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Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c121
1 files changed, 53 insertions, 68 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c979dd96d82a..7faa9d5e1503 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -476,6 +476,24 @@ out:
}
#ifdef CONFIG_IPV6_ROUTER_PREF
+struct __rt6_probe_work {
+ struct work_struct work;
+ struct in6_addr target;
+ struct net_device *dev;
+};
+
+static void rt6_probe_deferred(struct work_struct *w)
+{
+ struct in6_addr mcaddr;
+ struct __rt6_probe_work *work =
+ container_of(w, struct __rt6_probe_work, work);
+
+ addrconf_addr_solict_mult(&work->target, &mcaddr);
+ ndisc_send_ns(work->dev, NULL, &work->target, &mcaddr, NULL);
+ dev_put(work->dev);
+ kfree(w);
+}
+
static void rt6_probe(struct rt6_info *rt)
{
struct neighbour *neigh;
@@ -499,17 +517,23 @@ static void rt6_probe(struct rt6_info *rt)
if (!neigh ||
time_after(jiffies, neigh->updated + rt->rt6i_idev->cnf.rtr_probe_interval)) {
- struct in6_addr mcaddr;
- struct in6_addr *target;
+ struct __rt6_probe_work *work;
+
+ work = kmalloc(sizeof(*work), GFP_ATOMIC);
- if (neigh) {
+ if (neigh && work)
neigh->updated = jiffies;
+
+ if (neigh)
write_unlock(&neigh->lock);
- }
- target = (struct in6_addr *)&rt->rt6i_gateway;
- addrconf_addr_solict_mult(target, &mcaddr);
- ndisc_send_ns(rt->dst.dev, NULL, target, &mcaddr, NULL);
+ if (work) {
+ INIT_WORK(&work->work, rt6_probe_deferred);
+ work->target = rt->rt6i_gateway;
+ dev_hold(rt->dst.dev);
+ work->dev = rt->dst.dev;
+ schedule_work(&work->work);
+ }
} else {
out:
write_unlock(&neigh->lock);
@@ -595,7 +619,7 @@ static struct rt6_info *find_match(struct rt6_info *rt, int oif, int strict,
goto out;
m = rt6_score_route(rt, oif, strict);
- if (m == RT6_NUD_FAIL_SOFT && !IS_ENABLED(CONFIG_IPV6_ROUTER_PREF)) {
+ if (m == RT6_NUD_FAIL_SOFT) {
match_do_rr = true;
m = 0; /* lowest valid score */
} else if (m < 0) {
@@ -707,8 +731,11 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
prefix = &prefix_buf;
}
- rt = rt6_get_route_info(net, prefix, rinfo->prefix_len, gwaddr,
- dev->ifindex);
+ if (rinfo->prefix_len == 0)
+ rt = rt6_get_dflt_router(gwaddr, dev);
+ else
+ rt = rt6_get_route_info(net, prefix, rinfo->prefix_len,
+ gwaddr, dev->ifindex);
if (rt && !lifetime) {
ip6_del_rt(rt);
@@ -847,12 +874,9 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort,
rt = ip6_rt_copy(ort, daddr);
if (rt) {
- if (!(rt->rt6i_flags & RTF_GATEWAY)) {
- if (ort->rt6i_dst.plen != 128 &&
- ipv6_addr_equal(&ort->rt6i_dst.addr, daddr))
- rt->rt6i_flags |= RTF_ANYCAST;
- rt->rt6i_gateway = *daddr;
- }
+ if (ort->rt6i_dst.plen != 128 &&
+ ipv6_addr_equal(&ort->rt6i_dst.addr, daddr))
+ rt->rt6i_flags |= RTF_ANYCAST;
rt->rt6i_flags |= RTF_CACHE;
@@ -1064,10 +1088,13 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
if (rt->rt6i_genid != rt_genid_ipv6(dev_net(rt->dst.dev)))
return NULL;
- if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie))
- return dst;
+ if (!rt->rt6i_node || (rt->rt6i_node->fn_sernum != cookie))
+ return NULL;
- return NULL;
+ if (rt6_check_expired(rt))
+ return NULL;
+
+ return dst;
}
static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
