Date: Fri, 4 Nov 2011 16:50:57 +0000 From: Vlad Galu <dudu@dudu.ro> To: Archy Cho <archycho@gmail.com> Cc: freebsd-current@freebsd.org, rizzo@iet.unipi.it Subject: Re: Netmap for routers (em0 device) Message-ID: <89098B91-49DE-4316-81C6-12AAB1849B44@dudu.ro> In-Reply-To: <CA%2BYO1LE1995YDuy442jgEeX8ZV2bAf3zRBkVr=Rqw=8DgT=x5Q@mail.gmail.com> References: <CA%2BYO1LE1995YDuy442jgEeX8ZV2bAf3zRBkVr=Rqw=8DgT=x5Q@mail.gmail.com>
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On Nov 4, 2011, at 4:06 PM, Archy Cho wrote: > Hello >=20 > I am very happy to see freebsd could have such network performance = with > netmap , > since I am currently using freebsd as core routers instead of cisco. >=20 > I tried to re-compile the freebsd 8.2 kernel to test , > however , I could not complete the task ( both i386 and amd64 ), > I could only success at 9.0-RC-1. >=20 > Here is my task and error message, >=20 > cp /usr/src/sys/i386/conf/GENERIC /usr/src/sys/i386/conf/Netmap-Router > echo "device netmap" >> /usr/src/sys/i386/conf/Netmap-Router > cd /tmp/netmap/sys/ > cp -R * /usr/src/sys/ > cd /usr/src/ > patch -p < /tmp/netmap/head-netmap.diff > echo "WITHOUT_MODULES =3D bge re igb" >> /etc/make.conf > make buildkernel KERNCONF=3DNetmap-Router > make installkernel KERNCONF=3DNetmap-Router >=20 > -Werror ../../../dev/e1000/if_em.c -I../../../dev/e1000 > ../../../dev/e1000/if_em.c: In function 'em_setup_receive_ring': > ../../../dev/e1000/if_em.c:4012: error: 'j' undeclared (first use in = this > function) > ../../../dev/e1000/if_em.c:4012: error: (Each undeclared identifier is > reported only once > ../../../dev/e1000/if_em.c:4012: error: for each function it appears = in.) > *** Error code 1 >=20 > Stop in /usr/src/sys/i386/compile/Netmap-Router >=20 >=20 > Any hint of error message ? >=20 It's fairly easy to remove the offending code, AFAIK there were a few = unused variable and signed vs unsigned comparisons. > More questions , > I seldom facing DDOS , whatever using polling or not , > 1Gbps link with 64bytes packet will cause CPU 100% , > if a freebsd box compile with netmap , > could it have performance boost of routed / ipfw / pf ? Not yet. In order to do that, ipfw or pf need to be ported to userspace. = I believe that was on Luigi's agenda, though. -- Good, fast & cheap: pick any two.
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