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, 650 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c
new file mode 100644
index 000000000..7a65d427a
--- /dev/null
+++ b/drivers/pci/hotplug/cpqphp_nvram.c
@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Compaq Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * Send feedback to <greg@kroah.com>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
+#include <linux/uaccess.h>
+#include "cpqphp.h"
+#include "cpqphp_nvram.h"
+
+
+#define ROM_INT15_PHY_ADDR		0x0FF859
+#define READ_EV				0xD8A4
+#define WRITE_EV			0xD8A5
+
+struct register_foo {
+	union {
+		unsigned long lword;		/* eax */
+		unsigned short word;		/* ax */
+
+		struct {
+			unsigned char low;	/* al */
+			unsigned char high;	/* ah */
+		} byte;
+	} data;
+
+	unsigned char opcode;	/* see below */
+	unsigned long length;	/* if the reg. is a pointer, how much data */
+} __attribute__ ((packed));
+
+struct all_reg {
+	struct register_foo eax_reg;
+	struct register_foo ebx_reg;
+	struct register_foo ecx_reg;
+	struct register_foo edx_reg;
+	struct register_foo edi_reg;
+	struct register_foo esi_reg;
+	struct register_foo eflags_reg;
+} __attribute__ ((packed));
+
+
+struct ev_hrt_header {
+	u8 Version;
+	u8 num_of_ctrl;
+	u8 next;
+};
+
+struct ev_hrt_ctrl {
+	u8 bus;
+	u8 device;
+	u8 function;
+	u8 mem_avail;
+	u8 p_mem_avail;
+	u8 io_avail;
+	u8 bus_avail;
+	u8 next;
+};
+
+
+static u8 evbuffer_init;
+static u8 evbuffer_length;
+static u8 evbuffer[1024];
+
+static void __iomem *compaq_int15_entry_point;
+
+/* lock for ordering int15_bios_call() */
+static DEFINE_SPINLOCK(int15_lock);
+
+
+/* This is a series of function that deals with
+ * setting & getting the hotplug resource table in some environment variable.
+ */
+
+/*
+ * We really shouldn't be doing this unless there is a _very_ good reason to!!!
+ * greg k-h
+ */
+
+
+static u32 add_byte(u32 **p_buffer, u8 value, u32 *used, u32 *avail)
+{
+	u8 **tByte;
+
+	if ((*used + 1) > *avail)
+		return(1);
+
+	*((u8 *)*p_buffer) = value;
+	tByte = (u8 **)p_buffer;
+	(*tByte)++;
+	*used += 1;
+	return(0);
+}
+
+
+static u32 add_dword(u32 **p_buffer, u32 value, u32 *used, u32 *avail)
+{
+	if ((*used + 4) > *avail)
+		return(1);
+
+	**p_buffer = value;
+	(*p_buffer)++;
+	*used += 4;
+	return(0);
+}
+
+
+/*
+ * check_for_compaq_ROM
+ *
+ * this routine verifies that the ROM OEM string is 'COMPAQ'
+ *
+ * returns 0 for non-Compaq ROM, 1 for Compaq ROM
+ */
+static int check_for_compaq_ROM(void __iomem *rom_start)
+{
+	u8 temp1, temp2, temp3, temp4, temp5, temp6;
+	int result = 0;
+
+	temp1 = readb(rom_start + 0xffea + 0);
+	temp2 = readb(rom_start + 0xffea + 1);
+	temp3 = readb(rom_start + 0xffea + 2);
+	temp4 = readb(rom_start + 0xffea + 3);
+	temp5 = readb(rom_start + 0xffea + 4);
+	temp6 = readb(rom_start + 0xffea + 5);
+	if ((temp1 == 'C') &&
+	    (temp2 == 'O') &&
+	    (temp3 == 'M') &&
+	    (temp4 == 'P') &&
+	    (temp5 == 'A') &&
+	    (temp6 == 'Q')) {
+		result = 1;
+	}
