|
hi,
I thank you for
your patient and clear explanation. That instill me with correct concept
and give me right direction instantly.
I employed the lwip0.7.2 version, so
I could build the minimal project and ran successful.
And thank for people who maintenance
this project.
Jim Gibbons wrote:
I was hoping that you would get a more expert
opinion than mine, but I haven't seen any, so I guess mine will have to
serve.
It looks to me as though your model for the use of lwIP relates to an older version of lwIP. etharp_ip_input used to return NULL always. etharp_arp_input used to return a pbuf if it needed to have an arp output packet transmitted. In 1.1.0, someone modified etharp, so that it would return void from etharp_ip_input and etharp_arp_input. etharp_ip_input probably should have been that way all along. etharp_arp_input was perfectly capable of calling the output function itself, since it had a netif. It all makes more sense the way it is now, but it does make some old code implementations obsolete |
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