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-rw-r--r--drivers/net/usb/Kconfig19
-rw-r--r--drivers/net/usb/Makefile1
-rw-r--r--drivers/net/usb/asix.c4
-rw-r--r--drivers/net/usb/cdc_ether.c4
-rw-r--r--drivers/net/usb/cdc_ncm.c1213
-rw-r--r--drivers/net/usb/hso.c40
-rw-r--r--drivers/net/usb/ipheth.c2
-rw-r--r--drivers/net/usb/mcs7830.c14
-rw-r--r--drivers/net/usb/pegasus.c4
-rw-r--r--drivers/net/usb/sierra_net.c5
-rw-r--r--drivers/net/usb/smsc95xx.c7
-rw-r--r--drivers/net/usb/usbnet.c48
12 files changed, 1305 insertions, 56 deletions
diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index 52ffabe6db0e..6f600cced6e1 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -196,6 +196,25 @@ config USB_NET_CDC_EEM
IEEE 802 "local assignment" bit is set in the address, a "usbX"
name is used instead.
+config USB_NET_CDC_NCM
+ tristate "CDC NCM support"
+ depends on USB_USBNET
+ default y
+ help
+ This driver provides support for CDC NCM (Network Control Model
+ Device USB Class Specification). The CDC NCM specification is
+ available from <http://www.usb.org/>.
+
+ Say "y" to link the driver statically, or "m" to build a
+ dynamically linked module.
+
+ This driver should work with at least the following devices:
+ * ST-Ericsson M700 LTE FDD/TDD Mobile Broadband Modem (ref. design)
+ * ST-Ericsson M5730 HSPA+ Mobile Broadband Modem (reference design)
+ * ST-Ericsson M570 HSPA+ Mobile Broadband Modem (reference design)
+ * ST-Ericsson M343 HSPA Mobile Broadband Modem (reference design)
+ * Ericsson F5521gw Mobile Broadband Module
+
config USB_NET_DM9601
tristate "Davicom DM9601 based USB 1.1 10/100 ethernet devices"
depends on USB_USBNET
diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile
index a19b0259ae16..cac170301187 100644
--- a/drivers/net/usb/Makefile
+++ b/drivers/net/usb/Makefile
@@ -26,4 +26,5 @@ obj-$(CONFIG_USB_CDC_PHONET) += cdc-phonet.o
obj-$(CONFIG_USB_IPHETH) += ipheth.o
obj-$(CONFIG_USB_SIERRA_NET) += sierra_net.o
obj-$(CONFIG_USB_NET_CX82310_ETH) += cx82310_eth.o
+obj-$(CONFIG_USB_NET_CDC_NCM) += cdc_ncm.o
diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index aea4645be7f6..6140b56cce53 100644
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -1508,6 +1508,10 @@ static const struct usb_device_id products [] = {
USB_DEVICE (0x0b95, 0x1780),
.driver_info = (unsigned long) &ax88178_info,
}, {
+ // Logitec LAN-GTJ/U2A
+ USB_DEVICE (0x0789, 0x0160),
+ .driver_info = (unsigned long) &ax88178_info,
+}, {
// Linksys USB200M Rev 2
USB_DEVICE (0x13b1, 0x0018),
.driver_info = (unsigned long) &ax88772_info,
diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index b3fe0de40469..9a60e415d76b 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -99,9 +99,7 @@ int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
*/
buf = dev->udev->actconfig->extra;
len = dev->udev->actconfig->extralen;
- if (len)
- dev_dbg(&intf->dev,
- "CDC descriptors on config\n");
+ dev_dbg(&intf->dev, "CDC descriptors on config\n");
}
/* Maybe CDC descriptors are after the endpoint? This bug has
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
new file mode 100644
index 000000000000..593c104ab199
--- /dev/null
+++ b/drivers/net/usb/cdc_ncm.c
@@ -0,0 +1,1213 @@
+/*
+ * cdc_ncm.c
+ *
+ * Copyright (C) ST-Ericsson 2010
+ * Contact: Alexey Orishko <alexey.orishko@stericsson.com>
+ * Original author: Hans Petter Selasky <hans.petter.selasky@stericsson.com>
+ *
+ * USB Host Driver for Network Control Model (NCM)
+ * http://www.usb.org/developers/devclass_docs/NCM10.zip
+ *
+ * The NCM encoding, decoding and initialization logic
+ * derives from FreeBSD 8.x. if_cdce.c and if_cdcereg.h
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose this file to be licensed under the terms
+ * of the GNU General Public License (GPL) Version 2 or the 2-clause
+ * BSD license listed below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/ctype.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/usb.h>
+#include <linux/version.h>
+#include <linux/timer.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
+#include <linux/usb/usbnet.h>
+#include <linux/usb/cdc.h>
+
+#define DRIVER_VERSION "30-Nov-2010"
+
+/* CDC NCM subclass 3.2.1 */
+#define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10
+
+/* Maximum NTB length */
+#define CDC_NCM_NTB_MAX_SIZE_TX 16384 /* bytes */
+#define CDC_NCM_NTB_MAX_SIZE_RX 16384 /* bytes */
+
+/* Minimum value for MaxDatagramSize, ch. 6.2.9 */
+#define CDC_NCM_MIN_DATAGRAM_SIZE 1514 /* bytes */
+
+#define CDC_NCM_MIN_TX_PKT 512 /* bytes */
+
+/* Default value for MaxDatagramSize */
+#define CDC_NCM_MAX_DATAGRAM_SIZE 2048 /* bytes */
+
+/*
+ * Maximum amount of datagrams in NCM Datagram Pointer Table, not counting
+ * the last NULL entry. Any additional datagrams in NTB would be discarded.
