linux/include/net/vxlan.h, branch v4.6

vxlan: Add checksum check to the features check function

2016-05-03T20:00:54Z

We need to perform an additional check on the inner headers to determine if we can offload the checksum for them. Previously this check didn't occur so we would generate an invalid frame in the case of an IPv6 header encapsulated inside of an IPv4 tunnel. To fix this I added a secondary check to vxlan_features_check so that we can verify that we can offload the inner checksum. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller

vxlan: fix sparse warnings

2016-03-21T17:30:02Z

Sparse reports false positives for the header manipulation inlines. Annotate them correctly. Tested by sparse on a little endian and big endian machine. Fixes: 54bfd872bf16d ("vxlan: keep flags and vni in network byte order") Reported-by: kbuild test robot Signed-off-by: Jiri Benc Signed-off-by: David S. Miller

vxlan: support setting IPv6 flow label

2016-03-11T20:14:26Z

This work adds support for setting the IPv6 flow label for vxlan per device and through collect metadata (ip_tunnel_key) frontends. The vxlan dst cache does not need any special considerations here, for the cases where caches can be used, the label is static per cache. Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller

VXLAN: Support outer IPv4 Tx checksums by default

2016-02-22T03:05:50Z

This change makes it so that if UDP CSUM is not specified we will default to enabling it. The main motivation behind this is the fact that with the use of outer checksum we can greatly improve the performance for VXLAN tunnels on devices that don't know how to parse tunnel headers. Signed-off-by: Alexander Duyck Acked-by: Tom Herbert Signed-off-by: David S. Miller

vxlan: tun_id is 64bit, not 32bit

2016-02-18T18:55:24Z

The tun_id field in struct ip_tunnel_key is __be64, not __be32. We need to convert the vni to tun_id correctly. Fixes: 54bfd872bf16 ("vxlan: keep flags and vni in network byte order") Reported-by: Paolo Abeni Tested-by: Paolo Abeni Signed-off-by: Jiri Benc Acked-by: Thadeu Lima de Souza Cascardo Signed-off-by: David S. Miller

vxlan: keep flags and vni in network byte order

2016-02-18T04:52:11Z

Prevent repeated conversions from and to network order in the fast path. To achieve this, define all flag constants in big endian order and store VNI as __be32. To prevent confusion between the actual VNI value and the VNI field from the header (which contains additional reserved byte), strictly distinguish between "vni" and "vni_field". Signed-off-by: Jiri Benc Signed-off-by: David S. Miller

vxlan: introduce vxlan_hdr

2016-02-18T04:52:11Z

Currently, pointer to the vxlan header is kept in a local variable. It has to be reloaded whenever the pskb pull operations are performed which usually happens somewhere deep in called functions. Create a vxlan_hdr function and use it to reference the vxlan header instead. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller

net: use dst_cache for vxlan device

2016-02-17T01:21:48Z

In case of UDP traffic with datagram length below MTU this give about 3% performance increase when tunneling over ipv4 and about 70% when tunneling over ipv6. Signed-off-by: Paolo Abeni Suggested-and-acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller

vxlan: restructure vxlan.h definitions

2016-02-07T18:51:00Z

RCO and GBP are VXLAN extensions, not specified in RFC 7348. Because of that, they need to be explicitly enabled when creating vxlan interface. By default, those extensions are not used and plain VXLAN header is sent and received. Reflect this in vxlan.h: first, the plain VXLAN header is defined. Following it, RCO is documented and defined, and likewise for GBP. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller

vxlan: remove duplicated macros

2016-02-07T18:51:00Z

VNI_HASH_BITS and VNI_HASH_SIZE are defined twice. Remove the extra definitions. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller