summaryrefslogtreecommitdiff
path: root/inet
diff options
context:
space:
mode:
Diffstat (limited to 'inet')
-rw-r--r--inet/Makefile4
-rw-r--r--inet/Versions6
-rw-r--r--inet/inet6_opt.c278
-rw-r--r--inet/inet6_rth.c192
-rw-r--r--inet/netinet/icmp6.h30
-rw-r--r--inet/netinet/in.h61
-rw-r--r--inet/netinet/ip6.h21
7 files changed, 555 insertions, 37 deletions
diff --git a/inet/Makefile b/inet/Makefile
index 0fdf9e33e4..075716fbeb 100644
--- a/inet/Makefile
+++ b/inet/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2002, 2003, 2004 Free Software Foundation, Inc.
+# Copyright (C) 1991-2002, 2003, 2004, 2006 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -47,7 +47,7 @@ routines := htonl htons \
getaliasent_r getaliasent getaliasname getaliasname_r \
in6_addr getnameinfo if_index ifaddrs inet6_option \
getipv4sourcefilter setipv4sourcefilter \
- getsourcefilter setsourcefilter
+ getsourcefilter setsourcefilter inet6_opt inet6_rth
aux := check_pf ifreq
diff --git a/inet/Versions b/inet/Versions
index 2b7ec901ff..06507199a9 100644
--- a/inet/Versions
+++ b/inet/Versions
@@ -78,6 +78,12 @@ libc {
getipv4sourcefilter; setipv4sourcefilter;
getsourcefilter; setsourcefilter;
}
+ GLIBC_2.5 {
+ inet6_opt_init; inet6_opt_append; inet6_opt_finish; inet6_opt_set_val;
+ inet6_opt_next; inet6_opt_find; inet6_opt_get_val;
+ inet6_rth_space; inet6_rth_init; inet6_rth_add; inet6_rth_reverse;
+ inet6_rth_segments; inet6_rth_getaddr;
+ }
GLIBC_PRIVATE {
# functions used in other libraries
__internal_endnetgrent; __internal_getnetgrent_r;
diff --git a/inet/inet6_opt.c b/inet/inet6_opt.c
new file mode 100644
index 0000000000..bddb85182b
--- /dev/null
+++ b/inet/inet6_opt.c
@@ -0,0 +1,278 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <string.h>
+#include <netinet/in.h>
+#include <netinet/ip6.h>
+
+
+/* RFC 3542, 10.1
+
+ This function returns the number of bytes needed for the empty
+ extension header i.e., without any options. If EXTBUF is not NULL it
+ also initializes the extension header to have the correct length
+ field. In that case if the EXTLEN value is not a positive (i.e.,
+ non-zero) multiple of 8 the function fails and returns -1. */
+int
+inet6_opt_init (void *extbuf, socklen_t extlen)
+{
+ if (extbuf != NULL)
+ {
+ if (extlen <= 0 || (extlen % 8) != 0)
+ return -1;
+
+ /* Fill in the length in units of 8 octets. */
+ struct ip6_hbh *extp = (struct ip6_hbh *) extbuf;
+ extp->ip6h_len = extlen / 8;
+ }
+
+ return sizeof (struct ip6_hbh);
+}
+
+
+static void
+add_padding (uint8_t *extbuf, int offset, int npad)
+{
+ if (npad == 1)
+ extbuf[offset] = IP6OPT_PAD1;
+ else
+ {
+ struct ip6_opt *pad_opt = (struct ip6_opt *) (extbuf + offset);
+
+ pad_opt->ip6o_type = IP6OPT_PADN;
+ pad_opt->ip6o_len = npad - sizeof (struct ip6_opt);
+ /* Clear the memory used by the padding. */
+ memset (pad_opt + 1, '\0', pad_opt->ip6o_len);
+ }
+}
+
+
+
+/* RFC 3542, 10.2
+
+ This function returns the updated total length taking into account
+ adding an option with length 'len' and alignment 'align'. If
+ EXTBUF is not NULL then, in addition to returning the length, the