+ */
+#define CDC_NCM_DPT_DATAGRAMS_MAX 32
+
+/* Restart the timer, if amount of datagrams is less than given value */
+#define CDC_NCM_RESTART_TIMER_DATAGRAM_CNT 3
+
+/* The following macro defines the minimum header space */
+#define CDC_NCM_MIN_HDR_SIZE \
+ (sizeof(struct usb_cdc_ncm_nth16) + sizeof(struct usb_cdc_ncm_ndp16) + \
+ (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16))
+
+struct connection_speed_change {
+ __le32 USBitRate; /* holds 3GPP downlink value, bits per second */
+ __le32 DSBitRate; /* holds 3GPP uplink value, bits per second */
+} __attribute__ ((packed));
+
+struct cdc_ncm_data {
+ struct usb_cdc_ncm_nth16 nth16;
+ struct usb_cdc_ncm_ndp16 ndp16;
+ struct usb_cdc_ncm_dpe16 dpe16[CDC_NCM_DPT_DATAGRAMS_MAX + 1];
+};
+
+struct cdc_ncm_ctx {
+ struct cdc_ncm_data rx_ncm;
+ struct cdc_ncm_data tx_ncm;
+ struct usb_cdc_ncm_ntb_parameters ncm_parm;
+ struct timer_list tx_timer;
+
+ const struct usb_cdc_ncm_desc *func_desc;
+ const struct usb_cdc_header_desc *header_desc;
+ const struct usb_cdc_union_desc *union_desc;
+ const struct usb_cdc_ether_desc *ether_desc;
+
+ struct net_device *netdev;
+ struct usb_device *udev;
+ struct usb_host_endpoint *in_ep;
+ struct usb_host_endpoint *out_ep;
+ struct usb_host_endpoint *status_ep;
+ struct usb_interface *intf;
+ struct usb_interface *control;
+ struct usb_interface *data;
+
+ struct sk_buff *tx_curr_skb;
+ struct sk_buff *tx_rem_skb;
+
+ spinlock_t mtx;
+
+ u32 tx_timer_pending;
+ u32 tx_curr_offset;
+ u32 tx_curr_last_offset;
+ u32 tx_curr_frame_num;
+ u32 rx_speed;
+ u32 tx_speed;
+ u32 rx_max;
+ u32 tx_max;
+ u32 max_datagram_size;
+ u16 tx_max_datagrams;
+ u16 tx_remainder;
+ u16 tx_modulus;
+ u16 tx_ndp_modulus;
+ u16 tx_seq;
+ u16 connected;
+ u8 data_claimed;
+ u8 control_claimed;
+};
+
+static void cdc_ncm_tx_timeout(unsigned long arg);
+static const struct driver_info cdc_ncm_info;
+static struct usb_driver cdc_ncm_driver;
+static struct ethtool_ops cdc_ncm_ethtool_ops;
+
+static const struct usb_device_id cdc_devs[] = {
+ { USB_INTERFACE_INFO(USB_CLASS_COMM,
+ USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),
+ .driver_info = (unsigned long)&cdc_ncm_info,
+ },
+ {
+ },
+};
+
+MODULE_DEVICE_TABLE(usb, cdc_devs);
+
+static void
+cdc_ncm_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
+{
+ struct usbnet *dev = netdev_priv(net);
+
+ strncpy(info->driver, dev->driver_name, sizeof(info->driver));
+ strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
+ strncpy(info->fw_version, dev->driver_info->description,
+ sizeof(info->fw_version));
+ usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
+}
+
+static int
+cdc_ncm_do_request(struct cdc_ncm_ctx *ctx, struct usb_cdc_notification *req,
+ void *data, u16 flags, u16 *actlen, u16 timeout)
+{
+ int err;
+
+ err = usb_control_msg(ctx->udev, (req->bmRequestType & USB_DIR_IN) ?
+ usb_rcvctrlpipe(ctx->udev, 0) :
+ usb_sndctrlpipe(ctx->udev, 0),
+ req->bNotificationType, req->bmRequestType,
+ req->wValue,
+ req->wIndex, data,
+ req->wLength, timeout);
+
+ if (err < 0) {
+ if (actlen)
+ *actlen = 0;
+ return err;
+ }
+
+ if (actlen)
+ *actlen = err;
+
+ return 0;
+}
+
+static u8 cdc_ncm_setup(struct cdc_ncm_ctx *ctx)
+{
+ struct usb_cdc_notification req;
+ u32 val;
+ __le16 max_datagram_size;
+ u8 flags;
+ u8 iface_no;
+ int err;
+
+ iface_no = ctx->control->cur_altsetting->desc.bInterfaceNumber;
+
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_GET_NTB_PARAMETERS;
+ req.wValue = 0;
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = cpu_to_le16(sizeof(ctx->ncm_parm));
+
+ err = cdc_ncm_do_request(ctx, &req, &ctx->ncm_parm, 0, NULL, 1000);
+ if (err) {
+ pr_debug("failed GET_NTB_PARAMETERS\n");
+ return 1;
+ }
+
+ /* read correct set of parameters according to device mode */
+ ctx->rx_max = le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize);
+ ctx->tx_max = le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize);
+ ctx->tx_remainder = le16_to_cpu(ctx->ncm_parm.wNdpOutPayloadRemainder);
+ ctx->tx_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutDivisor);
+ ctx->tx_ndp_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutAlignment);
+
+ if (ctx->func_desc != NULL)
+ flags = ctx->func_desc->bmNetworkCapabilities;
+ else
+ flags = 0;
+
+ pr_debug("dwNtbInMaxSize=%u dwNtbOutMaxSize=%u "
+ "wNdpOutPayloadRemainder=%u wNdpOutDivisor=%u "
+ "wNdpOutAlignment=%u flags=0x%x\n",
+ ctx->rx_max, ctx->tx_max, ctx->tx_remainder, ctx->tx_modulus,
+ ctx->tx_ndp_modulus, flags);
+
+ /* max count of tx datagrams without terminating NULL entry */
+ ctx->tx_max_datagrams = CDC_NCM_DPT_DATAGRAMS_MAX;
+
+ /* verify maximum size of received NTB in bytes */
+ if ((ctx->rx_max <
+ (CDC_NCM_MIN_HDR_SIZE + CDC_NCM_MIN_DATAGRAM_SIZE)) ||
+ (ctx->rx_max > CDC_NCM_NTB_MAX_SIZE_RX)) {
+ pr_debug("Using default maximum receive length=%d\n",
+ CDC_NCM_NTB_MAX_SIZE_RX);
+ ctx->rx_max = CDC_NCM_NTB_MAX_SIZE_RX;
+ }
+
+ /* verify maximum size of transmitted NTB in bytes */
+ if ((ctx->tx_max <
+ (CDC_NCM_MIN_HDR_SIZE + CDC_NCM_MIN_DATAGRAM_SIZE)) ||
+ (ctx->tx_max > CDC_NCM_NTB_MAX_SIZE_TX)) {
+ pr_debug("Using default maximum transmit length=%d\n",
+ CDC_NCM_NTB_MAX_SIZE_TX);
+ ctx->tx_max = CDC_NCM_NTB_MAX_SIZE_TX;
+ }
+
+ /*
+ * verify that the structure alignment is:
+ * - power of two
+ * - not greater than the maximum transmit length
+ * - not less than four bytes
+ */
+ val = ctx->tx_ndp_modulus;
+
+ if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) ||
+ (val != ((-val) & val)) || (val >= ctx->tx_max)) {
+ pr_debug("Using default alignment: 4 bytes\n");
+ ctx->tx_ndp_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE;
+ }
+
+ /*
+ * verify that the payload alignment is:
+ * - power of two
+ * - not greater than the maximum transmit length
+ * - not less than four bytes
+ */
+ val = ctx->tx_modulus;
+
+ if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) ||
+ (val != ((-val) & val)) || (val >= ctx->tx_max)) {
+ pr_debug("Using default transmit modulus: 4 bytes\n");
+ ctx->tx_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE;
+ }
