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Minor changes to the network layer rx() functions
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@ -66,6 +66,6 @@ extern void del_ipv4_address ( struct net_device *netdev );
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extern int ipv4_uip_tx ( struct pk_buff *pkb );
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extern int ipv4_tx ( struct pk_buff *pkb, struct tcpip_protocol *tcpip,
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struct in_addr *dest );
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struct sockaddr *sock );
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#endif /* _GPXE_IP_H */
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@ -31,7 +31,9 @@ struct tcpip_protocol {
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*
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* This method takes ownership of the packet buffer.
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*/
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void ( * rx ) ( struct pk_buff *pkb, struct in_addr *src_net_addr, struct in_addr *dest_net_addr );
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void ( * rx ) ( struct pk_buff *pkb, struct in_addr *src_net_addr,
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struct in_addr *dest_net_addr );
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/**
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* Transport-layer protocol number
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*
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@ -42,8 +44,8 @@ struct tcpip_protocol {
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* Checksum offset
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*
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* A negative number indicates that the protocol does not require
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* checksumming to be performed by the network layer. A positive number is
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* the offset of the checksum field in the transport-layer header.
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* checksumming to be performed by the network layer. A positive number
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* is the offset of the checksum field in the transport-layer header.
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*/
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int csum_offset;
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};
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@ -56,6 +58,15 @@ struct tcpip_net_protocol {
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struct net_protocol *net_protocol;
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/** Network address family */
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sa_family_t sa_family;
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/**
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* Transmit packet
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*
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* @v pkb Packet buffer
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* @v tcpip Transport-layer TCP/IP protocol
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* @v sock Socket address
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*/
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int ( * tx ) ( struct pk_buff *pkb, struct tcpip_protocol *tcpip,
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struct sockaddr *sock );
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/** Complete transport-layer checksum calculation
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*
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* @v pkb Packet buffer
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@ -347,7 +347,8 @@ int ipv4_uip_tx ( struct pk_buff *pkb ) {
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* This function expects a transport-layer segment and prepends the IP header
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*/
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int ipv4_tx ( struct pk_buff *pkb, struct tcpip_protocol *tcpip,
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struct in_addr *dest ) {
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struct sockaddr* sock ) {
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struct in_addr *dest = &sock->sin.sin_addr;
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struct iphdr *iphdr = pkb_push ( pkb, sizeof ( *iphdr ) );
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struct ipv4_miniroute *miniroute;
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struct net_device *netdev = NULL;
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@ -613,6 +614,8 @@ NET_PROTOCOL ( ipv4_protocol );
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/** IPv4 TCPIP net protocol */
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struct tcpip_net_protocol ipv4_tcpip_protocol = {
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.net_protocol = &ipv4_protocol,
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.sa_family = AF_INET,
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.tx = ipv4_tx,
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.tx_csum = ipv4_tx_csum,
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};
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@ -1,12 +1,16 @@
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#include <errno.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <byteswap.h>
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#include <gpxe/pkbuff.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/in.h>
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#include <gpxe/if_ether.h>
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#include <gpxe/tcpip.h>
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/**
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* Transmit IP6 packets
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*
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* Placeholder to allow linking. The function should be placed in net/ipv6.c
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*/
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int ipv6_tx ( struct pk_buff *pkb __unused, uint16_t trans_proto __unused,
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struct in6_addr *dest __unused) {
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@ -22,3 +26,33 @@ void ipv6_rx ( struct pk_buff *pkb __unused,
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struct net_device *netdev __unused,
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const void *ll_source __unused ) {
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}
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void ipv6_tx_csum ( struct pk_buff *pkb, struct tcpip_protocol *tcpip ) {
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return;
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}
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static const char * ipv6_ntoa ( const void *net_addr ) {
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// return inet6_ntoa ( * ( ( struct in6_addr * ) net_addr ) );
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return "no support yet";
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}
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/** IPv6 protocol */
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struct net_protocol ipv6_protocol = {
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.name = "IP6",
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.net_proto = htons ( ETH_P_IPV6 ),
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.net_addr_len = sizeof ( struct in6_addr ),
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.rx = ipv6_rx,
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.ntoa = ipv6_ntoa,
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};
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NET_PROTOCOL ( ipv6_protocol );
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/** IPv6 TCPIP net protocol */
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struct tcpip_net_protocol ipv6_tcpip_protocol = {
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.net_protocol = &ipv6_protocol,
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.sa_family = AF_INET6,
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.tx = ipv6_tx,
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.tx_csum = ipv6_tx_csum,
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};
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TCPIP_NET_PROTOCOL ( ipv6_tcpip_protocol );
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@ -5,6 +5,7 @@
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#include <byteswap.h>
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#include <gpxe/in.h>
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#include <gpxe/ip.h>
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#include <gpxe/ip6.h>
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#include <gpxe/pkbuff.h>
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#include <gpxe/tables.h>
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#include <gpxe/netdevice.h>
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@ -41,7 +42,6 @@ void tcpip_rx ( struct pk_buff *pkb, uint8_t trans_proto, struct in_addr *src,
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/* Identify the transport layer protocol */
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for ( tcpip = tcpip_protocols; tcpip <= tcpip_protocols_end; ++tcpip ) {
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if ( tcpip->trans_proto == trans_proto ) {
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DBG ( "Packet sent to %s module", tcpip->name );
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tcpip->rx ( pkb, src, dest );
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}
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}
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@ -57,17 +57,38 @@ void tcpip_rx ( struct pk_buff *pkb, uint8_t trans_proto, struct in_addr *src,
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int tcpip_tx ( struct pk_buff *pkb, struct tcpip_protocol *tcpip,
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struct sockaddr *sock ) {
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#if 0 /* This is the right thing to do */
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struct tcpip_net_protocol *tcpip_net;
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/* Identify the network layer protocol */
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for ( tcpip_net = tcpip_net_protocols;
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tcpip_net <= tcpip_net_protocols_end; ++tcpip_net ) {
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if ( tcpip_net->sa_family == sock->sa_family ) {
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DBG ( "Packet sent to %s module\n", tcpip_net->net_protocol->name );
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return tcpip_net->tx ( pkb, tcpip, sock );
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}
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}
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DBG ( "No suitable network layer protocol found for sa_family %s\n",
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( sock->sa_family );
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return -EAFNOSUPPORT;
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}
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#else
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/* Identify the network layer protocol and send it using xxx_tx() */
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switch ( sock->sa_family ) {
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case AF_INET: /* IPv4 network family */
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return ipv4_tx ( pkb, tcpip, &sock->sin.sin_addr );
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return ipv4_tx ( pkb, tcpip, sock );
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case AF_INET6: /* IPv6 network family */
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return ipv6_tx ( pkb, tcpip, &sock->sin6.sin6_addr );
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return ipv6_tx ( pkb, tcpip, sock );
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}
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DBG ( "Network family %d not supported", sock->sa_family );
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return -EAFNOSUPPORT;
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}
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#endif
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/**
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* Calculate continued TCP/IP checkum
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*
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