[PATCH net-next] samples/bpf: Convert magic numbers to names in multi-prog cgroup test case

[David Ahern]

Attach flag 1 == BPF_F_ALLOW_OVERRIDE; attach flag 2 == BPF_F_ALLOW_MULTI.
Update the calls to bpf_prog_attach() in test_cgrp2_attach2.c to use the
names over the magic numbers.

Fixes: 39323e788cb67 ("samples/bpf: add multi-prog cgroup test case")
Signed-off-by: David Ahern <dsah...@gmail.com>
---
 samples/bpf/test_cgrp2_attach2.c | 36 ++++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 12 deletions(-)

diff --git a/samples/bpf/test_cgrp2_attach2.c b/samples/bpf/test_cgrp2_attach2.c
index 3e8232cc04a8..1af412ec6007 100644
--- a/samples/bpf/test_cgrp2_attach2.c
+++ b/samples/bpf/test_cgrp2_attach2.c
@@ -78,7 +78,8 @@ static int test_foo_bar(void)
        if (join_cgroup(FOO))
                goto err;
 
-       if (bpf_prog_attach(drop_prog, foo, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(drop_prog, foo, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to /foo");
                goto err;
        }
@@ -97,7 +98,8 @@ static int test_foo_bar(void)
        printf("Attached DROP prog. This ping in cgroup /foo/bar should 
fail...\n");
        assert(system(PING_CMD) != 0);
 
-       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to /foo/bar");
                goto err;
        }
@@ -114,7 +116,8 @@ static int test_foo_bar(void)
               "This ping in cgroup /foo/bar should fail...\n");
        assert(system(PING_CMD) != 0);
 
-       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to /foo/bar");
                goto err;
        }
@@ -128,7 +131,8 @@ static int test_foo_bar(void)
               "This ping in cgroup /foo/bar should pass...\n");
        assert(system(PING_CMD) == 0);
 
-       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to /foo/bar");
                goto err;
        }
@@ -161,13 +165,15 @@ static int test_foo_bar(void)
                goto err;
        }
 
-       if (!bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (!bpf_prog_attach(allow_prog, bar, BPF_CGROUP_INET_EGRESS,
+                            BPF_F_ALLOW_OVERRIDE)) {
                errno = 0;
                log_err("Unexpected success attaching overridable prog to 
/foo/bar");
                goto err;
        }
 
-       if (!bpf_prog_attach(allow_prog, foo, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (!bpf_prog_attach(allow_prog, foo, BPF_CGROUP_INET_EGRESS,
+                            BPF_F_ALLOW_OVERRIDE)) {
                errno = 0;
                log_err("Unexpected success attaching overridable prog to 
/foo");
                goto err;
@@ -273,27 +279,33 @@ static int test_multiprog(void)
        if (join_cgroup("/cg1/cg2/cg3/cg4/cg5"))
                goto err;
 
-       if (bpf_prog_attach(allow_prog[0], cg1, BPF_CGROUP_INET_EGRESS, 2)) {
+       if (bpf_prog_attach(allow_prog[0], cg1, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_MULTI)) {
                log_err("Attaching prog to cg1");
                goto err;
        }
-       if (!bpf_prog_attach(allow_prog[0], cg1, BPF_CGROUP_INET_EGRESS, 2)) {
+       if (!bpf_prog_attach(allow_prog[0], cg1, BPF_CGROUP_INET_EGRESS,
+                            BPF_F_ALLOW_MULTI)) {
                log_err("Unexpected success attaching the same prog to cg1");
                goto err;
        }
-       if (bpf_prog_attach(allow_prog[1], cg1, BPF_CGROUP_INET_EGRESS, 2)) {
+       if (bpf_prog_attach(allow_prog[1], cg1, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_MULTI)) {
                log_err("Attaching prog2 to cg1");
                goto err;
        }
-       if (bpf_prog_attach(allow_prog[2], cg2, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(allow_prog[2], cg2, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to cg2");
                goto err;
        }
-       if (bpf_prog_attach(allow_prog[3], cg3, BPF_CGROUP_INET_EGRESS, 2)) {
+       if (bpf_prog_attach(allow_prog[3], cg3, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_MULTI)) {
                log_err("Attaching prog to cg3");
                goto err;
        }
-       if (bpf_prog_attach(allow_prog[4], cg4, BPF_CGROUP_INET_EGRESS, 1)) {
+       if (bpf_prog_attach(allow_prog[4], cg4, BPF_CGROUP_INET_EGRESS,
+                           BPF_F_ALLOW_OVERRIDE)) {
                log_err("Attaching prog to cg4");
                goto err;
        }
-- 
2.14.1