[Xen-devel] [PATCH net-next 0/8] xen-netback/core: packet hashing

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

This series adds xen-netback support for hash negotiation with a frontend
driver, and an implementation of toeplitz hashing as the initial negotiable
algorithm.

Patch #1 re-imports the canonical netif header from Xen, which contains
the necessary definitions and a type required by subsequent patches.
(Note that this patch is not completely style-clean since the header
includes typedefs).

Patch #2 is some cleanup in xen-netback.

Patch #3 adds code to allow multiple extra_info segments to be passed from a
frontend to xen-netback.

Patch #4 adds code to allow xen-netback to accept new hash extra_info
segments from a frontend and set the skb hash information appropriately. 

Patch #5 makes a change to struct sk_buff: one extra bit is used to allow
full hash type information to be stored, rather than just the l4_hash
boolean value.

Patch #6 adds code to xen-netback to pass L3 or L4 skb hash values to
capable frontends.

Patch #7 adds code to xen-netback to provide a configurable (by the
frontend) mapping from hash values to queue numbers.

Patch #8 adds code to xen-netback to provide toeplitz hashing of skbs.

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