> On May 20, 2016, at 11:48 AM, bfields@xxxxxxxxxxxx wrote:
>
> From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
>
> This should fix failures like:
>
> # rpc.nfsd --rdma
> rpc.nfsd: Unable to request RDMA services: Protocol not supported
>
> Reported-by: Steve Dickson <steved@xxxxxxxxxx>
> Tested-by: Steve Dickson <steved@xxxxxxxxxx>
> Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Reviewed-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> ---
> net/sunrpc/svc_xprt.c | 23 +++++++++++++++++++----
> 1 file changed, 19 insertions(+), 4 deletions(-)
>
> I'm intending to apply this for 4.7.
>
> diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
> index 7422f28818b2..f5572e31d518 100644
> --- a/net/sunrpc/svc_xprt.c
> +++ b/net/sunrpc/svc_xprt.c
> @@ -244,13 +244,12 @@ void svc_add_new_perm_xprt(struct svc_serv *serv, struct svc_xprt *new)
> svc_xprt_received(new);
> }
>
> -int svc_create_xprt(struct svc_serv *serv, const char *xprt_name,
> +int _svc_create_xprt(struct svc_serv *serv, const char *xprt_name,
> struct net *net, const int family,
> const unsigned short port, int flags)
> {
> struct svc_xprt_class *xcl;
>
> - dprintk("svc: creating transport %s[%d]\n", xprt_name, port);
> spin_lock(&svc_xprt_class_lock);
> list_for_each_entry(xcl, &svc_xprt_class_list, xcl_list) {
> struct svc_xprt *newxprt;
> @@ -274,12 +273,28 @@ int svc_create_xprt(struct svc_serv *serv, const char *xprt_name,
> }
> err:
> spin_unlock(&svc_xprt_class_lock);
> - dprintk("svc: transport %s not found\n", xprt_name);
> -
> /* This errno is exposed to user space. Provide a reasonable
> * perror msg for a bad transport. */
> return -EPROTONOSUPPORT;
> }
> +
> +int svc_create_xprt(struct svc_serv *serv, const char *xprt_name,
> + struct net *net, const int family,
> + const unsigned short port, int flags)
> +{
> + int err;
> +
> + dprintk("svc: creating transport %s[%d]\n", xprt_name, port);
> + err = _svc_create_xprt(serv, xprt_name, net, family, port, flags);
> + if (err == -EPROTONOSUPPORT) {
> + request_module("svc%s", xprt_name);
> + err = _svc_create_xprt(serv, xprt_name, net, family, port, flags);
> + }
> + if (err)
> + dprintk("svc: transport %s not found, err %d\n",
> + xprt_name, err);
> + return err;
> +}
> EXPORT_SYMBOL_GPL(svc_create_xprt);
>
> /*
> --
> 2.5.5
>
> --
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--
Chuck Lever
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