tools lib bpf: Sync {tools,}/include/uapi/linux/bpf.h
The tools version of this header is out of date; update it to the latest version from the kernel headers. Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Link: http://lkml.kernel.org/r/20161209024620.31660-2-joe@ovn.org [ Sync it harder, after merging with what was in net-next via perf/urgent via torvalds/master to get BPG_PROG_(AT|DE)TACH, etc ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Joe Stringer
Arnaldo Carvalho de Melo
Родитель
e216874cc1
Коммит
0cb34dc2a3
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@ -73,6 +73,8 @@ enum bpf_cmd {
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BPF_PROG_LOAD,
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BPF_OBJ_PIN,
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BPF_OBJ_GET,
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BPF_PROG_ATTACH,
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BPF_PROG_DETACH,
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};
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enum bpf_map_type {
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@ -85,6 +87,8 @@ enum bpf_map_type {
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BPF_MAP_TYPE_PERCPU_ARRAY,
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BPF_MAP_TYPE_STACK_TRACE,
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BPF_MAP_TYPE_CGROUP_ARRAY,
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BPF_MAP_TYPE_LRU_HASH,
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BPF_MAP_TYPE_LRU_PERCPU_HASH,
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};
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enum bpf_prog_type {
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@ -95,8 +99,23 @@ enum bpf_prog_type {
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BPF_PROG_TYPE_SCHED_ACT,
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BPF_PROG_TYPE_TRACEPOINT,
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BPF_PROG_TYPE_XDP,
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BPF_PROG_TYPE_PERF_EVENT,
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BPF_PROG_TYPE_CGROUP_SKB,
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BPF_PROG_TYPE_CGROUP_SOCK,
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BPF_PROG_TYPE_LWT_IN,
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BPF_PROG_TYPE_LWT_OUT,
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BPF_PROG_TYPE_LWT_XMIT,
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};
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enum bpf_attach_type {
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BPF_CGROUP_INET_INGRESS,
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BPF_CGROUP_INET_EGRESS,
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BPF_CGROUP_INET_SOCK_CREATE,
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__MAX_BPF_ATTACH_TYPE
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};
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#define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
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#define BPF_PSEUDO_MAP_FD 1
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/* flags for BPF_MAP_UPDATE_ELEM command */
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@ -105,6 +124,13 @@ enum bpf_prog_type {
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#define BPF_EXIST 2 /* update existing element */
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#define BPF_F_NO_PREALLOC (1U << 0)
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/* Instead of having one common LRU list in the
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* BPF_MAP_TYPE_LRU_[PERCPU_]HASH map, use a percpu LRU list
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* which can scale and perform better.
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* Note, the LRU nodes (including free nodes) cannot be moved
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* across different LRU lists.
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*/
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#define BPF_F_NO_COMMON_LRU (1U << 1)
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union bpf_attr {
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struct { /* anonymous struct used by BPF_MAP_CREATE command */
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@ -140,243 +166,327 @@ union bpf_attr {
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__aligned_u64 pathname;
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__u32 bpf_fd;
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};
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struct { /* anonymous struct used by BPF_PROG_ATTACH/DETACH commands */
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__u32 target_fd; /* container object to attach to */
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__u32 attach_bpf_fd; /* eBPF program to attach */
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__u32 attach_type;
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};
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} __attribute__((aligned(8)));
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/* BPF helper function descriptions:
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*
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* void *bpf_map_lookup_elem(&map, &key)
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* Return: Map value or NULL
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*
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* int bpf_map_update_elem(&map, &key, &value, flags)
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* Return: 0 on success or negative error
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*
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* int bpf_map_delete_elem(&map, &key)
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* Return: 0 on success or negative error
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*
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* int bpf_probe_read(void *dst, int size, void *src)
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* Return: 0 on success or negative error
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*
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* u64 bpf_ktime_get_ns(void)
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* Return: current ktime
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*
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* int bpf_trace_printk(const char *fmt, int fmt_size, ...)
