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

Pull networking updates from David Miller:
 "Reasonably busy this cycle, but perhaps not as busy as in the 4.12
  merge window:

   1) Several optimizations for UDP processing under high load from
      Paolo Abeni.

   2) Support pacing internally in TCP when using the sch_fq packet
      scheduler for this is not practical. From Eric Dumazet.

   3) Support mutliple filter chains per qdisc, from Jiri Pirko.

   4) Move to 1ms TCP timestamp clock, from Eric Dumazet.

   5) Add batch dequeueing to vhost_net, from Jason Wang.

   6) Flesh out more completely SCTP checksum offload support, from
      Davide Caratti.

   7) More plumbing of extended netlink ACKs, from David Ahern, Pablo
      Neira Ayuso, and Matthias Schiffer.

   8) Add devlink support to nfp driver, from Simon Horman.

   9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa
      Prabhu.

  10) Add stack depth tracking to BPF verifier and use this information
      in the various eBPF JITs. From Alexei Starovoitov.

  11) Support XDP on qed device VFs, from Yuval Mintz.

  12) Introduce BPF PROG ID for better introspection of installed BPF
      programs. From Martin KaFai Lau.

  13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann.

  14) For loads, allow narrower accesses in bpf verifier checking, from
      Yonghong Song.

  15) Support MIPS in the BPF selftests and samples infrastructure, the
      MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David
      Daney.

  16) Support kernel based TLS, from Dave Watson and others.

  17) Remove completely DST garbage collection, from Wei Wang.

  18) Allow installing TCP MD5 rules using prefixes, from Ivan
      Delalande.

  19) Add XDP support to Intel i40e driver, from Björn Töpel

  20) Add support for TC flower offload in nfp driver, from Simon
      Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub
      Kicinski, and Bert van Leeuwen.

  21) IPSEC offloading support in mlx5, from Ilan Tayari.

  22) Add HW PTP support to macb driver, from Rafal Ozieblo.

  23) Networking refcount_t conversions, From Elena Reshetova.

  24) Add sock_ops support to BPF, from Lawrence Brako. This is useful
      for tuning the TCP sockopt settings of a group of applications,
      currently via CGROUPs"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits)
  net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap
  dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap
  cxgb4: Support for get_ts_info ethtool method
  cxgb4: Add PTP Hardware Clock (PHC) support
  cxgb4: time stamping interface for PTP
  nfp: default to chained metadata prepend format
  nfp: remove legacy MAC address lookup
  nfp: improve order of interfaces in breakout mode
  net: macb: remove extraneous return when MACB_EXT_DESC is defined
  bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case
  bpf: fix return in load_bpf_file
  mpls: fix rtm policy in mpls_getroute
  net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_route.refcount from atomic_t to refcount_t
  net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t
  net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t
  net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t
  ...

1 files changed, 84 insertions, 15 deletions

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index a19e1781e9bb..fdd8f3872102 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -14,10 +14,10 @@
 #include <linux/phy.h>
 #include <linux/phy_fixed.h>
 #include <linux/export.h>
+#include <linux/ethtool.h>
 #include <linux/workqueue.h>
 #include <linux/module.h>
 #include <linux/if_bridge.h>
-#include <net/switchdev.h>
 #include <net/dsa.h>
 
 #include "dsa_loop.h"
@@ -27,6 +27,30 @@ struct dsa_loop_vlan {
 	u16 untagged;
 };
 
+struct dsa_loop_mib_entry {
+	char name[ETH_GSTRING_LEN];
+	unsigned long val;
+};
+
+enum dsa_loop_mib_counters {
+	DSA_LOOP_PHY_READ_OK,
+	DSA_LOOP_PHY_READ_ERR,
+	DSA_LOOP_PHY_WRITE_OK,
+	DSA_LOOP_PHY_WRITE_ERR,
+	__DSA_LOOP_CNT_MAX,
+};
+
+static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
+	[DSA_LOOP_PHY_READ_OK]	= { "phy_read_ok", },
+	[DSA_LOOP_PHY_READ_ERR]	= { "phy_read_err", },
+	[DSA_LOOP_PHY_WRITE_OK] = { "phy_write_ok", },
+	[DSA_LOOP_PHY_WRITE_ERR] = { "phy_write_err", },
+};
+
+struct dsa_loop_port {
+	struct dsa_loop_mib_entry mib[__DSA_LOOP_CNT_MAX];
+};
+
 #define DSA_LOOP_VLANS	5
 
 struct dsa_loop_priv {
@@ -34,6 +58,7 @@ struct dsa_loop_priv {
 	unsigned int	port_base;
 	struct dsa_loop_vlan vlans[DSA_LOOP_VLANS];
 	struct net_device *netdev;
+	struct dsa_loop_port ports[DSA_MAX_PORTS];
 	u16 pvid;
 };
 
