9P2010.L handshake: .L protocol negotiation

This patch adds 9P2010.L protocol negotiation with the server

Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 22 insertions, 3 deletions

diff --git a/net/9p/client.c b/net/9p/client.c
index 9994676e57da..bde9f3d38c57 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -670,8 +670,25 @@ int p9_client_version(struct p9_client *c)
 
         P9_DPRINTK(P9_DEBUG_9P, ">>> TVERSION msize %d protocol %d\n",
                                                 c->msize, c->proto_version);
-        req = p9_client_rpc(c, P9_TVERSION, "ds", c->msize,
-                                p9_is_proto_dotu(c) ? "9P2000.u" : "9P2000");
+
+        switch (c->proto_version) {
+        case p9_proto_2010L:
+                req = p9_client_rpc(c, P9_TVERSION, "ds",
+                                        c->msize, "9P2010.L");
+                break;
+        case p9_proto_2000u:
+                req = p9_client_rpc(c, P9_TVERSION, "ds",
+                                        c->msize, "9P2000.u");
+                break;
+        case p9_proto_legacy:
+                req = p9_client_rpc(c, P9_TVERSION, "ds",
+                                        c->msize, "9P2000");
+                break;
+        default:
+                return -EINVAL;
+                break;
+        }
+
         if (IS_ERR(req))
                 return PTR_ERR(req);
 
@@ -683,7 +700,9 @@ int p9_client_version(struct p9_client *c)
         }
 
         P9_DPRINTK(P9_DEBUG_9P, "<<< RVERSION msize %d %s\n", msize, version);
-        if (!strncmp(version, "9P2000.u", 8))
+        if (!strncmp(version, "9P2010.L", 8))
+                c->proto_version = p9_proto_2010L;
+        else if (!strncmp(version, "9P2000.u", 8))
                 c->proto_version = p9_proto_2000u;
         else if (!strncmp(version, "9P2000", 6))
                 c->proto_version = p9_proto_legacy;