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* Return: length of buffer written or negative error
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*
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* u32 bpf_prandom_u32(void)
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* Return: random value
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*
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* u32 bpf_raw_smp_processor_id(void)
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* Return: SMP processor ID
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*
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* int bpf_skb_store_bytes(skb, offset, from, len, flags)
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* store bytes into packet
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* @skb: pointer to skb
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* @offset: offset within packet from skb->mac_header
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* @from: pointer where to copy bytes from
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* @len: number of bytes to store into packet
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* @flags: bit 0 - if true, recompute skb->csum
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* other bits - reserved
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* Return: 0 on success or negative error
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*
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* int bpf_l3_csum_replace(skb, offset, from, to, flags)
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* recompute IP checksum
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* @skb: pointer to skb
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* @offset: offset within packet where IP checksum is located
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* @from: old value of header field
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* @to: new value of header field
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* @flags: bits 0-3 - size of header field
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* other bits - reserved
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* Return: 0 on success or negative error
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*
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* int bpf_l4_csum_replace(skb, offset, from, to, flags)
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* recompute TCP/UDP checksum
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* @skb: pointer to skb
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* @offset: offset within packet where TCP/UDP checksum is located
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* @from: old value of header field
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* @to: new value of header field
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* @flags: bits 0-3 - size of header field
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* bit 4 - is pseudo header
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* other bits - reserved
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* Return: 0 on success or negative error
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*
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* int bpf_tail_call(ctx, prog_array_map, index)
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* jump into another BPF program
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* @ctx: context pointer passed to next program
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* @prog_array_map: pointer to map which type is BPF_MAP_TYPE_PROG_ARRAY
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* @index: index inside array that selects specific program to run
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* Return: 0 on success or negative error
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*
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* int bpf_clone_redirect(skb, ifindex, flags)
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* redirect to another netdev
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* @skb: pointer to skb
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* @ifindex: ifindex of the net device
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* @flags: bit 0 - if set, redirect to ingress instead of egress
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* other bits - reserved
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* Return: 0 on success or negative error
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*
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* u64 bpf_get_current_pid_tgid(void)
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* Return: current->tgid << 32 | current->pid
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*
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* u64 bpf_get_current_uid_gid(void)
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* Return: current_gid << 32 | current_uid
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*
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* int bpf_get_current_comm(char *buf, int size_of_buf)
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* stores current->comm into buf
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* Return: 0 on success or negative error
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*
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* u32 bpf_get_cgroup_classid(skb)
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* retrieve a proc's classid
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* @skb: pointer to skb
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* Return: classid if != 0
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*
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* int bpf_skb_vlan_push(skb, vlan_proto, vlan_tci)
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* Return: 0 on success or negative error
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*
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* int bpf_skb_vlan_pop(skb)
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* Return: 0 on success or negative error
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*
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* int bpf_skb_get_tunnel_key(skb, key, size, flags)
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* int bpf_skb_set_tunnel_key(skb, key, size, flags)
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* retrieve or populate tunnel metadata
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* @skb: pointer to skb
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* @key: pointer to 'struct bpf_tunnel_key'
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* @size: size of 'struct bpf_tunnel_key'
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* @flags: room for future extensions
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* Return: 0 on success or negative error
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*
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* u64 bpf_perf_event_read(&map, index)
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* Return: Number events read or error code
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*
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* int bpf_redirect(ifindex, flags)
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* redirect to another netdev
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* @ifindex: ifindex of the net device
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* @flags: bit 0 - if set, redirect to ingress instead of egress
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* other bits - reserved
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* Return: TC_ACT_REDIRECT
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*
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* u32 bpf_get_route_realm(skb)
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* retrieve a dst's tclassid
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* @skb: pointer to skb
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* Return: realm if != 0
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*
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* int bpf_perf_event_output(ctx, map, index, data, size)
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* output perf raw sample
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* @ctx: struct pt_regs*
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* @map: pointer to perf_event_array map
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* @index: index of event in the map
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* @data: data on stack to be output as raw data
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* @size: size of data
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* Return: 0 on success or negative error
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*
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* int bpf_get_stackid(ctx, map, flags)
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* walk user or kernel stack and return id
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* @ctx: struct pt_regs*
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* @map: pointer to stack_trace map
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* @flags: bits 0-7 - numer of stack frames to skip
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* bit 8 - collect user stack instead of kernel
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* bit 9 - compare stacks by hash only
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* bit 10 - if two different stacks hash into the same stackid
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* discard old
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* other bits - reserved
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* Return: >= 0 stackid on success or negative error
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*
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* s64 bpf_csum_diff(from, from_size, to, to_size, seed)
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* calculate csum diff
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* @from: raw from buffer
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* @from_size: length of from buffer
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* @to: raw to buffer
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* @to_size: length of to buffer
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* @seed: optional seed
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* Return: csum result or negative error code
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*
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* int bpf_skb_get_tunnel_opt(skb, opt, size)
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* retrieve tunnel options metadata
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* @skb: pointer to skb
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* @opt: pointer to raw tunnel option data
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* @size: size of @opt
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* Return: option size
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*
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* int bpf_skb_set_tunnel_opt(skb, opt, size)
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* populate tunnel options metadata
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* @skb: pointer to skb
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* @opt: pointer to raw tunnel option data
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* @size: size of @opt
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* Return: 0 on success or negative error
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*
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* int bpf_skb_change_proto(skb, proto, flags)
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* Change protocol of the skb. Currently supported is v4 -> v6,
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* v6 -> v4 transitions. The helper will also resize the skb. eBPF
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* program is expected to fill the new headers via skb_store_bytes
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* and lX_csum_replace.
