On Thu, Oct 28, 2010 at 15:02:41 +0300, Yuriy Kohut wrote:
> Hi,
>
> Does somebody know haw to deal with the following massages in the console:
>
> xennet_get_responses: too many frags 6 > max 5
What are you using for your Domain 0?
I haven't run into that before, so it would be nice to have a setup that
would trigger this problem.
It looks like there is a limit on the number of segments for LRO. I think
the limit is arbitrary, but I need to look at it a bit more.
Try the attached patch and let me know whether it works for you. It
disables the limit on the number of receive segments.
Thanks,
Ken
--
Kenneth Merry
k...@freebsd.org
==== //depot/SpectraBSD/stable/8/sys/dev/xen/netfront/netfront.c#2 -
/usr/home/kenm/perforce4/SpectraBSD/stable/8/sys/dev/xen/netfront/netfront.c
====
*** /tmp/tmp.3226.94 Wed Nov 3 16:09:10 2010
---
/usr/home/kenm/perforce4/SpectraBSD/stable/8/sys/dev/xen/netfront/netfront.c
Wed Nov 3 16:08:35 2010
***************
*** 1272,1278 ****
--- 1272,1280 ----
struct mbuf *m, *m0, *m_prev;
grant_ref_t ref = xennet_get_rx_ref(np, *cons);
RING_IDX ref_cons = *cons;
+ #if 0
int max = 5 /* MAX_TX_REQ_FRAGS + (rx->status <= RX_COPY_THRESHOLD) */;
+ #endif
int frags = 1;
int err = 0;
u_long ret;
***************
*** 1416,1421 ****
--- 1418,1424 ----
}
*list = m0;
+ #if 0
if (unlikely(frags > max)) {
if (net_ratelimit())
WPRINTK("Too many frags\n");
***************
*** 1423,1428 ****
--- 1426,1432 ----
max);
err = E2BIG;
}
+ #endif
*cons += frags;
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