kfunc: Update kfuncs for kernel v6.11

This commit does the following: * Update the vmlinux blob to v6.11 * Add pages for new kfuncs * Update cilium/ebpf to experimental version with decl tag support * Use the kernels bpf_kfunc decl tag to detect missing kfuncs Signed-off-by: Dylan Reimerink <[email protected]>
isovalent · Sep 26, 2024 · e9cdbf7 · e9cdbf7
1 parent d4c53bc
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Showing 50 changed files with 846 additions and 32 deletions.
diff --git a/.aspell.en.pws b/.aspell.en.pws
@@ -209,3 +209,4 @@ UID
 GID
 decl
 inlining
+backend
diff --git a/data/feature-versions.yaml b/data/feature-versions.yaml
@@ -2062,3 +2062,27 @@
     - name: bpf_arena_free_pages
       version: v6.9
       commit: 317460317a02a1af512697e6e964298dedd8a163
+    - name: bpf_iter_bits_destroy
+      version: v6.11
+      commit: 4665415975b0827e9646cab91c61d02a6b364d59
+    - name: bpf_iter_bits_new
+      version: v6.11
+      commit: 4665415975b0827e9646cab91c61d02a6b364d59
+    - name: bpf_iter_bits_next
+      version: v6.11
+      commit: 4665415975b0827e9646cab91c61d02a6b364d59
+    - name: bpf_xdp_flow_lookup
+      version: v6.11
+      commit: 391bb6594fd3a567efb1cd3efc8136c78c4c9e31
+    - name: hid_bpf_hw_output_report
+      version: v6.10
+      commit: 5599f80196612efde96dbe6ef18f6ecc0cb4ba19
+    - name: hid_bpf_input_report
+      version: v6.10
+      commit: 9be50ac30a83896a753ab9f64e941763bb7900be
+    - name: hid_bpf_try_input_report
+      version: v6.11
+      commit: 9acbb7ba4589d4715141d4e14230a828ddc95f3d
+    - name: bpf_sk_assign_tcp_reqsk
+      version: v6.11
+      commit: e472f88891abbc535a5e16a68a104073985f6061
diff --git a/data/kfuncs.yaml b/data/kfuncs.yaml
@@ -188,6 +188,12 @@ sets:
       - name: bpf_wq_start
       - name: bpf_preempt_disable
       - name: bpf_preempt_enable
+      - name: bpf_iter_bits_new
+        flags: [KF_ITER_NEW]
+      - name: bpf_iter_bits_next
+        flags: [KF_ITER_NEXT, KF_RET_NULL]
+      - name: bpf_iter_bits_destroy
+        flags: [KF_ITER_DESTROY]
     program_types:
       - BPF_PROG_TYPE_UNSPEC
 
@@ -356,6 +362,17 @@ sets:
     funcs:
       - name: hid_bpf_get_data
         flags: [KF_RET_NULL]
+      - name: hid_bpf_allocate_context
+        flags: [KF_ACQUIRE, KF_RET_NULL, KF_SLEEPABLE]
+      - name: hid_bpf_release_context
+        flags: [KF_RELEASE, KF_SLEEPABLE]
+      - name: hid_bpf_hw_request
+        flags: [KF_SLEEPABLE]
+      - name: hid_bpf_hw_output_report
+        flags: [KF_SLEEPABLE]
+      - name: hid_bpf_input_report
+        flags: [KF_SLEEPABLE]
+      - name: hid_bpf_try_input_report
     program_types:
       - BPF_PROG_TYPE_TRACING
       - BPF_PROG_TYPE_LSM
@@ -368,6 +385,8 @@ sets:
       - name: hid_bpf_release_context
         flags: [KF_RELEASE]
       - name: hid_bpf_hw_request
+      - name: hid_bpf_hw_output_report
+      - name: hid_bpf_input_report
     program_types:
       - BPF_PROG_TYPE_SYSCALL
 
