Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextHEADmaster

Pull networking updates from Jakub Kicinski:
 "Not much excitement - a handful of large patchsets (devmem among them)
  did not make it in time.

  Core & protocols:

   - Use local_lock in addition to local_bh_disable() to protect per-CPU
     resources in networking, a step closer for local_bh_disable() not
     to act as a big lock on PREEMPT_RT

   - Use flex array for netdevice priv area, ensure its cache alignment

   - Add a sysctl knob to allow user to specify a default rto_min at
     socket init time. Bit of a big hammer but multiple companies were
     independently carrying such patch downstream so clearly it's useful

   - Support scheduling transmission of packets based on CLOCK_TAI

   - Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned
     off using cpusets

   - Support multiple L2TPv3 UDP tunnels using the same 5-tuple address

   - Allow configuration of multipath hash seed, to both allow
     synchronizing hashing of two routers, and preventing partial
     accidental sync

   - Improve TCP compliance with RFC 9293 for simultaneous connect()

   - Support sending NAT keepalives in IPsec ESP in UDP states.
     Userspace IKE daemon had to do this before, but the kernel can
     better keep track of it

   - Support sending supervision HSR frames with MAC addresses stored in
     ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled

   - Introduce IPPROTO_SMC for selecting SMC when socket is created

   - Allow UDP GSO transmit from devices with no checksum offload

   - openvswitch: add packet sampling via psample, separating the
     sampled traffic from "upcall" packets sent to user space for
     forwarding

   - nf_tables: shrink memory consumption for transaction objects

  Things we sprinkled into general kernel code:

   - Power Sequencing subsystem (used by Qualcomm Bluetooth driver for
     QCA6390)           [ Already merged separately - Linus ]

   - Add IRQ information in sysfs for auxiliary bus

   - Introduce guard definition for local_lock

   - Add aligned flavor of __cacheline_group_{begin, end}() markings for
     grouping fields in structures

  BPF:

   - Notify user space (via epoll) when a struct_ops object is getting
     detached/unregistered

   - Add new kfuncs for a generic, open-coded bits iterator

   - Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
     bpf_list_head

   - Support resilient split BTF which cuts down on duplication and
     makes BTF as compact as possible WRT BTF from modules

   - Add support for dumping kfunc prototypes from BTF which enables
     both detecting as well as dumping compilable prototypes for kfuncs

   - riscv64 BPF JIT improvements in particular to add 12-argument
     support for BPF trampolines and to utilize bpf_prog_pack for the
     latter

   - Add the capability to offload the netfilter flowtable in XDP layer
     through kfuncs

  Driver API:

   - Allow users to configure IRQ tresholds between which automatic IRQ
     moderation can choose

   - Expand Power Sourcing (PoE) status with power, class and failure
     reason. Support setting power limits

   - Track additional RSS contexts in the core, make sure configuration
     changes don't break them

   - Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated
     ESP data paths

   - Support updating firmware on SFP modules

  Tests and tooling:

   - mptcp: use net/lib.sh to manage netns

   - TCP-AO and TCP-MD5: replace debug prints used by tests with
     tracepoints

   - openvswitch: make test self-contained (don't depend on OvS CLI
     tools)

  Drivers:

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - increase the max total outstanding PTP TX packets to 4
         - add timestamping statistics support
         - implement netdev_queue_mgmt_ops
         - support new RSS context API
      - Intel (100G, ice, idpf):
         - implement FEC statistics and dumping signal quality indicators
         - support E825C products (with 56Gbps PHYs)
      - nVidia/Mellanox:
         - support HW-GRO
         - mlx4/mlx5: support per-queue statistics via netlink
         - obey the max number of EQs setting in sub-functions
      - AMD/Solarflare:
         - support new RSS context API
      - AMD/Pensando:
         - ionic: rework fix for doorbell miss to lower overhead and
           skip it on new HW
      - Wangxun:
         - txgbe: support Flow Director perfect filters

