BPF_MAP_TYPE_ARRAY,
BPF_MAP_TYPE_PROG_ARRAY,
BPF_MAP_TYPE_PERF_EVENT_ARRAY,
+ BPF_MAP_TYPE_PERCPU_HASH,
+ BPF_MAP_TYPE_PERCPU_ARRAY,
+ BPF_MAP_TYPE_STACK_TRACE,
};
enum bpf_prog_type {
* Return: 0 on success
*/
BPF_FUNC_perf_event_output,
+ BPF_FUNC_skb_load_bytes,
+
+ /**
+ * bpf_get_stackid(ctx, map, flags) - walk user or kernel stack and return id
+ * @ctx: struct pt_regs*
+ * @map: pointer to stack_trace map
+ * @flags: bits 0-7 - numer of stack frames to skip
+ * bit 8 - collect user stack instead of kernel
+ * bit 9 - compare stacks by hash only
+ * bit 10 - if two different stacks hash into the same stackid
+ * discard old
+ * other bits - reserved
+ * Return: >= 0 stackid on success or negative error
+ */
+ BPF_FUNC_get_stackid,
+
+ /**
+ * bpf_csum_diff(from, from_size, to, to_size, seed) - calculate csum diff
+ * @from: raw from buffer
+ * @from_size: length of from buffer
+ * @to: raw to buffer
+ * @to_size: length of to buffer
+ * @seed: optional seed
+ * Return: csum result
+ */
+ BPF_FUNC_csum_diff,
__BPF_FUNC_MAX_ID,
};
+/* All flags used by eBPF helper functions, placed here. */
+
+/* BPF_FUNC_skb_store_bytes flags. */
+#define BPF_F_RECOMPUTE_CSUM (1ULL << 0)
+
+/* BPF_FUNC_l3_csum_replace and BPF_FUNC_l4_csum_replace flags.
+ * First 4 bits are for passing the header field size.
+ */
+#define BPF_F_HDR_FIELD_MASK 0xfULL
+
+/* BPF_FUNC_l4_csum_replace flags. */
+#define BPF_F_PSEUDO_HDR (1ULL << 4)
+#define BPF_F_MARK_MANGLED_0 (1ULL << 5)
+
+/* BPF_FUNC_clone_redirect and BPF_FUNC_redirect flags. */
+#define BPF_F_INGRESS (1ULL << 0)
+
+/* BPF_FUNC_skb_set_tunnel_key and BPF_FUNC_skb_get_tunnel_key flags. */
+#define BPF_F_TUNINFO_IPV6 (1ULL << 0)
+
+/* BPF_FUNC_get_stackid flags. */
+#define BPF_F_SKIP_FIELD_MASK 0xffULL
+#define BPF_F_USER_STACK (1ULL << 8)
+#define BPF_F_FAST_STACK_CMP (1ULL << 9)
+#define BPF_F_REUSE_STACKID (1ULL << 10)
+
/* user accessible mirror of in-kernel sk_buff.
* new fields can only be added to the end of this structure
*/
struct bpf_tunnel_key {
__u32 tunnel_id;
- __u32 remote_ipv4;
+ union {
+ __u32 remote_ipv4;
+ __u32 remote_ipv6[4];
+ };
+ __u8 tunnel_tos;
+ __u8 tunnel_ttl;
};
#endif /* _UAPI__LINUX_BPF_H__ */
static int (*bpf_perf_event_output)(void *ctx, void *map, u32 index, void *data, u32 size) =
(void *) BPF_FUNC_perf_event_output;
#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,5,0)
+static int (*bpf_skb_load_bytes)(void *ctx, int offset, void *to, u32 len) =
+ (void *) BPF_FUNC_skb_load_bytes;
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)
+static int (*bpf_get_stackid)(void *ctx, void *map) =
+ (void *) BPF_FUNC_get_stackid;
+static int (*bpf_csum_diff)(void *from, u64 from_size, void *to, u64 to_size, u64 seed) =
+ (void *) BPF_FUNC_csum_diff;
+#endif
/* llvm builtin functions that eBPF C program may use to
* emit BPF_LD_ABS and BPF_LD_IND instructions