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246 lines
7.5 KiB
246 lines
7.5 KiB
/********************************************************************/
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/** Microsoft LAN Manager **/
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/** Copyright(c) Microsoft Corp., 1990-1992 **/
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/********************************************************************/
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/* :ts=4 */
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//** IP.H - IP public definitions.
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//
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// This file contains all of the definitions that are exported
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// out of the IP module to other VxDs. Some other information (such
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// as error codes and the IPOptInfo structure) is define in ipexport.h
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#ifndef IP_H_INCLUDED
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#define IP_H_INCLUDED 1
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#ifndef IP_EXPORT_INCLUDED
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#include "ipexport.h"
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#endif
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#ifdef NT
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#ifdef _PNP_POWER
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#define TCP_NAME L"TCPIP"
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#else
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#define TCP_NAME L"MSTCP"
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#endif
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#else // NT
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#define TCP_NAME "MSTCP"
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#endif // NT
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#define IP_NET_STATUS 0
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#define IP_HW_STATUS 1
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#define MASK_NET 0
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#define MASK_SUBNET 1
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#define IP_DRIVER_VERSION 1
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#define PROTOCOL_ANY 0
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//* IP Header format.
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struct IPHeader {
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uchar iph_verlen; // Version and length.
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uchar iph_tos; // Type of service.
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ushort iph_length; // Total length of datagram.
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ushort iph_id; // Identification.
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ushort iph_offset; // Flags and fragment offset.
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uchar iph_ttl; // Time to live.
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uchar iph_protocol; // Protocol.
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ushort iph_xsum; // Header checksum.
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IPAddr iph_src; // Source address.
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IPAddr iph_dest; // Destination address.
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}; /* IPHeader */
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typedef struct IPHeader IPHeader;
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/*NOINC*/
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#define NULL_IP_ADDR 0
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#define IP_ADDR_EQUAL(x,y) ((x) == (y))
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#define IP_LOOPBACK_ADDR(x) (((x) & 0xff) == 0x7f)
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#define CLASSD_ADDR(a) (( (*((uchar *)&(a))) & 0xf0) == 0xe0)
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typedef void *IPContext; // An IP context value.
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//* Structure of a route cache entry. A route cache entry functions as a pointer
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// to some routing info. There is one per remote destination, and the memory
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// is owned by the IP layer.
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//
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#define RCE_CONTEXT_SIZE (sizeof(void *)*2) // Right now we use two contexts.
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struct RouteCacheEntry {
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struct RouteCacheEntry *rce_next; // Next RCE in list.
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struct RouteTableEntry *rce_rte; // Back pointer to owning RTE.
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IPAddr rce_dest; // Destination address being cached.
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IPAddr rce_src; // Source address for this RCE.
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uchar rce_flags; // Valid flags.
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uchar rce_dtype; // Type of destination address.
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ushort rce_cnt; // Ref count for this RCE.
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uint rce_usecnt; // Count of people using it.
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DEFINE_LOCK_STRUCTURE(rce_lock) // Lock for this RCE
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uchar rce_context[RCE_CONTEXT_SIZE]; // Space for lower layer context
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}; /* RouteCacheEntry */
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typedef struct RouteCacheEntry RouteCacheEntry;
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#define RCE_VALID 0x1
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#define RCE_CONNECTED 0x2
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#define RCE_REFERENCED 0x4
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#ifdef _PNP_POWER
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#define RCE_ALL_VALID (RCE_VALID | RCE_CONNECTED | RCE_REFERENCED)
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#else // _PNP_POWER
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#define RCE_ALL_VALID (RCE_VALID | RCE_CONNECTED)
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#endif // _PNP_POWER
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/*INC*/
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//* Structure of option info.
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struct IPOptInfo {
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uchar *ioi_options; // Pointer to options (NULL if none).
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IPAddr ioi_addr; // First hop address, if this is source routed.
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uchar ioi_optlength; // Length (in bytes) of options.
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uchar ioi_ttl; // Time to live of this packet.
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uchar ioi_tos; // Type of service for packet.
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uchar ioi_flags; // Flags for this packet.
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}; /* IPOptInfo */
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typedef struct IPOptInfo IPOptInfo;
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#define IP_FLAG_SSRR 0x80 // There options have a SSRR in them.
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/*NOINC*/
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//* Structure of a packet context.
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struct PacketContext {
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struct PCCommon {
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PNDIS_PACKET pc_link; // Link on chain of packets.
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uchar pc_owner; // Owner of packet.
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uchar pc_flags; // Flags concerning this packet.
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ushort pc_pad; // Pad to 32 bit boundary.
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} pc_common;
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struct BufferReference *pc_br; // Pointer to buffer reference structure.
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struct ProtInfo *pc_pi; // Protocol info structure for this packet.
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void *pc_context; // Protocol context to be passed back on send cmplt.
