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authorFrank van Maarseveen <frankvm@frankvm.com>2007-07-09 22:21:39 +0200
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-07-10 23:40:49 -0400
commita97476926ec061f90b77da478620ea6dc71a3237 (patch)
tree0b6ad42f5cca4484ce702cf3fcb016b52ec17cef
parent96802a095171f5b35cf0e1e0d4be943e6696a253 (diff)
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>
-rw-r--r--include/linux/sunrpc/svcsock.h1
-rw-r--r--net/sunrpc/svcsock.c20
2 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h
index e21dd93ac4b..a53e0fa855d 100644
--- a/include/linux/sunrpc/svcsock.h
+++ b/include/linux/sunrpc/svcsock.h
@@ -59,6 +59,7 @@ struct svc_sock {
/* cache of various info for TCP sockets */
void *sk_info_authunix;
+ struct sockaddr_storage sk_local; /* local address */
struct sockaddr_storage sk_remote; /* remote peer's address */
int sk_remotelen; /* length of address */
};
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 5baf48de255..64b9b8c743c 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -644,6 +644,7 @@ svc_recvfrom(struct svc_rqst *rqstp, struct kvec *iov, int nr, int buflen)
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 @@ svc_recvfrom(struct svc_rqst *rqstp, struct kvec *iov, int nr, int buflen)
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 @@ svc_tcp_accept(struct svc_sock *svsk)
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);