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path: root/kernel/net/ipv6/ip6_gre.c
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Diffstat (limited to 'kernel/net/ipv6/ip6_gre.c')
-rw-r--r--kernel/net/ipv6/ip6_gre.c106
1 files changed, 61 insertions, 45 deletions
diff --git a/kernel/net/ipv6/ip6_gre.c b/kernel/net/ipv6/ip6_gre.c
index 69f4f689f..e5ea177d3 100644
--- a/kernel/net/ipv6/ip6_gre.c
+++ b/kernel/net/ipv6/ip6_gre.c
@@ -404,13 +404,13 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
struct ipv6_tlv_tnl_enc_lim *tel;
__u32 mtu;
case ICMPV6_DEST_UNREACH:
- net_warn_ratelimited("%s: Path to destination invalid or inactive!\n",
- t->parms.name);
+ net_dbg_ratelimited("%s: Path to destination invalid or inactive!\n",
+ t->parms.name);
break;
case ICMPV6_TIME_EXCEED:
if (code == ICMPV6_EXC_HOPLIMIT) {
- net_warn_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
- t->parms.name);
+ net_dbg_ratelimited("%s: Too small hop limit or routing loop in tunnel!\n",
+ t->parms.name);
}
break;
case ICMPV6_PARAMPROB:
@@ -421,12 +421,12 @@ static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (teli && teli == be32_to_cpu(info) - 2) {
tel = (struct ipv6_tlv_tnl_enc_lim *) &skb->data[teli];
if (tel->encap_limit == 0) {
- net_warn_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",
- t->parms.name);
+ net_dbg_ratelimited("%s: Too small encapsulation limit or routing loop in tunnel!\n",
+ t->parms.name);
}
} else {
- net_warn_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
- t->parms.name);
+ net_dbg_ratelimited("%s: Recipient unable to parse tunneled packet!\n",
+ t->parms.name);
}
break;
case ICMPV6_PKT_TOOBIG:
@@ -634,20 +634,20 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
}
if (!fl6->flowi6_mark)
- dst = ip6_tnl_dst_check(tunnel);
+ dst = ip6_tnl_dst_get(tunnel);
if (!dst) {
- ndst = ip6_route_output(net, NULL, fl6);
+ dst = ip6_route_output(net, NULL, fl6);
- if (ndst->error)
+ if (dst->error)
goto tx_err_link_failure;
- ndst = xfrm_lookup(net, ndst, flowi6_to_flowi(fl6), NULL, 0);
- if (IS_ERR(ndst)) {
- err = PTR_ERR(ndst);
- ndst = NULL;
+ dst = xfrm_lookup(net, dst, flowi6_to_flowi(fl6), NULL, 0);
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
+ dst = NULL;
goto tx_err_link_failure;
}
- dst = ndst;
+ ndst = dst;
}
tdev = dst->dev;
@@ -702,12 +702,9 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
skb = new_skb;
}
- if (fl6->flowi6_mark) {
- skb_dst_set(skb, dst);
- ndst = NULL;
- } else {
- skb_dst_set_noref(skb, dst);
- }
+ if (!fl6->flowi6_mark && ndst)
+ ip6_tnl_dst_set(tunnel, ndst);
+ skb_dst_set(skb, dst);
proto = NEXTHDR_GRE;
if (encap_limit >= 0) {
@@ -729,7 +726,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
*/
ipv6h = ipv6_hdr(skb);
ip6_flow_hdr(ipv6h, INET_ECN_encapsulate(0, dsfield),
- ip6_make_flowlabel(net, skb, fl6->flowlabel, false));
+ ip6_make_flowlabel(net, skb, fl6->flowlabel, true, fl6));
ipv6h->hop_limit = tunnel->parms.hop_limit;
ipv6h->nexthdr = proto;
ipv6h->saddr = fl6->saddr;
