bpf: Sync bpf.h uapi to tools/

This patch sync include/uapi/linux/bpf.h to
tools/include/uapi/linux/

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 36 insertions, 1 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index dd5758dc35d3..3102a2a23c31 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -126,6 +126,7 @@ enum bpf_map_type {
         BPF_MAP_TYPE_XSKMAP,
         BPF_MAP_TYPE_SOCKHASH,
         BPF_MAP_TYPE_CGROUP_STORAGE,
+        BPF_MAP_TYPE_REUSEPORT_SOCKARRAY,
 };
 
 enum bpf_prog_type {
@@ -150,6 +151,7 @@ enum bpf_prog_type {
         BPF_PROG_TYPE_CGROUP_SOCK_ADDR,
         BPF_PROG_TYPE_LWT_SEG6LOCAL,
         BPF_PROG_TYPE_LIRC_MODE2,
+        BPF_PROG_TYPE_SK_REUSEPORT,
 };
 
 enum bpf_attach_type {
@@ -2113,6 +2115,14 @@ union bpf_attr {
  *              the shared data.
  *      Return
  *              Pointer to the local storage area.
+ *
+ * int bpf_sk_select_reuseport(struct sk_reuseport_md *reuse, struct bpf_map *map, void *key, u64 flags)
+ *      Description
+ *              Select a SO_REUSEPORT sk from a BPF_MAP_TYPE_REUSEPORT_ARRAY map
+ *              It checks the selected sk is matching the incoming
+ *              request in the skb.
+ *      Return
+ *              0 on success, or a negative error in case of failure.
  */
 #define __BPF_FUNC_MAPPER(FN)           \
         FN(unspec),                     \
@@ -2196,7 +2206,8 @@ union bpf_attr {
         FN(rc_keydown),                 \
         FN(skb_cgroup_id),              \
         FN(get_current_cgroup_id),      \
-        FN(get_local_storage),
+        FN(get_local_storage),          \
+        FN(sk_select_reuseport),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
@@ -2413,6 +2424,30 @@ struct sk_msg_md {
         __u32 local_port;       /* stored in host byte order */
 };
 
+struct sk_reuseport_md {
+        /*
+         * Start of directly accessible data. It begins from
+         * the tcp/udp header.
+         */
+        void *data;
+        void *data_end;         /* End of directly accessible data */
+        /*
+         * Total length of packet (starting from the tcp/udp header).
+         * Note that the directly accessible bytes (data_end - data)
+         * could be less than this "len".  Those bytes could be
+         * indirectly read by a helper "bpf_skb_load_bytes()".
+         */
+        __u32 len;
+        /*
+         * Eth protocol in the mac header (network byte order). e.g.
+         * ETH_P_IP(0x0800) and ETH_P_IPV6(0x86DD)
+         */
+        __u32 eth_protocol;
+        __u32 ip_protocol;      /* IP protocol. e.g. IPPROTO_TCP, IPPROTO_UDP */
+        __u32 bind_inany;       /* Is sock bound to an INANY address? */
+        __u32 hash;             /* A hash of the packet 4 tuples */
+};
+
 #define BPF_TAG_SIZE    8
 
 struct bpf_prog_info {