sunrpc: add routine for comparing addresses

[linux-2.6-block.git] / include / linux / sunrpc / clnt.h

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 37881f1a0bd70af99e72302f408adfaf7b4cb30d..b17df361be82ce19ce553d3bd9883c8d93a046bb 100644 (file)
--- 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;
@@ -151,5 +155,86 @@ 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;
+}
+
+#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);
+}
+#else  /* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,
+                                  const struct sockaddr *sap2)
+{
+       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;
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SUNRPC_CLNT_H */