When calling mbuf_outbound_finalize() to compute the incomplete
TCP/UDP checksums on the mbuf from my iff_output_func (interface
filter output function), I kept getting messages from the kernel
"cksum: out of data".
Looking at the xnu-792.13.8 source, it looks like the underlying
in_cksum_skip, called from in_delayed_cksum_offset, expects the ip_len
field in the IP header to be in host-byte-order, while in reality the
mbuf handed to my iff_output_func had the ip_len field in the IP
header correctly populated in network-byte-order.
What is my iff_output_func to do in such a situation?
Thanks!
--
Bhavesh P. Davda
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-kernel mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/darwin-kernel/email@hidden
