Hao Luo 3c48073226 bpf: Replace RET_XXX_OR_NULL with RET_XXX | PTR_MAYBE_NULL ... We have introduced a new type to make bpf_ret composable, by reserving high bits to represent flags. One of the flag is PTR_MAYBE_NULL, which indicates a pointer may be NULL. When applying this flag to ret_types, it means the returned value could be a NULL pointer. This patch switches the qualified arg_types to use this flag. The ret_types changed in this patch include: 1. RET_PTR_TO_MAP_VALUE_OR_NULL 2. RET_PTR_TO_SOCKET_OR_NULL 3. RET_PTR_TO_TCP_SOCK_OR_NULL 4. RET_PTR_TO_SOCK_COMMON_OR_NULL 5. RET_PTR_TO_ALLOC_MEM_OR_NULL 6. RET_PTR_TO_MEM_OR_BTF_ID_OR_NULL 7. RET_PTR_TO_BTF_ID_OR_NULL This patch doesn't eliminate the use of these names, instead it makes them aliases to 'RET_PTR_TO_XXX | PTR_MAYBE_NULL'. Signed-off-by: Hao Luo <haoluo@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211217003152.48334-4-haoluo@google.com		2021-12-18 12:48:08 -08:00
..
preload	bpf/preload: Clean up .gitignore and "clean-files" target	2021-10-20 10:39:04 -07:00
arraymap.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-10-28 10:43:58 -07:00
bloom_filter.c	bpf: Add missing map_delete_elem method to bloom filter map	2021-11-01 14:22:44 -07:00
bpf_inode_storage.c	bpf: Fix spelling mistakes	2021-05-24 21:13:05 -07:00
bpf_iter.c	bpf: Add bpf_loop helper	2021-11-30 10:56:28 -08:00
bpf_local_storage.c	bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]	2021-02-26 11:51:48 -08:00
bpf_lru_list.c	bpf_lru_list: Read double-checked variable once without lock	2021-02-10 15:54:26 -08:00
bpf_lru_list.h	bpf: Fix a typo "inacitve" -> "inactive"	2020-04-06 21:54:10 +02:00
bpf_lsm.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-06-17 11:54:56 -07:00
bpf_struct_ops_types.h	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpf_struct_ops.c	bpf: Rename btf_member accessors.	2021-12-02 11:18:34 -08:00
bpf_task_storage.c	bpf: Introduce btf_tracing_ids	2021-11-12 10:19:09 -08:00
btf.c	bpf: Allow access to int pointer arguments in tracing programs	2021-12-13 09:24:21 -08:00
cgroup.c	bpf: Forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs	2021-11-15 20:35:58 -08:00
core.c	bpf, docs: Prune all references to "internal BPF"	2021-11-30 10:52:11 -08:00
cpumap.c	bpf: Let bpf_warn_invalid_xdp_action() report more info	2021-12-13 22:28:27 +01:00
devmap.c	bpf: Let bpf_warn_invalid_xdp_action() report more info	2021-12-13 22:28:27 +01:00
disasm.c	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
disasm.h	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
dispatcher.c
hashtab.c	bpf: Replace callers of BPF_CAST_CALL with proper function typedef	2021-09-28 16:27:18 -07:00
helpers.c	bpf: Replace RET_XXX_OR_NULL with RET_XXX | PTR_MAYBE_NULL	2021-12-18 12:48:08 -08:00
inode.c	bpf: Fix regression on BPF_OBJ_GET with non-O_RDWR flags	2021-06-22 14:57:43 +02:00
Kconfig	bpf: Disallow unprivileged bpf by default	2021-11-01 17:06:47 +01:00
local_storage.c	bpf: Increase supported cgroup storage value size	2021-07-27 15:59:29 -07:00
lpm_trie.c	bpf: Allow RCU-protected lookups to happen from bh context	2021-06-24 19:41:15 +02:00
Makefile	bpf: Prepare relo_core.c for kernel duty.	2021-12-02 11:18:34 -08:00
map_in_map.c	bpf: Remember BTF of inner maps.	2021-07-15 22:31:10 +02:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: Implement link_query callbacks in map element iterators	2020-08-21 14:01:39 -07:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
net_namespace.c	bpf: Add support for forced LINK_DETACH command	2020-08-01 20:38:28 -07:00
offload.c
percpu_freelist.c	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Eliminate rlimit-based memory accounting for queue_stack_maps maps	2020-12-02 18:32:46 -08:00
reuseport_array.c	bpf: Fix spelling mistakes	2021-05-24 21:13:05 -07:00
ringbuf.c	bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()	2021-06-28 15:57:46 +02:00
stackmap.c	bpf: Introduce btf_tracing_ids	2021-11-12 10:19:09 -08:00
syscall.c	add missing bpf-cgroup.h includes	2021-12-16 14:57:09 -08:00
sysfs_btf.c	bpf: Load and verify kernel module BTFs	2020-11-10 15:25:53 -08:00
task_iter.c	bpf: Introduce btf_tracing_ids	2021-11-12 10:19:09 -08:00
tnum.c	bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul	2021-06-01 13:34:15 +02:00
trampoline.c	bpf: Add get_func_[arg|ret|arg_cnt] helpers	2021-12-13 09:25:59 -08:00
verifier.c	bpf: Replace RET_XXX_OR_NULL with RET_XXX | PTR_MAYBE_NULL	2021-12-18 12:48:08 -08:00