On Mon, Jun 18, 2012 at 12:58:24PM +0900, Simon Horman wrote: > I am a little unsure what the correct length of the payload of > OXM_OF_IPV6_FLABEL and OXM_OF_MPLS_LABEL should be. The Open Flow 1.2 > specification gives them both a length of 20 bits. Should this be > interpreted as 3 or 4 bytes?
openflow.h from OF1.2 says: /* The IPv6 Flow Label * * Prereqs: * OXM_OF_ETH_TYPE must match 0x86dd exactly * * Format: 32-bit integer with 12 most-significant bits forced to 0. * Only the lower 20 bits have meaning. * * Masking: Maskable. */ #define OXM_OF_IPV6_FLABEL OXM_HEADER (0x8000, OFPXMT_OFB_IPV6_FLABEL, 4) /* The LABEL in the first MPLS shim header. * * Prereqs: * OXM_OF_ETH_TYPE must match 0x8847 or 0x8848 exactly. * * Format: 32-bit integer in network byte order with 12 most-significant * bits forced to 0. Only the lower 20 bits have meaning. * * Masking: Not maskable. */ #define OXM_OF_MPLS_LABEL OXM_HEADER (0x8000, OFPXMT_OFB_MPLS_LABEL, 4) That is, each one is 4 bytes. It doesn't seem to be easy to obtain openflow.h for OF1.2, but it's available in the ONF Git repository, if you have access to it. _______________________________________________ dev mailing list [email protected] http://openvswitch.org/mailman/listinfo/dev
