netfilter: revert introduction of egress hook

This reverts the following commits:

  8537f78647c0 ("netfilter: Introduce egress hook")
  5418d3881e1f ("netfilter: Generalize ingress hook")
  b030f194aed2 ("netfilter: Rename ingress hook include file")

>From the discussion in [0], the author's main motivation to add a hook
in fast path is for an out of tree kernel module, which is a red flag
to begin with. Other mentioned potential use cases like NAT{64,46}
is on future extensions w/o concrete code in the tree yet. Revert as
suggested [1] given the weak justification to add more hooks to critical
fast-path.

  [0] https://lore.kernel.org/netdev/[email protected]/
  [1] https://lore.kernel.org/netdev/[email protected]/

Signed-off-by: Daniel Borkmann <[email protected]>
Cc: David Miller <[email protected]>
Cc: Pablo Neira Ayuso <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Nacked-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions