linux-toradex.git/net/ipv4/udp_tunnel.c, branch v4.9.131

net: Remove deprecated tunnel specific UDP offload functions

2016-06-18T03:23:32+00:00

Now that we have all the drivers using udp_tunnel_get_rx_ports,
ndo_add_udp_enc_rx_port, and ndo_del_udp_enc_rx_port we can drop the
function calls that were specific to VXLAN and GENEVE.

Signed-off-by: Alexander Duyck 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

net: Merge VXLAN and GENEVE push notifiers into a single notifier

2016-06-18T03:23:29+00:00

This patch merges the notifiers for VXLAN and GENEVE into a single UDP
tunnel notifier.  The idea is that we will want to only have to make one
notifier call to receive the list of ports for VXLAN and GENEVE tunnels
that need to be offloaded.

In addition we add a new set of ndo functions named ndo_udp_tunnel_add and
ndo_udp_tunnel_del that are meant to allow us to track the tunnel meta-data
such as port and address family as tunnels are added and removed.  The
tunnel meta-data is now transported in a structure named udp_tunnel_info
which for now carries the type, address family, and port number.  In the
future this could be updated so that we can include a tuple of values
including things such as the destination IP address and other fields.

I also ended up going with a naming scheme that consisted of using the
prefix udp_tunnel on function names.  I applied this to the notifier and
ndo ops as well so that it hopefully points to the fact that these are
primarily used in the udp_tunnel functions.

Signed-off-by: Alexander Duyck 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

net: Combine GENEVE and VXLAN port notifiers into single functions

2016-06-18T03:23:29+00:00

This patch merges the GENEVE and VXLAN code so that both functions pass
through a shared code path.  This way we can start the effort of using a
single function on the network device drivers to handle both of these
tunnel types.

Signed-off-by: Alexander Duyck 
Acked-by: Hannes Frederic Sowa 
Signed-off-by: David S. Miller

udp: Add socket based GRO and config

2016-04-07T20:53:29+00:00

Add gro_receive and  gro_complete to struct udp_tunnel_sock_cfg.

Signed-off-by: Tom Herbert 
Signed-off-by: David S. Miller

tunnel: Clear IPCB(skb)->opt before dst_link_failure called

2016-02-24T00:11:56+00:00

IPCB may contain data from previous layers (in the observed case the
qdisc layer). In the observed scenario, the data was misinterpreted as
ip header options, which later caused the ihl to be set to an invalid
value (<5). This resulted in an infinite loop in the mips implementation
of ip_fast_csum.

This patch clears IPCB(skb)->opt before dst_link_failure can be called for
various types of tunnels. This change only applies to encapsulated ipv4
packets.

The code introduced in 11c21a30 which clears all of IPCB has been removed
to be consistent with these changes, and instead the opt field is cleared
unconditionally in ip_tunnel_xmit. The change in ip_tunnel_xmit applies to
SIT, GRE, and IPIP tunnels.

The relevant vti, l2tp, and pptp functions already contain similar code for
clearing the IPCB.

Signed-off-by: Bernie Harris 
Signed-off-by: David S. Miller

ip_tunnel: Move stats update to iptunnel_xmit()

2015-12-26T04:32:23+00:00

By moving stats update into iptunnel_xmit(), we can simplify
iptunnel_xmit() usage. With this change there is no need to
call another function (iptunnel_xmit_stats()) to update stats
in tunnel xmit code path.

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

tunnel: introduce udp_tun_rx_dst()

2015-08-27T22:42:47+00:00

Introduce function udp_tun_rx_dst() to initialize tunnel dst on
receive path.

Signed-off-by: Pravin B Shelar 
Reviewed-by: Jesse Gross 
Acked-by: Thomas Graf 
Signed-off-by: David S. Miller

net: Modify sk_alloc to not reference count the netns of kernel sockets.

2015-05-11T14:50:18+00:00

Now that sk_alloc knows when a kernel socket is being allocated modify
it to not reference count the network namespace of kernel sockets.

Keep track of if a socket needs reference counting by adding a flag to
struct sock called sk_net_refcnt.

Update all of the callers of sock_create_kern to stop using
sk_change_net and sk_release_kernel as those hacks are no longer
needed, to avoid reference counting a kernel socket.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

net: Add a struct net parameter to sock_create_kern

2015-05-11T14:50:17+00:00

This is long overdue, and is part of cleaning up how we allocate kernel
sockets that don't reference count struct net.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb().

2015-04-07T19:29:08+00:00

That was we can make sure the output path of ipv4/ipv6 operate on
the UDP socket rather than whatever random thing happens to be in
skb->sk.

Based upon a patch by Jiri Pirko.

Signed-off-by: David S. Miller 
Acked-by: Hannes Frederic Sowa