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IPv6: data structure changes for new socket options

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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>
This commit is contained in:
Brian Haley 2010-04-23 11:26:07 +00:00 • committed by David S. Miller
parent 3a73702863
commit 793b147316
3 changed files with 57 additions and 4 deletions
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13
include/linux/ipv6.h
View file

@ -21,6 +21,10 @@ struct in6_pktinfo {
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 @@ struct ipv6_pinfo {
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;