SUNRPC server: record the destination address of a request
Save the destination address of an incoming request over TCP like is
done already for UDP. It is necessary later for callbacks by the server.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 5baf48d..64b9b8c 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -644,6 +644,7 @@
struct msghdr msg = {
.msg_flags = MSG_DONTWAIT,
};
+ struct sockaddr *sin;
int len;
len = kernel_recvmsg(svsk->sk_sock, &msg, iov, nr, buflen,
@@ -654,6 +655,19 @@
memcpy(&rqstp->rq_addr, &svsk->sk_remote, svsk->sk_remotelen);
rqstp->rq_addrlen = svsk->sk_remotelen;
+ /* Destination address in request is needed for binding the
+ * source address in RPC callbacks later.
+ */
+ sin = (struct sockaddr *)&svsk->sk_local;
+ switch (sin->sa_family) {
+ case AF_INET:
+ rqstp->rq_daddr.addr = ((struct sockaddr_in *)sin)->sin_addr;
+ break;
+ case AF_INET6:
+ rqstp->rq_daddr.addr6 = ((struct sockaddr_in6 *)sin)->sin6_addr;
+ break;
+ }
+
dprintk("svc: socket %p recvfrom(%p, %Zu) = %d\n",
svsk, iov[0].iov_base, iov[0].iov_len, len);
@@ -1064,6 +1078,12 @@
goto failed;
memcpy(&newsvsk->sk_remote, sin, slen);
newsvsk->sk_remotelen = slen;
+ err = kernel_getsockname(newsock, sin, &slen);
+ if (unlikely(err < 0)) {
+ dprintk("svc_tcp_accept: kernel_getsockname error %d\n", -err);
+ slen = offsetof(struct sockaddr, sa_data);
+ }
+ memcpy(&newsvsk->sk_local, sin, slen);
svc_sock_received(newsvsk);