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

Pull networking updates from David Miller:

 1) Unified UDP encapsulation offload methods for drivers, from
    Alexander Duyck.

 2) Make DSA binding more sane, from Andrew Lunn.

 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli.

 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar.

 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX
    packets as soon as the device sees them, with the option to mirror
    the packet on TX via the same interface.  From Brenden Blanco and
    others.

 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet.

 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli.

 8) Simplify netlink conntrack entry layout, from Florian Westphal.

 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido
    Schimmel, Yotam Gigi, and Jiri Pirko.

10) Add SKB array infrastructure and convert tun and macvtap over to it.
    From Michael S Tsirkin and Jason Wang.

11) Support qdisc packet injection in pktgen, from John Fastabend.

12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy.

13) Add NV congestion control support to TCP, from Lawrence Brakmo.

14) Add GSO support to SCTP, from Marcelo Ricardo Leitner.

15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni.

16) Support MPLS over IPV4, from Simon Horman.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
  xgene: Fix build warning with ACPI disabled.
  be2net: perform temperature query in adapter regardless of its interface state
  l2tp: Correctly return -EBADF from pppol2tp_getname.
  net/mlx5_core/health: Remove deprecated create_singlethread_workqueue
  net: ipmr/ip6mr: update lastuse on entry change
  macsec: ensure rx_sa is set when validation is disabled
  tipc: dump monitor attributes
  tipc: add a function to get the bearer name
  tipc: get monitor threshold for the cluster
  tipc: make cluster size threshold for monitoring configurable
  tipc: introduce constants for tipc address validation
  net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update()
  MAINTAINERS: xgene: Add driver and documentation path
  Documentation: dtb: xgene: Add MDIO node
  dtb: xgene: Add MDIO node
  drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset
  drivers: net: xgene: Use exported functions
  drivers: net: xgene: Enable MDIO driver
  drivers: net: xgene: Add backward compatibility
  drivers: net: phy: xgene: Add MDIO driver
  ...

