diff options
| author |   Andy Zhou <azhou@nicira.com> | 2014-10-03 15:35:28 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-10-06 00:32:20 -0400 |
| commit | 0b5e8b8eeae40bae6ad7c7e91c97c3c0d0e57882 (patch) | |
| tree | 1e3263634ab52faac57459120033776cf1a08542 /include/net/geneve.h | |
| parent | net: fec: fix build error at m68k platform (diff) | |
| download | linux-dev-0b5e8b8eeae40bae6ad7c7e91c97c3c0d0e57882.tar.xz linux-dev-0b5e8b8eeae40bae6ad7c7e91c97c3c0d0e57882.zip | |
net: Add Geneve tunneling protocol driver
This adds a device level support for Geneve -- Generic Network
Virtualization Encapsulation. The protocol is documented at
http://tools.ietf.org/html/draft-gross-geneve-01
Only protocol layer Geneve support is provided by this driver.
Openvswitch can be used for configuring, set up and tear down
functional Geneve tunnels.
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/geneve.h')
| -rw-r--r-- | include/net/geneve.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/include/net/geneve.h b/include/net/geneve.h new file mode 100644 index 000000000000..ce98865318bf --- /dev/null +++ b/include/net/geneve.h @@ -0,0 +1,91 @@ +#ifndef __NET_GENEVE_H +#define __NET_GENEVE_H 1 + +#include <net/udp_tunnel.h> + +struct geneve_sock; + +typedef void (geneve_rcv_t)(struct geneve_sock *gs, struct sk_buff *skb); + +struct geneve_sock { + struct hlist_node hlist; + geneve_rcv_t *rcv; + void *rcv_data; + struct work_struct del_work; + struct socket *sock; + struct rcu_head rcu; + atomic_t refcnt; + struct udp_offload udp_offloads; +}; + +/* Geneve Header: + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Ver| Opt Len |O|C| Rsvd. | Protocol Type | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Virtual Network Identifier (VNI) | Reserved | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Variable Length Options | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * + * Option Header: + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Option Class | Type |R|R|R| Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Variable Option Data | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +struct geneve_opt { + __be16 opt_class; + u8 type; +#ifdef __LITTLE_ENDIAN_BITFIELD + u8 length:5; + u8 r3:1; + u8 r2:1; + u8 r1:1; +#else + u8 r1:1; + u8 r2:1; + u8 r3:1; + u8 length:5; +#endif + u8 opt_data[]; +}; + +#define GENEVE_CRIT_OPT_TYPE (1 << 7) + +struct genevehdr { +#ifdef __LITTLE_ENDIAN_BITFIELD + u8 opt_len:6; + u8 ver:2; + u8 rsvd1:6; + u8 critical:1; + u8 oam:1; +#else + u8 ver:2; + u8 opt_len:6; + u8 oam:1; + u8 critical:1; + u8 rsvd1:6; +#endif + __be16 proto_type; + u8 vni[3]; + u8 rsvd2; + struct geneve_opt options[]; +}; + +#define GENEVE_VER 0 +#define GENEVE_BASE_HLEN (sizeof(struct udphdr) + sizeof(struct genevehdr)) + +struct geneve_sock *geneve_sock_add(struct net *net, __be16 port, + geneve_rcv_t *rcv, void *data, + bool no_share, bool ipv6); + +void geneve_sock_release(struct geneve_sock *vs); + +int geneve_xmit_skb(struct geneve_sock *gs, struct rtable *rt, + struct sk_buff *skb, __be32 src, __be32 dst, __u8 tos, + __u8 ttl, __be16 df, __be16 src_port, __be16 dst_port, + __be16 tun_flags, u8 vni[3], u8 opt_len, u8 *opt, + bool xnet); +#endif |