1 files changed, 18 insertions, 52 deletions

diff --git a/src/drivers/net/rtl8139.c b/src/drivers/net/rtl8139.c
index 08c2b1a..c119112 100644
--- a/src/drivers/net/rtl8139.c
+++ b/src/drivers/net/rtl8139.c
@@ -86,6 +86,8 @@ static rtl8139_vtable_t const rtl8139_vtable = {
 // header 
 #define PACKET_HEADER_ROK 0x0001
 
+#define ETHERNET_MIN_FRAME_SIZE_IEEE_802_3 64
+
 // receive buffer, set to 8k + header (16) + wrap (2k)
 #define RECEIVE_BUFFER_SIZE 8192
 #define RECEIVE_TOTAL_BUFFER_SIZE RECEIVE_BUFFER_SIZE + 16 + 2048
@@ -270,14 +272,21 @@ static void handle_receive_packet( rtl8139_t *rtl8139 )
 		for( int i = len; i < len + 4; i++ ) {
 			printf( "%X ", rtl8139->receive_buffer[rtl8139->receive_buffer_pos+i] );
 		}
+		puts( "" );
 #endif
 
-		// copy data for the handler of the network event
 		network_event_t event;
-		event.length = len;
-		event.data = (uint8_t *)malloc( len );
-		memcpy( event.data, buffer, len );
-		memset( rtl8139->receive_buffer, 0, len + 2 * sizeof( uint16_t ) );
+
+		if( len >= ETHERNET_MIN_FRAME_SIZE_IEEE_802_3 ) {
+			// copy data for the handler of the network event
+			event.length = len;
+			event.data = (uint8_t *)malloc( len );
+			memcpy( event.data, buffer, len );
+			memset( rtl8139->receive_buffer, 0, len + 2 * sizeof( uint16_t ) );
+		} else {
+			// make sure we don't have a runt package
+			puts( "rtl8139: too small frame seen. packet ignored." );
+		}
 
 		// adjust buffer pos
 		rtl8139->receive_buffer_pos += 2 * sizeof( uint16_t );
@@ -292,53 +301,10 @@ static void handle_receive_packet( rtl8139_t *rtl8139 )
 		// documentation of the card!)
 		port16_write( &rtl8139->CAPR_port, rtl8139->receive_buffer_pos - 16 );
 		
-		rtl8139->base.handler( &event, rtl8139 );
+		if( len >= ETHERNET_MIN_FRAME_SIZE_IEEE_802_3 ) {
+			rtl8139->base.handler( &event, rtl8139 );
+		}
 	}
-
-#if 0
-
-    while (1)
-    {
-        netcard->rx_buffer_offset += 4;
-
-        if (length >= sizeof(struct eth_packet_header))
-        {
-            uint8_t data[length - 4];
-            if ((netcard->rx_buffer_offset + length - 4) >= RX_BUFFER_SIZE) {
-                // FIXME Beim Umbruch gehen Daten kaputt
-                memcpy(data, buffer, RX_BUFFER_SIZE - netcard->rx_buffer_offset);
-                memcpy(
-                    data + RX_BUFFER_SIZE - netcard->rx_buffer_offset,
-                    netcard->rx_buffer,
-                    (length - 4) - (RX_BUFFER_SIZE - netcard->rx_buffer_offset)
-                );
-            } else {
-                memcpy(data, buffer, length - 4);
-            }
-
-            cdi_net_receive(
-                (struct cdi_net_device*) netcard,
-                data,
-                length - 4);
-        }
-
---
-
-   // Den aktuellen Offset im Lesepuffer anpassen. Jedes Paket ist
-   // dword-aligned, daher anschließend Aufrundung.
-   netcard->rx_buffer_offset += length + 4;
-   netcard->rx_buffer_offset = (netcard->rx_buffer_offset + 3) & ~0x3;
-
-   // Überläufe abfangen
-   netcard->rx_buffer_offset %= 0x2000;
-
-   write_register_word(netcard, REG_CUR_READ_ADDR,
-       netcard->rx_buffer_offset - 0x10);
-
-
-
-    }
-#endif
 }
 
 uint32_t rtl8139_handle_interrupt( interrupt_handler_t *handler, uint32_t esp )
@@ -377,7 +343,7 @@ void rtl8139_print_info( void *obj )
 {
 	rtl8139_t *rtl8139 = (rtl8139_t *)obj;
 
-	char buf[20];
+	char buf[NETWORK_ETHERNET_MAC_ADDR_STRING];
 	char buf2[30];
 	if( rtl8139->model == NULL ) {
 		snprintf( buf2, 30, "unknown submodel 0x%X", rtl8139->model_id );