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linux-stable/net/atm
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Eric Dumazet 8b5c171bb3 neigh: new unresolved queue limits 
Le mercredi 09 novembre 2011 à 16:21 -0500, David Miller a écrit :
> From: David Miller <davem@davemloft.net>
> Date: Wed, 09 Nov 2011 16:16:44 -0500 (EST)
>
> > From: Eric Dumazet <eric.dumazet@gmail.com>
> > Date: Wed, 09 Nov 2011 12:14:09 +0100
> >
> >> unres_qlen is the number of frames we are able to queue per unresolved
> >> neighbour. Its default value (3) was never changed and is responsible
> >> for strange drops, especially if IP fragments are used, or multiple
> >> sessions start in parallel. Even a single tcp flow can hit this limit.
> >  ...
> >
> > Ok, I've applied this, let's see what happens :-)
>
> Early answer, build fails.
>
> Please test build this patch with DECNET enabled and resubmit.  The
> decnet neigh layer still refers to the removed ->queue_len member.
>
> Thanks.

Ouch, this was fixed on one machine yesterday, but not the other one I
used this morning, sorry.

[PATCH V5 net-next] neigh: new unresolved queue limits

unres_qlen is the number of frames we are able to queue per unresolved
neighbour. Its default value (3) was never changed and is responsible
for strange drops, especially if IP fragments are used, or multiple
sessions start in parallel. Even a single tcp flow can hit this limit.

$ arp -d 192.168.20.108 ; ping -c 2 -s 8000 192.168.20.108
PING 192.168.20.108 (192.168.20.108) 8000(8028) bytes of data.
8008 bytes from 192.168.20.108: icmp_seq=2 ttl=64 time=0.322 ms

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-14 00:47:54 -05:00
..
addr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
addr.h atm: use const where reasonable 2008-06-17 16:20:06 -07:00
atm_misc.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
atm_sysfs.c atm: expose ATM device index in sysfs 2011-05-27 13:07:21 -04:00
br2684.c atm: br2684: Fix oops due to skb->dev being NULL 2011-08-20 14:13:05 -07:00
clip.c neigh: new unresolved queue limits 2011-11-14 00:47:54 -05:00
common.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
common.h net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
ioctl.c net/atm/ioctl.c: checkpatch cleanups 2010-01-26 21:15:59 -08:00
Kconfig [ATM]: atm is no longer experimental 2008-01-28 15:00:11 -08:00
lec.c net: remove use of ndo_set_multicast_list in drivers 2011-08-17 20:22:03 -07:00
lec.h Fix common misspellings 2011-03-31 11:26:23 -03:00
lec_arpc.h
Makefile
mpc.c net: Remove casts of void * 2011-06-16 23:19:27 -04:00
mpc.h atm: convert mpc device to using netdev_ops 2009-03-21 19:19:12 -07:00
mpoa_caches.c net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00
mpoa_caches.h
mpoa_proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pppoatm.c net: remove interrupt.h inclusion from netdevice.h 2011-06-06 22:55:11 -07:00
proc.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
protocols.h
pvc.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
raw.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
resources.c atm: correct sysfs 'device' link creation and parent relationships 2010-12-10 15:45:05 -08:00
resources.h atm: correct sysfs 'device' link creation and parent relationships 2010-12-10 15:45:05 -08:00
signaling.c net: sk_sleep() helper 2010-04-20 16:37:13 -07:00
signaling.h
svc.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00