Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 670 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/7990.c b/drivers/net/ethernet/amd/7990.c
new file mode 100644
index 000000000..ef512cf89
--- /dev/null
+++ b/drivers/net/ethernet/amd/7990.c
@@ -0,0 +1,670 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * 7990.c -- LANCE ethernet IC generic routines.
+ * This is an attempt to separate out the bits of various ethernet
+ * drivers that are common because they all use the AMD 7990 LANCE
+ * (Local Area Network Controller for Ethernet) chip.
+ *
+ * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+ *
+ * Most of this stuff was obtained by looking at other LANCE drivers,
+ * in particular a2065.[ch]. The AMD C-LANCE datasheet was also helpful.
+ * NB: this was made easy by the fact that Jes Sorensen had cleaned up
+ * most of a2025 and sunlance with the aim of merging them, so the
+ * common code was pretty obvious.
+ */
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/route.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+#include <linux/pgtable.h>
+#include <asm/irq.h>
+/* Used for the temporal inet entries and routing */
+#include <linux/socket.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#ifdef CONFIG_HP300
+#include <asm/blinken.h>
+#endif
+
+#include "7990.h"
+
+#define WRITERAP(lp, x)	out_be16(lp->base + LANCE_RAP, (x))
+#define WRITERDP(lp, x)	out_be16(lp->base + LANCE_RDP, (x))
+#define READRDP(lp)	in_be16(lp->base + LANCE_RDP)
+
+#if IS_ENABLED(CONFIG_HPLANCE)
+#include "hplance.h"
+
+#undef WRITERAP
+#undef WRITERDP
+#undef READRDP
+
+#if IS_ENABLED(CONFIG_MVME147_NET)
+
+/* Lossage Factor Nine, Mr Sulu. */
+#define WRITERAP(lp, x)	(lp->writerap(lp, x))
+#define WRITERDP(lp, x)	(lp->writerdp(lp, x))
+#define READRDP(lp)	(lp->readrdp(lp))
+
+#else
+
+/* These inlines can be used if only CONFIG_HPLANCE is defined */
+static inline void WRITERAP(struct lance_private *lp, __u16 value)
+{
+	do {
+		out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static inline void WRITERDP(struct lance_private *lp, __u16 value)
+{
+	do {
+		out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static inline __u16 READRDP(struct lance_private *lp)
+{
+	__u16 value;
+	do {
+		value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+	return value;
+}
+
+#endif
+#endif /* IS_ENABLED(CONFIG_HPLANCE) */
+
+/* debugging output macros, various flavours */
+/* #define TEST_HITS */
+#ifdef UNDEF
+#define PRINT_RINGS() \
+do { \
+	int t; \
+	for (t = 0; t < RX_RING_SIZE; t++) { \
+		printk("R%d: @(%02X %04X) len %04X, mblen %04X, bits %02X\n", \
+		       t, ib->brx_ring[t].rmd1_hadr, ib->brx_ring[t].rmd0, \
+		       ib->brx_ring[t].length, \
+		       ib->brx_ring[t].mblength, ib->brx_ring[t].rmd1_bits); \
+	} \
+	for (t = 0; t < TX_RING_SIZE; t++) { \
+		printk("T%d: @(%02X %04X) len %04X, misc %04X, bits %02X\n", \
+		       t, ib->btx_ring[t].tmd1_hadr, ib->btx_ring[t].tmd0, \
+		       ib->btx_ring[t].length, \
+		       ib->btx_ring[t].misc, ib->btx_ring[t].tmd1_bits); \
+	} \
+} while (0)
+#else
+#define PRINT_RINGS()
+#endif
+
+/* Load the CSR registers. The LANCE has to be STOPped when we do this! */
+static void load_csrs(struct lance_private *lp)
+{
+	volatile struct lance_init_block *aib = lp->lance_init_block;
+	int leptr;
+
+	leptr = LANCE_ADDR(aib);
+
+	WRITERAP(lp, LE_CSR1);                    /* load address of init block */
+	WRITERDP(lp, leptr & 0xFFFF);
+	WRITERAP(lp, LE_CSR2);
+	WRITERDP(lp, leptr >> 16);
+	WRITERAP(lp, LE_CSR3);
+	WRITERDP(lp, lp->busmaster_regval);       /* set byteswap/ALEctrl/byte ctrl */
+
+	/* Point back to csr0 */
+	WRITERAP(lp, LE_CSR0);
+}
+
+/* #define to 0 or 1 appropriately */
+#define DEBUG_IRING 0
+/* Set up the Lance Rx and Tx rings and the init block */
+static void lance_init_ring(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
+	int leptr;
+	int i;
+
+	aib = lp->lance_init_block;
+
+	lp->rx_new = lp->tx_new = 0;
+	lp->rx_old = lp->tx_old = 0;
+
+	ib->mode = LE_MO_PROM;                             /* normal, enable Tx & Rx */
+
+	/* Copy the ethernet address to the lance init block
+	 * Notice that we do a byteswap if we're big endian.
