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, 412 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mei/net.c b/drivers/net/wireless/intel/iwlwifi/mei/net.c
new file mode 100644
index 000000000..eac46d1a3
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mei/net.c
@@ -0,0 +1,412 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021-2022 Intel Corporation
+ */
+
+#include <uapi/linux/if_ether.h>
+#include <uapi/linux/if_arp.h>
+#include <uapi/linux/icmp.h>
+
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ieee80211.h>
+
+#include <net/cfg80211.h>
+#include <net/ip.h>
+
+#include <linux/if_arp.h>
+#include <linux/icmp.h>
+#include <linux/udp.h>
+#include <linux/ip.h>
+#include <linux/mm.h>
+
+#include "internal.h"
+#include "sap.h"
+#include "iwl-mei.h"
+
+/*
+ * Returns true if further filtering should be stopped. Only in that case
+ * pass_to_csme and rx_handler_res are set. Otherwise, next level of filters
+ * should be checked.
+ */
+static bool iwl_mei_rx_filter_eth(const struct ethhdr *ethhdr,
+				  const struct iwl_sap_oob_filters *filters,
+				  bool *pass_to_csme,
+				  rx_handler_result_t *rx_handler_res)
+{
+	const struct iwl_sap_eth_filter *filt;
+
+	/* This filter is not relevant for UCAST packet */
+	if (!is_multicast_ether_addr(ethhdr->h_dest) ||
+	    is_broadcast_ether_addr(ethhdr->h_dest))
+		return false;
+
+	for (filt = &filters->eth_filters[0];
+	     filt < &filters->eth_filters[0] + ARRAY_SIZE(filters->eth_filters);
+	     filt++) {
+		/* Assume there are no enabled filter after a disabled one */
+		if (!(filt->flags & SAP_ETH_FILTER_ENABLED))
+			break;
+
+		if (compare_ether_header(filt->mac_address, ethhdr->h_dest))
+			continue;
+
+		/* Packet needs to reach the host's stack */
+		if (filt->flags & SAP_ETH_FILTER_COPY)
+			*rx_handler_res = RX_HANDLER_PASS;
+		else
+			*rx_handler_res = RX_HANDLER_CONSUMED;
+
+		/* We have an authoritative answer, stop filtering */
+		if (filt->flags & SAP_ETH_FILTER_STOP) {
+			*pass_to_csme = true;
+			return true;
+		}
+
+		return false;
+	}
+
+	 /* MCAST frames that don't match layer 2 filters are not sent to ME */
+	*pass_to_csme  = false;
+
+	return true;
+}
+
+/*
+ * Returns true iff the frame should be passed to CSME in which case
+ * rx_handler_res is set.
+ */
+static bool iwl_mei_rx_filter_arp(struct sk_buff *skb,
+				  const struct iwl_sap_oob_filters *filters,
+				  rx_handler_result_t *rx_handler_res)
+{
+	const struct iwl_sap_ipv4_filter *filt = &filters->ipv4_filter;
+	const struct arphdr *arp;
+	const __be32 *target_ip;
+	u32 flags = le32_to_cpu(filt->flags);
+
+	if (!pskb_may_pull(skb, arp_hdr_len(skb->dev)))
+		return false;
+
+	arp = arp_hdr(skb);
+
+	/* Handle only IPv4 over ethernet ARP frames */
+	if (arp->ar_hrd != htons(ARPHRD_ETHER) ||
+	    arp->ar_pro != htons(ETH_P_IP))
+		return false;
+
+	/*
+	 * After the ARP header, we have:
+	 * src MAC address   - 6 bytes
+	 * src IP address    - 4 bytes
+	 * target MAC addess - 6 bytes
+	 */
+	target_ip = (const void *)((const u8 *)(arp + 1) +
+				   ETH_ALEN + sizeof(__be32) + ETH_ALEN);
+
+	/*
+	 * ARP request is forwarded to ME only if IP address match in the
+	 * ARP request's target ip field.
