K 10
svn:author
V 6
tuexen
K 8
svn:date
V 27
2019-09-13T08:14:46.238801Z
K 7
svn:log
V 283
MFC r352072:

Only update SACK/DSACK lists when a non-empty segment was received.
This fixes hitting a KASSERT with a valid packet exchange.

PR:			240471
Reviewed by:		rrs@, Richard Scheffenegger
Sponsored by:		Neflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D21567

END