tools: sync linux/bpf.h

Synchronize changes to linux/bpf.h from
* "bpf: allow zero-initializing hash map seed"
* "bpf: move BPF_F_QUERY_EFFECTIVE after map flags"

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 10 insertions, 3 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 852dc17ab47a..05d95290b848 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -257,9 +257,6 @@ enum bpf_attach_type {
 /* Specify numa node during map creation */
 #define BPF_F_NUMA_NODE         (1U << 2)
 
-/* flags for BPF_PROG_QUERY */
-#define BPF_F_QUERY_EFFECTIVE   (1U << 0)
-
 #define BPF_OBJ_NAME_LEN 16U
 
 /* Flags for accessing BPF object */
@@ -269,6 +266,12 @@ enum bpf_attach_type {
 /* Flag for stack_map, store build_id+offset instead of pointer */
 #define BPF_F_STACK_BUILD_ID    (1U << 5)
 
+/* Zero-initialize hash function seed. This should only be used for testing. */
+#define BPF_F_ZERO_SEED         (1U << 6)
+
+/* flags for BPF_PROG_QUERY */
+#define BPF_F_QUERY_EFFECTIVE   (1U << 0)
+
 enum bpf_stack_build_id_status {
         /* user space need an empty entry to identify end of a trace */
         BPF_STACK_BUILD_ID_EMPTY = 0,
@@ -2201,6 +2204,8 @@ union bpf_attr {
  *              **CONFIG_NET** configuration option.
  *      Return
  *              Pointer to *struct bpf_sock*, or NULL in case of failure.
+ *              For sockets with reuseport option, *struct bpf_sock*
+ *              return is from reuse->socks[] using hash of the packet.
  *
  * struct bpf_sock *bpf_sk_lookup_udp(void *ctx, struct bpf_sock_tuple *tuple, u32 tuple_size, u32 netns, u64 flags)
  *      Description
@@ -2233,6 +2238,8 @@ union bpf_attr {
  *              **CONFIG_NET** configuration option.
  *      Return
  *              Pointer to *struct bpf_sock*, or NULL in case of failure.
+ *              For sockets with reuseport option, *struct bpf_sock*
+ *              return is from reuse->socks[] using hash of the packet.
  *
  * int bpf_sk_release(struct bpf_sock *sk)
  *      Description