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
|
From fbf1bad8fe8fc8a779668287abfe48af20359350 Mon Sep 17 00:00:00 2001
From: Edward Liaw <edliaw@google.com>
Date: Tue, 19 Apr 2022 22:54:43 +0000
Subject: [PATCH 05/20] psock_tpacket: version check
TX_RING support for TPACKET_V3 was added in this commit:
commit 7f953ab2ba46e8649537942c0a64668ca2ce5cc5
Author: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Date: Tue Jan 3 06:31:47 2017 -0800
af_packet: TX_RING support for TPACKET_V3
which first appeared in 4.11. Do not attempt to test TX_RING
support for TPACKET_V3 on kernels earlier than this.
(cherry picked from commit 1584e465aa445831fc93bcd64d560ab5b89cb55d)
---
tools/testing/selftests/net/psock_tpacket.c | 29 ++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c
index 4d5f317ab42c..9696c9e484d5 100644
--- a/tools/testing/selftests/net/psock_tpacket.c
+++ b/tools/testing/selftests/net/psock_tpacket.c
@@ -28,6 +28,7 @@
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/mman.h>
+#include <sys/utsname.h>
#include <linux/if_packet.h>
#include <linux/filter.h>
#include <ctype.h>
@@ -832,9 +833,34 @@ static int test_tpacket(int version, int type)
return 0;
}
+void get_kernel_version(int *version, int *patchlevel)
+{
+ int ret, sublevel;
+ struct utsname utsname;
+
+ ret = uname(&utsname);
+ if (ret) {
+ perror("uname");
+ exit(1);
+ }
+
+ ret = sscanf(utsname.release, "%d.%d.%d", version, patchlevel,
+ &sublevel);
+ if (ret < 0) {
+ perror("sscanf");
+ exit(1);
+ } else if (ret != 3) {
+ printf("Malformed kernel version %s\n", &utsname.release);
+ exit(1);
+ }
+}
+
int main(void)
{
int ret = 0;
+ int version, patchlevel;
+
+ get_kernel_version(&version, &patchlevel);
ret |= test_tpacket(TPACKET_V1, PACKET_RX_RING);
ret |= test_tpacket(TPACKET_V1, PACKET_TX_RING);
@@ -843,7 +869,8 @@ int main(void)
ret |= test_tpacket(TPACKET_V2, PACKET_TX_RING);
ret |= test_tpacket(TPACKET_V3, PACKET_RX_RING);
- ret |= test_tpacket(TPACKET_V3, PACKET_TX_RING);
+ if (version > 4 || (version == 4 && patchlevel >= 11))
+ ret |= test_tpacket(TPACKET_V3, PACKET_TX_RING);
if (ret)
return 1;
--
2.42.0.609.gbb76f46606-goog
|
