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-rw-r--r--tools/include/uapi/linux/bpf.h203
1 files changed, 198 insertions, 5 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 0eb0e87dbe9f..ce2988be4f0e 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -63,6 +63,12 @@ struct bpf_insn {
__s32 imm; /* signed immediate constant */
};
+/* Key of an a BPF_MAP_TYPE_LPM_TRIE entry */
+struct bpf_lpm_trie_key {
+ __u32 prefixlen; /* up to 32 for AF_INET, 128 for AF_INET6 */
+ __u8 data[0]; /* Arbitrary size */
+};
+
/* BPF syscall commands, see bpf(2) man-page for details. */
enum bpf_cmd {
BPF_MAP_CREATE,
@@ -75,6 +81,12 @@ enum bpf_cmd {
BPF_OBJ_GET,
BPF_PROG_ATTACH,
BPF_PROG_DETACH,
+ BPF_PROG_TEST_RUN,
+ BPF_PROG_GET_NEXT_ID,
+ BPF_MAP_GET_NEXT_ID,
+ BPF_PROG_GET_FD_BY_ID,
+ BPF_MAP_GET_FD_BY_ID,
+ BPF_OBJ_GET_INFO_BY_FD,
};
enum bpf_map_type {
@@ -89,6 +101,9 @@ enum bpf_map_type {
BPF_MAP_TYPE_CGROUP_ARRAY,
BPF_MAP_TYPE_LRU_HASH,
BPF_MAP_TYPE_LRU_PERCPU_HASH,
+ BPF_MAP_TYPE_LPM_TRIE,
+ BPF_MAP_TYPE_ARRAY_OF_MAPS,
+ BPF_MAP_TYPE_HASH_OF_MAPS,
};
enum bpf_prog_type {
@@ -105,17 +120,32 @@ enum bpf_prog_type {
BPF_PROG_TYPE_LWT_IN,
BPF_PROG_TYPE_LWT_OUT,
BPF_PROG_TYPE_LWT_XMIT,
+ BPF_PROG_TYPE_SOCK_OPS,
};
enum bpf_attach_type {
BPF_CGROUP_INET_INGRESS,
BPF_CGROUP_INET_EGRESS,
BPF_CGROUP_INET_SOCK_CREATE,
+ BPF_CGROUP_SOCK_OPS,
__MAX_BPF_ATTACH_TYPE
};
#define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
+/* If BPF_F_ALLOW_OVERRIDE flag is used in BPF_PROG_ATTACH command
+ * to the given target_fd cgroup the descendent cgroup will be able to
+ * override effective bpf program that was inherited from this cgroup
+ */
+#define BPF_F_ALLOW_OVERRIDE (1U << 0)
+
+/* If BPF_F_STRICT_ALIGNMENT is used in BPF_PROG_LOAD command, the
+ * verifier will perform strict alignment checking as if the kernel
+ * has been built with CONFIG_EFFICIENT_UNALIGNED_ACCESS not set,
+ * and NET_IP_ALIGN defined to 2.
