Hi Tim, On 5/23/25 20:31, Tim Harvey wrote: > Hi Jerome, > > I've enabled LWIP on imx8mm_venice to see how it's doing and while > dhcp/dns/ping/wget appear to work great, tftp is broken. > > Enabling LWIP_DEBUG shows the following: > ip4_input: packet accepted on interface et > IP packet dropped since it was fragmented (0x2000) (while IP_REASSEMBLY == 0).
Hmmmmm IP_REASSEMBLY should probably default to 1. > > I tried enabling IP_REASSEMBLY in lwip but that seems to change the issue to: > ip4_input: packet accepted on interface et > ip4_input: > IP header: > +-------------------------------+ > | 4 | 5 | 0xc0 | 108 | (v, hl, tos, len) > +-------------------------------+ > | 10568 |000| 0 | (id, flags, offset) > +-------------------------------+ > | 64 | 1 | 0xe25b | (ttl, proto, chksum) > +-------------------------------+ > | 172 | 24 | 0 | 2 | (src) > +-------------------------------+ > | 172 | 24 | 21 | 251 | (dest) > +-------------------------------+ > ip4_input: p->len 108 p->tot_len 108 > Unsupported transport protocol 1 > > Any ideas what the issue is here? Not really :-/ Does the transfer work with a smaller block size? (CONFIG_TFTP_BLOCKSIZE, default 1468, try 500 for instance). You could also enable CONFIG_LWIP_DEBUG_RXTX in order to get a full hex dump of the messages going into/out of the lwIP stack. Regards, -- Jerome > > Best Regards, > > Tim
