This patch adds a dev_addr_genid for IPv6. The goal is to use it, combined with
dev_base_seq to check if a change occurs during a netlink dump.
If a change is detected, the flag NLM_F_DUMP_INTR is set in the first message
after the dump was interrupted.
Note that only dump of unicast addresses is checked (multicast and anycast are
not checked).
Reported-by: Junwei Zhang <junwei.zhang@6wind.com>
Reported-by: Hongjun Li <hongjun.li@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
struct fib_rules_ops *mr6_rules_ops;
#endif
#endif
struct fib_rules_ops *mr6_rules_ops;
#endif
#endif
+ atomic_t dev_addr_genid;
};
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
};
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
idx = 0;
head = &net->dev_index_head[h];
rcu_read_lock();
idx = 0;
head = &net->dev_index_head[h];
rcu_read_lock();
+ cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
+ net->dev_base_seq;
hlist_for_each_entry_rcu(dev, head, index_hlist) {
if (idx < s_idx)
goto cont;
hlist_for_each_entry_rcu(dev, head, index_hlist) {
if (idx < s_idx)
goto cont;
rcu_read_unlock();
goto done;
}
rcu_read_unlock();
goto done;
}
+ nl_dump_check_consistent(cb, nlmsg_hdr(skb));
NLM_F_MULTI);
if (err <= 0)
break;
NLM_F_MULTI);
if (err <= 0)
break;
+ nl_dump_check_consistent(cb, nlmsg_hdr(skb));
s_ip_idx = ip_idx = cb->args[2];
rcu_read_lock();
s_ip_idx = ip_idx = cb->args[2];
rcu_read_lock();
+ cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
idx = 0;
head = &net->dev_index_head[h];
for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
idx = 0;
head = &net->dev_index_head[h];
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
+ struct net *net = dev_net(ifp->idev->dev);
+
inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
switch (event) {
inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
switch (event) {
dst_free(&ifp->rt->dst);
break;
}
dst_free(&ifp->rt->dst);
break;
}
+ atomic_inc(&net->ipv6.dev_addr_genid);
}
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
}
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)