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

Pull networking updates from David Miller:
 "Another merge window, another set of networking changes.  I've heard
  rumblings that the lightweight tunnels infrastructure has been voted
  networking change of the year.  But what do I know?

   1) Add conntrack support to openvswitch, from Joe Stringer.

   2) Initial support for VRF (Virtual Routing and Forwarding), which
      allows the segmentation of routing paths without using multiple
      devices.  There are some semantic kinks to work out still, but
      this is a reasonably strong foundation.  From David Ahern.

   3) Remove spinlock fro act_bpf fast path, from Alexei Starovoitov.

   4) Ignore route nexthops with a link down state in ipv6, just like
      ipv4.  From Andy Gospodarek.

   5) Remove spinlock from fast path of act_gact and act_mirred, from
      Eric Dumazet.

   6) Document the DSA layer, from Florian Fainelli.

   7) Add netconsole support to bcmgenet, systemport, and DSA.  Also
      from Florian Fainelli.

   8) Add Mellanox Switch Driver and core infrastructure, from Jiri
      Pirko.

   9) Add support for "light weight tunnels", which allow for
      encapsulation and decapsulation without bearing the overhead of a
      full blown netdevice.  From Thomas Graf, Jiri Benc, and a cast of
      others.

  10) Add Identifier Locator Addressing support for ipv6, from Tom
      Herbert.

  11) Support fragmented SKBs in iwlwifi, from Johannes Berg.

  12) Allow perf PMUs to be accessed from eBPF programs, from Kaixu Xia.

  13) Add BQL support to 3c59x driver, from Loganaden Velvindron.

  14) Stop using a zero TX queue length to mean that a device shouldn't
      have a qdisc attached, use an explicit flag instead.  From Phil
      Sutter.

  15) Use generic geneve netdevice infrastructure in openvswitch, from
      Pravin B Shelar.

  16) Add infrastructure to avoid re-forwarding a packet in software
      that was already forwarded by a hardware switch.  From Scott
      Feldman.

  17) Allow AF_PACKET fanout function to be implemented in a bpf
      program, from Willem de Bruijn"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1458 commits)
  netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
  netfilter: nf_dup{4, 6}: fix build error when nf_conntrack disabled
  net: fec: clear receive interrupts before processing a packet
  ipv6: fix exthdrs offload registration in out_rt path
  xen-netback: add support for multicast control
  bgmac: Update fixed_phy_register()
  sock, diag: fix panic in sock_diag_put_filterinfo
  flow_dissector: Use 'const' where possible.
  flow_dissector: Fix function argument ordering dependency
  ixgbe: Resolve "initialized field overwritten" warnings
  ixgbe: Remove bimodal SR-IOV disabling
  ixgbe: Add support for reporting 2.5G link speed
  ixgbe: fix bounds checking in ixgbe_setup_tc for 82598
  ixgbe: support for ethtool set_rxfh
  ixgbe: Avoid needless PHY access on copper phys
  ixgbe: cleanup to use cached mask value
  ixgbe: Remove second instance of lan_id variable
  ixgbe: use kzalloc for allocating one thing
  flow: Move __get_hash_from_flowi{4,6} into flow_dissector.c
  ixgbe: Remove unused PCI bus types
  ...

1 files changed, 46 insertions, 30 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 82dbdb0..711cca4 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -707,54 +707,69 @@ static inline void iph_to_flow_copy_v6addrs(struct flow_keys *flow,
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static inline void ip6_set_txhash(struct sock *sk)
-{
-	struct inet_sock *inet = inet_sk(sk);
-	struct ipv6_pinfo *np = inet6_sk(sk);
-	struct flow_keys keys;
 
-	memset(&keys, 0, sizeof(keys));
+/* Sysctl settings for net ipv6.auto_flowlabels */
+#define IP6_AUTO_FLOW_LABEL_OFF		0
+#define IP6_AUTO_FLOW_LABEL_OPTOUT	1
+#define IP6_AUTO_FLOW_LABEL_OPTIN	2
+#define IP6_AUTO_FLOW_LABEL_FORCED	3
 