+	 * [I think this is the right criterion; at least, sunlance,
+	 * a2065 and atarilance do the byteswap and lance.c (PC) doesn't.
+	 * However, the datasheet says that the BSWAP bit doesn't affect
+	 * the init block, so surely it should be low byte first for
+	 * everybody? Um.]
+	 * We could define the ib->physaddr as three 16bit values and
+	 * use (addr[1] << 8) | addr[0] & co, but this is more efficient.
+	 */
+#ifdef __BIG_ENDIAN
+	ib->phys_addr[0] = dev->dev_addr[1];
+	ib->phys_addr[1] = dev->dev_addr[0];
+	ib->phys_addr[2] = dev->dev_addr[3];
+	ib->phys_addr[3] = dev->dev_addr[2];
+	ib->phys_addr[4] = dev->dev_addr[5];
+	ib->phys_addr[5] = dev->dev_addr[4];
+#else
+	for (i = 0; i < 6; i++)
+	       ib->phys_addr[i] = dev->dev_addr[i];
+#endif
+
+	if (DEBUG_IRING)
+		printk("TX rings:\n");
+
+	lp->tx_full = 0;
+	/* Setup the Tx ring entries */
+	for (i = 0; i < (1 << lp->lance_log_tx_bufs); i++) {
+		leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
+		ib->btx_ring[i].tmd0      = leptr;
+		ib->btx_ring[i].tmd1_hadr = leptr >> 16;
+		ib->btx_ring[i].tmd1_bits = 0;
+		ib->btx_ring[i].length    = 0xf000; /* The ones required by tmd2 */
+		ib->btx_ring[i].misc      = 0;
+		if (DEBUG_IRING)
+			printk("%d: 0x%8.8x\n", i, leptr);
+	}
+
+	/* Setup the Rx ring entries */
+	if (DEBUG_IRING)
+		printk("RX rings:\n");
+	for (i = 0; i < (1 << lp->lance_log_rx_bufs); i++) {
+		leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
+
+		ib->brx_ring[i].rmd0      = leptr;
+		ib->brx_ring[i].rmd1_hadr = leptr >> 16;
+		ib->brx_ring[i].rmd1_bits = LE_R1_OWN;
+		/* 0xf000 == bits that must be one (reserved, presumably) */
+		ib->brx_ring[i].length    = -RX_BUFF_SIZE | 0xf000;
+		ib->brx_ring[i].mblength  = 0;
+		if (DEBUG_IRING)
+			printk("%d: 0x%8.8x\n", i, leptr);
+	}
+
+	/* Setup the initialization block */
+
+	/* Setup rx descriptor pointer */
+	leptr = LANCE_ADDR(&aib->brx_ring);
+	ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
+	ib->rx_ptr = leptr;
+	if (DEBUG_IRING)
+		printk("RX ptr: %8.8x\n", leptr);
+
+	/* Setup tx descriptor pointer */
+	leptr = LANCE_ADDR(&aib->btx_ring);
+	ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
+	ib->tx_ptr = leptr;
+	if (DEBUG_IRING)
+		printk("TX ptr: %8.8x\n", leptr);
+
+	/* Clear the multicast filter */
+	ib->filter[0] = 0;
+	ib->filter[1] = 0;
+	PRINT_RINGS();
+}
+
+/* LANCE must be STOPped before we do this, too... */
+static int init_restart_lance(struct lance_private *lp)
+{
+	int i;
+
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_INIT);
+
+	/* Need a hook here for sunlance ledma stuff */
+
+	/* Wait for the lance to complete initialization */
+	for (i = 0; (i < 100) && !(READRDP(lp) & (LE_C0_ERR | LE_C0_IDON)); i++)
+		barrier();
+	if ((i == 100) || (READRDP(lp) & LE_C0_ERR)) {
+		printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", i, READRDP(lp));
+		return -1;
+	}
+
+	/* Clear IDON by writing a "1", enable interrupts and start lance */
+	WRITERDP(lp, LE_C0_IDON);
+	WRITERDP(lp, LE_C0_INEA | LE_C0_STRT);
+
+	return 0;
+}
+
+static int lance_reset(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	int status;
+
+	/* Stop the lance */
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_STOP);
+
+	load_csrs(lp);
+	lance_init_ring(dev);
+	netif_trans_update(dev); /* prevent tx timeout */
+	status = init_restart_lance(lp);
+#ifdef DEBUG_DRIVER
+	printk("Lance restart=%d\n", status);
+#endif
+	return status;
+}
+
+static int lance_rx(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_rx_desc *rd;
+	unsigned char bits;
+#ifdef TEST_HITS
+	int i;
+#endif
+
+#ifdef TEST_HITS
+	printk("[");
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		if (i == lp->rx_new)
+			printk("%s",
+			       ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "_" : "X");
+		else
+			printk("%s",
+			      ib->brx_ring[i].rmd1_bits & LE_R1_OWN ? "." : "1");
+	}
+	printk("]");
+#endif
+#ifdef CONFIG_HP300
+	blinken_leds(0x40, 0);
+#endif
+	WRITERDP(lp, LE_C0_RINT | LE_C0_INEA);     /* ack Rx int, reenable ints */
+	for (rd = &ib->brx_ring[lp->rx_new];     /* For each Rx ring we own... */
+	     !((bits = rd->rmd1_bits) & LE_R1_OWN);
+	     rd = &ib->brx_ring[lp->rx_new]) {
+
+		/* We got an incomplete frame? */
+		if ((bits & LE_R1_POK) != LE_R1_POK) {
+			dev->stats.rx_over_errors++;
+			dev->stats.rx_errors++;
+			continue;
+		} else if (bits & LE_R1_ERR) {
+			/* Count only the end frame as a rx error,
+			 * not the beginning
+			 */
+			if (bits & LE_R1_BUF)
+				dev->stats.rx_fifo_errors++;
+			if (bits & LE_R1_CRC)
+				dev->stats.rx_crc_errors++;
+			if (bits & LE_R1_OFL)
+				dev->stats.rx_over_errors++;
+			if (bits & LE_R1_FRA)
+				dev->stats.rx_frame_errors++;
+			if (bits & LE_R1_EOP)
+				dev->stats.rx_errors++;
+		} else {
+			int len = (rd->mblength & 0xfff) - 4;
+			struct sk_buff *skb = netdev_alloc_skb(dev, len + 2);
+
+			if (!skb) {
+				dev->stats.rx_dropped++;
+				rd->mblength = 0;
+				rd->rmd1_bits = LE_R1_OWN;
+				lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+				return 0;
+			}
+
+			skb_reserve(skb, 2);           /* 16 byte align */
+			skb_put(skb, len);             /* make room */
+			skb_copy_to_linear_data(skb,
+					 (unsigned char *)&(ib->rx_buf[lp->rx_new][0]),
+					 len);
+			skb->protocol = eth_type_trans(skb, dev);
+			netif_rx(skb);
+			dev->stats.rx_packets++;
+			dev->stats.rx_bytes += len;
+		}
+
+		/* Return the packet to the pool */
+		rd->mblength = 0;
+		rd->rmd1_bits = LE_R1_OWN;
+		lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+	}
+	return 0;
+}
+
+static int lance_tx(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_tx_desc *td;
+	int i, j;
+	int status;
+
+#ifdef CONFIG_HP300
+	blinken_leds(0x80, 0);
+#endif
+	/* csr0 is 2f3 */
+	WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
+	/* csr0 is 73 */
+
+	j = lp->tx_old;
+	for (i = j; i != lp->tx_new; i = j) {
+		td = &ib->btx_ring[i];
+
+		/* If we hit a packet not owned by us, stop */
+		if (td->tmd1_bits & LE_T1_OWN)
+			break;
+
+		if (td->tmd1_bits & LE_T1_ERR) {
+			status = td->misc;
+
+			dev->stats.tx_errors++;
+			if (status & LE_T3_RTY)
+				dev->stats.tx_aborted_errors++;
+			if (status & LE_T3_LCOL)
+				dev->stats.tx_window_errors++;
+
+			if (status & LE_T3_CLOS) {
+				dev->stats.tx_carrier_errors++;
+				if (lp->auto_select) {
+					lp->tpe = 1 - lp->tpe;
+					printk("%s: Carrier Lost, trying %s\n",
+					       dev->name,
