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9c4c325252
linux/net
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Flavio Leitner 9c4c325252 skbuff: preserve sock reference when scrubbing the skb. 
The sock reference is lost when scrubbing the packet and that breaks
TSQ (TCP Small Queues) and XPS (Transmit Packet Steering) causing
performance impacts of about 50% in a single TCP stream when crossing
network namespaces.

XPS breaks because the queue mapping stored in the socket is not
available, so another random queue might be selected when the stack
needs to transmit something like a TCP ACK, or TCP Retransmissions.
That causes packet re-ordering and/or performance issues.

TSQ breaks because it orphans the packet while it is still in the
host, so packets are queued contributing to the buffer bloat problem.

Preserving the sock reference fixes both issues. The socket is
orphaned anyways in the receiving path before any relevant action
and on TX side the netfilter checks if the reference is local before
use it.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-28 22:21:32 +09:00
..
6lowpan
9p treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
802
8021q net: Convert GRO SKB handling to list_head. 2018-06-26 11:33:04 +09:00
appletalk Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
atm atm: Preserve value of skb->truesize when accounting to vcc 2018-06-17 08:27:01 +09:00
ax25 Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
batman-adv net: drivers/net: Convert random_ether_addr to eth_random_addr 2018-06-23 10:49:14 +09:00
bluetooth treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
bpf bpf: making bpf_prog_test run aware of possible data_end ptr change 2018-04-18 23:34:16 +02:00
bpfilter bpfilter: fix user mode helper cross compilation 2018-06-21 09:19:19 +09:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
caif net/caif: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
can treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ceph The main piece is a set of libceph changes that revamps how OSD 2018-06-15 07:24:58 +09:00
core skbuff: preserve sock reference when scrubbing the skb. 2018-06-28 22:21:32 +09:00
dcb treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dccp net: dccp: switch rx_tstamp_last_feedback to monotonic clock 2018-06-23 10:46:44 +09:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
dns_resolver KEYS: DNS: limit the length of option strings 2018-04-17 15:17:41 -04:00
dsa net: sched: pass extack pointer to block binds and cb registration 2018-06-26 23:21:32 +09:00
ethernet net: Convert GRO SKB handling to list_head. 2018-06-26 11:33:04 +09:00
hsr
ieee802154 treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ife net: sched: ife: check on metadata length 2018-04-22 21:12:00 -04:00
ipv4 netfilter: check if the socket netns is correct. 2018-06-28 22:21:32 +09:00
ipv6 netfilter: check if the socket netns is correct. 2018-06-28 22:21:32 +09:00
iucv net/iucv: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
kcm Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
key Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
l2tp l2tp: define helper for parsing struct sockaddr_pppol2tp* 2018-06-28 16:06:50 +09:00
l3mdev
lapb
llc Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
mac802154 net/mac802154: disambiguate mac80215 vs mac802154 trace events 2018-03-28 22:55:18 +02:00
mpls net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ncsi net/ncsi: Use netdev_dbg for debug messages 2018-06-20 07:26:58 +09:00
netfilter netfilter: check if the socket netns is correct. 2018-06-28 22:21:32 +09:00
netlabel audit: use inline function to get audit context 2018-05-14 17:24:18 -04:00
netlink treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
netrom treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
nsh nsh: fix infinite loop 2018-05-04 12:54:38 -04:00
openvswitch treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
packet net/packet: fix use-after-free 2018-06-22 07:17:42 +09:00
phonet Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
psample
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
rfkill rfkill: Create rfkill-none LED trigger 2018-05-23 11:26:45 +02:00
rose treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rxrpc treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
sched net sched actions: avoid bitwise operation on signed value in pedit 2018-06-28 22:12:03 +09:00
sctp rhashtable: split rhashtable.h 2018-06-22 13:43:27 +09:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
strparser strparser: Don't schedule in workqueue in paused state 2018-06-21 09:54:05 +09:00
sunrpc NFS client bugfixes for Linux 4.18 2018-06-22 06:21:34 +09:00
switchdev
tipc treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
tls net/tls: Remove VLA usage on nonce 2018-06-27 10:39:52 +09:00
unix Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
vmw_vsock VSOCK: fix loopback on big-endian systems 2018-06-22 09:34:08 +09:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
x25 Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
xdp xsk: re-add queue id check for XDP_SKB path 2018-06-12 12:19:04 +02:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-04-27 19:46:06 -04:00
Kconfig net: Introduce generic failover module 2018-05-28 22:59:54 -04:00
Makefile bpfilter: switch to CC from HOSTCC 2018-06-05 10:21:18 -04:00
socket.c socket: close race condition between sock_close() and sockfs_setattr() 2018-06-10 12:25:53 -07:00
sysctl_net.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00