netdev - [PATCH bpf-next v2 07/13] tools/bpf: add new fields for program load in lib/bpf

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Message-ID: <20181017072344.2767700-3-yhs@fb.com>
Date:   Wed, 17 Oct 2018 00:23:42 -0700
From:   Yonghong Song <yhs@...com>
To:     <ast@...com>, <kafai@...com>, <daniel@...earbox.net>,
        <netdev@...r.kernel.org>
CC:     <kernel-team@...com>
Subject: [PATCH bpf-next v2 07/13] tools/bpf: add new fields for program load in lib/bpf

The new fields are added for program load in lib/bpf so
application uses api bpf_load_program_xattr() is able
to load program with btf and func_info data.

This functionality will be used in next patch
by bpf selftest test_btf.

Signed-off-by: Yonghong Song <yhs@...com>
---
 tools/lib/bpf/bpf.c | 3 +++
 tools/lib/bpf/bpf.h | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index d70a255cb05e..d8d48ab34220 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -196,6 +196,9 @@ int bpf_load_program_xattr(const struct bpf_load_program_attr *load_attr,
 	attr.log_level = 0;
 	attr.kern_version = load_attr->kern_version;
 	attr.prog_ifindex = load_attr->prog_ifindex;
+	attr.prog_btf_fd = load_attr->prog_btf_fd;
+	attr.func_info_len = load_attr->func_info_len;
+	attr.func_info = ptr_to_u64(load_attr->func_info);
 	memcpy(attr.prog_name, load_attr->name,
 	       min(name_len, BPF_OBJ_NAME_LEN - 1));
 
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 258c3c178333..d2bdaffd7712 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -74,6 +74,9 @@ struct bpf_load_program_attr {
 	const char *license;
 	__u32 kern_version;
 	__u32 prog_ifindex;
+	__u32 prog_btf_fd;
+	__u32 func_info_len;
+	const struct bpf_func_info *func_info;
 };
 
 /* Flags to direct loading requirements */
-- 
2.17.1