+ function inserts any needed pad option, initializes the option
+ (setting the type and length fields) and returns a pointer to the
+ location for the option content in databufp. If the option does
+ not fit in the extension header buffer the function returns -1. */
+int
+inet6_opt_append (void *extbuf, socklen_t extlen, int offset, uint8_t type,
+ socklen_t len, uint8_t align, void **databufp)
+{
+ /* Check minimum offset. */
+ if (offset < sizeof (struct ip6_hbh))
+ return -1;
+
+ /* One cannot add padding options. */
+ if (type == IP6OPT_PAD1 || type == IP6OPT_PADN)
+ return -1;
+
+ /* The option length must fit in one octet. */
+ if (len > 255)
+ return -1;
+
+ /* The alignment can only by 1, 2, 4, or 8 and must not exceed the
+ option length. */
+ if (align == 0 || align > 8 || (align & (align - 1)) != 0 || align > len)
+ return -1;
+
+ /* Determine the needed padding for alignment. Following the
+ current content of the buffer we have the is the IPv6 option type
+ and length, followed immediately by the data. The data has the
+ alignment constraints. Therefore padding must be inserted in the
+ form of padding options before the new option. */
+ int data_offset = offset + sizeof (struct ip6_opt);
+ int npad = (align - data_offset % align) & (align - 1);
+
+ /* Now we can check whether the buffer is large enough. */
+ if (data_offset + npad + len > extlen)
+ return -1;
+
+ if (npad != 0)
+ {
+ if (extbuf != NULL)
+ add_padding (extbuf, offset, npad);
+
+ offset += npad;
+ }
+
+ /* Now prepare the option itself. */
+ if (extbuf != NULL)
+ {
+ struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
+
+ opt->ip6o_type = type;
+ opt->ip6o_len = len;
+
+ *databufp = opt + 1;
+ }
+
+ return offset + sizeof (struct ip6_opt) + len;
+}
+
+
+/* RFC 3542, 10.3
+
+ This function returns the updated total length taking into account
+ the final padding of the extension header to make it a multiple of
+ 8 bytes. If EXTBUF is not NULL the function also initializes the
+ option by inserting a Pad1 or PadN option of the proper length. */
+int
+inet6_opt_finish (void *extbuf, socklen_t extlen, int offset)
+{
+ /* Check minimum offset. */
+ if (offset < sizeof (struct ip6_hbh))
+ return -1;
+
+ /* Required padding at the end. */
+ int npad = (8 - (offset & 7)) & 7;
+
+ /* Make sure the buffer is large enough. */
+ if (offset + npad > extlen)
+ return -1;
+
+ if (extbuf != NULL)
+ add_padding (extbuf, offset, npad);
+
+ return offset + npad;
+}
+
+
+/* RFC 3542, 10.4
+
+ This function inserts data items of various sizes in the data
+ portion of the option. VAL should point to the data to be
+ inserted. OFFSET specifies where in the data portion of the option
+ the value should be inserted; the first byte after the option type
+ and length is accessed by specifying an offset of zero. */
+int
+inet6_opt_set_val (void *databuf, int offset, void *val, socklen_t vallen)
+{
+ memcpy ((uint8_t *) databuf + offset, val, vallen);
+
+ return offset + vallen;
+}
+
+
+/* RFC 3542, 10.5
+
+ This function parses received option extension headers returning
+ the next option. EXTBUF and EXTLEN specifies the extension header.
