[PATCH v5 bpf-next 11/11] samples/bpf: add XDP egress support to xdp1

[David Ahern]

From: David Ahern <dah...@digitalocean.com>

xdp1 and xdp2 now accept -E flag to set XDP program in the egress
path.

Signed-off-by: Prashant Bhole <prashantbhole.li...@gmail.com>
Signed-off-by: David Ahern <dah...@digitalocean.com>
---
 samples/bpf/xdp1_user.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index c447ad9e3a1d..bb104f4d8c5e 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -73,7 +73,8 @@ static void usage(const char *prog)
                "OPTS:\n"
                "    -S    use skb-mode\n"
                "    -N    enforce native mode\n"
-               "    -F    force loading prog\n",
+               "    -F    force loading prog\n"
+               "    -E    egress path program\n",
                prog);
 }
 
@@ -85,7 +86,7 @@ int main(int argc, char **argv)
        };
        struct bpf_prog_info info = {};
        __u32 info_len = sizeof(info);
-       const char *optstr = "FSN";
+       const char *optstr = "FSNE";
        int prog_fd, map_fd, opt;
        struct bpf_object *obj;
        struct bpf_map *map;
@@ -103,13 +104,17 @@ int main(int argc, char **argv)
                case 'F':
                        xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
                        break;
+               case 'E':
+                       xdp_flags |= XDP_FLAGS_EGRESS_MODE;
+                       prog_load_attr.expected_attach_type = BPF_XDP_EGRESS;
+                       break;
                default:
                        usage(basename(argv[0]));
                        return 1;
                }
        }
 
-       if (!(xdp_flags & XDP_FLAGS_SKB_MODE))
+       if (!(xdp_flags & (XDP_FLAGS_SKB_MODE | XDP_FLAGS_EGRESS_MODE)))
                xdp_flags |= XDP_FLAGS_DRV_MODE;
 
        if (optind == argc) {
-- 
2.21.1 (Apple Git-122.3)