diff options
| author | Frank van Maarseveen <frankvm@frankvm.com> | 2007-07-09 22:23:35 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-10 23:40:49 -0400 |
| commit | d3bc9a1deb8964d774af8535814cb91bf8f6def0 (patch) | |
| tree | c8ae19f3684b40a4c53d948adc3b0f688d373497 /net/sunrpc | |
| parent | a97476926ec061f90b77da478620ea6dc71a3237 (diff) | |
SUNRPC client: add interface for binding to a local address
In addition to binding to a local privileged port the NFS client should
allow binding to a specific local address. This is used by the server
for callbacks. The patch adds the necessary interface.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/clnt.c | 1 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 24 |
2 files changed, 17 insertions, 8 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 25bbf2d7f603..5d3fe7b22488 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -236,6 +236,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) struct rpc_clnt *clnt; struct rpc_xprtsock_create xprtargs = { .proto = args->protocol, + .srcaddr = args->saddress, .dstaddr = args->address, .addrlen = args->addrsize, .timeout = args->timeout diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 6b7cea57651c..4ae7eed7f617 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -235,6 +235,7 @@ struct sock_xprt { * Connection of transports */ struct delayed_work connect_worker; + struct sockaddr_storage addr; unsigned short port; /* @@ -1145,31 +1146,36 @@ static void xs_set_port(struct rpc_xprt *xprt, unsigned short port) sap->sin_port = htons(port); } -static int xs_bindresvport(struct sock_xprt *transport, struct socket *sock) +static int xs_bind(struct sock_xprt *transport, struct socket *sock) { struct sockaddr_in myaddr = { .sin_family = AF_INET, }; + struct sockaddr_in *sa; int err; unsigned short port = transport->port; + if (!transport->xprt.resvport) + port = 0; + sa = (struct sockaddr_in *)&transport->addr; + myaddr.sin_addr = sa->sin_addr; do { myaddr.sin_port = htons(port); err = kernel_bind(sock, (struct sockaddr *) &myaddr, sizeof(myaddr)); + if (!transport->xprt.resvport) + break; if (err == 0) { transport->port = port; - dprintk("RPC: xs_bindresvport bound to port %u\n", - port); - return 0; + break; } if (port <= xprt_min_resvport) port = xprt_max_resvport; else port--; } while (err == -EADDRINUSE && port != transport->port); - - dprintk("RPC: can't bind to reserved port (%d).\n", -err); + dprintk("RPC: xs_bind "NIPQUAD_FMT":%u: %s (%d)\n", + NIPQUAD(myaddr.sin_addr), port, err ? "failed" : "ok", err); return err; } @@ -1228,7 +1234,7 @@ static void xs_udp_connect_worker(struct work_struct *work) } xs_reclassify_socket(sock); - if (xprt->resvport && xs_bindresvport(transport, sock) < 0) { + if (xs_bind(transport, sock)) { sock_release(sock); goto out; } @@ -1315,7 +1321,7 @@ static void xs_tcp_connect_worker(struct work_struct *work) } xs_reclassify_socket(sock); - if (xprt->resvport && xs_bindresvport(transport, sock) < 0) { + if (xs_bind(transport, sock)) { sock_release(sock); goto out; } @@ -1531,6 +1537,8 @@ static struct rpc_xprt *xs_setup_xprt(struct rpc_xprtsock_create *args, unsigned memcpy(&xprt->addr, args->dstaddr, args->addrlen); xprt->addrlen = args->addrlen; + if (args->srcaddr) + memcpy(&new->addr, args->srcaddr, args->addrlen); new->port = xs_get_random_port(); return xprt; |