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authorJakub Kicinski <kuba@kernel.org>2024-03-11 18:06:04 -0700
committerJakub Kicinski <kuba@kernel.org>2024-03-11 18:06:04 -0700
commit5f20e6ab1f65aaaaae248e6946d5cb6d039e7de8 (patch)
tree826f8a879f1d954b00e4b07a8afe271aed02992e /tools/include/uapi
parentf095fefacdd35b4ea97dc6d88d054f2749a73d07 (diff)
parent66c8473135c62f478301a0e5b3012f203562dfa6 (diff)
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says: ==================== pull-request: bpf-next 2024-03-11 We've added 59 non-merge commits during the last 9 day(s) which contain a total of 88 files changed, 4181 insertions(+), 590 deletions(-). The main changes are: 1) Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce VM_SPARSE kind and vm_area_[un]map_pages to be used in bpf_arena, from Alexei. 2) Introduce bpf_arena which is sparse shared memory region between bpf program and user space where structures inside the arena can have pointers to other areas of the arena, and pointers work seamlessly for both user-space programs and bpf programs, from Alexei and Andrii. 3) Introduce may_goto instruction that is a contract between the verifier and the program. The verifier allows the program to loop assuming it's behaving well, but reserves the right to terminate it, from Alexei. 4) Use IETF format for field definitions in the BPF standard document, from Dave. 5) Extend struct_ops libbpf APIs to allow specify version suffixes for stuct_ops map types, share the same BPF program between several map definitions, and other improvements, from Eduard. 6) Enable struct_ops support for more than one page in trampolines, from Kui-Feng. 7) Support kCFI + BPF on riscv64, from Puranjay. 8) Use bpf_prog_pack for arm64 bpf trampoline, from Puranjay. 9) Fix roundup_pow_of_two undefined behavior on 32-bit archs, from Toke. ==================== Link: https://lore.kernel.org/r/20240312003646.8692-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/include/uapi')
-rw-r--r--tools/include/uapi/linux/bpf.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index a241f407c234..3c42b9f1bada 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -42,6 +42,7 @@
#define BPF_JSGE 0x70 /* SGE is signed '>=', GE in x86 */
#define BPF_JSLT 0xc0 /* SLT is signed, '<' */
#define BPF_JSLE 0xd0 /* SLE is signed, '<=' */
+#define BPF_JCOND 0xe0 /* conditional pseudo jumps: may_goto, goto_or_nop */
#define BPF_CALL 0x80 /* function call */
#define BPF_EXIT 0x90 /* function return */
@@ -50,6 +51,10 @@
#define BPF_XCHG (0xe0 | BPF_FETCH) /* atomic exchange */
#define BPF_CMPXCHG (0xf0 | BPF_FETCH) /* atomic compare-and-write */
+enum bpf_cond_pseudo_jmp {
+ BPF_MAY_GOTO = 0,
+};
+
/* Register numbers */
enum {
BPF_REG_0 = 0,
@@ -1004,6 +1009,7 @@ enum bpf_map_type {
BPF_MAP_TYPE_BLOOM_FILTER,
BPF_MAP_TYPE_USER_RINGBUF,
BPF_MAP_TYPE_CGRP_STORAGE,
+ BPF_MAP_TYPE_ARENA,
__MAX_BPF_MAP_TYPE
};
@@ -1333,6 +1339,10 @@ enum {
*/
#define BPF_PSEUDO_KFUNC_CALL 2
+enum bpf_addr_space_cast {
+ BPF_ADDR_SPACE_CAST = 1,
+};
+
/* flags for BPF_MAP_UPDATE_ELEM command */
enum {
BPF_ANY = 0, /* create new element or update existing */
@@ -1391,6 +1401,12 @@ enum {
/* BPF token FD is passed in a corresponding command's token_fd field */
BPF_F_TOKEN_FD = (1U << 16),
+
+/* When user space page faults in bpf_arena send SIGSEGV instead of inserting new page */
+ BPF_F_SEGV_ON_FAULT = (1U << 17),
+
+/* Do not translate kernel bpf_arena pointers to user pointers */
+ BPF_F_NO_USER_CONV = (1U << 18),
};
/* Flags for BPF_PROG_QUERY. */
@@ -1462,6 +1478,9 @@ union bpf_attr {
* BPF_MAP_TYPE_BLOOM_FILTER - the lowest 4 bits indicate the
* number of hash functions (if 0, the bloom filter will default
* to using 5 hash functions).
+ *
+ * BPF_MAP_TYPE_ARENA - contains the address where user space
+ * is going to mmap() the arena. It has to be page aligned.
*/
__u64 map_extra;