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bpftool: Add support for cgroup unix socket address hooks

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Add the necessary plumbing to hook up the new cgroup unix sockaddr
hooks into bpftool.

Signed-off-by: Daan De Meyer <daan.j.demeyer@gmail.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20231011185113.140426-7-daan.j.demeyer@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Daan De Meyer 2023-10-11 20:51:08 +02:00 committed by Martin KaFai Lau
parent bf90438c78
commit 8b3cba987e
5 changed files with 38 additions and 23 deletions
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16
tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
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@ -36,11 +36,14 @@ CGROUP COMMANDS
| **cgroup_device** | **cgroup_inet4_bind** | **cgroup_inet6_bind** |
| **cgroup_inet4_post_bind** | **cgroup_inet6_post_bind** |
| **cgroup_inet4_connect** | **cgroup_inet6_connect** |
| **cgroup_inet4_getpeername** | **cgroup_inet6_getpeername** |
| **cgroup_unix_connect** | **cgroup_inet4_getpeername** |
| **cgroup_inet6_getpeername** | **cgroup_unix_getpeername** |
| **cgroup_inet4_getsockname** | **cgroup_inet6_getsockname** |
| **cgroup_udp4_sendmsg** | **cgroup_udp6_sendmsg** |
| **cgroup_unix_getsockname** | **cgroup_udp4_sendmsg** |
| **cgroup_udp6_sendmsg** | **cgroup_unix_sendmsg** |
| **cgroup_udp4_recvmsg** | **cgroup_udp6_recvmsg** |
| **cgroup_sysctl** | **cgroup_getsockopt** | **cgroup_setsockopt** |
| **cgroup_unix_recvmsg** | **cgroup_sysctl** |
| **cgroup_getsockopt** | **cgroup_setsockopt** |
| **cgroup_inet_sock_release** }
| *ATTACH_FLAGS* := { **multi** | **override** }
@ -102,21 +105,28 @@ DESCRIPTION
**post_bind6** return from bind(2) for an inet6 socket (since 4.17);
**connect4** call to connect(2) for an inet4 socket (since 4.17);
**connect6** call to connect(2) for an inet6 socket (since 4.17);
**connect_unix** call to connect(2) for a unix socket (since 6.7);
**sendmsg4** call to sendto(2), sendmsg(2), sendmmsg(2) for an
unconnected udp4 socket (since 4.18);
**sendmsg6** call to sendto(2), sendmsg(2), sendmmsg(2) for an
unconnected udp6 socket (since 4.18);
**sendmsg_unix** call to sendto(2), sendmsg(2), sendmmsg(2) for
an unconnected unix socket (since 6.7);
**recvmsg4** call to recvfrom(2), recvmsg(2), recvmmsg(2) for
an unconnected udp4 socket (since 5.2);
**recvmsg6** call to recvfrom(2), recvmsg(2), recvmmsg(2) for
an unconnected udp6 socket (since 5.2);
**recvmsg_unix** call to recvfrom(2), recvmsg(2), recvmmsg(2) for
an unconnected unix socket (since 6.7);
**sysctl** sysctl access (since 5.2);
**getsockopt** call to getsockopt (since 5.3);
**setsockopt** call to setsockopt (since 5.3);
**getpeername4** call to getpeername(2) for an inet4 socket (since 5.8);
**getpeername6** call to getpeername(2) for an inet6 socket (since 5.8);
**getpeername_unix** call to getpeername(2) for a unix socket (since 6.7);
**getsockname4** call to getsockname(2) for an inet4 socket (since 5.8);
**getsockname6** call to getsockname(2) for an inet6 socket (since 5.8).
**getsockname_unix** call to getsockname(2) for a unix socket (since 6.7);
**sock_release** closing an userspace inet socket (since 5.9).
**bpftool cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG*

8
tools/bpf/bpftool/Documentation/bpftool-prog.rst
View File

@ -47,9 +47,11 @@ PROG COMMANDS
| **cgroup/sock** | **cgroup/dev** | **lwt_in** | **lwt_out** | **lwt_xmit** |
| **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** |
| **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** |
| **cgroup/connect4** | **cgroup/connect6** | **cgroup/getpeername4** | **cgroup/getpeername6** |
| **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** |
| **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/sysctl** |
| **cgroup/connect4** | **cgroup/connect6** | **cgroup/connect_unix** |
| **cgroup/getpeername4** | **cgroup/getpeername6** | **cgroup/getpeername_unix** |
| **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/getsockname_unix** |
| **cgroup/sendmsg4** | **cgroup/sendmsg6** | **cgroup/sendmsg_unix** |
| **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/recvmsg_unix** | **cgroup/sysctl** |
| **cgroup/getsockopt** | **cgroup/setsockopt** | **cgroup/sock_release** |
| **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup**
| }

