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af_unix: Include the whole hash table size in UNIX_HASH_SIZE.

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Currently, the size of AF_UNIX hash table is UNIX_HASH_SIZE * 2,
the first half for bind()ed sockets and the second half for unbound
ones.  UNIX_HASH_SIZE * 2 is used to define the table and iterate
over it.

In some places, we use ARRAY_SIZE(unix_socket_table) instead of
UNIX_HASH_SIZE * 2.  However, we cannot use it anymore because we
will allocate the hash table dynamically.  Then, we would have to
add UNIX_HASH_SIZE * 2 in many places, which would be troublesome.

This patch adapts the UNIX_HASH_SIZE definition to include bound
and unbound sockets and defines a new UNIX_HASH_MOD macro to ease
calculations.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kuniyuki Iwashima
2022-06-21 10:19:09 -07:00
committed by David S. Miller
parent 340c3d3371
commit f302d180c6
3 changed files with 15 additions and 16 deletions
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7
include/net/af_unix.h
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@@ -16,12 +16,13 @@ void wait_for_unix_gc(void);
struct sock *unix_get_socket(struct file *filp);
struct sock *unix_peer_get(struct sock *sk);
#define UNIX_HASH_SIZE 256
#define UNIX_HASH_MOD (256 - 1)
#define UNIX_HASH_SIZE (256 * 2)
#define UNIX_HASH_BITS 8
extern unsigned int unix_tot_inflight;
extern spinlock_t unix_table_locks[2 * UNIX_HASH_SIZE];
extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
extern spinlock_t unix_table_locks[UNIX_HASH_SIZE];
extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE];
struct unix_address {
refcount_t refcnt;