Date: Wed, 12 Jan 2011 20:44:11 +0000 (UTC) From: "George V. Neville-Neil" <gnn@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/net if_llatbl.c if_llatbl.h src/sys/netinet if_ether.c in.c src/tools/regression/netinet/arphold Makefile arphold.c arphold.t Message-ID: <201101122046.p0CKkFtX027478@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
gnn 2011-01-12 20:44:11 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
sys/net if_llatbl.c if_llatbl.h
sys/netinet if_ether.c in.c
Added files: (Branch: RELENG_8)
tools/regression/netinet/arphold Makefile arphold.c arphold.t
Log:
SVN rev 217329 on 2011-01-12 20:44:11Z by gnn
MFC: 215207
Add a queue to hold packets while we await an ARP reply.
When a fast machine first brings up some non TCP networking program
it is quite possible that we will drop packets due to the fact that
only one packet can be held per ARP entry. This leads to packets
being missed when a program starts or restarts if the ARP data is
not currently in the ARP cache.
This code adds a new sysctl, net.link.ether.inet.maxhold, which defines
a system wide maximum number of packets to be held in each ARP entry.
Up to maxhold packets are queued until an ARP reply is received or
the ARP times out. The default setting is the old value of 1
which has been part of the BSD networking code since time
immemorial.
Expose the time we hold an incomplete ARP entry by adding
the sysctl net.link.ether.inet.wait, which defaults to 20
seconds, the value used when the new ARP code was added..
Reviewed by: bz, rpaulo
Revision Changes Path
1.8.2.15 +20 -3 src/sys/net/if_llatbl.c
1.4.2.7 +2 -1 src/sys/net/if_llatbl.h
1.208.2.16 +55 -16 src/sys/netinet/if_ether.c
1.143.2.21 +7 -1 src/sys/netinet/in.c
1.1.2.2 +7 -0 src/tools/regression/netinet/arphold/Makefile (new)
1.1.2.2 +164 -0 src/tools/regression/netinet/arphold/arphold.c (new)
1.1.2.2 +7 -0 src/tools/regression/netinet/arphold/arphold.t (new)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201101122046.p0CKkFtX027478>