[PATCH 04/13] SUNRPC: Don't set msg_name and msg_namelen when calling sock_recvmsg

[Chuck Lever <chuck.lever@oracle.com>]

Clean-up: msg_name and msg_namelen are not used by sock_recvmsg, so
don't bother to set them in svc_recvfrom.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---

 net/sunrpc/svcsock.c |   22 +++++++---------------
 1 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 747fc5b..4bebb4d 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -561,21 +561,13 @@ static int
 svc_recvfrom(struct svc_rqst *rqstp, struct kvec *iov, int nr, int buflen)
 {
 	struct svc_sock *svsk = rqstp->rq_sock;
-	struct msghdr	msg;
-	struct socket	*sock;
-	int		len;
-
-	rqstp->rq_addrlen = sizeof(rqstp->rq_addr);
-	sock = svsk->sk_sock;
-
-	msg.msg_name    = &rqstp->rq_addr;
-	msg.msg_namelen = sizeof(rqstp->rq_addr);
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-
-	msg.msg_flags	= MSG_DONTWAIT;
+	struct msghdr msg = {
+		.msg_flags	= MSG_DONTWAIT,
+	};
+	int len;
 
-	len = kernel_recvmsg(sock, &msg, iov, nr, buflen, MSG_DONTWAIT);
+	len = kernel_recvmsg(svsk->sk_sock, &msg, iov, nr, buflen,
+				msg.msg_flags);
 
 	/* sock_recvmsg doesn't fill in the name/namelen, so we must..
 	 */
@@ -583,7 +575,7 @@ svc_recvfrom(struct svc_rqst *rqstp, str
 	rqstp->rq_addrlen = svsk->sk_remotelen;
 
 	dprintk("svc: socket %p recvfrom(%p, %Zu) = %d\n",
-		rqstp->rq_sock, iov[0].iov_base, iov[0].iov_len, len);
+		svsk, iov[0].iov_base, iov[0].iov_len, len);
 
 	return len;
 }

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