   - Ethernet NICs consumer, embedded and virtual:
      - Add driver for Tehuti Networks TN40xx chips
      - Add driver for Meta's internal NIC chips
      - Add driver for Ethernet MAC on Airoha EN7581 SoCs
      - Add driver for Renesas Ethernet-TSN devices
      - Google cloud vNIC:
         - flow steering support
      - Microsoft vNIC:
         - support page sizes other than 4KB on ARM64
      - vmware vNIC:
         - support latency measurement (update to version 9)
      - VirtIO net:
         - support for Byte Queue Limits
         - support configuring thresholds for automatic IRQ moderation
         - support for AF_XDP Rx zero-copy
      - Synopsys (stmmac):
         - support for STM32MP13 SoC
         - let platforms select the right PCS implementation
      - TI:
         - icssg-prueth: add multicast filtering support
         - icssg-prueth: enable PTP timestamping and PPS
      - Renesas:
         - ravb: improve Rx performance 30-400% by using page pool,
           theaded NAPI and timer-based IRQ coalescing
         - ravb: add MII support for R-Car V4M
      - Cadence (macb):
         - macb: add ARP support to Wake-On-LAN
      - Cortina:
         - use phylib for RX and TX pause configuration

   - Ethernet switches:
      - nVidia/Mellanox:
         - support configuration of multipath hash seed
         - report more accurate max MTU
         - use page_pool to improve Rx performance
      - MediaTek:
         - mt7530: add support for bridge port isolation
      - Qualcomm:
         - qca8k: add support for bridge port isolation
      - Microchip:
         - lan9371/2: add 100BaseTX PHY support
      - NXP:
         - vsc73xx: implement VLAN operations

   - Ethernet PHYs:
      - aquantia: enable support for aqr115c
      - aquantia: add support for PHY LEDs
      - realtek: add support for rtl8224 2.5Gbps PHY
      - xpcs: add memory-mapped device support
      - add BroadR-Reach link mode and support in Broadcom's PHY driver

   - CAN:
      - add document for ISO 15765-2 protocol support
      - mcp251xfd: workaround for erratum DS80000789E, use timestamps to
        catch when device returns incorrect FIFO status

   - WiFi:
      - mac80211/cfg80211:
         - parse Transmit Power Envelope (TPE) data in mac80211 instead
           of in drivers
         - improvements for 6 GHz regulatory flexibility
         - multi-link improvements
         - support multiple radios per wiphy
         - remove DEAUTH_NEED_MGD_TX_PREP flag
      - Intel (iwlwifi):
         - bump FW API to 91 for BZ/SC devices
         - report 64-bit radiotap timestamp
         - enable P2P low latency by default
         - handle Transmit Power Envelope (TPE) advertised by AP
         - remove support for older FW for new devices
         - fast resume (keeping the device configured)
         - mvm: re-enable Multi-Link Operation (MLO)
         - aggregation (A-MSDU) optimizations
      - MediaTek (mt76):
         - mt7925 Multi-Link Operation (MLO) support
      - Qualcomm (ath10k):
         - LED support for various chipsets
      - Qualcomm (ath12k):
         - remove unsupported Tx monitor handling
         - support channel 2 in 6 GHz band
         - support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
         - supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
           Advertisements (EMA)
         - support dynamic VLAN
         - add panic handler for resetting the firmware state
         - DebugFS support for datapath statistics
         - WCN7850: support for Wake on WLAN
      - Microchip (wilc1000):
         - read MAC address during probe to make it visible to user space
         - suspend/resume improvements
      - TI (wl18xx):
         - support newer firmware versions
      - RealTek (rtw89):
         - preparation for RTL8852BE-VT support
         - Wake on WLAN support for WiFi 6 chips
         - 36-bit PCI DMA support
      - RealTek (rtlwifi):
         - RTL8192DU support
      - Broadcom (brcmfmac):
         - Management Frame Protection support (to enable WPA3)

   - Bluetooth:
      - qualcomm: use the power sequencer for QCA6390
      - btusb: mediatek: add ISO data transmission functions
      - hci_bcm4377: add BCM4388 support
      - btintel: add support for BlazarU core
      - btintel: add support for Whale Peak2
      - btnxpuart: add support for AW693 A1 chipset
      - btnxpuart: add support for IW615 chipset
      - btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591"

* tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1589 commits)
  eth: fbnic: Fix spelling mistake "tiggerring" -> "triggering"
  tcp: Replace strncpy() with strscpy()
  wifi: ath12k: fix build vs old compiler
  tcp: Don't access uninit tcp_rsk(req)->ao_keyid in tcp_create_openreq_child().
  eth: fbnic: Write the TCAM tables used for RSS control and Rx to host
  eth: fbnic: Add L2 address programming
  eth: fbnic: Add basic Rx handling
  eth: fbnic: Add basic Tx handling
  eth: fbnic: Add link detection
  eth: fbnic: Add initial messaging to notify FW of our presence
  eth: fbnic: Implement Rx queue alloc/start/stop/free
  eth: fbnic: Implement Tx queue alloc/start/stop/free
  eth: fbnic: Allocate a netdevice and napi vectors with queues
  eth: fbnic: Add FW communication mechanism
  eth: fbnic: Add message parsing for FW messages
  eth: fbnic: Add register init to set PCIe/Ethernet device config
  eth: fbnic: Allocate core device specific structures and devlink interface
  eth: fbnic: Add scaffolding for Meta's NIC driver
  PCI: Add Meta Platforms vendor ID
  net/sched: cls_flower: propagate tca[TCA_OPTIONS] to NL_REQ_ATTR_CHECK
  ...

1 files changed, 121 insertions, 8 deletions

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index 874499337132..9e42d599840d 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -43,11 +43,99 @@ static void ionic_watchdog_cb(struct timer_list *t)
 
 		work->type = IONIC_DW_TYPE_RX_MODE;
 		netdev_dbg(lif->netdev, "deferred: rx_mode\n");
-		ionic_lif_deferred_enqueue(&lif->deferred, work);
+		ionic_lif_deferred_enqueue(lif, work);
 	}
 }
 
-static void ionic_watchdog_init(struct ionic *ionic)
+static void ionic_napi_schedule_do_softirq(struct napi_struct *napi)
+{
+	local_bh_disable();
+	napi_schedule(napi);
+	local_bh_enable();
+}
+
+void ionic_doorbell_napi_work(struct work_struct *work)
+{
+	struct ionic_qcq *qcq = container_of(work, struct ionic_qcq,
+					     doorbell_napi_work);
+	unsigned long now, then, dif;
+
+	now = READ_ONCE(jiffies);
+	then = qcq->q.dbell_jiffies;
+	dif = now - then;
+
+	if (dif > qcq->q.dbell_deadline)
+		ionic_napi_schedule_do_softirq(&qcq->napi);
+}
+
+static int ionic_get_preferred_cpu(struct ionic *ionic,
+				   struct ionic_intr_info *intr)
+{
+	int cpu;
+
+	cpu = cpumask_first_and(*intr->affinity_mask, cpu_online_mask);
+	if (cpu >= nr_cpu_ids)
+		cpu = cpumask_local_spread(0, dev_to_node(ionic->dev));
+
+	return cpu;
+}
+
+static void ionic_queue_dbell_napi_work(struct ionic *ionic,
+					struct ionic_qcq *qcq)
+{
+	int cpu;
+
+	if (!(qcq->flags & IONIC_QCQ_F_INTR))
+		return;
+
+	cpu = ionic_get_preferred_cpu(ionic, &qcq->intr);
+	queue_work_on(cpu, ionic->wq, &qcq->doorbell_napi_work);
+}
+
+static void ionic_doorbell_check_dwork(struct work_struct *work)
+{
+	struct ionic *ionic = container_of(work, struct ionic,
+					   doorbell_check_dwork.work);
+	struct ionic_lif *lif = ionic->lif;
+
+	mutex_lock(&lif->queue_lock);
+
+	if (test_bit(IONIC_LIF_F_FW_STOPPING, lif->state) ||
+	    test_bit(IONIC_LIF_F_FW_RESET, lif->state)) {
+		mutex_unlock(&lif->queue_lock);
+		return;
+	}
+
+	ionic_napi_schedule_do_softirq(&lif->adminqcq->napi);
+
+	if (test_bit(IONIC_LIF_F_UP, lif->state)) {
+		int i;
+
+		for (i = 0; i < lif->nxqs; i++) {
+			ionic_queue_dbell_napi_work(ionic, lif->txqcqs[i]);
+			ionic_queue_dbell_napi_work(ionic, lif->rxqcqs[i]);
+		}
+
+		if (lif->hwstamp_txq &&
+		    lif->hwstamp_txq->flags & IONIC_QCQ_F_INTR)
+			ionic_napi_schedule_do_softirq(&lif->hwstamp_txq->napi);
+		if (lif->hwstamp_rxq &&
+		    lif->hwstamp_rxq->flags & IONIC_QCQ_F_INTR)
+			ionic_napi_schedule_do_softirq(&lif->hwstamp_rxq->napi);
+	}
+	mutex_unlock(&lif->queue_lock);
+
+	ionic_queue_doorbell_check(ionic, IONIC_NAPI_DEADLINE);
+}
+
+bool ionic_doorbell_wa(struct ionic *ionic)
+{
+	u8 asic_type = ionic->idev.dev_info.asic_type;
+
+	return !asic_type || asic_type == IONIC_ASIC_TYPE_ELBA;
+}
+
+static int ionic_watchdog_init(struct ionic *ionic)
 {
 	struct ionic_dev *idev = &ionic->idev;
 
