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[bpf-next,0/3] bpf: Add sk_msg helpers

Message ID 158939776371.17281.8506900883049313932.stgit@john-Precision-5820-Tower
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Series bpf: Add sk_msg helpers | expand

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John Fastabend May 13, 2020, 7:23 p.m. UTC 
This series adds helpers for sk_msg program type.

Add a set of helpers that makes sk_msg more useful. Notable add the
*current_task* getters and the probe_* routines guarded by a capabilities
check for CAP_SYS_ADMIN.

 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_get_current_task
 BPF_FUNC_current_task_under_cgroup
 BPF_FUNC_probe_read_user
 BPF_FUNC_probe_read_kernel
 BPF_FUNC_probe_read
 BPF_FUNC_probe_read_user_str
 BPF_FUNC_probe_read_kernel_str
 BPF_FUNC_probe_read_str

 BPF_FUNC_sk_storage_get
 BPF_FUNC_sk_storage_delete

I have an RFC test for sk_storage_* patch that is pending merge of
other sockmap_test patches.

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John Fastabend (3):
      bpf: sk_msg add some generic helpers that may be useful from sk_msg
      bpf: sk_msg helpers for probe_* and *current_task*
      bpf: sk_msg add get socket storage helpers


 include/uapi/linux/bpf.h |    2 +
 kernel/trace/bpf_trace.c |   16 ++++++-----
 net/core/filter.c        |   65 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 8 deletions(-)

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