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#ifdef _PNP_POWER
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struct Interface *pc_if; // Interface this packet was sent on.
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#endif
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}; /* PacketContext */
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typedef struct PacketContext PacketContext;
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//* The structure of configuration information passed to an upper layer.
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//
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struct IPInfo {
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uint ipi_version; // Version of the IP driver.
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uint ipi_hsize; // Size of the header.
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IP_STATUS (*ipi_xmit)(void *, void *, PNDIS_BUFFER, uint, IPAddr, IPAddr,
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IPOptInfo *, RouteCacheEntry *, uchar);
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void *(*ipi_protreg)(uchar, void *, void *, void *, void *);
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IPAddr (*ipi_openrce)(IPAddr, IPAddr, RouteCacheEntry **, uchar *,
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ushort *, IPOptInfo *);
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void (*ipi_closerce)(RouteCacheEntry *);
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uchar (*ipi_getaddrtype)(IPAddr);
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uchar (*ipi_getlocalmtu)(IPAddr, ushort *);
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IP_STATUS (*ipi_getpinfo)(IPAddr, IPAddr, uint *, uint *);
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void (*ipi_checkroute)(IPAddr, IPAddr);
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void (*ipi_initopts)(struct IPOptInfo *);
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IP_STATUS (*ipi_updateopts)(struct IPOptInfo *, struct IPOptInfo *, IPAddr, IPAddr);
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IP_STATUS (*ipi_copyopts)(uchar *, uint, struct IPOptInfo *);
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IP_STATUS (*ipi_freeopts)(struct IPOptInfo *);
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long (*ipi_qinfo)(struct TDIObjectID *ID, PNDIS_BUFFER Buffer,
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uint *Size, void *Context);
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long (*ipi_setinfo)(struct TDIObjectID *ID, void *Buffer, uint Size);
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long (*ipi_getelist)(void *, uint *);
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IP_STATUS (*ipi_setmcastaddr)(IPAddr, IPAddr, uint);
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uint (*ipi_invalidsrc)(IPAddr);
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uint (*ipi_isdhcpinterface)(void *IPContext);
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}; /* IPInfo */
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typedef struct IPInfo IPInfo;
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/*INC*/
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#define PACKET_OWNER_LINK 0
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#define PACKET_OWNER_IP 1
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// Definiton of destination types. We use the low bit to indicate that a type is a broadcast
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// type. All local types must be less than DEST_REMOTE.
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#define DEST_LOCAL 0 // Destination is local.
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#define DEST_BCAST 1 // Destination is net or local bcast.
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#define DEST_SN_BCAST 3 // A subnet bcast.
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#define DEST_MCAST 5 // A local mcast.
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#define DEST_REMOTE 6 // Destination is remote.
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#define DEST_REM_BCAST 7 // Destination is a remote broadcast
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#define DEST_REM_MCAST 9 // Destination is a remote mcast.
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#define DEST_INVALID 0xff // Invalid destination
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#define DEST_BCAST_BIT 1
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#define DEST_OFFNET_BIT 0x10 // Destination is offnet -
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// used only by upper layer
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// callers.
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/*NOINC*/
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#define IS_BCAST_DEST(D) ((D) & DEST_BCAST_BIT)
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// The following macro is to be used ONLY on the destination returned from
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// OpenRCE, and only by upper layer callers.
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#define IS_OFFNET_DEST(D) ((D) & DEST_OFFNET_BIT)
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/*INC*/
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// Definition of an IP receive buffer chain.
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struct IPRcvBuf {
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struct IPRcvBuf *ipr_next; // Next buffer descriptor in chain.
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uint ipr_owner; // Owner of buffer.
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uchar *ipr_buffer; // Pointer to buffer.
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uint ipr_size; // Buffer size.
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}; /* IPRcvBuf */
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typedef struct IPRcvBuf IPRcvBuf;
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#define IPR_OWNER_IP 0
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#define IPR_OWNER_ICMP 1
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#define IPR_OWNER_UDP 2
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#define IPR_OWNER_TCP 3
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#define MIN_FIRST_SIZE 200 // Minimum size of first buffer.
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//* Structure of context info. passed down for query entity list.
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struct QEContext {
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uint qec_count; // Number of IDs currently in
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// buffer.
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struct TDIEntityID *qec_buffer; // Pointer to buffer.
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}; /* QEContext */
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typedef struct QEContext QEContext;
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#ifdef NT
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//
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// Functions exported in NT by the IP driver for use by transport
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// layer drivers.
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//
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IP_STATUS
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IPGetInfo(
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IPInfo *Buffer,
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int Size
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);
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void *
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IPRegisterProtocol(
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uchar Protocol,
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void *RcvHandler,
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void *XmitHandler,
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void *StatusHandler,
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void *RcvCmpltHandler
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);
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#endif // NT
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#endif // IP_H_INCLUDED
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