Hello, I am testing a AES HW crypto driver I wrote. I test by setting up a tunnel between the board and a Linux server and pinging packets from the board to the server. With my driver loaded everything works fine with small packets but large packets (>1500) fail (100% packet loss). I added some debug code to the standard crypto/cbc.c and noticed that when I ping using -s1500 the encryption (aes-cbc) gets broken up to 3 chuncks sized 1456 , 16, 64. I also noticed that the iv for each of the chunks is different. Questions: 1. Why are there 3 chunks with these sizes? Is this related to the crypto subsystem or the ipsec one? 2. How is the iv computed between each subsequent chunk? I think my driver is failing because although it also processes 3 identically sized chunks it does not change the iv between each one (it only does so once at the end). Thanks for your time, Avital -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