1 files changed, 318 insertions, 0 deletions

diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
new file mode 100644
index 000000000000..25927b6c4436
--- /dev/null
+++ b/net/sched/cls_matchall.c
@@ -0,0 +1,318 @@
+/*
+ * net/sched/cls_matchll.c		Match-all classifier
+ *
+ * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <net/sch_generic.h>
+#include <net/pkt_cls.h>
+
+struct cls_mall_filter {
+	struct tcf_exts exts;
+	struct tcf_result res;
+	u32 handle;
+	struct rcu_head	rcu;
+	u32 flags;
+};
+
+struct cls_mall_head {
+	struct cls_mall_filter *filter;
+	struct rcu_head	rcu;
+};
+
+static int mall_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+			 struct tcf_result *res)
+{
+	struct cls_mall_head *head = rcu_dereference_bh(tp->root);
+	struct cls_mall_filter *f = head->filter;
+
+	if (tc_skip_sw(f->flags))
+		return -1;
+
+	return tcf_exts_exec(skb, &f->exts, res);
+}
+
+static int mall_init(struct tcf_proto *tp)
+{
+	struct cls_mall_head *head;
+
+	head = kzalloc(sizeof(*head), GFP_KERNEL);
+	if (!head)
+		return -ENOBUFS;
+
+	rcu_assign_pointer(tp->root, head);
+
+	return 0;
+}
+
+static void mall_destroy_filter(struct rcu_head *head)
+{
+	struct cls_mall_filter *f = container_of(head, struct cls_mall_filter, rcu);
+
+	tcf_exts_destroy(&f->exts);
+
+	kfree(f);
+}
+
+static int mall_replace_hw_filter(struct tcf_proto *tp,
+				  struct cls_mall_filter *f,
+				  unsigned long cookie)
+{
+	struct net_device *dev = tp->q->dev_queue->dev;
+	struct tc_to_netdev offload;
+	struct tc_cls_matchall_offload mall_offload = {0};
+
+	offload.type = TC_SETUP_MATCHALL;
+	offload.cls_mall = &mall_offload;
+	offload.cls_mall->command = TC_CLSMATCHALL_REPLACE;
+	offload.cls_mall->exts = &f->exts;
+	offload.cls_mall->cookie = cookie;
+
+	return dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
+					     &offload);
+}
+
+static void mall_destroy_hw_filter(struct tcf_proto *tp,
+				   struct cls_mall_filter *f,
+				   unsigned long cookie)
+{
+	struct net_device *dev = tp->q->dev_queue->dev;
+	struct tc_to_netdev offload;
+	struct tc_cls_matchall_offload mall_offload = {0};
+
+	offload.type = TC_SETUP_MATCHALL;
+	offload.cls_mall = &mall_offload;
+	offload.cls_mall->command = TC_CLSMATCHALL_DESTROY;
+	offload.cls_mall->exts = NULL;
+	offload.cls_mall->cookie = cookie;
+
+	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
+					     &offload);
+}
+
+static bool mall_destroy(struct tcf_proto *tp, bool force)
+{
+	struct cls_mall_head *head = rtnl_dereference(tp->root);
+	struct net_device *dev = tp->q->dev_queue->dev;
+	struct cls_mall_filter *f = head->filter;
+
+	if (!force && f)
+		return false;
+
+	if (f) {
+		if (tc_should_offload(dev, tp, f->flags))
+			mall_destroy_hw_filter(tp, f, (unsigned long) f);
+
+		call_rcu(&f->rcu, mall_destroy_filter);
+	}
+	RCU_INIT_POINTER(tp->root, NULL);
+	kfree_rcu(head, rcu);
+	return true;
+}
+
+static unsigned long mall_get(struct tcf_proto *tp, u32 handle)
+{
+	struct cls_mall_head *head = rtnl_dereference(tp->root);
+	struct cls_mall_filter *f = head->filter;
+
+	if (f && f->handle == handle)
+		return (unsigned long) f;
+	return 0;
+}
+
+static const struct nla_policy mall_policy[TCA_MATCHALL_MAX + 1] = {
+	[TCA_MATCHALL_UNSPEC]		= { .type = NLA_UNSPEC },
+	[TCA_MATCHALL_CLASSID]		= { .type = NLA_U32 },
+};
+
+static int mall_set_parms(struct net *net, struct tcf_proto *tp,
+			  struct cls_mall_filter *f,
+			  unsigned long base, struct nlattr **tb,
+			  struct nlattr *est, bool ovr)
+{
+	struct tcf_exts e;
+	int err;
+
+	tcf_exts_init(&e, TCA_MATCHALL_ACT, 0);
+	err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
+	if (err < 0)
+		return err;
+
+	if (tb[TCA_MATCHALL_CLASSID]) {
+		f->res.classid = nla_get_u32(tb[TCA_MATCHALL_CLASSID]);
