[PATCH v2 bpf-next 00/17] bpf: net: Remove duplicated code from bpf_getsockopt()

[Martin KaFai Lau <kafai@fb.com>]

From: Martin KaFai Lau <martin.lau@kernel.org>

The earlier commits [0] removed duplicated code from bpf_setsockopt().
This series is to remove duplicated code from bpf_getsockopt().

Unlike the setsockopt() which had already changed to take
the sockptr_t argument, the same has not been done to
getsockopt().  This is the extra step being done in this
series.

[0]: https://lore.kernel.org/all/20220817061704.4174272-1-kafai@fb.com/

v2:
- The previous v2 did not reach the list. It is a resend.
- Add comments on bpf_getsockopt() should not free
  the saved_syn (Stanislav)
- Explicitly null-terminate the tcp-cc name (Stanislav)

Martin KaFai Lau (17):
  net: Change sock_getsockopt() to take the sk ptr instead of the sock
    ptr
  bpf: net: Change sk_getsockopt() to take the sockptr_t argument
  bpf: net: Avoid sk_getsockopt() taking sk lock when called from bpf
  bpf: net: Change do_tcp_getsockopt() to take the sockptr_t argument
  bpf: net: Avoid do_tcp_getsockopt() taking sk lock when called from
    bpf
  bpf: net: Change do_ip_getsockopt() to take the sockptr_t argument
  bpf: net: Avoid do_ip_getsockopt() taking sk lock when called from bpf
  net: Remove unused flags argument from do_ipv6_getsockopt
  net: Add a len argument to compat_ipv6_get_msfilter()
  bpf: net: Change do_ipv6_getsockopt() to take the sockptr_t argument
  bpf: net: Avoid do_ipv6_getsockopt() taking sk lock when called from
    bpf
  bpf: Embed kernel CONFIG check into the if statement in bpf_getsockopt
  bpf: Change bpf_getsockopt(SOL_SOCKET) to reuse sk_getsockopt()
  bpf: Change bpf_getsockopt(SOL_TCP) to reuse do_tcp_getsockopt()
  bpf: Change bpf_getsockopt(SOL_IP) to reuse do_ip_getsockopt()
  bpf: Change bpf_getsockopt(SOL_IPV6) to reuse do_ipv6_getsockopt()
  selftest/bpf: Add test for bpf_getsockopt()

 include/linux/filter.h                        |   3 +-
 include/linux/igmp.h                          |   4 +-
 include/linux/mroute.h                        |   6 +-
 include/linux/mroute6.h                       |   4 +-
 include/linux/sockptr.h                       |   5 +
 include/net/ip.h                              |   2 +
 include/net/ipv6.h                            |   4 +-
 include/net/ipv6_stubs.h                      |   2 +
 include/net/sock.h                            |   2 +
 include/net/tcp.h                             |   2 +
 net/core/filter.c                             | 220 ++++++++----------
 net/core/sock.c                               |  51 ++--
 net/ipv4/igmp.c                               |  22 +-
 net/ipv4/ip_sockglue.c                        |  98 ++++----
 net/ipv4/ipmr.c                               |   9 +-
 net/ipv4/tcp.c                                |  92 ++++----
 net/ipv6/af_inet6.c                           |   1 +
 net/ipv6/ip6mr.c                              |  10 +-
 net/ipv6/ipv6_sockglue.c                      |  95 ++++----
 net/ipv6/mcast.c                              |   8 +-
 .../selftests/bpf/progs/bpf_tracing_net.h     |   1 +
 .../selftests/bpf/progs/setget_sockopt.c      | 148 ++++--------
 22 files changed, 379 insertions(+), 410 deletions(-)

-- 
2.30.2