netdev - [PATCH bpf-next 01/10] bpf: introduce __MAX_BPF_PROG_TYPE and __MAX_BPF_MAP

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Message-ID: <43989d37be938b7d284028481e63df0a0471e29f.1567024943.git.hex@fb.com>
Date:   Wed, 28 Aug 2019 14:03:04 -0700
From:   Julia Kartseva <hex@...com>
To:     <rdna@...com>, <bpf@...r.kernel.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <netdev@...r.kernel.org>,
        <kernel-team@...com>
CC:     Julia Kartseva <hex@...com>
Subject: [PATCH bpf-next 01/10] bpf: introduce __MAX_BPF_PROG_TYPE and __MAX_BPF_MAP_TYPE enum values

Similar to __MAX_BPF_ATTACH_TYPE identifying the number of elements in
bpf_attach_type enum, add tailing enum values __MAX_BPF_PROG_TYPE
and __MAX_BPF_MAP_TYPE to simplify e.g. iteration over enums values in
the case when new values are added.

Signed-off-by: Julia Kartseva <hex@...com>
---
 include/uapi/linux/bpf.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 5d2fb183ee2d..9b681bb82211 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -136,8 +136,11 @@ enum bpf_map_type {
 	BPF_MAP_TYPE_STACK,
 	BPF_MAP_TYPE_SK_STORAGE,
 	BPF_MAP_TYPE_DEVMAP_HASH,
+	__MAX_BPF_MAP_TYPE
 };
 
+#define MAX_BPF_MAP_TYPE __MAX_BPF_MAP_TYPE
+
 /* Note that tracing related programs such as
  * BPF_PROG_TYPE_{KPROBE,TRACEPOINT,PERF_EVENT,RAW_TRACEPOINT}
  * are not subject to a stable API since kernel internal data
@@ -173,8 +176,11 @@ enum bpf_prog_type {
 	BPF_PROG_TYPE_CGROUP_SYSCTL,
 	BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
 	BPF_PROG_TYPE_CGROUP_SOCKOPT,
+	__MAX_BPF_PROG_TYPE
 };
 
+#define MAX_BPF_PROG_TYPE __MAX_BPF_PROG_TYPE
+
 enum bpf_attach_type {
 	BPF_CGROUP_INET_INGRESS,
 	BPF_CGROUP_INET_EGRESS,
-- 
2.17.1