From 05d2a70ed6a3d1b2c098242e66b48ccc4c4592e5 Mon Sep 17 00:00:00 2001
From: hidnplayr <hidnplayr@kolibrios.org>
Date: Thu, 30 Aug 2012 20:32:29 +0000
Subject: [PATCH] Basic LCP implementation, starting with echo request->reply

git-svn-id: svn://kolibrios.org@2961 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 kernel/branches/net/network/PPPoE.inc | 77 +++++++++++++++++++++++++--
 kernel/branches/net/network/stack.inc |  1 +
 2 files changed, 74 insertions(+), 4 deletions(-)

diff --git a/kernel/branches/net/network/PPPoE.inc b/kernel/branches/net/network/PPPoE.inc
index f80e3a00b7..6512d529d1 100644
--- a/kernel/branches/net/network/PPPoE.inc
+++ b/kernel/branches/net/network/PPPoE.inc
@@ -15,23 +15,37 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 struct  PPPoE_frame
-
         VersionAndType  db ?
         Code            db ?
         SessionID       dw ?
         Length          dw ?            ; Length of payload, does NOT include the length PPPoE header.
         Payload         rb 0
-
 ends
 
+struct  LCP_frame
+        Code            db ?
+        Identifier      db ?
+        Length          dw ?
+        Data            rb 0
+ends
 
 uglobal
-
         PPPoE_SID       dw ?
         PPPoE_MAC       dp ?
-
 endg
 
+LCP_config_request      = 1
+LCP_config_ack          = 2
+LCP_config_nak          = 3
+LCP_config_reject       = 4
+LCP_terminate_request   = 5
+LCP_terminate_ack       = 6
+LCP_code_reject         = 7
+LCP_protocol_reject     = 8
+LCP_echo_request        = 9
+LCP_echo_reply          = 10
+LCP_discard_request     = 11
+
 
 ;-----------------------------------------------------------------
 ;
@@ -206,6 +220,9 @@ PPPoE_session_input:
         cmp     ax, PPP_IPv4
         je      IPv4_input
 
+        cmp     ax, PPP_LCP
+        je      LCP_input
+
         DEBUGF  2,"PPPoE_input: Unknown protocol=%x\n", ax
 
   .dump:
@@ -274,9 +291,59 @@ PPPoE_output:
 
 
 
+
+;-----------------------------------------------------------------
+;
+; LCP_input:
+;
+;  IN:  Pointer to buffer in [esp]
+;       size of buffer in [esp+4]
+;       pointer to device struct in ebx
+;       pointer to LCP header in edx
+;       size of LCP packet in ecx
+;  OUT: /
+;
+;-----------------------------------------------------------------
+align 4
+LCP_input:
+
+        DEBUGF  1,"LCP_input\n"
+
+        cmp     [edx + LCP_frame.Code], LCP_echo_request
+        je      .echo
+
+        jmp     .dump
+
+  .echo:
+        mov     [edx + LCP_frame.Code], LCP_echo_reply
+        mov     esi, [esp]
+
+        push    dword [esi + ETH_header.DstMAC]
+        push    dword [esi + ETH_header.SrcMAC]
+        pop     dword [esi + ETH_header.DstMAC]
+        pop     dword [esi + ETH_header.SrcMAC]
+        push    word [esi + ETH_header.DstMAC + 4]
+        push    word [esi + ETH_header.SrcMAC + 4]
+        pop     word [esi + ETH_header.DstMAC + 4]
+        pop     word [esi + ETH_header.SrcMAC + 4]
+
+        call    [ebx + NET_DEVICE.transmit]
+        ret
+
+  .dump:
+        DEBUGF  2,"LCP_input: dumping\n"
+        call    kernel_free
+        add     esp, 4
+        ret
+
+
+
+
 align 4
 PPPoE_start_connection:
 
+        DEBUGF  2,"PPPoE_start_connection: %x\n", cx
+
         cmp     [PPPoE_SID], 0
         jne     .fail
 
@@ -295,6 +362,8 @@ PPPoE_start_connection:
 align 4
 PPPoE_stop_connection:
 
+        DEBUGF  2,"PPPoE_stop_connection\n"
+
         xor     eax, eax
         mov     [PPPoE_SID], ax
         mov     dword [PPPoE_MAC], eax
diff --git a/kernel/branches/net/network/stack.inc b/kernel/branches/net/network/stack.inc
index 036f4e70de..37bad33e97 100644
--- a/kernel/branches/net/network/stack.inc
+++ b/kernel/branches/net/network/stack.inc
@@ -45,6 +45,7 @@ ETHER_PPP_SESSION       = 0x6488
 
 ; PPP protocol numbers
 PPP_IPv4                = 0x2100
+PPP_LCP                 = 0x21c0
 
 ;Protocol family
 AF_UNSPEC               = 0