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Change in Openvswitch to support MPLS label depth of 3 in ingress direction

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The openvswitch was supporting a MPLS label depth of 1 in the ingress
direction though the userspace OVS supports a max depth of 3 labels.
This change enables openvswitch module to support a max depth of
3 labels in the ingress.

Signed-off-by: Martin Varghese <martin.varghese@nokia.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Varghese
2019-11-04 07:27:44 +05:30
committed by David S. Miller
parent a5ec65169c
commit fbdcdd78da
4 changed files with 85 additions and 33 deletions
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9
net/openvswitch/flow.h
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@@ -30,6 +30,7 @@ enum sw_flow_mac_proto {
MAC_PROTO_ETHERNET,
};
#define SW_FLOW_KEY_INVALID 0x80
#define MPLS_LABEL_DEPTH 3
/* Store options at the end of the array if they are less than the
* maximum size. This allows us to get the benefits of variable length
@@ -84,9 +85,6 @@ struct sw_flow_key {
* protocol.
*/
union {
struct {
__be32 top_lse; /* top label stack entry */
} mpls;
struct {
u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */
u8 tos; /* IP ToS. */
@@ -135,6 +133,11 @@ struct sw_flow_key {
} nd;
};
} ipv6;
struct {
u32 num_labels_mask; /* labels present bitmap of effective length MPLS_LABEL_DEPTH */
__be32 lse[MPLS_LABEL_DEPTH]; /* label stack entry */
} mpls;
struct ovs_key_nsh nsh; /* network service header */
};
struct {