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| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2022-04-04 18:30:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-04-06 13:45:26 +0100 |
| commit | f4b41f062c424209e3939a81e6da022e049a45f2 (patch) | |
| tree | cd8e8a16fb7cc256ad2a0f4136b169bce3d40e47 /net/netlink | |
| parent | 0b5c21bbc01e92745ca1ca4f6fd87d878fa3ea5e (diff) | |
| download | linux-f4b41f062c424209e3939a81e6da022e049a45f2.tar.gz linux-f4b41f062c424209e3939a81e6da022e049a45f2.tar.bz2 linux-f4b41f062c424209e3939a81e6da022e049a45f2.zip | |
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 <lkp@intel.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/af_netlink.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 47a876ccd288..9fa85bb36c0e 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1931,7 +1931,6 @@ static int netlink_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, struct scm_cookie scm; struct sock *sk = sock->sk; struct netlink_sock *nlk = nlk_sk(sk); - int noblock = flags & MSG_DONTWAIT; size_t copied; struct sk_buff *skb, *data_skb; int err, ret; @@ -1941,7 +1940,7 @@ static int netlink_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, copied = 0; - skb = skb_recv_datagram(sk, flags, noblock, &err); + skb = skb_recv_datagram(sk, flags, &err); if (skb == NULL) goto out; |