+	 */
+	if (arp->ar_op == htons(ARPOP_REQUEST) &&
+	    (filt->flags & cpu_to_le32(SAP_IPV4_FILTER_ARP_REQ_PASS)) &&
+	    (filt->ipv4_addr == 0 || filt->ipv4_addr == *target_ip)) {
+		if (flags & SAP_IPV4_FILTER_ARP_REQ_COPY)
+			*rx_handler_res = RX_HANDLER_PASS;
+		else
+			*rx_handler_res = RX_HANDLER_CONSUMED;
+
+		return true;
+	}
+
+	/* ARP reply is always forwarded to ME regardless of the IP */
+	if (flags & SAP_IPV4_FILTER_ARP_RESP_PASS &&
+	    arp->ar_op == htons(ARPOP_REPLY)) {
+		if (flags & SAP_IPV4_FILTER_ARP_RESP_COPY)
+			*rx_handler_res = RX_HANDLER_PASS;
+		else
+			*rx_handler_res = RX_HANDLER_CONSUMED;
+
+		return true;
+	}
+
+	return false;
+}
+
+static bool
+iwl_mei_rx_filter_tcp_udp(struct sk_buff *skb, bool  ip_match,
+			  const struct iwl_sap_oob_filters *filters,
+			  rx_handler_result_t *rx_handler_res)
+{
+	const struct iwl_sap_flex_filter *filt;
+
+	for (filt = &filters->flex_filters[0];
+	     filt < &filters->flex_filters[0] + ARRAY_SIZE(filters->flex_filters);
+	     filt++) {
+		if (!(filt->flags & SAP_FLEX_FILTER_ENABLED))
+			break;
+
+		/*
+		 * We are required to have a match on the IP level and we didn't
+		 * have such match.
+		 */
+		if ((filt->flags &
+		     (SAP_FLEX_FILTER_IPV4 | SAP_FLEX_FILTER_IPV6)) &&
+		    !ip_match)
+			continue;
+
+		if ((filt->flags & SAP_FLEX_FILTER_UDP) &&
+		    ip_hdr(skb)->protocol != IPPROTO_UDP)
+			continue;
+
+		if ((filt->flags & SAP_FLEX_FILTER_TCP) &&
+		    ip_hdr(skb)->protocol != IPPROTO_TCP)
+			continue;
+
+		/*
+		 * We must have either a TCP header or a UDP header, both
+		 * starts with a source port and then a destination port.
+		 * Both are big endian words.
+		 * Use a UDP header and that will work for TCP as well.
+		 */
+		if ((filt->src_port && filt->src_port != udp_hdr(skb)->source) ||
+		    (filt->dst_port && filt->dst_port != udp_hdr(skb)->dest))
+			continue;
+
+		if (filt->flags & SAP_FLEX_FILTER_COPY)
+			*rx_handler_res = RX_HANDLER_PASS;
+		else
+			*rx_handler_res = RX_HANDLER_CONSUMED;
+
+		return true;
+	}
+
+	return false;
+}
+
+static bool iwl_mei_rx_filter_ipv4(struct sk_buff *skb,
+				   const struct iwl_sap_oob_filters *filters,
+				   rx_handler_result_t *rx_handler_res)
+{
+	const struct iwl_sap_ipv4_filter *filt = &filters->ipv4_filter;
+	const struct iphdr *iphdr;
+	unsigned int iphdrlen;
+	bool match;
+
+	if (!pskb_may_pull(skb, skb_network_offset(skb) + sizeof(*iphdr)) ||
+	    !pskb_may_pull(skb, skb_network_offset(skb) + ip_hdrlen(skb)))
+		return false;
+
+	iphdrlen = ip_hdrlen(skb);
+	iphdr = ip_hdr(skb);
+	match = !filters->ipv4_filter.ipv4_addr ||
+		filters->ipv4_filter.ipv4_addr == iphdr->daddr;
+
+	skb_set_transport_header(skb, skb_network_offset(skb) + iphdrlen);
+
+	switch (ip_hdr(skb)->protocol) {
+	case IPPROTO_UDP:
+	case IPPROTO_TCP:
+		/*
+		 * UDP header is shorter than TCP header and we look at the first bytes
+		 * of the header anyway (see below).