+ OFFSET should either be zero (for the first option) or the length
+ returned by a previous call to 'inet6_opt_next' or
+ 'inet6_opt_find'. It specifies the position where to continue
+ scanning the extension buffer. */
+int
+inet6_opt_next (void *extbuf, socklen_t extlen, int offset, uint8_t *typep,
+ socklen_t *lenp, void **databufp)
+{
+ if (offset == 0)
+ offset = sizeof (struct ip6_hbh);
+ else if (offset < sizeof (struct ip6_hbh))
+ return -1;
+
+ while (offset < extlen)
+ {
+ struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
+
+ if (opt->ip6o_type == IP6OPT_PAD1)
+ /* Single byte padding. */
+ ++offset;
+ else if (opt->ip6o_type == IP6OPT_PADN)
+ offset += sizeof (struct ip6_opt) + opt->ip6o_len;
+ else
+ {
+ /* Check whether the option is valid. */
+ offset += sizeof (struct ip6_opt) + opt->ip6o_len;
+ if (offset > extlen)
+ return -1;
+
+ *typep = opt->ip6o_type;
+ *lenp = opt->ip6o_len;
+ *databufp = opt + 1;
+ return offset;
+ }
+ }
+
+ return -1;
+}
+
+
+/* RFC 3542, 10.6
+
+ This function is similar to the previously described
+ 'inet6_opt_next' function, except this function lets the caller
+ specify the option type to be searched for, instead of always
+ returning the next option in the extension header. */
+int
+inet6_opt_find (void *extbuf, socklen_t extlen, int offset, uint8_t type,
+ socklen_t *lenp, void **databufp)
+{
+ if (offset == 0)
+ offset = sizeof (struct ip6_hbh);
+ else if (offset < sizeof (struct ip6_hbh))
+ return -1;
+
+ while (offset < extlen)
+ {
+ struct ip6_opt *opt = (struct ip6_opt *) ((uint8_t *) extbuf + offset);
+
+ if (opt->ip6o_type == IP6OPT_PAD1)
+ {
+ /* Single byte padding. */
+ ++offset;
+ if (type == IP6OPT_PAD1)
+ {
+ *lenp = 0;
+ *databufp = (uint8_t *) extbuf + offset;
+ return offset;
+ }
+ }
+ else if (opt->ip6o_type != type)
+ offset += sizeof (struct ip6_opt) + opt->ip6o_len;
+ else
+ {
+ /* Check whether the option is valid. */
+ offset += sizeof (struct ip6_opt) + opt->ip6o_len;
+ if (offset > extlen)
+ return -1;
+
+ *lenp = opt->ip6o_len;
+ *databufp = opt + 1;
+ return offset;
+ }
+ }
+
+ return -1;
+}
+
+
+/* RFC 3542, 10.7
+
+ This function extracts data items of various sizes in the data
+ portion of the option. */
+int
+inet6_opt_get_val (void *databuf, int offset, void *val, socklen_t vallen)
+{
+ memcpy (val, (uint8_t *) databuf + offset, vallen);
+
+ return offset + vallen;
+}
diff --git a/inet/inet6_rth.c b/inet/inet6_rth.c
new file mode 100644
index 0000000000..15f8240909
--- /dev/null
+++ b/inet/inet6_rth.c
@@ -0,0 +1,192 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <string.h>
+#include <netinet/in.h>
+#include <netinet/ip6.h>
+
+
+/* RFC 3542, 7.1
+
+ This function returns the number of bytes required to hold a
+ Routing header of the specified type containing the specified
+ number of segments (addresses). For an IPv6 Type 0 Routing header,
+ the number of segments must be between 0 and 127, inclusive. */
+socklen_t
+inet6_rth_space (int type, int segments)
+{
+ switch (type)
+ {
+ case IPV6_RTHDR_TYPE_0:
+ if (segments < 0 || segments > 127)
+ return 0;
+
+ return sizeof (struct ip6_rthdr0) + segments * sizeof (struct in6_addr);
+ }
+
+ return 0;
+}
+
+
+/* RFC 3542, 7.2
+
+ This function initializes the buffer pointed to by BP to contain a
+ Routing header of the specified type and sets ip6r_len based on the
+ segments parameter. */
+void *
+inet6_rth_init (void *bp, socklen_t bp_len, int type, int segments)
+{
+ struct ip6_rthdr *rthdr = (struct ip6_rthdr *) bp;
+
+ switch (type)
+ {
+ case IPV6_RTHDR_TYPE_0:
+ /* Make sure the parameters are valid and the buffer is large enough. */
+ if (segments < 0 || segments > 127)
+ break;
+
+ socklen_t len = (sizeof (struct ip6_rthdr0)
+ + segments * sizeof (struct in6_addr));
+ if (len > bp_len)
+ break;
+
+ /* Some implementations seem to initialize the whole memory area. */
+ memset (bp, '\0', len);
+
+ /* Length in units of 8 octets. */
+ rthdr->ip6r_len = segments * sizeof (struct in6_addr) / 8;
+ rthdr->ip6r_type = IPV6_RTHDR_TYPE_0;
+ return bp;
+ }
+
+ return NULL;
+}
+
+
+/* RFC 3542, 7.3
+
+ This function adds the IPv6 address pointed to by addr to the end of
+ the Routing header being constructed. */
+int
+inet6_rth_add (void *bp, const struct in6_addr *addr)
+{
+ struct ip6_rthdr *rthdr = (struct ip6_rthdr *) bp;
+
+ switch (rthdr->ip6r_type)
+ {
+ struct ip6_rthdr0 *rthdr0;
+ case IPV6_RTHDR_TYPE_0:
+ rthdr0 = (struct ip6_rthdr0 *) rthdr;
+
+ memcpy (&rthdr0->ip6r0_addr[rthdr0->ip6r0_segleft++],
+ addr, sizeof (struct in6_addr));
+
+ return 0;
+ }
+
+ return -1;
+}
+
+
+/* RFC 3542, 7.4
+
+ This function takes a Routing header extension header (pointed to by
+ the first argument) and writes a new Routing header that sends
+ datagrams along the reverse of that route. The function reverses the
+ order of the addresses and sets the segleft member in the new Routing
+ header to the number of segments. */
+int
+inet6_rth_reverse (const void *in, void *out)
+{
+ struct ip6_rthdr *in_rthdr = (struct ip6_rthdr *) in;
+
+ switch (in_rthdr->ip6r_type)
+ {
+ struct ip6_rthdr0 *in_rthdr0;
+ struct ip6_rthdr0 *out_rthdr0;
+ case IPV6_RTHDR_TYPE_0:
+ in_rthdr0 = (struct ip6_rthdr0 *) in;
+ out_rthdr0 = (struct ip6_rthdr0 *) out;
+
+ /* Copy header, not the addresses. The memory regions can overlap. */
+ memmove (out_rthdr0, in_rthdr0, sizeof (struct ip6_rthdr0));
+
+ int total = in_rthdr0->ip6r0_segleft * 8 / sizeof (struct in6_addr);
+ for (int i = 0; i < total / 2; ++i)
+ {
+ /* Remember, IN_RTHDR0 and OUT_RTHDR0 might overlap. */
+ struct in6_addr temp = in_rthdr0->ip6r0_addr[i];
+ out_rthdr0->ip6r0_addr[i] = in_rthdr0->ip6r0_addr[total - 1 - i];
+ out_rthdr0->ip6r0_addr[total - 1 - i] = temp;
+ }
+ if (total % 2 != 0 && in != out)
+ out_rthdr0->ip6r0_addr[total / 2] = in_rthdr0->ip6r0_addr[total / 2];
+
+ return 0;
+ }
+
+ return -1;
+}
+
+
+/* RFC 3542, 7.5
+
+ This function returns the number of segments (addresses) contained in
+ the Routing header described by BP. */
+int
+inet6_rth_segments (const void *bp)
+{
+ struct ip6_rthdr *rthdr = (struct ip6_rthdr *) bp;
+
+ switch (rthdr->ip6r_type)
+ {
+ case IPV6_RTHDR_TYPE_0:
+
+ return rthdr->ip6r_len * 8 / sizeof (struct in6_addr);
+ }
+
+ return -1;
+}
+
+
+/* RFC 3542, 7.6
+
+ This function returns a pointer to the IPv6 address specified by
+ index (which must have a value between 0 and one less than the
+ value returned by 'inet6_rth_segments') in the Routing header
+ described by BP. */
+struct in6_addr *
+inet6_rth_getaddr (const void *bp, int index)
+{
+ struct ip6_rthdr *rthdr = (struct ip6_rthdr *) bp;
+
+ switch (rthdr->ip6r_type)
+ {
+ struct ip6_rthdr0 *rthdr0;
+ case IPV6_RTHDR_TYPE_0:
+ rthdr0 = (struct ip6_rthdr0 *) rthdr;
+
+ if (index >= rthdr0->ip6r0_len * 8 / sizeof (struct in6_addr))
+ break;
+
+ return &rthdr0->ip6r0_addr[index];
+ }
+
+ return NULL;
+}
diff --git a/inet/netinet/icmp6.h b/inet/netinet/icmp6.h
index c5138a39c9..0cb1aa6a6c 100644
--- a/inet/netinet/icmp6.h
+++ b/inet/netinet/icmp6.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,92,93,94,95,96,97,2000 Free Software Foundation, Inc.
