Re: [lwip-users] Porting/memory/connect issues

[Hampus Thorell]

Hey!

I am only using the internal memory of the FPGA chip (128kb +128kb +64kb).

The modifications I made that really made a difference was that I set 
config_pthread_support - pthread_stack_size to 1000 (default) and 
config_pthread_support - max_pthreads to 10 (default). I also changed 
pbuf_options - pbuf_pool_bufsize to 32 which results in a pretty small 
stack. These modifications together with some smaller changes gave me a 
total size of 220 kb.

Hampus

Matthew Yingling wrote:
> Hi Hampus,
>
> No external memory?  This sounds interesting.  Are you using a Microblaze or
> PowerPC processor or some custom hardware approach?  Whenever I tried
> limiting the memory footprint it was still far too large to fit within chip
> resources.  What kind of settings are you using?
>
> Thanks,
> Matthew Yingling
>
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden Behalf Of
> Hampus Thorell
> Sent: Wednesday, June 21, 2006 5:41 AM
> To: address@hidden
> Subject: [lwip-users] Porting/memory/connect issues
>
>
> Hello!
>
> I am trying to port LwIP to a Xilinx v2p system with an external mac and
> no external memory. I have basically used the echoserver on Xilinx homepage.
>
> I have managed to get the server up and running and I can ping it.
> However I can't seem to get an echo client to connect to it. When using
> the LwIP debug switch I get the following errors during startup:
> "sys_sem_new: Error --  Out of semaphore resources" - This error message
> repeats itself three times
>
> Then I get the following error message:
>
> "memp_malloc: out of memory in pool 10"
>
> This message also appears when trying to connect with the echo-client.
> It then looks like this:
>
> ****************************************************************************
> **
> tcpip_thread: IP packet
> ip_input: iphdr->dest 0x96E320F1 netif->ip_addr 0x96E320F1 (0x96E30000,
> 0x96E30000, 0x20F1)
> ip_input: packet accepted on interface e0
> ip_input:
> IP header:
> +-------------------------------+
> | 4 | 5 |  0x00 |          | (v, hl, tos, len)
> +-------------------------------+
> |          ||       | (id, flags, offset)
> +-------------------------------+
> |    |    |    0x0080     | (ttl, proto, chksum)
> +-------------------------------+
> |  150  |  227  |   32  |  187  | (src)
> +-------------------------------+
> |  150  |  227  |   32  |  241  | (dest)
> +-------------------------------+
> ip_input: p->len 48 p->tot_len 48
> TCP header:
> +-------------------------------+
> |          |          | (src port, dest port)
> +-------------------------------+
> |                     | (seq no)
> +-------------------------------+
> |                     | (ack no)
> +-------------------------------+
> |  |   ||          | (hdrlen, flags (SYNpbuf_alloc(length=) ), win)
> +-------------------------------+
> |    0xFC3F     |          | (chksum, urgp)
> +-------------------------------
> pbuf_alloc: allocated pbuf
> pbuf_alloc(length=) ==
> pbuf_header: old  new  (-106608)
> +
> pbuf_header: old  new  (-111250)
> pbuf_header: old  new  (-111230)
> tcp_input: packed for LISTENing connection.
> TCP connection request  -> .
> memp_malloc: out of memory in pool 10
>
> ****************************************************************************
> **
>
> Does anyone know if this is the reason I can't connect with the client
> and possibly how it can be solved?
>
> Best regards,
>
> Hampus
>
>
>
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