d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add in6_prepare_ifra() function to ease preparing in-kernel IPv6

Browse Source 
address requests.

MFC after:	2 weeks
This commit is contained in:
Alexander V. Chernikov 2014-01-18 20:32:59 +00:00
parent 86fa24710e
commit 9080e7d023
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=260860
4 changed files with 30 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
sys/netinet6/in6.c
View File

@ -1036,6 +1036,27 @@ in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
return (error);
}
/*
* Fill in basic IPv6 address request info
*/
void
in6_prepare_ifra(struct in6_aliasreq *ifra, const struct in6_addr *addr,
const struct in6_addr *mask)
{
memset(ifra, 0, sizeof(struct in6_aliasreq));
ifra->ifra_addr.sin6_family = AF_INET6;
ifra->ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
if (addr != NULL)
ifra->ifra_addr.sin6_addr = *addr;
ifra->ifra_prefixmask.sin6_family = AF_INET6;
ifra->ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
if (mask != NULL)
ifra->ifra_prefixmask.sin6_addr = *mask;
}
static int
in6_validate_ifra(struct ifnet *ifp, struct in6_aliasreq *ifra,
struct in6_ifaddr *ia, int flags)

29
sys/netinet6/in6_ifattach.c
View File

@ -460,16 +460,8 @@ in6_ifattach_linklocal(struct ifnet *ifp, struct ifnet *altifp)
/*
* configure link-local address.
*/
bzero(&ifra, sizeof(ifra));
in6_prepare_ifra(&ifra, NULL, &in6mask64);
/*
* in6_update_ifa() does not use ifra_name, but we accurately set it
* for safety.
*/
strncpy(ifra.ifra_name, if_name(ifp), sizeof(ifra.ifra_name));
ifra.ifra_addr.sin6_family = AF_INET6;
ifra.ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
ifra.ifra_addr.sin6_addr.s6_addr32[0] = htonl(0xfe800000);
ifra.ifra_addr.sin6_addr.s6_addr32[1] = 0;
if ((ifp->if_flags & IFF_LOOPBACK) != 0) {
@ -485,9 +477,6 @@ in6_ifattach_linklocal(struct ifnet *ifp, struct ifnet *altifp)
if (in6_setscope(&ifra.ifra_addr.sin6_addr, ifp, NULL))
return (-1);
ifra.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
ifra.ifra_prefixmask.sin6_family = AF_INET6;
ifra.ifra_prefixmask.sin6_addr = in6mask64;
/* link-local addresses should NEVER expire. */
ifra.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
ifra.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
@ -565,17 +554,7 @@ in6_ifattach_loopback(struct ifnet *ifp)
struct in6_aliasreq ifra;
int error;
bzero(&ifra, sizeof(ifra));
/*
* in6_update_ifa() does not use ifra_name, but we accurately set it
* for safety.
*/
strncpy(ifra.ifra_name, if_name(ifp), sizeof(ifra.ifra_name));
ifra.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
ifra.ifra_prefixmask.sin6_family = AF_INET6;
ifra.ifra_prefixmask.sin6_addr = in6mask128;
in6_prepare_ifra(&ifra, &in6addr_loopback, &in6mask128);
/*
* Always initialize ia_dstaddr (= broadcast address) to loopback
@ -585,10 +564,6 @@ in6_ifattach_loopback(struct ifnet *ifp)
ifra.ifra_dstaddr.sin6_family = AF_INET6;
ifra.ifra_dstaddr.sin6_addr = in6addr_loopback;
ifra.ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
ifra.ifra_addr.sin6_family = AF_INET6;
ifra.ifra_addr.sin6_addr = in6addr_loopback;
/* the loopback address should NEVER expire. */
ifra.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
ifra.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;

2
sys/netinet6/in6_var.h
View File

@ -799,6 +799,8 @@ int in6_control(struct socket *, u_long, caddr_t, struct ifnet *,
struct thread *);
int in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
struct in6_ifaddr *, int);
void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *,
const struct in6_addr *);
void in6_purgeaddr(struct ifaddr *);
int in6if_do_dad(struct ifnet *);
void in6_purgeif(struct ifnet *);

27
sys/netinet6/nd6_rtr.c
View File

@ -1829,19 +1829,9 @@ in6_ifadd(struct nd_prefixctl *pr, int mcast)
}
/* make ifaddr */
in6_prepare_ifra(&ifra, &pr->ndpr_prefix.sin6_addr, &mask);
bzero(&ifra, sizeof(ifra));
/*
* in6_update_ifa() does not use ifra_name, but we accurately set it
* for safety.
*/
strncpy(ifra.ifra_name, if_name(ifp), sizeof(ifra.ifra_name));
ifra.ifra_addr.sin6_family = AF_INET6;
ifra.ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
/* prefix */
ifra.ifra_addr.sin6_addr = pr->ndpr_prefix.sin6_addr;
IN6_MASK_ADDR(&ifra.ifra_addr.sin6_addr, &mask);
/* interface ID */
ifra.ifra_addr.sin6_addr.s6_addr32[0] |=
(ib->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]);
@ -1853,12 +1843,6 @@ in6_ifadd(struct nd_prefixctl *pr, int mcast)
(ib->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]);
ifa_free(ifa);
/* new prefix mask. */
ifra.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
ifra.ifra_prefixmask.sin6_family = AF_INET6;
bcopy(&mask, &ifra.ifra_prefixmask.sin6_addr,
sizeof(ifra.ifra_prefixmask.sin6_addr));
/* lifetimes. */
ifra.ifra_lifetime.ia6t_vltime = pr->ndpr_vltime;
ifra.ifra_lifetime.ia6t_pltime = pr->ndpr_pltime;
@ -1923,11 +1907,10 @@ in6_tmpifadd(const struct in6_ifaddr *ia0, int forcegen, int delay)
u_int32_t randid[2];
time_t vltime0, pltime0;
bzero(&ifra, sizeof(ifra));
strncpy(ifra.ifra_name, if_name(ifp), sizeof(ifra.ifra_name));
ifra.ifra_addr = ia0->ia_addr;
/* copy prefix mask */
ifra.ifra_prefixmask = ia0->ia_prefixmask;
in6_prepare_ifra(&ifra, &ia0->ia_addr.sin6_addr,
&ia0->ia_prefixmask.sin6_addr);
ifra.ifra_addr = ia0->ia_addr; /* XXX: do we need this ? */
/* clear the old IFID */
IN6_MASK_ADDR(&ifra.ifra_addr.sin6_addr,
&ifra.ifra_prefixmask.sin6_addr);