Re: [Qemu-devel] Status of user-mode networking for win32

[Renzo Davoli]

On Mon, Jun 07, 2004 at 05:01:35PM +0300, Elefterios Stamatogiannakis wrote:
>  The problem is that it doesn't seem to connect to the outside world.
I have seen with a packet sniffer that the packet payload was 16 bits
misaligned.

I have tried the workaround here included as a patch and 
Win98+vdeqemu pci works.

I am trying to figure out if this is a correct patch or it is the 
writel/readl call parameter to be wrong. (word sized transfers should be
aligned...)

renzo
---------------
--- hw/ne2000.c.orig    2004-06-07 16:14:28.000000000 +0200
+++ hw/ne2000.c 2004-06-07 16:27:14.000000000 +0200
@@ -401,7 +401,8 @@
 static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr, 
                                      uint32_t val)
 {
-    addr &= ~3; /* XXX: check exact behaviour if not even */
+    /*addr &= ~3; XXX: check exact behaviour if not even */
+    addr &= ~1; /* XXX: check exact behaviour if not even */
     if (addr < 32 || 
         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
         *(uint32_t *)(s->mem + addr) = cpu_to_le32(val);
@@ -431,7 +432,8 @@
 
 static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
 {
-    addr &= ~3; /* XXX: check exact behaviour if not even */
+    /*addr &= ~3;  XXX: check exact behaviour if not even */
+    addr &= ~1; /* XXX: check exact behaviour if not even */
     if (addr < 32 || 
         (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
         return le32_to_cpu(*(uint32_t *)(s->mem + addr));