+					       lp->tpe ? "TPE" : "AUI");
+					/* Stop the lance */
+					WRITERAP(lp, LE_CSR0);
+					WRITERDP(lp, LE_C0_STOP);
+					lance_init_ring(dev);
+					load_csrs(lp);
+					init_restart_lance(lp);
+					return 0;
+				}
+			}
+
+			/* buffer errors and underflows turn off the transmitter */
+			/* Restart the adapter */
+			if (status & (LE_T3_BUF|LE_T3_UFL)) {
+				dev->stats.tx_fifo_errors++;
+
+				printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
+				       dev->name);
+				/* Stop the lance */
+				WRITERAP(lp, LE_CSR0);
+				WRITERDP(lp, LE_C0_STOP);
+				lance_init_ring(dev);
+				load_csrs(lp);
+				init_restart_lance(lp);
+				return 0;
+			}
+		} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
+			/*
+			 * So we don't count the packet more than once.
+			 */
+			td->tmd1_bits &= ~(LE_T1_POK);
+
+			/* One collision before packet was sent. */
+			if (td->tmd1_bits & LE_T1_EONE)
+				dev->stats.collisions++;
+
+			/* More than one collision, be optimistic. */
+			if (td->tmd1_bits & LE_T1_EMORE)
+				dev->stats.collisions += 2;
+
+			dev->stats.tx_packets++;
+		}
+
+		j = (j + 1) & lp->tx_ring_mod_mask;
+	}
+	lp->tx_old = j;
+	WRITERDP(lp, LE_C0_TINT | LE_C0_INEA);
+	return 0;
+}
+
+static irqreturn_t
+lance_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = (struct net_device *)dev_id;
+	struct lance_private *lp = netdev_priv(dev);
+	int csr0;
+
+	spin_lock(&lp->devlock);
+
+	WRITERAP(lp, LE_CSR0);              /* LANCE Controller Status */
+	csr0 = READRDP(lp);
+
+	PRINT_RINGS();
+
+	if (!(csr0 & LE_C0_INTR)) {     /* Check if any interrupt has */
+		spin_unlock(&lp->devlock);
+		return IRQ_NONE;        /* been generated by the Lance. */
+	}
+
+	/* Acknowledge all the interrupt sources ASAP */
+	WRITERDP(lp, csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|LE_C0_INIT));
+
+	if ((csr0 & LE_C0_ERR)) {
+		/* Clear the error condition */
+		WRITERDP(lp, LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA);
+	}
+
+	if (csr0 & LE_C0_RINT)
+		lance_rx(dev);
+
+	if (csr0 & LE_C0_TINT)
+		lance_tx(dev);
+
+	/* Log misc errors. */
+	if (csr0 & LE_C0_BABL)
+		dev->stats.tx_errors++;       /* Tx babble. */
+	if (csr0 & LE_C0_MISS)
+		dev->stats.rx_errors++;       /* Missed a Rx frame. */
+	if (csr0 & LE_C0_MERR) {
+		printk("%s: Bus master arbitration failure, status %4.4x.\n",
+		       dev->name, csr0);
+		/* Restart the chip. */
+		WRITERDP(lp, LE_C0_STRT);
+	}
+
+	if (lp->tx_full && netif_queue_stopped(dev) && (TX_BUFFS_AVAIL >= 0)) {
+		lp->tx_full = 0;
+		netif_wake_queue(dev);
+	}
+
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|LE_C0_IDON|LE_C0_INEA);
+
+	spin_unlock(&lp->devlock);
+	return IRQ_HANDLED;
+}
+
+int lance_open(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	int res;
+
+	/* Install the Interrupt handler. Or we could shunt this out to specific drivers? */
+	if (request_irq(lp->irq, lance_interrupt, IRQF_SHARED, lp->name, dev))
+		return -EAGAIN;
+
+	res = lance_reset(dev);
+	spin_lock_init(&lp->devlock);
+	netif_start_queue(dev);
+
+	return res;
+}
+EXPORT_SYMBOL_GPL(lance_open);
+
+int lance_close(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+
+	netif_stop_queue(dev);
+
+	/* Stop the LANCE */
