mirror/libbpf
1
0 Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-11-05 17:30:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

sync: auto-generate latest BPF helpers

Browse Source 
Latest changes to BPF helper definitions.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
This commit is contained in:
Andrii Nakryiko authored and Andrii Nakryiko committed 2026-10-02 05:41:50 -07:00
1 parent 2f80074eff
commit 4119efde76
1 file changed
+92 -15
Download Patch File Download Diff File Expand all files Collapse all files
src/bpf_helper_defs.h
+92 -15
View File
@@ -1294,8 +1294,34 @@ static long (* const bpf_setsockopt)(void *bpf_socket, int level, int optname, v
*
* * **BPF_F_ADJ_ROOM_DECAP_L3_IPV4**,
* **BPF_F_ADJ_ROOM_DECAP_L3_IPV6**:
* Indicate the new IP header version after decapsulating the outer
* IP header. Used when the inner and outer IP versions are different.
* Indicate the new IP header version after decapsulating the
* outer IP header. Used when the inner and outer IP versions
* are different. These flags only trigger a protocol change
* without clearing any tunnel-specific GSO flags.
*
* * **BPF_F_ADJ_ROOM_DECAP_L4_GRE**:
* Clear GRE tunnel GSO flags (SKB_GSO_GRE and SKB_GSO_GRE_CSUM)
* when decapsulating a GRE tunnel.
*
* * **BPF_F_ADJ_ROOM_DECAP_L4_UDP**:
* Clear UDP tunnel GSO flags (SKB_GSO_UDP_TUNNEL and
* SKB_GSO_UDP_TUNNEL_CSUM) when decapsulating a UDP tunnel.
*
* * **BPF_F_ADJ_ROOM_DECAP_IPXIP4**:
* Clear IPIP/SIT tunnel GSO flag (SKB_GSO_IPXIP4) when decapsulating
* a tunnel with an outer IPv4 header (IPv4-in-IPv4 or IPv6-in-IPv4).
*
* * **BPF_F_ADJ_ROOM_DECAP_IPXIP6**:
* Clear IPv6 encapsulation tunnel GSO flag (SKB_GSO_IPXIP6) when
* decapsulating a tunnel with an outer IPv6 header (IPv6-in-IPv6
* or IPv4-in-IPv6).
*
* When using the decapsulation flags above, the skb->encapsulation
* flag is automatically cleared if all tunnel-specific GSO flags
* (SKB_GSO_UDP_TUNNEL, SKB_GSO_UDP_TUNNEL_CSUM, SKB_GSO_GRE,
* SKB_GSO_GRE_CSUM, SKB_GSO_IPXIP4, SKB_GSO_IPXIP6) have been
* removed from the packet. This handles cases where all tunnel
* layers have been decapsulated.
*
* A call to this helper is susceptible to change the underlying
* packet buffer. Therefore, at load time, all checks on pointers
@@ -1864,6 +1890,47 @@ static long (* const bpf_skb_load_bytes_relative)(const void *skb, __u32 offset,
* Use the mark present in *params*->mark for the fib lookup.
* This option should not be used with BPF_FIB_LOOKUP_DIRECT,
* as it only has meaning for full lookups.
* **BPF_FIB_LOOKUP_VLAN**
* If the fib lookup resolves to a VLAN device whose
* parent is a real (non-VLAN) device, set
* *params*->h_vlan_proto and *params*->h_vlan_TCI from
* the VLAN device and replace *params*->ifindex with the
* parent's ifindex. *params*->h_vlan_TCI carries the VID
* only, with PCP and DEI bits zero; a consumer wanting to
* set egress priority writes PCP itself. *params*->smac is
* the VLAN device's own address, which can differ from the
* parent's. Only the immediate parent is resolved; if it
* is itself a VLAN device (QinQ) or in another namespace,
* the egress cannot be reduced to a physical device plus
* one tag and the lookup returns
* **BPF_FIB_LKUP_RET_VLAN_FAILURE** with *params*->ifindex
* left at the input. To obtain the VLAN device's own
* ifindex, repeat the lookup without
* **BPF_FIB_LOOKUP_VLAN**, re-initializing *params*
* first: output fields overwrite the inputs they share
* storage with. The swap and the vlan fields
* are written only on success; other output fields keep
* the helper's existing behaviour, so a frag-needed result
* still reports the route mtu in *params*->mtu_result.
* This flag is only valid for XDP programs; tc programs
* receive -EINVAL since they can redirect to the VLAN
* device directly.
* **BPF_FIB_LOOKUP_VLAN_INPUT**
* Treat *params*->h_vlan_proto and *params*->h_vlan_TCI
* as an input VLAN tag and run the lookup as if ingress
* had happened on the VLAN subinterface carrying that tag
* on *params*->ifindex. The VID is the low 12 bits of
* *params*->h_vlan_TCI; *params*->h_vlan_proto must be
* ETH_P_8021Q or ETH_P_8021AD in network byte order, else
* **-EINVAL**. If *params*->ifindex is itself a VLAN
* device, its inner (QinQ) subinterface is matched; for a
* bond or team, pass the master's ifindex. An unmatched
* tag, a down device, or one in another namespace returns
* **BPF_FIB_LKUP_RET_NOT_FWDED**, mirroring real ingress.
