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

Pull networking updates from David Miller:
 "Highlights:

   1) Maintain the TCP retransmit queue using an rbtree, with 1GB
      windows at 100Gb this really has become necessary. From Eric
      Dumazet.

   2) Multi-program support for cgroup+bpf, from Alexei Starovoitov.

   3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew
      Lunn.

   4) Add meter action support to openvswitch, from Andy Zhou.

   5) Add a data meta pointer for BPF accessible packets, from Daniel
      Borkmann.

   6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet.

   7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli.

   8) More work to move the RTNL mutex down, from Florian Westphal.

   9) Add 'bpftool' utility, to help with bpf program introspection.
      From Jakub Kicinski.

  10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper
      Dangaard Brouer.

  11) Support 'blocks' of transformations in the packet scheduler which
      can span multiple network devices, from Jiri Pirko.

  12) TC flower offload support in cxgb4, from Kumar Sanghvi.

  13) Priority based stream scheduler for SCTP, from Marcelo Ricardo
      Leitner.

  14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg.

  15) Add RED qdisc offloadability, and use it in mlxsw driver. From
      Nogah Frankel.

  16) eBPF based device controller for cgroup v2, from Roman Gushchin.

  17) Add some fundamental tracepoints for TCP, from Song Liu.

  18) Remove garbage collection from ipv6 route layer, this is a
      significant accomplishment. From Wei Wang.

  19) Add multicast route offload support to mlxsw, from Yotam Gigi"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits)
  tcp: highest_sack fix
  geneve: fix fill_info when link down
  bpf: fix lockdep splat
  net: cdc_ncm: GetNtbFormat endian fix
  openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start
  netem: remove unnecessary 64 bit modulus
  netem: use 64 bit divide by rate
  tcp: Namespace-ify sysctl_tcp_default_congestion_control
  net: Protect iterations over net::fib_notifier_ops in fib_seq_sum()
  ipv6: set all.accept_dad to 0 by default
  uapi: fix linux/tls.h userspace compilation error
  usbnet: ipheth: prevent TX queue timeouts when device not ready
  vhost_net: conditionally enable tx polling
  uapi: fix linux/rxrpc.h userspace compilation errors
  net: stmmac: fix LPI transitioning for dwmac4
  atm: horizon: Fix irq release error
  net-sysfs: trigger netlink notification on ifalias change via sysfs
  openvswitch: Using kfree_rcu() to simplify the code
  openvswitch: Make local function ovs_nsh_key_attr_size() static
  openvswitch: Fix return value check in ovs_meter_cmd_features()
  ...

1 files changed, 20 insertions, 35 deletions

diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index ffa8eec980e9..a6214f235333 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -46,7 +46,6 @@
 struct xt_connlimit_conn {
 	struct hlist_node		node;
 	struct nf_conntrack_tuple	tuple;
-	union nf_inet_addr		addr;
 };
 
 struct xt_connlimit_rb {
@@ -72,16 +71,9 @@ static inline unsigned int connlimit_iphash(__be32 addr)
 }
 
 static inline unsigned int
-connlimit_iphash6(const union nf_inet_addr *addr,
-                  const union nf_inet_addr *mask)
+connlimit_iphash6(const union nf_inet_addr *addr)
 {
-	union nf_inet_addr res;
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(addr->ip6); ++i)
-		res.ip6[i] = addr->ip6[i] & mask->ip6[i];
-
-	return jhash2((u32 *)res.ip6, ARRAY_SIZE(res.ip6),
+	return jhash2((u32 *)addr->ip6, ARRAY_SIZE(addr->ip6),
 		       connlimit_rnd) % CONNLIMIT_SLOTS;
 }
 
@@ -95,24 +87,13 @@ static inline bool already_closed(const struct nf_conn *conn)
 }
 
 static int
-same_source_net(const union nf_inet_addr *addr,
-		const union nf_inet_addr *mask,
-		const union nf_inet_addr *u3, u_int8_t family)
+same_source(const union nf_inet_addr *addr,
+	    const union nf_inet_addr *u3, u_int8_t family)
 {
-	if (family == NFPROTO_IPV4) {
-		return ntohl(addr->ip & mask->ip) -
-		       ntohl(u3->ip & mask->ip);
-	} else {
-		union nf_inet_addr lh, rh;
-		unsigned int i;
-
-		for (i = 0; i < ARRAY_SIZE(addr->ip6); ++i) {
-			lh.ip6[i] = addr->ip6[i] & mask->ip6[i];
-			rh.ip6[i] = u3->ip6[i] & mask->ip6[i];
-		}
+	if (family == NFPROTO_IPV4)
+		return ntohl(addr->ip) - ntohl(u3->ip);
 
