Merge tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - support "prefer busy polling" NAPI operation mode, where we defer
     softirq for some time expecting applications to periodically busy
     poll

   - AF_XDP: improve efficiency by more batching and hindering the
     adjacency cache prefetcher

   - af_packet: make packet_fanout.arr size configurable up to 64K

   - tcp: optimize TCP zero copy receive in presence of partial or
     unaligned reads making zero copy a performance win for much smaller
     messages

   - XDP: add bulk APIs for returning / freeing frames

   - sched: support fragmenting IP packets as they come out of conntrack

   - net: allow virtual netdevs to forward UDP L4 and fraglist GSO skbs

  BPF:

   - BPF switch from crude rlimit-based to memcg-based memory accounting

   - BPF type format information for kernel modules and related tracing
     enhancements

   - BPF implement task local storage for BPF LSM

   - allow the FENTRY/FEXIT/RAW_TP tracing programs to use
     bpf_sk_storage

  Protocols:

   - mptcp: improve multiple xmit streams support, memory accounting and
     many smaller improvements

   - TLS: support CHACHA20-POLY1305 cipher

   - seg6: add support for SRv6 End.DT4/DT6 behavior

   - sctp: Implement RFC 6951: UDP Encapsulation of SCTP

   - ppp_generic: add ability to bridge channels directly

   - bridge: Connectivity Fault Management (CFM) support as is defined
     in IEEE 802.1Q section 12.14.

  Drivers:

   - mlx5: make use of the new auxiliary bus to organize the driver
     internals

   - mlx5: more accurate port TX timestamping support

   - mlxsw:
      - improve the efficiency of offloaded next hop updates by using
        the new nexthop object API
      - support blackhole nexthops
      - support IEEE 802.1ad (Q-in-Q) bridging

   - rtw88: major bluetooth co-existance improvements

   - iwlwifi: support new 6 GHz frequency band

   - ath11k: Fast Initial Link Setup (FILS)

   - mt7915: dual band concurrent (DBDC) support

   - net: ipa: add basic support for IPA v4.5

  Refactor:

   - a few pieces of in_interrupt() cleanup work from Sebastian Andrzej
     Siewior

   - phy: add support for shared interrupts; get rid of multiple driver
     APIs and have the drivers write a full IRQ handler, slight growth
     of driver code should be compensated by the simpler API which also
     allows shared IRQs

   - add common code for handling netdev per-cpu counters

   - move TX packet re-allocation from Ethernet switch tag drivers to a
     central place

   - improve efficiency and rename nla_strlcpy

   - number of W=1 warning cleanups as we now catch those in a patchwork
     build bot

  Old code removal:

   - wan: delete the DLCI / SDLA drivers

   - wimax: move to staging

   - wifi: remove old WDS wifi bridging support"

* tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1922 commits)
  net: hns3: fix expression that is currently always true
  net: fix proc_fs init handling in af_packet and tls
  nfc: pn533: convert comma to semicolon
  af_vsock: Assign the vsock transport considering the vsock address flags
  af_vsock: Set VMADDR_FLAG_TO_HOST flag on the receive path
  vsock_addr: Check for supported flag values
  vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag
  vm_sockets: Add flags field in the vsock address data structure
  net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled
  tcp: Add logic to check for SYN w/ data in tcp_simple_retransmit
  net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context
  nfc: s3fwrn5: Release the nfc firmware
  net: vxget: clean up sparse warnings
  mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router
  mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3
  mlxsw: spectrum_router_xm: Introduce basic XM cache flushing
  mlxsw: reg: Add Router LPM Cache Enable Register
  mlxsw: reg: Add Router LPM Cache ML Delete Register
  mlxsw: spectrum_router_xm: Implement L-value tracking for M-index
  mlxsw: reg: Add XM Router M Table Register
  ...