+
+ /* verify the payload remainder */
+ if (ctx->tx_remainder >= ctx->tx_modulus) {
+ pr_debug("Using default transmit remainder: 0 bytes\n");
+ ctx->tx_remainder = 0;
+ }
+
+ /* adjust TX-remainder according to NCM specification. */
+ ctx->tx_remainder = ((ctx->tx_remainder - ETH_HLEN) &
+ (ctx->tx_modulus - 1));
+
+ /* additional configuration */
+
+ /* set CRC Mode */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_SET_CRC_MODE;
+ req.wValue = cpu_to_le16(USB_CDC_NCM_CRC_NOT_APPENDED);
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = 0;
+
+ err = cdc_ncm_do_request(ctx, &req, NULL, 0, NULL, 1000);
+ if (err)
+ pr_debug("Setting CRC mode off failed\n");
+
+ /* set NTB format */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_SET_NTB_FORMAT;
+ req.wValue = cpu_to_le16(USB_CDC_NCM_NTB16_FORMAT);
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = 0;
+
+ err = cdc_ncm_do_request(ctx, &req, NULL, 0, NULL, 1000);
+ if (err)
+ pr_debug("Setting NTB format to 16-bit failed\n");
+
+ /* set Max Datagram Size (MTU) */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_GET_MAX_DATAGRAM_SIZE;
+ req.wValue = 0;
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = cpu_to_le16(2);
+
+ err = cdc_ncm_do_request(ctx, &req, &max_datagram_size, 0, NULL, 1000);
+ if (err) {
+ pr_debug(" GET_MAX_DATAGRAM_SIZE failed, using size=%u\n",
+ CDC_NCM_MIN_DATAGRAM_SIZE);
+ /* use default */
+ ctx->max_datagram_size = CDC_NCM_MIN_DATAGRAM_SIZE;
+ } else {
+ ctx->max_datagram_size = le16_to_cpu(max_datagram_size);
+
+ if (ctx->max_datagram_size < CDC_NCM_MIN_DATAGRAM_SIZE)
+ ctx->max_datagram_size = CDC_NCM_MIN_DATAGRAM_SIZE;
+ else if (ctx->max_datagram_size > CDC_NCM_MAX_DATAGRAM_SIZE)
+ ctx->max_datagram_size = CDC_NCM_MAX_DATAGRAM_SIZE;
+ }
+
+ if (ctx->netdev->mtu != (ctx->max_datagram_size - ETH_HLEN))
+ ctx->netdev->mtu = ctx->max_datagram_size - ETH_HLEN;
+
+ return 0;
+}
+
+static void
+cdc_ncm_find_endpoints(struct cdc_ncm_ctx *ctx, struct usb_interface *intf)
+{
+ struct usb_host_endpoint *e;
+ u8 ep;
+
+ for (ep = 0; ep < intf->cur_altsetting->desc.bNumEndpoints; ep++) {
+
+ e = intf->cur_altsetting->endpoint + ep;
+ switch (e->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_INT:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (ctx->status_ep == NULL)
+ ctx->status_ep = e;
+ }
+ break;
+
+ case USB_ENDPOINT_XFER_BULK:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (ctx->in_ep == NULL)
+ ctx->in_ep = e;
+ } else {
+ if (ctx->out_ep == NULL)
+ ctx->out_ep = e;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+}
+
+static void cdc_ncm_free(struct cdc_ncm_ctx *ctx)
+{
+ if (ctx == NULL)
+ return;
+
+ del_timer_sync(&ctx->tx_timer);
+
+ if (ctx->data_claimed) {
+ usb_set_intfdata(ctx->data, NULL);
+ usb_driver_release_interface(driver_of(ctx->intf), ctx->data);
+ }
+
+ if (ctx->control_claimed) {
+ usb_set_intfdata(ctx->control, NULL);
+ usb_driver_release_interface(driver_of(ctx->intf),
+ ctx->control);
+ }
+
+ if (ctx->tx_rem_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_rem_skb);
+ ctx->tx_rem_skb = NULL;
+ }
+
+ if (ctx->tx_curr_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_curr_skb);
+ ctx->tx_curr_skb = NULL;
+ }
+
+ kfree(ctx);
+}
+
+static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct cdc_ncm_ctx *ctx;
+ struct usb_driver *driver;
+ u8 *buf;
+ int len;
+ int temp;
+ u8 iface_no;
+
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (ctx == NULL)
+ goto error;
+
+ memset(ctx, 0, sizeof(*ctx));
+
+ init_timer(&ctx->tx_timer);
+ spin_lock_init(&ctx->mtx);
+ ctx->netdev = dev->net;
+
+ /* store ctx pointer in device data field */
+ dev->data[0] = (unsigned long)ctx;
+
+ /* get some pointers */
+ driver = driver_of(intf);
+ buf = intf->cur_altsetting->extra;
+ len = intf->cur_altsetting->extralen;
+
+ ctx->udev = dev->udev;
+ ctx->intf = intf;
+
+ /* parse through descriptors associated with control interface */
+ while ((len > 0) && (buf[0] > 2) && (buf[0] <= len)) {
+
+ if (buf[1] != USB_DT_CS_INTERFACE)
+ goto advance;
+
+ switch (buf[2]) {
+ case USB_CDC_UNION_TYPE:
+ if (buf[0] < sizeof(*(ctx->union_desc)))
+ break;
+
+ ctx->union_desc =
+ (const struct usb_cdc_union_desc *)buf;
+
+ ctx->control = usb_ifnum_to_if(dev->udev,
+ ctx->union_desc->bMasterInterface0);
+ ctx->data = usb_ifnum_to_if(dev->udev,
+ ctx->union_desc->bSlaveInterface0);
+ break;
+
+ case USB_CDC_ETHERNET_TYPE:
+ if (buf[0] < sizeof(*(ctx->ether_desc)))
+ break;
+
+ ctx->ether_desc =
+ (const struct usb_cdc_ether_desc *)buf;
+
+ dev->hard_mtu =
+ le16_to_cpu(ctx->ether_desc->wMaxSegmentSize);
+
+ if (dev->hard_mtu <
+ (CDC_NCM_MIN_DATAGRAM_SIZE - ETH_HLEN))
+ dev->hard_mtu =
+ CDC_NCM_MIN_DATAGRAM_SIZE - ETH_HLEN;
+
+ else if (dev->hard_mtu >
+ (CDC_NCM_MAX_DATAGRAM_SIZE - ETH_HLEN))
+ dev->hard_mtu =
+ CDC_NCM_MAX_DATAGRAM_SIZE - ETH_HLEN;
+ break;
+
+ case USB_CDC_NCM_TYPE:
+ if (buf[0] < sizeof(*(ctx->func_desc)))
+ break;
+
+ ctx->func_desc = (const struct usb_cdc_ncm_desc *)buf;
+ break;
+
+ default:
+ break;
+ }
+advance:
+ /* advance to next descriptor */
+ temp = buf[0];
+ buf += temp;
+ len -= temp;
+ }
+
+ /* check if we got everything */
+ if ((ctx->control == NULL) || (ctx->data == NULL) ||
+ (ctx->ether_desc == NULL))
+ goto error;
+
+ /* claim interfaces, if any */
+ if (ctx->data != intf) {
+ temp = usb_driver_claim_interface(driver, ctx->data, dev);
+ if (temp)
+ goto error;
+ ctx->data_claimed = 1;
+ }
+
+ if (ctx->control != intf) {
+ temp = usb_driver_claim_interface(driver, ctx->control, dev);
+ if (temp)
+ goto error;
+ ctx->control_claimed = 1;
+ }
+
+ iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
+
+ /* reset data interface */
+ temp = usb_set_interface(dev->udev, iface_no, 0);
+ if (temp)
+ goto error;
+
+ /* initialize data interface */
+ if (cdc_ncm_setup(ctx))
+ goto error;
+
+ /* configure data interface */
+ temp = usb_set_interface(dev->udev, iface_no, 1);
+ if (temp)
+ goto error;
+
+ cdc_ncm_find_endpoints(ctx, ctx->data);
+ cdc_ncm_find_endpoints(ctx, ctx->control);
+
+ if ((ctx->in_ep == NULL) || (ctx->out_ep == NULL) ||
