From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <20171123003849.17093-1-longli@exchange.microsoft.com> Cc: 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 Return-path: In-Reply-To: <20171123003849.17093-1-longli@exchange.microsoft.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: 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 -- 2.7.4