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* @skb: pointer to skb
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* @proto: new skb->protocol type
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* @flags: reserved
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* Return: 0 on success or negative error
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*
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* int bpf_skb_change_type(skb, type)
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* Change packet type of skb.
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* @skb: pointer to skb
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* @type: new skb->pkt_type type
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* Return: 0 on success or negative error
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*
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* int bpf_skb_under_cgroup(skb, map, index)
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* Check cgroup2 membership of skb
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* @skb: pointer to skb
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* @map: pointer to bpf_map in BPF_MAP_TYPE_CGROUP_ARRAY type
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* @index: index of the cgroup in the bpf_map
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* Return:
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* == 0 skb failed the cgroup2 descendant test
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* == 1 skb succeeded the cgroup2 descendant test
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* < 0 error
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*
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* u32 bpf_get_hash_recalc(skb)
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* Retrieve and possibly recalculate skb->hash.
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* @skb: pointer to skb
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* Return: hash
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*
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* u64 bpf_get_current_task(void)
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* Returns current task_struct
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* Return: current
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*
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* int bpf_probe_write_user(void *dst, void *src, int len)
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* safely attempt to write to a location
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* @dst: destination address in userspace
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* @src: source address on stack
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* @len: number of bytes to copy
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* Return: 0 on success or negative error
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*
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* int bpf_current_task_under_cgroup(map, index)
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* Check cgroup2 membership of current task
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* @map: pointer to bpf_map in BPF_MAP_TYPE_CGROUP_ARRAY type
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||||
* @index: index of the cgroup in the bpf_map
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||||
* Return:
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||||
* == 0 current failed the cgroup2 descendant test
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||||
* == 1 current succeeded the cgroup2 descendant test
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* < 0 error
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*
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* int bpf_skb_change_tail(skb, len, flags)
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* The helper will resize the skb to the given new size, to be used f.e.
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* with control messages.
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* @skb: pointer to skb
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* @len: new skb length
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||||
* @flags: reserved
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||||
* Return: 0 on success or negative error
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*
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* int bpf_skb_pull_data(skb, len)
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* The helper will pull in non-linear data in case the skb is non-linear
|
||||
* and not all of len are part of the linear section. Only needed for
|
||||
* read/write with direct packet access.
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||||
* @skb: pointer to skb
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||||
* @len: len to make read/writeable
|
||||
* Return: 0 on success or negative error
|
||||
*
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||||
* s64 bpf_csum_update(skb, csum)
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||||
* Adds csum into skb->csum in case of CHECKSUM_COMPLETE.
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||||
* @skb: pointer to skb
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||||
* @csum: csum to add
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||||
* Return: csum on success or negative error
|
||||
*
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||||
* void bpf_set_hash_invalid(skb)
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||||
* Invalidate current skb->hash.
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||||
* @skb: pointer to skb
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||||
*
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* int bpf_get_numa_node_id()
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||||
* Return: Id of current NUMA node.
