1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
// SPDX-License-Identifier: GPL-2.0
#include <uapi/linux/bpf.h>
#include <linux/if_link.h>
#include <test_progs.h>
#include "test_xdp_with_cpumap_frags_helpers.skel.h"
#include "test_xdp_with_cpumap_helpers.skel.h"
#define IFINDEX_LO 1
static void test_xdp_with_cpumap_helpers(void)
{
struct test_xdp_with_cpumap_helpers *skel;
struct bpf_prog_info info = {};
__u32 len = sizeof(info);
struct bpf_cpumap_val val = {
.qsize = 192,
};
int err, prog_fd, map_fd;
__u32 idx = 0;
skel = test_xdp_with_cpumap_helpers__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load"))
return;
prog_fd = bpf_program__fd(skel->progs.xdp_redir_prog);
err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL);
if (!ASSERT_OK(err, "Generic attach of program with 8-byte CPUMAP"))
goto out_close;
err = bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL);
ASSERT_OK(err, "XDP program detach");
prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm);
map_fd = bpf_map__fd(skel->maps.cpu_map);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &len);
if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
goto out_close;
val.bpf_prog.fd = prog_fd;
err = bpf_map_update_elem(map_fd, &idx, &val, 0);
ASSERT_OK(err, "Add program to cpumap entry");
err = bpf_map_lookup_elem(map_fd, &idx, &val);
ASSERT_OK(err, "Read cpumap entry");
ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id");
/* can not attach BPF_XDP_CPUMAP program to a device */
err = bpf_xdp_attach(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE, NULL);
if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_CPUMAP program"))
bpf_xdp_detach(IFINDEX_LO, XDP_FLAGS_SKB_MODE, NULL);
val.qsize = 192;
val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog);
err = bpf_map_update_elem(map_fd, &idx, &val, 0);
ASSERT_NEQ(err, 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry");
/* Try to attach BPF_XDP program with frags to cpumap when we have
* already loaded a BPF_XDP program on the map
*/
idx = 1;
val.qsize = 192;
val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags);
err = bpf_map_update_elem(map_fd, &idx, &val, 0);
ASSERT_NEQ(err, 0, "Add BPF_XDP program with frags to cpumap entry");
out_close:
test_xdp_with_cpumap_helpers__destroy(skel);
}
static void test_xdp_with_cpumap_frags_helpers(void)
{
struct test_xdp_with_cpumap_frags_helpers *skel;
struct bpf_prog_info info = {};
__u32 len = sizeof(info);
struct bpf_cpumap_val val = {
.qsize = 192,
};
int err, frags_prog_fd, map_fd;
__u32 idx = 0;
skel = test_xdp_with_cpumap_frags_helpers__open_and_load();
if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load"))
return;
frags_prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm_frags);
map_fd = bpf_map__fd(skel->maps.cpu_map);
err = bpf_obj_get_info_by_fd(frags_prog_fd, &info, &len);
if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
goto out_close;
val.bpf_prog.fd = frags_prog_fd;
err = bpf_map_update_elem(map_fd, &idx, &val, 0);
ASSERT_OK(err, "Add program to cpumap entry");
err = bpf_map_lookup_elem(map_fd, &idx, &val);
ASSERT_OK(err, "Read cpumap entry");
ASSERT_EQ(info.id, val.bpf_prog.id,
"Match program id to cpumap entry prog_id");
/* Try to attach BPF_XDP program to cpumap when we have
* already loaded a BPF_XDP program with frags on the map
*/
idx = 1;
val.qsize = 192;
val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_cm);
err = bpf_map_update_elem(map_fd, &idx, &val, 0);
ASSERT_NEQ(err, 0, "Add BPF_XDP program to cpumap entry");
out_close:
test_xdp_with_cpumap_frags_helpers__destroy(skel);
}
void serial_test_xdp_cpumap_attach(void)
{
if (test__start_subtest("CPUMAP with programs in entries"))
test_xdp_with_cpumap_helpers();
if (test__start_subtest("CPUMAP with frags programs in entries"))
test_xdp_with_cpumap_frags_helpers();
}
|
