This patch adds IPsec extended sequence numbers support to esp4.
We use the authencesn crypto algorithm to handle esp with separate
encryption/authentication algorithms.
Signed-off-by: NSteffen Klassert <steffen.klassert@secunet.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>