K 10
svn:author
V 6
tuexen
K 8
svn:date
V 27
2019-09-19T10:27:47.633843Z
K 7
svn:log
V 441
When the RACK stack computes the space for user data in a TCP segment,
it wasn't taking the IP level options into account. This patch fixes this.
In addition, it also corrects a KASSERT and adds protection code to assure
that the IP header chain and the TCP head fit in the first fragment as
required by RFC 7112.

Reviewed by:		rrs@
MFC after:		3 days
Sponsored by:		Nertflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D21666

END