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openvswitch: Add gre tunnel support.

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Add gre vport implementation.  Most of gre protocol processing
is pushed to gre module. It make use of gre demultiplexer
therefore it can co-exist with linux device based gre tunnels.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar 2013-06-17 17:50:33 -07:00 • committed by David S. Miller
parent a3e82996a8
commit aa310701e7
8 changed files with 323 additions and 2 deletions
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18
net/openvswitch/flow.h
View file

@ -49,11 +49,27 @@ struct ovs_key_ipv4_tunnel {
__be64 tun_id;
__be32 ipv4_src;
__be32 ipv4_dst;
u16 tun_flags;
__be16 tun_flags;
u8 ipv4_tos;
u8 ipv4_ttl;
};
static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
const struct iphdr *iph, __be64 tun_id,
__be16 tun_flags)
{
tun_key->tun_id = tun_id;
tun_key->ipv4_src = iph->saddr;
tun_key->ipv4_dst = iph->daddr;
tun_key->ipv4_tos = iph->tos;
tun_key->ipv4_ttl = iph->ttl;
tun_key->tun_flags = tun_flags;
/* clear struct padding. */
memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
}
struct sw_flow_key {
struct ovs_key_ipv4_tunnel tun_key; /* Encapsulating tunnel key. */
struct {