Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
 "Another merge window, another set of networking changes.  I've heard
  rumblings that the lightweight tunnels infrastructure has been voted
  networking change of the year.  But what do I know?

   1) Add conntrack support to openvswitch, from Joe Stringer.

   2) Initial support for VRF (Virtual Routing and Forwarding), which
      allows the segmentation of routing paths without using multiple
      devices.  There are some semantic kinks to work out still, but
      this is a reasonably strong foundation.  From David Ahern.

   3) Remove spinlock fro act_bpf fast path, from Alexei Starovoitov.

   4) Ignore route nexthops with a link down state in ipv6, just like
      ipv4.  From Andy Gospodarek.

   5) Remove spinlock from fast path of act_gact and act_mirred, from
      Eric Dumazet.

   6) Document the DSA layer, from Florian Fainelli.

   7) Add netconsole support to bcmgenet, systemport, and DSA.  Also
      from Florian Fainelli.

   8) Add Mellanox Switch Driver and core infrastructure, from Jiri
      Pirko.

   9) Add support for "light weight tunnels", which allow for
      encapsulation and decapsulation without bearing the overhead of a
      full blown netdevice.  From Thomas Graf, Jiri Benc, and a cast of
      others.

  10) Add Identifier Locator Addressing support for ipv6, from Tom
      Herbert.

  11) Support fragmented SKBs in iwlwifi, from Johannes Berg.

  12) Allow perf PMUs to be accessed from eBPF programs, from Kaixu Xia.

  13) Add BQL support to 3c59x driver, from Loganaden Velvindron.

  14) Stop using a zero TX queue length to mean that a device shouldn't
      have a qdisc attached, use an explicit flag instead.  From Phil
      Sutter.

  15) Use generic geneve netdevice infrastructure in openvswitch, from
      Pravin B Shelar.

  16) Add infrastructure to avoid re-forwarding a packet in software
      that was already forwarded by a hardware switch.  From Scott
      Feldman.

  17) Allow AF_PACKET fanout function to be implemented in a bpf
      program, from Willem de Bruijn"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1458 commits)
  netfilter: nf_conntrack: make nf_ct_zone_dflt built-in
  netfilter: nf_dup{4, 6}: fix build error when nf_conntrack disabled
  net: fec: clear receive interrupts before processing a packet
  ipv6: fix exthdrs offload registration in out_rt path
  xen-netback: add support for multicast control
  bgmac: Update fixed_phy_register()
  sock, diag: fix panic in sock_diag_put_filterinfo
  flow_dissector: Use 'const' where possible.
  flow_dissector: Fix function argument ordering dependency
  ixgbe: Resolve "initialized field overwritten" warnings
  ixgbe: Remove bimodal SR-IOV disabling
  ixgbe: Add support for reporting 2.5G link speed
  ixgbe: fix bounds checking in ixgbe_setup_tc for 82598
  ixgbe: support for ethtool set_rxfh
  ixgbe: Avoid needless PHY access on copper phys
  ixgbe: cleanup to use cached mask value
  ixgbe: Remove second instance of lan_id variable
  ixgbe: use kzalloc for allocating one thing
  flow: Move __get_hash_from_flowi{4,6} into flow_dissector.c
  ixgbe: Remove unused PCI bus types
  ...

