Florian Westphal 31770e34e4 tcp: Revert "tcp: remove header prediction" ...

This reverts commit 45f119bf93.

Eric Dumazet says:
  We found at Google a significant regression caused by
  45f119bf93 tcp: remove header prediction

  In typical RPC  (TCP_RR), when a TCP socket receives data, we now call
  tcp_ack() while we used to not call it.

  This touches enough cache lines to cause a slowdown.

so problem does not seem to be HP removal itself but the tcp_ack()
call.  Therefore, it might be possible to remove HP after all, provided
one finds a way to elide tcp_ack for most cases.

Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-08-30 11:20:09 -07:00

..

6lowpan

6lowpan: Don't set IFF_NO_QUEUE

2017-04-12 22:02:40 +02:00

9p

Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-15 12:00:42 -07:00

802

net: introduce __skb_put_[zero, data, u8]

2017-06-20 13:30:14 -04:00

8021q

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

appletalk

networking: make skb_push & __skb_push return void pointers

2017-06-16 11:48:40 -04:00

atm

net: atm: make atmdev_ops const

2017-08-09 22:43:50 -07:00

ax25

net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t

2017-07-04 22:35:19 +01:00

batman-adv

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-09 16:28:45 -07:00

bluetooth

Bluetooth: kfree tmp rather than an alias to it

2017-08-11 21:19:46 +02:00

bpf

bpf: Align packet data properly in program testing framework.

2017-05-02 11:46:28 -04:00

bridge

bridge: fdb add and delete tracepoints

2017-08-29 14:49:45 -07:00

caif

net: convert sock.sk_wmem_alloc from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

can

rtnetlink: make rtnl_register accept a flags parameter

2017-08-09 16:57:38 -07:00

ceph

libceph: make RECOVERY_DELETES feature create a new interval

2017-08-01 16:46:45 +02:00

core

neigh: increase queue_len_bytes to match wmem_default

2017-08-29 16:10:50 -07:00

dcb

rtnetlink: make rtnl_register accept a flags parameter

2017-08-09 16:57:38 -07:00

dccp

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-21 17:06:42 -07:00

decnet

neigh: increase queue_len_bytes to match wmem_default

2017-08-29 16:10:50 -07:00

dns_resolver

Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-03-03 10:16:38 -08:00

dsa

dsa: remove unused net_device arg from handlers

2017-08-21 10:39:11 -07:00

ethernet

networking: make skb_push & __skb_push return void pointers

2017-06-16 11:48:40 -04:00

hsr

net: add netlink_ext_ack argument to rtnl_link_ops.newlink

2017-06-26 23:13:21 -04:00

ieee802154

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

ife

net: Introduce ife encapsulation module

2017-02-03 15:16:45 -05:00

ipv4

tcp: Revert "tcp: remove header prediction"

2017-08-30 11:20:09 -07:00

ipv6

neigh: increase queue_len_bytes to match wmem_default

2017-08-29 16:10:50 -07:00

ipx

net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t

2017-07-04 22:35:17 +01:00

iucv

iucv: Convert sk_wmem_alloc accesses to refcount_t.

2017-07-03 02:31:22 -07:00

kcm

strparser: initialize all callbacks

2017-08-24 21:57:50 -07:00

key

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-15 20:23:23 -07:00

l2tp

Revert "l2tp: constify inet6_protocol structures"

2017-08-01 10:03:17 -07:00

l3mdev

…

lapb

net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t

2017-07-04 22:35:16 +01:00

llc

net, llc: convert llc_sap.refcnt from atomic_t to refcount_t

2017-07-04 22:35:15 +01:00

mac80211

mac80211: add api to start ba session timer expired flow

2017-08-09 09:49:42 +03:00

mac802154

net: Fix inconsistent teardown and release of private netdev state.

2017-06-07 15:53:24 -04:00

mpls

rtnetlink: make rtnl_register accept a flags parameter

2017-08-09 16:57:38 -07:00

ncsi

net/ncsi: Configure VLAN tag filter

2017-08-28 16:49:49 -07:00

netfilter

net: ipv6: add second dif to inet6 socket lookups

2017-08-07 11:39:22 -07:00

netlabel

netlink: pass extended ACK struct to parsing functions

2017-04-13 13:58:22 -04:00

netlink

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

netrom

net, netrom: convert nr_node.refcount from atomic_t to refcount_t

2017-07-04 22:35:17 +01:00

nfc

NFC: Add sockaddr length checks before accessing sa_family in bind handlers

2017-06-23 00:38:31 +02:00

nsh

nsh: add GSO support

2017-08-29 15:16:52 -07:00

openvswitch

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-21 17:06:42 -07:00

packet

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-10 12:11:16 -07:00

phonet

rtnetlink: make rtnl_register accept a flags parameter

2017-08-09 16:57:38 -07:00

psample

networking: make skb_put & friends return void pointers

2017-06-16 11:48:39 -04:00

qrtr

rtnetlink: make rtnl_register accept a flags parameter

2017-08-09 16:57:38 -07:00

rds

RDS: make rhashtable_params const

2017-08-28 11:30:02 -07:00

rfkill

net: rfkill: gpio: Switch to devm_acpi_dev_add_driver_gpios()

2017-06-13 11:07:51 +02:00

rose

net: Work around lockdep limitation in sockets that use sockets

2017-03-09 18:23:27 -08:00

rxrpc

rxrpc: Allow failed client calls to be retried

2017-08-29 10:55:20 +01:00

sched

act_ife: use registered ife_type as fallback

2017-08-29 15:14:18 -07:00

sctp

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-21 17:06:42 -07:00

smc

net/smc: synchronize buffer usage with device

2017-07-29 11:22:58 -07:00

strparser

strparser: initialize all callbacks

2017-08-24 21:57:50 -07:00

sunrpc

Merge tag 'nfs-for-4.13-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

2017-07-21 16:26:01 -07:00

switchdev

net: switchdev: Remove bridge bypass support from switchdev

2017-08-07 14:48:48 -07:00

tipc

net: tipc: constify genl_ops

2017-08-23 22:31:38 -07:00

tls

TLS: Fix length check in do_tls_getsockopt_tx()

2017-07-06 10:58:19 +01:00

unix

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-08-21 17:06:42 -07:00

vmw_vsock

hv_sock: implements Hyper-V transport for Virtual Sockets (AF_VSOCK)

2017-08-28 15:38:18 -07:00

wimax

genetlink: mark families as __ro_after_init

2016-10-27 16:16:09 -04:00

wireless

Merge tag 'mac80211-for-davem-2017-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

2017-07-07 11:35:55 +01:00

x25

X25: constify null_x25_address

2017-08-03 09:13:51 -07:00

xfrm

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-08-21 09:29:47 -07:00

compat.c

get_compat_bpf_fprog(): don't copyin field-by-field

2017-07-04 13:14:34 -04:00

Kconfig

nsh: add GSO support

2017-08-29 15:16:52 -07:00

Makefile

nsh: add GSO support

2017-08-29 15:16:52 -07:00

socket.c

net: fixes for skb_send_sock

2017-08-16 11:27:52 -07:00

sysctl_net.c

sysctl: Remove dead register_sysctl_root

2017-04-16 23:42:49 -05:00