@@ -63,6 +151,31 @@ static void ionic_watchdog_init(struct ionic *ionic)
 	idev->fw_status_ready = true;
 	idev->fw_generation = IONIC_FW_STS_F_GENERATION &
 			      ioread8(&idev->dev_info_regs->fw_status);
+
+	ionic->wq = alloc_workqueue("%s-wq", WQ_UNBOUND, 0,
+				    dev_name(ionic->dev));
+	if (!ionic->wq) {
+		dev_err(ionic->dev, "alloc_workqueue failed");
+		return -ENOMEM;
+	}
+
+	if (ionic_doorbell_wa(ionic))
+		INIT_DELAYED_WORK(&ionic->doorbell_check_dwork,
+				  ionic_doorbell_check_dwork);
+
+	return 0;
+}
+
+void ionic_queue_doorbell_check(struct ionic *ionic, int delay)
+{
+	int cpu;
+
+	if (!ionic->lif->doorbell_wa)
+		return;
+
+	cpu = ionic_get_preferred_cpu(ionic, &ionic->lif->adminqcq->intr);
+	queue_delayed_work_on(cpu, ionic->wq, &ionic->doorbell_check_dwork,
+			      delay);
 }
 
 void ionic_init_devinfo(struct ionic *ionic)
@@ -94,6 +207,7 @@ int ionic_dev_setup(struct ionic *ionic)
 	struct device *dev = ionic->dev;
 	int size;
 	u32 sig;
+	int err;
 
 	/* BAR0: dev_cmd and interrupts */
 	if (num_bars < 1) {
@@ -129,7 +243,9 @@ int ionic_dev_setup(struct ionic *ionic)
 		return -EFAULT;
 	}
 
-	ionic_watchdog_init(ionic);
+	err = ionic_watchdog_init(ionic);
+	if (err)
+		return err;
 
 	idev->db_pages = bar->vaddr;
 	idev->phy_db_pages = bar->bus_addr;
@@ -161,6 +277,7 @@ void ionic_dev_teardown(struct ionic *ionic)
 	idev->phy_cmb_pages = 0;
 	idev->cmb_npages = 0;
 
+	destroy_workqueue(ionic->wq);
 	mutex_destroy(&idev->cmb_inuse_lock);
 }
 
@@ -273,7 +390,7 @@ do_check_time:
 			if (work) {
 				work->type = IONIC_DW_TYPE_LIF_RESET;
 				work->fw_status = fw_status_ready;
-				ionic_lif_deferred_enqueue(&lif->deferred, work);
+				ionic_lif_deferred_enqueue(lif, work);
 			}
 		}
 	}
@@ -703,10 +820,6 @@ void ionic_q_post(struct ionic_queue *q, bool ring_doorbell)
 				 q->dbval | q->head_idx);
 
 		q->dbell_jiffies = jiffies;
-
-		if (q_to_qcq(q)->napi_qcq)
-			mod_timer(&q_to_qcq(q)->napi_qcq->napi_deadline,
-				  jiffies + IONIC_NAPI_DEADLINE);
 	}
 }