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| author |   Takshak Chahande <ctakshak@fb.com> | 2022-05-10 01:22:20 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2022-05-10 10:34:57 -0700 |
| commit | 9263dddc7b6f816fdd327eee435cc54ba51dd095 (patch) | |
| tree | 14509baef62b14a30ed234e8fd0cd2fcd0af60b8 /kernel/bpf/arraymap.c | |
| parent | bpf: Print some info if disable bpf_jit_enable failed (diff) | |
| download | linux-dev-9263dddc7b6f816fdd327eee435cc54ba51dd095.tar.xz linux-dev-9263dddc7b6f816fdd327eee435cc54ba51dd095.zip | |
bpf: Extend batch operations for map-in-map bpf-maps
This patch extends batch operations support for map-in-map map-types:
BPF_MAP_TYPE_HASH_OF_MAPS and BPF_MAP_TYPE_ARRAY_OF_MAPS
A usecase where outer HASH map holds hundred of VIP entries and its
associated reuse-ports per VIP stored in REUSEPORT_SOCKARRAY type
inner map, needs to do batch operation for performance gain.
This patch leverages the exiting generic functions for most of the batch
operations. As map-in-map's value contains the actual reference of the inner map,
for BPF_MAP_TYPE_HASH_OF_MAPS type, it needed an extra step to fetch the
map_id from the reference value.
selftests are added in next patch 2/2.
Signed-off-by: Takshak Chahande <ctakshak@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220510082221.2390540-1-ctakshak@fb.com
Diffstat (limited to 'kernel/bpf/arraymap.c')
| -rw-r--r-- | kernel/bpf/arraymap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index b3bf31fd9458..724613da6576 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -1345,6 +1345,8 @@ const struct bpf_map_ops array_of_maps_map_ops = { .map_fd_put_ptr = bpf_map_fd_put_ptr, .map_fd_sys_lookup_elem = bpf_map_fd_sys_lookup_elem, .map_gen_lookup = array_of_map_gen_lookup, + .map_lookup_batch = generic_map_lookup_batch, + .map_update_batch = generic_map_update_batch, .map_check_btf = map_check_no_btf, .map_btf_id = &array_map_btf_ids[0], }; |