This patch against 2.5.59 adds bits of RFC 2553 Basic Socket Interface
Extensions for IPv6; specifically the in6addr_any wildcard address and
in6addr_loopback address structures, the respective IN6ADDR_*_INIT
constants, and moves the definition of struct sockaddr_storage from the
SCTP code to a common IPv6 header file. These changes will assist in
making certain networking kernel code portable across multiple address
families.
--
Bruce Allan
Linux Technology Center
IBM Corporation, Beaverton OR
========================================================================
diff -Naur linux-2.5.59/include/linux/in6.h linux-2.5.59-RFC2553/include/linux/in6.h
--- linux-2.5.59/include/linux/in6.h 2003-02-12 10:29:14.000000000 -0800
+++ linux-2.5.59-RFC2553/include/linux/in6.h 2003-02-12 10:09:23.000000000 -0800
@@ -40,6 +40,15 @@
#define s6_addr32 in6_u.u6_addr32
};
+/* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553
+ * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
+ * in network byte order, not in host byte order as are the IPv4 equivalents
+ */
+extern const struct in6_addr in6addr_any;
+#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
+extern const struct in6_addr in6addr_loopback;
+#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
+
struct sockaddr_in6 {
unsigned short int sin6_family; /* AF_INET6 */
__u16 sin6_port; /* Transport layer port # */
diff -Naur linux-2.5.59/include/linux/socket.h linux-2.5.59-RFC2553/include/linux/socket.h
--- linux-2.5.59/include/linux/socket.h 2003-02-12 10:29:14.000000000 -0800
+++ linux-2.5.59-RFC2553/include/linux/socket.h 2003-02-12 10:09:09.000000000 -0800
@@ -25,6 +25,34 @@
};
/*
+ * Desired design of maximum size and alignment
+ */
+#define _SS_MAXSIZE 128 /* Implementation specific max size */
+#define _SS_ALIGNSIZE (sizeof (int64_t))
+ /* Implementation specific desired alignment */
+/*
+ * Definitions used for sockaddr_storage structure paddings design.
+ */
+#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof (sa_family_t))
+#define _SS_PAD2SIZE (_SS_MAXSIZE - (sizeof (sa_family_t) + \
+ _SS_PAD1SIZE + _SS_ALIGNSIZE))
+
+struct sockaddr_storage {
+ sa_family_t ss_family; /* address family */
+ /* Following fields are implementation specific */
+ char __ss_pad1[_SS_PAD1SIZE];
+ /* 6 byte pad, this is to make implementation */
+ /* specific pad up to alignment field that */
+ /* follows explicit in the data structure */
+ int64_t __ss_align; /* field to force desired structure */
+ /* storage alignment */
+ char __ss_pad2[_SS_PAD2SIZE];
+ /* 112 byte pad to achieve desired size, */
+ /* _SS_MAXSIZE value minus size of ss_family */
+ /* __ss_pad1, __ss_align fields is 112 */
+};
+
+/*
* As we do 4.4BSD message passing we use a 4.4BSD message passing
* system, not 4.3. Thus msg_accrights(len) are now missing. They
* belong in an obscure libc emulation or the bin.
diff -Naur linux-2.5.59/include/net/sctp/structs.h linux-2.5.59-RFC2553/include/net/sctp/structs.h
--- linux-2.5.59/include/net/sctp/structs.h 2003-02-12 10:29:14.000000000 -0800
+++ linux-2.5.59-RFC2553/include/net/sctp/structs.h 2003-02-12 08:35:07.000000000 -0800
@@ -61,38 +61,6 @@
#include <linux/workqueue.h> /* We need tq_struct. */
#include <linux/sctp.h> /* We need sctp* header structs. */
-/*
- * This is (almost) a direct quote from RFC 2553.
- */
-
-/*
- * Desired design of maximum size and alignment
- */
-#define _SS_MAXSIZE 128 /* Implementation specific max size */
-#define _SS_ALIGNSIZE (sizeof (__s64))
- /* Implementation specific desired alignment */
-/*
- * Definitions used for sockaddr_storage structure paddings design.
- */
-#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof (sa_family_t))
-#define _SS_PAD2SIZE (_SS_MAXSIZE - (sizeof (sa_family_t)+ \
- _SS_PAD1SIZE + _SS_ALIGNSIZE))
-
-struct sockaddr_storage {
- sa_family_t __ss_family; /* address family */
- /* Following fields are implementation specific */
- char __ss_pad1[_SS_PAD1SIZE];
- /* 6 byte pad, to make implementation */
- /* specific pad up to alignment field that */
- /* follows explicit in the data structure */
- __s64 __ss_align; /* field to force desired structure */
- /* storage alignment */
- char __ss_pad2[_SS_PAD2SIZE];
- /* 112 byte pad to achieve desired size, */
- /* _SS_MAXSIZE value minus size of ss_family */
- /* __ss_pad1, __ss_align fields is 112 */
-};
-
/* A convenience structure for handling sockaddr structures.
* We should wean ourselves off this.
*/
diff -Naur linux-2.5.59/net/ipv6/addrconf.c linux-2.5.59-RFC2553/net/ipv6/addrconf.c
--- linux-2.5.59/net/ipv6/addrconf.c 2003-01-16 18:22:44.000000000 -0800
+++ linux-2.5.59-RFC2553/net/ipv6/addrconf.c 2003-02-12 13:55:03.000000000 -0800
@@ -136,6 +136,10 @@
MAX_RTR_SOLICITATION_DELAY, /* rtr solicit delay */
};
+/* IPv6 Wildcard Address and Loopback Address defined by RFC2553 */
+const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
+
int ipv6_addr_type(struct in6_addr *addr)
{
u32 st;
-
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