From: Tom Tucker Subject: [RFC,PATCH 07/33] svc: Add per-transport delete functions Date: Thu, 27 Sep 2007 00:01:49 -0500 Message-ID: <20070927050149.12677.19880.stgit@dell3.ogc.int> References: <20070927045751.12677.98896.stgit@dell3.ogc.int> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: neilb@suse.de, gnb@sgi.com To: nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1IalVQ-0005bH-PJ for nfs@lists.sourceforge.net; Wed, 26 Sep 2007 22:01:44 -0700 Received: from 209-198-142-2-host.prismnet.net ([209.198.142.2] helo=smtp.opengridcomputing.com) by mail.sourceforge.net with esmtp (Exim 4.44) id 1IalVV-0005Ay-EB for nfs@lists.sourceforge.net; Wed, 26 Sep 2007 22:01:49 -0700 In-Reply-To: <20070927045751.12677.98896.stgit@dell3.ogc.int> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net Add transport specific xpo_detach and xpo_free functions. The xpo_detach function causes the transport to stop delivering data-ready events and enqueing the transport for I/O. The xpo_free function frees all resources associated with the particular transport instance. Signed-off-by: Tom Tucker --- include/linux/sunrpc/svc_xprt.h | 2 + net/sunrpc/svcsock.c | 58 ++++++++++++++++++++++++++++++--------- 2 files changed, 47 insertions(+), 13 deletions(-) diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 5871faa..85d84b2 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -13,6 +13,8 @@ struct svc_xprt_ops { int (*xpo_recvfrom)(struct svc_rqst *); int (*xpo_sendto)(struct svc_rqst *); void (*xpo_release)(struct svc_rqst *); + void (*xpo_detach)(struct svc_xprt *); + void (*xpo_free)(struct svc_xprt *); }; struct svc_xprt_class { diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index e7d203a..0db0a26 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -84,6 +84,8 @@ static void svc_udp_data_ready(struct s static int svc_udp_recvfrom(struct svc_rqst *); static int svc_udp_sendto(struct svc_rqst *); static void svc_close_socket(struct svc_sock *svsk); +static void svc_sock_detach(struct svc_xprt *); +static void svc_sock_free(struct svc_xprt *); static struct svc_deferred_req *svc_deferred_dequeue(struct svc_sock *svsk); static int svc_deferred_recv(struct svc_rqst *rqstp); @@ -376,16 +378,8 @@ static inline void svc_sock_put(struct svc_sock *svsk) { if (atomic_dec_and_test(&svsk->sk_inuse)) { - BUG_ON(! test_bit(SK_DEAD, &svsk->sk_flags)); - - dprintk("svc: releasing dead socket\n"); - if (svsk->sk_sock->file) - sockfd_put(svsk->sk_sock); - else - sock_release(svsk->sk_sock); - if (svsk->sk_info_authunix != NULL) - svcauth_unix_info_release(svsk->sk_info_authunix); - kfree(svsk); + BUG_ON(!test_bit(SK_DEAD, &svsk->sk_flags)); + svsk->sk_xprt.xpt_ops.xpo_free(&svsk->sk_xprt); } } @@ -903,6 +897,8 @@ static struct svc_xprt_ops svc_udp_ops = .xpo_recvfrom = svc_udp_recvfrom, .xpo_sendto = svc_udp_sendto, .xpo_release = svc_release_skb, + .xpo_detach = svc_sock_detach, + .xpo_free = svc_sock_free, }; static struct svc_xprt_class svc_udp_class = { @@ -1358,6 +1354,8 @@ static struct svc_xprt_ops svc_tcp_ops = .xpo_recvfrom = svc_tcp_recvfrom, .xpo_sendto = svc_tcp_sendto, .xpo_release = svc_release_skb, + .xpo_detach = svc_sock_detach, + .xpo_free = svc_sock_free, }; static struct svc_xprt_class svc_tcp_class = { @@ -1815,6 +1813,42 @@ bummer: } /* + * Detach the svc_sock from the socket so that no + * more callbacks occur. + */ +static void +svc_sock_detach(struct svc_xprt *xprt) +{ + struct svc_sock *svsk = (struct svc_sock *)xprt; + struct sock *sk = svsk->sk_sk; + + dprintk("svc: svc_sock_detach(%p)\n", svsk); + + /* put back the old socket callbacks */ + sk->sk_state_change = svsk->sk_ostate; + sk->sk_data_ready = svsk->sk_odata; + sk->sk_write_space = svsk->sk_owspace; +} + +/* + * Free the svc_sock's socket resources and the svc_sock itself. + */ +static void +svc_sock_free(struct svc_xprt *xprt) +{ + struct svc_sock *svsk = (struct svc_sock *)xprt; + dprintk("svc: svc_sock_free(%p)\n", svsk); + + if (svsk->sk_info_authunix != NULL) + svcauth_unix_info_release(svsk->sk_info_authunix); + if (svsk->sk_sock->file) + sockfd_put(svsk->sk_sock); + else + sock_release(svsk->sk_sock); + kfree(svsk); +} + +/* * Remove a dead socket */ static void @@ -1828,9 +1862,7 @@ svc_delete_socket(struct svc_sock *svsk) serv = svsk->sk_server; sk = svsk->sk_sk; - sk->sk_state_change = svsk->sk_ostate; - sk->sk_data_ready = svsk->sk_odata; - sk->sk_write_space = svsk->sk_owspace; + svsk->sk_xprt.xpt_ops.xpo_detach(&svsk->sk_xprt); spin_lock_bh(&serv->sv_lock); ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. 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