+	dbg("%s - returned %d\n", __func__, result);
+	return result;
+}
+
+
+static u32 access_EV(u16 operation, u8 *ev_name, u8 *buffer, u32 *buf_size)
+{
+	unsigned long flags;
+	int op = operation;
+	int ret_val;
+
+	if (!compaq_int15_entry_point)
+		return -ENODEV;
+
+	spin_lock_irqsave(&int15_lock, flags);
+	__asm__ (
+		"xorl   %%ebx,%%ebx\n" \
+		"xorl    %%edx,%%edx\n" \
+		"pushf\n" \
+		"push %%cs\n" \
+		"cli\n" \
+		"call *%6\n"
+		: "=c" (*buf_size), "=a" (ret_val)
+		: "a" (op), "c" (*buf_size), "S" (ev_name),
+		"D" (buffer), "m" (compaq_int15_entry_point)
+		: "%ebx", "%edx");
+	spin_unlock_irqrestore(&int15_lock, flags);
+
+	return((ret_val & 0xFF00) >> 8);
+}
+
+
+/*
+ * load_HRT
+ *
+ * Read the hot plug Resource Table from NVRAM
+ */
+static int load_HRT(void __iomem *rom_start)
+{
+	u32 available;
+	u32 temp_dword;
+	u8 temp_byte = 0xFF;
+	u32 rc;
+
+	if (!check_for_compaq_ROM(rom_start))
+		return -ENODEV;
+
+	available = 1024;
+
+	/* Now load the EV */
+	temp_dword = available;
+
+	rc = access_EV(READ_EV, "CQTHPS", evbuffer, &temp_dword);
+
+	evbuffer_length = temp_dword;
+
+	/* We're maintaining the resource lists so write FF to invalidate old
+	 * info
+	 */
+	temp_dword = 1;
+
+	rc = access_EV(WRITE_EV, "CQTHPS", &temp_byte, &temp_dword);
+
+	return rc;
+}
+
+
+/*
+ * store_HRT
+ *
+ * Save the hot plug Resource Table in NVRAM
+ */
+static u32 store_HRT(void __iomem *rom_start)
+{
+	u32 *buffer;
+	u32 *pFill;
+	u32 usedbytes;
+	u32 available;
+	u32 temp_dword;
+	u32 rc;
+	u8 loop;
+	u8 numCtrl = 0;
+	struct controller *ctrl;
+	struct pci_resource *resNode;
+	struct ev_hrt_header *p_EV_header;
+	struct ev_hrt_ctrl *p_ev_ctrl;
+
+	available = 1024;
+
+	if (!check_for_compaq_ROM(rom_start))
+		return(1);
+
+	buffer = (u32 *) evbuffer;
+
+	if (!buffer)
+		return(1);
+
+	pFill = buffer;
+	usedbytes = 0;
+
+	p_EV_header = (struct ev_hrt_header *) pFill;
+
+	ctrl = cpqhp_ctrl_list;
+
+	/* The revision of this structure */
+	rc = add_byte(&pFill, 1 + ctrl->push_flag, &usedbytes, &available);
+	if (rc)
+		return(rc);
+
+	/* The number of controllers */
+	rc = add_byte(&pFill, 1, &usedbytes, &available);
+	if (rc)
+		return(rc);
+
+	while (ctrl) {
+		p_ev_ctrl = (struct ev_hrt_ctrl *) pFill;
+
+		numCtrl++;
+
+		/* The bus number */
+		rc = add_byte(&pFill, ctrl->bus, &usedbytes, &available);
+		if (rc)
+			return(rc);
+
+		/* The device Number */
+		rc = add_byte(&pFill, PCI_SLOT(ctrl->pci_dev->devfn), &usedbytes, &available);
+		if (rc)
+			return(rc);
+
+		/* The function Number */
+		rc = add_byte(&pFill, PCI_FUNC(ctrl->pci_dev->devfn), &usedbytes, &available);
+		if (rc)
+			return(rc);
+
+		/* Skip the number of available entries */
+		rc = add_dword(&pFill, 0, &usedbytes, &available);
+		if (rc)
+			return(rc);
+
+		/* Figure out memory Available */
+
+		resNode = ctrl->mem_head;
+
+		loop = 0;
+
+		while (resNode) {
+			loop++;
+
+			/* base */
+			rc = add_dword(&pFill, resNode->base, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			/* length */