+ (ctx->status_ep == NULL))
+ goto error;
+
+ dev->net->ethtool_ops = &cdc_ncm_ethtool_ops;
+
+ usb_set_intfdata(ctx->data, dev);
+ usb_set_intfdata(ctx->control, dev);
+ usb_set_intfdata(ctx->intf, dev);
+
+ temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress);
+ if (temp)
+ goto error;
+
+ dev_info(&dev->udev->dev, "MAC-Address: "
+ "0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
+ dev->net->dev_addr[0], dev->net->dev_addr[1],
+ dev->net->dev_addr[2], dev->net->dev_addr[3],
+ dev->net->dev_addr[4], dev->net->dev_addr[5]);
+
+ dev->in = usb_rcvbulkpipe(dev->udev,
+ ctx->in_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ dev->out = usb_sndbulkpipe(dev->udev,
+ ctx->out_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ dev->status = ctx->status_ep;
+ dev->rx_urb_size = ctx->rx_max;
+
+ /*
+ * We should get an event when network connection is "connected" or
+ * "disconnected". Set network connection in "disconnected" state
+ * (carrier is OFF) during attach, so the IP network stack does not
+ * start IPv6 negotiation and more.
+ */
+ netif_carrier_off(dev->net);
+ ctx->tx_speed = ctx->rx_speed = 0;
+ return 0;
+
+error:
+ cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]);
+ dev->data[0] = 0;
+ dev_info(&dev->udev->dev, "Descriptor failure\n");
+ return -ENODEV;
+}
+
+static void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ struct usb_driver *driver;
+
+ if (ctx == NULL)
+ return; /* no setup */
+
+ driver = driver_of(intf);
+
+ usb_set_intfdata(ctx->data, NULL);
+ usb_set_intfdata(ctx->control, NULL);
+ usb_set_intfdata(ctx->intf, NULL);
+
+ /* release interfaces, if any */
+ if (ctx->data_claimed) {
+ usb_driver_release_interface(driver, ctx->data);
+ ctx->data_claimed = 0;
+ }
+
+ if (ctx->control_claimed) {
+ usb_driver_release_interface(driver, ctx->control);
+ ctx->control_claimed = 0;
+ }
+
+ cdc_ncm_free(ctx);
+}
+
+static void cdc_ncm_zero_fill(u8 *ptr, u32 first, u32 end, u32 max)
+{
+ if (first >= max)
+ return;
+ if (first >= end)
+ return;
+ if (end > max)
+ end = max;
+ memset(ptr + first, 0, end - first);
+}
+
+static struct sk_buff *
+cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb)
+{
+ struct sk_buff *skb_out;
+ u32 rem;
+ u32 offset;
+ u32 last_offset;
+ u16 n = 0;
+ u8 timeout = 0;
+
+ /* if there is a remaining skb, it gets priority */
+ if (skb != NULL)
+ swap(skb, ctx->tx_rem_skb);
+ else
+ timeout = 1;
+
+ /*
+ * +----------------+
+ * | skb_out |
+ * +----------------+
+ * ^ offset
+ * ^ last_offset
+ */
+
+ /* check if we are resuming an OUT skb */
+ if (ctx->tx_curr_skb != NULL) {
+ /* pop variables */
+ skb_out = ctx->tx_curr_skb;
+ offset = ctx->tx_curr_offset;
+ last_offset = ctx->tx_curr_last_offset;
+ n = ctx->tx_curr_frame_num;
+
+ } else {
+ /* reset variables */
+ skb_out = alloc_skb(ctx->tx_max, GFP_ATOMIC);
+ if (skb_out == NULL) {
+ if (skb != NULL) {
+ dev_kfree_skb_any(skb);
+ ctx->netdev->stats.tx_dropped++;
+ }
+ goto exit_no_skb;
+ }
+
+ /* make room for NTH and NDP */
+ offset = ALIGN(sizeof(struct usb_cdc_ncm_nth16),
+ ctx->tx_ndp_modulus) +
+ sizeof(struct usb_cdc_ncm_ndp16) +
+ (ctx->tx_max_datagrams + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16);
+
+ /* store last valid offset before alignment */
+ last_offset = offset;
+ /* align first Datagram offset correctly */
+ offset = ALIGN(offset, ctx->tx_modulus) + ctx->tx_remainder;
+ /* zero buffer till the first IP datagram */
+ cdc_ncm_zero_fill(skb_out->data, 0, offset, offset);
+ n = 0;
+ ctx->tx_curr_frame_num = 0;
+ }
+
+ for (; n < ctx->tx_max_datagrams; n++) {
+ /* check if end of transmit buffer is reached */
+ if (offset >= ctx->tx_max)
+ break;
+
+ /* compute maximum buffer size */
+ rem = ctx->tx_max - offset;
+
+ if (skb == NULL) {
+ skb = ctx->tx_rem_skb;
+ ctx->tx_rem_skb = NULL;
+
+ /* check for end of skb */
+ if (skb == NULL)
+ break;
+ }
+
+ if (skb->len > rem) {
+ if (n == 0) {
+ /* won't fit, MTU problem? */
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ ctx->netdev->stats.tx_dropped++;
+ } else {
+ /* no room for skb - store for later */
+ if (ctx->tx_rem_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_rem_skb);
+ ctx->netdev->stats.tx_dropped++;
+ }
+ ctx->tx_rem_skb = skb;
+ skb = NULL;
+
+ /* loop one more time */
+ timeout = 1;
+ }
+ break;
+ }
+
+ memcpy(((u8 *)skb_out->data) + offset, skb->data, skb->len);
+
+ ctx->tx_ncm.dpe16[n].wDatagramLength = cpu_to_le16(skb->len);
+ ctx->tx_ncm.dpe16[n].wDatagramIndex = cpu_to_le16(offset);
+
+ /* update offset */
+ offset += skb->len;
+
+ /* store last valid offset before alignment */
+ last_offset = offset;
+
+ /* align offset correctly */
+ offset = ALIGN(offset, ctx->tx_modulus) + ctx->tx_remainder;
+
+ /* zero padding */
+ cdc_ncm_zero_fill(skb_out->data, last_offset, offset,
+ ctx->tx_max);
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ }
+
+ /* free up any dangling skb */
+ if (skb != NULL) {
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ ctx->netdev->stats.tx_dropped++;
+ }
+
+ ctx->tx_curr_frame_num = n;
+
+ if (n == 0) {
+ /* wait for more frames */
+ /* push variables */
+ ctx->tx_curr_skb = skb_out;
+ ctx->tx_curr_offset = offset;
+ ctx->tx_curr_last_offset = last_offset;
+ goto exit_no_skb;
+
+ } else if ((n < ctx->tx_max_datagrams) && (timeout == 0)) {
+ /* wait for more frames */
+ /* push variables */
+ ctx->tx_curr_skb = skb_out;
+ ctx->tx_curr_offset = offset;
+ ctx->tx_curr_last_offset = last_offset;
+ /* set the pending count */
+ if (n < CDC_NCM_RESTART_TIMER_DATAGRAM_CNT)
+ ctx->tx_timer_pending = 2;
+ goto exit_no_skb;
+
+ } else {
+ /* frame goes out */
+ /* variables will be reset at next call */
+ }
+
+ /* check for overflow */
+ if (last_offset > ctx->tx_max)
+ last_offset = ctx->tx_max;
+
+ /* revert offset */
+ offset = last_offset;
+
+ /*
+ * If collected data size is less or equal CDC_NCM_MIN_TX_PKT bytes,
+ * we send buffers as it is. If we get more data, it would be more
+ * efficient for USB HS mobile device with DMA engine to receive a full
+ * size NTB, than canceling DMA transfer and receiving a short packet.
