uapi: update bpf headers

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 4bbe7e5d4c8004e15811a32ded6e65f103d6a90d..8eb284d2f1acb37d1a1e7b6b42d8cdcf831623c0 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/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 {
@@ -2091,6 +2093,24 @@ union bpf_attr {
  *     Return
  *             The id is returned or 0 in case the id could not be retrieved.
  *
+ * u64 bpf_skb_ancestor_cgroup_id(struct sk_buff *skb, int ancestor_level)
+ *     Description
+ *             Return id of cgroup v2 that is ancestor of cgroup associated
+ *             with the *skb* at the *ancestor_level*.  The root cgroup is at
+ *             *ancestor_level* zero and each step down the hierarchy
+ *             increments the level. If *ancestor_level* == level of cgroup
+ *             associated with *skb*, then return value will be same as that
+ *             of **bpf_skb_cgroup_id**\ ().
+ *
+ *             The helper is useful to implement policies based on cgroups
+ *             that are upper in hierarchy than immediate cgroup associated
+ *             with *skb*.
+ *
+ *             The format of returned id and helper limitations are same as in
+ *             **bpf_skb_cgroup_id**\ ().
+ *     Return
+ *             The id is returned or 0 in case the id could not be retrieved.
+ *
  * u64 bpf_get_current_cgroup_id(void)
  *     Return
  *             A 64-bit integer containing the current cgroup id based
@@ -2113,6 +2133,14 @@ 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 +2224,9 @@ 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),        \
+       FN(skb_ancestor_cgroup_id),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
@@ -2413,6 +2443,30 @@ 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 {