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bpf: Add missing map_get_next_key method to bloom filter map. 

Without it, kernel crashes in map_get_next_key().

Fixes: 9330986c03 ("bpf: Add bloom filter map implementation")
Reported-by: TCS Robot <tcs_robot@tencent.com>
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Joanne Koong <joannekoong@fb.com>
Link: https://lore.kernel.org/bpf/1640776802-22421-1-git-send-email-tcs.kernel@gmail.com
This commit is contained in:
Haimin Zhang 2021-12-29 19:20:02 +08:00 committed by Alexei Starovoitov
parent b6459415b3
commit 3ccdcee284
1 changed files with 6 additions and 0 deletions
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6
kernel/bpf/bloom_filter.c
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@ -82,6 +82,11 @@ static int bloom_map_delete_elem(struct bpf_map *map, void *value)
return -EOPNOTSUPP;
}
static int bloom_map_get_next_key(struct bpf_map *map, void *key, void *next_key)
{
return -EOPNOTSUPP;
}
static struct bpf_map *bloom_map_alloc(union bpf_attr *attr)
{
u32 bitset_bytes, bitset_mask, nr_hash_funcs, nr_bits;
@ -192,6 +197,7 @@ const struct bpf_map_ops bloom_filter_map_ops = {
.map_meta_equal = bpf_map_meta_equal,
.map_alloc = bloom_map_alloc,
.map_free = bloom_map_free,
.map_get_next_key = bloom_map_get_next_key,
.map_push_elem = bloom_map_push_elem,
.map_peek_elem = bloom_map_peek_elem,
.map_pop_elem = bloom_map_pop_elem,