SUNRPC: Move clnt->cl_server into struct rpc_xprt
When the cl_xprt field is updated, the cl_server field will also have
to change. Since the contents of cl_server follow the remote endpoint
of cl_xprt, just move that field to the rpc_xprt.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[ cel: simplify check_gss_callback_principal(), whitespace changes ]
[ cel: forward ported to 3.4 ]
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 4a122ae..2afe233 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -332,7 +332,6 @@
int
check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp)
{
- struct rpc_clnt *r = clp->cl_rpcclient;
char *p = svc_gss_principal(rqstp);
if (rqstp->rq_authop->flavour != RPC_AUTH_GSS)
@@ -353,7 +352,7 @@
if (memcmp(p, "nfs@", 4) != 0)
return 0;
p += 4;
- if (strcmp(p, r->cl_server) != 0)
+ if (strcmp(p, clp->cl_hostname) != 0)
return 0;
return 1;
}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 671510c..54767dd 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1100,6 +1100,7 @@
if (state == NULL)
goto err_put_inode;
if (data->o_res.delegation_type != 0) {
+ struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
int delegation_flags = 0;
rcu_read_lock();
@@ -1111,7 +1112,7 @@
pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
"returning a delegation for "
"OPEN(CLAIM_DELEGATE_CUR)\n",
- NFS_CLIENT(inode)->cl_server);
+ clp->cl_hostname);
} else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
nfs_inode_set_delegation(state->inode,
data->owner->so_cred,
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index e3d12b4..acd5502 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -41,7 +41,6 @@
cl_vers, /* RPC version number */
cl_maxproc; /* max procedure number */
- const char * cl_server; /* server machine name */
const char * cl_protname; /* protocol name */
struct rpc_auth * cl_auth; /* authenticator */
struct rpc_stat * cl_stats; /* per-program statistics */
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index ea712f9..77d278d 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -229,6 +229,7 @@
} stat;
struct net *xprt_net;
+ const char *servername;
const char *address_strings[RPC_DISPLAY_MAX];
};
@@ -258,6 +259,7 @@
struct sockaddr * srcaddr; /* optional local address */
struct sockaddr * dstaddr; /* remote peer address */
size_t addrlen;
+ const char *servername;
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
};
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 7783fc0..e39ace9 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -265,15 +265,8 @@
struct rpc_clnt *clnt = NULL;
struct rpc_auth *auth;
int err;
- size_t len;
/* sanity check the name before trying to print it */
- err = -EINVAL;
- len = strlen(args->servername);
- if (len > RPC_MAXNETNAMELEN)
- goto out_no_rpciod;
- len++;
-
dprintk("RPC: creating %s client for %s (xprt %p)\n",
program->name, args->servername, xprt);
@@ -296,10 +289,6 @@
goto out_err;
clnt->cl_parent = clnt;
- clnt->cl_server = kstrdup(args->servername, GFP_KERNEL);
- if (clnt->cl_server == NULL)
- goto out_no_server;
-
rcu_assign_pointer(clnt->cl_xprt, xprt);
clnt->cl_procinfo = version->procs;
clnt->cl_maxproc = version->nrprocs;
@@ -363,8 +352,6 @@
out_no_principal:
rpc_free_iostats(clnt->cl_metrics);
out_no_stats:
- kfree(clnt->cl_server);
-out_no_server:
kfree(clnt);
out_err:
xprt_put(xprt);
@@ -394,6 +381,7 @@
.srcaddr = args->saddress,
.dstaddr = args->address,
.addrlen = args->addrsize,
+ .servername = args->servername,
.bc_xprt = args->bc_xprt,
};
char servername[48];
@@ -402,7 +390,7 @@
* If the caller chooses not to specify a hostname, whip
* up a string representation of the passed-in address.
