tree 4c178876a42538fbefb50678562f9801a805d667
parent e5cd3abcb31a48d4ea91bd32f0618802ca5f3592
author John Fastabend <john.fastabend@gmail.com> 1526317217 -0700
committer Daniel Borkmann <daniel@iogearbox.net> 1526409663 +0200

bpf: sockmap, add hash map support

Sockmap is currently backed by an array and enforces keys to be
four bytes. This works well for many use cases and was originally
modeled after devmap which also uses four bytes keys. However,
this has become limiting in larger use cases where a hash would
be more appropriate. For example users may want to use the 5-tuple
of the socket as the lookup key.

To support this add hash support.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>