netdev - [PATCH bpf-next 1/3] samples/bpf/xdpsock_user.c: Get rid of bpf_prog_load

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Message-Id: <20220607084003.898387-2-liuhangbin@gmail.com>
Date:   Tue,  7 Jun 2022 16:40:01 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     netdev@...r.kernel.org
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        John Fastabend <john.fastabend@...il.com>,
        Björn Töpel <bjorn@...nel.org>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>, bpf@...r.kernel.org,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH bpf-next 1/3] samples/bpf/xdpsock_user.c: Get rid of bpf_prog_load_xattr()

Commit 1e4edb6d8c4f ("samples/bpf: Get rid of bpf_prog_load_xattr()
use") tried to remove all the deprecated bpf_prog_load_xattr() API..
But xdpsock_user.c was left as it set GCC diagnostic ignored
"-Wdeprecated-declarations".

Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 samples/bpf/xdpsock_user.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index be7d2572e3e6..3ea46c300df2 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -1742,17 +1742,22 @@ static void l2fwd_all(void)
 
 static void load_xdp_program(char **argv, struct bpf_object **obj)
 {
-	struct bpf_prog_load_attr prog_load_attr = {
-		.prog_type      = BPF_PROG_TYPE_XDP,
-	};
+	struct bpf_program *prog;
 	char xdp_filename[256];
 	int prog_fd;
 
 	snprintf(xdp_filename, sizeof(xdp_filename), "%s_kern.o", argv[0]);
-	prog_load_attr.file = xdp_filename;
+	*obj = bpf_object__open_file(xdp_filename, NULL);
+	if (libbpf_get_error(*obj))
+		exit(EXIT_FAILURE);
 
-	if (bpf_prog_load_xattr(&prog_load_attr, obj, &prog_fd))
+	prog = bpf_object__next_program(*obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
+	if (bpf_object__load(*obj))
 		exit(EXIT_FAILURE);
+
+	prog_fd = bpf_program__fd(prog);
 	if (prog_fd < 0) {
 		fprintf(stderr, "ERROR: no program found: %s\n",
 			strerror(prog_fd));
@@ -1885,10 +1890,10 @@ int main(int argc, char **argv)
 {
 	struct __user_cap_header_struct hdr = { _LINUX_CAPABILITY_VERSION_3, 0 };
 	struct __user_cap_data_struct data[2] = { { 0 } };
+	struct bpf_object *obj = NULL;
 	bool rx = false, tx = false;
 	struct sched_param schparam;
 	struct xsk_umem_info *umem;
-	struct bpf_object *obj;
 	int xsks_map_fd = 0;
 	pthread_t pt;
 	int i, ret;
-- 
2.35.1