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authorBenny Halevy <bhalevy@panasas.com>2009-04-01 13:23:09 (GMT)
committerBenny Halevy <bhalevy@panasas.com>2009-06-17 21:11:30 (GMT)
commit7652e5a09ba319241607b22d9055ce93fd5b8039 (patch)
tree9d1d491af237dffb1593ed8f2351ebda36b32972 /net
parenta43cde94feded0f65fce36330614691c650ae8fe (diff)
downloadlinux-7652e5a09ba319241607b22d9055ce93fd5b8039.tar.xz
nfs41: sunrpc: provide functions to create and destroy a svc_xprt for backchannel use
For nfs41 callbacks we need an svc_xprt to process requests coming up the backchannel socket as rpc_rqst's that are transformed into svc_rqst's that need a rq_xprt to be processed. The svc_{udp,tcp}_create methods are too heavy for this job as svc_create_socket creates an actual socket to listen on while for nfs41 we're "reusing" the fore channel's socket. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/svcsock.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 9d50423..a2a03e5 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1327,3 +1327,42 @@ static void svc_sock_free(struct svc_xprt *xprt)
sock_release(svsk->sk_sock);
kfree(svsk);
}
+
+/*
+ * Create a svc_xprt.
+ *
+ * For internal use only (e.g. nfsv4.1 backchannel).
+ * Callers should typically use the xpo_create() method.
+ */
+struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot)
+{
+ struct svc_sock *svsk;
+ struct svc_xprt *xprt = NULL;
+
+ dprintk("svc: %s\n", __func__);
+ svsk = kzalloc(sizeof(*svsk), GFP_KERNEL);
+ if (!svsk)
+ goto out;
+
+ xprt = &svsk->sk_xprt;
+ if (prot == IPPROTO_TCP)
+ svc_xprt_init(&svc_tcp_class, xprt, serv);
+ else if (prot == IPPROTO_UDP)
+ svc_xprt_init(&svc_udp_class, xprt, serv);
+ else
+ BUG();
+out:
+ dprintk("svc: %s return %p\n", __func__, xprt);
+ return xprt;
+}
+EXPORT_SYMBOL_GPL(svc_sock_create);
+
+/*
+ * Destroy a svc_sock.
+ */
+void svc_sock_destroy(struct svc_xprt *xprt)
+{
+ if (xprt)
+ kfree(container_of(xprt, struct svc_sock, sk_xprt));
+}
+EXPORT_SYMBOL_GPL(svc_sock_destroy);