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_STOP);
+
+	free_irq(lp->irq, dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(lance_close);
+
+void lance_tx_timeout(struct net_device *dev, unsigned int txqueue)
+{
+	printk("lance_tx_timeout\n");
+	lance_reset(dev);
+	netif_trans_update(dev); /* prevent tx timeout */
+	netif_wake_queue(dev);
+}
+EXPORT_SYMBOL_GPL(lance_tx_timeout);
+
+netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	int entry, skblen, len;
+	static int outs;
+	unsigned long flags;
+
+	netif_stop_queue(dev);
+
+	if (!TX_BUFFS_AVAIL) {
+		dev_consume_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	skblen = skb->len;
+
+#ifdef DEBUG_DRIVER
+	/* dump the packet */
+	{
+		int i;
+
+		for (i = 0; i < 64; i++) {
+			if ((i % 16) == 0)
+				printk("\n");
+			printk("%2.2x ", skb->data[i]);
+		}
+	}
+#endif
+	len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen;
+	entry = lp->tx_new & lp->tx_ring_mod_mask;
+	ib->btx_ring[entry].length = (-len) | 0xf000;
+	ib->btx_ring[entry].misc = 0;
+
+	if (skb->len < ETH_ZLEN)
+		memset((void *)&ib->tx_buf[entry][0], 0, ETH_ZLEN);
+	skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
+
+	/* Now, give the packet to the lance */
+	ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
+	lp->tx_new = (lp->tx_new + 1) & lp->tx_ring_mod_mask;
+
+	outs++;
+	/* Kick the lance: transmit now */
+	WRITERDP(lp, LE_C0_INEA | LE_C0_TDMD);
+	dev_consume_skb_any(skb);
+
+	spin_lock_irqsave(&lp->devlock, flags);
+	if (TX_BUFFS_AVAIL)
+		netif_start_queue(dev);
+	else
+		lp->tx_full = 1;
+	spin_unlock_irqrestore(&lp->devlock, flags);
+
+	return NETDEV_TX_OK;
+}
+EXPORT_SYMBOL_GPL(lance_start_xmit);
+
+/* taken from the depca driver via a2065.c */
+static void lance_load_multicast(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile u16 *mcast_table = (u16 *)&ib->filter;
+	struct netdev_hw_addr *ha;
+	u32 crc;
+
+	/* set all multicast bits */
+	if (dev->flags & IFF_ALLMULTI) {
+		ib->filter[0] = 0xffffffff;
+		ib->filter[1] = 0xffffffff;
+		return;
+	}
+	/* clear the multicast filter */
+	ib->filter[0] = 0;
+	ib->filter[1] = 0;
+
+	/* Add addresses */
+	netdev_for_each_mc_addr(ha, dev) {
+		crc = ether_crc_le(6, ha->addr);
+		crc = crc >> 26;
+		mcast_table[crc >> 4] |= 1 << (crc & 0xf);
+	}
+}
+
+
+void lance_set_multicast(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	int stopped;
+
+	stopped = netif_queue_stopped(dev);
+	if (!stopped)
+		netif_stop_queue(dev);
+
+	while (lp->tx_old != lp->tx_new)
+		schedule();
+
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_STOP);
+	lance_init_ring(dev);
+
+	if (dev->flags & IFF_PROMISC) {
+		ib->mode |= LE_MO_PROM;
+	} else {
+		ib->mode &= ~LE_MO_PROM;
+		lance_load_multicast(dev);
+	}
+	load_csrs(lp);
+	init_restart_lance(lp);
+
+	if (!stopped)
+		netif_start_queue(dev);
+}
+EXPORT_SYMBOL_GPL(lance_set_multicast);
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void lance_poll(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+
+	spin_lock(&lp->devlock);
+	WRITERAP(lp, LE_CSR0);
+	WRITERDP(lp, LE_C0_STRT);
+	spin_unlock(&lp->devlock);
+	lance_interrupt(dev->irq, dev);
+}
+EXPORT_SYMBOL_GPL(lance_poll);
+#endif
+
+MODULE_LICENSE("GPL");