linux/kernel/bpf
Hou Tao 156c977c53 bpf: Remove unnecessary check when updating LPM trie
When "node->prefixlen == matchlen" is true, it means that the node is
fully matched. If "node->prefixlen == key->prefixlen" is false, it means
the prefix length of key is greater than the prefix length of node,
otherwise, matchlen will not be equal with node->prefixlen. However, it
also implies that the prefix length of node must be less than
max_prefixlen.

Therefore, "node->prefixlen == trie->max_prefixlen" will always be false
when the check of "node->prefixlen == key->prefixlen" returns false.
Remove this unnecessary comparison.

Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20241206110622.1161752-2-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-12-06 09:14:25 -08:00
..
preload
arena.c bpf: Do not alloc arena on unsupported arches 2024-11-15 08:10:13 -08:00
arraymap.c bpf: Prevent tailcall infinite loop caused by freplace 2024-10-16 09:21:18 -07:00
bloom_filter.c bpf: Check bloom filter map value size 2024-03-27 09:56:17 -07:00
bpf_cgrp_storage.c bpf: Add "bool swap_uptrs" arg to bpf_local_storage_update() and bpf_selem_alloc() 2024-10-24 10:25:59 -07:00
bpf_inode_storage.c bpf-next-bpf-next-6.13 2024-11-21 08:11:04 -08:00
bpf_iter.c [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
bpf_local_storage.c bpf: Add uptr support in the map_value of the task local storage. 2024-10-24 10:25:59 -07:00
bpf_lru_list.c
bpf_lru_list.h
bpf_lsm.c bpf, lsm: Remove getlsmprop hooks BTF IDs 2024-11-25 14:14:17 -08:00
bpf_struct_ops.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
bpf_task_storage.c bpf-next-bpf-next-6.13 2024-11-21 08:11:04 -08:00
btf.c bpf: Mark raw_tp arguments with PTR_MAYBE_NULL 2024-11-04 11:37:36 -08:00
btf_iter.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
btf_relocate.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
cgroup.c Summary 2024-11-22 20:36:11 -08:00
cgroup_iter.c
core.c bpf-next-bpf-next-6.13 2024-11-21 08:11:04 -08:00
cpumap.c bpf, cpumap: Move xdp:xdp_cpumap_kthread tracepoint before rcv 2024-09-11 16:32:11 +02:00
cpumask.c bpf: Allow invoking kfuncs from BPF_PROG_TYPE_SYSCALL progs 2024-04-05 10:56:09 -07:00
crypto.c bpf: crypto: make state and IV dynptr nullable 2024-06-13 16:33:04 -07:00
devmap.c bpf: fix OOB devmap writes when deleting elements 2024-11-25 14:25:48 -08:00
disasm.c bpf: add special internal-only MOV instruction to resolve per-CPU addrs 2024-04-03 10:29:55 -07:00
disasm.h
dispatcher.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
hashtab.c bpf: Call free_htab_elem() after htab_unlock_bucket() 2024-11-11 08:18:30 -08:00
helpers.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2024-11-13 12:52:51 -08:00
inode.c bpf: Preserve param->string when parsing mount options 2024-10-22 12:56:38 -07:00
Kconfig bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of 2024-05-14 00:36:29 -07:00
kmem_cache_iter.c bpf: Add open coded version of kmem_cache iterator 2024-11-01 11:08:32 -07:00
link_iter.c
local_storage.c bpf: Replace 8 seq_puts() calls by seq_putc() calls 2024-07-29 12:53:00 -07:00
log.c bpf: Fix print_reg_state's constant scalar dump 2024-10-17 11:06:34 -07:00
lpm_trie.c bpf: Remove unnecessary check when updating LPM trie 2024-12-06 09:14:25 -08:00
Makefile bpf: Introduce range_tree data structure and use it in bpf arena 2024-11-13 13:52:45 -08:00
map_in_map.c bpf: switch maps to CLASS(fd, ...) 2024-08-13 15:58:17 -07:00
map_in_map.h
map_iter.c
memalloc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2024-11-13 12:52:51 -08:00
mmap_unlock_work.h
mprog.c
net_namespace.c
offload.c
percpu_freelist.c
percpu_freelist.h
prog_iter.c
queue_stack_maps.c
range_tree.c bpf: Add necessary migrate_disable to range_tree. 2024-11-15 08:11:53 -08:00
range_tree.h bpf: Introduce range_tree data structure and use it in bpf arena 2024-11-13 13:52:45 -08:00
relo_core.c bpf: Remove custom build rule 2024-08-30 08:55:26 -07:00
reuseport_array.c bpf: Use sockfd_put() helper 2024-08-30 08:57:47 -07:00
ringbuf.c bpf: Add MEM_WRITE attribute 2024-10-22 15:42:56 -07:00
stackmap.c bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers 2024-09-11 09:58:31 -07:00
syscall.c tracing updates for v6.13: 2024-11-22 13:27:01 -08:00
sysfs_btf.c btf: Avoid weak external references 2024-04-16 16:35:13 +02:00
task_iter.c vfs-6.13.file 2024-11-18 10:30:29 -08:00
tcx.c
tnum.c
token.c remove pointless includes of <linux/fdtable.h> 2024-10-07 13:34:41 -04:00
trampoline.c bpf: Add kernel symbol for struct_ops trampoline 2024-11-12 17:13:46 -08:00
verifier.c bpf: Fix narrow scalar spill onto 64-bit spilled scalar slots 2024-12-04 09:19:50 -08:00