bpf, bpftool: enable recvmsg attach types

Trivial patch to bpftool in order to complete enabling attaching programs
to BPF_CGROUP_UDP{4,6}_RECVMSG.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
index ac26876..e744b3e 100644 (file)
--- a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst
@@ -29,7 +29,7 @@ CGROUP COMMANDS
 |      *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* }
 |      *ATTACH_TYPE* := { **ingress** | **egress** | **sock_create** | **sock_ops** | **device** |
 |              **bind4** | **bind6** | **post_bind4** | **post_bind6** | **connect4** | **connect6** |
-|              **sendmsg4** | **sendmsg6** | **sysctl** }
+|              **sendmsg4** | **sendmsg6** | **recvmsg4** | **recvmsg6** | **sysctl** }
 |      *ATTACH_FLAGS* := { **multi** | **override** }
 
 DESCRIPTION
@@ -86,6 +86,10 @@ DESCRIPTION
                  unconnected udp4 socket (since 4.18);
                  **sendmsg6** call to sendto(2), sendmsg(2), sendmmsg(2) for an
                  unconnected udp6 socket (since 4.18);
+                 **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);
                  **sysctl** sysctl access (since 5.2).
 
        **bpftool cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG*

diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index e811854..018ecef 100644 (file)
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -40,7 +40,7 @@ PROG COMMANDS
 |              **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** |
 |              **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** |
 |              **cgroup/connect4** | **cgroup/connect6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** |
-|              **cgroup/sysctl**
+|              **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/sysctl**
 |      }
 |       *ATTACH_TYPE* := {
 |              **msg_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector**

diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool
index 50e402a..4300adf 100644 (file)
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -371,6 +371,7 @@ _bpftool()
                                 lirc_mode2 cgroup/bind4 cgroup/bind6 \
                                 cgroup/connect4 cgroup/connect6 \
                                 cgroup/sendmsg4 cgroup/sendmsg6 \
+                                cgroup/recvmsg4 cgroup/recvmsg6 \
                                 cgroup/post_bind4 cgroup/post_bind6 \
                                 cgroup/sysctl" -- \
                                                    "$cur" ) )
@@ -666,7 +667,7 @@ _bpftool()
                 attach|detach)
                     local ATTACH_TYPES='ingress egress sock_create sock_ops \
                         device bind4 bind6 post_bind4 post_bind6 connect4 \
-                        connect6 sendmsg4 sendmsg6 sysctl'
+                        connect6 sendmsg4 sendmsg6 recvmsg4 recvmsg6 sysctl'
                     local ATTACH_FLAGS='multi override'
                     local PROG_TYPE='id pinned tag'
                     case $prev in
@@ -676,7 +677,7 @@ _bpftool()
                             ;;
                         ingress|egress|sock_create|sock_ops|device|bind4|bind6|\
                         post_bind4|post_bind6|connect4|connect6|sendmsg4|\
-                        sendmsg6|sysctl)
+                        sendmsg6|recvmsg4|recvmsg6|sysctl)
                             COMPREPLY=( $( compgen -W "$PROG_TYPE" -- \
                                 "$cur" ) )
                             return 0

diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c
index 7e22f11..73ec8ea 100644 (file)
--- a/tools/bpf/bpftool/cgroup.c
+++ b/tools/bpf/bpftool/cgroup.c
@@ -25,7 +25,8 @@
        "       ATTACH_TYPE := { ingress | egress | sock_create |\n"           \
        "                        sock_ops | device | bind4 | bind6 |\n"        \
        "                        post_bind4 | post_bind6 | connect4 |\n"       \
-       "                        connect6 | sendmsg4 | sendmsg6 | sysctl }"
+       "                        connect6 | sendmsg4 | sendmsg6 |\n"           \
+       "                        recvmsg4 | recvmsg6 | sysctl }"
 
 static const char * const attach_type_strings[] = {
        [BPF_CGROUP_INET_INGRESS] = "ingress",
@@ -42,6 +43,8 @@ static const char * const attach_type_strings[] = {
        [BPF_CGROUP_UDP4_SENDMSG] = "sendmsg4",
        [BPF_CGROUP_UDP6_SENDMSG] = "sendmsg6",
        [BPF_CGROUP_SYSCTL] = "sysctl",
+       [BPF_CGROUP_UDP4_RECVMSG] = "recvmsg4",
+       [BPF_CGROUP_UDP6_RECVMSG] = "recvmsg6",
        [__MAX_BPF_ATTACH_TYPE] = NULL,
 };
 

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 26336ba..7a4e21a 100644 (file)
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1063,7 +1063,8 @@ 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/sendmsg4 | cgroup/sendmsg6 }\n"
+               "                 cgroup/sendmsg4 | cgroup/sendmsg6 | cgroup/recvmsg4 |\n"
+               "                 cgroup/recvmsg6 }\n"
                "       ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
                "                        flow_dissector }\n"
                "       " HELP_SPEC_OPTIONS "\n"