+/* Copyright (C) 1991-1997,2000,2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -191,13 +191,13 @@ struct nd_opt_hdr /* Neighbor discovery option header */
/* followed by option specific data */
};
-#define ND_OPT_SOURCE_LINKADDR 1
-#define ND_OPT_TARGET_LINKADDR 2
-#define ND_OPT_PREFIX_INFORMATION 3
-#define ND_OPT_REDIRECTED_HEADER 4
-#define ND_OPT_MTU 5
-#define ND_OPT_RTR_ADV_INTERVAL 7
-#define ND_OPT_HOME_AGENT_INFO 8
+#define ND_OPT_SOURCE_LINKADDR 1
+#define ND_OPT_TARGET_LINKADDR 2
+#define ND_OPT_PREFIX_INFORMATION 3
+#define ND_OPT_REDIRECTED_HEADER 4
+#define ND_OPT_MTU 5
+#define ND_OPT_RTR_ADV_INTERVAL 7
+#define ND_OPT_HOME_AGENT_INFO 8
struct nd_opt_prefix_info /* prefix information */
{
@@ -211,9 +211,9 @@ struct nd_opt_prefix_info /* prefix information */
struct in6_addr nd_opt_pi_prefix;
};
-#define ND_OPT_PI_FLAG_ONLINK 0x80
-#define ND_OPT_PI_FLAG_AUTO 0x40
-#define ND_OPT_PI_FLAG_RADDR 0x20
+#define ND_OPT_PI_FLAG_ONLINK 0x80
+#define ND_OPT_PI_FLAG_AUTO 0x40
+#define ND_OPT_PI_FLAG_RADDR 0x20
struct nd_opt_rd_hdr /* redirected header */
{
@@ -300,11 +300,11 @@ struct rr_pco_use /* use prefix part */
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x10
#if BYTE_ORDER == BIG_ENDIAN
-# define ICMP6_RR_PCOUSE_DECRVLTIME 0x80000000
-# define ICMP6_RR_PCOUSE_DECRPLTIME 0x40000000
+# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
+# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
#elif BYTE_ORDER == LITTLE_ENDIAN
-# define ICMP6_RR_PCOUSE_DECRVLTIME 0x80
-# define ICMP6_RR_PCOUSE_DECRPLTIME 0x40
+# define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
+# define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
#endif
struct rr_result /* router renumbering result message */
diff --git a/inet/netinet/in.h b/inet/netinet/in.h
index 8898be3664..4fdc0fadf1 100644
--- a/inet/netinet/in.h
+++ b/inet/netinet/in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2001, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2001, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -455,25 +455,66 @@ extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
/* IPv6 packet information. */
struct in6_pktinfo
{
- struct in6_addr ipi6_addr; /* src/dst IPv6 address */
- unsigned int ipi6_ifindex; /* send/recv interface index */
+ struct in6_addr ipi6_addr; /* src/dst IPv6 address */
+ unsigned int ipi6_ifindex; /* send/recv interface index */
+ };
+
+/* IPv6 MTU information. */
+struct ip6_mtuinfo
+ {
+ struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
+ uint32_t ip6m_mtu; /* path MTU in host byte order */
};
#ifdef __USE_GNU
-/* Hop-by-Hop and Destination Options Processing. */
-extern int inet6_option_space (int __nbytes) __THROW;
+/* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
+extern int inet6_option_space (int __nbytes)
+ __THROW __attribute_deprecated__;
extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
- int __type) __THROW;
+ int __type) __THROW __attribute_deprecated__;
extern int inet6_option_append (struct cmsghdr *__cmsg,
__const uint8_t *__typep, int __multx,
- int __plusy) __THROW;
+ int __plusy) __THROW __attribute_deprecated__;
extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
- int __multx, int __plusy) __THROW;
+ int __multx, int __plusy)
+ __THROW __attribute_deprecated__;
extern int inet6_option_next (__const struct cmsghdr *__cmsg,