@@ -410,3 +429,17 @@ sets:
         flags: [KF_TRUSTED_ARGS, KF_SLEEPABLE]
     program_types:
       - BPF_PROG_TYPE_UNSPEC
+
+  bpf_kfunc_check_set_tcp_reqsk:
+    funcs:
+      - name: bpf_sk_assign_tcp_reqsk
+        flags: [KF_TRUSTED_ARGS]
+    program_types:
+      - BPF_PROG_TYPE_SCHED_CLS
+
+  nf_ft_kfunc_set:
+    funcs:
+      - name: bpf_xdp_flow_lookup
+        flags: [KF_TRUSTED_ARGS, KF_RET_NULL]
+    program_types:
+      - BPF_PROG_TYPE_XDP
diff --git a/docs/linux/concepts/dynptrs.md b/docs/linux/concepts/dynptrs.md
@@ -26,6 +26,7 @@ The following functions create or manipulate dynptrs:
 * [`bpf_dynptr_clone`](../kfuncs/bpf_dynptr_clone.md) - Clones a dynptr. The new dynptr points to the same underlying data and has the same metadata as the original dynptr.
 
 The following functions are not dynptr centric, but do require dynptrs in their arguments:
+
 * [`bpf_ringbuf_submit_dynptr`](../helper-function/bpf_ringbuf_submit_dynptr.md) - Submits a dynptr to a ring buffer.
 * [`bpf_ringbuf_discard_dynptr`](../helper-function/bpf_ringbuf_discard_dynptr.md) - Discards a dynptr from a ring buffer.
 * [`bpf_user_ringbuf_drain`](../helper-function/bpf_user_ringbuf_drain.md) - Drains samples from a user ring buffer and invokes a callback for each sample, with a dynptr containing the sample data.

diff --git a/docs/linux/kfuncs/SUMMARY.md b/docs/linux/kfuncs/SUMMARY.md
@@ -84,6 +84,10 @@
   - [`bpf_iter_task_vma_new`](bpf_iter_task_vma_new.md)
   - [`bpf_iter_task_vma_next`](bpf_iter_task_vma_next.md)
   - [`bpf_iter_task_vma_destroy`](bpf_iter_task_vma_destroy.md)
+- Kfuncs for bits
+  - [`bpf_iter_bits_new`](bpf_iter_bits_new.md)
+  - [`bpf_iter_bits_next`](bpf_iter_bits_next.md)
+  - [`bpf_iter_bits_destroy`](bpf_iter_bits_destroy.md)
 - Kfuncs for open coded task cGroup iterators
   - [`bpf_iter_css_task_new`](bpf_iter_css_task_new.md)
   - [`bpf_iter_css_task_next`](bpf_iter_css_task_next.md)
@@ -160,6 +164,8 @@
 - Foo over UDP KFuncs
   - [`bpf_skb_set_fou_encap`](bpf_skb_set_fou_encap.md)
   - [`bpf_skb_get_fou_encap`](bpf_skb_get_fou_encap.md)
+- SYNCookie KFuncs
+  - [`bpf_sk_assign_tcp_reqsk`](bpf_sk_assign_tcp_reqsk.md)
 - Connection tracking KFuncs
   - [`bpf_ct_set_nat_info`](bpf_ct_set_nat_info.md)
   - [`bpf_xdp_ct_alloc`](bpf_xdp_ct_alloc.md)
@@ -172,6 +178,8 @@
   - [`bpf_ct_change_timeout`](bpf_ct_change_timeout.md)
   - [`bpf_ct_set_status`](bpf_ct_set_status.md)
   - [`bpf_ct_change_status`](bpf_ct_change_status.md)
+- XDP KFuncs
+  - [`bpf_xdp_flow_lookup`](bpf_xdp_flow_lookup.md)
 - XFRM KFuncs
   - [`bpf_skb_get_xfrm_info`](bpf_skb_get_xfrm_info.md)
   - [`bpf_skb_set_xfrm_info`](bpf_skb_set_xfrm_info.md)
@@ -183,6 +191,9 @@
   - [`hid_bpf_allocate_context`](hid_bpf_allocate_context.md)
   - [`hid_bpf_release_context`](hid_bpf_release_context.md)
   - [`hid_bpf_hw_request`](hid_bpf_hw_request.md)
+  - [`hid_bpf_hw_output_report`](hid_bpf_hw_output_report.md)
+  - [`hid_bpf_input_report`](hid_bpf_input_report.md)
+  - [`hid_bpf_try_input_report`](hid_bpf_try_input_report.md)
 - KProbe session Kfuncs
   - [`bpf_session_cookie`](bpf_session_cookie.md)
   - [`bpf_session_is_return`](bpf_session_is_return.md)

