1 files changed, 124 insertions, 4 deletions

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 336a76165454..2b94e2077203 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -34,6 +34,9 @@
 #include <net/bluetooth/bluetooth.h>
 #include <linux/proc_fs.h>
 
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+
 #include "leds.h"
 #include "selftest.h"
 
@@ -185,6 +188,28 @@ void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
 }
 EXPORT_SYMBOL(bt_sock_unlink);
 
+bool bt_sock_linked(struct bt_sock_list *l, struct sock *s)
+{
+	struct sock *sk;
+
+	if (!l || !s)
+		return false;
+
+	read_lock(&l->lock);
+
+	sk_for_each(sk, &l->head) {
+		if (s == sk) {
+			read_unlock(&l->lock);
+			return true;
+		}
+	}
+
+	read_unlock(&l->lock);
+
+	return false;
+}
+EXPORT_SYMBOL(bt_sock_linked);
+
 void bt_accept_enqueue(struct sock *parent, struct sock *sk, bool bh)
 {
 	const struct cred *old_cred;
@@ -312,7 +337,7 @@ int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 	skb = skb_recv_datagram(sk, flags, &err);
 	if (!skb) {
 		if (sk->sk_shutdown & RCV_SHUTDOWN)
-			return 0;
+			err = 0;
 
 		return err;
 	}
@@ -339,6 +364,13 @@ int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 			put_cmsg(msg, SOL_BLUETOOTH, BT_SCM_PKT_STATUS,
 				 sizeof(pkt_status), &pkt_status);
 		}
+
+		if (test_bit(BT_SK_PKT_SEQNUM, &bt_sk(sk)->flags)) {
+			u16 pkt_seqnum = hci_skb_pkt_seqnum(skb);
+
+			put_cmsg(msg, SOL_BLUETOOTH, BT_SCM_PKT_SEQNUM,
+				 sizeof(pkt_seqnum), &pkt_seqnum);
+		}
 	}
 
 	skb_free_datagram(sk, skb);
@@ -541,6 +573,86 @@ __poll_t bt_sock_poll(struct file *file, struct socket *sock,
 }
 EXPORT_SYMBOL(bt_sock_poll);
 
+static int bt_ethtool_get_ts_info(struct sock *sk, unsigned int index,
+				  void __user *useraddr)
+{
+	struct ethtool_ts_info info;
+	struct kernel_ethtool_ts_info ts_info = {};
+	int ret;
+
+	ret = hci_ethtool_ts_info(index, sk->sk_protocol, &ts_info);
+	if (ret == -ENODEV)
+		return ret;
+	else if (ret < 0)
+		return -EIO;
+
+	memset(&info, 0, sizeof(info));
+
+	info.cmd = ETHTOOL_GET_TS_INFO;
+	info.so_timestamping = ts_info.so_timestamping;
+	info.phc_index = ts_info.phc_index;
+	info.tx_types = ts_info.tx_types;
+	info.rx_filters = ts_info.rx_filters;
+
+	if (copy_to_user(useraddr, &info, sizeof(info)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int bt_ethtool(struct sock *sk, const struct ifreq *ifr,
+		      void __user *useraddr)
+{
+	unsigned int index;
+	u32 ethcmd;
+	int n;
+
+	if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
+		return -EFAULT;
+
+	if (sscanf(ifr->ifr_name, "hci%u%n", &index, &n) != 1 ||
+	    n != strlen(ifr->ifr_name))
+		return -ENODEV;
+
+	switch (ethcmd) {
+	case ETHTOOL_GET_TS_INFO:
+		return bt_ethtool_get_ts_info(sk, index, useraddr);
+	}
+
+	return -EOPNOTSUPP;
+}
+
+static int bt_dev_ioctl(struct socket *sock, unsigned int cmd, void __user *arg)
+{
+	struct sock *sk = sock->sk;
+	struct ifreq ifr = {};
+	void __user *data;
+	char *colon;
+	int ret = -ENOIOCTLCMD;
+
+	if (get_user_ifreq(&ifr, &data, arg))
+		return -EFAULT;
+
+	ifr.ifr_name[IFNAMSIZ - 1] = 0;
+	colon = strchr(ifr.ifr_name, ':');
+	if (colon)
+		*colon = 0;
+
+	switch (cmd) {
+	case SIOCETHTOOL:
+		ret = bt_ethtool(sk, &ifr, data);
+		break;
+	}
+
+	if (colon)
+		*colon = ':';
+
+	if (put_user_ifreq(&ifr, arg))
+		return -EFAULT;
+
+	return ret;
+}
+
 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
 	struct sock *sk = sock->sk;
@@ -565,13 +677,18 @@ int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 		if (sk->sk_state == BT_LISTEN)
 			return -EINVAL;
 
-		lock_sock(sk);
+		spin_lock(&sk->sk_receive_queue.lock);
 		skb = skb_peek(&sk->sk_receive_queue);
 		amount = skb ? skb->len : 0;
-		release_sock(sk);
+		spin_unlock(&sk->sk_receive_queue.lock);
+
 		err = put_user(amount, (int __user *)arg);
 		break;
 
+	case SIOCETHTOOL:
+		err = bt_dev_ioctl(sock, cmd, (void __user *)arg);
+		break;
+
 	default:
 		err = -ENOIOCTLCMD;
 		break;
@@ -705,7 +822,7 @@ static int bt_seq_show(struct seq_file *seq, void *v)
 			   refcount_read(&sk->sk_refcnt),
 			   sk_rmem_alloc_get(sk),
 			   sk_wmem_alloc_get(sk),
-			   from_kuid(seq_user_ns(seq), sock_i_uid(sk)),
+			   from_kuid(seq_user_ns(seq), sk_uid(sk)),
 			   sock_i_ino(sk),
 			   bt->parent ? sock_i_ino(bt->parent) : 0LU);
 
@@ -824,11 +941,14 @@ cleanup_sysfs:
 	bt_sysfs_cleanup();
 cleanup_led:
 	bt_leds_cleanup();
+	debugfs_remove_recursive(bt_debugfs);
 	return err;
 }
 
 static void __exit bt_exit(void)
 {
+	iso_exit();
+
 	mgmt_exit();
 
 	sco_exit();