1 files changed, 167 insertions, 0 deletions
diff --git a/roms/ipxe/src/include/ipxe/tcpip.h b/roms/ipxe/src/include/ipxe/tcpip.h
new file mode 100644
index 00000000..200630d6
--- /dev/null
+++ b/roms/ipxe/src/include/ipxe/tcpip.h
@@ -0,0 +1,167 @@
+#ifndef _IPXE_TCPIP_H
+#define _IPXE_TCPIP_H
+
+/** @file
+ *
+ * Transport-network layer interface
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/socket.h>
+#include <ipxe/in.h>
+#include <ipxe/tables.h>
+#include <bits/tcpip.h>
+
+struct io_buffer;
+struct net_device;
+struct ip_statistics;
+
+/** Empty checksum value
+ *
+ * This is the TCP/IP checksum over a zero-length block of data.
+ */
+#define TCPIP_EMPTY_CSUM 0xffff
+
+/** TCP/IP address flags */
+enum tcpip_st_flags {
+	/** Bind to a privileged port (less than 1024)
+	 *
+	 * This value is chosen as 1024 to optimise the calculations
+	 * in tcpip_bind().
+	 */
+	TCPIP_BIND_PRIVILEGED = 0x0400,
+};
+
+/**
+ * TCP/IP socket address
+ *
+ * This contains the fields common to socket addresses for all TCP/IP
+ * address families.
+ */
+struct sockaddr_tcpip {
+	/** Socket address family (part of struct @c sockaddr) */
+	sa_family_t st_family;
+	/** Flags */
+	uint16_t st_flags;
+	/** TCP/IP port */
+	uint16_t st_port;
+	/** Padding
+	 *
+	 * This ensures that a struct @c sockaddr_tcpip is large
+	 * enough to hold a socket address for any TCP/IP address
+	 * family.
+	 */
+	char pad[ sizeof ( struct sockaddr ) -
+		  ( sizeof ( sa_family_t ) /* st_family */ +
+		    sizeof ( uint16_t ) /* st_flags */ +
+		    sizeof ( uint16_t ) /* st_port */ ) ];
+} __attribute__ (( packed, may_alias ));
+
+/** 
+ * A transport-layer protocol of the TCP/IP stack (eg. UDP, TCP, etc)
+ */
+struct tcpip_protocol {
+	/** Protocol name */
+	const char *name;
+       	/**
+         * Process received packet
+         *
+         * @v iobuf		I/O buffer
+	 * @v netdev		Network device
+	 * @v st_src		Partially-filled source address
+	 * @v st_dest		Partially-filled destination address
+	 * @v pshdr_csum	Pseudo-header checksum
+	 * @ret rc		Return status code
+         *
+         * This method takes ownership of the I/O buffer.
+         */
+        int ( * rx ) ( struct io_buffer *iobuf, struct net_device *netdev,
+		       struct sockaddr_tcpip *st_src,
+		       struct sockaddr_tcpip *st_dest, uint16_t pshdr_csum );
+        /** 
+	 * Transport-layer protocol number
+	 *
+	 * This is a constant of the type IP_XXX
+         */
+        uint8_t tcpip_proto;
+};
+
+/**
+ * A network-layer protocol of the TCP/IP stack (eg. IPV4, IPv6, etc)
+ */
+struct tcpip_net_protocol {
+	/** Protocol name */
+	const char *name;
+	/** Network address family */
+	sa_family_t sa_family;
+	/** Fixed header length */
+	size_t header_len;
+	/**
+	 * Transmit packet
+	 *
+	 * @v iobuf		I/O buffer
+	 * @v tcpip_protocol	Transport-layer protocol
+	 * @v st_src		Source address, or NULL to use default
+	 * @v st_dest		Destination address
+	 * @v netdev		Network device (or NULL to route automatically)
+	 * @v trans_csum	Transport-layer checksum to complete, or NULL
+	 * @ret rc		Return status code
+	 *
+	 * This function takes ownership of the I/O buffer.
+	 */
+	int ( * tx ) ( struct io_buffer *iobuf,
+		       struct tcpip_protocol *tcpip_protocol,
+		       struct sockaddr_tcpip *st_src,
+		       struct sockaddr_tcpip *st_dest,
+		       struct net_device *netdev,
+		       uint16_t *trans_csum );
+	/**
+	 * Determine transmitting network device
+	 *
+	 * @v st_dest		Destination address
+	 * @ret netdev		Network device, or NULL
+	 */
+	struct net_device * ( * netdev ) ( struct sockaddr_tcpip *dest );
+};
+
+/** TCP/IP transport-layer protocol table */
+#define TCPIP_PROTOCOLS __table ( struct tcpip_protocol, "tcpip_protocols" )
+
+/** Declare a TCP/IP transport-layer protocol */
+#define __tcpip_protocol __table_entry ( TCPIP_PROTOCOLS, 01 )
+
+/** TCP/IP network-layer protocol table */
+#define TCPIP_NET_PROTOCOLS \
+	__table ( struct tcpip_net_protocol, "tcpip_net_protocols" )
+
+/** Declare a TCP/IP network-layer protocol */
+#define __tcpip_net_protocol __table_entry ( TCPIP_NET_PROTOCOLS, 01 )
+
+extern int tcpip_rx ( struct io_buffer *iobuf, struct net_device *netdev,
+		      uint8_t tcpip_proto, struct sockaddr_tcpip *st_src,
+		      struct sockaddr_tcpip *st_dest, uint16_t pshdr_csum,
+		      struct ip_statistics *stats );
+extern int tcpip_tx ( struct io_buffer *iobuf, struct tcpip_protocol *tcpip,
+		      struct sockaddr_tcpip *st_src,
+		      struct sockaddr_tcpip *st_dest,
+		      struct net_device *netdev,
+		      uint16_t *trans_csum );
+extern struct net_device * tcpip_netdev ( struct sockaddr_tcpip *st_dest );
+extern size_t tcpip_mtu ( struct sockaddr_tcpip *st_dest );
+extern uint16_t generic_tcpip_continue_chksum ( uint16_t partial,
+						const void *data, size_t len );
+extern uint16_t tcpip_chksum ( const void *data, size_t len );
+extern int tcpip_bind ( struct sockaddr_tcpip *st_local,
+			int ( * available ) ( int port ) );
+
+/* Use generic_tcpip_continue_chksum() if no architecture-specific
+ * version is available
+ */
+#ifndef tcpip_continue_chksum
+#define tcpip_continue_chksum generic_tcpip_continue_chksum
+#endif
+
+#endif /* _IPXE_TCPIP_H */