From: Hou Tao <houtao1@xxxxxxxxxx>
Hi,
This patch set fixes several issues for LPM trie. These issues were
found during adding new test cases or were reported by syzbot.
The patch set is structured as follows:
Patch #1~#2 are clean-ups for lpm_trie_update_elem().
Patch #3 handles BPF_EXIST and BPF_NOEXIST correctly for LPM trie.
Patch #4 fixes the accounting of n_entries when doing in-place update.
Patch #5 fixes the exact match condition in trie_get_next_key() and it
may skip keys when the passed key is not found in the map.
Patch #6~7 switch from kmalloc() to bpf memory allocator for LPM trie to
fix several lock order warnings reported by syzbot.
Patch #8 enables raw_spinlock_t for LPM trie again after switching to
bpf memory allocator.
Patch #9: move test_lpm_map to map_tests to make it run regularly.
Patch #10: add more basic test cases for LPM trie.
Please see individual patches for more details. Comments are always
welcome.
Hou Tao (10):
bpf: Remove unnecessary check when updating LPM trie
bpf: Remove unnecessary kfree(im_node) in lpm_trie_update_elem
bpf: Handle BPF_EXIST and BPF_NOEXIST for LPM trie
bpf: Handle in-place update for full LPM trie correctly
bpf: Fix exact match conditions in trie_get_next_key()
bpf: Add bpf_mem_cache_is_mergeable() helper
bpf: Switch to bpf mem allocator for LPM trie
bpf: Use raw_spinlock_t for LPM trie
selftests/bpf: Move test_lpm_map.c to map_tests
selftests/bpf: Add more test cases for LPM trie
include/linux/bpf_mem_alloc.h | 1 +
kernel/bpf/lpm_trie.c | 158 +++++--
kernel/bpf/memalloc.c | 12 +
tools/testing/selftests/bpf/.gitignore | 1 -
tools/testing/selftests/bpf/Makefile | 2 +-
.../lpm_trie_map_basic_ops.c} | 401 +++++++++++++++++-
6 files changed, 523 insertions(+), 52 deletions(-)
rename tools/testing/selftests/bpf/{test_lpm_map.c => map_tests/lpm_trie_map_basic_ops.c} (64%)
--
2.29.2
