From 59dca3b28cb915745019d4f4c27d97b6b6ab12c6 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Thu, 3 Jan 2008 16:29:06 -0500
Subject: [PATCH] NFS: Fix the 'proto=' mount option
Currently, if you have a server mounted using networking protocol, you
cannot specify a different value using the 'proto=' option on another
mountpoint.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---
fs/nfs/client.c | 20 +++++++++++++-------
include/linux/nfs_fs_sb.h | 1 +
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 03d9bed7849..18fcb05a070 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -100,6 +100,7 @@ struct nfs_client_initdata {
const struct sockaddr *addr;
size_t addrlen;
const struct nfs_rpc_ops *rpc_ops;
+ int proto;
};
/*
@@ -138,6 +139,8 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
INIT_LIST_HEAD(&clp->cl_superblocks);
clp->cl_rpcclient = ERR_PTR(-EINVAL);
+ clp->cl_proto = cl_init->proto;
+
#ifdef CONFIG_NFS_V4
init_rwsem(&clp->cl_sem);
INIT_LIST_HEAD(&clp->cl_delegations);
@@ -289,6 +292,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
if (clp->rpc_ops != data->rpc_ops)
continue;
+ if (clp->cl_proto != data->proto)
+ continue;
+
/* Match the full socket address */
if (memcmp(&clp->cl_addr, data->addr, sizeof(clp->cl_addr)) != 0)
continue;
@@ -414,14 +420,14 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
/*
* Create an RPC client handle
*/
-static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
+static int nfs_create_rpc_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
rpc_authflavor_t flavor,
int flags)
{
struct rpc_clnt *clnt = NULL;
struct rpc_create_args args = {
- .protocol = proto,
+ .protocol = clp->cl_proto,
.address = (struct sockaddr *)&clp->cl_addr,
.addrsize = clp->cl_addrlen,
.timeout = timeparms,
@@ -565,8 +571,7 @@ static int nfs_init_client(struct nfs_client *clp,
* Create a client RPC handle for doing FSSTAT with UNIX auth only
* - RFC 2623, sec 2.3.2
*/
- error = nfs_create_rpc_client(clp, data->nfs_server.protocol,
- timeparms, RPC_AUTH_UNIX, 0);
+ error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX, 0);
if (error < 0)
goto error;
nfs_mark_client_ready(clp, NFS_CS_READY);
@@ -589,6 +594,7 @@ static int nfs_init_server(struct nfs_server *server,
.addr = (const struct sockaddr *)&data->nfs_server.address,
.addrlen = data->nfs_server.addrlen,
.rpc_ops = &nfs_v2_clientops,
+ .proto = data->nfs_server.protocol,
};
struct rpc_timeout timeparms;
struct nfs_client *clp;
@@ -894,7 +900,6 @@ error:
* Initialise an NFS4 client record
*/
static int nfs4_init_client(struct nfs_client *clp,
- int proto,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour)
@@ -910,7 +915,7 @@ static int nfs4_init_client(struct nfs_client *clp,
/* Check NFS protocol revision and initialize RPC op vector */
clp->rpc_ops = &nfs_v4_clientops;
- error = nfs_create_rpc_client(clp, proto, timeparms, authflavour,
+ error = nfs_create_rpc_client(clp, timeparms, authflavour,
RPC_CLNT_CREATE_DISCRTRY);
if (error < 0)
goto error;
@@ -949,6 +954,7 @@ static int nfs4_set_client(struct nfs_server *server,
.addr = addr,
.addrlen = addrlen,
.rpc_ops = &nfs_v4_clientops,
+ .proto = proto,
};
struct nfs_client *clp;
int error;
@@ -961,7 +967,7 @@ static int nfs4_set_client(struct nfs_server *server,
error = PTR_ERR(clp);
goto error;
}
- error = nfs4_init_client(clp, proto, timeparms, ip_addr, authflavour);
+ error = nfs4_init_client(clp, timeparms, ip_addr, authflavour);
if (error < 0)
goto error_put;
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index d15c9487b8f..b5ba5f79485 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -29,6 +29,7 @@ struct nfs_client {
struct rpc_clnt * cl_rpcclient;
const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
+ int cl_proto; /* Network transport protocol */
#ifdef CONFIG_NFS_V4
u64 cl_clientid; /* constant */
--
2.20.1