[PATCH 0/7] TCP-AO fixes

[Dmitry Safonov]

Hi,

I've been working on TCP-AO key-rotation selftests and as a result
exercised some corner-cases that are not usually met in production.

Here are a bunch of semi-related fixes:
- Documentation typo (reported by Markus Elfring)
- Proper alignment for TCP-AO option in TCP header that has MAC length
  of non 4 bytes (now a selftest with randomized maclen/algorithm/etc
  passes)
- 3 uAPI restricting patches that disallow more things to userspace in
  order to prevent it shooting itself in any parts of the body
- SNEs READ_ONCE()/WRITE_ONCE() that went missing by my human factor
- Avoid storing MAC length from SYN header as SYN-ACK will use
  rnext_key.maclen (drops an extra check that fails on new selftests)

Please, consider applying/pulling.

The following changes since commit 98b1cc82c4affc16f5598d4fa14b1858671b2263:

  Linux 6.7-rc2 (2023-11-19 15:02:14 -0800)

are available in the Git repository at:

  git@xxxxxxxxxx:0x7f454c46/linux.git tcp-ao-post-merge

for you to fetch changes up to 4555b5b8d11f4d19ef32a761e2d87dd378e9a435:

  net/tcp: Don't store TCP-AO maclen on reqsk (2023-11-21 01:48:23 +0000)

----------------------------------------------------------------
Dmitry Safonov (7):
      Documentation/tcp: Fix an obvious typo
      net/tcp: Consistently align TCP-AO option in the header
      net/tcp: Limit TCP_AO_REPAIR to non-listen sockets
      net/tcp: Reset TCP-AO cached keys on listen() syscall
      net/tcp: Don't add key with non-matching VRF on connected sockets
      net/tcp: ACCESS_ONCE() on snd/rcv SNEs
      net/tcp: Don't store TCP-AO maclen on reqsk

Thanks,
             Dmitry

Cc: David Ahern <dsahern@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Dmitry Safonov <0x7f454c46@xxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Francesco Ruggeri <fruggeri05@xxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
Cc: Salam Noureddine <noureddine@xxxxxxxxxx>
Cc: Simon Horman <horms@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx


Dmitry Safonov (7):
  Documentation/tcp: Fix an obvious typo
  net/tcp: Consistently align TCP-AO option in the header
  net/tcp: Limit TCP_AO_REPAIR to non-listen sockets
  net/tcp: Reset TCP-AO cached keys on listen() syscall
  net/tcp: Don't add key with non-matching VRF on connected sockets
  net/tcp: ACCESS_ONCE() on snd/rcv SNEs
  net/tcp: Don't store TCP-AO maclen on reqsk

 Documentation/networking/tcp_ao.rst |  2 +-
 include/linux/tcp.h                 | 10 ++++------
 include/net/tcp_ao.h                | 11 +++++++++++
 net/ipv4/af_inet.c                  |  1 +
 net/ipv4/tcp.c                      |  6 ++++++
 net/ipv4/tcp_ao.c                   | 29 +++++++++++++++++++++++------
 net/ipv4/tcp_input.c                |  9 +++++----
 net/ipv4/tcp_ipv4.c                 |  4 ++--
 net/ipv4/tcp_minisocks.c            |  2 +-
 net/ipv4/tcp_output.c               | 15 ++++++---------
 net/ipv6/tcp_ipv6.c                 |  2 +-
 11 files changed, 61 insertions(+), 30 deletions(-)


base-commit: 98b1cc82c4affc16f5598d4fa14b1858671b2263
-- 
2.42.0