diff --git a/src/include/gpxe/interface.h b/src/include/gpxe/interface.h deleted file mode 100644 index d0f68b84..00000000 --- a/src/include/gpxe/interface.h +++ /dev/null @@ -1,90 +0,0 @@ -#ifndef _GPXE_INTERFACE_H -#define _GPXE_INTERFACE_H - -/** @file - * - * Transport-network layer interface - * - */ - -#include -#include -#include - -struct pk_buff; -struct net_protocol; -struct trans_protocol; -struct tcpip_net_protocol; - -/** - * A transport-layer protocol - */ -struct trans_protocol { - /** Protocol name */ - const char *name; - /** - * Process received packet - * - * @v pkb Packet buffer - * @v netdev Network device - * @v ll_source Link-layer source address - * - * This method takes ownership of the packet buffer. - */ - void ( * rx ) ( struct pk_buff *pkb, struct in_addr *src_net_addr, struct in_addr *dest_net_addr ); - /** - * Transport-layer protocol number - * - * This is a constant of the type IP_XXX - */ - uint8_t trans_proto; -}; - -/** - * A TCPIP supporting protocol - */ -struct tcpip_net_protocol { - /** Network protocol */ - struct net_protocol *net_protocol; - /** Network address family */ - sa_family_t sa_family; - /** Complete transport-layer checksum calculation - * - * @v pkb Packet buffer - * @v trans_proto Transport-layer protocol number - * - * This function expects a network-layer datagram in its packet with the protocol field in the - * IP header to be filled up. It constructs a psuedo-header using the information provided in - * the IP header and computes the checksum over the pseudo-header. The checksum offset in the - * transport layer header can be determined without the need of an offset value as - * - * void *csum_offset = pkb->data + NET_HLEN + csum_offset ( trans_proto ); - * - * where, - * csum_offset ( IP_TCP ) = 16 - * csum_offset ( IP_UDP ) = 6 - */ - void ( * tx_csum ) ( struct pk_buff *pkb ); -}; - -/** - * Register a transport-layer protocol - * - * @v protocol Transport-layer protocol - */ -#define TRANS_PROTOCOL( protocol ) \ - struct trans_protocol protocol __table ( trans_protocols, 01 ) - -#define TCPIP_NET_PROTOCOL( protocol ) \ - struct tcpip_net_protocol protocol __table ( tcpip_net_protocols, 01 ) - -extern void trans_rx ( struct pk_buff *pkb, uint8_t trans_proto, struct in_addr *src, struct in_addr *dest ); -extern int trans_tx ( struct pk_buff *pkb, uint8_t trans_proto, struct sockaddr *dest ); - -extern uint16_t calc_chksum ( void *data, size_t len ); - -/** Do we need these functions? -Nikhil, 24-6-06 */ -extern struct trans_protocol * find_trans_protocol ( uint8_t trans_proto ); -extern struct tcpip_net_protocol * find_tcpip_net_protocol ( sa_family_t sa_family ); - -#endif /* _GPXE_INTERFACE_H */ diff --git a/src/net/interface.c b/src/net/interface.c deleted file mode 100644 index f028d6a5..00000000 --- a/src/net/interface.c +++ /dev/null @@ -1,132 +0,0 @@ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/** @file - * - * Transport-network layer interface - * - * This file contains functions and utilities for the transport-network layer interface - */ - -/** Registered protocols that support TCPIP */ -static struct tcpip_net_protocol tcpip_net_protocols[0] __table_start ( tcpip_net_protocols ); -static struct tcpip_net_protocol tcpip_net_protocols_end[0] __table_end ( tcpip_net_protocols ); - -struct trans_protocol; - -/** Registered transport-layer protocols */ -static struct trans_protocol trans_protocols[0] __table_start ( trans_protocols ); -static struct trans_protocol trans_protocols_end[0] __table_end ( trans_protocols ); - -/** Identify TCPIP net protocol - * - * @v sa_family Network address family - * @ret tcpip Protocol supporting TCPIP, or NULL - */ -static struct tcpip_net_protocol * tcpip_find_protocol ( sa_family_t sa_family ) { - struct tcpip_net_protocol *tcpip; - - for ( tcpip = tcpip_net_protocols; tcpip < tcpip_net_protocols_end; tcpip++ ) { - if ( tcpip->sa_family == sa_family ) { - return tcpip; - } - } - return NULL; -} - -/** Identify transport-layer protocol - * - * @v trans_proto Transport-layer protocol number, IP_XXX - * @ret trans_protocol Transport-layer protocol, or NULL - */ -struct trans_protocol* find_trans_protocol ( uint8_t trans_proto ) { - struct trans_protocol *trans_protocol; - - for ( trans_protocol = trans_protocols; trans_protocol <= trans_protocols_end; ++trans_protocol ) { - if ( trans_protocol->trans_proto == trans_proto ) { - return trans_protocol; - } - } - return NULL; -} - -/** Process a received packet - * - * @v pkb Packet buffer - * @v trans_proto Transport-layer protocol number - * @v src Source network-layer address - * @v dest Destination network-layer address - * - * This function expects a transport-layer segment from the network-layer - */ -void trans_rx ( struct pk_buff *pkb, uint8_t trans_proto, struct in_addr *src, struct in_addr *dest ) { - struct trans_protocol *trans_protocol; - - /* Identify the transport layer protocol */ - for ( trans_protocol = trans_protocols; trans_protocol <= trans_protocols_end; ++trans_protocol ) { - if ( trans_protocol->trans_proto == trans_proto ) { - DBG ( "Packet sent to %s module", trans_protocol->name ); - trans_protocol->rx ( pkb, src, dest ); - } - } -} - -/** Transmit a transport-layer segment - * - * @v pkb Packet buffer - * @v trans_proto Transport-layer protocol - * @v sock Destination socket address - * @ret Status - */ -int trans_tx ( struct pk_buff *pkb, uint8_t trans_proto, struct sockaddr *sock ) { - - /* Identify the network layer protocol and send it using xxx_tx() */ - switch ( sock->sa_family ) { - case AF_INET: /* IPv4 network family */ - return ipv4_tx ( pkb, trans_proto, &sock->sin.sin_addr ); - case AF_INET6: /* IPv6 network family */ - return ipv6_tx ( pkb, trans_proto, &sock->sin6.sin6_addr ); - default: - DBG ( "Network family %d not supported", sock->sa_family ); - } - return -EPROTONOSUPPORT; -} - -/** - * Calculate internet checksum - * - * @v data Pointer to the data - * @v len Length of data to be checksummed - * @ret chksum 16 bit internet checksum - * - * This function calculates the internet checksum (refer RFC1071) for len bytes beginning at the location data - */ -uint16_t calc_chksum ( void *data, size_t len ) { - register long sum = 0; - uint16_t checksum; - unsigned short *temp; - while ( len > 1 ) { - temp = (unsigned short*) data++; - sum += *temp; - len -= 2; - } - if ( len > 0 ) { - sum += *(unsigned char *)data; - } - while ( sum >> 16 ) { - sum = ( sum & 0xffff ) + ( sum >> 16 ); - } - checksum = ~sum; - return checksum; -} - -