diff options
Diffstat (limited to 'kernel/bpf/reuseport_array.c')
| -rw-r--r-- | kernel/bpf/reuseport_array.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/kernel/bpf/reuseport_array.c b/kernel/bpf/reuseport_array.c index 556a769b5b80..82c61612f382 100644 --- a/kernel/bpf/reuseport_array.c +++ b/kernel/bpf/reuseport_array.c @@ -6,6 +6,7 @@ #include <linux/err.h> #include <linux/sock_diag.h> #include <net/sock_reuseport.h> +#include <linux/btf_ids.h> struct reuseport_array { struct bpf_map map; @@ -20,14 +21,11 @@ static struct reuseport_array *reuseport_array(struct bpf_map *map) /* The caller must hold the reuseport_lock */ void bpf_sk_reuseport_detach(struct sock *sk) { - uintptr_t sk_user_data; + struct sock __rcu **socks; write_lock_bh(&sk->sk_callback_lock); - sk_user_data = (uintptr_t)sk->sk_user_data; - if (sk_user_data & SK_USER_DATA_BPF) { - struct sock __rcu **socks; - - socks = (void *)(sk_user_data & SK_USER_DATA_PTRMASK); + socks = __locked_read_sk_user_data_with_flags(sk, SK_USER_DATA_BPF); + if (socks) { WRITE_ONCE(sk->sk_user_data, NULL); /* * Do not move this NULL assignment outside of @@ -143,7 +141,7 @@ static void reuseport_array_free(struct bpf_map *map) /* * Once reaching here, all sk->sk_user_data is not - * referenceing this "array". "array" can be freed now. + * referencing this "array". "array" can be freed now. */ bpf_map_area_free(array); } @@ -337,7 +335,7 @@ static int reuseport_array_get_next_key(struct bpf_map *map, void *key, return 0; } -static int reuseport_array_map_btf_id; +BTF_ID_LIST_SINGLE(reuseport_array_map_btf_ids, struct, reuseport_array) const struct bpf_map_ops reuseport_array_ops = { .map_meta_equal = bpf_map_meta_equal, .map_alloc_check = reuseport_array_alloc_check, @@ -346,6 +344,5 @@ const struct bpf_map_ops reuseport_array_ops = { .map_lookup_elem = reuseport_array_lookup_elem, .map_get_next_key = reuseport_array_get_next_key, .map_delete_elem = reuseport_array_delete_elem, - .map_btf_name = "reuseport_array", - .map_btf_id = &reuseport_array_map_btf_id, + .map_btf_id = &reuseport_array_map_btf_ids[0], }; |