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||||
*
|
||||
* int bpf_skb_change_head()
|
||||
* Grows headroom of skb and adjusts MAC header offset accordingly.
|
||||
* Will extends/reallocae as required automatically.
|
||||
* May change skb data pointer and will thus invalidate any check
|
||||
* performed for direct packet access.
|
||||
* @skb: pointer to skb
|
||||
* @len: length of header to be pushed in front
|
||||
* @flags: Flags (unused for now)
|
||||
* Return: 0 on success or negative error
|
||||
*
|
||||
* int bpf_xdp_adjust_head(xdp_md, delta)
|
||||
* Adjust the xdp_md.data by delta
|
||||
* @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
|
||||
*/
|
||||
#define __BPF_FUNC_MAPPER(FN) \
|
||||
FN(unspec), \
|
||||
FN(map_lookup_elem), \
|
||||
FN(map_update_elem), \
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||||
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), \
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||||
FN(clone_redirect), \
|
||||
FN(get_current_pid_tgid), \
|
||||
FN(get_current_uid_gid), \
|
||||
FN(get_current_comm), \
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||||
FN(get_cgroup_classid), \
|
||||
FN(skb_vlan_push), \
|
||||
FN(skb_vlan_pop), \
|
||||
FN(skb_get_tunnel_key), \
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||||
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),
|
||||
|
||||
/* integer value in 'imm' field of BPF_CALL instruction selects which helper
|
||||
* function eBPF program intends to call
|
||||
*/
|
||||
#define __BPF_ENUM_FN(x) BPF_FUNC_ ## x
|
||||
enum bpf_func_id {
|
||||
BPF_FUNC_unspec,
|
||||
BPF_FUNC_map_lookup_elem, /* void *map_lookup_elem(&map, &key) */
|
||||
BPF_FUNC_map_update_elem, /* int map_update_elem(&map, &key, &value, flags) */
|
||||
BPF_FUNC_map_delete_elem, /* int map_delete_elem(&map, &key) */
|
||||
BPF_FUNC_probe_read, /* int bpf_probe_read(void *dst, int size, void *src) */
|
||||
BPF_FUNC_ktime_get_ns, /* u64 bpf_ktime_get_ns(void) */
|
||||
BPF_FUNC_trace_printk, /* int bpf_trace_printk(const char *fmt, int fmt_size, ...) */
|
||||
BPF_FUNC_get_prandom_u32, /* u32 prandom_u32(void) */
|
||||
BPF_FUNC_get_smp_processor_id, /* u32 raw_smp_processor_id(void) */
|
||||
|
||||
/**
|
||||
* skb_store_bytes(skb, offset, from, len, flags) - store bytes into packet
|
||||
* @skb: pointer to skb
|
||||
* @offset: offset within packet from skb->mac_header
|
||||
* @from: pointer where to copy bytes from
|
||||
* @len: number of bytes to store into packet
|
||||
* @flags: bit 0 - if true, recompute skb->csum
|
||||
* other bits - reserved
|
||||
* Return: 0 on success
|
||||
*/
|
||||
BPF_FUNC_skb_store_bytes,
|
||||
|
||||
/**
|
||||
* l3_csum_replace(skb, offset, from, to, flags) - recompute IP checksum
|
||||
* @skb: pointer to skb
|
||||
* @offset: offset within packet where IP checksum is located
|
||||
* @from: old value of header field
|
||||
* @to: new value of header field
|
||||
* @flags: bits 0-3 - size of header field
|
||||
* other bits - reserved
|
||||
* Return: 0 on success
|
||||
*/
|
||||
BPF_FUNC_l3_csum_replace,
|
||||
|
||||
/**
|
||||
* l4_csum_replace(skb, offset, from, to, flags) - recompute TCP/UDP checksum
|
||||
* @skb: pointer to skb
|
||||
* @offset: offset within packet where TCP/UDP checksum is located
|
||||
* @from: old value of header field
|
||||
* @to: new value of header field
|
||||
* @flags: bits 0-3 - size of header field
|
||||
* bit 4 - is pseudo header
|
||||
* other bits - reserved
|
||||
* 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_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_skb_[gs]et_tunnel_opt(skb, opt, size)
|
||||
* retrieve or populate tunnel options metadata
|
||||
* @skb: pointer to skb
|
||||
* @opt: pointer to raw tunnel option data
|
||||
* @size: size of @opt
|
||||
* Return: 0 on success for set, option size for get
|
||||
*/
|
||||
BPF_FUNC_skb_get_tunnel_opt,
|
||||
BPF_FUNC_skb_set_tunnel_opt,
|
||||
|
||||
/**
|
||||
* bpf_skb_change_proto(skb, proto, flags)
|
||||
* Change protocol of the skb. Currently supported is
|
||||
* v4 -> v6, v6 -> v4 transitions. The helper will also
|
||||
* resize the skb. eBPF program is expected to fill the
|
||||
* new headers via skb_store_bytes and lX_csum_replace.
