[v2,bpf-next,08/21] libbpf: Support sysctl hook

Message ID	18239b9f9a93233b129be5145c1a2e80751c25fa.1553560621.git.rdna@fb.com
State	Superseded
Delegated to:	BPF Maintainers
Headers	show Return-Path: <netdev-owner@vger.kernel.org> Smtp-Origin-Hostprefix: dev From: Andrey Ignatov <rdna@fb.com> Smtp-Origin-Hostname: dev082.prn2.facebook.com To: <netdev@vger.kernel.org> CC: Andrey Ignatov <rdna@fb.com>, <ast@kernel.org>, <daniel@iogearbox.net>, <guro@fb.com>, <kernel-team@fb.com>, Luis Chamberlain <mcgrof@kernel.org>, Kees Cook <keescook@chromium.org>, Alexey Dobriyan <adobriyan@gmail.com>, <linux-kernel@vger.kernel.org>, <linux-fsdevel@vger.kernel.org> Smtp-Origin-Cluster: prn2c23 Subject: [PATCH v2 bpf-next 08/21] libbpf: Support sysctl hook Date: Mon, 25 Mar 2019 17:43:34 -0700 Message-ID: <18239b9f9a93233b129be5145c1a2e80751c25fa.1553560621.git.rdna@fb.com> In-Reply-To: <cover.1553560620.git.rdna@fb.com> References: <cover.1553560620.git.rdna@fb.com> MIME-Version: 1.0 Content-Type: text/plain Sender: netdev-owner@vger.kernel.org Precedence: bulk
Series	bpf: Sysctl hook \| expand [v2,bpf-next,00/21] bpf: Sysctl hook [v2,bpf-next,01/21] bpf: Add base proto function for cgroup-bpf programs [v2,bpf-next,02/21] bpf: Sysctl hook [v2,bpf-next,03/21] bpf: Introduce bpf_sysctl_get_name helper [v2,bpf-next,04/21] bpf: Introduce bpf_sysctl_get_current_value helper [v2,bpf-next,05/21] bpf: Introduce bpf_sysctl_{get,set}_new_value helpers [v2,bpf-next,06/21] bpf: Add file_pos field to bpf_sysctl ctx [v2,bpf-next,07/21] bpf: Sync bpf.h to tools/ [v2,bpf-next,08/21] libbpf: Support sysctl hook [v2,bpf-next,09/21] selftests/bpf: Test sysctl section name [v2,bpf-next,10/21] selftests/bpf: Test BPF_CGROUP_SYSCTL [v2,bpf-next,11/21] selftests/bpf: Test bpf_sysctl_get_name helper [v2,bpf-next,12/21] selftests/bpf: Test sysctl_get_current_value helper [v2,bpf-next,13/21] selftests/bpf: Test bpf_sysctl_{get,set}_new_value helpers [v2,bpf-next,14/21] selftests/bpf: Test file_pos field in bpf_sysctl ctx [v2,bpf-next,15/21] bpf: Introduce ARG_PTR_TO_{INT,LONG} arg types [v2,bpf-next,16/21] bpf: Introduce bpf_strtol and bpf_strtoul helpers [v2,bpf-next,17/21] bpf: Sync bpf.h to tools/ [v2,bpf-next,18/21] selftests/bpf: Add sysctl and strtoX helpers to bpf_helpers.h [v2,bpf-next,19/21] selftests/bpf: Test ARG_PTR_TO_LONG arg type [v2,bpf-next,20/21] selftests/bpf: Test bpf_strtol and bpf_strtoul helpers [v2,bpf-next,21/21] selftests/bpf: C based test for sysctl and strtoX

Message ID

18239b9f9a93233b129be5145c1a2e80751c25fa.1553560621.git.rdna@fb.com

State

Superseded

Delegated to:

BPF Maintainers

Headers

Smtp-Origin-Hostprefix: dev
From: Andrey Ignatov <rdna@fb.com>
Smtp-Origin-Hostname: dev082.prn2.facebook.com
To: <netdev@vger.kernel.org>
CC: Andrey Ignatov <rdna@fb.com>, <ast@kernel.org>,
	<daniel@iogearbox.net>, <guro@fb.com>, <kernel-team@fb.com>,
	Luis Chamberlain <mcgrof@kernel.org>, Kees Cook <keescook@chromium.org>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	<linux-kernel@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>
Smtp-Origin-Cluster: prn2c23
Subject: [PATCH v2 bpf-next 08/21] libbpf: Support sysctl hook
Date: Mon, 25 Mar 2019 17:43:34 -0700
Message-ID: <18239b9f9a93233b129be5145c1a2e80751c25fa.1553560621.git.rdna@fb.com>
In-Reply-To: <cover.1553560620.git.rdna@fb.com>
References: <cover.1553560620.git.rdna@fb.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: netdev-owner@vger.kernel.org
Precedence: bulk

Series

bpf: Sysctl hook | expand

Commit Message

Andrey Ignatov March 26, 2019, 12:43 a.m. UTC

Support BPF_PROG_TYPE_CGROUP_SYSCTL program in libbpf: identifying
program and attach types by section name, probe.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
---
 tools/lib/bpf/libbpf.c        | 3 +++
 tools/lib/bpf/libbpf_probes.c | 1 +
 2 files changed, 4 insertions(+)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 5e977d2688da..70900012eb8c 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1689,6 +1689,7 @@  static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
 	case BPF_PROG_TYPE_TRACEPOINT:
 	case BPF_PROG_TYPE_RAW_TRACEPOINT:
 	case BPF_PROG_TYPE_PERF_EVENT:
+	case BPF_PROG_TYPE_CGROUP_SYSCTL:
 		return false;
 	case BPF_PROG_TYPE_KPROBE:
 	default:
@@ -2626,6 +2627,8 @@  static const struct {
 						BPF_CGROUP_UDP4_SENDMSG),
 	BPF_EAPROG_SEC("cgroup/sendmsg6",	BPF_PROG_TYPE_CGROUP_SOCK_ADDR,
 						BPF_CGROUP_UDP6_SENDMSG),
+	BPF_EAPROG_SEC("cgroup/sysctl",		BPF_PROG_TYPE_CGROUP_SYSCTL,
+						BPF_CGROUP_SYSCTL),
 };
 
 #undef BPF_PROG_SEC_IMPL
diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index 8c3a1c04dcb2..0f25541632e3 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -97,6 +97,7 @@  probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
 	case BPF_PROG_TYPE_LIRC_MODE2:
 	case BPF_PROG_TYPE_SK_REUSEPORT:
 	case BPF_PROG_TYPE_FLOW_DISSECTOR:
+	case BPF_PROG_TYPE_CGROUP_SYSCTL:
 	default:
 		break;
 	}

[v2,bpf-next,08/21] libbpf: Support sysctl hook

Commit Message

Patch