diff options
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 64 |
1 files changed, 33 insertions, 31 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index 6444525f610c..f333d75ef1a9 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -226,7 +226,8 @@ static struct lock_class_key af_family_kern_slock_keys[AF_MAX]; x "AF_RXRPC" , x "AF_ISDN" , x "AF_PHONET" , \ x "AF_IEEE802154", x "AF_CAIF" , x "AF_ALG" , \ x "AF_NFC" , x "AF_VSOCK" , x "AF_KCM" , \ - x "AF_QIPCRTR", x "AF_SMC" , x "AF_MAX" + x "AF_QIPCRTR", x "AF_SMC" , x "AF_XDP" , \ + x "AF_MAX" static const char *const af_family_key_strings[AF_MAX+1] = { _sock_locks("sk_lock-") @@ -262,7 +263,8 @@ static const char *const af_family_rlock_key_strings[AF_MAX+1] = { "rlock-AF_RXRPC" , "rlock-AF_ISDN" , "rlock-AF_PHONET" , "rlock-AF_IEEE802154", "rlock-AF_CAIF" , "rlock-AF_ALG" , "rlock-AF_NFC" , "rlock-AF_VSOCK" , "rlock-AF_KCM" , - "rlock-AF_QIPCRTR", "rlock-AF_SMC" , "rlock-AF_MAX" + "rlock-AF_QIPCRTR", "rlock-AF_SMC" , "rlock-AF_XDP" , + "rlock-AF_MAX" }; static const char *const af_family_wlock_key_strings[AF_MAX+1] = { "wlock-AF_UNSPEC", "wlock-AF_UNIX" , "wlock-AF_INET" , @@ -279,7 +281,8 @@ static const char *const af_family_wlock_key_strings[AF_MAX+1] = { "wlock-AF_RXRPC" , "wlock-AF_ISDN" , "wlock-AF_PHONET" , "wlock-AF_IEEE802154", "wlock-AF_CAIF" , "wlock-AF_ALG" , "wlock-AF_NFC" , "wlock-AF_VSOCK" , "wlock-AF_KCM" , - "wlock-AF_QIPCRTR", "wlock-AF_SMC" , "wlock-AF_MAX" + "wlock-AF_QIPCRTR", "wlock-AF_SMC" , "wlock-AF_XDP" , + "wlock-AF_MAX" }; static const char *const af_family_elock_key_strings[AF_MAX+1] = { "elock-AF_UNSPEC", "elock-AF_UNIX" , "elock-AF_INET" , @@ -296,7 +299,8 @@ static const char *const af_family_elock_key_strings[AF_MAX+1] = { "elock-AF_RXRPC" , "elock-AF_ISDN" , "elock-AF_PHONET" , "elock-AF_IEEE802154", "elock-AF_CAIF" , "elock-AF_ALG" , "elock-AF_NFC" , "elock-AF_VSOCK" , "elock-AF_KCM" , - "elock-AF_QIPCRTR", "elock-AF_SMC" , "elock-AF_MAX" + "elock-AF_QIPCRTR", "elock-AF_SMC" , "elock-AF_XDP" , + "elock-AF_MAX" }; /* @@ -323,8 +327,8 @@ EXPORT_SYMBOL(sysctl_optmem_max); int sysctl_tstamp_allow_data __read_mostly = 1; -struct static_key memalloc_socks = STATIC_KEY_INIT_FALSE; -EXPORT_SYMBOL_GPL(memalloc_socks); +DEFINE_STATIC_KEY_FALSE(memalloc_socks_key); +EXPORT_SYMBOL_GPL(memalloc_socks_key); /** * sk_set_memalloc - sets %SOCK_MEMALLOC @@ -338,7 +342,7 @@ void sk_set_memalloc(struct sock *sk) { sock_set_flag(sk, SOCK_MEMALLOC); sk->sk_allocation |= __GFP_MEMALLOC; - static_key_slow_inc(&memalloc_socks); + static_branch_inc(&memalloc_socks_key); } EXPORT_SYMBOL_GPL(sk_set_memalloc); @@ -346,7 +350,7 @@ void sk_clear_memalloc(struct sock *sk) { sock_reset_flag(sk, SOCK_MEMALLOC); sk->sk_allocation &= ~__GFP_MEMALLOC; - static_key_slow_dec(&memalloc_socks); + static_branch_dec(&memalloc_socks_key); /* * SOCK_MEMALLOC is allowed to ignore rmem limits to ensure forward @@ -724,9 +728,22 @@ int sock_setsockopt(struct socket *sock, int level, int optname, sock_valbool_flag(sk, SOCK_DBG, valbool); break; case SO_REUSEADDR: - sk->sk_reuse = (valbool ? SK_CAN_REUSE : SK_NO_REUSE); + val = (valbool ? SK_CAN_REUSE : SK_NO_REUSE); + if ((sk->sk_family == PF_INET || sk->sk_family == PF_INET6) && + inet_sk(sk)->inet_num && + (sk->sk_reuse != val)) { + ret = (sk->sk_state == TCP_ESTABLISHED) ? -EISCONN : -EUCLEAN; + break; + } + sk->sk_reuse = val; break; case SO_REUSEPORT: + if ((sk->sk_family == PF_INET || sk->sk_family == PF_INET6) && + inet_sk(sk)->inet_num && + (sk->sk_reuseport != valbool)) { + ret = (sk->sk_state == TCP_ESTABLISHED) ? -EISCONN : -EUCLEAN; + break; + } sk->sk_reuseport = valbool; break; case SO_TYPE: @@ -905,7 +922,10 @@ set_rcvbuf: case SO_RCVLOWAT: if (val < 0) val = INT_MAX; - sk->sk_rcvlowat = val ? : 1; + if (sock->ops->set_rcvlowat) + ret = sock->ops->set_rcvlowat(sk, val); + else + sk->sk_rcvlowat = val ? : 1; break; case SO_RCVTIMEO: @@ -1606,7 +1626,7 @@ static void __sk_free(struct sock *sk) if (likely(sk->sk_net_refcnt)) sock_inuse_add(sock_net(sk), -1); - if (unlikely(sock_diag_has_destroy_listeners(sk) && sk->sk_net_refcnt)) + if (unlikely(sk->sk_net_refcnt && sock_diag_has_destroy_listeners(sk))) sock_diag_broadcast_destroy(sk); else sk_destruct(sk); @@ -2567,12 +2587,6 @@ int sock_no_getname(struct socket *sock, struct sockaddr *saddr, } EXPORT_SYMBOL(sock_no_getname); -__poll_t sock_no_poll(struct file *file, struct socket *sock, poll_table *pt) -{ - return 0; -} -EXPORT_SYMBOL(sock_no_poll); - int sock_no_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { return -EOPNOTSUPP; @@ -3439,22 +3453,10 @@ static const struct seq_operations proto_seq_ops = { .show = proto_seq_show, }; -static int proto_seq_open(struct inode *inode, struct file *file) -{ - return seq_open_net(inode, file, &proto_seq_ops, - sizeof(struct seq_net_private)); -} - -static const struct file_operations proto_seq_fops = { - .open = proto_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_net, -}; - static __net_init int proto_init_net(struct net *net) { - if (!proc_create("protocols", 0444, net->proc_net, &proto_seq_fops)) + if (!proc_create_net("protocols", 0444, net->proc_net, &proto_seq_ops, + sizeof(struct seq_net_private))) return -ENOMEM; return 0; |
