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tunneling: Add userspace tunnel support for Geneve.

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This adds basic userspace dataplane support for the Geneve
tunneling protocol. The rest of userspace only has the ability
to handle Geneve without options and this follows that pattern
for the time being. However, when the rest of userspace is updated
it should be easy to extend the dataplane as well.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Jesse Gross
2015-03-26 13:51:06 -07:00
parent e066f78fea
commit e5a1caeed4
6 changed files with 177 additions and 6 deletions
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19
lib/packets.h
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@@ -733,6 +733,25 @@ struct geneve_opt {
uint8_t opt_data[];
};
struct genevehdr {
#ifdef WORDS_BIGENDIAN
uint8_t ver:2;
uint8_t opt_len:6;
uint8_t oam:1;
uint8_t critical:1;
uint8_t rsvd1:6;
#else
uint8_t opt_len:6;
uint8_t ver:2;
uint8_t rsvd1:6;
uint8_t critical:1;
uint8_t oam:1;
#endif
ovs_be16 proto_type;
ovs_16aligned_be32 vni;
struct geneve_opt options[];
};
/* GRE protocol header */
struct gre_base_hdr {
ovs_be16 flags;