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bpftool: Add document for net attach/detach on tcx subcommand

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This commit adds sample output for net attach/detach on
tcx subcommand.

Signed-off-by: Tao Chen <chen.dylane@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Quentin Monnet <qmo@kernel.org>
Link: https://lore.kernel.org/bpf/20240721144252.96264-1-chen.dylane@gmail.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
This commit is contained in:
Tao Chen 2024-07-21 22:42:52 +08:00 • committed by Andrii Nakryiko
parent 4f88dde0e1
commit 0d7c06125c
1 changed files with 21 additions and 1 deletions
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22
tools/bpf/bpftool/Documentation/bpftool-net.rst
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@ -29,7 +29,7 @@ NET COMMANDS
| **bpftool** **net help** | **bpftool** **net help**
| |
| *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* | **name** *PROG_NAME* } | *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* | **name** *PROG_NAME* }
| *ATTACH_TYPE* := { **xdp** | **xdpgeneric** | **xdpdrv** | **xdpoffload** } | *ATTACH_TYPE* := { **xdp** | **xdpgeneric** | **xdpdrv** | **xdpoffload** | **tcx_ingress** | **tcx_egress** }
DESCRIPTION DESCRIPTION
=========== ===========
@ -69,6 +69,8 @@ bpftool net attach *ATTACH_TYPE* *PROG* dev *NAME* [ overwrite ]
**xdpgeneric** - Generic XDP. runs at generic XDP hook when packet already enters receive path as skb; **xdpgeneric** - Generic XDP. runs at generic XDP hook when packet already enters receive path as skb;
**xdpdrv** - Native XDP. runs earliest point in driver's receive path; **xdpdrv** - Native XDP. runs earliest point in driver's receive path;
**xdpoffload** - Offload XDP. runs directly on NIC on each packet reception; **xdpoffload** - Offload XDP. runs directly on NIC on each packet reception;
**tcx_ingress** - Ingress TCX. runs on ingress net traffic;
**tcx_egress** - Egress TCX. runs on egress net traffic;
bpftool net detach *ATTACH_TYPE* dev *NAME* bpftool net detach *ATTACH_TYPE* dev *NAME*
Detach bpf program attached to network interface *NAME* with type specified Detach bpf program attached to network interface *NAME* with type specified
@ -178,3 +180,21 @@ EXAMPLES
:: ::
xdp: xdp:
|
| **# bpftool net attach tcx_ingress name tc_prog dev lo**
| **# bpftool net**
|
::
tc:
lo(1) tcx/ingress tc_prog prog_id 29
|
| **# bpftool net attach tcx_ingress name tc_prog dev lo**
| **# bpftool net detach tcx_ingress dev lo**
| **# bpftool net**
|
::
tc: