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, 31 insertions, 54 deletions

diff --git a/net/dsa/legacy.c b/net/dsa/legacy.c
index 91e6f7981d39..84611d7fcfa2 100644
--- a/net/dsa/legacy.c
+++ b/net/dsa/legacy.c
@@ -86,7 +86,7 @@ static int dsa_cpu_dsa_setups(struct dsa_switch *ds)
 		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
 			continue;
 
-		ret = dsa_cpu_dsa_setup(&ds->ports[port]);
+		ret = dsa_port_fixed_link_register_of(&ds->ports[port]);
 		if (ret)
 			return ret;
 	}
@@ -101,6 +101,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 	struct dsa_chip_data *cd = ds->cd;
 	bool valid_name_found = false;
 	int index = ds->index;
+	struct dsa_port *dp;
 	int i, ret;
 
 	/*
@@ -109,9 +110,12 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 	for (i = 0; i < ds->num_ports; i++) {
 		char *name;
 
+		dp = &ds->ports[i];
+
 		name = cd->port_names[i];
 		if (name == NULL)
 			continue;
+		dp->name = name;
 
 		if (!strcmp(name, "cpu")) {
 			if (dst->cpu_dp) {
@@ -120,12 +124,12 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 				return -EINVAL;
 			}
 			dst->cpu_dp = &ds->ports[i];
-			dst->cpu_dp->netdev = master;
-			ds->cpu_port_mask |= 1 << i;
+			dst->cpu_dp->master = master;
+			dp->type = DSA_PORT_TYPE_CPU;
 		} else if (!strcmp(name, "dsa")) {
-			ds->dsa_port_mask |= 1 << i;
+			dp->type = DSA_PORT_TYPE_DSA;
 		} else {
-			ds->enabled_port_mask |= 1 << i;
+			dp->type = DSA_PORT_TYPE_USER;
 		}
 		valid_name_found = true;
 	}
@@ -136,7 +140,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 	/* Make the built-in MII bus mask match the number of ports,
 	 * switch drivers can override this later
 	 */
-	ds->phys_mii_mask = ds->enabled_port_mask;
+	ds->phys_mii_mask |= dsa_user_ports(ds);
 
 	/*
 	 * If the CPU connects to this switch, set the switch tree
@@ -144,14 +148,19 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 	 * switch.
 	 */
 	if (dst->cpu_dp->ds == ds) {
+		const struct dsa_device_ops *tag_ops;
 		enum dsa_tag_protocol tag_protocol;
 
-		tag_protocol = ops->get_tag_protocol(ds);
-		dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
-		if (IS_ERR(dst->tag_ops))
-			return PTR_ERR(dst->tag_ops);
+		tag_protocol = ops->get_tag_protocol(ds, dst->cpu_dp->index);
+		tag_ops = dsa_resolve_tag_protocol(tag_protocol);
+		if (IS_ERR(tag_ops))
+			return PTR_ERR(tag_ops);
+
+		dst->cpu_dp->tag_ops = tag_ops;
 
-		dst->rcv = dst->tag_ops->rcv;
+		/* Few copies for faster access in master receive hot path */
+		dst->cpu_dp->rcv = dst->cpu_dp->tag_ops->rcv;
+		dst->cpu_dp->dst = dst;
 	}
 
 	memcpy(ds->rtable, cd->rtable, sizeof(ds->rtable));
@@ -167,12 +176,6 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 	if (ret)
 		return ret;
 
-	if (ops->set_addr) {
-		ret = ops->set_addr(ds, master->dev_addr);
-		if (ret < 0)
-			return ret;
-	}
-
 	if (!ds->slave_mii_bus && ops->phy_read) {
 		ds->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
 		if (!ds->slave_mii_bus)
@@ -191,10 +194,10 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 		ds->ports[i].dn = cd->port_dn[i];
 		ds->ports[i].cpu_dp = dst->cpu_dp;
 
-		if (!(ds->enabled_port_mask & (1 << i)))
+		if (dsa_is_user_port(ds, i))
 			continue;
 
