__s32 imm; /* signed immediate constant */
};
-/* BPF syscall commands */
+/* BPF syscall commands, see bpf(2) man-page for details. */
enum bpf_cmd {
- /* create a map with given type and attributes
- * fd = bpf(BPF_MAP_CREATE, union bpf_attr *, u32 size)
- * returns fd or negative error
- * map is deleted when fd is closed
- */
BPF_MAP_CREATE,
-
- /* lookup key in a given map
- * err = bpf(BPF_MAP_LOOKUP_ELEM, union bpf_attr *attr, u32 size)
- * Using attr->map_fd, attr->key, attr->value
- * returns zero and stores found elem into value
- * or negative error
- */
BPF_MAP_LOOKUP_ELEM,
-
- /* create or update key/value pair in a given map
- * err = bpf(BPF_MAP_UPDATE_ELEM, union bpf_attr *attr, u32 size)
- * Using attr->map_fd, attr->key, attr->value, attr->flags
- * returns zero or negative error
- */
BPF_MAP_UPDATE_ELEM,
-
- /* find and delete elem by key in a given map
- * err = bpf(BPF_MAP_DELETE_ELEM, union bpf_attr *attr, u32 size)
- * Using attr->map_fd, attr->key
- * returns zero or negative error
- */
BPF_MAP_DELETE_ELEM,
-
- /* lookup key in a given map and return next key
- * err = bpf(BPF_MAP_GET_NEXT_KEY, union bpf_attr *attr, u32 size)
- * Using attr->map_fd, attr->key, attr->next_key
- * returns zero and stores next key or negative error
- */
BPF_MAP_GET_NEXT_KEY,
-
- /* verify and load eBPF program
- * prog_fd = bpf(BPF_PROG_LOAD, union bpf_attr *attr, u32 size)
- * Using attr->prog_type, attr->insns, attr->license
- * returns fd or negative error
- */
BPF_PROG_LOAD,
+ BPF_OBJ_PIN,
+ BPF_OBJ_GET,
};
enum bpf_map_type {
BPF_MAP_TYPE_UNSPEC,
BPF_MAP_TYPE_HASH,
BPF_MAP_TYPE_ARRAY,
+ BPF_MAP_TYPE_PROG_ARRAY,
+ BPF_MAP_TYPE_PERF_EVENT_ARRAY,
};
enum bpf_prog_type {
__aligned_u64 log_buf; /* user supplied buffer */
__u32 kern_version; /* checked when prog_type=kprobe */
};
+
+ struct { /* anonymous struct used by BPF_OBJ_* commands */
+ __aligned_u64 pathname;
+ __u32 bpf_fd;
+ };
} __attribute__((aligned(8)));
/* integer value in 'imm' field of BPF_CALL instruction selects which helper
* Return: 0 on success
*/
BPF_FUNC_l4_csum_replace,
+
+ /**
+ * bpf_tail_call(ctx, prog_array_map, index) - jump into another BPF program
+ * @ctx: context pointer passed to next program
+ * @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY
+ * @index: index inside array that selects specific program to run
+ * Return: 0 on success
+ */
+ BPF_FUNC_tail_call,
+
+ /**
+ * bpf_clone_redirect(skb, ifindex, flags) - redirect to another netdev
+ * @skb: pointer to skb
+ * @ifindex: ifindex of the net device
+ * @flags: bit 0 - if set, redirect to ingress instead of egress
+ * other bits - reserved
+ * Return: 0 on success
+ */
+ BPF_FUNC_clone_redirect,
+
+ /**
+ * u64 bpf_get_current_pid_tgid(void)
+ * Return: current->tgid << 32 | current->pid
+ */
+ BPF_FUNC_get_current_pid_tgid,
+
+ /**
+ * u64 bpf_get_current_uid_gid(void)
+ * Return: current_gid << 32 | current_uid
+ */
+ BPF_FUNC_get_current_uid_gid,
+
+ /**
+ * bpf_get_current_comm(char *buf, int size_of_buf)
+ * stores current->comm into buf
+ * Return: 0 on success
+ */
+ BPF_FUNC_get_current_comm,
+
+ /**
+ * bpf_get_cgroup_classid(skb) - retrieve a proc's classid
+ * @skb: pointer to skb
+ * Return: classid if != 0
+ */
+ BPF_FUNC_get_cgroup_classid,
+ BPF_FUNC_skb_vlan_push, /* bpf_skb_vlan_push(skb, vlan_proto, vlan_tci) */
+ BPF_FUNC_skb_vlan_pop, /* bpf_skb_vlan_pop(skb) */
+
+ /**
+ * bpf_skb_[gs]et_tunnel_key(skb, key, size, flags)
+ * retrieve or populate tunnel metadata
+ * @skb: pointer to skb
+ * @key: pointer to 'struct bpf_tunnel_key'
+ * @size: size of 'struct bpf_tunnel_key'
+ * @flags: room for future extensions
+ * Retrun: 0 on success
+ */
+ BPF_FUNC_skb_get_tunnel_key,
+ BPF_FUNC_skb_set_tunnel_key,
+ BPF_FUNC_perf_event_read, /* u64 bpf_perf_event_read(&map, index) */
+ /**
+ * bpf_redirect(ifindex, flags) - redirect to another netdev
+ * @ifindex: ifindex of the net device
+ * @flags: bit 0 - if set, redirect to ingress instead of egress
+ * other bits - reserved
+ * Return: TC_ACT_REDIRECT
+ */
+ BPF_FUNC_redirect,
+
+ /**
+ * bpf_get_route_realm(skb) - retrieve a dst's tclassid
+ * @skb: pointer to skb
+ * Return: realm if != 0
+ */
+ BPF_FUNC_get_route_realm,
+
+ /**
+ * bpf_perf_event_output(ctx, map, index, data, size) - output perf raw sample
+ * @ctx: struct pt_regs*
+ * @map: pointer to perf_event_array map
+ * @index: index of event in the map
+ * @data: data on stack to be output as raw data
+ * @size: size of data
+ * Return: 0 on success
+ */
+ BPF_FUNC_perf_event_output,
__BPF_FUNC_MAX_ID,
};
__u32 vlan_tci;
__u32 vlan_proto;
__u32 priority;
+ __u32 ingress_ifindex;
+ __u32 ifindex;
+ __u32 tc_index;
+ __u32 cb[5];
+ __u32 hash;
+ __u32 tc_classid;
+};
+
+struct bpf_tunnel_key {
+ __u32 tunnel_id;
+ __u32 remote_ipv4;
};
#endif /* _UAPI__LINUX_BPF_H__ */
Code Review / kvmfornfv.git / blobdiff