From 1fc22f7bcefeff1b4ee7145c92d81d4c70fe26e4 Mon Sep 17 00:00:00 2001
From: hidnplayr <hidnplayr@kolibrios.org>
Date: Tue, 9 Apr 2013 10:47:23 +0000
Subject: [PATCH] Experimental support for MSG_PEEK and MSG_DONTWAIT in
 SOCKET_receive_stream.

git-svn-id: svn://kolibrios.org@3459 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 kernel/branches/net/network/socket.inc | 13 +++++++++++++
 kernel/branches/net/network/stack.inc  | 10 ++++++++++
 2 files changed, 23 insertions(+)

diff --git a/kernel/branches/net/network/socket.inc b/kernel/branches/net/network/socket.inc
index 0a37a266e..98fdbd216 100644
--- a/kernel/branches/net/network/socket.inc
+++ b/kernel/branches/net/network/socket.inc
@@ -848,12 +848,20 @@ SOCKET_receive_stream:
 
         DEBUGF  1,"SOCKET_receive: STREAM\n"
 
+        mov     ebx, edi
         mov     ecx, esi
         mov     edi, edx
         xor     edx, edx
+
+        test    ebx, MSG_DONTWAIT
+        jnz     .dontwait
   .loop:
         cmp     [eax + STREAM_SOCKET.rcv + RING_BUFFER.size], 0
         je      .block
+  .dontwait:
+        test    ebx, MSG_PEEK
+        jnz     .peek
+
         add     eax, STREAM_SOCKET.rcv
         call    SOCKET_ring_read
         call    SOCKET_ring_free
@@ -861,6 +869,11 @@ SOCKET_receive_stream:
         mov     [esp+32], ecx                                   ; return number of bytes copied
         ret
 
+  .peek:
+        mov     ecx, [eax + STREAM_SOCKET.rcv + RING_BUFFER.size]
+        mov     [esp+32], ecx                                   ; return number of bytes available
+        ret
+
   .block:
         test    [eax + SOCKET.options], SO_NONBLOCK
         jnz     s_error
diff --git a/kernel/branches/net/network/stack.inc b/kernel/branches/net/network/stack.inc
index d418d5270..f8bf99c13 100644
--- a/kernel/branches/net/network/stack.inc
+++ b/kernel/branches/net/network/stack.inc
@@ -83,6 +83,10 @@ SO_BINDTODEVICE         = 1 shl 9
 SO_BLOCK                = 1 shl 10    ; TO BE REMOVED
 SO_NONBLOCK             = 1 shl 31
 
+; Socket flags for user calls
+MSG_PEEK                = 0x02
+MSG_DONTWAIT            = 0x40
+
 ; Socket level
 SOL_SOCKET              = 0
 
@@ -264,6 +268,12 @@ stack_handler:
         cmp     [NET_RUNNING], 0
         je      .exit
 
+        cmp     [UDP_PACKETS_TX], 50
+        jb      @f
+        DEBUGF  1, "\n\nCRAP!\n\n"
+        jmp     $
+      @@:
+
         ; Test for 10ms tick
         mov     eax, [timer_ticks]
         cmp     eax, [net_10ms]