1 files changed, 511 insertions, 0 deletions

diff --git a/drivers/nfc/s3fwrn5/firmware.c b/drivers/nfc/s3fwrn5/firmware.c
new file mode 100644
index 0000000..64a9025
--- /dev/null
+++ b/drivers/nfc/s3fwrn5/firmware.c
@@ -0,0 +1,511 @@
+/*
+ * NCI based driver for Samsung S3FWRN5 NFC chip
+ *
+ * Copyright (C) 2015 Samsung Electrnoics
+ * Robert Baldyga <r.baldyga@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/completion.h>
+#include <linux/firmware.h>
+#include <linux/crypto.h>
+#include <crypto/sha.h>
+
+#include "s3fwrn5.h"
+#include "firmware.h"
+
+struct s3fwrn5_fw_version {
+	__u8 major;
+	__u8 build1;
+	__u8 build2;
+	__u8 target;
+};
+
+static int s3fwrn5_fw_send_msg(struct s3fwrn5_fw_info *fw_info,
+	struct sk_buff *msg, struct sk_buff **rsp)
+{
+	struct s3fwrn5_info *info =
+		container_of(fw_info, struct s3fwrn5_info, fw_info);
+	long ret;
+
+	reinit_completion(&fw_info->completion);
+
+	ret = s3fwrn5_write(info, msg);
+	if (ret < 0)
+		return ret;
+
+	ret = wait_for_completion_interruptible_timeout(
+		&fw_info->completion, msecs_to_jiffies(1000));
+	if (ret < 0)
+		return ret;
+	else if (ret == 0)
+		return -ENXIO;
+
+	if (!fw_info->rsp)
+		return -EINVAL;
+
+	*rsp = fw_info->rsp;
+	fw_info->rsp = NULL;
+
+	return 0;
+}
+
+static int s3fwrn5_fw_prep_msg(struct s3fwrn5_fw_info *fw_info,
+	struct sk_buff **msg, u8 type, u8 code, const void *data, u16 len)
+{
+	struct s3fwrn5_fw_header hdr;
+	struct sk_buff *skb;
+
+	hdr.type = type | fw_info->parity;
+	fw_info->parity ^= 0x80;
+	hdr.code = code;
+	hdr.len = len;
+
+	skb = alloc_skb(S3FWRN5_FW_HDR_SIZE + len, GFP_KERNEL);
+	if (!skb)
+		return -ENOMEM;
+
+	memcpy(skb_put(skb, S3FWRN5_FW_HDR_SIZE), &hdr, S3FWRN5_FW_HDR_SIZE);
+	if (len)
+		memcpy(skb_put(skb, len), data, len);
+
+	*msg = skb;
+
+	return 0;
+}
+
+static int s3fwrn5_fw_get_bootinfo(struct s3fwrn5_fw_info *fw_info,
+	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
+{
+	struct sk_buff *msg, *rsp = NULL;
+	struct s3fwrn5_fw_header *hdr;
+	int ret;
+
+	/* Send GET_BOOTINFO command */
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
+		S3FWRN5_FW_CMD_GET_BOOTINFO, NULL, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	memcpy(bootinfo, rsp->data + S3FWRN5_FW_HDR_SIZE, 10);
+
+out:
+	kfree_skb(rsp);
+	return ret;
+}
+
+static int s3fwrn5_fw_enter_update_mode(struct s3fwrn5_fw_info *fw_info,
+	const void *hash_data, u16 hash_size,
+	const void *sig_data, u16 sig_size)
+{
+	struct s3fwrn5_fw_cmd_enter_updatemode args;
+	struct sk_buff *msg, *rsp = NULL;
+	struct s3fwrn5_fw_header *hdr;
+	int ret;
+
+	/* Send ENTER_UPDATE_MODE command */
+
+	args.hashcode_size = hash_size;
+	args.signature_size = sig_size;
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
+		S3FWRN5_FW_CMD_ENTER_UPDATE_MODE, &args, sizeof(args));
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
+		ret = -EPROTO;
+		goto out;
+	}
+
+	kfree_skb(rsp);
+
+	/* Send hashcode data */
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_DATA, 0,
+		hash_data, hash_size);
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
+		ret = -EPROTO;
+		goto out;
+	}
+
+	kfree_skb(rsp);
+
+	/* Send signature data */
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_DATA, 0,
+		sig_data, sig_size);
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS)
+		ret = -EPROTO;
+
+out:
+	kfree_skb(rsp);
+	return ret;
+}
+
+static int s3fwrn5_fw_update_sector(struct s3fwrn5_fw_info *fw_info,
+	u32 base_addr, const void *data)
+{
+	struct s3fwrn5_fw_cmd_update_sector args;
+	struct sk_buff *msg, *rsp = NULL;
+	struct s3fwrn5_fw_header *hdr;
+	int ret, i;
+
+	/* Send UPDATE_SECTOR command */
+
