[Bug 193452] Dell PowerEdge 210 II -- Kernel panic bce (broadcom)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193452

Márcio Elias <marcioelias at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |marcioelias at gmail.com

--- Comment #2 from Márcio Elias <marcioelias at gmail.com> ---
Hi, we get the same problem with same hardware on a 10.3-RELEASE. We get this
in a Dell R210 II and a T210, both with the same driver loaded, and both
running IPNAT to translate a lot o private IP's to Public IP's (we are a ISP).

The strange is that this error not happens on the time of more load, is random,
can occur any time.

After change sysctl variables related to network tunning the crashes get less
frequent, but the max uptime that we can get is about 2 days.

Below is the Sysctl variables that we change.

net.bpf.optimize_writers=1
kern.random.sys.harvest.ethernet=0
kern.random.sys.harvest.point_to_point=0
kern.random.sys.harvest.interrupt=0
net.inet.raw.maxdgram=16384
net.inet.raw.recvspace=16384
net.route.netisr_maxqlen=2048
net.inet.ip.redirect=0
kern.ipc.shmmax=2147483648

And this on the /boot/loader.conf

net.link.ifqmaxlen=2048
net.isr.maxthreads=4
net.isr.defaultqlimit=2048

Also we enable LARGE_NAT on /usr/src/sys/contrib/ipfilter/netinet/ip_nat.h.

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