * Examples:
+ * 1) 802.1x uses ether_type 0x888e, so the descriptor would be set as:
+ *    struct ndrv_demux_desc desc;
+ *    desc.type = NDRV_DEMUXTYPE_ETHERTYPE
+ *       desc.length = sizeof(unsigned short);
+ *    desc.ether_type = htons(0x888e);
+ * 2) AppleTalk uses SNAP 0x080007809B
+ *    struct ndrv_demux_desc desc;
+ *    desc.type = NDRV_DEMUXTYPE_SNAP;
+ *    desc.length = 5;
+ *    desc.data.snap[0] = 08;
+ *    desc.data.snap[1] = 00;
+ *    desc.data.snap[2] = 07;
+ *    desc.data.snap[3] = 80;
+ *    desc.data.snap[4] = 9B;

  */
  */

+struct ndrv_demux_desc
+{
+    u_int16_t  type;
+    u_int16_t  length;
+    union
+    {
+        u_int16_t      ether_type;
+        u_int8_t       sap[3];
+        u_int8_t       snap[5];
+        u_int8_t       other[28];
+    } data;
+};
+
+#define NDRV_PROTOCOL_DESC_VERS        1

 
 

-/* Arg to socket options */
-struct ndrv_descr
-{      unsigned int nd_len;    /* Length of descriptor buffer, in bytes */
-       unsigned char *nd_buf;  /* Descriptor buffer */
+/*
+ * Struct: ndrv_protocol_desc
+ * Purpose:
+ *   Used to "bind" an NDRV socket so that packets that match
+ *   given protocol demux descriptions can be received:
+ * Field:
+ *             version                 :       must be NDRV_PROTOCOL_DESC_VERS
+ *             protocol_family :       unique identifier for this protocol
+ *             demux_count             :       number of demux_list descriptors in demux_list
+ *             demux_list              :       pointer to array of demux descriptors
+ */
+struct ndrv_protocol_desc
+{
+    u_int32_t                          version;
+    u_int32_t                          protocol_family;
+    u_int32_t                          demux_count;
+    struct ndrv_demux_desc*    demux_list;

 };
 
 };
 

-#define NDRV_DMXSPEC   0x01    /* Get/Set (Add) a list of protocol specs */
-#define NDRV_DELDMXSPEC 0x02   /* Delete a list of protocol specs */
-#define NDRV_DMXSPECCNT 0x03   /* Return number of active protocol specs */
+#define SOL_NDRVPROTO          NDRVPROTO_NDRV  /* Use this socket level */
+/*             NDRV_DMXSPEC            0x01                       Obsolete */
+#define NDRV_DELDMXSPEC                0x02                    /* Delete the registered protocol */
+/*             NDRV_DMXSPECCNT         0x03                       Obsolete */
+#define NDRV_SETDMXSPEC                0x04                    /* Set the protocol spec */

 
 #if KERNEL
 
 #if KERNEL

-extern struct ndrv_cb ndrvl;           /* Head of controlblock list */
+/* Additional Kernel APIs */
+struct ifnet*  ndrv_get_ifp(caddr_t ndrv_pcb);

 #endif
 #endif

+

 #endif /* _NET_NDRV_H */
 #endif /* _NET_NDRV_H */