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[NETNS][IPV6]: inet6_addr - ipv6_get_ifaddr namespace aware 

The inet6_addr_lst is browsed taking into account the network
namespace specified as parameter. If an address does not belong
to the specified namespace, it is ignored.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Lezcano 2008-01-10 22:44:09 -08:00 committed by David S. Miller
parent 06bfe655e7
commit 1cab3da6be
4 changed files with 19 additions and 12 deletions
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8
include/net/addrconf.h
View File

@ -67,9 +67,11 @@ extern int ipv6_chk_addr(struct net *net,
#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
extern int ipv6_chk_home_addr(struct in6_addr *addr);
#endif
extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
struct net_device *dev,
int strict);
extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
struct in6_addr *addr,
struct net_device *dev,
int strict);
extern int ipv6_get_saddr(struct dst_entry *dst,
struct in6_addr *daddr,
struct in6_addr *saddr);

11
net/ipv6/addrconf.c
View File

@ -1247,13 +1247,16 @@ int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
return ifp != NULL;
}
struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, struct net_device *dev, int strict)
struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, struct in6_addr *addr,
struct net_device *dev, int strict)
{
struct inet6_ifaddr * ifp;
u8 hash = ipv6_addr_hash(addr);
read_lock_bh(&addrconf_hash_lock);
for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
if (ifp->idev->dev->nd_net != net)
continue;
if (ipv6_addr_equal(&ifp->addr, addr)) {
if (dev == NULL || ifp->idev->dev == dev ||
!(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {
@ -1739,7 +1742,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len)
ok:
ifp = ipv6_get_ifaddr(&addr, dev, 1);
ifp = ipv6_get_ifaddr(&init_net, &addr, dev, 1);
if (ifp == NULL && valid_lft) {
int max_addresses = in6_dev->cnf.max_addresses;
@ -3135,7 +3138,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
/* We ignore other flags so far. */
ifa_flags = ifm->ifa_flags & (IFA_F_NODAD | IFA_F_HOMEADDRESS);
ifa = ipv6_get_ifaddr(pfx, dev, 1);
ifa = ipv6_get_ifaddr(net, pfx, dev, 1);
if (ifa == NULL) {
/*
* It would be best to check for !NLM_F_CREATE here but
@ -3442,7 +3445,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
if (ifm->ifa_index)
dev = __dev_get_by_index(&init_net, ifm->ifa_index);
if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL) {
if ((ifa = ipv6_get_ifaddr(net, addr, dev, 1)) == NULL) {
err = -EADDRNOTAVAIL;
goto errout;
}

3
net/ipv6/ip6_output.c
View File

@ -936,7 +936,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
struct flowi fl_gw;
int redirect;
ifp = ipv6_get_ifaddr(&fl->fl6_src, (*dst)->dev, 1);
ifp = ipv6_get_ifaddr(&init_net, &fl->fl6_src,
(*dst)->dev, 1);
redirect = (ifp && ifp->flags & IFA_F_OPTIMISTIC);
if (ifp)

9
net/ipv6/ndisc.c
View File

@ -556,7 +556,7 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
};
/* for anycast or proxy, solicited_addr != src_addr */
ifp = ipv6_get_ifaddr(solicited_addr, dev, 1);
ifp = ipv6_get_ifaddr(&init_net, solicited_addr, dev, 1);
if (ifp) {
src_addr = solicited_addr;
if (ifp->flags & IFA_F_OPTIMISTIC)
@ -616,7 +616,8 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
* suppress the inclusion of the sllao.
*/
if (send_sllao) {
struct inet6_ifaddr *ifp = ipv6_get_ifaddr(saddr, dev, 1);
struct inet6_ifaddr *ifp = ipv6_get_ifaddr(&init_net, saddr,
dev, 1);
if (ifp) {
if (ifp->flags & IFA_F_OPTIMISTIC) {
send_sllao = 0;
@ -741,7 +742,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
inc = ipv6_addr_is_multicast(daddr);
if ((ifp = ipv6_get_ifaddr(&msg->target, dev, 1)) != NULL) {
if ((ifp = ipv6_get_ifaddr(&init_net, &msg->target, dev, 1)) != NULL) {
if (ifp->flags & (IFA_F_TENTATIVE|IFA_F_OPTIMISTIC)) {
if (dad) {
@ -899,7 +900,7 @@ static void ndisc_recv_na(struct sk_buff *skb)
return;
}
}
if ((ifp = ipv6_get_ifaddr(&msg->target, dev, 1))) {
if ((ifp = ipv6_get_ifaddr(&init_net, &msg->target, dev, 1))) {
if (ifp->flags & IFA_F_TENTATIVE) {
addrconf_dad_failure(ifp);
return;