On Wed, May 04, 2016 at 04:34:22PM +0900, Simon Horman wrote:
> From: Lorand Jakab <loja...@cisco.com>
> 
> This commit relaxes the assumption that all packets have an Ethernet
> header, and adds support for layer 3 flows.  For each packet received on
> the Linux kernel datapath the l2 and l3 members of struct ofpbuf are
> intialized appropriately, and some functions now expect this (notably
> flow_extract()), in order to differentiate between layer 2 and layer 3
> packets.  struct flow has now a new 'base_layer' member, because we
> cannot assume that a flow has no Ethernet header when eth_src and
> eth_dst are 0.  For layer 3 packets, the protocol type is still stored
> in the eth_type member.
> 
> Switching L2->L3 and L3->L2 are both implemented by adding the pop_eth
> and push_eth actions respectively when a transition is detected.  The
> push_eth action puts 0s on both source and destination MACs.  These
> addresses can be modified with mod_dl_dst and mod_dl_src actions.
> 
> Added new prerequisite MFP_ETHERNET for fields MFF_ETH_SRC, MFF_ETH_DST,
> MFF_VLAN_TCI, MFF_DL_VLAN, MFF_VLAN_VID and MFF_DL_VLAN_PCP.

This introduces a duplicate definition of FLOW_MAX_MPLS_LABELS.

Otherwise it seems ok.

Acked-by: Ben Pfaff <b...@ovn.org>
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