diff --git a/docs/linux/kfuncs/bpf_crypto_decrypt.md b/docs/linux/kfuncs/bpf_crypto_decrypt.md
@@ -27,7 +27,7 @@ Decrypts provided buffer using IV data and the crypto context. Crypto context mu
 Return 0 on success, or a negative error code on failure.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_crypto_decrypt(struct bpf_crypto_ctx *ctx, const struct bpf_dynptr_kern *src, const struct bpf_dynptr_kern *dst, const struct bpf_dynptr_kern *siv)`
+`#!c int bpf_crypto_decrypt(struct bpf_crypto_ctx *ctx, const struct bpf_dynptr *src, const struct bpf_dynptr *dst, const struct bpf_dynptr *siv__nullable)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_crypto_encrypt.md b/docs/linux/kfuncs/bpf_crypto_encrypt.md
@@ -27,7 +27,7 @@ Encrypts provided buffer using IV data and the crypto context. Crypto context mu
 Return 0 on success, or a negative error code on failure.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_crypto_encrypt(struct bpf_crypto_ctx *ctx, const struct bpf_dynptr_kern *src, const struct bpf_dynptr_kern *dst, const struct bpf_dynptr_kern *siv)`
+`#!c int bpf_crypto_encrypt(struct bpf_crypto_ctx *ctx, const struct bpf_dynptr *src, const struct bpf_dynptr *dst, const struct bpf_dynptr *siv__nullable)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_adjust.md b/docs/linux/kfuncs/bpf_dynptr_adjust.md
@@ -15,7 +15,7 @@ Adjusts the dynptr to reflect the new [start, end) interval.
 It advances the offset of the dynptr by `start` bytes, and if end is less than the size of the dynptr, then this will trim the dynptr accordingly.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_dynptr_adjust(struct bpf_dynptr_kern *ptr, u32 start, u32 end)`
+`#!c int bpf_dynptr_adjust(const struct bpf_dynptr *p, u32 start, u32 end)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_clone.md b/docs/linux/kfuncs/bpf_dynptr_clone.md
@@ -22,7 +22,7 @@ Any writes to a dynptr will be reflected across all instances (by 'instance', th
 Changing the view of the dynptr (for example advancing the offset or trimming the size) will only affect that dynptr and not affect any other instances.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_dynptr_clone(struct bpf_dynptr_kern *ptr, struct bpf_dynptr_kern *clone__uninit)`
+`#!c int bpf_dynptr_clone(const struct bpf_dynptr *p, struct bpf_dynptr *clone__uninit)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_from_skb.md b/docs/linux/kfuncs/bpf_dynptr_from_skb.md
@@ -17,7 +17,7 @@ For bpf program types that don't support writes on skb data, the dynptr is read-
 For reads and writes through the [`bpf_dynptr_read()`](../helper-function/bpf_dynptr_read.md) and [`bpf_dynptr_write()`](../helper-function/bpf_dynptr_write.md) interfaces, reading and writing from/to data in the head as well as from/to non-linear paged buffers is supported. Data slices through the bpf_dynptr_data API are not supported; instead [`bpf_dynptr_slice()`](bpf_dynptr_slice.md) and [`bpf_dynptr_slice_rdwr()`](bpf_dynptr_slice_rdwr.md) should be used.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_dynptr_from_skb(struct sk_buff *skb, u64 flags, struct bpf_dynptr_kern *ptr__uninit)`
+`#!c int bpf_dynptr_from_skb(struct __sk_buff *s, u64 flags, struct bpf_dynptr *ptr__uninit)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_from_xdp.md b/docs/linux/kfuncs/bpf_dynptr_from_xdp.md
@@ -15,7 +15,7 @@ Get dynptrs whose underlying pointer points to a xdp_buff.
 For reads and writes on the dynptr, this includes reading/writing from/to and across fragments. Data slices through the [`bpf_dynptr_data`](../helper-function/bpf_dynptr_data.md) API are not supported; instead [`bpf_dynptr_slice()`](bpf_dynptr_slice.md) and [`bpf_dynptr_slice_rdwr()`](bpf_dynptr_slice_rdwr.md) should be used.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_dynptr_from_xdp(struct xdp_buff *xdp, u64 flags, struct bpf_dynptr_kern *ptr__uninit)`
+`#!c int bpf_dynptr_from_xdp(struct xdp_md *x, u64 flags, struct bpf_dynptr *ptr__uninit)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_is_null.md b/docs/linux/kfuncs/bpf_dynptr_is_null.md
@@ -16,7 +16,7 @@ Returns true if the dynptr is `null` / invalid (determined by whether `ptr->data
 the dynptr is a valid dynptr.
 