@@ -1137,7 +1164,6 @@ void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu,
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = oif;
fl6.flowi6_mark = mark;
- fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
fl6.flowlabel = ip6_flowinfo(iph);
@@ -1236,7 +1262,6 @@ void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark)
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = oif;
fl6.flowi6_mark = mark;
- fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
fl6.flowlabel = ip6_flowinfo(iph);
@@ -1258,7 +1283,6 @@ void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = oif;
fl6.flowi6_mark = mark;
- fl6.flowi6_flags = 0;
fl6.daddr = msg->dest;
fl6.saddr = iph->daddr;
@@ -1338,6 +1362,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
rt->dst.flags |= DST_HOST;
rt->dst.output = ip6_output;
atomic_set(&rt->dst.__refcnt, 1);
+ rt->rt6i_gateway = fl6->daddr;
rt->rt6i_dst.addr = fl6->daddr;
rt->rt6i_dst.plen = 128;
rt->rt6i_idev = idev;
@@ -1873,7 +1898,10 @@ static struct rt6_info *ip6_rt_copy(struct rt6_info *ort,
in6_dev_hold(rt->rt6i_idev);
rt->dst.lastuse = jiffies;
- rt->rt6i_gateway = ort->rt6i_gateway;
+ if (ort->rt6i_flags & RTF_GATEWAY)
+ rt->rt6i_gateway = ort->rt6i_gateway;
+ else
+ rt->rt6i_gateway = *dest;
rt->rt6i_flags = ort->rt6i_flags;
if ((ort->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) ==
(RTF_DEFAULT | RTF_ADDRCONF))
@@ -2160,6 +2188,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
else
rt->rt6i_flags |= RTF_LOCAL;
+ rt->rt6i_gateway = *addr;
rt->rt6i_dst.addr = *addr;
rt->rt6i_dst.plen = 128;
rt->rt6i_table = fib6_get_table(net, RT6_TABLE_LOCAL);
@@ -2800,56 +2829,12 @@ static int ip6_route_dev_notify(struct notifier_block *this,
#ifdef CONFIG_PROC_FS
-struct rt6_proc_arg
-{
- char *buffer;
- int offset;
- int length;
- int skip;
- int len;
-};
-
-static int rt6_info_route(struct rt6_info *rt, void *p_arg)
-{
- struct seq_file *m = p_arg;
-
- seq_printf(m, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
-
-#ifdef CONFIG_IPV6_SUBTREES
- seq_printf(m, "%pi6 %02x ", &rt->rt6i_src.addr, rt->rt6i_src.plen);
-#else
- seq_puts(m, "00000000000000000000000000000000 00 ");
-#endif
- if (rt->rt6i_flags & RTF_GATEWAY) {
- seq_printf(m, "%pi6", &rt->rt6i_gateway);
- } else {
- seq_puts(m, "00000000000000000000000000000000");
- }
- seq_printf(m, " %08x %08x %08x %08x %8s\n",
- rt->rt6i_metric, atomic_read(&rt->dst.__refcnt),
- rt->dst.__use, rt->rt6i_flags,
- rt->dst.dev ? rt->dst.dev->name : "");
- return 0;
-}
-
-static int ipv6_route_show(struct seq_file *m, void *v)
-{
- struct net *net = (struct net *)m->private;
- fib6_clean_all_ro(net, rt6_info_route, 0, m);
- return 0;
-}
-
-static int ipv6_route_open(struct inode *inode, struct file *file)
-{
- return single_open_net(inode, file, ipv6_route_show);
-}
-
static const struct file_operations ipv6_route_proc_fops = {
.owner = THIS_MODULE,
.open = ipv6_route_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = single_release_net,
+ .release = seq_release_net,
};
static int rt6_stats_seq_show(struct seq_file *seq, void *v)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 23:53:02 +0100