linux-toradex.git/include/net/ip6_tunnel.h, branch v3.14.57

net: unify the pcpu_tstats and br_cpu_netstats as one

2014-01-05T01:10:24+00:00

They are same, so unify them as one, pcpu_sw_netstats.

Define pcpu_sw_netstat in netdevice.h, remove pcpu_tstats
from if_tunnel and remove br_cpu_netstats from br_private.h

Cc: Cong Wang 
Cc: Stephen Hemminger 
Signed-off-by: Li RongQing 
Signed-off-by: David S. Miller

tunnels: harmonize cleanup done on skb on xmit path

2013-09-04T04:27:25+00:00

The goal of this patch is to harmonize cleanup done on a skbuff on xmit path.
Before this patch, behaviors were different depending of the tunnel type.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

ip6tnl: add x-netns support

2013-08-15T08:00:20+00:00

This patch allows to switch the netns when packet is encapsulated or
decapsulated. In other word, the encapsulated packet is received in a netns,
where the lookup is done to find the tunnel. Once the tunnel is found, the
packet is decapsulated and injecting into the corresponding interface which
stands to another netns.

When one of the two netns is removed, the tunnel is destroyed.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

GRE: Refactor GRE tunneling code.

2013-03-26T16:27:18+00:00

Following patch refactors GRE code into ip tunneling code and GRE
specific code. Common tunneling code is moved to ip_tunnel module.
ip_tunnel module is written as generic library which can be used
by different tunneling implementations.

ip_tunnel module contains following components:
 - packet xmit and rcv generic code. xmit flow looks like
   (gre_xmit/ipip_xmit)->ip_tunnel_xmit->ip_local_out.
 - hash table of all devices.
 - lookup for tunnel devices.
 - control plane operations like device create, destroy, ioctl, netlink
   operations code.
 - registration for tunneling modules, like gre, ipip etc.
 - define single pcpu_tstats dev->tstats.
 - struct tnl_ptk_info added to pass parsed tunnel packet parameters.

ipip.h header is renamed to ip_tunnel.h

Signed-off-by: Pravin B Shelar 
Signed-off-by: David S. Miller

ipv6: introduce ip6tunnel_xmit() helper

2013-03-10T20:53:34+00:00

Similar to iptunnel_xmit(), group these operations into a
helper function.

This by the way fixes the missing u64_stats_update_begin()
and u64_stats_update_end() for 32 bit arch.

Cc: Eric Dumazet 
Cc: Pravin B Shelar 
Cc: "David S. Miller" 
Signed-off-by: Cong Wang 
Signed-off-by: David S. Miller

gre: Support GRE over IPv6

2012-08-14T21:28:32+00:00

GRE over IPv6 implementation.

Signed-off-by: Dmitry Kozlov 
Signed-off-by: David S. Miller

ipv6_tunnel: Allow receiving packets on the fallback tunnel if they pass sanity checks

2012-06-29T07:52:32+00:00

At Facebook, we do Layer-3 DSR via IP-in-IP tunneling. Our load balancers wrap
an extra IP header on incoming packets so they can be routed to the backend.
In the v4 tunnel driver, when these packets fall on the default tunl0 device,
the behavior is to decapsulate them and drop them back on the stack. So our
setup is that tunl0 has the VIP and eth0 has (obviously) the backend's real
address.

In IPv6 we do the same thing, but the v6 tunnel driver didn't have this same
behavior - if you didn't have an explicit tunnel setup, it would drop the
packet.

This patch brings that v4 feature to the v6 driver.

The same IPv6 address checks are performed as with any normal tunnel,
but as the fallback tunnel endpoint addresses are unspecified, the checks
must be performed on a per-packet basis, rather than at tunnel
configuration time.

[Patch description modified by phil@ipom.com]

Signed-off-by: Ville Nuorvala 
Tested-by: Phil Dibowitz 
Signed-off-by: David S. Miller

tunnels: add _rcu annotations

2010-10-25T20:09:45+00:00

(struct ip6_tnl)->next is rcu protected :
(struct ip_tunnel)->next is rcu protected :
(struct xfrm6_tunnel)->next is rcu protected :

add __rcu annotation and proper rcu primitives.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

net: use __packed annotation

2010-06-03T10:21:52+00:00

cleanup patch.

Use new __packed annotation in net/ and include/
(except netfilter)

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv6 ip6_tunnel: eliminate unused recursion field from ip6_tnl{}.

2010-03-10T15:32:29+00:00

Commit a43912ab19... ("tunnel: eliminate recursion field") eliminated
use of recursion field from tunnel structures, but its definition
still exists in ip6_tnl{}.

Let's remove that unused field.

Signed-off-by: YOSHIFUJI Hideaki 
Acked-by: Eric Dumazet 
Signed-off-by: David S. Miller