Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Here is my initial pull request for the networking subsystem during
  this merge window:

   1) Support for ESN in AH (RFC 4302) from Fan Du.

   2) Add full kernel doc for ethtool command structures, from Ben
      Hutchings.

   3) Add BCM7xxx PHY driver, from Florian Fainelli.

   4) Export computed TCP rate information in netlink socket dumps, from
      Eric Dumazet.

   5) Allow IPSEC SA to be dumped partially using a filter, from Nicolas
      Dichtel.

   6) Convert many drivers to pci_enable_msix_range(), from Alexander
      Gordeev.

   7) Record SKB timestamps more efficiently, from Eric Dumazet.

   8) Switch to microsecond resolution for TCP round trip times, also
      from Eric Dumazet.

   9) Clean up and fix 6lowpan fragmentation handling by making use of
      the existing inet_frag api for it's implementation.

  10) Add TX grant mapping to xen-netback driver, from Zoltan Kiss.

  11) Auto size SKB lengths when composing netlink messages based upon
      past message sizes used, from Eric Dumazet.

  12) qdisc dumps can take a long time, add a cond_resched(), From Eric
      Dumazet.

  13) Sanitize netpoll core and drivers wrt.  SKB handling semantics.
      Get rid of never-used-in-tree netpoll RX handling.  From Eric W
      Biederman.

  14) Support inter-address-family and namespace changing in VTI tunnel
      driver(s).  From Steffen Klassert.

  15) Add Altera TSE driver, from Vince Bridgers.

  16) Optimizing csum_replace2() so that it doesn't adjust the checksum
      by checksumming the entire header, from Eric Dumazet.

  17) Expand BPF internal implementation for faster interpreting, more
      direct translations into JIT'd code, and much cleaner uses of BPF
      filtering in non-socket ocntexts.  From Daniel Borkmann and Alexei
      Starovoitov"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1976 commits)
  netpoll: Use skb_irq_freeable to make zap_completion_queue safe.
  net: Add a test to see if a skb is freeable in irq context
  qlcnic: Fix build failure due to undefined reference to `vxlan_get_rx_port'
  net: ptp: move PTP classifier in its own file
  net: sxgbe: make "core_ops" static
  net: sxgbe: fix logical vs bitwise operation
  net: sxgbe: sxgbe_mdio_register() frees the bus
  Call efx_set_channels() before efx->type->dimension_resources()
  xen-netback: disable rogue vif in kthread context
  net/mlx4: Set proper build dependancy with vxlan
  be2net: fix build dependency on VxLAN
  mac802154: make csma/cca parameters per-wpan
  mac802154: allow only one WPAN to be up at any given time
  net: filter: minor: fix kdoc in __sk_run_filter
  netlink: don't compare the nul-termination in nla_strcmp
  can: c_can: Avoid led toggling for every packet.
  can: c_can: Simplify TX interrupt cleanup
  can: c_can: Store dlc private
  can: c_can: Reduce register access
  can: c_can: Make the code readable
  ...

1 files changed, 11 insertions, 39 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index fba54a407bb2..5015c50a5ba7 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -149,7 +149,8 @@ static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)
 		unsigned long prev, new;
 
 		p = peer->metrics;
-		if (inet_metrics_new(peer))
+		if (inet_metrics_new(peer) ||
+		    (old & DST_METRICS_FORCE_OVERWRITE))
 			memcpy(p, old_p, sizeof(u32) * RTAX_MAX);
 
 		new = (unsigned long) p;
@@ -373,12 +374,6 @@ static bool rt6_check_expired(const struct rt6_info *rt)
 	return false;
 }
 
-static bool rt6_need_strict(const struct in6_addr *daddr)
-{
-	return ipv6_addr_type(daddr) &
-		(IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
-}
-
 /* Multipath route selection:
  *   Hash based function using packet header and flowlabel.
  * Adapted from fib_info_hashfn()
@@ -857,14 +852,15 @@ EXPORT_SYMBOL(rt6_lookup);
    be destroyed.
  */
 
-static int __ip6_ins_rt(struct rt6_info *rt, struct nl_info *info)
+static int __ip6_ins_rt(struct rt6_info *rt, struct nl_info *info,
+			struct nlattr *mx, int mx_len)
 {
 	int err;
 	struct fib6_table *table;
 
 	table = rt->rt6i_table;
 	write_lock_bh(&table->tb6_lock);
-	err = fib6_add(&table->tb6_root, rt, info);
+	err = fib6_add(&table->tb6_root, rt, info, mx, mx_len);
 	write_unlock_bh(&table->tb6_lock);
 
 	return err;
@@ -875,7 +871,7 @@ int ip6_ins_rt(struct rt6_info *rt)
 	struct nl_info info = {
 		.nl_net = dev_net(rt->dst.dev),
 	};
-	return __ip6_ins_rt(rt, &info);
+	return __ip6_ins_rt(rt, &info, NULL, 0);
 }
 
 static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort,
@@ -1543,17 +1539,11 @@ int ip6_route_add(struct fib6_config *cfg)
 
 	ipv6_addr_prefix(&rt->rt6i_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
 	rt->rt6i_dst.plen = cfg->fc_dst_len;
-	if (rt->rt6i_dst.plen == 128)
-	       rt->dst.flags |= DST_HOST;
-
-	if (!(rt->dst.flags & DST_HOST) && cfg->fc_mx) {
-		u32 *metrics = kzalloc(sizeof(u32) * RTAX_MAX, GFP_KERNEL);
-		if (!metrics) {
-			err = -ENOMEM;
-			goto out;
-		}
-		dst_init_metrics(&rt->dst, metrics, 0);
+	if (rt->rt6i_dst.plen == 128) {
+		rt->dst.flags |= DST_HOST;
+		dst_metrics_set_force_overwrite(&rt->dst);
 	}
+
 #ifdef CONFIG_IPV6_SUBTREES
 	ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);
 	rt->rt6i_src.plen = cfg->fc_src_len;
@@ -1672,31 +1662,13 @@ int ip6_route_add(struct fib6_config *cfg)
 	rt->rt6i_flags = cfg->fc_flags;
 
 install_route:
-	if (cfg->fc_mx) {
-		struct nlattr *nla;
-		int remaining;
-
-		nla_for_each_attr(nla, cfg->fc_mx, cfg->fc_mx_len, remaining) {
-			int type = nla_type(nla);
-
-			if (type) {
-				if (type > RTAX_MAX) {
-					err = -EINVAL;
-					goto out;
-				}
-
-				dst_metric_set(&rt->dst, type, nla_get_u32(nla));
-			}
-		}
-	}
-
 	rt->dst.dev = dev;
 	rt->rt6i_idev = idev;
 	rt->rt6i_table = table;
 
 	cfg->fc_nlinfo.nl_net = dev_net(dev);
 
-	return __ip6_ins_rt(rt, &cfg->fc_nlinfo);
+	return __ip6_ins_rt(rt, &cfg->fc_nlinfo, cfg->fc_mx, cfg->fc_mx_len);
 
 out:
 	if (dev)