 <!-- [KFUNC_DEF] -->
-`#!c bool bpf_dynptr_is_null(struct bpf_dynptr_kern *ptr)`
+`#!c bool bpf_dynptr_is_null(const struct bpf_dynptr *p)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_is_rdonly.md b/docs/linux/kfuncs/bpf_dynptr_is_rdonly.md
@@ -15,7 +15,7 @@ Returns true if the dynptr is read-only
 `bpf_dynptr_is_rdonly` returns true if the dynptr is read-only, else false if the dynptr is read-writable. If the dynptr is null / invalid, false is returned by default.
 
 <!-- [KFUNC_DEF] -->
-`#!c bool bpf_dynptr_is_rdonly(struct bpf_dynptr_kern *ptr)`
+`#!c bool bpf_dynptr_is_rdonly(const struct bpf_dynptr *p)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_size.md b/docs/linux/kfuncs/bpf_dynptr_size.md
@@ -13,7 +13,7 @@ Returns the number of usable bytes in a dynptr.
 ## Definition
 
 <!-- [KFUNC_DEF] -->
-`#!c __u32 bpf_dynptr_size(const struct bpf_dynptr_kern *ptr)`
+`#!c __u32 bpf_dynptr_size(const struct bpf_dynptr *p)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_dynptr_slice.md b/docs/linux/kfuncs/bpf_dynptr_slice.md
@@ -15,7 +15,7 @@ Get a pointer to dynptr data up to `len` bytes for read only access.
 If the dynptr doesn't have continuous data up to `len` bytes, return NULL.
 
 <!-- [KFUNC_DEF] -->
-`#!c void *bpf_dynptr_slice(const struct bpf_dynptr_kern *ptr, u32 offset, void *buffer__opt, u32 buffer__szk)`
+`#!c void *bpf_dynptr_slice(const struct bpf_dynptr *p, u32 offset, void *buffer__opt, u32 buffer__szk)`
 
 !!! note
 	The pointer returned by the kfunc may be NULL. Hence, it forces the user to do a NULL check on the pointer returned 

diff --git a/docs/linux/kfuncs/bpf_dynptr_slice_rdwr.md b/docs/linux/kfuncs/bpf_dynptr_slice_rdwr.md
@@ -15,7 +15,7 @@ Get a pointer to dynptr data up to `len` bytes for read write access.
 If the dynptr doesn't have continuous data up to `len` bytes, or the dynptr is read only, return `NULL`.
 
 <!-- [KFUNC_DEF] -->
-`#!c void *bpf_dynptr_slice_rdwr(const struct bpf_dynptr_kern *ptr, u32 offset, void *buffer__opt, u32 buffer__szk)`
+`#!c void *bpf_dynptr_slice_rdwr(const struct bpf_dynptr *p, u32 offset, void *buffer__opt, u32 buffer__szk)`
 
 !!! note
 	The pointer returned by the kfunc may be NULL. Hence, it forces the user to do a NULL check on the pointer returned 

diff --git a/docs/linux/kfuncs/bpf_get_file_xattr.md b/docs/linux/kfuncs/bpf_get_file_xattr.md
@@ -21,7 +21,7 @@ For security reasons, only `name__str` with prefix "user." is allowed.
 0 on success, a negative value on error.
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_get_file_xattr(struct file *file, const char *name__str, struct bpf_dynptr_kern *value_ptr)`
+`#!c int bpf_get_file_xattr(struct file *file, const char *name__str, struct bpf_dynptr *value_p)`
 
 !!! note
     This function may sleep, and therefore can only be used from [sleepable programs](../syscall/BPF_PROG_LOAD.md/#bpf_f_sleepable).

diff --git a/docs/linux/kfuncs/bpf_get_fsverity_digest.md b/docs/linux/kfuncs/bpf_get_fsverity_digest.md
@@ -13,7 +13,7 @@ Get the `fs-verity` digest of a file.
 ## Definition
 
