netdev - [bpf-next, v4 3/5] bpf: support flow dissector in libbpf and bpftool

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Message-Id: <20180914144622.16436-4-peterpenkov96@gmail.com>
Date:   Fri, 14 Sep 2018 07:46:20 -0700
From:   Petar Penkov <peterpenkov96@...il.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, ast@...nel.org, daniel@...earbox.net,
        simon.horman@...ronome.com, ecree@...arflare.com,
        songliubraving@...com, tom@...bertland.com,
        Petar Penkov <ppenkov@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>
Subject: [bpf-next, v4 3/5] bpf: support flow dissector in libbpf and bpftool

From: Petar Penkov <ppenkov@...gle.com>

This patch extends libbpf and bpftool to work with programs of type
BPF_PROG_TYPE_FLOW_DISSECTOR.

Signed-off-by: Petar Penkov <ppenkov@...gle.com>
Signed-off-by: Willem de Bruijn <willemb@...gle.com>
---
 tools/bpf/bpftool/prog.c | 1 +
 tools/lib/bpf/libbpf.c   | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index dce960d22106..b1cd3bc8db70 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -74,6 +74,7 @@ static const char * const prog_type_name[] = {
 	[BPF_PROG_TYPE_RAW_TRACEPOINT]	= "raw_tracepoint",
 	[BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
 	[BPF_PROG_TYPE_LIRC_MODE2]	= "lirc_mode2",
+	[BPF_PROG_TYPE_FLOW_DISSECTOR]	= "flow_dissector",
 };
 
 static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 8476da7f2720..9ca8e0e624d8 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1502,6 +1502,7 @@ static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
 	case BPF_PROG_TYPE_CGROUP_SOCK_ADDR:
 	case BPF_PROG_TYPE_LIRC_MODE2:
 	case BPF_PROG_TYPE_SK_REUSEPORT:
+	case BPF_PROG_TYPE_FLOW_DISSECTOR:
 		return false;
 	case BPF_PROG_TYPE_UNSPEC:
 	case BPF_PROG_TYPE_KPROBE:
@@ -2121,6 +2122,7 @@ static const struct {
 	BPF_PROG_SEC("sk_skb",		BPF_PROG_TYPE_SK_SKB),
 	BPF_PROG_SEC("sk_msg",		BPF_PROG_TYPE_SK_MSG),
 	BPF_PROG_SEC("lirc_mode2",	BPF_PROG_TYPE_LIRC_MODE2),
+	BPF_PROG_SEC("flow_dissector",	BPF_PROG_TYPE_FLOW_DISSECTOR),
 	BPF_SA_PROG_SEC("cgroup/bind4",	BPF_CGROUP_INET4_BIND),
 	BPF_SA_PROG_SEC("cgroup/bind6",	BPF_CGROUP_INET6_BIND),
 	BPF_SA_PROG_SEC("cgroup/connect4", BPF_CGROUP_INET4_CONNECT),
-- 
2.19.0.397.gdd90340f6a-goog