bpf, sk_msg: Add some generic helpers that may be useful from sk_msg (abe3cac8) · Commits · 戴 / test

Add these generic helpers that may be useful to use from sk_msg programs. The helpers do not depend on ctx so we can simply add them here, BPF_FUNC_perf_event_output BPF_FUNC_get_current_uid_gid BPF_FUNC_get_current_pid_tgid BPF_FUNC_get_current_cgroup_id BPF_FUNC_get_current_ancestor_cgroup_id BPF_FUNC_get_cgroup_classid Signed-off-by:

John Fastabend <john.fastabend@gmail.com> Signed-off-by:

Daniel Borkmann <daniel@iogearbox.net> Acked-by:

Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/159033903373.12355.15489763099696629346.stgit@john-Precision-5820-Tower Signed-off-by:

Alexei Starovoitov <ast@kernel.org>

net/core/filter.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -6443,6 +6443,22 @@ sk_msg_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
		return &bpf_msg_push_data_proto;
		case BPF_FUNC_msg_pop_data:
		return &bpf_msg_pop_data_proto;
		case BPF_FUNC_perf_event_output:
		return &bpf_event_output_data_proto;
		case BPF_FUNC_get_current_uid_gid:
		return &bpf_get_current_uid_gid_proto;
		case BPF_FUNC_get_current_pid_tgid:
		return &bpf_get_current_pid_tgid_proto;
		#ifdef CONFIG_CGROUPS
		case BPF_FUNC_get_current_cgroup_id:
		return &bpf_get_current_cgroup_id_proto;
		case BPF_FUNC_get_current_ancestor_cgroup_id:
		return &bpf_get_current_ancestor_cgroup_id_proto;
		#endif
		#ifdef CONFIG_CGROUP_NET_CLASSID
		case BPF_FUNC_get_cgroup_classid:
		return &bpf_get_cgroup_classid_curr_proto;
		#endif
		default:
		return bpf_base_func_proto(func_id);
		}

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