[PATCH 005 of 14] knfsd: SUNRPC: Don't set msg_name and msg_namelen when calling sock_recvmsg

From: NeilBrown
Date: Thu Feb 01 2007 - 23:43:08 EST



From: Chuck Lever <chuck.lever@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>

### Diffstat output
./net/sunrpc/svcsock.c | 22 +++++++---------------
1 file changed, 7 insertions(+), 15 deletions(-)

diff .prev/net/sunrpc/svcsock.c ./net/sunrpc/svcsock.c
--- .prev/net/sunrpc/svcsock.c 2007-02-02 15:21:55.000000000 +1100
+++ ./net/sunrpc/svcsock.c 2007-02-02 15:22:22.000000000 +1100
@@ -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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