+ */
+ if (offset > CDC_NCM_MIN_TX_PKT)
+ offset = ctx->tx_max;
+
+ /* final zero padding */
+ cdc_ncm_zero_fill(skb_out->data, last_offset, offset, ctx->tx_max);
+
+ /* store last offset */
+ last_offset = offset;
+
+ if ((last_offset < ctx->tx_max) && ((last_offset %
+ le16_to_cpu(ctx->out_ep->desc.wMaxPacketSize)) == 0)) {
+ /* force short packet */
+ *(((u8 *)skb_out->data) + last_offset) = 0;
+ last_offset++;
+ }
+
+ /* zero the rest of the DPEs plus the last NULL entry */
+ for (; n <= CDC_NCM_DPT_DATAGRAMS_MAX; n++) {
+ ctx->tx_ncm.dpe16[n].wDatagramLength = 0;
+ ctx->tx_ncm.dpe16[n].wDatagramIndex = 0;
+ }
+
+ /* fill out 16-bit NTB header */
+ ctx->tx_ncm.nth16.dwSignature = cpu_to_le32(USB_CDC_NCM_NTH16_SIGN);
+ ctx->tx_ncm.nth16.wHeaderLength =
+ cpu_to_le16(sizeof(ctx->tx_ncm.nth16));
+ ctx->tx_ncm.nth16.wSequence = cpu_to_le16(ctx->tx_seq);
+ ctx->tx_ncm.nth16.wBlockLength = cpu_to_le16(last_offset);
+ ctx->tx_ncm.nth16.wFpIndex = ALIGN(sizeof(struct usb_cdc_ncm_nth16),
+ ctx->tx_ndp_modulus);
+
+ memcpy(skb_out->data, &(ctx->tx_ncm.nth16), sizeof(ctx->tx_ncm.nth16));
+ ctx->tx_seq++;
+
+ /* fill out 16-bit NDP table */
+ ctx->tx_ncm.ndp16.dwSignature =
+ cpu_to_le32(USB_CDC_NCM_NDP16_NOCRC_SIGN);
+ rem = sizeof(ctx->tx_ncm.ndp16) + ((ctx->tx_curr_frame_num + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16));
+ ctx->tx_ncm.ndp16.wLength = cpu_to_le16(rem);
+ ctx->tx_ncm.ndp16.wNextFpIndex = 0; /* reserved */
+
+ memcpy(((u8 *)skb_out->data) + ctx->tx_ncm.nth16.wFpIndex,
+ &(ctx->tx_ncm.ndp16),
+ sizeof(ctx->tx_ncm.ndp16));
+
+ memcpy(((u8 *)skb_out->data) + ctx->tx_ncm.nth16.wFpIndex +
+ sizeof(ctx->tx_ncm.ndp16),
+ &(ctx->tx_ncm.dpe16),
+ (ctx->tx_curr_frame_num + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16));
+
+ /* set frame length */
+ skb_put(skb_out, last_offset);
+
+ /* return skb */
+ ctx->tx_curr_skb = NULL;
+ return skb_out;
+
+exit_no_skb:
+ return NULL;
+}
+
+static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx)
+{
+ /* start timer, if not already started */
+ if (timer_pending(&ctx->tx_timer) == 0) {
+ ctx->tx_timer.function = &cdc_ncm_tx_timeout;
+ ctx->tx_timer.data = (unsigned long)ctx;
+ ctx->tx_timer.expires = jiffies + ((HZ + 999) / 1000);
+ add_timer(&ctx->tx_timer);
+ }
+}
+
+static void cdc_ncm_tx_timeout(unsigned long arg)
+{
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)arg;
+ u8 restart;
+
+ spin_lock(&ctx->mtx);
+ if (ctx->tx_timer_pending != 0) {
+ ctx->tx_timer_pending--;
+ restart = 1;
+ } else
+ restart = 0;
+
+ spin_unlock(&ctx->mtx);
+
+ if (restart)
+ cdc_ncm_tx_timeout_start(ctx);
+ else if (ctx->netdev != NULL)
+ usbnet_start_xmit(NULL, ctx->netdev);
+}
+
+static struct sk_buff *
+cdc_ncm_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
+{
+ struct sk_buff *skb_out;
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ u8 need_timer = 0;
+
+ /*
+ * The Ethernet API we are using does not support transmitting
+ * multiple Ethernet frames in a single call. This driver will
+ * accumulate multiple Ethernet frames and send out a larger
+ * USB frame when the USB buffer is full or when a single jiffies
+ * timeout happens.
