NFS: Pull covers off IPv6 address parsing

Now that the needed IPv6 infrastructure is in place, allow the NFS client's
IP address parser to generate AF_INET6 addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 16 insertions, 5 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 7efc6a34b56b..3cbe32f3e88b 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -652,12 +652,23 @@ static void nfs_parse_server_address(char *value,
                                      struct sockaddr *sap,
                                      size_t *len)
 {
-        struct sockaddr_in *ap = (void *)sap;
+        if (strchr(value, ':')) {
+                struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+                u8 *addr = (u8 *)&ap->sin6_addr.in6_u;
 
-        ap->sin_family = AF_INET;
-        *len = sizeof(*ap);
-        if (in4_pton(value, -1, (u8 *)&ap->sin_addr.s_addr, '\0', NULL))
-                return;
+                ap->sin6_family = AF_INET6;
+                *len = sizeof(*ap);
+                if (in6_pton(value, -1, addr, '\0', NULL))
+                        return;
+        } else {
+                struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+                u8 *addr = (u8 *)&ap->sin_addr.s_addr;
+
+                ap->sin_family = AF_INET;
+                *len = sizeof(*ap);
+                if (in4_pton(value, -1, addr, '\0', NULL))
+                        return;
+        }
 
         sap->sa_family = AF_UNSPEC;
         *len = 0;