[PATHv11 00/43] net/lwip: add lwip library for the network stack

[Maxim Uvarov]

On Thu, 30 Nov 2023 at 19:00, Fabio Estevam <festevam at gmail.com> wrote:

> Hi Maxim,
>
> On Thu, Nov 30, 2023 at 5:39 AM Maxim Uvarov <maxim.uvarov at linaro.org>
> wrote:
>
> > If networking for some reason doesn't work on that board (I tested only
> virtual board). Please try to compile with:
>
> Could you also try on a real board?
>
> Tom tested on a Raspberry Pi3 and it failed too:
>
> https://lore.kernel.org/u-boot/20231127185953.GW2513409@bill-the-cat/
>
> > CONFIG_LWIP_LIB_DEBUG=y
> > #CONFIG_LWIP_LIB_NOASSERT is not set
> >
> > It should make network activity more verbose. In many cases I saw issues
> that physically MAC address do not match to lwip initialized value,
> > and lwip drops such packets.
>
> The ping response with:
>
> CONFIG_LWIP_LIB_DEBUG=y
>  #CONFIG_LWIP_LIB_NOASSERT is not set
>
> u-boot=> ping 192.168.0.16
> init already done for eth1
> Using eth1 device
> pinging addr: 192.168.0.16
> ping: send 192.168.0.16
> ip4_output_if: 0IP header:
> +-------------------------------+
> | 4 | 5 |  0x00 |        60     | (v, hl, tos, len)
> +-------------------------------+
> |       40      |000|       0   | (id, flags, offset)
> +-------------------------------+
> |  255  |    1  |    0x3994     | (ttl, proto, chksum)
> +-------------------------------+
> |  192  |  168  |    0  |  164  | (src)
> +-------------------------------+
> |  192  |  168  |    0  |   16  | (dest)
> +-------------------------------+
> ip4_output_if: call netif->output()
> etharp_find_entry: found matching entry 0
> etharp_query: queued packet 00000000bdf03e70 on ARP entry 0
> ping_tmo: ping failed; host 192.168.0.16 is not alive
> u-boot=>
>

I will test that. smsc95xx_eth included in some CI tests and it worked. So
some differences on real hardware...
Log says that a ping packet was sent, but no packet on rx.
Might be the start function of  smsc95xx_eth called wrongly....

BR,
Maxim.