# HG changeset patch
# Parent c979b95fd7fbc4c38849cf42a458a50d8d2d6901
rathaxes: add sk_buff abstraction and add the implementation of the xmit function for the ethernet system. We have a fully (empty) functionnal ethernet driver

diff -r c979b95fd7fb rathaxes/samples/lkm/CMakeLists.txt
--- a/rathaxes/samples/lkm/CMakeLists.txt	Sat Jan 07 12:15:32 2012 +0100
+++ b/rathaxes/samples/lkm/CMakeLists.txt	Sat Jan 07 12:46:06 2012 +0100
@@ -1,6 +1,6 @@
 ADD_RATHAXES_SOURCES(lkm lkm.rtx
-                     RTI log.rti lkm.rti pci.rti ethernet.rti
-                     BLT log.blt lkm.blt pci.blt ethernet.blt)
+                     RTI log.rti lkm.rti pci.rti socket.rti ethernet.rti
+                     BLT log.blt lkm.blt pci.blt socket.blt ethernet.blt)
 
 # We can't name lkm since it's already used as the target name to generate the
 # source (with ADD_RATHAXES_SOURCES).
diff -r c979b95fd7fb rathaxes/samples/lkm/ethernet.blt
--- a/rathaxes/samples/lkm/ethernet.blt	Sat Jan 07 12:15:32 2012 +0100
+++ b/rathaxes/samples/lkm/ethernet.blt	Sat Jan 07 12:46:06 2012 +0100
@@ -1,4 +1,4 @@
-with Ethernet, PCI, LKM
+with Ethernet, Socket, PCI, LKM
 {
     template type   Ethernet::Device()
     {
@@ -51,6 +51,24 @@
         }
     }
 
+    template sequence   Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
+    {
+        chunk LKM::prototypes()
+        {
+            static int  rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev);
+        }
+
+        chunk LKM::code()
+        {
+            static int  rtx_ethernet_xmit(struct sk_buff* skb, struct net_device *dev)
+            {
+                ${pointcut ::IMPLEMENTATION};
+
+                return 0;
+            }
+        }
+    }
+
     template sequence   Ethernet::close(Ethernet::Device dev)
     {
         chunk LKM::prototypes()
@@ -100,7 +118,7 @@
             {
                 .ndo_open = rtx_ethernet_open,
                 .ndo_stop = rtx_ethernet_close,
-                .ndo_start_xmit = NULL,
+                .ndo_start_xmit = rtx_ethernet_xmit,
             };
         }
 
diff -r c979b95fd7fb rathaxes/samples/lkm/ethernet.rti
--- a/rathaxes/samples/lkm/ethernet.rti	Sat Jan 07 12:15:32 2012 +0100
+++ b/rathaxes/samples/lkm/ethernet.rti	Sat Jan 07 12:46:06 2012 +0100
@@ -1,4 +1,4 @@
-interface Ethernet : PCI, LKM
+interface Ethernet : Socket, PCI, LKM
 {
     provided type       Ethernet::Device;
 
@@ -10,6 +10,12 @@
         provided chunk  LKM::code;
     }
 
+    required sequence   Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
+    {
+        provided chunk  LKM::prototypes;
+        provided chunk  LKM::code;
+    }
+
     required sequence   Ethernet::close(Ethernet::Device)
     {
         provided chunk  LKM::prototypes;
diff -r c979b95fd7fb rathaxes/samples/lkm/lkm.rtx
--- a/rathaxes/samples/lkm/lkm.rtx	Sat Jan 07 12:15:32 2012 +0100
+++ b/rathaxes/samples/lkm/lkm.rtx	Sat Jan 07 12:46:06 2012 +0100
@@ -15,6 +15,11 @@
         Log::info("Got an interruption");
     }
 
+    Ethernet::send(Ethernet::Device dev, Socket::SKBuff skb)
+    {
+        Log::info("We have one packet to transmit!");
+    }
+
     PCI::probe(PCI::Device dev)
     {
         Log::info("Probe the device");
diff -r c979b95fd7fb rathaxes/samples/lkm/socket.blt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rathaxes/samples/lkm/socket.blt	Sat Jan 07 12:46:06 2012 +0100
@@ -0,0 +1,27 @@
+with Socket, LKM
+{
+    template type Socket::SKBuff()
+    {
+        chunk LKM::includes()
+        {
+            #include <linux/sk_buff.h>
+        }
+
+        chunk ::decl()
+        {
+            struct sk_buff;
+        }
+
+        chunk ::init()
+        {
+        }
+
+        map
+        {
+            // some work may have to be done here in order
+            // to access to some field of the sk_buff.
+            // We should determine if all the sk_buff managment
+            // can be abstracted from the user.
+        }
+    }
+}
diff -r c979b95fd7fb rathaxes/samples/lkm/socket.rti
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rathaxes/samples/lkm/socket.rti	Sat Jan 07 12:46:06 2012 +0100
@@ -0,0 +1,4 @@
+interface Socket : LKM
+{
+    provided type Socket::SKBuff;
+}