+ */
+ if (ctx == NULL)
+ goto error;
+
+ spin_lock(&ctx->mtx);
+ skb_out = cdc_ncm_fill_tx_frame(ctx, skb);
+ if (ctx->tx_curr_skb != NULL)
+ need_timer = 1;
+ spin_unlock(&ctx->mtx);
+
+ /* Start timer, if there is a remaining skb */
+ if (need_timer)
+ cdc_ncm_tx_timeout_start(ctx);
+
+ if (skb_out)
+ dev->net->stats.tx_packets += ctx->tx_curr_frame_num;
+ return skb_out;
+
+error:
+ if (skb != NULL)
+ dev_kfree_skb_any(skb);
+
+ return NULL;
+}
+
+static int cdc_ncm_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in)
+{
+ struct sk_buff *skb;
+ struct cdc_ncm_ctx *ctx;
+ int sumlen;
+ int actlen;
+ int temp;
+ int nframes;
+ int x;
+ int offset;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ if (ctx == NULL)
+ goto error;
+
+ actlen = skb_in->len;
+ sumlen = CDC_NCM_NTB_MAX_SIZE_RX;
+
+ if (actlen < (sizeof(ctx->rx_ncm.nth16) + sizeof(ctx->rx_ncm.ndp16))) {
+ pr_debug("frame too short\n");
+ goto error;
+ }
+
+ memcpy(&(ctx->rx_ncm.nth16), ((u8 *)skb_in->data),
+ sizeof(ctx->rx_ncm.nth16));
+
+ if (le32_to_cpu(ctx->rx_ncm.nth16.dwSignature) !=
+ USB_CDC_NCM_NTH16_SIGN) {
+ pr_debug("invalid NTH16 signature <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.nth16.dwSignature));
+ goto error;
+ }
+
+ temp = le16_to_cpu(ctx->rx_ncm.nth16.wBlockLength);
+ if (temp > sumlen) {
+ pr_debug("unsupported NTB block length %u/%u\n", temp, sumlen);
+ goto error;
+ }
+
+ temp = le16_to_cpu(ctx->rx_ncm.nth16.wFpIndex);
+ if ((temp + sizeof(ctx->rx_ncm.ndp16)) > actlen) {
+ pr_debug("invalid DPT16 index\n");
+ goto error;
+ }
+
+ memcpy(&(ctx->rx_ncm.ndp16), ((u8 *)skb_in->data) + temp,
+ sizeof(ctx->rx_ncm.ndp16));
+
+ if (le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature) !=
+ USB_CDC_NCM_NDP16_NOCRC_SIGN) {
+ pr_debug("invalid DPT16 signature <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature));
+ goto error;
+ }
+
+ if (le16_to_cpu(ctx->rx_ncm.ndp16.wLength) <
+ USB_CDC_NCM_NDP16_LENGTH_MIN) {
+ pr_debug("invalid DPT16 length <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature));
+ goto error;
+ }
+
+ nframes = ((le16_to_cpu(ctx->rx_ncm.ndp16.wLength) -
+ sizeof(struct usb_cdc_ncm_ndp16)) /
+ sizeof(struct usb_cdc_ncm_dpe16));
+ nframes--; /* we process NDP entries except for the last one */
+
+ pr_debug("nframes = %u\n", nframes);
+
+ temp += sizeof(ctx->rx_ncm.ndp16);
+
+ if ((temp + nframes * (sizeof(struct usb_cdc_ncm_dpe16))) > actlen) {
+ pr_debug("Invalid nframes = %d\n", nframes);
+ goto error;
+ }
+
+ if (nframes > CDC_NCM_DPT_DATAGRAMS_MAX) {
+ pr_debug("Truncating number of frames from %u to %u\n",
+ nframes, CDC_NCM_DPT_DATAGRAMS_MAX);
+ nframes = CDC_NCM_DPT_DATAGRAMS_MAX;
+ }
+
+ memcpy(&(ctx->rx_ncm.dpe16), ((u8 *)skb_in->data) + temp,
+ nframes * (sizeof(struct usb_cdc_ncm_dpe16)));
+
+ for (x = 0; x < nframes; x++) {
+ offset = le16_to_cpu(ctx->rx_ncm.dpe16[x].wDatagramIndex);
+ temp = le16_to_cpu(ctx->rx_ncm.dpe16[x].wDatagramLength);
+
+ /*
+ * CDC NCM ch. 3.7
+ * All entries after first NULL entry are to be ignored
+ */
+ if ((offset == 0) || (temp == 0)) {
+ if (!x)
+ goto error; /* empty NTB */
+ break;
+ }
+
+ /* sanity checking */
+ if (((offset + temp) > actlen) ||
+ (temp > CDC_NCM_MAX_DATAGRAM_SIZE) || (temp < ETH_HLEN)) {
+ pr_debug("invalid frame detected (ignored)"
+ "offset[%u]=%u, length=%u, skb=%p\n",
+ x, offset, temp, skb);
+ if (!x)
+ goto error;
+ break;
+
+ } else {
+ skb = skb_clone(skb_in, GFP_ATOMIC);
+ skb->len = temp;
+ skb->data = ((u8 *)skb_in->data) + offset;
+ skb_set_tail_pointer(skb, temp);
+ usbnet_skb_return(dev, skb);
+ }
+ }
+ return 1;
+error:
+ return 0;
+}
+
+static void
+cdc_ncm_speed_change(struct cdc_ncm_ctx *ctx,
+ struct connection_speed_change *data)
+{
+ uint32_t rx_speed = le32_to_cpu(data->USBitRate);
+ uint32_t tx_speed = le32_to_cpu(data->DSBitRate);
+
+ /*
+ * Currently the USB-NET API does not support reporting the actual
+ * device speed. Do print it instead.
+ */
+ if ((tx_speed != ctx->tx_speed) || (rx_speed != ctx->rx_speed)) {
+ ctx->tx_speed = tx_speed;
+ ctx->rx_speed = rx_speed;
+
+ if ((tx_speed > 1000000) && (rx_speed > 1000000)) {
+ printk(KERN_INFO KBUILD_MODNAME
+ ": %s: %u mbit/s downlink "
+ "%u mbit/s uplink\n",
+ ctx->netdev->name,
+ (unsigned int)(rx_speed / 1000000U),
+ (unsigned int)(tx_speed / 1000000U));
+ } else {
+ printk(KERN_INFO KBUILD_MODNAME
+ ": %s: %u kbit/s downlink "
+ "%u kbit/s uplink\n",
+ ctx->netdev->name,
+ (unsigned int)(rx_speed / 1000U),
+ (unsigned int)(tx_speed / 1000U));
+ }
+ }
+}
+
+static void cdc_ncm_status(struct usbnet *dev, struct urb *urb)
+{
+ struct cdc_ncm_ctx *ctx;
+ struct usb_cdc_notification *event;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+
+ if (urb->actual_length < sizeof(*event))
+ return;
+
+ /* test for split data in 8-byte chunks */
+ if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
+ cdc_ncm_speed_change(ctx,
+ (struct connection_speed_change *)urb->transfer_buffer);
+ return;
+ }
+
+ event = urb->transfer_buffer;
+
+ switch (event->bNotificationType) {
+ case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+ /*
+ * According to the CDC NCM specification ch.7.1
+ * USB_CDC_NOTIFY_NETWORK_CONNECTION notification shall be
+ * sent by device after USB_CDC_NOTIFY_SPEED_CHANGE.
