From: Cong Wang <amwang@xxxxxxxxxx>
sunrpc defines some helper functions for sockaddr, actually they
can re-use the generic functions for union inet_addr too.
Cc: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Cc: linux-nfs@xxxxxxxxxxxxxxx
Signed-off-by: Cong Wang <amwang@xxxxxxxxxx>
---
include/linux/sunrpc/addr.h | 118 +++----------------------------------------
include/net/inet_addr.h | 74 +++++++++++++++++++++------
net/core/utils.c | 25 +++++++++
3 files changed, 89 insertions(+), 128 deletions(-)
diff --git a/include/linux/sunrpc/addr.h b/include/linux/sunrpc/addr.h
index 07d8e53..10d07f6 100644
--- a/include/linux/sunrpc/addr.h
+++ b/include/linux/sunrpc/addr.h
@@ -11,6 +11,7 @@
#include <linux/in.h>
#include <linux/in6.h>
#include <net/ipv6.h>
+#include <net/inet_addr.h>
size_t rpc_ntop(const struct sockaddr *, char *, const size_t);
size_t rpc_pton(struct net *, const char *, const size_t,
@@ -21,135 +22,30 @@ size_t rpc_uaddr2sockaddr(struct net *, const char *, 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;
+ return inet_addr_get_port((const union inet_addr *)sap);
}
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;
- }
+ inet_addr_set_port((union inet_addr *)sap, port);
}
#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 IS_ENABLED(CONFIG_IPV6)
-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;
-
- if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
- return false;
- else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL)
- return sin1->sin6_scope_id == sin2->sin6_scope_id;
-
- return true;
-}
-
-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;
- dsin6->sin6_addr = ssin6->sin6_addr;
- dsin6->sin6_scope_id = ssin6->sin6_scope_id;
- return true;
-}
-#else /* !(IS_ENABLED(CONFIG_IPV6) */
-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 /* !(IS_ENABLED(CONFIG_IPV6) */
-
-/**
- * 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, but
- * compares the scope if it's a link-local address.
- *
- * 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;
+ return inet_addr_equal((const union inet_addr *)sap1,
+ (const union inet_addr *)sap2);
}
-/**
- * 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;
+ return inet_addr_copy((union inet_addr *)dst,
+ (const union inet_addr *)src);
}
/**
diff --git a/include/net/inet_addr.h b/include/net/inet_addr.h
index 3416f65..b3c59d7 100644
--- a/include/net/inet_addr.h
+++ b/include/net/inet_addr.h
@@ -14,17 +14,6 @@ union inet_addr {
};
#if IS_ENABLED(CONFIG_IPV6)
-static inline
-bool inet_addr_equal(const union inet_addr *a, const union inet_addr *b)
-{
- if (a->sa.sa_family != b->sa.sa_family)
- return false;
- if (a->sa.sa_family == AF_INET6)
- return ipv6_addr_equal(&a->sin6.sin6_addr, &b->sin6.sin6_addr);
- else
- return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
-}
-
static inline bool inet_addr_any(const union inet_addr *ipa)
{
if (ipa->sa.sa_family == AF_INET6)
@@ -43,12 +32,6 @@ static inline bool inet_addr_multicast(const union inet_addr *ipa)
#else /* !CONFIG_IPV6 */
-static inline
-bool inet_addr_equal(const union inet_addr *a, const union inet_addr *b)
-{
- return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
-}
-
static inline bool inet_addr_any(const union inet_addr *ipa)
{
return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);
@@ -60,6 +43,63 @@ static inline bool inet_addr_multicast(const union inet_addr *ipa)
}
#endif
+/**
+ * inet_addr_copy - copy the address portion of one inet_addr 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 inet_addr_copy(union inet_addr *dst,
+ const union inet_addr *src)
+{
+ dst->sa.sa_family = src->sa.sa_family;
+
+ switch (src->sa.sa_family) {
+ case AF_INET:
+ dst->sin.sin_addr.s_addr = src->sin.sin_addr.s_addr;
+ return true;
+#if IS_ENABLED(CONFIG_IPV6)
+ case AF_INET6:
+ dst->sin6.sin6_addr = src->sin6.sin6_addr;
+ dst->sin6.sin6_scope_id = src->sin6.sin6_scope_id;
+ return true;
+#endif
+ }
+
+ return false;
+}
+
+static inline
+unsigned short inet_addr_get_port(const union inet_addr *sap)
+{
+ switch (sap->sa.sa_family) {
+ case AF_INET:
+ return ntohs(sap->sin.sin_port);
+ case AF_INET6:
+ return ntohs(sap->sin6.sin6_port);
+ }
+ return 0;
+}
+
+static inline
+void inet_addr_set_port(union inet_addr *sap,
+ const unsigned short port)
+{
+ switch (sap->sa.sa_family) {
+ case AF_INET:
+ sap->sin.sin_port = htons(port);
+ break;
+ case AF_INET6:
+ sap->sin6.sin6_port = htons(port);
+ break;
+ }
+}
+
+extern bool inet_addr_equal(const union inet_addr *a, const union inet_addr *b);
extern int simple_inet_pton(const char *str, union inet_addr *addr);
#endif
diff --git a/net/core/utils.c b/net/core/utils.c
index 22dd621..837bb18 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -374,3 +374,28 @@ int simple_inet_pton(const char *str, union inet_addr *addr)
return -EINVAL;
}
EXPORT_SYMBOL(simple_inet_pton);
+
+#if IS_ENABLED(CONFIG_IPV6)
+bool inet_addr_equal(const union inet_addr *a, const union inet_addr *b)
+{
+ if (a->sa.sa_family != b->sa.sa_family)
+ return false;
+ else if (a->sa.sa_family == AF_INET6) {
+ if (!ipv6_addr_equal(&a->sin6.sin6_addr, &b->sin6.sin6_addr))
+ return false;
+ else if (__ipv6_addr_needs_scope_id(__ipv6_addr_type(&a->sin6.sin6_addr)))
+ return a->sin6.sin6_scope_id == b->sin6.sin6_scope_id;
+ else
+ return true;
+ } else
+ return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
+}
+#else
+bool inet_addr_equal(const union inet_addr *a, const union inet_addr *b)
+{
+ if (a->sa.sa_family == AF_UNSPEC)
+ return a->sa.sa_family == b->sa.sa_family;
+ return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
+}
+#endif
+EXPORT_SYMBOL(inet_addr_equal);
--
1.7.7.6
--
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