Eric Dumazet 44b8288308 net_sched: pfifo_head_drop problem ... commit 57dbb2d83d (sched: add head drop fifo queue) introduced pfifo_head_drop, and broke the invariant that sch->bstats.bytes and sch->bstats.packets are COUNTER (increasing counters only) This can break estimators because est_timer() handles unsigned deltas only. A decreasing counter can then give a huge unsigned delta. My mid term suggestion would be to change things so that sch->bstats.bytes and sch->bstats.packets are incremented in dequeue() only, not at enqueue() time. We also could add drop_bytes/drop_packets and provide estimations of drop rates. It would be more sensible anyway for very low speeds, and big bursts. Right now, if we drop packets, they still are accounted in byte/packets abolute counters and rate estimators. Before this mid term change, this patch makes pfifo_head_drop behavior similar to other qdiscs in case of drops : Dont decrement sch->bstats.bytes and sch->bstats.packets Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-01-05 13:39:17 -08:00
..
9p	net/9p/protocol.c: Remove duplicated macros.	2010-12-08 09:56:28 -08:00
802	net/802: add __rcu annotations	2010-10-25 13:09:44 -07:00
8021q	8021q: vlan device is lockless do not transfer real_num_{tx|rx}_queues	2010-11-28 10:47:19 -08:00
appletalk
atm	net: kill unused macros	2010-12-19 21:59:35 -08:00
ax25	net: ax25: fix information leak to userland	2010-11-10 10:14:33 -08:00
batman-adv	batman-adv: Return hna count on local buffer fill	2010-12-20 10:32:03 -08:00
bluetooth	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
bridge	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
caif	Net: caif: Makefile: Remove deprecated items	2010-11-22 08:16:09 -08:00
can	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
ceph	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
core	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
dcb	dcbnl: more informed return values for new dcbnl routines	2011-01-03 12:12:11 -08:00
dccp	dccp: remove unused macros	2010-12-10 12:49:23 +01:00
decnet	net: Abstract default MTU metric calculation behind an accessor.	2010-12-14 13:01:14 -08:00
dns_resolver	Net: dns_resolver: Makefile: Remove deprecated kbuild goal definitions	2010-11-22 08:16:10 -08:00
dsa
econet	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
ethernet	net: return operator cleanup	2010-09-23 14:33:39 -07:00
ieee802154	net: RCU conversion of dev_getbyhwaddr() and arp_ioctl()	2010-12-08 10:07:24 -08:00
ipv4	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
ipv6	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-20 13:24:14 -08:00
ipx	BKL: introduce CONFIG_BKL.	2010-10-21 15:44:13 +02:00
irda	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
iucv	[S390] cleanup lowcore access from external interrupts	2010-10-25 16:10:19 +02:00
key	net: return operator cleanup	2010-09-23 14:33:39 -07:00
l2tp	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-08 13:47:38 -08:00
lapb	Net: lapb: Makefile: Remove deprecated kbuild goal definitions	2010-11-22 08:16:14 -08:00
llc	net: RCU conversion of dev_getbyhwaddr() and arp_ioctl()	2010-12-08 10:07:24 -08:00
mac80211	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
netfilter	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-11-19 13:13:47 -08:00
netlabel	net: kill unused macros	2010-12-19 21:59:35 -08:00
netlink	netlink: fix netlink_change_ngroups()	2010-10-24 16:25:39 -07:00
netrom
packet	net: Use skb_checksum_start_offset()	2010-12-16 14:43:14 -08:00
phonet	Net: phonet: Makefile: Remove deprecated kbuild goal definitions	2010-11-22 08:16:14 -08:00
rds	Net: rds: Makefile: Remove deprecated items	2010-11-22 08:16:15 -08:00
rfkill	rfkill: remove dead code	2010-11-15 13:24:06 -05:00
rose	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-09-27 01:03:03 -07:00
rxrpc	Net: rxrpc: Makefile: Remove deprecated kbuild goal definitions	2010-11-22 08:16:15 -08:00
sched	net_sched: pfifo_head_drop problem	2011-01-05 13:39:17 -08:00
sctp	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
sunrpc	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
tipc	tipc: update log.h re-include protection to reflect new name	2011-01-01 14:56:18 -08:00
unix	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-08 13:47:38 -08:00
wanrouter	Net: wanrouter: Makefile: Remove deprecated kbuild goal definitions	2010-11-22 08:16:16 -08:00
wimax
wireless	nl80211: Export available antennas	2010-12-20 14:49:47 -05:00
x25	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-08 13:47:38 -08:00
xfrm	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
compat.c	net: Limit socket I/O iovec total length to INT_MAX.	2010-10-28 11:47:52 -07:00
Kconfig	net: Add batman-adv meshing protocol	2010-12-16 13:44:24 -08:00
Makefile	net: Add batman-adv meshing protocol	2010-12-16 13:44:24 -08:00
nonet.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
socket.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
sysctl_net.c
TUNABLE