+		tcf_bind_filter(tp, &f->res, base);
+	}
+
+	tcf_exts_change(tp, &f->exts, &e);
+
+	return 0;
+}
+
+static int mall_change(struct net *net, struct sk_buff *in_skb,
+		       struct tcf_proto *tp, unsigned long base,
+		       u32 handle, struct nlattr **tca,
+		       unsigned long *arg, bool ovr)
+{
+	struct cls_mall_head *head = rtnl_dereference(tp->root);
+	struct cls_mall_filter *fold = (struct cls_mall_filter *) *arg;
+	struct net_device *dev = tp->q->dev_queue->dev;
+	struct cls_mall_filter *f;
+	struct nlattr *tb[TCA_MATCHALL_MAX + 1];
+	u32 flags = 0;
+	int err;
+
+	if (!tca[TCA_OPTIONS])
+		return -EINVAL;
+
+	if (head->filter)
+		return -EBUSY;
+
+	if (fold)
+		return -EINVAL;
+
+	err = nla_parse_nested(tb, TCA_MATCHALL_MAX,
+			       tca[TCA_OPTIONS], mall_policy);
+	if (err < 0)
+		return err;
+
+	if (tb[TCA_MATCHALL_FLAGS]) {
+		flags = nla_get_u32(tb[TCA_MATCHALL_FLAGS]);
+		if (!tc_flags_valid(flags))
+			return -EINVAL;
+	}
+
+	f = kzalloc(sizeof(*f), GFP_KERNEL);
+	if (!f)
+		return -ENOBUFS;
+
+	tcf_exts_init(&f->exts, TCA_MATCHALL_ACT, 0);
+
+	if (!handle)
+		handle = 1;
+	f->handle = handle;
+	f->flags = flags;
+
+	err = mall_set_parms(net, tp, f, base, tb, tca[TCA_RATE], ovr);
+	if (err)
+		goto errout;
+
+	if (tc_should_offload(dev, tp, flags)) {
+		err = mall_replace_hw_filter(tp, f, (unsigned long) f);
+		if (err) {
+			if (tc_skip_sw(flags))
+				goto errout;
+			else
+				err = 0;
+		}
+	}
+
+	*arg = (unsigned long) f;
+	rcu_assign_pointer(head->filter, f);
+
+	return 0;
+
+errout:
+	kfree(f);
+	return err;
+}
+
+static int mall_delete(struct tcf_proto *tp, unsigned long arg)
+{
+	struct cls_mall_head *head = rtnl_dereference(tp->root);
+	struct cls_mall_filter *f = (struct cls_mall_filter *) arg;
+	struct net_device *dev = tp->q->dev_queue->dev;
+
+	if (tc_should_offload(dev, tp, f->flags))
+		mall_destroy_hw_filter(tp, f, (unsigned long) f);
+
+	RCU_INIT_POINTER(head->filter, NULL);
+	tcf_unbind_filter(tp, &f->res);
+	call_rcu(&f->rcu, mall_destroy_filter);
+	return 0;
+}
+
+static void mall_walk(struct tcf_proto *tp, struct tcf_walker *arg)
+{
+	struct cls_mall_head *head = rtnl_dereference(tp->root);
+	struct cls_mall_filter *f = head->filter;
+
+	if (arg->count < arg->skip)
+		goto skip;
+	if (arg->fn(tp, (unsigned long) f, arg) < 0)
+		arg->stop = 1;
+skip:
+	arg->count++;
+}
+
+static int mall_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
+		     struct sk_buff *skb, struct tcmsg *t)
+{
+	struct cls_mall_filter *f = (struct cls_mall_filter *) fh;
+	struct nlattr *nest;
+
+	if (!f)
+		return skb->len;
+
+	t->tcm_handle = f->handle;
+
+	nest = nla_nest_start(skb, TCA_OPTIONS);
+	if (!nest)
+		goto nla_put_failure;
+
+	if (f->res.classid &&
+	    nla_put_u32(skb, TCA_MATCHALL_CLASSID, f->res.classid))
+		goto nla_put_failure;
+
+	if (tcf_exts_dump(skb, &f->exts))
+		goto nla_put_failure;
+
+	nla_nest_end(skb, nest);
+
+	if (tcf_exts_dump_stats(skb, &f->exts) < 0)
+		goto nla_put_failure;
+
+	return skb->len;
+
+nla_put_failure:
+	nla_nest_cancel(skb, nest);
+	return -1;
+}
+
+static struct tcf_proto_ops cls_mall_ops __read_mostly = {
+	.kind		= "matchall",
+	.classify	= mall_classify,
+	.init		= mall_init,
+	.destroy	= mall_destroy,
+	.get		= mall_get,
+	.change		= mall_change,
+	.delete		= mall_delete,
+	.walk		= mall_walk,
+	.dump		= mall_dump,
+	.owner		= THIS_MODULE,
+};
+
+static int __init cls_mall_init(void)
+{
+	return register_tcf_proto_ops(&cls_mall_ops);
+}
+
+static void __exit cls_mall_exit(void)
+{
+	unregister_tcf_proto_ops(&cls_mall_ops);
+}
+
+module_init(cls_mall_init);
+module_exit(cls_mall_exit);
+
+MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
+MODULE_DESCRIPTION("Match-all classifier");
+MODULE_LICENSE("GPL v2");