@@ -48,11 +73,43 @@ static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds)
 
 static int dsa_loop_setup(struct dsa_switch *ds)
 {
+	struct dsa_loop_priv *ps = ds->priv;
+	unsigned int i;
+
+	for (i = 0; i < ds->num_ports; i++)
+		memcpy(ps->ports[i].mib, dsa_loop_mibs,
+		       sizeof(dsa_loop_mibs));
+
 	dev_dbg(ds->dev, "%s\n", __func__);
 
 	return 0;
 }
 
+static int dsa_loop_get_sset_count(struct dsa_switch *ds)
+{
+	return __DSA_LOOP_CNT_MAX;
+}
+
+static void dsa_loop_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
+{
+	struct dsa_loop_priv *ps = ds->priv;
+	unsigned int i;
+
+	for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
+		memcpy(data + i * ETH_GSTRING_LEN,
+		       ps->ports[port].mib[i].name, ETH_GSTRING_LEN);
+}
+
+static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,
+				       uint64_t *data)
+{
+	struct dsa_loop_priv *ps = ds->priv;
+	unsigned int i;
+
+	for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
+		data[i] = ps->ports[port].mib[i].val;
+}
+
 static int dsa_loop_set_addr(struct dsa_switch *ds, u8 *addr)
 {
 	dev_dbg(ds->dev, "%s\n", __func__);
@@ -64,10 +121,17 @@ static int dsa_loop_phy_read(struct dsa_switch *ds, int port, int regnum)
 {
 	struct dsa_loop_priv *ps = ds->priv;
 	struct mii_bus *bus = ps->bus;
+	int ret;
 
 	dev_dbg(ds->dev, "%s\n", __func__);
 
-	return mdiobus_read_nested(bus, ps->port_base + port, regnum);
+	ret = mdiobus_read_nested(bus, ps->port_base + port, regnum);
+	if (ret < 0)
+		ps->ports[port].mib[DSA_LOOP_PHY_READ_ERR].val++;
+	else
+		ps->ports[port].mib[DSA_LOOP_PHY_READ_OK].val++;
+
+	return ret;
 }
 
 static int dsa_loop_phy_write(struct dsa_switch *ds, int port,
@@ -75,10 +139,17 @@ static int dsa_loop_phy_write(struct dsa_switch *ds, int port,
 {
 	struct dsa_loop_priv *ps = ds->priv;
 	struct mii_bus *bus = ps->bus;
+	int ret;
 
 	dev_dbg(ds->dev, "%s\n", __func__);
 
-	return mdiobus_write_nested(bus, ps->port_base + port, regnum, value);
+	ret = mdiobus_write_nested(bus, ps->port_base + port, regnum, value);
+	if (ret < 0)
+		ps->ports[port].mib[DSA_LOOP_PHY_WRITE_ERR].val++;
+	else
+		ps->ports[port].mib[DSA_LOOP_PHY_WRITE_OK].val++;
+
+	return ret;
 }
 
 static int dsa_loop_port_bridge_join(struct dsa_switch *ds, int port,
@@ -188,7 +259,7 @@ static int dsa_loop_port_vlan_del(struct dsa_switch *ds, int port,
 
 static int dsa_loop_port_vlan_dump(struct dsa_switch *ds, int port,
 				   struct switchdev_obj_port_vlan *vlan,
-				   int (*cb)(struct switchdev_obj *obj))
+				   switchdev_obj_dump_cb_t *cb)
 {
 	struct dsa_loop_priv *ps = ds->priv;
 	struct mii_bus *bus = ps->bus;
@@ -226,6 +297,9 @@ static int dsa_loop_port_vlan_dump(struct dsa_switch *ds, int port,
 static struct dsa_switch_ops dsa_loop_driver = {
 	.get_tag_protocol	= dsa_loop_get_protocol,
 	.setup			= dsa_loop_setup,
+	.get_strings		= dsa_loop_get_strings,
+	.get_ethtool_stats	= dsa_loop_get_ethtool_stats,
+	.get_sset_count		= dsa_loop_get_sset_count,
 	.set_addr		= dsa_loop_set_addr,
 	.phy_read		= dsa_loop_phy_read,
 	.phy_write		= dsa_loop_phy_write,
@@ -272,7 +346,7 @@ static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
 
 	dev_set_drvdata(&mdiodev->dev, ds);
 
-	return dsa_register_switch(ds, ds->dev);
+	return dsa_register_switch(ds);
 }
 
 static void dsa_loop_drv_remove(struct mdio_device *mdiodev)
@@ -294,15 +368,6 @@ static struct mdio_driver dsa_loop_drv = {
 
 #define NUM_FIXED_PHYS	(DSA_LOOP_NUM_PORTS - 2)
 
-static void unregister_fixed_phys(void)
-{
-	unsigned int i;
-
-	for (i = 0; i < NUM_FIXED_PHYS; i++)
-		if (phydevs[i])
-			fixed_phy_unregister(phydevs[i]);
-}
-
 static int __init dsa_loop_init(void)
 {
 	struct fixed_phy_status status = {
@@ -321,8 +386,12 @@ module_init(dsa_loop_init);
 
 static void __exit dsa_loop_exit(void)
 {
+	unsigned int i;
+
 	mdio_driver_unregister(&dsa_loop_drv);
-	unregister_fixed_phys();
+	for (i = 0; i < NUM_FIXED_PHYS; i++)
+		if (phydevs[i])
+			fixed_phy_unregister(phydevs[i]);
 }
 module_exit(dsa_loop_exit);