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

Pull networking updates from David Miller:
 "Another merge window, another pull full of stuff:

   1) Support alternative names for network devices, from Jiri Pirko.

   2) Introduce per-netns netdev notifiers, also from Jiri Pirko.

   3) Support MSG_PEEK in vsock/virtio, from Matias Ezequiel Vara
      Larsen.

   4) Allow compiling out the TLS TOE code, from Jakub Kicinski.

   5) Add several new tracepoints to the kTLS code, also from Jakub.

   6) Support set channels ethtool callback in ena driver, from Sameeh
      Jubran.

   7) New SCTP events SCTP_ADDR_ADDED, SCTP_ADDR_REMOVED,
      SCTP_ADDR_MADE_PRIM, and SCTP_SEND_FAILED_EVENT. From Xin Long.

   8) Add XDP support to mvneta driver, from Lorenzo Bianconi.

   9) Lots of netfilter hw offload fixes, cleanups and enhancements,
      from Pablo Neira Ayuso.

  10) PTP support for aquantia chips, from Egor Pomozov.

  11) Add UDP segmentation offload support to igb, ixgbe, and i40e. From
      Josh Hunt.

  12) Add smart nagle to tipc, from Jon Maloy.

  13) Support L2 field rewrite by TC offloads in bnxt_en, from Venkat
      Duvvuru.

  14) Add a flow mask cache to OVS, from Tonghao Zhang.

  15) Add XDP support to ice driver, from Maciej Fijalkowski.

  16) Add AF_XDP support to ice driver, from Krzysztof Kazimierczak.

  17) Support UDP GSO offload in atlantic driver, from Igor Russkikh.

  18) Support it in stmmac driver too, from Jose Abreu.

  19) Support TIPC encryption and auth, from Tuong Lien.

  20) Introduce BPF trampolines, from Alexei Starovoitov.

  21) Make page_pool API more numa friendly, from Saeed Mahameed.

  22) Introduce route hints to ipv4 and ipv6, from Paolo Abeni.

  23) Add UDP segmentation offload to cxgb4, Rahul Lakkireddy"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1857 commits)
  libbpf: Fix usage of u32 in userspace code
  mm: Implement no-MMU variant of vmalloc_user_node_flags
  slip: Fix use-after-free Read in slip_open
  net: dsa: sja1105: fix sja1105_parse_rgmii_delays()
  macvlan: schedule bc_work even if error
  enetc: add support Credit Based Shaper(CBS) for hardware offload
  net: phy: add helpers phy_(un)lock_mdio_bus
  mdio_bus: don't use managed reset-controller
  ax88179_178a: add ethtool_op_get_ts_info()
  mlxsw: spectrum_router: Fix use of uninitialized adjacency index
  mlxsw: spectrum_router: After underlay moves, demote conflicting tunnels
  bpf: Simplify __bpf_arch_text_poke poke type handling
  bpf: Introduce BPF_TRACE_x helper for the tracing tests
  bpf: Add bpf_jit_blinding_enabled for !CONFIG_BPF_JIT
  bpf, testing: Add various tail call test cases
  bpf, x86: Emit patchable direct jump as tail call
  bpf: Constant map key tracking for prog array pokes
  bpf: Add poke dependency tracking for prog array maps
  bpf: Add initial poke descriptor table for jit images
  bpf: Move owner type, jited info into array auxiliary data
  ...

1 files changed, 214 insertions, 6 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index adb66a2fae18..0887ed2bb050 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -27,6 +27,7 @@
 #include <linux/bitmap.h>
 #include <linux/phy.h>
 #include <linux/phy_led_triggers.h>
+#include <linux/sfp.h>
 #include <linux/mdio.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
@@ -488,7 +489,7 @@ static int phy_bus_match(struct device *dev, struct device_driver *drv)
 
 	if (phydev->is_c45) {
 		for (i = 1; i < num_ids; i++) {
-			if (!(phydev->c45_ids.devices_in_package & (1 << i)))
+			if (phydev->c45_ids.device_ids[i] == 0xffffffff)
 				continue;
 
 			if ((phydrv->phy_id & phydrv->phy_id_mask) ==
@@ -596,8 +597,8 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
 	mdiodev->device_free = phy_mdio_device_free;
 	mdiodev->device_remove = phy_mdio_device_remove;
 
-	dev->speed = 0;
-	dev->duplex = -1;
+	dev->speed = SPEED_UNKNOWN;
+	dev->duplex = DUPLEX_UNKNOWN;
 	dev->pause = 0;
 	dev->asym_pause = 0;
 	dev->link = 0;
@@ -632,7 +633,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
 		int i;
 
 		for (i = 1; i < num_ids; i++) {
-			if (!(c45_ids->devices_in_package & (1 << i)))
+			if (c45_ids->device_ids[i] == 0xffffffff)
 				continue;
 
 			ret = phy_request_driver_module(dev,
@@ -812,10 +813,13 @@ static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
  */
 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
 {
-	struct phy_c45_device_ids c45_ids = {0};
+	struct phy_c45_device_ids c45_ids;
 	u32 phy_id = 0;
 	int r;
 
