vdpa: add .gitignore

[mirror_iproute2.git] / include / bpf_api.h

diff --git a/include/bpf_api.h b/include/bpf_api.h
index 0f278f0c2614499fef3ce193993138ce39592308..82c47089f61492b3c66bc531de2e0b31cfd51da3 100644 (file)
--- a/include/bpf_api.h
+++ b/include/bpf_api.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __BPF_API__
 #define __BPF_API__
 
@@ -18,6 +19,19 @@
 
 #include "bpf_elf.h"
 
+/** libbpf pin type. */
+enum libbpf_pin_type {
+       LIBBPF_PIN_NONE,
+       /* PIN_BY_NAME: pin maps by name (in /sys/fs/bpf by default) */
+       LIBBPF_PIN_BY_NAME,
+};
+
+/** Type helper macros. */
+
+#define __uint(name, val) int (*name)[val]
+#define __type(name, val) typeof(val) *name
+#define __array(name, val) typeof(val) *name[]
+
 /** Misc macros. */
 
 #ifndef __stringify
@@ -72,6 +86,11 @@
        __section(__stringify(ID) "/" __stringify(KEY))
 #endif
 
+#ifndef __section_xdp_entry
+# define __section_xdp_entry                                           \
+       __section(ELF_SECTION_PROG)
+#endif
+
 #ifndef __section_cls_entry
 # define __section_cls_entry                                           \
        __section(ELF_SECTION_CLASSIFIER)
@@ -82,6 +101,11 @@
        __section(ELF_SECTION_ACTION)
 #endif
 
+#ifndef __section_lwt_entry
+# define __section_lwt_entry                                           \
+       __section(ELF_SECTION_PROG)
+#endif
+
 #ifndef __section_license
 # define __section_license                                             \
        __section(ELF_SECTION_LICENSE)
@@ -99,51 +123,6 @@
        char ____license[] __section_license = NAME
 #endif
 
-#ifndef __BPF_MAP
-# define __BPF_MAP(NAME, TYPE, ID, SIZE_KEY, SIZE_VALUE, PIN, MAX_ELEM)        \
-       struct bpf_elf_map __section_maps NAME = {                      \
-               .type           = (TYPE),                               \
-               .id             = (ID),                                 \
-               .size_key       = (SIZE_KEY),                           \
-               .size_value     = (SIZE_VALUE),                         \
-               .pinning        = (PIN),                                \
-               .max_elem       = (MAX_ELEM),                           \
-       }
-#endif
-
-#ifndef BPF_HASH
-# define BPF_HASH(NAME, ID, SIZE_KEY, SIZE_VALUE, PIN, MAX_ELEM)       \
-       __BPF_MAP(NAME, BPF_MAP_TYPE_HASH, ID, SIZE_KEY, SIZE_VALUE,    \
-                 PIN, MAX_ELEM)
-#endif
-
-#ifndef BPF_ARRAY
-# define BPF_ARRAY(NAME, ID, SIZE_VALUE, PIN, MAX_ELEM)                        \
-       __BPF_MAP(NAME, BPF_MAP_TYPE_ARRAY, ID, sizeof(uint32_t),       \
-                 SIZE_VALUE, PIN, MAX_ELEM)
-#endif
-
-#ifndef BPF_ARRAY2
-# define BPF_ARRAY2(NAME, ID, PIN, MAX_ELEM)                           \
-       BPF_ARRAY(NAME, ID, sizeof(uint16_t), PIN, MAX_ELEM)
-#endif
-
-#ifndef BPF_ARRAY4
-# define BPF_ARRAY4(NAME, ID, PIN, MAX_ELEM)                           \
-       BPF_ARRAY(NAME, ID, sizeof(uint32_t), PIN, MAX_ELEM)
-#endif
-
-#ifndef BPF_ARRAY8
-# define BPF_ARRAY8(NAME, ID, PIN, MAX_ELEM)                           \
-       BPF_ARRAY(NAME, ID, sizeof(uint64_t), PIN, MAX_ELEM)
-#endif
-
-#ifndef BPF_PROG_ARRAY
-# define BPF_PROG_ARRAY(NAME, ID, PIN, MAX_ELEM)                       \
-       __BPF_MAP(NAME, BPF_MAP_TYPE_PROG_ARRAY, ID, sizeof(uint32_t),  \
-                 sizeof(uint32_t), PIN, MAX_ELEM)
-#endif
-
 /** Classifier helper */
 
 #ifndef BPF_H_DEFAULT
@@ -152,9 +131,14 @@
 
 /** BPF helper functions for tc. Individual flags are in linux/bpf.h */
 
+#ifndef __BPF_FUNC
+# define __BPF_FUNC(NAME, ...)                                         \
+       (* NAME)(__VA_ARGS__) __maybe_unused
+#endif
+
 #ifndef BPF_FUNC
 # define BPF_FUNC(NAME, ...)                                           \
-       (* NAME)(__VA_ARGS__) __maybe_unused = (void *) BPF_FUNC_##NAME
+       __BPF_FUNC(NAME, __VA_ARGS__) = (void *) BPF_FUNC_##NAME
 #endif
 
 /* Map access/manipulation */
@@ -192,10 +176,15 @@ static void BPF_FUNC(tail_call, struct __sk_buff *skb, void *map,
 
 /* System helpers */
 static uint32_t BPF_FUNC(get_smp_processor_id);
+static uint32_t BPF_FUNC(get_numa_node_id);
 
 /* Packet misc meta data */
 static uint32_t BPF_FUNC(get_cgroup_classid, struct __sk_buff *skb);
+static int BPF_FUNC(skb_under_cgroup, void *map, uint32_t index);
+
 static uint32_t BPF_FUNC(get_route_realm, struct __sk_buff *skb);
+static uint32_t BPF_FUNC(get_hash_recalc, struct __sk_buff *skb);
+static uint32_t BPF_FUNC(set_hash_invalid, struct __sk_buff *skb);
 
 /* Packet redirection */
 static int BPF_FUNC(redirect, int ifindex, uint32_t flags);
@@ -214,6 +203,20 @@ static int BPF_FUNC(l4_csum_replace, struct __sk_buff *skb, uint32_t off,
                    uint32_t from, uint32_t to, uint32_t flags);
 static int BPF_FUNC(csum_diff, const void *from, uint32_t from_size,
                    const void *to, uint32_t to_size, uint32_t seed);
+static int BPF_FUNC(csum_update, struct __sk_buff *skb, uint32_t wsum);
+
+static int BPF_FUNC(skb_change_type, struct __sk_buff *skb, uint32_t type);
+static int BPF_FUNC(skb_change_proto, struct __sk_buff *skb, uint32_t proto,
+                   uint32_t flags);
+static int BPF_FUNC(skb_change_tail, struct __sk_buff *skb, uint32_t nlen,
+                   uint32_t flags);
+
+static int BPF_FUNC(skb_pull_data, struct __sk_buff *skb, uint32_t len);
+
+/* Event notification */
+static int __BPF_FUNC(skb_event_output, struct __sk_buff *skb, void *map,
+                     uint64_t index, const void *data, uint32_t size) =
+                     (void *) BPF_FUNC_perf_event_output;
 
 /* Packet vlan encap/decap */
 static int BPF_FUNC(skb_vlan_push, struct __sk_buff *skb, uint16_t proto,