[PATCH V2] nfs: add mount proto=rdma6 option for NFS/RDMA IPv6 addressing

[PATCH V2] nfs: add mount proto=rdma6 option for NFS/RDMA IPv6 addressing

[Shirley Ma]

RFC 5666: The "rdma" netid is to be used when IPv4 addressing
is employed by the underlying transport, and "rdma6" for IPv6
addressing.
Add mount -o proto=rdma6 option to support NFS/RDMA IPv6 addressing.

Changes from v1:
 - Integrated comments from Chuck Level, Anna Schumaker, Trodt Myklebust
 - Add a little more to the patch description to describe NFS/RDMA
   IPv6 usage
 - Removed duplicated rdma6 define
 - Removed Opt_xprt_rdma mountfamily since this doesn't support 

Signed-off-by: Shirley Ma <shirley.ma-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---

 fs/nfs/super.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f126828..c884155 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -191,6 +191,7 @@ static const match_table_t nfs_mount_option_tokens = {
 
 enum {
 	Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
+	Opt_xprt_rdma6,
 
 	Opt_xprt_err
 };
@@ -201,6 +202,7 @@ static const match_table_t nfs_xprt_protocol_tokens = {
 	{ Opt_xprt_tcp, "tcp" },
 	{ Opt_xprt_tcp6, "tcp6" },
 	{ Opt_xprt_rdma, "rdma" },
+	{ Opt_xprt_rdma6, "rdma6" },
 
 	{ Opt_xprt_err, NULL }
 };
@@ -1456,6 +1458,8 @@ static int nfs_parse_mount_options(char *raw,
 				mnt->flags |= NFS_MOUNT_TCP;
 				mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
 				break;
+			case Opt_xprt_rdma6:
+				protofamily = AF_INET6;
 			case Opt_xprt_rdma:
 				/* vector side protocols to TCP */
 				mnt->flags |= NFS_MOUNT_TCP;
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH V2] nfs: add mount proto=rdma6 option for NFS/RDMA IPv6 addressing

[Leon Romanovsky]

On Mon, Apr 04, 2016 at 11:15:27AM -0700, Shirley Ma wrote:
> RFC 5666: The "rdma" netid is to be used when IPv4 addressing
> is employed by the underlying transport, and "rdma6" for IPv6
> addressing.
> Add mount -o proto=rdma6 option to support NFS/RDMA IPv6 addressing.
> 
> Changes from v1:
>  - Integrated comments from Chuck Level, Anna Schumaker, Trodt Myklebust
>  - Add a little more to the patch description to describe NFS/RDMA
>    IPv6 usage
>  - Removed duplicated rdma6 define
>  - Removed Opt_xprt_rdma mountfamily since this doesn't support 
> 
> Signed-off-by: Shirley Ma <shirley.ma-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

It will be great if you can update the Documentation too.

Thanks
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH V2] nfs: add mount proto=rdma6 option for NFS/RDMA IPv6 addressing

[Shirley Ma]

On 04/04/2016 12:50 PM, Leon Romanovsky wrote:
> On Mon, Apr 04, 2016 at 11:15:27AM -0700, Shirley Ma wrote:
>> RFC 5666: The "rdma" netid is to be used when IPv4 addressing
>> is employed by the underlying transport, and "rdma6" for IPv6
>> addressing.
>> Add mount -o proto=rdma6 option to support NFS/RDMA IPv6 addressing.
>>
>> Changes from v1:
>>  - Integrated comments from Chuck Level, Anna Schumaker, Trodt Myklebust
>>  - Add a little more to the patch description to describe NFS/RDMA
>>    IPv6 usage
>>  - Removed duplicated rdma6 define
>>  - Removed Opt_xprt_rdma mountfamily since this doesn't support 
>>
>> Signed-off-by: Shirley Ma <shirley.ma-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
> 
> It will be great if you can update the Documentation too.

Sure, I will update documentation and man page.
 
> Thanks
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH] Documentation nfs-rdma.txt: Update nfs-rdma kernel module name and add IPv6 addressing option rdma6

[Shirley Ma]

Update NFS/RDMA transport module name from client xprtrdma,
server svcrdma to rpcrdma which supports both server and client.
Add mount proto option rdma6 to use IPv6 addressing for NFS/RDMA.

Signed-off-by: Shirley Ma <shirley.ma-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---

 Documentation/filesystems/nfs/nfs-rdma.txt | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/Documentation/filesystems/nfs/nfs-rdma.txt b/Documentation/filesystems/nfs/nfs-rdma.txt
index 1e65645..6101b57 100644
--- a/Documentation/filesystems/nfs/nfs-rdma.txt
+++ b/Documentation/filesystems/nfs/nfs-rdma.txt
@@ -238,12 +238,13 @@ NFS/RDMA Setup
 
   - Start the NFS server
 
-    If the NFS/RDMA server was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
-    kernel config), load the RDMA transport module:
+    If the NFS/RDMA was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
+    kernel config), load the RDMA transport module which supports both client
+    and server:
 
-    $ modprobe svcrdma
+    $ modprobe rpcrdma
 
-    Regardless of how the server was built (module or built-in), start the
+    Regardless of how the rpcrdma was built (module or built-in), start the
     server:
 
     $ /etc/init.d/nfs start
@@ -258,15 +259,14 @@ NFS/RDMA Setup
 
   - On the client system
 
-    If the NFS/RDMA client was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
-    kernel config), load the RDMA client module:
+    Regardless of how rpcrdma was built (module or built-in), use this command
+    to mount the NFS/RDMA server through IPv4 addressing:
 
-    $ modprobe xprtrdma.ko
+    $ mount -o rdma,port=20049 <IPoIB-server-name-or-IPv4-address>:/<export> /mnt
 
-    Regardless of how the client was built (module or built-in), use this
-    command to mount the NFS/RDMA server:
+    or through IPv6 addressing
 
-    $ mount -o rdma,port=20049 <IPoIB-server-name-or-address>:/<export> /mnt
+    $ mount -o rdma6,port=20049 [<IPoIB-server-name-or-IPv6-address>]:/<export> /mnt
 
     To verify that the mount is using RDMA, run "cat /proc/mounts" and check
     the "proto" field for the given mount.
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html