git: DragonFly_RELEASE_4_2 kernel - MFC 160de052b2 from FreeBSD (persist timer)

[Sepherosa Ziehau]

commit 519f02d87c329716383420ca220da6373a99f74b
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Thu Jul 16 20:30:12 2015 -0700

    kernel - MFC 160de052b2 from FreeBSD (persist timer)
    
    Avoid a situation where we do not set persist timer after a zero window
    condition.  If you send a 0-length packet, but there is data is the socket
    buffer, and neither the rexmt or persist timer is already set, then
    activate the persist timer.
    
    Author: hiren <hiren at FreeBSD.org>
    Taken-from: FreeBSD

Summary of changes:
 sys/netinet/tcp_output.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/519f02d87c329716383420ca220da6373a99f74b


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