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

[Hampus Thorell]

Hello again,

I set memp_num_sys_timeout to 3 and the "out of memory" error message 
disappeared. However, I can still not connect with my client.

During connect the following is now printed instead:

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 (SYN ), win)
+-------------------------------+
|    0x6A68     |          | (chksum, urgp)
+-------------------------------+
pbuf_header: old  new  (-109638)
pbuf_header: old  new  (-109618)
tcp_input: packed for LISTENing connection.
TCP connection request  -> .
sys_timeout:  msecs= h= arg=
tcp_enqueue(pcb=, arg=, len=, flags=FFFE2ED0, copy=)
tcp_enqueue: queuelen:
ssw h=()
tcp_slowtmr: processing active pcb
tcp_slowtmr: polling application
tcp_output: nothing to send ()
tcp_output: snd_wnd , cwnd , wnd , seg == NULL, ack
sys_timeout:  msecs= h= arg=
ssw h=()
sys_timeout:  msecs= h= arg=
ssw h=()
tcp_slowtmr: processing active pcb
tcp_slowtmr: polling application
tcp_output: nothing to send ()
tcp_output: snd_wnd , cwnd , wnd , seg == NULL, ack
sys_timeout:  msecs= h= arg=
ssw h=()
sys_timeout:  msecs= h= arg=
ssw h=()
tcp_slowtmr: processing active pcb
tcp_slowtmr: polling application
tcp_output: nothing to send ()
tcp_output: snd_wnd , cwnd , wnd , seg == NULL, ack
sys_timeout:  msecs= h= arg=
ssw h=()
sys_timeout:  msecs= h= arg=
ssw h=()


Why does it say "nothing to send ()" ?

Hampus

Sathya Thammanur wrote:
> Hello,
> Can you change your lwip setting for the parameter memp_num_sys_timeout 
> to be set to 3? This was an issue that got fixed in the latest release 
> of Xilinx EDK.
>
> Sathya
>
>
>
> On 6/21/06, *Hampus Thorell* <address@hidden 
> <mailto:address@hidden>> wrote:
>
>     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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