git: tcp: Create seperate local port spaces for laddr/faddr/fpor
commit db26865d2a265124ff11f4f0b2cbceb752d0b024
Author: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Tue Apr 12 16:27:46 2011 +0800
tcp: Create seperate local port spaces for laddr/faddr/fport triple
TCP local ports could easily get depleted under stress due to
TIME_WAIT state. Since TIME_WAIT state is used to protect
laddr/lport/faddr/fport, we actually just need to make sure that
lport is not duplicated for each laddr/faddr/fport triple intead of
making sure that lport is not duplicated globally.
Add sysctl net.inet.tcp.lportext to enable seperate local port spaces
for laddr/faddr/fport triple; it is disabled by default.
Summary of changes:
sys/netinet/in_pcb.c | 187 ++++++++++++++++++++++++++++++++++++++++++++++
sys/netinet/in_pcb.h | 2 +
sys/netinet/tcp_usrreq.c | 49 +++++++++----
3 files changed, 224 insertions(+), 14 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/db26865d2a265124ff11f4f0b2cbceb752d0b024
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