[PATCH 0/4] udp: Fix some confusion of IPv4 and IPv6 control structures

[David Gibson <david@gibson.dropbear.id.au>]

It turns out a couple of places on the IPv4 specific inbound path
accidentally use control structures that are supposed to be for IPv6.
That could lead to weird behaviour in a rather complex set of
circumstances.

Path 1/4 here is the actual fix, the rest makes some clean ups to the
code that should make similar mistakes harder errors harder to commit
in future.

This is based on my earlier cleanup of the UDP splicing code, although
I think it will rebase trivially.

David Gibson (4):
  udp: Fix inorrect use of IPv6 mh buffers in IPv4 path
  udp: Better factor IPv4 and IPv6 paths in udp_sock_handler()
  udp: Preadjust udp[46]_l2_iov_tap[].iov_base for pasta mode
  udp: Factor out control structure management from
    udp_sock_fill_data_v[46]

 udp.c | 184 ++++++++++++++++++++++++++--------------------------------
 1 file changed, 81 insertions(+), 103 deletions(-)

-- 
2.38.1