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author\"Talpey, Thomas\ <Thomas.Talpey@netapp.com>2007-09-10 13:46:39 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-10-09 17:17:42 -0400
commitbc25571e21e8bd053554209f5b1b228ad71e6b99 (patch)
tree4c008cc445f24c6b5501b2867b8ba7a752b5d710 /net/sunrpc/xprt.c
parent81c098af3da7981902e9f8163aeccc2467c4ba6d (diff)
SUNRPC: Finish API to load RPC transport implementations dynamically
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>
Diffstat (limited to 'net/sunrpc/xprt.c')
-rw-r--r--net/sunrpc/xprt.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 520859622af..7f8c60b8439 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -983,19 +983,23 @@ struct rpc_xprt *xprt_create_transport(struct rpc_xprtsock_create *args)
983{ 983{
984 struct rpc_xprt *xprt; 984 struct rpc_xprt *xprt;
985 struct rpc_rqst *req; 985 struct rpc_rqst *req;
986 struct xprt_class *t;
986 987
987 switch (args->proto) { 988 spin_lock(&xprt_list_lock);
988 case IPPROTO_UDP: 989 list_for_each_entry(t, &xprt_list, list) {
989 xprt = xs_setup_udp(args); 990 if ((t->family == args->dstaddr->sa_family) &&
990 break; 991 (t->protocol == args->proto)) {
991 case IPPROTO_TCP: 992 spin_unlock(&xprt_list_lock);
992 xprt = xs_setup_tcp(args); 993 goto found;
993 break; 994 }
994 default:
995 printk(KERN_ERR "RPC: unrecognized transport protocol: %d\n",
996 args->proto);
997 return ERR_PTR(-EIO);
998 } 995 }
996 spin_unlock(&xprt_list_lock);
997 printk(KERN_ERR "RPC: transport (%u/%d) not supported\n",
998 args->dstaddr->sa_family, args->proto);
999 return ERR_PTR(-EIO);
1000
1001found:
1002 xprt = t->setup(args);
999 if (IS_ERR(xprt)) { 1003 if (IS_ERR(xprt)) {
1000 dprintk("RPC: xprt_create_transport: failed, %ld\n", 1004 dprintk("RPC: xprt_create_transport: failed, %ld\n",
1001 -PTR_ERR(xprt)); 1005 -PTR_ERR(xprt));