This series adds helpers for sk_msg program type and based on feedback from v1 adds *_task_* helpers and probe_* helpers to all networking programs with perfmon_capable() capabilities. The list of helpers breaks down as follows, Networking with perfmon_capable() guard (patch2): BPF_FUNC_get_current_task BPF_FUNC_current_task_under_cgroup BPF_FUNC_probe_read_user BPF_FUNC_probe_read_kernel BPF_FUNC_probe_read_user_str BPF_FUNC_probe_read_kernel_str Added to sk_msg program types (patch1,3): BPF_FUNC_perf_event_output BPF_FUNC_get_current_uid_gid BPF_FUNC_get_current_pid_tgid BPF_FUNC_get_current_cgroup_id BPF_FUNC_get_current_ancestor_cgroup_id BPF_FUNC_get_cgroup_classid BPF_FUNC_sk_storage_get BPF_FUNC_sk_storage_delete For testing we create two tests. One specifically for the sk_msg program types which encodes a common pattern we use to test verifier logic now and as the verifier evolves. Next we have skb classifier test. This uses the test run infra to run a test which uses the get_current_task, current_task_under_cgroup, probe_read_kernel, and probe_reak_kernel_str. Note we dropped the old probe_read variants probe_read() and probe_read_str() in v2. v1->v2: Pulled generic helpers *current_task* and probe_* into the base func helper so they can be used more widely in netowrking scope. BPF capabilities patch is now in bpf-next so use perfmon_capable() check instead of CAP_SYS_ADMIN. Drop old probe helpers, probe_read() and probe_read_str() Added tests. Thanks to Daniel and Yonghong for review and feedback. --- John Fastabend (5): bpf: sk_msg add some generic helpers that may be useful from sk_msg bpf: extend bpf_base_func_proto helpers with probe_* and *current_task* bpf: sk_msg add get socket storage helpers bpf: selftests, add sk_msg helpers load and attach test bpf: selftests, test probe_* helpers from SCHED_CLS include/uapi/linux/bpf.h | 2 + kernel/bpf/helpers.c | 27 +++++++++ kernel/trace/bpf_trace.c | 16 +++--- net/core/filter.c | 31 +++++++++++ tools/include/uapi/linux/bpf.h | 2 + .../testing/selftests/bpf/prog_tests/skb_helpers.c | 30 +++++++++++ .../selftests/bpf/prog_tests/sockmap_basic.c | 57 ++++++++++++++++++++ .../testing/selftests/bpf/progs/test_skb_helpers.c | 33 ++++++++++++ .../selftests/bpf/progs/test_skmsg_load_helpers.c | 48 +++++++++++++++++ 9 files changed, 238 insertions(+), 8 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/skb_helpers.c create mode 100644 tools/testing/selftests/bpf/progs/test_skb_helpers.c create mode 100644 tools/testing/selftests/bpf/progs/test_skmsg_load_helpers.c -- Signature