Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2023-10-16

We've added 90 non-merge commits during the last 25 day(s) which contain
a total of 120 files changed, 3519 insertions(+), 895 deletions(-).

The main changes are:

1) Add missed stats for kprobes to retrieve the number of missed kprobe
   executions and subsequent executions of BPF programs, from Jiri Olsa.

2) Add cgroup BPF sockaddr hooks for unix sockets. The use case is
   for systemd to reimplement the LogNamespace feature which allows
   running multiple instances of systemd-journald to process the logs
   of different services, from Daan De Meyer.

3) Implement BPF CPUv4 support for s390x BPF JIT, from Ilya Leoshkevich.

4) Improve BPF verifier log output for scalar registers to better
   disambiguate their internal state wrt defaults vs min/max values
   matching, from Andrii Nakryiko.

5) Extend the BPF fib lookup helpers for IPv4/IPv6 to support retrieving
   the source IP address with a new BPF_FIB_LOOKUP_SRC flag,
   from Martynas Pumputis.

6) Add support for open-coded task_vma iterator to help with symbolization
   for BPF-collected user stacks, from Dave Marchevsky.

7) Add libbpf getters for accessing individual BPF ring buffers which
   is useful for polling them individually, for example, from Martin Kelly.

8) Extend AF_XDP selftests to validate the SHARED_UMEM feature,
   from Tushar Vyavahare.

9) Improve BPF selftests cross-building support for riscv arch,
   from Björn Töpel.

10) Add the ability to pin a BPF timer to the same calling CPU,
   from David Vernet.

11) Fix libbpf's bpf_tracing.h macros for riscv to use the generic
   implementation of PT_REGS_SYSCALL_REGS() to access syscall arguments,
   from Alexandre Ghiti.

12) Extend libbpf to support symbol versioning for uprobes, from Hengqi Chen.

13) Fix bpftool's skeleton code generation to guarantee that ELF data
    is 8 byte aligned, from Ian Rogers.

14) Inherit system-wide cpu_mitigations_off() setting for Spectre v1/v4
    security mitigations in BPF verifier, from Yafang Shao.

15) Annotate struct bpf_stack_map with __counted_by attribute to prepare
    BPF side for upcoming __counted_by compiler support, from Kees Cook.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (90 commits)
  bpf: Ensure proper register state printing for cond jumps
  bpf: Disambiguate SCALAR register state output in verifier logs
  selftests/bpf: Make align selftests more robust
  selftests/bpf: Improve missed_kprobe_recursion test robustness
  selftests/bpf: Improve percpu_alloc test robustness
  selftests/bpf: Add tests for open-coded task_vma iter
  bpf: Introduce task_vma open-coded iterator kfuncs
  selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c
  bpf: Don't explicitly emit BTF for struct btf_iter_num
  bpf: Change syscall_nr type to int in struct syscall_tp_t
  net/bpf: Avoid unused "sin_addr_len" warning when CONFIG_CGROUP_BPF is not set
  bpf: Avoid unnecessary audit log for CPU security mitigations
  selftests/bpf: Add tests for cgroup unix socket address hooks
  selftests/bpf: Make sure mount directory exists
  documentation/bpf: Document cgroup unix socket address hooks
  bpftool: Add support for cgroup unix socket address hooks
  libbpf: Add support for cgroup unix socket address hooks
  bpf: Implement cgroup sockaddr hooks for unix sockets
  bpf: Add bpf_sock_addr_set_sun_path() to allow writing unix sockaddr from bpf
  bpf: Propagate modified uaddrlen from cgroup sockaddr programs
  ...
====================

Link: https://lore.kernel.org/r/20231016204803.30153-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

3 files changed, 13 insertions, 2 deletions

diff --git a/Documentation/admin-guide/sysctl/net.rst b/Documentation/admin-guide/sysctl/net.rst
index 4877563241f3..c7525942f12c 100644
--- a/Documentation/admin-guide/sysctl/net.rst
+++ b/Documentation/admin-guide/sysctl/net.rst
@@ -71,6 +71,7 @@ two flavors of JITs, the newer eBPF JIT currently supported on:
   - s390x
   - riscv64
   - riscv32
+  - loongarch64
 
 And the older cBPF JIT supported on the following archs:
 
diff --git a/Documentation/bpf/libbpf/program_types.rst b/Documentation/bpf/libbpf/program_types.rst
index ad4d4d5eecb0..63bb88846e50 100644
--- a/Documentation/bpf/libbpf/program_types.rst
+++ b/Documentation/bpf/libbpf/program_types.rst
@@ -56,6 +56,16 @@ described in more detail in the footnotes.
 |                                           | ``BPF_CGROUP_UDP6_RECVMSG``            | ``cgroup/recvmsg6``              |           |
 +                                           +----------------------------------------+----------------------------------+-----------+
 |                                           | ``BPF_CGROUP_UDP6_SENDMSG``            | ``cgroup/sendmsg6``              |           |
+|                                           +----------------------------------------+----------------------------------+-----------+
+|                                           | ``BPF_CGROUP_UNIX_CONNECT``            | ``cgroup/connect_unix``          |           |
+|                                           +----------------------------------------+----------------------------------+-----------+
+|                                           | ``BPF_CGROUP_UNIX_SENDMSG``            | ``cgroup/sendmsg_unix``          |           |
+|                                           +----------------------------------------+----------------------------------+-----------+
+|                                           | ``BPF_CGROUP_UNIX_RECVMSG``            | ``cgroup/recvmsg_unix``          |           |
+|                                           +----------------------------------------+----------------------------------+-----------+
+|                                           | ``BPF_CGROUP_UNIX_GETPEERNAME``        | ``cgroup/getpeername_unix``      |           |
+|                                           +----------------------------------------+----------------------------------+-----------+
+|                                           | ``BPF_CGROUP_UNIX_GETSOCKNAME``        | ``cgroup/getsockname_unix``      |           |
 +-------------------------------------------+----------------------------------------+----------------------------------+-----------+
 | ``BPF_PROG_TYPE_CGROUP_SOCK``             | ``BPF_CGROUP_INET4_POST_BIND``         | ``cgroup/post_bind4``            |           |
 +                                           +----------------------------------------+----------------------------------+-----------+
diff --git a/Documentation/networking/filter.rst b/Documentation/networking/filter.rst
index f69da5074860..7d8c5380492f 100644
--- a/Documentation/networking/filter.rst
+++ b/Documentation/networking/filter.rst
@@ -650,8 +650,8 @@ before a conversion to the new layout is being done behind the scenes!
 
 Currently, the classic BPF format is being used for JITing on most
 32-bit architectures, whereas x86-64, aarch64, s390x, powerpc64,
-sparc64, arm32, riscv64, riscv32 perform JIT compilation from eBPF
-instruction set.
+sparc64, arm32, riscv64, riscv32, loongarch64 perform JIT compilation
+from eBPF instruction set.
 
 Testing
 -------