Re: [PATCH] SUNRPC: create svc_xprt in proper network namespace

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On Tue, Dec 06, 2011 at 02:19:10PM +0300, Stanislav Kinsbursky wrote:
> This patch makes svc_xprt inherit network namespace link from it's socket.

And poor rdma gets left out.  OK.  Applying for 3.3 (with changelog typo
fixed).

--b.

> 
> Signed-off-by: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx>
> 
> ---
>  include/linux/sunrpc/svc_xprt.h          |    2 +-
>  net/sunrpc/svc_xprt.c                    |    6 +++---
>  net/sunrpc/svcsock.c                     |    8 +++++---
>  net/sunrpc/xprtrdma/svc_rdma_transport.c |    2 +-
>  4 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
> index 8620f79..18df516 100644
> --- a/include/linux/sunrpc/svc_xprt.h
> +++ b/include/linux/sunrpc/svc_xprt.h
> @@ -109,7 +109,7 @@ static inline int register_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u
>  
>  int	svc_reg_xprt_class(struct svc_xprt_class *);
>  void	svc_unreg_xprt_class(struct svc_xprt_class *);
> -void	svc_xprt_init(struct svc_xprt_class *, struct svc_xprt *,
> +void	svc_xprt_init(struct net *, struct svc_xprt_class *, struct svc_xprt *,
>  		      struct svc_serv *);
>  int	svc_create_xprt(struct svc_serv *, const char *, struct net *,
>  			const int, const unsigned short, int);
> diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
> index 447cd0e..f8f0627 100644
> --- a/net/sunrpc/svc_xprt.c
> +++ b/net/sunrpc/svc_xprt.c
> @@ -147,8 +147,8 @@ EXPORT_SYMBOL_GPL(svc_xprt_put);
>   * Called by transport drivers to initialize the transport independent
>   * portion of the transport instance.
>   */
> -void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt,
> -		   struct svc_serv *serv)
> +void svc_xprt_init(struct net *net, struct svc_xprt_class *xcl,
> +		   struct svc_xprt *xprt, struct svc_serv *serv)
>  {
>  	memset(xprt, 0, sizeof(*xprt));
>  	xprt->xpt_class = xcl;
> @@ -163,7 +163,7 @@ void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt,
>  	spin_lock_init(&xprt->xpt_lock);
>  	set_bit(XPT_BUSY, &xprt->xpt_flags);
>  	rpc_init_wait_queue(&xprt->xpt_bc_pending, "xpt_bc_pending");
> -	xprt->xpt_net = get_net(&init_net);
> +	xprt->xpt_net = get_net(net);
>  }
>  EXPORT_SYMBOL_GPL(svc_xprt_init);
>  
> diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
> index 71bed1c..277909e 100644
> --- a/net/sunrpc/svcsock.c
> +++ b/net/sunrpc/svcsock.c
> @@ -739,7 +739,8 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
>  {
>  	int err, level, optname, one = 1;
>  
> -	svc_xprt_init(&svc_udp_class, &svsk->sk_xprt, serv);
> +	svc_xprt_init(sock_net(svsk->sk_sock->sk), &svc_udp_class,
> +		      &svsk->sk_xprt, serv);
>  	clear_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags);
>  	svsk->sk_sk->sk_data_ready = svc_udp_data_ready;
>  	svsk->sk_sk->sk_write_space = svc_write_space;
> @@ -1343,7 +1344,8 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
>  {
>  	struct sock	*sk = svsk->sk_sk;
>  
> -	svc_xprt_init(&svc_tcp_class, &svsk->sk_xprt, serv);
> +	svc_xprt_init(sock_net(svsk->sk_sock->sk), &svc_tcp_class,
> +		      &svsk->sk_xprt, serv);
>  	set_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags);
>  	if (sk->sk_state == TCP_LISTEN) {
>  		dprintk("setting up TCP socket for listening\n");
> @@ -1659,7 +1661,7 @@ static struct svc_xprt *svc_bc_create_socket(struct svc_serv *serv,
>  		return ERR_PTR(-ENOMEM);
>  
>  	xprt = &svsk->sk_xprt;
> -	svc_xprt_init(&svc_tcp_bc_class, xprt, serv);
> +	svc_xprt_init(net, &svc_tcp_bc_class, xprt, serv);
>  
>  	serv->sv_bc_xprt = xprt;
>  
> diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> index ba1296d..894cb42 100644
> --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
> +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
> @@ -453,7 +453,7 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv,
>  
>  	if (!cma_xprt)
>  		return NULL;
> -	svc_xprt_init(&svc_rdma_class, &cma_xprt->sc_xprt, serv);
> +	svc_xprt_init(&init_net, &svc_rdma_class, &cma_xprt->sc_xprt, serv);
>  	INIT_LIST_HEAD(&cma_xprt->sc_accept_q);
>  	INIT_LIST_HEAD(&cma_xprt->sc_dto_q);
>  	INIT_LIST_HEAD(&cma_xprt->sc_rq_dto_q);
> 
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