+	c45_ids.devices_in_package = 0;
+	memset(c45_ids.device_ids, 0xff, sizeof(c45_ids.device_ids));
+
 	r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids);
 	if (r)
 		return ERR_PTR(r);
@@ -1175,6 +1179,65 @@ phy_standalone_show(struct device *dev, struct device_attribute *attr,
 static DEVICE_ATTR_RO(phy_standalone);
 
 /**
+ * phy_sfp_attach - attach the SFP bus to the PHY upstream network device
+ * @upstream: pointer to the phy device
+ * @bus: sfp bus representing cage being attached
+ *
+ * This is used to fill in the sfp_upstream_ops .attach member.
+ */
+void phy_sfp_attach(void *upstream, struct sfp_bus *bus)
+{
+	struct phy_device *phydev = upstream;
+
+	if (phydev->attached_dev)
+		phydev->attached_dev->sfp_bus = bus;
+	phydev->sfp_bus_attached = true;
+}
+EXPORT_SYMBOL(phy_sfp_attach);
+
+/**
+ * phy_sfp_detach - detach the SFP bus from the PHY upstream network device
+ * @upstream: pointer to the phy device
+ * @bus: sfp bus representing cage being attached
+ *
+ * This is used to fill in the sfp_upstream_ops .detach member.
+ */
+void phy_sfp_detach(void *upstream, struct sfp_bus *bus)
+{
+	struct phy_device *phydev = upstream;
+
+	if (phydev->attached_dev)
+		phydev->attached_dev->sfp_bus = NULL;
+	phydev->sfp_bus_attached = false;
+}
+EXPORT_SYMBOL(phy_sfp_detach);
+
+/**
+ * phy_sfp_probe - probe for a SFP cage attached to this PHY device
+ * @phydev: Pointer to phy_device
+ * @ops: SFP's upstream operations
+ */
+int phy_sfp_probe(struct phy_device *phydev,
+		  const struct sfp_upstream_ops *ops)
+{
+	struct sfp_bus *bus;
+	int ret;
+
+	if (phydev->mdio.dev.fwnode) {
+		bus = sfp_bus_find_fwnode(phydev->mdio.dev.fwnode);
+		if (IS_ERR(bus))
+			return PTR_ERR(bus);
+
+		phydev->sfp_bus = bus;
+
+		ret = sfp_bus_add_upstream(bus, phydev, ops);
+		sfp_bus_put(bus);
+	}
+	return 0;
+}
+EXPORT_SYMBOL(phy_sfp_probe);
+
+/**
  * phy_attach_direct - attach a network device to a given PHY device pointer
  * @dev: network device to attach
  * @phydev: Pointer to phy_device to attach
@@ -1249,6 +1312,9 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 	if (dev) {
 		phydev->attached_dev = dev;
 		dev->phydev = phydev;
+
+		if (phydev->sfp_bus_attached)
+			dev->sfp_bus = phydev->sfp_bus;
 	}
 
 	/* Some Ethernet drivers try to connect to a PHY device before
@@ -1270,7 +1336,7 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 			phydev_err(phydev, "error creating 'phy_standalone' sysfs entry\n");
 	}
 
-	phydev->dev_flags = flags;
+	phydev->dev_flags |= flags;
 
 	phydev->interface = interface;
 
@@ -1608,6 +1674,40 @@ static int genphy_config_advert(struct phy_device *phydev)
 }
 
 /**
+ * genphy_c37_config_advert - sanitize and advertise auto-negotiation parameters
+ * @phydev: target phy_device struct
+ *
+ * Description: Writes MII_ADVERTISE with the appropriate values,
+ *   after sanitizing the values to make sure we only advertise
+ *   what is supported.  Returns < 0 on error, 0 if the PHY's advertisement
+ *   hasn't changed, and > 0 if it has changed. This function is intended
+ *   for Clause 37 1000Base-X mode.
+ */
+static int genphy_c37_config_advert(struct phy_device *phydev)
+{
+	u16 adv = 0;
+
+	/* Only allow advertising what this PHY supports */
+	linkmode_and(phydev->advertising, phydev->advertising,
+		     phydev->supported);
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
+			      phydev->advertising))
+		adv |= ADVERTISE_1000XFULL;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+			      phydev->advertising))
+		adv |= ADVERTISE_1000XPAUSE;
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+			      phydev->advertising))
+		adv |= ADVERTISE_1000XPSE_ASYM;
+
+	return phy_modify_changed(phydev, MII_ADVERTISE,
+				  ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
+				  ADVERTISE_1000XHALF | ADVERTISE_1000XPSE_ASYM,
+				  adv);
+}
+
+/**
  * genphy_config_eee_advert - disable unwanted eee mode advertisement
  * @phydev: target phy_device struct
  *
@@ -1716,6 +1816,54 @@ int __genphy_config_aneg(struct phy_device *phydev, bool changed)
 EXPORT_SYMBOL(__genphy_config_aneg);
 
