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The per-tunnel session list is no longer used by the datapath. However, we still need a list of sessions in the tunnel for l2tp_session_get_nth, which is used by management code. (An alternative might be to walk each session IDR list, matching only sessions of a given tunnel.) Replace the per-tunnel hlist with a per-tunnel list. In functions which walk a list of sessions of a tunnel, walk this list instead. Signed-off-by: James Chapman <jchapman@katalix.com> Reviewed-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>