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-rw-r--r--tools/include/uapi/linux/bpf.h14
1 files changed, 8 insertions, 6 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 8ff155ffcd84..e99e3e6f8b37 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -750,6 +750,8 @@ struct bpf_map_info {
/* User bpf_sock_ops struct to access socket values and specify request ops
* and their replies.
+ * Some of this fields are in network (bigendian) byte order and may need
+ * to be converted before use (bpf_ntohl() defined in samples/bpf/bpf_endian.h).
* New fields can only be added at the end of this structure
*/
struct bpf_sock_ops {
@@ -759,12 +761,12 @@ struct bpf_sock_ops {
__u32 replylong[4];
};
__u32 family;
- __u32 remote_ip4;
- __u32 local_ip4;
- __u32 remote_ip6[4];
- __u32 local_ip6[4];
- __u32 remote_port;
- __u32 local_port;
+ __u32 remote_ip4; /* Stored in network byte order */
+ __u32 local_ip4; /* Stored in network byte order */
+ __u32 remote_ip6[4]; /* Stored in network byte order */
+ __u32 local_ip6[4]; /* Stored in network byte order */
+ __u32 remote_port; /* Stored in network byte order */
+ __u32 local_port; /* stored in host byte order */
};
/* List of known BPF sock_ops operators.