Has anyone done any work using Ethernet jumbo frames with the Starterware lwip on the EVM335x board? Is it possible? I can get the normal Ethernet frames working OK. Thanks.
StarterWare currently implemented and tested just to support normal frames. But you can try jumbo frames by modifyin MTU definition in sitaraif.c and TCP_MSS in lwipopts.h file. Also, I think you also have to write RX_MAXLEN register in the sliver with the length of jumbo frame(including header length). Also, please take care of the pbuf length to be allocated to support jumbo frames. But we have not tried the same experiment.
Is it possible for you to let me know in which source file RX_MAXLEN resides and possibley indicate where the pbuf length needs to be changed?
I suggest you to wait for the next release of StarterWare which will happen by the end of July. This release will have some major changes in CPSW port implementation for lwIP and will have cache support etc. It would be more stable also. I feel its better you start experimenting on the next release.
Thanks. I can wait until the end of July OK.
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