- uint8_t **__tptrp) __THROW;
+ uint8_t **__tptrp)
+ __THROW __attribute_deprecated__;
extern int inet6_option_find (__const struct cmsghdr *__cmsg,
- uint8_t **__tptrp, int __type) __THROW;
+ uint8_t **__tptrp, int __type)
+ __THROW __attribute_deprecated__;
+
+
+/* Hop-by-Hop and Destination Options Processing (RFC 3542). */
+extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
+extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
+ uint8_t __type, socklen_t __len, uint8_t __align,
+ void **__databufp) __THROW;
+extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
+ __THROW;
+extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
+ socklen_t __vallen) __THROW;
+extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
+ uint8_t *__typep, socklen_t *__lenp,
+ void **__databufp) __THROW;
+extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
+ uint8_t __type, socklen_t *__lenp,
+ void **__databufp) __THROW;
+extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
+ socklen_t __vallen) __THROW;
+
+
+/* Routing Header Option (RFC 3542). */
+extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
+extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
+ int __segments) __THROW;
+extern int inet6_rth_add (void *__bp, __const struct in6_addr *__addr) __THROW;
+extern int inet6_rth_reverse (__const void *__in, void *__out) __THROW;
+extern int inet6_rth_segments (__const void *__bp) __THROW;
+extern struct in6_addr *inet6_rth_getaddr (__const void *__bp, int __index)
+ __THROW;
/* Multicast source filter support. */
diff --git a/inet/netinet/ip6.h b/inet/netinet/ip6.h
index 0ad62f8980..bef2af2f5a 100644
--- a/inet/netinet/ip6.h
+++ b/inet/netinet/ip6.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-1997, 2001, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1991-1997, 2001, 2003, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -89,7 +89,8 @@ struct ip6_rthdr0
uint8_t ip6r0_segleft; /* segments left */
uint8_t ip6r0_reserved; /* reserved field */
uint8_t ip6r0_slmap[3]; /* strict/loose bit map */
- struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */
+ /* followed by up to 127 struct in6_addr */
+ struct in6_addr ip6r0_addr[0];
};
/* Fragment header */
@@ -101,14 +102,14 @@ struct ip6_frag
uint32_t ip6f_ident; /* identification */
};
-#if BYTE_ORDER == BIG_ENDIAN
-#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
-#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
-#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
+#if BYTE_ORDER == BIG_ENDIAN
+# define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
+# define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
+# define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
#else /* BYTE_ORDER == LITTLE_ENDIAN */
-#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
-#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
-#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
+# define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
+# define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
+# define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
#endif
/* IPv6 options */
@@ -175,7 +176,7 @@ struct ip6_opt_router
};
/* Router alert values (in network byte order) */
-#if BYTE_ORDER == BIG_ENDIAN
+#if BYTE_ORDER == BIG_ENDIAN
# define IP6_ALERT_MLD 0x0000
# define IP6_ALERT_RSVP 0x0001
# define IP6_ALERT_AN 0x0002