From ce330875f599c7287b33e61a7a6b957c4fe07c15 Mon Sep 17 00:00:00 2001
From: hidnplayr <hidnplayr@kolibrios.org>
Date: Wed, 30 Jul 2014 09:44:18 +0000
Subject: [PATCH] Moved TCP slow timer handler to separate thread, to avoid
 possible deadlocks.

git-svn-id: svn://kolibrios.org@5013 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 kernel/trunk/network/stack.inc     |  7 ++++++-
 kernel/trunk/network/tcp.inc       | 11 ++++++++++-
 kernel/trunk/network/tcp_timer.inc | 22 +++++++++++++---------
 3 files changed, 29 insertions(+), 11 deletions(-)

diff --git a/kernel/trunk/network/stack.inc b/kernel/trunk/network/stack.inc
index 544bb66d4d..9510f0ca57 100644
--- a/kernel/trunk/network/stack.inc
+++ b/kernel/trunk/network/stack.inc
@@ -313,10 +313,15 @@ stack_handler:
         test    [net_10ms], 0x3f        ; 640ms
         jnz     .exit
 
-        TCP_timer_640ms
         ARP_decrease_entry_ttls
         IPv4_decrease_fragment_ttls
 
+        xor     edx, edx
+        mov     eax, [TCP_timer1_event]
+        mov     ebx, [eax + EVENT.id]
+        xor     esi, esi
+        call    raise_event
+
   .exit:
         ret
 
diff --git a/kernel/trunk/network/tcp.inc b/kernel/trunk/network/tcp.inc
index 1494788f87..69b388cf8d 100644
--- a/kernel/trunk/network/tcp.inc
+++ b/kernel/trunk/network/tcp.inc
@@ -141,6 +141,7 @@ align 4
         TCP_sequence_num        dd ?
         TCP_queue               rd (TCP_QUEUE_SIZE*sizeof.TCP_queue_entry + sizeof.queue)/4
         TCP_input_event         dd ?
+        TCP_timer1_event        dd ?
 endg
 
 uglobal
@@ -224,7 +225,15 @@ macro   TCP_init {
         call    new_sys_threads
         test    eax, eax
         jns     @f
-        DEBUGF  DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP, error %d\n', eax
+        DEBUGF  DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP input, error %d\n', eax
+  @@:
+
+        movi    ebx, 1
+        mov     ecx, TCP_timer_640ms
+        call    new_sys_threads
+        test    eax, eax
+        jns     @f
+        DEBUGF  DEBUG_NETWORK_ERROR,'K : cannot create kernel thread for TCP timer, error %d\n', eax
   @@:
 
 }
diff --git a/kernel/trunk/network/tcp_timer.inc b/kernel/trunk/network/tcp_timer.inc
index a78f99134c..222d16e03b 100644
--- a/kernel/trunk/network/tcp_timer.inc
+++ b/kernel/trunk/network/tcp_timer.inc
@@ -61,13 +61,18 @@ local   .exit
 }
 
 
-;----------------------
-; 640 ms timer
-;----------------------
-macro   TCP_timer_640ms {                       ; TODO: implement timed wait timer!
+align 4
+proc TCP_timer_640ms            ; TODO: implement timed wait timer!
 
-local   .loop
-local   .exit
+        xor     esi, esi
+        mov     ecx, MANUAL_DESTROY
+        call    create_event
+        mov     [TCP_timer1_event], eax
+
+  .wait:
+        mov     eax, [TCP_timer1_event]
+        mov     ebx, [eax + EVENT.id]
+        call    wait_event
 
 ; Update TCP sequence number
 
@@ -81,7 +86,7 @@ local   .exit
         mov     eax, [eax + SOCKET.NextPtr]
   .check_only:
         or      eax, eax
-        jz      .exit
+        jz      .wait
 
         cmp     [eax + SOCKET.Domain], AF_INET4
         jne     .loop
@@ -157,9 +162,8 @@ local   .exit
         mov     [eax + TCP_SOCKET.t_force], 0
 
         jmp     .loop
-  .exit:
 
-}
+endp