*/
- if (args->servername == NULL) {
+ if (xprtargs.servername == NULL) {
struct sockaddr_un *sun =
(struct sockaddr_un *)args->address;
struct sockaddr_in *sin =
@@ -429,7 +417,7 @@
* address family isn't recognized. */
return ERR_PTR(-EINVAL);
}
- args->servername = servername;
+ xprtargs.servername = servername;
}
xprt = xprt_create_transport(&xprtargs);
@@ -488,9 +476,6 @@
new = kmemdup(clnt, sizeof(*new), GFP_KERNEL);
if (!new)
goto out_no_clnt;
- new->cl_server = kstrdup(clnt->cl_server, GFP_KERNEL);
- if (new->cl_server == NULL)
- goto out_no_server;
new->cl_parent = clnt;
/* Turn off autobind on clones */
new->cl_autobind = 0;
@@ -528,8 +513,6 @@
out_no_principal:
rpc_free_iostats(new->cl_metrics);
out_no_stats:
- kfree(new->cl_server);
-out_no_server:
kfree(new);
out_no_clnt:
dprintk("RPC: %s: returned error %d\n", __func__, err);
@@ -574,8 +557,9 @@
*/
void rpc_shutdown_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: shutting down %s client for %s\n",
- clnt->cl_protname, clnt->cl_server);
+ dprintk_rcu("RPC: shutting down %s client for %s\n",
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
while (!list_empty(&clnt->cl_tasks)) {
rpc_killall_tasks(clnt);
@@ -593,11 +577,11 @@
static void
rpc_free_client(struct rpc_clnt *clnt)
{
- dprintk("RPC: destroying %s client for %s\n",
- clnt->cl_protname, clnt->cl_server);
+ dprintk_rcu("RPC: destroying %s client for %s\n",
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
if (clnt->cl_parent != clnt)
rpc_release_client(clnt->cl_parent);
- kfree(clnt->cl_server);
rpc_unregister_client(clnt);
rpc_clnt_remove_pipedir(clnt);
rpc_free_iostats(clnt->cl_metrics);
@@ -1685,8 +1669,11 @@
}
if (RPC_IS_SOFT(task)) {
if (clnt->cl_chatty)
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s not responding, timed out\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
if (task->tk_flags & RPC_TASK_TIMEOUT)
rpc_exit(task, -ETIMEDOUT);
else
@@ -1696,9 +1683,13 @@
if (!(task->tk_flags & RPC_CALL_MAJORSEEN)) {
task->tk_flags |= RPC_CALL_MAJORSEEN;
- if (clnt->cl_chatty)
+ if (clnt->cl_chatty) {
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s not responding, still trying\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
+ }
}
rpc_force_rebind(clnt);
/*
@@ -1727,9 +1718,13 @@
dprint_status(task);
if (task->tk_flags & RPC_CALL_MAJORSEEN) {
- if (clnt->cl_chatty)
+ if (clnt->cl_chatty) {
+ rcu_read_lock();
printk(KERN_NOTICE "%s: server %s OK\n",
- clnt->cl_protname, clnt->cl_server);
+ clnt->cl_protname,
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
+ }
task->tk_flags &= ~RPC_CALL_MAJORSEEN;
}
@@ -1807,6 +1802,7 @@
static __be32 *
rpc_verify_header(struct rpc_task *task)
{
+ struct rpc_clnt *clnt = task->tk_client;
struct kvec *iov = &task->tk_rqstp->rq_rcv_buf.head[0];
int len = task->tk_rqstp->rq_rcv_buf.len >> 2;
__be32 *p = iov->iov_base;
@@ -1879,8 +1875,11 @@
task->tk_action = call_bind;
goto out_retry;
case RPC_AUTH_TOOWEAK:
+ rcu_read_lock();
printk(KERN_NOTICE "RPC: server %s requires stronger "
- "authentication.\n", task->tk_client->cl_server);
+ "authentication.\n",
+ rcu_dereference(clnt->cl_xprt)->servername);
+ rcu_read_unlock();
break;
default:
dprintk("RPC: %5u %s: unknown auth error: %x\n",
@@ -1903,28 +1902,27 @@
case RPC_SUCCESS:
return p;
case RPC_PROG_UNAVAIL:
- dprintk("RPC: %5u %s: program %u is unsupported by server %s\n",
- task->tk_pid, __func__,
- (unsigned int)task->tk_client->cl_prog,
- task->tk_client->cl_server);
+ dprintk_rcu("RPC: %5u %s: program %u is unsupported "
+ "by server %s\n", task->tk_pid, __func__,
+ (unsigned int)clnt->cl_prog,
+ rcu_dereference(clnt->cl_xprt)->servername);
error = -EPFNOSUPPORT;
goto out_err;
case RPC_PROG_MISMATCH:
- dprintk("RPC: %5u %s: program %u, version %u unsupported by "
- "server %s\n", task->tk_pid, __func__,
- (unsigned int)task->tk_client->cl_prog,
- (unsigned int)task->tk_client->cl_vers,
- task->tk_client->cl_server);
+ dprintk_rcu("RPC: %5u %s: program %u, version %u unsupported "
+ "by server %s\n", task->tk_pid, __func__,
+ (unsigned int)clnt->cl_prog,
+ (unsigned int)clnt->cl_vers,
+ rcu_dereference(clnt->cl_xprt)->servername);
error = -EPROTONOSUPPORT;
goto out_err;
case RPC_PROC_UNAVAIL:
- dprintk("RPC: %5u %s: proc %s unsupported by program %u, "
+ dprintk_rcu("RPC: %5u %s: proc %s unsupported by program %u, "
"version %u on server %s\n",
task->tk_pid, __func__,
rpc_proc_name(task),
- task->tk_client->cl_prog,
- task->tk_client->cl_vers,
- task->tk_client->cl_server);
+ clnt->cl_prog, clnt->cl_vers,
+ rcu_dereference(clnt->cl_xprt)->servername);
error = -EOPNOTSUPP;
goto out_err;
case RPC_GARBAGE_ARGS:
@@ -1938,7 +1936,7 @@
}
out_garbage:
- task->tk_client->cl_stats->rpcgarbage++;
+ clnt->cl_stats->rpcgarbage++;
if (task->tk_garb_retry) {
task->tk_garb_retry--;
dprintk("RPC: %5u %s: retrying\n",
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 3d30943..7d96e3c 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -404,7 +404,8 @@
struct rpc_clnt *clnt = m->private;
rcu_read_lock();
- seq_printf(m, "RPC server: %s\n", clnt->cl_server);
+ seq_printf(m, "RPC server: %s\n",
+ rcu_dereference(clnt->cl_xprt)->servername);
seq_printf(m, "service: %s (%d) version %d\n", clnt->cl_protname,
clnt->cl_prog, clnt->cl_vers);
seq_printf(m, "address: %s\n", rpc_peeraddr2str(clnt, RPC_DISPLAY_ADDR));
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 4f8af63..e699ff0 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -663,7 +663,7 @@
dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
task->tk_pid, __func__,
- clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
+ xprt->servername, clnt->cl_prog, clnt->cl_vers, xprt->prot);
/* Put self on the wait queue to ensure we get notified if
* some other task is already attempting to bind the port */
@@ -714,7 +714,7 @@
dprintk("RPC: %5u %s: trying rpcbind version %u\n",
task->tk_pid, __func__, bind_version);
- rpcb_clnt = rpcb_create(xprt->xprt_net, clnt->cl_server, sap, salen,
+ rpcb_clnt = rpcb_create(xprt->xprt_net, xprt->servername, sap, salen,
xprt->prot, bind_version);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 32e3794..0cbcd1a 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -66,6 +66,7 @@
static void xprt_request_init(struct rpc_task *, struct rpc_xprt *);
static void xprt_connect_status(struct rpc_task *task);
static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *);
+static void xprt_destroy(struct rpc_xprt *xprt);
static DEFINE_SPINLOCK(xprt_list_lock);
static LIST_HEAD(xprt_list);
@@ -751,7 +752,7 @@
default:
dprintk("RPC: %5u xprt_connect_status: error %d connecting to "
"server %s\n", task->tk_pid, -task->tk_status,
- task->tk_client->cl_server);
+ xprt->servername);
xprt_release_write(xprt, task);
task->tk_status = -EIO;
}
@@ -1229,6 +1230,17 @@
(unsigned long)xprt);
else
init_timer(&xprt->timer);
+
+ if (strlen(args->servername) > RPC_MAXNETNAMELEN) {
+ xprt_destroy(xprt);
+ return ERR_PTR(-EINVAL);
+ }
+ xprt->servername = kstrdup(args->servername, GFP_KERNEL);
+ if (xprt->servername == NULL) {
+ xprt_destroy(xprt);
+ return ERR_PTR(-ENOMEM);
+ }
+
dprintk("RPC: created transport %p with %u slots\n", xprt,
xprt->max_reqs);
out:
@@ -1251,6 +1263,7 @@
rpc_destroy_wait_queue(&xprt->sending);
rpc_destroy_wait_queue(&xprt->backlog);
cancel_work_sync(&xprt->task_cleanup);
+ kfree(xprt->servername);
/*
* Tear down transport state and free the rpc_xprt
*/