+	args.base_address = base_addr;
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
+		S3FWRN5_FW_CMD_UPDATE_SECTOR, &args, sizeof(args));
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
+		ret = -EPROTO;
+		goto err;
+	}
+
+	kfree_skb(rsp);
+
+	/* Send data split into 256-byte packets */
+
+	for (i = 0; i < 16; ++i) {
+		ret = s3fwrn5_fw_prep_msg(fw_info, &msg,
+			S3FWRN5_FW_MSG_DATA, 0, data+256*i, 256);
+		if (ret < 0)
+			break;
+
+		ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+		kfree_skb(msg);
+		if (ret < 0)
+			break;
+
+		hdr = (struct s3fwrn5_fw_header *) rsp->data;
+		if (hdr->code != S3FWRN5_FW_RET_SUCCESS) {
+			ret = -EPROTO;
+			goto err;
+		}
+
+		kfree_skb(rsp);
+	}
+
+	return ret;
+
+err:
+	kfree_skb(rsp);
+	return ret;
+}
+
+static int s3fwrn5_fw_complete_update_mode(struct s3fwrn5_fw_info *fw_info)
+{
+	struct sk_buff *msg, *rsp = NULL;
+	struct s3fwrn5_fw_header *hdr;
+	int ret;
+
+	/* Send COMPLETE_UPDATE_MODE command */
+
+	ret = s3fwrn5_fw_prep_msg(fw_info, &msg, S3FWRN5_FW_MSG_CMD,
+		S3FWRN5_FW_CMD_COMPLETE_UPDATE_MODE, NULL, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = s3fwrn5_fw_send_msg(fw_info, msg, &rsp);
+	kfree_skb(msg);
+	if (ret < 0)
+		return ret;
+
+	hdr = (struct s3fwrn5_fw_header *) rsp->data;
+	if (hdr->code != S3FWRN5_FW_RET_SUCCESS)
+		ret = -EPROTO;
+
+	kfree_skb(rsp);
+
+	return ret;
+}
+
+/*
+ * Firmware header stucture:
+ *
+ * 0x00 - 0x0B : Date and time string (w/o NUL termination)
+ * 0x10 - 0x13 : Firmware version
+ * 0x14 - 0x17 : Signature address
+ * 0x18 - 0x1B : Signature size
+ * 0x1C - 0x1F : Firmware image address
+ * 0x20 - 0x23 : Firmware sectors count
+ * 0x24 - 0x27 : Custom signature address
+ * 0x28 - 0x2B : Custom signature size
+ */
+
+#define S3FWRN5_FW_IMAGE_HEADER_SIZE 44
+
+static int s3fwrn5_fw_request_firmware(struct s3fwrn5_fw_info *fw_info)
+{
+	struct s3fwrn5_fw_image *fw = &fw_info->fw;
+	u32 sig_off;
+	u32 image_off;
+	u32 custom_sig_off;
+	int ret;
+
+	ret = request_firmware(&fw->fw, fw_info->fw_name,
+		&fw_info->ndev->nfc_dev->dev);
+	if (ret < 0)
+		return ret;
+
+	if (fw->fw->size < S3FWRN5_FW_IMAGE_HEADER_SIZE)
+		return -EINVAL;
+
+	memcpy(fw->date, fw->fw->data + 0x00, 12);
+	fw->date[12] = '\0';
+
+	memcpy(&fw->version, fw->fw->data + 0x10, 4);
+
+	memcpy(&sig_off, fw->fw->data + 0x14, 4);
+	fw->sig = fw->fw->data + sig_off;
+	memcpy(&fw->sig_size, fw->fw->data + 0x18, 4);
+
+	memcpy(&image_off, fw->fw->data + 0x1C, 4);
+	fw->image = fw->fw->data + image_off;
+	memcpy(&fw->image_sectors, fw->fw->data + 0x20, 4);
+
+	memcpy(&custom_sig_off, fw->fw->data + 0x24, 4);
+	fw->custom_sig = fw->fw->data + custom_sig_off;
+	memcpy(&fw->custom_sig_size, fw->fw->data + 0x28, 4);
+
+	return 0;
+}
+
+static void s3fwrn5_fw_release_firmware(struct s3fwrn5_fw_info *fw_info)
+{
+	release_firmware(fw_info->fw.fw);
+}
+
+static int s3fwrn5_fw_get_base_addr(
+	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo, u32 *base_addr)
+{
+	int i;
+	struct {
+		u8 version[4];
+		u32 base_addr;
+	} match[] = {
+		{{0x05, 0x00, 0x00, 0x00}, 0x00005000},
+		{{0x05, 0x00, 0x00, 0x01}, 0x00003000},
+		{{0x05, 0x00, 0x00, 0x02}, 0x00003000},
+		{{0x05, 0x00, 0x00, 0x03}, 0x00003000},
+		{{0x05, 0x00, 0x00, 0x05}, 0x00003000}
+	};
+
+	for (i = 0; i < ARRAY_SIZE(match); ++i)
+		if (bootinfo->hw_version[0] == match[i].version[0] &&
+			bootinfo->hw_version[1] == match[i].version[1] &&
+			bootinfo->hw_version[3] == match[i].version[3]) {
+			*base_addr = match[i].base_addr;
+			return 0;
+		}
+
+	return -EINVAL;
+}
+
+static inline bool
+s3fwrn5_fw_is_custom(struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