@@ -762,14 +759,12 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
skb_set_inner_protocol(skb, protocol);
ip6tunnel_xmit(NULL, skb, dev);
- if (ndst)
- ip6_tnl_dst_store(tunnel, ndst);
return 0;
tx_err_link_failure:
stats->tx_carrier_errors++;
dst_link_failure(skb);
tx_err_dst_release:
- dst_release(ndst);
+ dst_release(dst);
return err;
}
@@ -1183,7 +1178,8 @@ static int ip6gre_header(struct sk_buff *skb, struct net_device *dev,
ip6_flow_hdr(ipv6h, 0,
ip6_make_flowlabel(dev_net(dev), skb,
- t->fl.u.ip6.flowlabel, false));
+ t->fl.u.ip6.flowlabel, true,
+ &t->fl.u.ip6));
ipv6h->hop_limit = t->parms.hop_limit;
ipv6h->nexthdr = NEXTHDR_GRE;
ipv6h->saddr = t->parms.laddr;
@@ -1222,6 +1218,9 @@ static const struct net_device_ops ip6gre_netdev_ops = {
static void ip6gre_dev_free(struct net_device *dev)
{
+ struct ip6_tnl *t = netdev_priv(dev);
+
+ ip6_tnl_dst_destroy(t);
free_percpu(dev->tstats);
free_netdev(dev);
}
@@ -1244,9 +1243,10 @@ static void ip6gre_tunnel_setup(struct net_device *dev)
netif_keep_dst(dev);
}
-static int ip6gre_tunnel_init(struct net_device *dev)
+static int ip6gre_tunnel_init_common(struct net_device *dev)
{
struct ip6_tnl *tunnel;
+ int ret;
tunnel = netdev_priv(dev);
@@ -1254,16 +1254,37 @@ static int ip6gre_tunnel_init(struct net_device *dev)
tunnel->net = dev_net(dev);
strcpy(tunnel->parms.name, dev->name);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
+ if (!dev->tstats)
+ return -ENOMEM;
+
+ ret = ip6_tnl_dst_init(tunnel);
+ if (ret) {
+ free_percpu(dev->tstats);
+ dev->tstats = NULL;
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ip6gre_tunnel_init(struct net_device *dev)
+{
+ struct ip6_tnl *tunnel;
+ int ret;
+
+ ret = ip6gre_tunnel_init_common(dev);
+ if (ret)
+ return ret;
+
+ tunnel = netdev_priv(dev);
+
memcpy(dev->dev_addr, &tunnel->parms.laddr, sizeof(struct in6_addr));
memcpy(dev->broadcast, &tunnel->parms.raddr, sizeof(struct in6_addr));
if (ipv6_addr_any(&tunnel->parms.raddr))
dev->header_ops = &ip6gre_header_ops;
- dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
- if (!dev->tstats)
- return -ENOMEM;
-
return 0;
}
@@ -1459,19 +1480,16 @@ static void ip6gre_netlink_parms(struct nlattr *data[],
static int ip6gre_tap_init(struct net_device *dev)
{
struct ip6_tnl *tunnel;
+ int ret;
- tunnel = netdev_priv(dev);
+ ret = ip6gre_tunnel_init_common(dev);
+ if (ret)
+ return ret;
- tunnel->dev = dev;
- tunnel->net = dev_net(dev);
- strcpy(tunnel->parms.name, dev->name);
+ tunnel = netdev_priv(dev);
ip6gre_tnl_link_config(tunnel, 1);
- dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
- if (!dev->tstats)
- return -ENOMEM;
-
return 0;
}
@@ -1553,13 +1571,11 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
return -EEXIST;
} else {
t = nt;
-
- ip6gre_tunnel_unlink(ign, t);
- ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]);
- ip6gre_tunnel_link(ign, t);
- netdev_state_change(dev);
}
+ ip6gre_tunnel_unlink(ign, t);
+ ip6gre_tnl_change(t, &p, !tb[IFLA_MTU]);
+ ip6gre_tunnel_link(ign, t);
return 0;
}