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Diffstat (limited to 'kernel/bpf/hashtab.c')
-rw-r--r--kernel/bpf/hashtab.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index ae822de4a90a..d246905f2bb1 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -662,12 +662,27 @@ static void pcpu_copy_value(struct bpf_htab *htab, void __percpu *pptr,
}
}
+static bool fd_htab_map_needs_adjust(const struct bpf_htab *htab)
+{
+ return htab->map.map_type == BPF_MAP_TYPE_HASH_OF_MAPS &&
+ BITS_PER_LONG == 64;
+}
+
+static u32 htab_size_value(const struct bpf_htab *htab, bool percpu)
+{
+ u32 size = htab->map.value_size;
+
+ if (percpu || fd_htab_map_needs_adjust(htab))
+ size = round_up(size, 8);
+ return size;
+}
+
static struct htab_elem *alloc_htab_elem(struct bpf_htab *htab, void *key,
void *value, u32 key_size, u32 hash,
bool percpu, bool onallcpus,
struct htab_elem *old_elem)
{
- u32 size = htab->map.value_size;
+ u32 size = htab_size_value(htab, percpu);
bool prealloc = htab_is_prealloc(htab);
struct htab_elem *l_new, **pl_new;
void __percpu *pptr;
@@ -707,9 +722,6 @@ static struct htab_elem *alloc_htab_elem(struct bpf_htab *htab, void *key,
memcpy(l_new->key, key, key_size);
if (percpu) {
- /* round up value_size to 8 bytes */
- size = round_up(size, 8);
-
if (prealloc) {
pptr = htab_elem_get_ptr(l_new, key_size);
} else {
@@ -1220,17 +1232,9 @@ const struct bpf_map_ops htab_lru_percpu_map_ops = {
static struct bpf_map *fd_htab_map_alloc(union bpf_attr *attr)
{
- struct bpf_map *map;
-
if (attr->value_size != sizeof(u32))
return ERR_PTR(-EINVAL);
-
- /* pointer is stored internally */
- attr->value_size = sizeof(void *);
- map = htab_map_alloc(attr);
- attr->value_size = sizeof(u32);
-
- return map;
+ return htab_map_alloc(attr);
}
static void fd_htab_map_free(struct bpf_map *map)