+			rc = add_dword(&pFill, resNode->length, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			resNode = resNode->next;
+		}
+
+		/* Fill in the number of entries */
+		p_ev_ctrl->mem_avail = loop;
+
+		/* Figure out prefetchable memory Available */
+
+		resNode = ctrl->p_mem_head;
+
+		loop = 0;
+
+		while (resNode) {
+			loop++;
+
+			/* base */
+			rc = add_dword(&pFill, resNode->base, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			/* length */
+			rc = add_dword(&pFill, resNode->length, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			resNode = resNode->next;
+		}
+
+		/* Fill in the number of entries */
+		p_ev_ctrl->p_mem_avail = loop;
+
+		/* Figure out IO Available */
+
+		resNode = ctrl->io_head;
+
+		loop = 0;
+
+		while (resNode) {
+			loop++;
+
+			/* base */
+			rc = add_dword(&pFill, resNode->base, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			/* length */
+			rc = add_dword(&pFill, resNode->length, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			resNode = resNode->next;
+		}
+
+		/* Fill in the number of entries */
+		p_ev_ctrl->io_avail = loop;
+
+		/* Figure out bus Available */
+
+		resNode = ctrl->bus_head;
+
+		loop = 0;
+
+		while (resNode) {
+			loop++;
+
+			/* base */
+			rc = add_dword(&pFill, resNode->base, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			/* length */
+			rc = add_dword(&pFill, resNode->length, &usedbytes, &available);
+			if (rc)
+				return(rc);
+
+			resNode = resNode->next;
+		}
+
+		/* Fill in the number of entries */
+		p_ev_ctrl->bus_avail = loop;
+
+		ctrl = ctrl->next;
+	}
+
+	p_EV_header->num_of_ctrl = numCtrl;
+
+	/* Now store the EV */
+
+	temp_dword = usedbytes;
+
+	rc = access_EV(WRITE_EV, "CQTHPS", (u8 *) buffer, &temp_dword);
+
+	dbg("usedbytes = 0x%x, length = 0x%x\n", usedbytes, temp_dword);
+
+	evbuffer_length = temp_dword;
+
+	if (rc) {
+		err(msg_unable_to_save);
+		return(1);
+	}
+
+	return(0);
+}
+
+
+void compaq_nvram_init(void __iomem *rom_start)
+{
+	if (rom_start)
+		compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR);
+
+	dbg("int15 entry  = %p\n", compaq_int15_entry_point);
+}
+
+
+int compaq_nvram_load(void __iomem *rom_start, struct controller *ctrl)
+{
+	u8 bus, device, function;
+	u8 nummem, numpmem, numio, numbus;
+	u32 rc;
+	u8 *p_byte;
+	struct pci_resource *mem_node;
+	struct pci_resource *p_mem_node;
+	struct pci_resource *io_node;
+	struct pci_resource *bus_node;
+	struct ev_hrt_ctrl *p_ev_ctrl;
+	struct ev_hrt_header *p_EV_header;
+
+	if (!evbuffer_init) {
+		/* Read the resource list information in from NVRAM */
+		if (load_HRT(rom_start))
+			memset(evbuffer, 0, 1024);
+
+		evbuffer_init = 1;
+	}
+
+	/* If we saved information in NVRAM, use it now */
+	p_EV_header = (struct ev_hrt_header *) evbuffer;
+
+	/* The following code is for systems where version 1.0 of this
+	 * driver has been loaded, but doesn't support the hardware.
+	 * In that case, the driver would incorrectly store something
+	 * in NVRAM.