+ */
+ ctx->connected = event->wValue;
+
+ printk(KERN_INFO KBUILD_MODNAME ": %s: network connection:"
+ " %sconnected\n",
+ ctx->netdev->name, ctx->connected ? "" : "dis");
+
+ if (ctx->connected)
+ netif_carrier_on(dev->net);
+ else {
+ netif_carrier_off(dev->net);
+ ctx->tx_speed = ctx->rx_speed = 0;
+ }
+ break;
+
+ case USB_CDC_NOTIFY_SPEED_CHANGE:
+ if (urb->actual_length <
+ (sizeof(*event) + sizeof(struct connection_speed_change)))
+ set_bit(EVENT_STS_SPLIT, &dev->flags);
+ else
+ cdc_ncm_speed_change(ctx,
+ (struct connection_speed_change *) &event[1]);
+ break;
+
+ default:
+ dev_err(&dev->udev->dev, "NCM: unexpected "
+ "notification 0x%02x!\n", event->bNotificationType);
+ break;
+ }
+}
+
+static int cdc_ncm_check_connect(struct usbnet *dev)
+{
+ struct cdc_ncm_ctx *ctx;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ if (ctx == NULL)
+ return 1; /* disconnected */
+
+ return !ctx->connected;
+}
+
+static int
+cdc_ncm_probe(struct usb_interface *udev, const struct usb_device_id *prod)
+{
+ return usbnet_probe(udev, prod);
+}
+
+static void cdc_ncm_disconnect(struct usb_interface *intf)
+{
+ struct usbnet *dev = usb_get_intfdata(intf);
+
+ if (dev == NULL)
+ return; /* already disconnected */
+
+ usbnet_disconnect(intf);
+}
+
+static int cdc_ncm_manage_power(struct usbnet *dev, int status)
+{
+ dev->intf->needs_remote_wakeup = status;
+ return 0;
+}
+
+static const struct driver_info cdc_ncm_info = {
+ .description = "CDC NCM",
+ .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET,
+ .bind = cdc_ncm_bind,
+ .unbind = cdc_ncm_unbind,
+ .check_connect = cdc_ncm_check_connect,
+ .manage_power = cdc_ncm_manage_power,
+ .status = cdc_ncm_status,
+ .rx_fixup = cdc_ncm_rx_fixup,
+ .tx_fixup = cdc_ncm_tx_fixup,
+};
+
+static struct usb_driver cdc_ncm_driver = {
+ .name = "cdc_ncm",
+ .id_table = cdc_devs,
+ .probe = cdc_ncm_probe,
+ .disconnect = cdc_ncm_disconnect,
+ .suspend = usbnet_suspend,
+ .resume = usbnet_resume,
+ .supports_autosuspend = 1,
+};
+
+static struct ethtool_ops cdc_ncm_ethtool_ops = {
+ .get_drvinfo = cdc_ncm_get_drvinfo,
+ .get_link = usbnet_get_link,
+ .get_msglevel = usbnet_get_msglevel,
+ .set_msglevel = usbnet_set_msglevel,
+ .get_settings = usbnet_get_settings,
+ .set_settings = usbnet_set_settings,
+ .nway_reset = usbnet_nway_reset,
+};
+
+static int __init cdc_ncm_init(void)
+{
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION "\n");
+ return usb_register(&cdc_ncm_driver);
+}
+
+module_init(cdc_ncm_init);
+
+static void __exit cdc_ncm_exit(void)
+{
+ usb_deregister(&cdc_ncm_driver);
+}
+
+module_exit(cdc_ncm_exit);
+
+MODULE_AUTHOR("Hans Petter Selasky");
+MODULE_DESCRIPTION("USB CDC NCM host driver");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 812edf85d6d3..bed8fcedff49 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -997,6 +997,18 @@ static void packetizeRx(struct hso_net *odev, unsigned char *ip_pkt,
}
}
+static void fix_crc_bug(struct urb *urb, __le16 max_packet_size)
+{
+ static const u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
+ u32 rest = urb->actual_length % le16_to_cpu(max_packet_size);
+
+ if (((rest == 5) || (rest == 6)) &&
+ !memcmp(((u8 *)urb->transfer_buffer) + urb->actual_length - 4,
+ crc_check, 4)) {
+ urb->actual_length -= 4;
+ }
+}
+
/* Moving data from usb to kernel (in interrupt state) */
static void read_bulk_callback(struct urb *urb)
{
@@ -1025,17 +1037,8 @@ static void read_bulk_callback(struct urb *urb)
return;
}
- if (odev->parent->port_spec & HSO_INFO_CRC_BUG) {
- u32 rest;
- u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
- rest = urb->actual_length %
- le16_to_cpu(odev->in_endp->wMaxPacketSize);
- if (((rest == 5) || (rest == 6)) &&
- !memcmp(((u8 *) urb->transfer_buffer) +
- urb->actual_length - 4, crc_check, 4)) {
- urb->actual_length -= 4;
- }
- }
+ if (odev->parent->port_spec & HSO_INFO_CRC_BUG)
+ fix_crc_bug(urb, odev->in_endp->wMaxPacketSize);
/* do we even have a packet? */
if (urb->actual_length) {
@@ -1227,18 +1230,8 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb)
return;
if (status == 0) {
- if (serial->parent->port_spec & HSO_INFO_CRC_BUG) {
- u32 rest;
- u8 crc_check[4] = { 0xDE, 0xAD, 0xBE, 0xEF };
- rest =
- urb->actual_length %
- le16_to_cpu(serial->in_endp->wMaxPacketSize);
- if (((rest == 5) || (rest == 6)) &&
- !memcmp(((u8 *) urb->transfer_buffer) +
- urb->actual_length - 4, crc_check, 4)) {
- urb->actual_length -= 4;
- }
- }
+ if (serial->parent->port_spec & HSO_INFO_CRC_BUG)
+ fix_crc_bug(urb, serial->in_endp->wMaxPacketSize);
/* Valid data, handle RX data */
spin_lock(&serial->serial_lock);
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 1;
@@ -1741,7 +1734,6 @@ static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct hso_serial *serial = get_serial_by_tty(tty);
- void __user *uarg = (void __user *)arg;
int ret = 0;
D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
index b2bcf99e6f08..7d42f9a2c068 100644
--- a/drivers/net/usb/ipheth.c
+++ b/drivers/net/usb/ipheth.c
@@ -363,7 +363,7 @@ static int ipheth_tx(struct sk_buff *skb, struct net_device *net)
/* Paranoid */
if (skb->len > IPHETH_BUF_SIZE) {
- WARN(1, "%s: skb too large: %d bytes", __func__, skb->len);
+ WARN(1, "%s: skb too large: %d bytes\n", __func__, skb->len);
dev->net->stats.tx_dropped++;
dev_kfree_skb_irq(skb);
return NETDEV_TX_OK;
diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c
index a6281e3987b5..2b791392e788 100644
--- a/drivers/net/usb/mcs7830.c
+++ b/drivers/net/usb/mcs7830.c
@@ -1,5 +1,5 @@
/*
- * MOSCHIP MCS7830 based USB 2.0 Ethernet Devices
+ * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
*
* based on usbnet.c, asix.c and the vendor provided mcs7830 driver
*
@@ -11,6 +11,9 @@
*
* Definitions gathered from MOSCHIP, Data Sheet_7830DA.pdf (thanks!).