-		ret = dsa_slave_create(&ds->ports[i], cd->port_names[i]);
+		ret = dsa_slave_create(&ds->ports[i]);
 		if (ret < 0)
 			netdev_err(master, "[%d]: can't create dsa slave device for port %d(%s): %d\n",
 				   index, i, cd->port_names[i], ret);
@@ -206,10 +209,6 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
 		netdev_err(master, "[%d] : can't configure CPU and DSA ports\n",
 			   index);
 
-	ret = dsa_cpu_port_ethtool_setup(ds->dst->cpu_dp);
-	if (ret)
-		return ret;
-
 	return 0;
 }
 
@@ -263,24 +262,20 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
 
 	/* Destroy network devices for physical switch ports. */
 	for (port = 0; port < ds->num_ports; port++) {
-		if (!(ds->enabled_port_mask & (1 << port)))
+		if (!dsa_is_user_port(ds, port))
 			continue;
 
-		if (!ds->ports[port].netdev)
+		if (!ds->ports[port].slave)
 			continue;
 
-		dsa_slave_destroy(ds->ports[port].netdev);
+		dsa_slave_destroy(ds->ports[port].slave);
 	}
 
 	/* Disable configuration of the CPU and DSA ports */
 	for (port = 0; port < ds->num_ports; port++) {
 		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
 			continue;
-		dsa_cpu_dsa_destroy(&ds->ports[port]);
-
-		/* Clearing a bit which is not set does no harm */
-		ds->cpu_port_mask |= ~(1 << port);
-		ds->dsa_port_mask |= ~(1 << port);
+		dsa_port_fixed_link_unregister_of(&ds->ports[port]);
 	}
 
 	if (ds->slave_mii_bus && ds->ops->phy_read)
@@ -598,15 +593,7 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
 	if (!configured)
 		return -EPROBE_DEFER;
 
-	/*
-	 * If we use a tagging format that doesn't have an ethertype
-	 * field, make sure that all packets from this point on get
-	 * sent to the tag format's receive function.
-	 */
-	wmb();
-	dev->dsa_ptr = dst;
-
-	return 0;
+	return dsa_master_setup(dst->cpu_dp->master, dst->cpu_dp);
 }
 
 static int dsa_probe(struct platform_device *pdev)
@@ -671,13 +658,7 @@ static void dsa_remove_dst(struct dsa_switch_tree *dst)
 {
 	int i;
 
-	dst->cpu_dp->netdev->dsa_ptr = NULL;
-
-	/* If we used a tagging format that doesn't have an ethertype
-	 * field, make sure that all packets from this point get sent
-	 * without the tag and go through the regular receive path.
-	 */
-	wmb();
+	dsa_master_teardown(dst->cpu_dp->master);
 
 	for (i = 0; i < dst->pd->nr_chips; i++) {
 		struct dsa_switch *ds = dst->ds[i];
@@ -686,9 +667,7 @@ static void dsa_remove_dst(struct dsa_switch_tree *dst)
 			dsa_switch_destroy(ds);
 	}
 
-	dsa_cpu_port_ethtool_restore(dst->cpu_dp);
-
-	dev_put(dst->cpu_dp->netdev);
+	dev_put(dst->cpu_dp->master);
 }
 
 static int dsa_remove(struct platform_device *pdev)
@@ -745,8 +724,7 @@ int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 		       const unsigned char *addr, u16 vid,
 		       u16 flags)
 {
-	struct dsa_slave_priv *p = netdev_priv(dev);
-	struct dsa_port *dp = p->dp;
+	struct dsa_port *dp = dsa_slave_to_port(dev);
 
 	return dsa_port_fdb_add(dp, addr, vid);
 }
@@ -755,8 +733,7 @@ int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 		       struct net_device *dev,
 		       const unsigned char *addr, u16 vid)
 {
-	struct dsa_slave_priv *p = netdev_priv(dev);
-	struct dsa_port *dp = p->dp;
+	struct dsa_port *dp = dsa_slave_to_port(dev);
 
 	return dsa_port_fdb_del(dp, addr, vid);
 }