 <!-- [KFUNC_DEF] -->
-`#!c int bpf_get_fsverity_digest(struct file *file, struct bpf_dynptr_kern *digest_ptr)`
+`#!c int bpf_get_fsverity_digest(struct file *file, struct bpf_dynptr *digest_p)`
 <!-- [/KFUNC_DEF] -->
 
 ## Usage

diff --git a/docs/linux/kfuncs/bpf_iter_bits_destroy.md b/docs/linux/kfuncs/bpf_iter_bits_destroy.md
@@ -0,0 +1,57 @@
+---
+title: "KFunc 'bpf_iter_bits_destroy'"
+description: "This page documents the 'bpf_iter_bits_destroy' eBPF kfunc, including its definition, usage, program types that can use it, and examples."
+---
+# KFunc `bpf_iter_bits_destroy`
+
+<!-- [FEATURE_TAG](bpf_iter_bits_destroy) -->
+[:octicons-tag-24: v6.11](https://github.com/torvalds/linux/commit/4665415975b0827e9646cab91c61d02a6b364d59)
+<!-- [/FEATURE_TAG] -->
+
+Destroy a `bpf_iter_bits`
+
+## Definition
+
+Destroy the resource associated with the `bpf_iter_bits`.
+
+**Parameters**
+
+`it`: The `bpf_iter_bits` to be destroyed
+
+<!-- [KFUNC_DEF] -->
+`#!c void bpf_iter_bits_destroy(struct bpf_iter_bits *it)`
+<!-- [/KFUNC_DEF] -->
+
+## Usage
+
+!!! example "Docs could be improved"
+    This part of the docs is incomplete, contributions are very welcome
+
+### Program types
+
+The following program types can make use of this kfunc:
+
+<!-- [KFUNC_PROG_REF] -->
+- [`BPF_PROG_TYPE_CGROUP_SKB`](../program-type/BPF_PROG_TYPE_CGROUP_SKB.md)
+- [`BPF_PROG_TYPE_CGROUP_SOCK_ADDR`](../program-type/BPF_PROG_TYPE_CGROUP_SOCK_ADDR.md)
+- [`BPF_PROG_TYPE_LSM`](../program-type/BPF_PROG_TYPE_LSM.md)
+- [`BPF_PROG_TYPE_LWT_IN`](../program-type/BPF_PROG_TYPE_LWT_IN.md)
+- [`BPF_PROG_TYPE_LWT_OUT`](../program-type/BPF_PROG_TYPE_LWT_OUT.md)
+- [`BPF_PROG_TYPE_LWT_SEG6LOCAL`](../program-type/BPF_PROG_TYPE_LWT_SEG6LOCAL.md)
+- [`BPF_PROG_TYPE_LWT_XMIT`](../program-type/BPF_PROG_TYPE_LWT_XMIT.md)
+- [`BPF_PROG_TYPE_NETFILTER`](../program-type/BPF_PROG_TYPE_NETFILTER.md)
+- [`BPF_PROG_TYPE_SCHED_ACT`](../program-type/BPF_PROG_TYPE_SCHED_ACT.md)
+- [`BPF_PROG_TYPE_SCHED_CLS`](../program-type/BPF_PROG_TYPE_SCHED_CLS.md)
+- [`BPF_PROG_TYPE_SK_SKB`](../program-type/BPF_PROG_TYPE_SK_SKB.md)
+- [`BPF_PROG_TYPE_SOCKET_FILTER`](../program-type/BPF_PROG_TYPE_SOCKET_FILTER.md)
+- [`BPF_PROG_TYPE_STRUCT_OPS`](../program-type/BPF_PROG_TYPE_STRUCT_OPS.md)
+- [`BPF_PROG_TYPE_SYSCALL`](../program-type/BPF_PROG_TYPE_SYSCALL.md)
+- [`BPF_PROG_TYPE_TRACING`](../program-type/BPF_PROG_TYPE_TRACING.md)
+- [`BPF_PROG_TYPE_XDP`](../program-type/BPF_PROG_TYPE_XDP.md)
+<!-- [/KFUNC_PROG_REF] -->
+
+### Example
+
+!!! example "Docs could be improved"
+    This part of the docs is incomplete, contributions are very welcome
+
diff --git a/docs/linux/kfuncs/bpf_iter_bits_new.md b/docs/linux/kfuncs/bpf_iter_bits_new.md
@@ -0,0 +1,65 @@
+---
+title: "KFunc 'bpf_iter_bits_new'"