* A VID of 0 is looked up literally, so do not set this
* flag for priority-tagged frames. Cannot be combined with
* **BPF_FIB_LOOKUP_TBID** or **BPF_FIB_LOOKUP_OUTPUT**
* (returns **-EINVAL**).
*
* *ctx* is either **struct xdp_md** for XDP programs or
* **struct sk_buff** tc cls_act programs.
@@ -3236,6 +3303,7 @@ static void (* const bpf_ringbuf_discard)(void *data, __u64 flags) = (void *) 13
* * **BPF_RB_RING_SIZE**: The size of ring buffer.
* * **BPF_RB_CONS_POS**: Consumer position (can wrap around).
* * **BPF_RB_PROD_POS**: Producer(s) position (can wrap around).
* * **BPF_RB_OVERWRITE_POS**: Overwrite position (can wrap around).
*
* Data returned is just a momentary snapshot of actual values
* and could be inaccurate, so this facility should be used to
@@ -3376,12 +3444,15 @@ static long (* const bpf_get_task_stack)(struct task_struct *task, void *buf, __
* bpf_load_hdr_opt
*
* Load header option. Support reading a particular TCP header
* option for bpf program (**BPF_PROG_TYPE_SOCK_OPS**).
* option for bpf program (**BPF_PROG_TYPE_SOCK_OPS**). For the
* **bpf_tcp_ops** struct_ops, this helper can be called from the
* **parse_hdr**\ () and **write_hdr_opt**\ () operators.
*
* If *flags* is 0, it will search the option from the
* *skops*\ **->skb_data**. The comment in **struct bpf_sock_ops**
* has details on what skb_data contains under different
* *skops*\ **->op**.
* If *flags* is 0, it will search the option from the packet
* associated with the current operation. For
* **BPF_PROG_TYPE_SOCK_OPS**, the comment in
* **struct bpf_sock_ops** has details on what skb_data
* contains under different *op*.
*
* The first byte of the *searchby_res* specifies the
* kind that it wants to search.
@@ -3414,6 +3485,8 @@ static long (* const bpf_get_task_stack)(struct task_struct *task, void *buf, __
*
* * **BPF_LOAD_HDR_OPT_TCP_SYN** to search from the
* saved_syn packet or the just-received syn packet.
* Not supported by the **bpf_tcp_ops** struct_ops, which
* rejects all flags.
*
*
* Returns
@@ -3435,9 +3508,9 @@ static long (* const bpf_get_task_stack)(struct task_struct *task, void *buf, __
* packet.
*
* **-EPERM** if the helper cannot be used under the current
* *skops*\ **->op**.
* operation.
*/
static long (* const bpf_load_hdr_opt)(struct bpf_sock_ops *skops, void *searchby_res, __u32 len, __u64 flags) = (void *) 142;
static long (* const bpf_load_hdr_opt)(void *ctx, void *searchby_res, __u32 len, __u64 flags) = (void *) 142;
/*
* bpf_store_hdr_opt
@@ -3456,7 +3529,9 @@ static long (* const bpf_load_hdr_opt)(struct bpf_sock_ops *skops, void *searchb
* by searching the same option in the outgoing skb.
*
* This helper can only be called during
* **BPF_SOCK_OPS_WRITE_HDR_OPT_CB**.
* **BPF_SOCK_OPS_WRITE_HDR_OPT_CB**, or from the
* **write_hdr_opt**\ () operator of the **bpf_tcp_ops**
* struct_ops.
*
*
* Returns
@@ -3472,9 +3547,9 @@ static long (* const bpf_load_hdr_opt)(struct bpf_sock_ops *skops, void *searchb
* **-EFAULT** on failure to parse the existing header options.
*
* **-EPERM** if the helper cannot be used under the current
* *skops*\ **->op**.
* operation.
*/
static long (* const bpf_store_hdr_opt)(struct bpf_sock_ops *skops, const void *from, __u32 len, __u64 flags) = (void *) 143;
static long (* const bpf_store_hdr_opt)(void *ctx, const void *from, __u32 len, __u64 flags) = (void *) 143;
/*
* bpf_reserve_hdr_opt
@@ -3487,7 +3562,9 @@ static long (* const bpf_store_hdr_opt)(struct bpf_sock_ops *skops, const void *
* the total number of bytes will be reserved.
*
* This helper can only be called during
* **BPF_SOCK_OPS_HDR_OPT_LEN_CB**.
* **BPF_SOCK_OPS_HDR_OPT_LEN_CB**, or from the
* **hdr_opt_len**\ () operator of the **bpf_tcp_ops**
* struct_ops.
*
*
* Returns
@@ -3498,9 +3575,9 @@ static long (* const bpf_store_hdr_opt)(struct bpf_sock_ops *skops, const void *
* **-ENOSPC** if there is not enough space in the header.
*
* **-EPERM** if the helper cannot be used under the current
* *skops*\ **->op**.
* operation.
*/
static long (* const bpf_reserve_hdr_opt)(struct bpf_sock_ops *skops, __u32 len, __u64 flags) = (void *) 144;
static long (* const bpf_reserve_hdr_opt)(void *ctx, __u32 len, __u64 flags) = (void *) 144;
/*
* bpf_inode_storage_get