1 files changed, 154 insertions, 3 deletions

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 37881f1a0bd7..8ed9642a5a76 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -9,6 +9,10 @@
 #ifndef _LINUX_SUNRPC_CLNT_H
 #define _LINUX_SUNRPC_CLNT_H
 
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+
 #include <linux/sunrpc/msg_prot.h>
 #include <linux/sunrpc/sched.h>
 #include <linux/sunrpc/xprt.h>
@@ -17,6 +21,8 @@
 #include <linux/sunrpc/xdr.h>
 #include <linux/sunrpc/timer.h>
 #include <asm/signal.h>
+#include <linux/path.h>
+#include <net/ipv6.h>
 
 struct rpc_inode;
 
@@ -50,9 +56,7 @@ struct rpc_clnt {
 
         int                     cl_nodelen;     /* nodename length */
         char                    cl_nodename[UNX_MAXNODENAME];
-        char                    cl_pathname[30];/* Path in rpc_pipe_fs */
-        struct vfsmount *       cl_vfsmnt;
-        struct dentry *         cl_dentry;      /* inode */
+        struct path             cl_path;
         struct rpc_clnt *       cl_parent;      /* Points to parent of clones */
         struct rpc_rtt          cl_rtt_default;
         struct rpc_timeout      cl_timeout_default;
@@ -110,6 +114,7 @@ struct rpc_create_args {
         rpc_authflavor_t        authflavor;
         unsigned long           flags;
         char                    *client_name;
+        struct svc_xprt         *bc_xprt;       /* NFSv4.1 backchannel */
 };
 
 /* Values for "flags" field */
@@ -151,5 +156,151 @@ void		rpc_force_rebind(struct rpc_clnt *);
 size_t          rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
 const char      *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
 
+size_t          rpc_ntop(const struct sockaddr *, char *, const size_t);
+size_t          rpc_pton(const char *, const size_t,
+                         struct sockaddr *, const size_t);
+char *          rpc_sockaddr2uaddr(const struct sockaddr *);
+size_t          rpc_uaddr2sockaddr(const char *, const size_t,
+                                   struct sockaddr *, const size_t);
+
+static inline unsigned short rpc_get_port(const struct sockaddr *sap)
+{
+        switch (sap->sa_family) {
+        case AF_INET:
+                return ntohs(((struct sockaddr_in *)sap)->sin_port);
+        case AF_INET6:
+                return ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
+        }
+        return 0;
+}
+
+static inline void rpc_set_port(struct sockaddr *sap,
+                                const unsigned short port)
+{
+        switch (sap->sa_family) {
+        case AF_INET:
+                ((struct sockaddr_in *)sap)->sin_port = htons(port);
+                break;
+        case AF_INET6:
+                ((struct sockaddr_in6 *)sap)->sin6_port = htons(port);
+                break;
+        }
+}
+
+#define IPV6_SCOPE_DELIMITER            '%'
+#define IPV6_SCOPE_ID_LEN               sizeof("%nnnnnnnnnn")
+
+static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1,
+                                   const struct sockaddr *sap2)
+{
+        const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1;
+        const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2;
+
+        return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
+}
+
+static inline bool __rpc_copy_addr4(struct sockaddr *dst,
+                                    const struct sockaddr *src)
+{
+        const struct sockaddr_in *ssin = (struct sockaddr_in *) src;
+        struct sockaddr_in *dsin = (struct sockaddr_in *) dst;
+
+        dsin->sin_family = ssin->sin_family;
+        dsin->sin_addr.s_addr = ssin->sin_addr.s_addr;
+        return true;
+}
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
+                                   const struct sockaddr *sap2)
+{
+        const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1;
+        const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2;
+        return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr);
+}
+
+static inline bool __rpc_copy_addr6(struct sockaddr *dst,
+                                    const struct sockaddr *src)
+{
+        const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src;
+        struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst;
+
+        dsin6->sin6_family = ssin6->sin6_family;
+        ipv6_addr_copy(&dsin6->sin6_addr, &ssin6->sin6_addr);
+        return true;
+}
+#else   /* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
+                                   const struct sockaddr *sap2)
+{
+        return false;
+}
+
+static inline bool __rpc_copy_addr6(struct sockaddr *dst,
+                                    const struct sockaddr *src)
+{
+        return false;
+}
+#endif  /* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+
+/**
+ * rpc_cmp_addr - compare the address portion of two sockaddrs.
+ * @sap1: first sockaddr
+ * @sap2: second sockaddr
+ *
+ * Just compares the family and address portion. Ignores port, scope, etc.
+ * Returns true if the addrs are equal, false if they aren't.
+ */
+static inline bool rpc_cmp_addr(const struct sockaddr *sap1,
+                                const struct sockaddr *sap2)
+{
+        if (sap1->sa_family == sap2->sa_family) {
+                switch (sap1->sa_family) {
+                case AF_INET:
+                        return __rpc_cmp_addr4(sap1, sap2);
+                case AF_INET6:
+                        return __rpc_cmp_addr6(sap1, sap2);
+                }
+        }
+        return false;
+}
+
+/**
+ * rpc_copy_addr - copy the address portion of one sockaddr to another
+ * @dst: destination sockaddr
+ * @src: source sockaddr
+ *
+ * Just copies the address portion and family. Ignores port, scope, etc.
+ * Caller is responsible for making certain that dst is large enough to hold
+ * the address in src. Returns true if address family is supported. Returns
+ * false otherwise.
+ */
+static inline bool rpc_copy_addr(struct sockaddr *dst,
+                                 const struct sockaddr *src)
+{
+        switch (src->sa_family) {
+        case AF_INET:
+                return __rpc_copy_addr4(dst, src);
+        case AF_INET6:
+                return __rpc_copy_addr6(dst, src);
+        }
+        return false;
+}
+
+/**
+ * rpc_get_scope_id - return scopeid for a given sockaddr
+ * @sa: sockaddr to get scopeid from
+ *
+ * Returns the value of the sin6_scope_id for AF_INET6 addrs, or 0 if
+ * not an AF_INET6 address.
+ */
+static inline u32 rpc_get_scope_id(const struct sockaddr *sa)
+{
+        if (sa->sa_family != AF_INET6)
+                return 0;
+
+        return ((struct sockaddr_in6 *) sa)->sin6_scope_id;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SUNRPC_CLNT_H */