+		 * If we have a truncated TCP packet, let CSME handle this.
+		 */
+		if (!pskb_may_pull(skb, skb_transport_offset(skb) +
+				   sizeof(struct udphdr)))
+			return false;
+
+		return iwl_mei_rx_filter_tcp_udp(skb, match,
+						 filters, rx_handler_res);
+
+	case IPPROTO_ICMP: {
+		struct icmphdr *icmp;
+
+		if (!pskb_may_pull(skb, skb_transport_offset(skb) + sizeof(*icmp)))
+			return false;
+
+		icmp = icmp_hdr(skb);
+
+		/*
+		 * Don't pass echo requests to ME even if it wants it as we
+		 * want the host to answer.
+		 */
+		if ((filt->flags & cpu_to_le32(SAP_IPV4_FILTER_ICMP_PASS)) &&
+		    match && (icmp->type != ICMP_ECHO || icmp->code != 0)) {
+			if (filt->flags & cpu_to_le32(SAP_IPV4_FILTER_ICMP_COPY))
+				*rx_handler_res = RX_HANDLER_PASS;
+			else
+				*rx_handler_res = RX_HANDLER_CONSUMED;
+
+			return true;
+		}
+		break;
+		}
+	case IPPROTO_ICMPV6:
+		/* TODO: Should we have the same ICMP request logic here too? */
+		if ((filters->icmpv6_flags & cpu_to_le32(SAP_ICMPV6_FILTER_ENABLED) &&
+		     match)) {
+			if (filters->icmpv6_flags &
+			    cpu_to_le32(SAP_ICMPV6_FILTER_COPY))
+				*rx_handler_res = RX_HANDLER_PASS;
+			else
+				*rx_handler_res = RX_HANDLER_CONSUMED;
+
+			return true;
+		}
+		break;
+	default:
+		return false;
+	}
+
+	return false;
+}
+
+static bool iwl_mei_rx_filter_ipv6(struct sk_buff *skb,
+				   const struct iwl_sap_oob_filters *filters,
+				   rx_handler_result_t *rx_handler_res)
+{
+	*rx_handler_res = RX_HANDLER_PASS;
+
+	/* TODO */
+
+	return false;
+}
+
+static rx_handler_result_t
+iwl_mei_rx_pass_to_csme(struct sk_buff *skb,
+			const struct iwl_sap_oob_filters *filters,
+			bool *pass_to_csme)
+{
+	const struct ethhdr *ethhdr = (void *)skb_mac_header(skb);
+	rx_handler_result_t rx_handler_res = RX_HANDLER_PASS;
+	bool (*filt_handler)(struct sk_buff *skb,
+			     const struct iwl_sap_oob_filters *filters,
+			     rx_handler_result_t *rx_handler_res);
+
+	/*
+	 * skb->data points the IP header / ARP header and the ETH header
+	 * is in the headroom.
+	 */
+	skb_reset_network_header(skb);
+
+	/*
+	 * MCAST IP packets sent by us are received again here without
+	 * an ETH header. Drop them here.
