[bpf-next,v2,0/7] add BPF_F_PERMANENTLY flag for sockmap skmsg redirect

Message

Liu Jian Aug. 11, 2023, 9:32 a.m. UTC

v1->v2: fix one UAF issue, and add some tests.

patch1: Add new BPF_F_PERMANENTLY flag for bpf_msg_redirect_map/bpf_msg_redirect_hash
patch2-patch7: Added some normal and abnormal use cases.

Liu Jian (7):
  bpf, sockmap: add BPF_F_PERMANENTLY flag for skmsg redirect
  selftests/bpf: Add txmsg ingress permanently test for sockmap
  selftests/bpf: Add txmsg redir permanently test for sockmap
  selftests/bpf: add skmsg verdict tests
  selftests/bpf: add two skmsg verdict tests for BPF_F_PERMANENTLY flag
  selftests/bpf: add tests for verdict skmsg to itself
  selftests/bpf: add tests for verdict skmsg to closed socket

 include/linux/skmsg.h                         |   1 +
 include/uapi/linux/bpf.h                      |   7 +-
 net/core/skmsg.c                              |   1 +
 net/core/sock_map.c                           |   4 +-
 net/ipv4/tcp_bpf.c                            |  21 ++-
 tools/include/uapi/linux/bpf.h                |   7 +-
 .../selftests/bpf/prog_tests/sockmap_basic.c  | 122 ++++++++++++++++++
 .../selftests/bpf/progs/test_sockmap_kern.h   |   4 +-
 .../bpf/progs/test_sockmap_msg_verdict.c      |  25 ++++
 tools/testing/selftests/bpf/test_sockmap.c    |  41 +++++-
 10 files changed, 217 insertions(+), 16 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_msg_verdict.c