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eb70db8756
linux/net
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David S. Miller eb70db8756 packet: Use symmetric hash for PACKET_FANOUT_HASH. 
People who use PACKET_FANOUT_HASH want a symmetric hash, meaning that
they want packets going in both directions on a flow to hash to the
same bucket.

The core kernel SKB hash became non-symmetric when the ipv6 flow label
and other entities were incorporated into the standard flow hash order
to increase entropy.

But there are no users of PACKET_FANOUT_HASH who want an assymetric
hash, they all want a symmetric one.

Therefore, use the flow dissector to compute a flat symmetric hash
over only the protocol, addresses and ports.  This hash does not get
installed into and override the normal skb hash, so this change has
no effect whatsoever on the rest of the stack.

Reported-by: Eric Leblond <eric@regit.org>
Tested-by: Eric Leblond <eric@regit.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-01 16:07:50 -04:00
..
6lowpan 6lowpan: move mac802154 header 2016-04-13 10:41:10 +02:00
9p remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
802
8021q vlan: Propagate MAC address to VLANs 2016-05-31 11:56:48 -07:00
appletalk appletalk: fix erroneous return value 2016-02-18 14:59:34 -05:00
atm net/atm: sk_err_soft must be positive 2016-05-23 13:51:10 -07:00
ax25 AX.25: Close socket connection on session completion 2016-06-18 20:55:34 -07:00
batman-adv batman-adv: Clean up untagged vlan when destroying via rtnl-link 2016-06-29 04:01:48 -04:00
bluetooth Bluetooth: fix power_on vs close race 2016-05-13 16:50:23 +02:00
bridge ipv4: Fix ip_skb_dst_mtu to use the sk passed by ip_finish_output 2016-06-30 09:02:48 -04:00
caif net: caif: fix misleading indentation 2016-03-14 13:09:50 -04:00
can sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
ceph libceph: use %s instead of %pE in dout()s 2016-05-30 23:00:23 +02:00
core packet: Use symmetric hash for PACKET_FANOUT_HASH. 2016-07-01 16:07:50 -04:00
dcb
dccp dccp: do not assume DCCP code is non preemptible 2016-05-02 17:02:25 -04:00
decnet decnet: Do not build routes to devices without decnet private data. 2016-04-10 23:01:30 -04:00
dns_resolver KEYS: Add a facility to restrict new links into a keyring 2016-04-11 22:37:37 +01:00
dsa dsa: Rename switch chip data to cd 2016-05-11 19:36:28 -04:00
ethernet eth: Pull header from first fragment via eth_get_headlen 2016-02-24 13:58:05 -05:00
hsr net/hsr: Use setup_timer and mod_timer. 2016-05-16 14:00:43 -04:00
ieee802154 ieee802154: fix logic error in ieee802154_llsec_parse_dev_addr 2016-05-29 22:36:25 -07:00
ipv4 ipv4: Fix ip_skb_dst_mtu to use the sk passed by ip_finish_output 2016-06-30 09:02:48 -04:00
ipv6 ipmr/ip6mr: Initialize the last assert time of mfc entries. 2016-06-28 04:14:09 -04:00
ipx
irda TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
iucv
kcm kcm: fix /proc memory leak 2016-06-22 16:32:23 -04:00
key
l2tp l2tp: fix configuration passed to setup_udp_tunnel_sock() 2016-06-08 11:11:53 -07:00
l3mdev net: l3mdev: Allow send on enslaved interface 2016-05-09 22:33:52 -04:00
lapb net/lapb: tuse %*ph to dump buffers 2016-05-29 22:33:25 -07:00
llc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
mac80211 mac80211: Fix mesh estab_plinks counting in STA removal case 2016-06-28 12:39:50 +02:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
mpls gso: Remove arbitrary checks for unsupported GSO 2016-05-20 18:03:15 -04:00
netfilter netfilter: nf_tables: fix a wrong check to skip the inactive rules 2016-06-15 12:17:24 +02:00
netlabel netlabel: fix a problem with netlbl_secattr_catmap_setrng() 2016-04-05 16:10:47 -04:00
netlink netlink: Fix dump skb leak/double free 2016-05-16 22:05:15 -04:00
netrom
nfc nfc: nci: Add nci_nfcc_loopback to the nci core 2016-05-04 01:48:16 +02:00
openvswitch openvswitch: fix conntrack netlink event delivery 2016-06-29 08:13:59 -04:00
packet packet: Use symmetric hash for PACKET_FANOUT_HASH. 2016-07-01 16:07:50 -04:00
phonet
qrtr Merge tag 'qcom-soc-for-4.7-2' into net-next 2016-05-17 14:11:19 -04:00
rds net: rds: fix coding style issues 2016-06-18 21:34:09 -07:00
rfkill rfkill: Use switch to demux userspace operations 2016-04-05 10:48:53 +02:00
rose
rxrpc rxrpc: fix ptr_ret.cocci warnings 2016-06-07 15:30:21 -07:00
sched netem: fix a use after free 2016-06-23 15:07:44 -04:00
sctp net: diag: add missing declarations 2016-06-10 23:22:55 -07:00
sunrpc rpc: share one xps between all backchannels 2016-06-15 10:32:25 -04:00
switchdev switchdev: pass pointer to fib_info instead of copy 2016-05-17 13:58:49 -04:00
tipc tipc: unclone unbundled buffers before forwarding 2016-06-22 16:33:35 -04:00
unix Merge branch 'overlayfs-af_unix-fix' into overlayfs-linus 2016-06-12 12:05:21 +02:00
vmw_vsock vsock: make listener child lock ordering explicit 2016-06-27 10:44:46 -04:00
wimax
wireless cfg80211: fix proto in ieee80211_data_to_8023 for frames without LLC header 2016-06-29 11:50:33 +02:00
x25 net: fix a kernel infoleak in x25 module 2016-05-09 22:45:33 -04:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-05-09 15:59:24 -04:00
compat.c packet: compat support for sock_fprog 2016-06-09 23:41:03 -07:00
Kconfig bpf: add generic constant blinding for use in jits 2016-05-16 13:49:32 -04:00
Makefile net: Add Qualcomm IPC router 2016-05-08 23:46:14 -04:00
socket.c fs: poll/select/recvmmsg: use timespec64 for timeout events 2016-05-19 19:12:14 -07:00
sysctl_net.c