-	memcpy(&keys.addrs.v6addrs.src, &np->saddr,
-	       sizeof(keys.addrs.v6addrs.src));
-	memcpy(&keys.addrs.v6addrs.dst, &sk->sk_v6_daddr,
-	       sizeof(keys.addrs.v6addrs.dst));
-	keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
-	keys.ports.src = inet->inet_sport;
-	keys.ports.dst = inet->inet_dport;
+#define IP6_AUTO_FLOW_LABEL_MAX		IP6_AUTO_FLOW_LABEL_FORCED
 
-	sk->sk_txhash = flow_hash_from_keys(&keys);
-}
+#define IP6_DEFAULT_AUTO_FLOW_LABELS	IP6_AUTO_FLOW_LABEL_OPTOUT
 
 static inline __be32 ip6_make_flowlabel(struct net *net, struct sk_buff *skb,
-					__be32 flowlabel, bool autolabel)
+					__be32 flowlabel, bool autolabel,
+					struct flowi6 *fl6)
 {
-	if (!flowlabel && (autolabel || net->ipv6.sysctl.auto_flowlabels)) {
-		u32 hash;
+	u32 hash;
+
+	if (flowlabel ||
+	    net->ipv6.sysctl.auto_flowlabels == IP6_AUTO_FLOW_LABEL_OFF ||
+	    (!autolabel &&
+	     net->ipv6.sysctl.auto_flowlabels != IP6_AUTO_FLOW_LABEL_FORCED))
+		return flowlabel;
 
-		hash = skb_get_hash(skb);
+	hash = skb_get_hash_flowi6(skb, fl6);
 
-		/* Since this is being sent on the wire obfuscate hash a bit
-		 * to minimize possbility that any useful information to an
-		 * attacker is leaked. Only lower 20 bits are relevant.
-		 */
-		hash ^= hash >> 12;
+	/* Since this is being sent on the wire obfuscate hash a bit
+	 * to minimize possbility that any useful information to an
+	 * attacker is leaked. Only lower 20 bits are relevant.
+	 */
+	rol32(hash, 16);
 
-		flowlabel = (__force __be32)hash & IPV6_FLOWLABEL_MASK;
+	flowlabel = (__force __be32)hash & IPV6_FLOWLABEL_MASK;
 
-		if (net->ipv6.sysctl.flowlabel_state_ranges)
-			flowlabel |= IPV6_FLOWLABEL_STATELESS_FLAG;
-	}
+	if (net->ipv6.sysctl.flowlabel_state_ranges)
+		flowlabel |= IPV6_FLOWLABEL_STATELESS_FLAG;
 
 	return flowlabel;
 }
+
+static inline int ip6_default_np_autolabel(struct net *net)
+{
+	switch (net->ipv6.sysctl.auto_flowlabels) {
+	case IP6_AUTO_FLOW_LABEL_OFF:
+	case IP6_AUTO_FLOW_LABEL_OPTIN:
+	default:
+		return 0;
+	case IP6_AUTO_FLOW_LABEL_OPTOUT:
+	case IP6_AUTO_FLOW_LABEL_FORCED:
+		return 1;
+	}
+}
 #else
 static inline void ip6_set_txhash(struct sock *sk) { }
 static inline __be32 ip6_make_flowlabel(struct net *net, struct sk_buff *skb,
-					__be32 flowlabel, bool autolabel)
+					__be32 flowlabel, bool autolabel,
+					struct flowi6 *fl6)
 {
 	return flowlabel;
 }
+static inline int ip6_default_np_autolabel(struct net *net)
+{
+	return 0;
+}
 #endif
 
 
@@ -832,7 +847,8 @@ static inline struct sk_buff *ip6_finish_skb(struct sock *sk)
 			      &inet6_sk(sk)->cork);
 }
 
-int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6);
+int ip6_dst_lookup(struct net *net, struct sock *sk, struct dst_entry **dst,
+		   struct flowi6 *fl6);
 struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,
 				      const struct in6_addr *final_dst);
 struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,