*
+ * 2010-12-19: add 7832 USB PID ("functionality same as MCS7830"),
+ * per active notification by manufacturer
+ *
* TODO:
* - support HIF_REG_CONFIG_SLEEPMODE/HIF_REG_CONFIG_TXENABLE (via autopm?)
* - implement ethtool_ops get_pauseparam/set_pauseparam
@@ -60,6 +63,7 @@
#define MCS7830_MAX_MCAST 64
#define MCS7830_VENDOR_ID 0x9710
+#define MCS7832_PRODUCT_ID 0x7832
#define MCS7830_PRODUCT_ID 0x7830
#define MCS7730_PRODUCT_ID 0x7730
@@ -351,7 +355,7 @@ static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode)
if (!ret)
ret = mcs7830_write_phy(dev, MII_BMCR,
BMCR_ANENABLE | BMCR_ANRESTART );
- return ret < 0 ? : 0;
+ return ret;
}
@@ -626,7 +630,7 @@ static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
}
static const struct driver_info moschip_info = {
- .description = "MOSCHIP 7830/7730 usb-NET adapter",
+ .description = "MOSCHIP 7830/7832/7730 usb-NET adapter",
.bind = mcs7830_bind,
.rx_fixup = mcs7830_rx_fixup,
.flags = FLAG_ETHER,
@@ -645,6 +649,10 @@ static const struct driver_info sitecom_info = {
static const struct usb_device_id products[] = {
{
+ USB_DEVICE(MCS7830_VENDOR_ID, MCS7832_PRODUCT_ID),
+ .driver_info = (unsigned long) &moschip_info,
+ },
+ {
USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID),
.driver_info = (unsigned long) &moschip_info,
},
diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
index 6710f09346d6..ef3667690b12 100644
--- a/drivers/net/usb/pegasus.c
+++ b/drivers/net/usb/pegasus.c
@@ -359,7 +359,7 @@ fail:
static int mdio_read(struct net_device *dev, int phy_id, int loc)
{
- pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
+ pegasus_t *pegasus = netdev_priv(dev);
u16 res;
read_mii_word(pegasus, phy_id, loc, &res);
@@ -397,7 +397,7 @@ fail:
static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
{
- pegasus_t *pegasus = (pegasus_t *) netdev_priv(dev);
+ pegasus_t *pegasus = netdev_priv(dev);
write_mii_word(pegasus, phy_id, loc, val);
}
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index d1ac15c95faf..ed1b43210584 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -802,10 +802,9 @@ static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf)
dev_dbg(&dev->udev->dev, "%s", __func__);
- /* Kill the timer then flush the work queue */
+ /* kill the timer and work */
del_timer_sync(&priv->sync_timer);
-
- flush_scheduled_work();
+ cancel_work_sync(&priv->sierra_net_kevent);
/* tell modem we are going away */
status = sierra_net_send_cmd(dev, priv->shdwn_msg,
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 65cb1abfbe57..bc86f4b6ecc2 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1163,9 +1163,8 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
{
- int len = skb->data - skb->head;
- u16 high_16 = (u16)(skb->csum_offset + skb->csum_start - len);
- u16 low_16 = (u16)(skb->csum_start - len);
+ u16 low_16 = (u16)skb_checksum_start_offset(skb);
+ u16 high_16 = low_16 + skb->csum_offset;
return (high_16 << 16) | low_16;
}
@@ -1193,7 +1192,7 @@ static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
if (skb->len <= 45) {
/* workaround - hardware tx checksum does not work
* properly with extremely small packets */
- long csstart = skb->csum_start - skb_headroom(skb);
+ long csstart = skb_checksum_start_offset(skb);
__wsum calc = csum_partial(skb->data + csstart,
skb->len - csstart, 0);
*((__sum16 *)(skb->data + csstart
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index c04d49e31f81..ed9a41643ff4 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -391,14 +391,19 @@ static inline void rx_process (struct usbnet *dev, struct sk_buff *skb)
goto error;
// else network stack removes extra byte if we forced a short packet
- if (skb->len)
- usbnet_skb_return (dev, skb);
- else {
- netif_dbg(dev, rx_err, dev->net, "drop\n");
-error:
- dev->net->stats.rx_errors++;
- skb_queue_tail (&dev->done, skb);
+ if (skb->len) {
+ /* all data was already cloned from skb inside the driver */
+ if (dev->driver_info->flags & FLAG_MULTI_PACKET)
+ dev_kfree_skb_any(skb);
+ else
+ usbnet_skb_return(dev, skb);
+ return;
}
+
+ netif_dbg(dev, rx_err, dev->net, "drop\n");
+error:
+ dev->net->stats.rx_errors++;
+ skb_queue_tail(&dev->done, skb);
}
/*-------------------------------------------------------------------------*/
@@ -971,7 +976,8 @@ static void tx_complete (struct urb *urb)
struct usbnet *dev = entry->dev;
if (urb->status == 0) {
- dev->net->stats.tx_packets++;
+ if (!(dev->driver_info->flags & FLAG_MULTI_PACKET))
+ dev->net->stats.tx_packets++;
dev->net->stats.tx_bytes += entry->length;
} else {
dev->net->stats.tx_errors++;
@@ -1044,8 +1050,13 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
if (info->tx_fixup) {
skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
if (!skb) {
- netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n");
- goto drop;
+ if (netif_msg_tx_err(dev)) {
+ netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n");
+ goto drop;
+ } else {
+ /* cdc_ncm collected packet; waits for more */
+ goto not_drop;
+ }
}
}
length = skb->len;
@@ -1067,13 +1078,18 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
/* don't assume the hardware handles USB_ZERO_PACKET
* NOTE: strictly conforming cdc-ether devices should expect
* the ZLP here, but ignore the one-byte packet.
+ * NOTE2: CDC NCM specification is different from CDC ECM when
+ * handling ZLP/short packets, so cdc_ncm driver will make short
+ * packet itself if needed.
*/
if (length % dev->maxpacket == 0) {
if (!(info->flags & FLAG_SEND_ZLP)) {
- urb->transfer_buffer_length++;
- if (skb_tailroom(skb)) {
- skb->data[skb->len] = 0;
- __skb_put(skb, 1);
+ if (!(info->flags & FLAG_MULTI_PACKET)) {
+ urb->transfer_buffer_length++;
+ if (skb_tailroom(skb)) {
+ skb->data[skb->len] = 0;
+ __skb_put(skb, 1);
+ }
}
} else
urb->transfer_flags |= URB_ZERO_PACKET;
@@ -1122,6 +1138,7 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", retval);
drop:
dev->net->stats.tx_dropped++;
+not_drop:
if (skb)
dev_kfree_skb_any (skb);
usb_free_urb (urb);
@@ -1231,8 +1248,7 @@ void usbnet_disconnect (struct usb_interface *intf)
net = dev->net;
unregister_netdev (net);
- /* we don't hold rtnl here ... */
- flush_scheduled_work ();
+ cancel_work_sync(&dev->kevent);
if (dev->driver_info->unbind)
dev->driver_info->unbind (dev, intf);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 02:25:29 +0000