"noresvport" and "discrtry" can be passed to nfs_create_rpc_client()
by setting flags in the passed-in nfs_client. This change makes it
easy to add new flags.
Note that these settings are now "sticky" over the lifetime of a
struct nfs_client, and may even be copied when an nfs_client is
cloned.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfs/client.c | 42 ++++++++++++++++++++----------------------
fs/nfs/internal.h | 6 ++----
include/linux/nfs_fs_sb.h | 3 +++
include/linux/nfs_xdr.h | 2 +-
4 files changed, 26 insertions(+), 27 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index c19af91..d5613d3 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -129,6 +129,7 @@ const struct rpc_program nfsacl_program = {
#endif /* CONFIG_NFS_V3_ACL */
struct nfs_client_initdata {
+ unsigned long init_flags;
const char *hostname;
const struct sockaddr *addr;
size_t addrlen;
@@ -540,8 +541,7 @@ static struct nfs_client *
nfs_get_client(const struct nfs_client_initdata *cl_init,
const struct rpc_timeout *timeparms,
const char *ip_addr,
- rpc_authflavor_t authflavour,
- int noresvport)
+ rpc_authflavor_t authflavour)
{
struct nfs_client *clp, *new = NULL;
struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
@@ -563,9 +563,10 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
if (new) {
list_add(&new->cl_share_link, &nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
+ new->cl_flags = cl_init->init_flags;
return cl_init->rpc_ops->init_client(new,
timeparms, ip_addr,
- authflavour, noresvport);
+ authflavour);
}
spin_unlock(&nn->nfs_client_lock);
@@ -649,8 +650,7 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
*/
static int nfs_create_rpc_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
- rpc_authflavor_t flavor,
- int discrtry, int noresvport)
+ rpc_authflavor_t flavor)
{
struct rpc_clnt *clnt = NULL;
struct rpc_create_args args = {
@@ -665,9 +665,9 @@ static int nfs_create_rpc_client(struct nfs_client *clp,
.authflavor = flavor,
};
- if (discrtry)
+ if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))
args.flags |= RPC_CLNT_CREATE_DISCRTRY;
- if (noresvport)
+ if (test_bit(NFS_CS_NORESVPORT, &clp->cl_flags))
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
if (!IS_ERR(clp->cl_rpcclient))
@@ -807,14 +807,12 @@ static int nfs_init_server_rpcclient(struct nfs_server *server,
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: IP presentation address (not used)
* @authflavor: authentication flavor for underlying RPC transport
- * @noresvport: set if RPC transport can use an ephemeral source port
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
struct nfs_client *nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
- const char *ip_addr, rpc_authflavor_t authflavour,
- int noresvport)
+ const char *ip_addr, rpc_authflavor_t authflavour)
{
int error;
@@ -828,8 +826,7 @@ struct nfs_client *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, timeparms, RPC_AUTH_UNIX,
- 0, noresvport);
+ error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX);
if (error < 0)
goto error;
nfs_mark_client_ready(clp, NFS_CS_READY);
@@ -869,10 +866,11 @@ static int nfs_init_server(struct nfs_server *server,
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
+ if (data->flags & NFS_MOUNT_NORESVPORT)
+ set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
/* Allocate or find a client reference we can use */
- clp = nfs_get_client(&cl_init, &timeparms, NULL, RPC_AUTH_UNIX,
- data->flags & NFS_MOUNT_NORESVPORT);
+ clp = nfs_get_client(&cl_init, &timeparms, NULL, RPC_AUTH_UNIX);
if (IS_ERR(clp)) {
dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
return PTR_ERR(clp);
@@ -1352,15 +1350,13 @@ static int nfs4_init_client_minor_version(struct nfs_client *clp)
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: callback IP address in presentation format
* @authflavor: authentication flavor for underlying RPC transport
- * @noresvport: set if RPC transport can use an ephemeral source port
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
struct nfs_client *nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
- rpc_authflavor_t authflavour,
- int noresvport)
+ rpc_authflavor_t authflavour)
{
char buf[INET6_ADDRSTRLEN + 1];
int error;
@@ -1374,8 +1370,8 @@ struct nfs_client *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, timeparms, authflavour,
- 1, noresvport);
+ __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
+ error = nfs_create_rpc_client(clp, timeparms, authflavour);
if (error < 0)
goto error;
@@ -1443,9 +1439,11 @@ static int nfs4_set_client(struct nfs_server *server,
dprintk("--> nfs4_set_client()\n");
+ if (server->flags & NFS_MOUNT_NORESVPORT)
+ set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
+
/* Allocate or find a client reference we can use */
- clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour,
- server->flags & NFS_MOUNT_NORESVPORT);
+ clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour);
if (IS_ERR(clp)) {
error = PTR_ERR(clp);
goto error;
@@ -1504,7 +1502,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
* (section 13.1 RFC 5661).
*/
clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr,
- mds_clp->cl_rpcclient->cl_auth->au_flavor, 0);
+ mds_clp->cl_rpcclient->cl_auth->au_flavor);
dprintk("<-- %s %p\n", __func__, clp);
return clp;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 687dab2..b9c6f1f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -157,13 +157,11 @@ nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
- rpc_authflavor_t authflavour,
- int noresvport);
+ rpc_authflavor_t authflavour);
extern struct nfs_client *nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
- rpc_authflavor_t authflavour,
- int noresvport);
+ rpc_authflavor_t authflavour);
extern struct nfs_server *nfs_create_server(
const struct nfs_parsed_mount_data *,
struct nfs_fh *);
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index fbec57d..3a99f52 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -35,6 +35,9 @@ struct nfs_client {
#define NFS_CS_RENEWD 3 /* - renewd started */
#define NFS_CS_STOP_RENEW 4 /* no more state to renew */
#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
+ unsigned long cl_flags; /* behavior switches */
+#define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */
+#define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */
struct sockaddr_storage cl_addr; /* server identifier */
size_t cl_addrlen;
char * cl_hostname; /* hostname of server */
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index a789c1e..a1f368c 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1289,7 +1289,7 @@ struct nfs_rpc_ops {
struct iattr *iattr);
struct nfs_client *
(*init_client) (struct nfs_client *, const struct rpc_timeout *,
- const char *, rpc_authflavor_t, int);
+ const char *, rpc_authflavor_t);
int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
};
--
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