From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Mon, 29 Oct 2018 21:14:41 +0000 (-0700)
Subject: bpf_load: add map name to load_maps error message
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bce6a14996f991e570d973179b5ff57544efaa9a;p=openwrt%2Fstaging%2Fblogic.git

bpf_load: add map name to load_maps error message

To help when debugging bpf/xdp load issues, have the load_map()
error message include the number and name of the map that
failed.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---

diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index e6d7e0fe155b..5c052b9ea63f 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -284,8 +284,8 @@ static int load_maps(struct bpf_map_data *maps, int nr_maps,
 							numa_node);
 		}
 		if (map_fd[i] < 0) {
-			printf("failed to create a map: %d %s\n",
-			       errno, strerror(errno));
+			printf("failed to create map %d (%s): %d %s\n",
+			       i, maps[i].name, errno, strerror(errno));
 			return 1;
 		}
 		maps[i].fd = map_fd[i];