Update to v5.9 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.9

Test: Boots cuttlefish 64bit, passes 32 bit and 64 bit bionic unit tests.
Change-Id: Ib5503355b238ea75595538e63eb000c867d06ef7
diff --git a/libc/kernel/uapi/linux/bpf.h b/libc/kernel/uapi/linux/bpf.h
index 54b7849..816871a 100644
--- a/libc/kernel/uapi/linux/bpf.h
+++ b/libc/kernel/uapi/linux/bpf.h
@@ -70,6 +70,11 @@
   __u64 cgroup_inode_id;
   __u32 attach_type;
 };
+union bpf_iter_link_info {
+  struct {
+    __u32 map_fd;
+  } map;
+};
 enum bpf_cmd {
   BPF_MAP_CREATE,
   BPF_MAP_LOOKUP_ELEM,
@@ -105,6 +110,7 @@
   BPF_LINK_GET_NEXT_ID,
   BPF_ENABLE_STATS,
   BPF_ITER_CREATE,
+  BPF_LINK_DETACH,
 };
 enum bpf_map_type {
   BPF_MAP_TYPE_UNSPEC,
@@ -167,6 +173,7 @@
   BPF_PROG_TYPE_STRUCT_OPS,
   BPF_PROG_TYPE_EXT,
   BPF_PROG_TYPE_LSM,
+  BPF_PROG_TYPE_SK_LOOKUP,
 };
 enum bpf_attach_type {
   BPF_CGROUP_INET_INGRESS,
@@ -203,6 +210,10 @@
   BPF_CGROUP_INET4_GETSOCKNAME,
   BPF_CGROUP_INET6_GETSOCKNAME,
   BPF_XDP_DEVMAP,
+  BPF_CGROUP_INET_SOCK_RELEASE,
+  BPF_XDP_CPUMAP,
+  BPF_SK_LOOKUP,
+  BPF_XDP,
   __MAX_BPF_ATTACH_TYPE
 };
 #define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
@@ -213,6 +224,7 @@
   BPF_LINK_TYPE_CGROUP = 3,
   BPF_LINK_TYPE_ITER = 4,
   BPF_LINK_TYPE_NETNS = 5,
+  BPF_LINK_TYPE_XDP = 6,
   MAX_BPF_LINK_TYPE,
 };
 #define BPF_F_ALLOW_OVERRIDE (1U << 0)
@@ -395,9 +407,14 @@
   } task_fd_query;
   struct {
     __u32 prog_fd;
-    __u32 target_fd;
+    union {
+      __u32 target_fd;
+      __u32 target_ifindex;
+    };
     __u32 attach_type;
     __u32 flags;
+    __aligned_u64 iter_info;
+    __u32 iter_info_len;
   } link_create;
   struct {
     __u32 link_fd;
@@ -406,6 +423,9 @@
     __u32 old_prog_fd;
   } link_update;
   struct {
+    __u32 link_fd;
+  } link_detach;
+  struct {
     __u32 type;
   } enable_stats;
   struct {
@@ -413,7 +433,7 @@
     __u32 flags;
   } iter_create;
 } __attribute__((aligned(8)));
-#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str), FN(tcp_send_ack), FN(send_signal_thread), FN(jiffies64), FN(read_branch_records), FN(get_ns_current_pid_tgid), FN(xdp_output), FN(get_netns_cookie), FN(get_current_ancestor_cgroup_id), FN(sk_assign), FN(ktime_get_boot_ns), FN(seq_printf), FN(seq_write), FN(sk_cgroup_id), FN(sk_ancestor_cgroup_id), FN(ringbuf_output), FN(ringbuf_reserve), FN(ringbuf_submit), FN(ringbuf_discard), FN(ringbuf_query), FN(csum_level),
+#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str), FN(tcp_send_ack), FN(send_signal_thread), FN(jiffies64), FN(read_branch_records), FN(get_ns_current_pid_tgid), FN(xdp_output), FN(get_netns_cookie), FN(get_current_ancestor_cgroup_id), FN(sk_assign), FN(ktime_get_boot_ns), FN(seq_printf), FN(seq_write), FN(sk_cgroup_id), FN(sk_ancestor_cgroup_id), FN(ringbuf_output), FN(ringbuf_reserve), FN(ringbuf_submit), FN(ringbuf_discard), FN(ringbuf_query), FN(csum_level), FN(skc_to_tcp6_sock), FN(skc_to_tcp_sock), FN(skc_to_tcp_timewait_sock), FN(skc_to_tcp_request_sock), FN(skc_to_udp6_sock), FN(get_task_stack),
 #define __BPF_ENUM_FN(x) BPF_FUNC_ ##x
 enum bpf_func_id {
   __BPF_FUNC_MAPPER(__BPF_ENUM_FN) __BPF_FUNC_MAX_ID,
@@ -500,6 +520,10 @@
   BPF_RINGBUF_DISCARD_BIT = (1U << 30),
   BPF_RINGBUF_HDR_SZ = 8,
 };
+enum {
+  BPF_SK_LOOKUP_F_REPLACE = (1ULL << 0),
+  BPF_SK_LOOKUP_F_NO_REUSEPORT = (1ULL << 1),
+};
 enum bpf_adj_room_mode {
   BPF_ADJ_ROOM_NET,
   BPF_ADJ_ROOM_MAC,
@@ -662,6 +686,13 @@
     __u32 id;
   } bpf_prog;
 };
+struct bpf_cpumap_val {
+  __u32 qsize;
+  union {
+    int fd;
+    __u32 id;
+  } bpf_prog;
+};
 enum sk_action {
   SK_DROP = 0,
   SK_PASS,
@@ -767,6 +798,9 @@
       __u32 netns_ino;
       __u32 attach_type;
     } netns;
+    struct {
+      __u32 ifindex;
+    } xdp;
   };
 } __attribute__((aligned(8)));
 struct bpf_sock_addr {
@@ -995,4 +1029,15 @@
   __u32 pid;
   __u32 tgid;
 };
+struct bpf_sk_lookup {
+  __bpf_md_ptr(struct bpf_sock *, sk);
+  __u32 family;
+  __u32 protocol;
+  __u32 remote_ip4;
+  __u32 remote_ip6[4];
+  __u32 remote_port;
+  __u32 local_ip4;
+  __u32 local_ip6[4];
+  __u32 local_port;
+};
 #endif