IPv6: data structure changes for new socket options
Add underlying data structure changes and basic setsockopt()
and getsockopt() support for IPV6_RECVPATHMTU, IPV6_PATHMTU,
and IPV6_DONTFRAG. IPV6_PATHMTU is actually fully functional
at this point.
Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/in6.h b/include/linux/in6.h
index 9b90cb2..c4bf46f 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -221,10 +221,10 @@
#define IPV6_RTHDR 57
#define IPV6_RECVDSTOPTS 58
#define IPV6_DSTOPTS 59
-#if 0 /* not yet */
#define IPV6_RECVPATHMTU 60
#define IPV6_PATHMTU 61
#define IPV6_DONTFRAG 62
+#if 0 /* not yet */
#define IPV6_USE_MIN_MTU 63
#endif
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 1bdbebf..1976942 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -21,6 +21,10 @@
int ipi6_ifindex;
};
+struct ip6_mtuinfo {
+ struct sockaddr_in6 ip6m_addr;
+ __u32 ip6m_mtu;
+};
struct in6_ifreq {
struct in6_addr ifr6_addr;
@@ -334,22 +338,25 @@
dstopts:1,
odstopts:1,
rxflow:1,
- rxtclass:1;
+ rxtclass:1,
+ rxpmtu:1;
} bits;
__u16 all;
} rxopt;
/* sockopt flags */
- __u8 recverr:1,
+ __u16 recverr:1,
sndflow:1,
pmtudisc:2,
ipv6only:1,
- srcprefs:3; /* 001: prefer temporary address
+ srcprefs:3, /* 001: prefer temporary address
* 010: prefer public address
* 100: prefer care-of address
*/
+ dontfrag:1;
__u8 min_hopcount;
__u8 tclass;
+ __u8 padding;
__u32 dst_cookie;