|
||||
* @skb: pointer to skb
|
||||
* @proto: new skb->protocol type
|
||||
* @flags: reserved
|
||||
* Return: 0 on success or negative error
|
||||
*/
|
||||
BPF_FUNC_skb_change_proto,
|
||||
|
||||
/**
|
||||
* bpf_skb_change_type(skb, type)
|
||||
* Change packet type of skb.
|
||||
* @skb: pointer to skb
|
||||
* @type: new skb->pkt_type type
|
||||
* Return: 0 on success or negative error
|
||||
*/
|
||||
BPF_FUNC_skb_change_type,
|
||||
|
||||
/**
|
||||
* bpf_skb_under_cgroup(skb, map, index) - Check cgroup2 membership of skb
|
||||
* @skb: pointer to skb
|
||||
* @map: pointer to bpf_map in BPF_MAP_TYPE_CGROUP_ARRAY type
|
||||
* @index: index of the cgroup in the bpf_map
|
||||
* Return:
|
||||
* == 0 skb failed the cgroup2 descendant test
|
||||
* == 1 skb succeeded the cgroup2 descendant test
|
||||
* < 0 error
|
||||
*/
|
||||
BPF_FUNC_skb_under_cgroup,
|
||||
|
||||
/**
|
||||
* bpf_get_hash_recalc(skb)
|
||||
* Retrieve and possibly recalculate skb->hash.
|
||||
* @skb: pointer to skb
|
||||
* Return: hash
|
||||
*/
|
||||
BPF_FUNC_get_hash_recalc,
|
||||
|
||||
/**
|
||||
* u64 bpf_get_current_task(void)
|
||||
* Returns current task_struct
|
||||
* Return: current
|
||||
*/
|
||||
BPF_FUNC_get_current_task,
|
||||
|
||||
/**
|
||||
* bpf_probe_write_user(void *dst, void *src, int len)
|
||||
* safely attempt to write to a location
|
||||
* @dst: destination address in userspace
|
||||
* @src: source address on stack
|
||||
* @len: number of bytes to copy
|
||||
* Return: 0 on success or negative error
|
||||
*/
|
||||
BPF_FUNC_probe_write_user,
|
||||
|
||||
__BPF_FUNC_MAPPER(__BPF_ENUM_FN)
|
||||
__BPF_FUNC_MAX_ID,
|
||||
};
|
||||
#undef __BPF_ENUM_FN
|
||||
|
||||
/* All flags used by eBPF helper functions, placed here. */
|
||||
|
||||
|
|
@ -450,6 +560,31 @@ struct bpf_tunnel_key {
|
|||
__u32 tunnel_label;
|
||||
};
|
||||
|
||||
/* Generic BPF return codes which all BPF program types may support.
|
||||
* The values are binary compatible with their TC_ACT_* counter-part to
|
||||
* provide backwards compatibility with existing SCHED_CLS and SCHED_ACT
|
||||
* programs.
|
||||
*
|
||||
* XDP is handled seprately, see XDP_*.
|
||||
*/
|
||||
enum bpf_ret_code {
|
||||
BPF_OK = 0,
|
||||
/* 1 reserved */
|
||||
BPF_DROP = 2,
|
||||
/* 3-6 reserved */
|
||||
BPF_REDIRECT = 7,
|
||||
/* >127 are reserved for prog type specific return codes */
|
||||
};
|
||||
|
||||
struct bpf_sock {
|
||||
__u32 bound_dev_if;
|
||||
__u32 family;
|
||||
__u32 type;
|
||||
__u32 protocol;
|
||||
};
|
||||
|
||||
#define XDP_PACKET_HEADROOM 256
|
||||
|
||||
/* User return codes for XDP prog type.
|
||||
* A valid XDP program must return one of these defined values. All other
|
||||
* return codes are reserved for future use. Unknown return codes will result
|
||||
|
|
|
|||
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Ссылка в новой задаче