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[v4,15/22] CIFS: SMBD: Upper layer sends data via RDMA send

Message ID	20171002023030.3582-16-longli@exchange.microsoft.com
State	New
Headers	show Return-Path: <linux-cifs-owner@vger.kernel.org> From: Long Li <longli@exchange.microsoft.com> To: Steve French <sfrench@samba.org>, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Christoph Hellwig <hch@infradead.org>, Tom Talpey <ttalpey@microsoft.com>, Matthew Wilcox <mawilcox@microsoft.com> Cc: Long Li <longli@microsoft.com> Subject: [Patch v4 15/22] CIFS: SMBD: Upper layer sends data via RDMA send Date: Sun, 1 Oct 2017 19:30:23 -0700 Message-Id: <20171002023030.3582-16-longli@exchange.microsoft.com> In-Reply-To: <20171002023030.3582-1-longli@exchange.microsoft.com> References: <20171002023030.3582-1-longli@exchange.microsoft.com> Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk
Series	CIFS: Implement SMBDirect \| expand [v4,00/22] CIFS: Implement SMBDirect [v4,01/22] CIFS: SMBD: Add SMBDirect protocol initial values and constants [v4,02/22] CIFS: SMBD: Establish SMBDirect connection [v4,03/22] CIFS: SMBD: export protocol initial values [v4,04/22] CIFS: SMBD: Add rdma mount option [v4,05/22] CIFS: SMBD: Implement function to create a SMBDirect connection [v4,06/22] CIFS: SMBD: Upper layer connects to SMBDirect session [v4,07/22] CIFS: SMBD: Implement function to reconnect to a SMBDirect transport [v4,08/22] CIFS: SMBD: Upper layer reconnects to SMBDirect session [v4,09/22] CIFS: SMBD: Implement function to destroy a SMBDirect connection [v4,10/22] CIFS: SMBD: Upper layer destroys SMBDirect session on shutdown or umount [v4,11/22] CIFS: SMBD: Set SMBDirect maximum read or write size for I/O [v4,12/22] CIFS: SMBD: Implement function to receive data via RDMA receive [v4,13/22] CIFS: SMBD: Upper layer receives data via RDMA receive [v4,14/22] CIFS: SMBD: Implement function to send data via RDMA send [v4,15/22] CIFS: SMBD: Upper layer sends data via RDMA send [v4,16/22] CIFS: SMBD: Fix the definition for SMB2_CHANNEL_RDMA_V1_INVALIDATE [v4,17/22] CIFS: SMBD: Implement RDMA memory registration [v4,18/22] CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration [v4,19/22] CIFS: SMBD: Add parameter rdata to smb2_new_read_req [v4,20/22] CIFS: SMBD: Read correct returned data length for RDMA write (SMB read) I/O [v4,21/22] CIFS: SMBD: Upper layer performs SMB read via RDMA write through memory registration [v4,22/22] CIFS: SMBD: Add SMBDirect debug counters

Commit Message

Long Li Oct. 2, 2017, 2:30 a.m. UTC

From: Long Li <longli@microsoft.com>

With SMBDirect connected, use it for sending data via RDMA send.

Signed-off-by: Long Li <longli@microsoft.com>
---
 fs/cifs/transport.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff mbox series

Patch

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 7efbab0..3a9b5a0 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -37,6 +37,7 @@ 
 #include "cifsglob.h"
 #include "cifsproto.h"
 #include "cifs_debug.h"
+#include "smbdirect.h"
 
 void
 cifs_wake_up_task(struct mid_q_entry *mid)
@@ -230,6 +231,11 @@  __smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
 	struct msghdr smb_msg;
 	int val = 1;
 
+	if (server->smbd_conn) {
+		rc = smbd_send(server->smbd_conn, rqst);
+		goto done;
+	}
+
 	if (ssocket == NULL)
 		return -ENOTSOCK;
 
@@ -299,6 +305,7 @@  __smb_send_rqst(struct TCP_Server_Info *server, struct smb_rqst *rqst)
 		server->tcpStatus = CifsNeedReconnect;
 	}
 
+done:
 	if (rc < 0 && rc != -EINTR)
 		cifs_dbg(VFS, "Error %d sending data on socket to server\n",
 			 rc);