diff options
| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-02-28 06:04:11 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-03-01 02:53:45 +0300 |
| commit | ea9b6362018358a46008a8af339178469a4efe13 (patch) | |
| tree | 834a1c32f0d0f1f37b2203dcc2d671da68cf6ca9 /samples/bpf/tcp_bpf.readme | |
| parent | 5c3cf87d477a461274452cb46f7654c5b6ae6294 (diff) | |
| download | linux-ea9b6362018358a46008a8af339178469a4efe13.tar.xz | |
samples: bpf: remove load_sock_ops in favour of bpftool
bpftool can do all the things load_sock_ops used to do, and more.
Point users to bpftool instead of maintaining this sample utility.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'samples/bpf/tcp_bpf.readme')
| -rw-r--r-- | samples/bpf/tcp_bpf.readme | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/samples/bpf/tcp_bpf.readme b/samples/bpf/tcp_bpf.readme index 831fb601e3c9..fee746621aec 100644 --- a/samples/bpf/tcp_bpf.readme +++ b/samples/bpf/tcp_bpf.readme @@ -8,14 +8,16 @@ a cgroupv2 and attach a bash shell to the group. bash echo $$ >> /tmp/cgroupv2/foo/cgroup.procs -Anything that runs under this shell belongs to the foo cgroupv2 To load +Anything that runs under this shell belongs to the foo cgroupv2. To load (attach) one of the tcp_*_kern.o programs: - ./load_sock_ops -l /tmp/cgroupv2/foo tcp_basertt_kern.o + bpftool prog load tcp_basertt_kern.o /sys/fs/bpf/tcp_prog + bpftool cgroup attach /tmp/cgroupv2/foo sock_ops pinned /sys/fs/bpf/tcp_prog + bpftool prog tracelog -If the "-l" flag is used, the load_sock_ops program will continue to run -printing the BPF log buffer. The tcp_*_kern.o programs use special print -functions to print logging information (if enabled by the ifdef). +"bpftool prog tracelog" will continue to run printing the BPF log buffer. +The tcp_*_kern.o programs use special print functions to print logging +information (if enabled by the ifdef). If using netperf/netserver to create traffic, you need to run them under the cgroupv2 to which the BPF programs are attached (i.e. under bash shell @@ -23,4 +25,4 @@ attached to the cgroupv2). To remove (unattach) a socket_ops BPF program from a cgroupv2: - ./load_sock_ops -r /tmp/cgroupv2/foo + bpftool cgroup attach /tmp/cgroupv2/foo sock_ops pinned /sys/fs/bpf/tcp_prog |