+ */
+#define BPF_F_STRICT_ALIGNMENT (1U << 0)
+
#define BPF_PSEUDO_MAP_FD 1
/* flags for BPF_MAP_UPDATE_ELEM command */
@@ -139,6 +169,7 @@ union bpf_attr {
__u32 value_size; /* size of value in bytes */
__u32 max_entries; /* max number of entries in a map */
__u32 map_flags; /* prealloc or not */
+ __u32 inner_map_fd; /* fd pointing to the inner map */
};
struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */
@@ -160,6 +191,7 @@ union bpf_attr {
__u32 log_size; /* size of user buffer */
__aligned_u64 log_buf; /* user supplied buffer */
__u32 kern_version; /* checked when prog_type=kprobe */
+ __u32 prog_flags;
};
struct { /* anonymous struct used by BPF_OBJ_* commands */
@@ -171,7 +203,34 @@ union bpf_attr {
__u32 target_fd; /* container object to attach to */
__u32 attach_bpf_fd; /* eBPF program to attach */
__u32 attach_type;
+ __u32 attach_flags;
};
+
+ struct { /* anonymous struct used by BPF_PROG_TEST_RUN command */
+ __u32 prog_fd;
+ __u32 retval;
+ __u32 data_size_in;
+ __u32 data_size_out;
+ __aligned_u64 data_in;
+ __aligned_u64 data_out;
+ __u32 repeat;
+ __u32 duration;
+ } test;
+
+ struct { /* anonymous struct used by BPF_*_GET_*_ID */
+ union {
+ __u32 start_id;
+ __u32 prog_id;
+ __u32 map_id;
+ };
+ __u32 next_id;
+ };
+
+ struct { /* anonymous struct used by BPF_OBJ_GET_INFO_BY_FD */
+ __u32 bpf_fd;
+ __u32 info_len;
+ __aligned_u64 info;
+ } info;
} __attribute__((aligned(8)));
/* BPF helper function descriptions:
@@ -276,8 +335,11 @@ union bpf_attr {
* @flags: room for future extensions
* Return: 0 on success or negative error
*
- * u64 bpf_perf_event_read(&map, index)
- * Return: Number events read or error code
+ * u64 bpf_perf_event_read(map, flags)
+ * read perf event counter value
+ * @map: pointer to perf_event_array map
+ * @flags: index of event in the map or bitmask flags
+ * Return: value of perf event counter read or error code
*
* int bpf_redirect(ifindex, flags)
* redirect to another netdev
@@ -291,11 +353,11 @@ union bpf_attr {
* @skb: pointer to skb
* Return: realm if != 0
*
- * int bpf_perf_event_output(ctx, map, index, data, size)
+ * int bpf_perf_event_output(ctx, map, flags, data, size)
* output perf raw sample
* @ctx: struct pt_regs*
* @map: pointer to perf_event_array map
- * @index: index of event in the map
+ * @flags: index of event in the map or bitmask flags
* @data: data on stack to be output as raw data
* @size: size of data
* Return: 0 on success or negative error
@@ -430,6 +492,53 @@ union bpf_attr {
* @xdp_md: pointer to xdp_md
* @delta: An positive/negative integer to be added to xdp_md.data
* Return: 0 on success or negative on error
+ *
+ * int bpf_probe_read_str(void *dst, int size, const void *unsafe_ptr)
+ * Copy a NUL terminated string from unsafe address. In case the string
+ * length is smaller than size, the target is not padded with further NUL
+ * bytes. In case the string length is larger than size, just count-1
+ * bytes are copied and the last byte is set to NUL.
+ * @dst: destination address
+ * @size: maximum number of bytes to copy, including the trailing NUL
+ * @unsafe_ptr: unsafe address
+ * Return:
+ * > 0 length of the string including the trailing NUL on success
+ * < 0 error
+ *
+ * u64 bpf_get_socket_cookie(skb)
+ * Get the cookie for the socket stored inside sk_buff.
+ * @skb: pointer to skb
+ * Return: 8 Bytes non-decreasing number on success or 0 if the socket
+ * field is missing inside sk_buff
+ *
+ * u32 bpf_get_socket_uid(skb)
+ * Get the owner uid of the socket stored inside sk_buff.
+ * @skb: pointer to skb
+ * Return: uid of the socket owner on success or overflowuid if failed.
+ *
+ * u32 bpf_set_hash(skb, hash)
+ * Set full skb->hash.
+ * @skb: pointer to skb
+ * @hash: hash to set
+ *
+ * int bpf_setsockopt(bpf_socket, level, optname, optval, optlen)
+ * Calls setsockopt. Not all opts are available, only those with
+ * integer optvals plus TCP_CONGESTION.
+ * Supported levels: SOL_SOCKET and IPROTO_TCP
+ * @bpf_socket: pointer to bpf_socket
+ * @level: SOL_SOCKET or IPROTO_TCP
+ * @optname: option name
+ * @optval: pointer to option value
+ * @optlen: length of optval in byes
+ * Return: 0 or negative error
+ *
+ * int bpf_skb_adjust_room(skb, len_diff, mode, flags)
+ * Grow or shrink room in sk_buff.