+	 */
+	if ((p_EV_header->Version == 2) ||
+	    ((p_EV_header->Version == 1) && !ctrl->push_flag)) {
+		p_byte = &(p_EV_header->next);
+
+		p_ev_ctrl = (struct ev_hrt_ctrl *) &(p_EV_header->next);
+
+		p_byte += 3;
+
+		if (p_byte > ((u8 *)p_EV_header + evbuffer_length))
+			return 2;
+
+		bus = p_ev_ctrl->bus;
+		device = p_ev_ctrl->device;
+		function = p_ev_ctrl->function;
+
+		while ((bus != ctrl->bus) ||
+		       (device != PCI_SLOT(ctrl->pci_dev->devfn)) ||
+		       (function != PCI_FUNC(ctrl->pci_dev->devfn))) {
+			nummem = p_ev_ctrl->mem_avail;
+			numpmem = p_ev_ctrl->p_mem_avail;
+			numio = p_ev_ctrl->io_avail;
+			numbus = p_ev_ctrl->bus_avail;
+
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length))
+				return 2;
+
+			/* Skip forward to the next entry */
+			p_byte += (nummem + numpmem + numio + numbus) * 8;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length))
+				return 2;
+
+			p_ev_ctrl = (struct ev_hrt_ctrl *) p_byte;
+
+			p_byte += 3;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length))
+				return 2;
+
+			bus = p_ev_ctrl->bus;
+			device = p_ev_ctrl->device;
+			function = p_ev_ctrl->function;
+		}
+
+		nummem = p_ev_ctrl->mem_avail;
+		numpmem = p_ev_ctrl->p_mem_avail;
+		numio = p_ev_ctrl->io_avail;
+		numbus = p_ev_ctrl->bus_avail;
+
+		p_byte += 4;
+
+		if (p_byte > ((u8 *)p_EV_header + evbuffer_length))
+			return 2;
+
+		while (nummem--) {
+			mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+
+			if (!mem_node)
+				break;
+
+			mem_node->base = *(u32 *)p_byte;
+			dbg("mem base = %8.8x\n", mem_node->base);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(mem_node);
+				return 2;
+			}
+
+			mem_node->length = *(u32 *)p_byte;
+			dbg("mem length = %8.8x\n", mem_node->length);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(mem_node);
+				return 2;
+			}
+
+			mem_node->next = ctrl->mem_head;
+			ctrl->mem_head = mem_node;
+		}
+
+		while (numpmem--) {
+			p_mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+
+			if (!p_mem_node)
+				break;
+
+			p_mem_node->base = *(u32 *)p_byte;
+			dbg("pre-mem base = %8.8x\n", p_mem_node->base);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(p_mem_node);
+				return 2;
+			}
+
+			p_mem_node->length = *(u32 *)p_byte;
+			dbg("pre-mem length = %8.8x\n", p_mem_node->length);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(p_mem_node);
+				return 2;
+			}
+
+			p_mem_node->next = ctrl->p_mem_head;
+			ctrl->p_mem_head = p_mem_node;
+		}
+
+		while (numio--) {
+			io_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+
+			if (!io_node)
+				break;
+
+			io_node->base = *(u32 *)p_byte;
+			dbg("io base = %8.8x\n", io_node->base);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(io_node);
+				return 2;
+			}
+
+			io_node->length = *(u32 *)p_byte;
+			dbg("io length = %8.8x\n", io_node->length);
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(io_node);
+				return 2;
+			}
+
+			io_node->next = ctrl->io_head;
+			ctrl->io_head = io_node;
+		}
+
+		while (numbus--) {
+			bus_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+
+			if (!bus_node)
+				break;
+
+			bus_node->base = *(u32 *)p_byte;
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(bus_node);
+				return 2;
+			}
+
+			bus_node->length = *(u32 *)p_byte;
+			p_byte += 4;
+
+			if (p_byte > ((u8 *)p_EV_header + evbuffer_length)) {
+				kfree(bus_node);
+				return 2;
+			}
+
+			bus_node->next = ctrl->bus_head;
+			ctrl->bus_head = bus_node;
+		}
+
+		/* If all of the following fail, we don't have any resources for
+		 * hot plug add
+		 */
+		rc = 1;
+		rc &= cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
+		rc &= cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
+		rc &= cpqhp_resource_sort_and_combine(&(ctrl->io_head));
+		rc &= cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
+
+		if (rc)
+			return(rc);
+	} else {
+		if ((evbuffer[0] != 0) && (!ctrl->push_flag))
+			return 1;
+	}
+
+	return 0;
+}
+
+
+int compaq_nvram_store(void __iomem *rom_start)
+{
+	int rc = 1;
+
+	if (rom_start == NULL)
+		return -ENODEV;
+
+	if (evbuffer_init) {
+		rc = store_HRT(rom_start);
+		if (rc)
+			err(msg_unable_to_save);
+	}
+	return rc;
+}
+