CIFS: SMBD: Implement function to create a SMB Direct connection
The upper layer calls this function to connect to peer through SMB Direct.
Each SMB Direct connection is based on a RDMA RC Queue Pair.
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index 2ecd5c1..862cdf9 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1646,3 +1646,20 @@
kfree(info);
return NULL;
}
+
+struct smbd_connection *smbd_get_connection(
+ struct TCP_Server_Info *server, struct sockaddr *dstaddr)
+{
+ struct smbd_connection *ret;
+ int port = SMBD_PORT;
+
+try_again:
+ ret = _smbd_get_connection(server, dstaddr, port);
+
+ /* Try SMB_PORT if SMBD_PORT doesn't work */
+ if (!ret && port == SMBD_PORT) {
+ port = SMB_PORT;
+ goto try_again;
+ }
+ return ret;
+}
diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h
index e4e65d3..25b3782 100644
--- a/fs/cifs/smbdirect.h
+++ b/fs/cifs/smbdirect.h
@@ -243,9 +243,15 @@
u8 packet[];
};
+/* Create a SMBDirect session */
+struct smbd_connection *smbd_get_connection(
+ struct TCP_Server_Info *server, struct sockaddr *dstaddr);
+
#else
#define cifs_rdma_enabled(server) 0
struct smbd_connection {};
+static inline void *smbd_get_connection(
+ struct TCP_Server_Info *server, struct sockaddr *dstaddr) {return NULL;}
#endif
#endif