+description: "This page documents the 'bpf_iter_bits_new' eBPF kfunc, including its definition, usage, program types that can use it, and examples."
+---
+# KFunc `bpf_iter_bits_new`
+
+<!-- [FEATURE_TAG](bpf_iter_bits_new) -->
+[:octicons-tag-24: v6.11](https://github.com/torvalds/linux/commit/4665415975b0827e9646cab91c61d02a6b364d59)
+<!-- [/FEATURE_TAG] -->
+
+Initialize a new bits iterator for a given memory area
+
+## Definition
+
+This function initializes a new `bpf_iter_bits` structure for iterating over a memory area which is specified by the `unsafe_ptr__ign` and `nr_words`. It copies the data of the memory area to the newly created bpf_iter_bits `it` for subsequent iteration operations.
+
+**Parameters**
+
+`it`: The new bpf_iter_bits to be created
+
+`unsafe_ptr__ign`: A pointer pointing to a memory area to be iterated over
+
+`nr_words`: The size of the specified memory area, measured in 8-byte units. Due to the limitation of memalloc, it can't be greater than 512.
+
+**Return**
+
+On success, 0 is returned. On failure, `ERR` is returned.
+
+<!-- [KFUNC_DEF] -->
+`#!c int bpf_iter_bits_new(struct bpf_iter_bits *it, const u64 *unsafe_ptr__ign, u32 nr_words)`
+<!-- [/KFUNC_DEF] -->
+
+## Usage
+
+!!! example "Docs could be improved"
+    This part of the docs is incomplete, contributions are very welcome
+
+### Program types
+
+The following program types can make use of this kfunc:
+
+<!-- [KFUNC_PROG_REF] -->
+- [`BPF_PROG_TYPE_CGROUP_SKB`](../program-type/BPF_PROG_TYPE_CGROUP_SKB.md)
+- [`BPF_PROG_TYPE_CGROUP_SOCK_ADDR`](../program-type/BPF_PROG_TYPE_CGROUP_SOCK_ADDR.md)
+- [`BPF_PROG_TYPE_LSM`](../program-type/BPF_PROG_TYPE_LSM.md)
+- [`BPF_PROG_TYPE_LWT_IN`](../program-type/BPF_PROG_TYPE_LWT_IN.md)
+- [`BPF_PROG_TYPE_LWT_OUT`](../program-type/BPF_PROG_TYPE_LWT_OUT.md)
+- [`BPF_PROG_TYPE_LWT_SEG6LOCAL`](../program-type/BPF_PROG_TYPE_LWT_SEG6LOCAL.md)
+- [`BPF_PROG_TYPE_LWT_XMIT`](../program-type/BPF_PROG_TYPE_LWT_XMIT.md)
+- [`BPF_PROG_TYPE_NETFILTER`](../program-type/BPF_PROG_TYPE_NETFILTER.md)
+- [`BPF_PROG_TYPE_SCHED_ACT`](../program-type/BPF_PROG_TYPE_SCHED_ACT.md)
+- [`BPF_PROG_TYPE_SCHED_CLS`](../program-type/BPF_PROG_TYPE_SCHED_CLS.md)
+- [`BPF_PROG_TYPE_SK_SKB`](../program-type/BPF_PROG_TYPE_SK_SKB.md)
+- [`BPF_PROG_TYPE_SOCKET_FILTER`](../program-type/BPF_PROG_TYPE_SOCKET_FILTER.md)
+- [`BPF_PROG_TYPE_STRUCT_OPS`](../program-type/BPF_PROG_TYPE_STRUCT_OPS.md)
+- [`BPF_PROG_TYPE_SYSCALL`](../program-type/BPF_PROG_TYPE_SYSCALL.md)
+- [`BPF_PROG_TYPE_TRACING`](../program-type/BPF_PROG_TYPE_TRACING.md)
+- [`BPF_PROG_TYPE_XDP`](../program-type/BPF_PROG_TYPE_XDP.md)
+<!-- [/KFUNC_PROG_REF] -->
+
+### Example
+
+!!! example "Docs could be improved"
+    This part of the docs is incomplete, contributions are very welcome
+
-Original file line number
+Diff line change
@@ Expand Up / @@ -209,3 +209,4 @@ UID @@
     GID
     decl
     inlining
+    backend