DHCP

[Claus, Ric]

Is it known that DHCP works with the 4.11 git HEAD (well, of at least a few months ago)?  When I tried it using a board that does DHCP just fine under 4.10.2, it failed and timed out.  I forget the exact error message, but something about failing to get a response to a broadcast to 255.255.255.255.  I am currently debugging an ethernet driver for a new board using this same 4.11 snapshot, and am seeing the m_data of the mbuf dequeued from the network stack start with data that should be located 28 bytes into the buffer.  In other words, the header and the first 14 bytes of payload are missing.  The dumps are below (mbuf in local (arm) endian order, and header and payload in network endian order).  I'm sure I've still got plenty of things wrong, but this doesn't make sense to me.

This driver is patterned after the lpc-ethernet driver in the ARM BSP shared area.  The application that ran to give these dumps is netdemo from the network-demos package from Joel's git area, configured to do BOOTP.

Thanks,
            Ric

mbuf:
0030AE80  00000000 00000000 002AC000 000001EC                                   
0030AE90  00000001 44530001 00000000 000001EC                                   
0030AEA0  002AC000 00000000 00000800 00000000                                   
0030AEB0  8918B9A9 CCE91178 2FB3DE86 D88C9F50                                   
0030AEC0  BB9FE227 0ADB9787 5A99FCE4 33CF57FC                                   
0030AED0  27F84B12 FFFFF09A FFFFFFFF 02350A00                                   
0030AEE0  0608997A 00080100 01000406 02350A00                                   
0030AEF0  15AC997A 00004F07 00000000 4F0715AC                                   

header:
002AC000  01010600 FFFFFF01 00068000 00000000

payload:
002AC00E  00000000 00000000 00000000 0000000A                                   
002AC01E  35027A99 00000000 00000000 00000000                                   
002AC02E  00000000 00000000 00000000 00000000                                   
002AC03E  00000000 00000000 00000000 00000000                                   
002AC04E  00000000 00000000 00000000 00000000                                   
002AC05E  00000000 00000000 00000000 00000000                                   
002AC06E  00000000 00000000 00000000 00000000                                   
002AC07E  00000000 00000000 00000000 00000000                                   
002AC08E  00000000 00000000 00000000 00000000                                   
002AC09E  00000000 00000000 00000000 00000000                                   
002AC0AE  00000000 00000000 00000000 00000000                                   
002AC0BE  00000000 00000000 00000000 00000000                                   
002AC0CE  00000000 00000000 00000000 00000000                                   
002AC0DE  00000000 00000000 00000000 00006382                                   
002AC0EE  5363FF00 00000000 00000000 00000000                                   
002AC0FE  00000000 00000000 00000000 00000000                                   
002AC10E  00000000 00000000 00000000 00000000                                   
002AC11E  00000000 00000000 00000000 00000000                                   
002AC12E  00000000 00000000 00000000 00000000                                   
002AC13E  00000000 00000000 00000000 00000000                                   
002AC14E  00000000 00000000 00000000 00000000                                   
002AC15E  00000000 00000000 00000000 00000000                                   
002AC16E  00000000 00000000 00000000 00000000                                   
002AC17E  00000000 00000000 00000000 00000000                                   
002AC18E  00000000 00000000 00000000 00000000                                   
002AC19E  00000000 00000000 00000000 00000000                                   
002AC1AE  00000000 00000000 00000000 00000000                                   
002AC1BE  00000000 00000000 00000000 00000000                                   
002AC1CE  00000000 00000000 00000000 00000000                                   
002AC1DE  00000000 00000000 00000000 000055DF                                   
002AC1EE  BFCAB2C2 A01E8D59 B7ED9996