1 files changed, 49 insertions, 16 deletions

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index a7f74b3b97af..54e0d75203da 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -48,6 +48,10 @@
 #define	KSZPHY_INTCS_LINK_UP			BIT(8)
 #define	KSZPHY_INTCS_ALL			(KSZPHY_INTCS_LINK_UP |\
 						KSZPHY_INTCS_LINK_DOWN)
+#define	KSZPHY_INTCS_LINK_DOWN_STATUS		BIT(2)
+#define	KSZPHY_INTCS_LINK_UP_STATUS		BIT(0)
+#define	KSZPHY_INTCS_STATUS			(KSZPHY_INTCS_LINK_DOWN_STATUS |\
+						 KSZPHY_INTCS_LINK_UP_STATUS)
 
 /* PHY Control 1 */
 #define	MII_KSZPHY_CTRL_1			0x1e
@@ -158,7 +162,7 @@ static int kszphy_ack_interrupt(struct phy_device *phydev)
 static int kszphy_config_intr(struct phy_device *phydev)
 {
 	const struct kszphy_type *type = phydev->drv->driver_data;
-	int temp;
+	int temp, err;
 	u16 mask;
 
 	if (type && type->interrupt_level_mask)
@@ -174,12 +178,41 @@ static int kszphy_config_intr(struct phy_device *phydev)
 	phy_write(phydev, MII_KSZPHY_CTRL, temp);
 
 	/* enable / disable interrupts */
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = kszphy_ack_interrupt(phydev);
+		if (err)
+			return err;
+
 		temp = KSZPHY_INTCS_ALL;
-	else
+		err = phy_write(phydev, MII_KSZPHY_INTCS, temp);
+	} else {
 		temp = 0;
+		err = phy_write(phydev, MII_KSZPHY_INTCS, temp);
+		if (err)
+			return err;
+
+		err = kszphy_ack_interrupt(phydev);
+	}
+
+	return err;
+}
+
+static irqreturn_t kszphy_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read(phydev, MII_KSZPHY_INTCS);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & KSZPHY_INTCS_STATUS))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
 
-	return phy_write(phydev, MII_KSZPHY_INTCS, temp);
+	return IRQ_HANDLED;
 }
 
 static int kszphy_rmii_clk_sel(struct phy_device *phydev, bool val)
@@ -1160,8 +1193,8 @@ static struct phy_driver ksphy_driver[] = {
 	/* PHY_BASIC_FEATURES */
 	.driver_data	= &ks8737_type,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.suspend	= genphy_suspend,
 	.resume		= genphy_resume,
 }, {
@@ -1172,8 +1205,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8021_type,
 	.probe		= kszphy_probe,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1187,8 +1220,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8021_type,
 	.probe		= kszphy_probe,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1203,8 +1236,8 @@ static struct phy_driver ksphy_driver[] = {
 	.probe		= kszphy_probe,
 	.config_init	= ksz8041_config_init,
 	.config_aneg	= ksz8041_config_aneg,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1218,8 +1251,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8041_type,
 	.probe		= kszphy_probe,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1231,8 +1264,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8051_type,
 	.probe		= kszphy_probe,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1247,8 +1280,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8041_type,
 	.probe		= kszphy_probe,
 	.config_init	= kszphy_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1262,8 +1295,8 @@ static struct phy_driver ksphy_driver[] = {
 	.driver_data	= &ksz8081_type,
 	.probe		= kszphy_probe,
 	.config_init	= ksz8081_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1275,8 +1308,8 @@ static struct phy_driver ksphy_driver[] = {
 	.phy_id_mask	= MICREL_PHY_ID_MASK,
 	/* PHY_BASIC_FEATURES */
 	.config_init	= ksz8061_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.suspend	= genphy_suspend,
 	.resume		= genphy_resume,
 }, {
@@ -1288,8 +1321,8 @@ static struct phy_driver ksphy_driver[] = {
 	.probe		= kszphy_probe,
 	.get_features	= ksz9031_get_features,
 	.config_init	= ksz9021_config_init,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1307,8 +1340,8 @@ static struct phy_driver ksphy_driver[] = {
 	.config_init	= ksz9031_config_init,
 	.soft_reset	= genphy_soft_reset,
 	.read_status	= ksz9031_read_status,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
@@ -1336,8 +1369,8 @@ static struct phy_driver ksphy_driver[] = {
 	.probe		= kszphy_probe,
 	.config_init	= ksz9131_config_init,
 	.read_status	= genphy_read_status,
-	.ack_interrupt	= kszphy_ack_interrupt,
 	.config_intr	= kszphy_config_intr,
+	.handle_interrupt = kszphy_handle_interrupt,
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,