-		return memcmp(&lh.ip6, &rh.ip6, sizeof(lh.ip6));
-	}
+	return memcmp(addr->ip6, u3->ip6, sizeof(addr->ip6));
 }
 
 static bool add_hlist(struct hlist_head *head,
@@ -125,7 +106,6 @@ static bool add_hlist(struct hlist_head *head,
 	if (conn == NULL)
 		return false;
 	conn->tuple = *tuple;
-	conn->addr = *addr;
 	hlist_add_head(&conn->node, head);
 	return true;
 }
@@ -196,7 +176,7 @@ static void tree_nodes_free(struct rb_root *root,
 static unsigned int
 count_tree(struct net *net, struct rb_root *root,
 	   const struct nf_conntrack_tuple *tuple,
-	   const union nf_inet_addr *addr, const union nf_inet_addr *mask,
+	   const union nf_inet_addr *addr,
 	   u8 family, const struct nf_conntrack_zone *zone)
 {
 	struct xt_connlimit_rb *gc_nodes[CONNLIMIT_GC_MAX_NODES];
@@ -217,7 +197,7 @@ count_tree(struct net *net, struct rb_root *root,
 		rbconn = rb_entry(*rbnode, struct xt_connlimit_rb, node);
 
 		parent = *rbnode;
-		diff = same_source_net(addr, mask, &rbconn->addr, family);
+		diff = same_source(addr, &rbconn->addr, family);
 		if (diff < 0) {
 			rbnode = &((*rbnode)->rb_left);
 		} else if (diff > 0) {
@@ -270,7 +250,6 @@ count_tree(struct net *net, struct rb_root *root,
 	}
 
 	conn->tuple = *tuple;
-	conn->addr = *addr;
 	rbconn->addr = *addr;
 
 	INIT_HLIST_HEAD(&rbconn->hhead);
@@ -285,7 +264,6 @@ static int count_them(struct net *net,
 		      struct xt_connlimit_data *data,
 		      const struct nf_conntrack_tuple *tuple,
 		      const union nf_inet_addr *addr,
-		      const union nf_inet_addr *mask,
 		      u_int8_t family,
 		      const struct nf_conntrack_zone *zone)
 {
@@ -294,14 +272,14 @@ static int count_them(struct net *net,
 	u32 hash;
 
 	if (family == NFPROTO_IPV6)
-		hash = connlimit_iphash6(addr, mask);
+		hash = connlimit_iphash6(addr);
 	else
-		hash = connlimit_iphash(addr->ip & mask->ip);
+		hash = connlimit_iphash(addr->ip);
 	root = &data->climit_root[hash];
 
 	spin_lock_bh(&xt_connlimit_locks[hash % CONNLIMIT_LOCK_SLOTS]);
 
-	count = count_tree(net, root, tuple, addr, mask, family, zone);
+	count = count_tree(net, root, tuple, addr, family, zone);
 
 	spin_unlock_bh(&xt_connlimit_locks[hash % CONNLIMIT_LOCK_SLOTS]);
 
@@ -332,16 +310,23 @@ connlimit_mt(const struct sk_buff *skb, struct xt_action_param *par)
 
 	if (xt_family(par) == NFPROTO_IPV6) {
 		const struct ipv6hdr *iph = ipv6_hdr(skb);
+		unsigned int i;
+
 		memcpy(&addr.ip6, (info->flags & XT_CONNLIMIT_DADDR) ?
 		       &iph->daddr : &iph->saddr, sizeof(addr.ip6));
+
+		for (i = 0; i < ARRAY_SIZE(addr.ip6); ++i)
+			addr.ip6[i] &= info->mask.ip6[i];
 	} else {
 		const struct iphdr *iph = ip_hdr(skb);
 		addr.ip = (info->flags & XT_CONNLIMIT_DADDR) ?
 			  iph->daddr : iph->saddr;
+
+		addr.ip &= info->mask.ip;
 	}
 
 	connections = count_them(net, info->data, tuple_ptr, &addr,
-	                         &info->mask, xt_family(par), zone);
+				 xt_family(par), zone);
 	if (connections == 0)
 		/* kmalloc failed, drop it entirely */
 		goto hotdrop;