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bpftool: Support sysctl hook

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Add support for recently added BPF_PROG_TYPE_CGROUP_SYSCTL program type
and BPF_CGROUP_SYSCTL attach type.

Example of bpftool output with sysctl program from selftests:

  # bpftool p load ./test_sysctl_prog.o /mnt/bpf/sysctl_prog type cgroup/sysctl
  # bpftool p l
  9: cgroup_sysctl  name sysctl_tcp_mem  tag 0dd05f81a8d0d52e  gpl
          loaded_at 2019-04-16T12:57:27-0700  uid 0
          xlated 1008B  jited 623B  memlock 4096B
  # bpftool c a /mnt/cgroup2/bla sysctl id 9
  # bpftool c t
  CgroupPath
  ID       AttachType      AttachFlags     Name
  /mnt/cgroup2/bla
      9        sysctl                          sysctl_tcp_mem
  # bpftool c d /mnt/cgroup2/bla sysctl id 9
  # bpftool c t
  CgroupPath
  ID       AttachType      AttachFlags     Name

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrey Ignatov
2019-04-16 13:13:47 -07:00
committed by Alexei Starovoitov
parent e1d1dc4653
commit f25377ee4f
6 changed files with 13 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
tools/bpf/bpftool/bash-completion/bpftool
View File

@@ -370,7 +370,8 @@ _bpftool()
lirc_mode2 cgroup/bind4 cgroup/bind6 \
cgroup/connect4 cgroup/connect6 \
cgroup/sendmsg4 cgroup/sendmsg6 \
cgroup/post_bind4 cgroup/post_bind6" -- \
cgroup/post_bind4 cgroup/post_bind6 \
cgroup/sysctl" -- \
"$cur" ) )
return 0
;;
@@ -619,7 +620,7 @@ _bpftool()
attach|detach)
local ATTACH_TYPES='ingress egress sock_create sock_ops \
device bind4 bind6 post_bind4 post_bind6 connect4 \
connect6 sendmsg4 sendmsg6'
connect6 sendmsg4 sendmsg6 sysctl'
local ATTACH_FLAGS='multi override'
local PROG_TYPE='id pinned tag'
case $prev in
@@ -629,7 +630,7 @@ _bpftool()
;;
ingress|egress|sock_create|sock_ops|device|bind4|bind6|\
post_bind4|post_bind6|connect4|connect6|sendmsg4|\
sendmsg6)
sendmsg6|sysctl)
COMPREPLY=( $( compgen -W "$PROG_TYPE" -- \
"$cur" ) )
return 0