14
tools/bpf/bpftool/bash-completion/bpftool
View File

@ -480,13 +480,13 @@ _bpftool()
action tracepoint raw_tracepoint \
xdp perf_event cgroup/skb cgroup/sock \
cgroup/dev lwt_in lwt_out lwt_xmit \
lwt_seg6local sockops sk_skb sk_msg \
lirc_mode2 cgroup/bind4 cgroup/bind6 \
cgroup/connect4 cgroup/connect6 \
cgroup/getpeername4 cgroup/getpeername6 \
cgroup/getsockname4 cgroup/getsockname6 \
cgroup/sendmsg4 cgroup/sendmsg6 \
cgroup/recvmsg4 cgroup/recvmsg6 \
lwt_seg6local sockops sk_skb sk_msg lirc_mode2 \
cgroup/bind4 cgroup/bind6 \
cgroup/connect4 cgroup/connect6 cgroup/connect_unix \
cgroup/getpeername4 cgroup/getpeername6 cgroup/getpeername_unix \
cgroup/getsockname4 cgroup/getsockname6 cgroup/getsockname_unix \
cgroup/sendmsg4 cgroup/sendmsg6 cgroup/sendmsg_unix \
cgroup/recvmsg4 cgroup/recvmsg6 cgroup/recvmsg_unix \
cgroup/post_bind4 cgroup/post_bind6 \
cgroup/sysctl cgroup/getsockopt \
cgroup/setsockopt cgroup/sock_release struct_ops \

16
tools/bpf/bpftool/cgroup.c
View File

@ -28,13 +28,15 @@
" cgroup_device | cgroup_inet4_bind |\n" \
" cgroup_inet6_bind | cgroup_inet4_post_bind |\n" \
" cgroup_inet6_post_bind | cgroup_inet4_connect |\n" \
" cgroup_inet6_connect | cgroup_inet4_getpeername |\n" \
" cgroup_inet6_getpeername | cgroup_inet4_getsockname |\n" \
" cgroup_inet6_getsockname | cgroup_udp4_sendmsg |\n" \
" cgroup_udp6_sendmsg | cgroup_udp4_recvmsg |\n" \
" cgroup_udp6_recvmsg | cgroup_sysctl |\n" \
" cgroup_getsockopt | cgroup_setsockopt |\n" \
" cgroup_inet_sock_release }"
" cgroup_inet6_connect | cgroup_unix_connect |\n" \
" cgroup_inet4_getpeername | cgroup_inet6_getpeername |\n" \
" cgroup_unix_getpeername | cgroup_inet4_getsockname |\n" \
" cgroup_inet6_getsockname | cgroup_unix_getsockname |\n" \
" cgroup_udp4_sendmsg | cgroup_udp6_sendmsg |\n" \
" cgroup_unix_sendmsg | cgroup_udp4_recvmsg |\n" \
" cgroup_udp6_recvmsg | cgroup_unix_recvmsg |\n" \
" cgroup_sysctl | cgroup_getsockopt |\n" \
" cgroup_setsockopt | cgroup_inet_sock_release }"
static unsigned int query_flags;
static struct btf *btf_vmlinux;

7
tools/bpf/bpftool/prog.c
View File

@ -2475,9 +2475,10 @@ static int do_help(int argc, char **argv)
" sk_reuseport | flow_dissector | cgroup/sysctl |\n"
" cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
" cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
" cgroup/getpeername4 | cgroup/getpeername6 |\n"
" cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n"
" cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n"
" cgroup/connect_unix | cgroup/getpeername4 | cgroup/getpeername6 |\n"
" cgroup/getpeername_unix | cgroup/getsockname4 | cgroup/getsockname6 |\n"
" cgroup/getsockname_unix | cgroup/sendmsg4 | cgroup/sendmsg6 |\n"
" cgroup/sendmsg°unix | cgroup/recvmsg4 | cgroup/recvmsg6 | cgroup/recvmsg_unix |\n"
" cgroup/getsockopt | cgroup/setsockopt | cgroup/sock_release |\n"
" struct_ops | fentry | fexit | freplace | sk_lookup }\n"
" ATTACH_TYPE := { sk_msg_verdict | sk_skb_verdict | sk_skb_stream_verdict |\n"