+{
+	return !!bootinfo->hw_version[2];
+}
+
+int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info)
+{
+	struct s3fwrn5_fw_cmd_get_bootinfo_rsp bootinfo;
+	int ret;
+
+	/* Get firmware data */
+
+	ret = s3fwrn5_fw_request_firmware(fw_info);
+	if (ret < 0) {
+		dev_err(&fw_info->ndev->nfc_dev->dev,
+			"Failed to get fw file, ret=%02x\n", ret);
+		return ret;
+	}
+
+	/* Get bootloader info */
+
+	ret = s3fwrn5_fw_get_bootinfo(fw_info, &bootinfo);
+	if (ret < 0) {
+		dev_err(&fw_info->ndev->nfc_dev->dev,
+			"Failed to get bootinfo, ret=%02x\n", ret);
+		goto err;
+	}
+
+	/* Match hardware version to obtain firmware base address */
+
+	ret = s3fwrn5_fw_get_base_addr(&bootinfo, &fw_info->base_addr);
+	if (ret < 0) {
+		dev_err(&fw_info->ndev->nfc_dev->dev,
+			"Unknown hardware version\n");
+		goto err;
+	}
+
+	fw_info->sector_size = bootinfo.sector_size;
+
+	fw_info->sig_size = s3fwrn5_fw_is_custom(&bootinfo) ?
+		fw_info->fw.custom_sig_size : fw_info->fw.sig_size;
+	fw_info->sig = s3fwrn5_fw_is_custom(&bootinfo) ?
+		fw_info->fw.custom_sig : fw_info->fw.sig;
+
+	return 0;
+
+err:
+	s3fwrn5_fw_release_firmware(fw_info);
+	return ret;
+}
+
+bool s3fwrn5_fw_check_version(struct s3fwrn5_fw_info *fw_info, u32 version)
+{
+	struct s3fwrn5_fw_version *new = (void *) &fw_info->fw.version;
+	struct s3fwrn5_fw_version *old = (void *) &version;
+
+	if (new->major > old->major)
+		return true;
+	if (new->build1 > old->build1)
+		return true;
+	if (new->build2 > old->build2)
+		return true;
+
+	return false;
+}
+
+int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
+{
+	struct s3fwrn5_fw_image *fw = &fw_info->fw;
+	u8 hash_data[SHA1_DIGEST_SIZE];
+	struct scatterlist sg;
+	struct hash_desc desc;
+	u32 image_size, off;
+	int ret;
+
+	image_size = fw_info->sector_size * fw->image_sectors;
+
+	/* Compute SHA of firmware data */
+
+	sg_init_one(&sg, fw->image, image_size);
+	desc.tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
+	crypto_hash_init(&desc);
+	crypto_hash_update(&desc, &sg, image_size);
+	crypto_hash_final(&desc, hash_data);
+	crypto_free_hash(desc.tfm);
+
+	/* Firmware update process */
+
+	dev_info(&fw_info->ndev->nfc_dev->dev,
+		"Firmware update: %s\n", fw_info->fw_name);
+
+	ret = s3fwrn5_fw_enter_update_mode(fw_info, hash_data,
+		SHA1_DIGEST_SIZE, fw_info->sig, fw_info->sig_size);
+	if (ret < 0) {
+		dev_err(&fw_info->ndev->nfc_dev->dev,
+			"Unable to enter update mode\n");
+		goto out;
+	}
+
+	for (off = 0; off < image_size; off += fw_info->sector_size) {
+		ret = s3fwrn5_fw_update_sector(fw_info,
+			fw_info->base_addr + off, fw->image + off);
+		if (ret < 0) {
+			dev_err(&fw_info->ndev->nfc_dev->dev,
+				"Firmware update error (code=%d)\n", ret);
+			goto out;
+		}
+	}
+
+	ret = s3fwrn5_fw_complete_update_mode(fw_info);
+	if (ret < 0) {
+		dev_err(&fw_info->ndev->nfc_dev->dev,
+			"Unable to complete update mode\n");
+		goto out;
+	}
+
+	dev_info(&fw_info->ndev->nfc_dev->dev,
+		"Firmware update: success\n");
+
+out:
+	return ret;
+}
+
+void s3fwrn5_fw_init(struct s3fwrn5_fw_info *fw_info, const char *fw_name)
+{
+	fw_info->parity = 0x00;
+	fw_info->rsp = NULL;
+	fw_info->fw.fw = NULL;
+	strcpy(fw_info->fw_name, fw_name);
+	init_completion(&fw_info->completion);
+}
+
+void s3fwrn5_fw_cleanup(struct s3fwrn5_fw_info *fw_info)
+{
+	s3fwrn5_fw_release_firmware(fw_info);
+}
+
+int s3fwrn5_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
+{
+	struct s3fwrn5_info *info = nci_get_drvdata(ndev);
+	struct s3fwrn5_fw_info *fw_info = &info->fw_info;
+
+	BUG_ON(fw_info->rsp);
+
+	fw_info->rsp = skb;
+
+	complete(&fw_info->completion);
+
+	return 0;
+}