bpf: Sync linux/bpf.h to tools/ (a352b32a) · Commits · EulixOS / Software / Kernel

tools/include/uapi/linux/bpf.h

+77 −0

Original line number	Diff line number	Diff line
		@@ -189,6 +189,7 @@ enum bpf_prog_type {
		BPF_PROG_TYPE_STRUCT_OPS,
		BPF_PROG_TYPE_EXT,
		BPF_PROG_TYPE_LSM,
		BPF_PROG_TYPE_SK_LOOKUP,
		};

		enum bpf_attach_type {
		@@ -228,6 +229,7 @@ enum bpf_attach_type {
		BPF_XDP_DEVMAP,
		BPF_CGROUP_INET_SOCK_RELEASE,
		BPF_XDP_CPUMAP,
		BPF_SK_LOOKUP,
		__MAX_BPF_ATTACH_TYPE
		};

		@@ -3069,6 +3071,10 @@ union bpf_attr {
		*
		* long bpf_sk_assign(struct sk_buff skb, struct bpf_sock sk, u64 flags)
		* Description
		* Helper is overloaded depending on BPF program type. This
		* description applies to BPF_PROG_TYPE_SCHED_CLS and
		* BPF_PROG_TYPE_SCHED_ACT programs.
		*
		* Assign the sk to the skb. When combined with appropriate
		* routing configuration to receive the packet towards the socket,
		* will cause skb to be delivered to the specified socket.
		@@ -3094,6 +3100,56 @@ union bpf_attr {
		* -ESOCKTNOSUPPORT if the socket type is not supported
		* (reuseport).
		*
		* long bpf_sk_assign(struct bpf_sk_lookup ctx, struct bpf_sock sk, u64 flags)
		* Description
		* Helper is overloaded depending on BPF program type. This
		* description applies to BPF_PROG_TYPE_SK_LOOKUP programs.
		*
		* Select the sk as a result of a socket lookup.
		*
		* For the operation to succeed passed socket must be compatible
		* with the packet description provided by the ctx object.
		*
		* L4 protocol (IPPROTO_TCP or IPPROTO_UDP) must
		* be an exact match. While IP family (AF_INET or
		* AF_INET6) must be compatible, that is IPv6 sockets
		* that are not v6-only can be selected for IPv4 packets.
		*
		* Only TCP listeners and UDP unconnected sockets can be
		* selected. sk can also be NULL to reset any previous
		* selection.
		*
		* flags argument can combination of following values:
		*
		* * BPF_SK_LOOKUP_F_REPLACE to override the previous
		* socket selection, potentially done by a BPF program
		* that ran before us.
		*
		* * BPF_SK_LOOKUP_F_NO_REUSEPORT to skip
		* load-balancing within reuseport group for the socket
		* being selected.
		*
		* On success ctx->sk will point to the selected socket.
		*
		* Return
		* 0 on success, or a negative errno in case of failure.
		*
		* * -EAFNOSUPPORT if socket family (sk->family) is
		* not compatible with packet family (ctx->family).
		*
		* * -EEXIST if socket has been already selected,
		* potentially by another program, and
		* BPF_SK_LOOKUP_F_REPLACE flag was not specified.
		*
		* * -EINVAL if unsupported flags were specified.
		*
		* * -EPROTOTYPE if socket L4 protocol
		* (sk->protocol) doesn't match packet protocol
		* (ctx->protocol).
		*
		* * -ESOCKTNOSUPPORT if socket is not in allowed
		* state (TCP listening or UDP unconnected).
		*
		* u64 bpf_ktime_get_boot_ns(void)
		* Description
		* Return the time elapsed since system boot, in nanoseconds.
		@@ -3607,6 +3663,12 @@ enum {
		BPF_RINGBUF_HDR_SZ = 8,
		};

		/* BPF_FUNC_sk_assign flags in bpf_sk_lookup context. */
		enum {
		BPF_SK_LOOKUP_F_REPLACE = (1ULL << 0),
		BPF_SK_LOOKUP_F_NO_REUSEPORT = (1ULL << 1),
		};

		/* Mode for BPF_FUNC_skb_adjust_room helper. */
		enum bpf_adj_room_mode {
		BPF_ADJ_ROOM_NET,
		@@ -4349,4 +4411,19 @@ struct bpf_pidns_info {
		__u32 pid;
		__u32 tgid;
		};

		/* User accessible data for SK_LOOKUP programs. Add new fields at the end. */
		struct bpf_sk_lookup {
		__bpf_md_ptr(struct bpf_sock , sk); / Selected socket */

		__u32 family; /* Protocol family (AF_INET, AF_INET6) */
		__u32 protocol; /* IP protocol (IPPROTO_TCP, IPPROTO_UDP) */
		__u32 remote_ip4; /* Network byte order */
		__u32 remote_ip6[4]; /* Network byte order */
		__u32 remote_port; /* Network byte order */
		__u32 local_ip4; /* Network byte order */
		__u32 local_ip6[4]; /* Network byte order */
		__u32 local_port; /* Host byte order */
		};

		#endif /* _UAPI__LINUX_BPF_H__ */