+	 */
+	if (!skb_mac_offset(skb))
+		return RX_HANDLER_PASS;
+
+	if (skb_headroom(skb) < sizeof(*ethhdr))
+		return RX_HANDLER_PASS;
+
+	if (iwl_mei_rx_filter_eth(ethhdr, filters,
+				  pass_to_csme, &rx_handler_res))
+		return rx_handler_res;
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		filt_handler = iwl_mei_rx_filter_ipv4;
+		break;
+	case htons(ETH_P_ARP):
+		filt_handler = iwl_mei_rx_filter_arp;
+		break;
+	case htons(ETH_P_IPV6):
+		filt_handler = iwl_mei_rx_filter_ipv6;
+		break;
+	default:
+		*pass_to_csme = false;
+		return rx_handler_res;
+	}
+
+	*pass_to_csme = filt_handler(skb, filters, &rx_handler_res);
+
+	return rx_handler_res;
+}
+
+rx_handler_result_t iwl_mei_rx_filter(struct sk_buff *orig_skb,
+				      const struct iwl_sap_oob_filters *filters,
+				      bool *pass_to_csme)
+{
+	rx_handler_result_t ret;
+	struct sk_buff *skb;
+
+	ret = iwl_mei_rx_pass_to_csme(orig_skb, filters, pass_to_csme);
+
+	if (!*pass_to_csme)
+		return RX_HANDLER_PASS;
+
+	if (ret == RX_HANDLER_PASS) {
+		skb = skb_copy(orig_skb, GFP_ATOMIC);
+
+		if (!skb)
+			return RX_HANDLER_PASS;
+	} else {
+		skb = orig_skb;
+	}
+
+	/* CSME wants the MAC header as well, push it back */
+	skb_push(skb, skb->data - skb_mac_header(skb));
+
+	/*
+	 * Add the packet that CSME wants to get to the ring. Don't send the
+	 * Check Shared Area HECI message since this is not possible from the
+	 * Rx context. The caller will schedule a worker to do just that.
+	 */
+	iwl_mei_add_data_to_ring(skb, false);
+
+	/*
+	 * In case we drop the packet, don't free it, the caller will do that
+	 * for us
+	 */
+	if (ret == RX_HANDLER_PASS)
+		dev_kfree_skb(skb);
+
+	return ret;
+}
+
+#define DHCP_SERVER_PORT 67
+#define DHCP_CLIENT_PORT 68
+void iwl_mei_tx_copy_to_csme(struct sk_buff *origskb, unsigned int ivlen)
+{
+	struct ieee80211_hdr *hdr;
+	struct sk_buff *skb;
+	struct ethhdr ethhdr;
+	struct ethhdr *eth;
+
+	/* Catch DHCP packets */
+	if (origskb->protocol != htons(ETH_P_IP) ||
+	    ip_hdr(origskb)->protocol != IPPROTO_UDP ||
+	    udp_hdr(origskb)->source != htons(DHCP_CLIENT_PORT) ||
+	    udp_hdr(origskb)->dest != htons(DHCP_SERVER_PORT))
+		return;
+
+	/*
+	 * We could be a bit less aggressive here and not copy everything, but
+	 * this is very rare anyway, do don't bother much.
+	 */
+	skb = skb_copy(origskb, GFP_ATOMIC);
+	if (!skb)
+		return;
+
+	skb->protocol = origskb->protocol;
+
+	hdr = (void *)skb->data;
+
+	memcpy(ethhdr.h_dest, ieee80211_get_DA(hdr), ETH_ALEN);
+	memcpy(ethhdr.h_source, ieee80211_get_SA(hdr), ETH_ALEN);
+
+	/*
+	 * Remove the ieee80211 header + IV + SNAP but leave the ethertype
+	 * We still have enough headroom for the sap header.
+	 */
+	pskb_pull(skb, ieee80211_hdrlen(hdr->frame_control) + ivlen + 6);
+	eth = skb_push(skb, sizeof(ethhdr.h_dest) + sizeof(ethhdr.h_source));
+	memcpy(eth, &ethhdr, sizeof(ethhdr.h_dest) + sizeof(ethhdr.h_source));
+
+	iwl_mei_add_data_to_ring(skb, true);
+
+	dev_kfree_skb(skb);
+}
+EXPORT_SYMBOL_GPL(iwl_mei_tx_copy_to_csme);