linux.git/include/net/vxlan.h, branch v4.13-rc2

net, vxlan: convert vxlan_sock.refcnt from atomic_t to refcount_t

2017-07-04T21:35:15+00:00

refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova 
Signed-off-by: Hans Liljestrand 
Signed-off-by: Kees Cook 
Signed-off-by: David Windsor 
Signed-off-by: David S. Miller

vxlan: fix hlist corruption

2017-07-03T09:36:27+00:00

It's not a good idea to add the same hlist_node to two different hash lists.
This leads to various hard to debug memory corruptions.

Fixes: b1be00a6c39f ("vxlan: support both IPv4 and IPv6 sockets in a single vxlan device")
Signed-off-by: Jiri Benc 
Signed-off-by: David S. Miller

vxlan: check valid combinations of address scopes

2017-06-20T17:37:02+00:00

* Multicast addresses are never valid as local address
* Link-local IPv6 unicast addresses may only be used as remote when the
  local address is link-local as well
* Don't allow link-local IPv6 local/remote addresses without interface

We also store in the flags field if link-local addresses are used for the
follow-up patches that actually make VXLAN over link-local IPv6 work.

Signed-off-by: Matthias Schiffer 
Signed-off-by: David S. Miller

vxlan: get rid of redundant vxlan_dev.flags

2017-06-20T17:37:02+00:00

There is no good reason to keep the flags twice in vxlan_dev and
vxlan_config.

Signed-off-by: Matthias Schiffer 
Signed-off-by: David S. Miller

vxlan: remove unsed vxlan_dev_dst_port()

2016-11-15T17:16:13+00:00

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

vxlan: avoid using stale vxlan socket.

2016-10-30T00:56:31+00:00

When vxlan device is closed vxlan socket is freed. This
operation can race with vxlan-xmit function which
dereferences vxlan socket. Following patch uses RCU
mechanism to avoid this situation.

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

net/ip_tunnels: Introduce tunnel_id_to_key32() and key32_to_tunnel_id()

2016-09-11T03:53:55+00:00

Add utility functions to convert a 32 bits key into a 64 bits tunnel and
vice versa.
These functions will be used instead of cloning code in GRE and VXLAN,
and in tc act_iptunnel which will be introduced in a following patch in
this patchset.

Signed-off-by: Amir Vadai 
Signed-off-by: Hadar Hen Zion 
Reviewed-by: Shmulik Ladkani 
Acked-by: Jiri Benc 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

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

vxlan/geneve: Include udp_tunnel.h in vxlan/geneve.h and fixup includes

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

This patch makes it so that we add udp_tunnel.h to vxlan.h and geneve.h
header files.  This is useful as I plan to move the generic handlers for
the port offloads into the udp_tunnel header file and leave the vxlan and
geneve headers to be a bit more protocol specific.

I also went through and cleaned out a number of redundant includes that
where in the .h and .c files for these drivers.

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