From: Cong Wang <cong.wang@xxxxxxxxxxxxx>
This patchset introduces a new eBPF hash map whose elements have
timeouts. Patch 1 is the implementation of timeout map, patch 2 adds
some test cases for timeout map in test_maps, and patch 3 adds a test
case in map ptr test. This patchset has been tested with the provided
test cases for hours.
Please check each patch description for more details.
---
v5: add a lost piece of patch during rebase
fix the extra_elems corner case
add a stress test case
v4: merge gc_work into gc_idle_work to avoid a nasty race condition
fix a potential use-after-free
add one more test case
improve comments and update changelog
v3: move gc list from bucket to elem
reuse lru_node in struct htab_elem
drop patches which are no longer necessary
fix delete path
add a test case for delete path
add parallel test cases
change timeout to ms
drop batch ops
v2: fix hashmap ptr test
add a test case in map ptr test
factor out htab_timeout_map_alloc()
Cong Wang (3):
bpf: introduce timeout hash map
selftests/bpf: add test cases for bpf timeout map
selftests/bpf: add timeout map check in map_ptr tests
include/linux/bpf_types.h | 1 +
include/uapi/linux/bpf.h | 5 +-
kernel/bpf/hashtab.c | 274 +++++++++++++++++-
kernel/bpf/syscall.c | 3 +-
tools/include/uapi/linux/bpf.h | 1 +
.../selftests/bpf/progs/map_ptr_kern.c | 20 ++
tools/testing/selftests/bpf/test_maps.c | 68 +++++
7 files changed, 357 insertions(+), 15 deletions(-)
--
2.25.1
