NFS: eliminate NIPQUAD(clp->cl_addr.sin_addr)

To ensure the NFS client displays IPv6 addresses properly, replace
address family-specific NIPQUAD() invocations with a call to the RPC
client to get a formatted string representing the remote peer's
address.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

4 files changed, 20 insertions, 16 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 3b21731ae571..701cd193a014 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -1279,10 +1279,10 @@ static int nfs_server_list_show(struct seq_file *m, void *v)
         /* display one transport per line on subsequent lines */
         clp = list_entry(v, struct nfs_client, cl_share_link);
 
-        seq_printf(m, "v%u %02x%02x%02x%02x %4hx %3d %s\n",
+        seq_printf(m, "v%u %s %s %3d %s\n",
                    clp->rpc_ops->version,
-                   NIPQUAD(clp->cl_addr.sin_addr),
-                   ntohs(clp->cl_addr.sin_port),
+                   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
+                   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
                    atomic_read(&clp->cl_count),
                    clp->cl_hostname);
 
@@ -1358,10 +1358,10 @@ static int nfs_volume_list_show(struct seq_file *m, void *v)
                  (unsigned long long) server->fsid.major,
                  (unsigned long long) server->fsid.minor);
 
-        seq_printf(m, "v%u %02x%02x%02x%02x %4hx %-7s %-17s\n",
+        seq_printf(m, "v%u %s %s %-7s %-17s\n",
                    clp->rpc_ops->version,
-                   NIPQUAD(clp->cl_addr.sin_addr),
-                   ntohs(clp->cl_addr.sin_port),
+                   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
+                   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
                    dev,
                    fsid);
 
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 11833f4caeaa..b03dcd8403f1 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -156,8 +156,9 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
                 if (memcmp(&delegation->stateid, &nfsi->delegation->stateid,
                                         sizeof(delegation->stateid)) != 0 ||
                                 delegation->type != nfsi->delegation->type) {
-                        printk("%s: server %u.%u.%u.%u, handed out a duplicate delegation!\n",
-                                        __FUNCTION__, NIPQUAD(clp->cl_addr.sin_addr));
+                        printk(KERN_WARNING "%s: server %s handed out "
+                                        "a duplicate delegation!\n",
+                                        __FUNCTION__, clp->cl_hostname);
                         status = -EIO;
                 }
         }
@@ -314,8 +315,9 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
         __module_get(THIS_MODULE);
         atomic_inc(&clp->cl_count);
         task = kthread_run(nfs_do_expire_all_delegations, clp,
-                        "%u.%u.%u.%u-delegreturn",
-                        NIPQUAD(clp->cl_addr.sin_addr));
+                                "%s-delegreturn",
+                                rpc_peeraddr2str(clp->cl_rpcclient,
+                                                        RPC_DISPLAY_ADDR));
         if (!IS_ERR(task))
                 return;
         nfs_put_client(clp);
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index bf94c6e0a503..f9c7432471dc 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -758,8 +758,9 @@ static void nfs4_recover_state(struct nfs_client *clp)
 
         __module_get(THIS_MODULE);
         atomic_inc(&clp->cl_count);
-        task = kthread_run(reclaimer, clp, "%u.%u.%u.%u-reclaim",
-                        NIPQUAD(clp->cl_addr.sin_addr));
+        task = kthread_run(reclaimer, clp, "%s-reclaim",
+                                rpc_peeraddr2str(clp->cl_rpcclient,
+                                                        RPC_DISPLAY_ADDR));
         if (!IS_ERR(task))
                 return;
         nfs4_clear_recover_bit(clp);
@@ -970,8 +971,8 @@ out:
         module_put_and_exit(0);
         return 0;
 out_error:
-        printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %u.%u.%u.%u with error %d\n",
-                                NIPQUAD(clp->cl_addr.sin_addr), -status);
+        printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %s"
+                        " with error %d\n", clp->cl_hostname, -status);
         set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
         goto out;
 }
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 5608e6a4c1e1..75f3cbf922a3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -491,8 +491,9 @@ static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt)
 
         nfs_show_mount_options(m, nfss, 0);
 
-        seq_printf(m, ",addr="NIPQUAD_FMT,
-                NIPQUAD(nfss->nfs_client->cl_addr.sin_addr));
+        seq_printf(m, ",addr=%s",
+                        rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient,
+                                                        RPC_DISPLAY_ADDR));
 
         return 0;
 }