 /**
+ * genphy_c37_config_aneg - restart auto-negotiation or write BMCR
+ * @phydev: target phy_device struct
+ *
+ * Description: If auto-negotiation is enabled, we configure the
+ *   advertising, and then restart auto-negotiation.  If it is not
+ *   enabled, then we write the BMCR. This function is intended
+ *   for use with Clause 37 1000Base-X mode.
+ */
+int genphy_c37_config_aneg(struct phy_device *phydev)
+{
+	int err, changed;
+
+	if (phydev->autoneg != AUTONEG_ENABLE)
+		return genphy_setup_forced(phydev);
+
+	err = phy_modify(phydev, MII_BMCR, BMCR_SPEED1000 | BMCR_SPEED100,
+			 BMCR_SPEED1000);
+	if (err)
+		return err;
+
+	changed = genphy_c37_config_advert(phydev);
+	if (changed < 0) /* error */
+		return changed;
+
+	if (!changed) {
+		/* Advertisement hasn't changed, but maybe aneg was never on to
+		 * begin with?  Or maybe phy was isolated?
+		 */
+		int ctl = phy_read(phydev, MII_BMCR);
+
+		if (ctl < 0)
+			return ctl;
+
+		if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
+			changed = 1; /* do restart aneg */
+	}
+
+	/* Only restart aneg if we are advertising something different
+	 * than we were before.
+	 */
+	if (changed > 0)
+		return genphy_restart_aneg(phydev);
+
+	return 0;
+}
+EXPORT_SYMBOL(genphy_c37_config_aneg);
+
+/**
  * genphy_aneg_done - return auto-negotiation status
  * @phydev: target phy_device struct
  *
@@ -1887,6 +2035,63 @@ int genphy_read_status(struct phy_device *phydev)
 EXPORT_SYMBOL(genphy_read_status);
 
 /**
+ * genphy_c37_read_status - check the link status and update current link state
+ * @phydev: target phy_device struct
+ *
+ * Description: Check the link, then figure out the current state
+ *   by comparing what we advertise with what the link partner
+ *   advertises. This function is for Clause 37 1000Base-X mode.
+ */
+int genphy_c37_read_status(struct phy_device *phydev)
+{
+	int lpa, err, old_link = phydev->link;
+
+	/* Update the link, but return if there was an error */
+	err = genphy_update_link(phydev);
+	if (err)
+		return err;
+
+	/* why bother the PHY if nothing can have changed */
+	if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link)
+		return 0;
+
+	phydev->duplex = DUPLEX_UNKNOWN;
+	phydev->pause = 0;
+	phydev->asym_pause = 0;
+
+	if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) {
+		lpa = phy_read(phydev, MII_LPA);
+		if (lpa < 0)
+			return lpa;
+
+		linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+				 phydev->lp_advertising, lpa & LPA_LPACK);
+		linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
+				 phydev->lp_advertising, lpa & LPA_1000XFULL);
+		linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+				 phydev->lp_advertising, lpa & LPA_1000XPAUSE);
+		linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+				 phydev->lp_advertising,
+				 lpa & LPA_1000XPAUSE_ASYM);
+
+		phy_resolve_aneg_linkmode(phydev);
+	} else if (phydev->autoneg == AUTONEG_DISABLE) {
+		int bmcr = phy_read(phydev, MII_BMCR);
+
+		if (bmcr < 0)
+			return bmcr;
+
+		if (bmcr & BMCR_FULLDPLX)
+			phydev->duplex = DUPLEX_FULL;
+		else
+			phydev->duplex = DUPLEX_HALF;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(genphy_c37_read_status);
+
+/**
  * genphy_soft_reset - software reset the PHY via BMCR_RESET bit
  * @phydev: target phy_device struct
  *
@@ -2279,6 +2484,9 @@ static int phy_remove(struct device *dev)
 	phydev->state = PHY_DOWN;
 	mutex_unlock(&phydev->lock);
 
+	sfp_bus_del_upstream(phydev->sfp_bus);
+	phydev->sfp_bus = NULL;
+
 	if (phydev->drv && phydev->drv->remove) {
 		phydev->drv->remove(phydev);