From patchwork Thu Nov 23 00:38:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 840624 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yj0vH4PPTz9s1h for ; Thu, 23 Nov 2017 11:44:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752729AbdKWAmk (ORCPT ); Wed, 22 Nov 2017 19:42:40 -0500 Received: from a2nlsmtp01-03.prod.iad2.secureserver.net ([198.71.225.37]:49494 "EHLO a2nlsmtp01-03.prod.iad2.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752485AbdKWAkR (ORCPT ); Wed, 22 Nov 2017 19:40:17 -0500 Received: from linuxonhyperv.com ([107.180.71.197]) by : HOSTING RELAY : with SMTP id HfXbeuu1yNCjBHfXbeqkwu; Wed, 22 Nov 2017 17:39:15 -0700 x-originating-ip: 107.180.71.197 Received: from longli by linuxonhyperv.com with local (Exim 4.89) (envelope-from ) id 1eHfXb-0004Sw-9t; Wed, 22 Nov 2017 17:38:55 -0700 From: Long Li To: Steve French , linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Christoph Hellwig , Tom Talpey , Matthew Wilcox , Stephen Hemminger Cc: Long Li Subject: [Patch v8 04/16] CIFS: SMBD: Implement function to destroy a SMB Direct connection Date: Wed, 22 Nov 2017 17:38:37 -0700 Message-Id: <20171123003849.17093-5-longli@exchange.microsoft.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171123003849.17093-1-longli@exchange.microsoft.com> References: <20171123003849.17093-1-longli@exchange.microsoft.com> X-CMAE-Envelope: MS4wfEbZKhQiHN8OLB28r3CvcgqLLfjDxLESX+ahKVs3OiynOvtldvmSlEp1r2OHeDxi7RmbX3+k5HBORgrVtxUS5jehYlBlPauU1hMxdwdTTIBbZXi19vxo i7yguTPDS0OKPvf/CPDuN9hqFGKQWQipim7LZJkcYqOgmHhIoZg/PPGuEsi1Lh+prktIMYtwis153HCUPz2MTsD8sWKgNgvJt1qxvJAK84O9zv/Py4m0vCeK W3aFFxcRBypKIuxmVYPuPwnmtvoZVLjrdfgvpJhEtXjVA58Ejnxk7JJYIrwpzxbFR+kkUIrV8Gf2yoeIFAj+KVQ67pgCe0FHy+1c6kOKqeQ1l77JIVbJnFY1 CzVpLjpHPqcgcMjQncpSFpa/ijYwtbLyZE/lSTfjxMci2lNPgOvZ6juKtAKqZmLE9kAHq32KQh6tM8rd+0SuW+3OOkcV8wCdQM3mC+l9zDScZj+TDq9BVvkt 7QZ0pPjh0m6I+lHiqJFfDMM+zqjwLNXHr6jBBQ== Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org From: Long Li Add function to tear down a SMB Direct connection. This is used by upper layer to free all SMB Direct connection and transport resources. Signed-off-by: Long Li --- fs/cifs/smbdirect.c | 16 ++++++++++++++++ fs/cifs/smbdirect.h | 3 +++ 2 files changed, 19 insertions(+) diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c index a96058a..b462a2f 100644 --- a/fs/cifs/smbdirect.c +++ b/fs/cifs/smbdirect.c @@ -1387,6 +1387,22 @@ static void idle_connection_timer(struct work_struct *work) info->keep_alive_interval*HZ); } +/* Destroy this SMBD connection, called from upper layer */ +void smbd_destroy(struct smbd_connection *info) +{ + log_rdma_event(INFO, "destroying rdma session\n"); + + /* Kick off the disconnection process */ + smbd_disconnect_rdma_connection(info); + + log_rdma_event(INFO, "wait for transport being destroyed\n"); + wait_event(info->wait_destroy, + info->transport_status == SMBD_DESTROYED); + + destroy_workqueue(info->workqueue); + kfree(info); +} + /* * Reconnect this SMBD connection, called from upper layer * return value: 0 on success, or actual error code diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h index 8948f06..61bb649 100644 --- a/fs/cifs/smbdirect.h +++ b/fs/cifs/smbdirect.h @@ -249,6 +249,8 @@ struct smbd_connection *smbd_get_connection( /* Reconnect SMBDirect session */ int smbd_reconnect(struct TCP_Server_Info *server); +/* Destroy SMBDirect session */ +void smbd_destroy(struct smbd_connection *info); #else #define cifs_rdma_enabled(server) 0 @@ -256,6 +258,7 @@ struct smbd_connection {}; static inline void *smbd_get_connection( struct TCP_Server_Info *server, struct sockaddr *dstaddr) {return NULL;} static inline int smbd_reconnect(struct TCP_Server_Info *server) {return -1;} +static inline void smbd_destroy(struct smbd_connection *info) {} #endif #endif