From f4b41f062c424209e3939a81e6da022e049a45f2 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Mon, 4 Apr 2022 18:30:22 +0200 Subject: net: remove noblock parameter from skb_recv_datagram() skb_recv_datagram() has two parameters 'flags' and 'noblock' that are merged inside skb_recv_datagram() by 'flags | (noblock ? MSG_DONTWAIT : 0)' As 'flags' may contain MSG_DONTWAIT as value most callers split the 'flags' into 'flags' and 'noblock' with finally obsolete bit operations like this: skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &rc); And this is not even done consistently with the 'flags' parameter. This patch removes the obsolete and costly splitting into two parameters and only performs bit operations when really needed on the caller side. One missing conversion thankfully reported by kernel test robot. I missed to enable kunit tests to build the mctp code. Reported-by: kernel test robot Signed-off-by: Oliver Hartkopp Signed-off-by: David S. Miller --- net/bluetooth/af_bluetooth.c | 3 +-- net/bluetooth/hci_sock.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) (limited to 'net/bluetooth') diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index a0cb2e3da8d4..62705734343b 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -251,7 +251,6 @@ EXPORT_SYMBOL(bt_accept_dequeue); int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) { - int noblock = flags & MSG_DONTWAIT; struct sock *sk = sock->sk; struct sk_buff *skb; size_t copied; @@ -263,7 +262,7 @@ int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, if (flags & MSG_OOB) return -EOPNOTSUPP; - skb = skb_recv_datagram(sk, flags, noblock, &err); + skb = skb_recv_datagram(sk, flags, &err); if (!skb) { if (sk->sk_shutdown & RCV_SHUTDOWN) return 0; diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 33b3c0ffc339..189e3115c8c6 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1453,7 +1453,6 @@ static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) { - int noblock = flags & MSG_DONTWAIT; struct sock *sk = sock->sk; struct sk_buff *skb; int copied, err; @@ -1470,7 +1469,7 @@ static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, if (sk->sk_state == BT_CLOSED) return 0; - skb = skb_recv_datagram(sk, flags, noblock, &err); + skb = skb_recv_datagram(sk, flags, &err); if (!skb) return err; -- cgit v1.2.3