Eric Dumazet 520ac30f45 net_sched: drop packets after root qdisc lock is released ... Qdisc performance suffers when packets are dropped at enqueue() time because drops (kfree_skb()) are done while qdisc lock is held, delaying a dequeue() draining the queue. Nominal throughput can be reduced by 50 % when this happens, at a time we would like the dequeue() to proceed as fast as possible. Even FQ is vulnerable to this problem, while one of FQ goals was to provide some flow isolation. This patch adds a 'struct sk_buff **to_free' parameter to all qdisc->enqueue(), and in qdisc_drop() helper. I measured a performance increase of up to 12 %, but this patch is a prereq so that future batches in enqueue() can fly. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-06-25 12:19:35 -04:00
..
Makefile	net: add a hardware buffer management helper API	2016-03-14 12:19:46 -04:00
datagram.c	udp: enable MSG_PEEK at non-zero offset	2016-04-05 16:29:37 -04:00
dev.c	net_sched: drop packets after root qdisc lock is released	2016-06-25 12:19:35 -04:00
dev_addr_lists.c	net: fix spelling for synchronized	2014-11-18 15:26:32 -05:00
dev_ioctl.c	dev_ioctl: use sizeof(x) instead of sizeof x	2014-11-18 15:27:32 -05:00
devlink.c	devlink: implement shared buffer occupancy monitoring interface	2016-04-14 16:22:03 -04:00
drop_monitor.c	net: Replace get_cpu_var through this_cpu_ptr	2014-08-26 13:45:47 -04:00
dst.c	net: add dst_cache to ovs vxlan lwtunnel	2016-02-16 20:21:48 -05:00
dst_cache.c	net: dst_cache_per_cpu_dst_set() can be static	2016-03-18 17:45:08 -04:00
ethtool.c	sctp: Add GSO support	2016-06-03 19:37:21 -04:00
fib_rules.c	net: Add l3mdev rule	2016-06-08 11:36:02 -07:00
filter.c	bpf: reject wrong sized filters earlier	2016-06-10 18:00:57 -07:00
flow.c	flowcache: Avoid OOM condition under preasure	2016-03-17 10:28:42 +01:00
flow_dissector.c	net/flow_dissector: Make dissector_uses_key() and skb_flow_dissector_target() public	2016-03-10 16:24:02 -05:00
gen_estimator.c	net: sched: do not acquire qdisc spinlock in qdisc/class stats dump	2016-06-07 16:37:14 -07:00
gen_stats.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-06-10 11:52:24 -07:00
hwbm.c	net: hwbm: Fix unbalanced spinlock in error case	2016-05-25 12:35:09 -07:00
link_watch.c	dev: introduce dev_get_iflink()	2015-04-02 14:04:59 -04:00
lwtunnel.c	lwtunnel: autoload of lwt modules	2016-02-21 22:00:28 -05:00
neighbour.c	neigh: align nlattr properly when needed	2016-04-26 12:00:49 -04:00
net-procfs.c	net: remove NETDEV_TX_LOCKED support	2016-04-26 15:53:05 -04:00
net-sysfs.c	net-sysfs: fix missing <linux/of_net.h>	2016-06-08 00:37:58 -07:00
net-sysfs.h	net: netdev_kobject_init: annotate with __init	2014-01-05 20:27:54 -05:00
net-traces.c	net: IPv6 fib lookup tracepoint	2015-11-22 11:54:10 -05:00
net_namespace.c	netns: make nsid_lock per net	2015-05-17 23:41:11 -04:00
netclassid_cgroup.c	core: remove unneded headers for net cgroup controllers.	2016-02-17 15:31:27 -05:00
netevent.c	netevent: remove automatic variable in register_netevent_notifier()	2015-05-31 00:03:21 -07:00
netpoll.c	Revert "netpoll: Fix extra refcount release in netpoll_cleanup()"	2016-04-05 19:34:44 -04:00
netprio_cgroup.c	core: remove unneded headers for net cgroup controllers.	2016-02-17 15:31:27 -05:00
pktgen.c	sched: remove NET_XMIT_POLICED	2016-06-12 22:02:11 -04:00
ptp_classifier.c	ptp: Change ptp_class to a proper bitmask	2015-11-03 11:08:22 -05:00
request_sock.c	tcp: restore fastopen operations	2015-10-05 03:19:06 -07:00
rtnetlink.c	net_sched: add the ability to defer skb freeing	2016-06-15 14:08:34 -07:00
scm.c	unix: correctly track in-flight fds in sending process user_struct	2016-02-08 10:30:42 -05:00
secure_seq.c	net: remove a sparse error in secure_dccpv6_sequence_number()	2015-05-25 22:55:37 -04:00
skbuff.c	net: Add docbook description for 'mtu' arg to skb_gso_validate_mtu()	2016-06-03 22:56:28 -07:00
sock.c	net: add __sock_wfree() helper	2016-05-03 16:02:36 -04:00
sock_diag.c	sock_diag: align nlattr properly when needed	2016-04-26 12:00:48 -04:00
sock_reuseport.c	soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind	2016-01-19 14:44:23 -05:00
stream.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-12-03 21:09:12 -05:00
sysctl_net_core.c	bpf: add generic constant blinding for use in jits	2016-05-16 13:49:32 -04:00
timestamping.c	net: skb_defer_rx_timestamp should check for phydev before setting up classify	2015-07-09 14:17:15 -07:00
tso.c	net: tso: add support for IPv6	2015-10-26 22:24:22 -07:00
utils.c	net: move net_get_random_once to lib	2015-10-08 05:26:35 -07:00