+ * @skb: pointer to skb
+ * @len_diff: (signed) amount of room to grow/shrink
+ * @mode: operation mode (enum bpf_adj_room_mode)
+ * @flags: reserved for future use
+ * Return: 0 on success or negative error code
*/
#define __BPF_FUNC_MAPPER(FN) \
FN(unspec), \
@@ -476,7 +585,13 @@ union bpf_attr {
FN(set_hash_invalid), \
FN(get_numa_node_id), \
FN(skb_change_head), \
- FN(xdp_adjust_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),
/* integer value in 'imm' field of BPF_CALL instruction selects which helper
* function eBPF program intends to call
@@ -502,6 +617,7 @@ enum bpf_func_id {
/* BPF_FUNC_l4_csum_replace flags. */
#define BPF_F_PSEUDO_HDR (1ULL << 4)
#define BPF_F_MARK_MANGLED_0 (1ULL << 5)
+#define BPF_F_MARK_ENFORCE (1ULL << 6)
/* BPF_FUNC_clone_redirect and BPF_FUNC_redirect flags. */
#define BPF_F_INGRESS (1ULL << 0)
@@ -525,6 +641,11 @@ enum bpf_func_id {
/* BPF_FUNC_perf_event_output for sk_buff input context. */
#define BPF_F_CTXLEN_MASK (0xfffffULL << 32)
+/* Mode for BPF_FUNC_skb_adjust_room helper. */
+enum bpf_adj_room_mode {
+ BPF_ADJ_ROOM_NET_OPTS,
+};
+
/* user accessible mirror of in-kernel sk_buff.
* new fields can only be added to the end of this structure
*/
@@ -546,6 +667,7 @@ struct __sk_buff {
__u32 tc_classid;
__u32 data;
__u32 data_end;
+ __u32 napi_id;
};
struct bpf_tunnel_key {
@@ -605,4 +727,75 @@ struct xdp_md {
__u32 data_end;
};
+#define BPF_TAG_SIZE 8
+
+struct bpf_prog_info {
+ __u32 type;
+ __u32 id;
+ __u8 tag[BPF_TAG_SIZE];
+ __u32 jited_prog_len;
+ __u32 xlated_prog_len;
+ __aligned_u64 jited_prog_insns;
+ __aligned_u64 xlated_prog_insns;
+} __attribute__((aligned(8)));
+
+struct bpf_map_info {
+ __u32 type;
+ __u32 id;
+ __u32 key_size;
+ __u32 value_size;
+ __u32 max_entries;
+ __u32 map_flags;
+} __attribute__((aligned(8)));
+
+/* User bpf_sock_ops struct to access socket values and specify request ops
+ * and their replies.
+ * New fields can only be added at the end of this structure
+ */
+struct bpf_sock_ops {
+ __u32 op;
+ union {
+ __u32 reply;
+ __u32 replylong[4];
+ };
+ __u32 family;
+ __u32 remote_ip4;
+ __u32 local_ip4;
+ __u32 remote_ip6[4];
+ __u32 local_ip6[4];
+ __u32 remote_port;
+ __u32 local_port;
+};
+
+/* List of known BPF sock_ops operators.
+ * New entries can only be added at the end
+ */
+enum {
+ BPF_SOCK_OPS_VOID,
+ BPF_SOCK_OPS_TIMEOUT_INIT, /* Should return SYN-RTO value to use or
+ * -1 if default value should be used
+ */
+ BPF_SOCK_OPS_RWND_INIT, /* Should return initial advertized
+ * window (in packets) or -1 if default
+ * value should be used
+ */
+ BPF_SOCK_OPS_TCP_CONNECT_CB, /* Calls BPF program right before an
+ * active connection is initialized
+ */
+ BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB, /* Calls BPF program when an
+ * active connection is
+ * established
+ */
+ BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB, /* Calls BPF program when a
+ * passive connection is
+ * established
+ */
+ BPF_SOCK_OPS_NEEDS_ECN, /* If connection's congestion control
+ * needs ECN
+ */
+};
+
+#define TCP_BPF_IW 1001 /* Set TCP initial congestion window */
+#define TCP_BPF_SNDCWND_CLAMP 1002 /* Set sndcwnd_clamp */
+
#endif /* _UAPI__LINUX_BPF_H__ */
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