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SUNRPC: Finish API to load RPC transport implementations dynamically

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Allow RPC client transport implementations to be loaded as needed, or
as they become available from distributors or third-party vendors.

Note that we leave the IP sockets implementation in sunrpc.o
permanently, as IP functionality is always available in any
kernel that runs NFS.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Tom Talpey <tmt@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
\"Talpey, Thomas\
2007-09-10 13:46:39 -04:00
committed by Trond Myklebust
parent 81c098af3d
commit bc25571e21
2 changed files with 57 additions and 16 deletions
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26
net/sunrpc/xprt.c
View File

@@ -983,19 +983,23 @@ struct rpc_xprt *xprt_create_transport(struct rpc_xprtsock_create *args)
{
struct rpc_xprt *xprt;
struct rpc_rqst *req;
struct xprt_class *t;
switch (args->proto) {
case IPPROTO_UDP:
xprt = xs_setup_udp(args);
break;
case IPPROTO_TCP:
xprt = xs_setup_tcp(args);
break;
default:
printk(KERN_ERR "RPC: unrecognized transport protocol: %d\n",
args->proto);
return ERR_PTR(-EIO);
spin_lock(&xprt_list_lock);
list_for_each_entry(t, &xprt_list, list) {
if ((t->family == args->dstaddr->sa_family) &&
(t->protocol == args->proto)) {
spin_unlock(&xprt_list_lock);
goto found;
}
}
spin_unlock(&xprt_list_lock);
printk(KERN_ERR "RPC: transport (%u/%d) not supported\n",
args->dstaddr->sa_family, args->proto);
return ERR_PTR(-EIO);
found:
xprt = t->setup(args);
if (IS_ERR(xprt)) {
dprintk("RPC: xprt_create_transport: failed, %ld\n",
-PTR_ERR(xprt));