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datapath: Add basic MPLS support to kernel

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Allow datapath to recognize and extract MPLS labels into flow keys
and execute actions which push, pop, and set labels on packets.

Based heavily on work by Leo Alterman, Ravi K, Isaku Yamahata and Joe Stringer.

Cc: Ravi K <rkerur@gmail.com>
Cc: Leo Alterman <lalterman@nicira.com>
Cc: Isaku Yamahata <yamahata@valinux.co.jp>
Cc: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Simon Horman
2014-06-24 20:56:57 +09:00
committed by Jesse Gross
parent b2f771efca
commit ccf4378615
14 changed files with 429 additions and 65 deletions
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9
include/linux/openvswitch.h
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@@ -319,15 +319,14 @@ enum ovs_key_attr {
OVS_KEY_ATTR_DP_HASH, /* u32 hash value. Value 0 indicates the hash
is not computed by the datapath. */
OVS_KEY_ATTR_RECIRC_ID, /* u32 recirc id */
OVS_KEY_ATTR_MPLS, /* array of struct ovs_key_mpls.
* The implementation may restrict
* the accepted length of the array. */
#ifdef __KERNEL__
/* Only used within kernel data path. */
OVS_KEY_ATTR_TUNNEL_INFO, /* struct ovs_tunnel_info */
#endif
/* Experimental */
OVS_KEY_ATTR_MPLS = 62, /* array of struct ovs_key_mpls.
* The implementation may restrict
* the accepted length of the array. */
__OVS_KEY_ATTR_MAX
};