diff options
Diffstat (limited to 'package/system/sierra-directip/src/sierra_net.c')
| -rw-r--r-- | package/system/sierra-directip/src/sierra_net.c | 1123 |
1 files changed, 0 insertions, 1123 deletions
diff --git a/package/system/sierra-directip/src/sierra_net.c b/package/system/sierra-directip/src/sierra_net.c deleted file mode 100644 index f6057d918..000000000 --- a/package/system/sierra-directip/src/sierra_net.c +++ /dev/null @@ -1,1123 +0,0 @@ -/* - * USB-to-WWAN Driver for Sierra Wireless modems - * - * Copyright (C) 2008 - 2011 Paxton Smith, Matthew Safar, Rory Filer - * <linux@sierrawireless.com> - * - * Portions of this based on the cdc_ether driver by David Brownell (2003-2005) - * and Ole Andre Vadla Ravnas (ActiveSync) (2006). - * - * IMPORTANT DISCLAIMER: This driver is not commercially supported by - * Sierra Wireless. Use at your own risk. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#define DRIVER_VERSION "v.3.2" -#define DRIVER_AUTHOR "Paxton Smith, Matthew Safar, Rory Filer" -#define DRIVER_DESC "USB-to-WWAN Driver for Sierra Wireless modems" -static const char driver_name[] = "sierra_net"; - -/* if defined debug messages enabled */ -/*#define DEBUG*/ -/* more debug messages */ -/*#define VERBOSE*/ -/* Uncomment to force power level set to auto when attaching a device */ -/*#define POWER_LEVEL_AUTO*/ - -#include <linux/module.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/usb.h> -#include <linux/usb/cdc.h> -#include <net/ip.h> -#include <net/udp.h> -#include <asm/unaligned.h> -#include <linux/usb/usbnet.h> - -#define SWI_USB_REQUEST_GET_FW_ATTR 0x06 -#define SWI_GET_FW_ATTR_MASK 0x08 -#define SWI_GET_FW_ATTR_APM 0x2 - -/* atomic counter partially included in MAC address to make sure 2 devices - * do not end up with the same MAC - concept breaks in case of > 255 ifaces - */ -static atomic_t iface_counter = ATOMIC_INIT(0); - -/* - * SYNC Timer Delay definition used to set the expiry time - */ -#define SIERRA_NET_SYNCDELAY (2*HZ) - -/* Max. MTU supported. The modem buffers are limited to 1500 */ -#define SIERRA_NET_MAX_SUPPORTED_MTU 1500 - -/* The SIERRA_NET_USBCTL_BUF_LEN defines a buffer size allocated for control - * message reception ... and thus the max. received packet. - * (May be the cause for parse_hip returning -EINVAL) - */ -#define SIERRA_NET_USBCTL_BUF_LEN 1024 - -/* The SIERRA_NET_RX_URB_SZ defines the receive urb size - * for optimal throughput. - */ -#define SIERRA_NET_RX_URB_SZ 1540 - -/* list of interface numbers - used for constructing interface lists */ -struct sierra_net_iface_info { - const u32 infolen; /* number of interface numbers on list */ - const u8 *ifaceinfo; /* pointer to the array holding the numbers */ -}; - -struct sierra_net_info_data { - u16 rx_urb_size; - struct sierra_net_iface_info whitelist; -}; - -/* Private data structure */ -struct sierra_net_data { - - u8 ethr_hdr_tmpl[ETH_HLEN]; /* ethernet header template for rx'd pkts */ - - u16 link_up; /* air link up or down */ - u8 tx_hdr_template[4]; /* part of HIP hdr for tx'd packets */ - - u8 sync_msg[4]; /* SYNC message */ - u8 shdwn_msg[4]; /* Shutdown message */ - - /* Backpointer to the container */ - struct usbnet *usbnet; - - u8 ifnum; /* interface number */ - -/* Bit masks, must be a power of 2 */ -#define SIERRA_NET_EVENT_RESP_AVAIL 0x01 -#define SIERRA_NET_TIMER_EXPIRY 0x02 - unsigned long kevent_flags; - struct work_struct sierra_net_kevent; - struct timer_list sync_timer; /* For retrying SYNC sequence */ -}; - -struct param { - int is_present; - union { - void *ptr; - u32 dword; - u16 word; - u8 byte; - }; -}; - -/* HIP message type */ -#define SIERRA_NET_HIP_EXTENDEDID 0x7F -#define SIERRA_NET_HIP_HSYNC_ID 0x60 /* Modem -> host */ -#define SIERRA_NET_HIP_RESTART_ID 0x62 /* Modem -> host */ -#define SIERRA_NET_HIP_MSYNC_ID 0x20 /* Host -> modem */ -#define SIERRA_NET_HIP_SHUTD_ID 0x26 /* Host -> modem */ - -#define SIERRA_NET_HIP_EXT_IP_IN_ID 0x0202 -#define SIERRA_NET_HIP_EXT_IP_OUT_ID 0x0002 - -/* 3G UMTS Link Sense Indication definitions */ -#define SIERRA_NET_HIP_LSI_UMTSID 0x78 - -/* Reverse Channel Grant Indication HIP message */ -#define SIERRA_NET_HIP_RCGI 0x64 - -/* LSI Protocol types */ -#define SIERRA_NET_PROTOCOL_UMTS 0x01 -/* LSI Coverage */ -#define SIERRA_NET_COVERAGE_NONE 0x00 -#define SIERRA_NET_COVERAGE_NOPACKET 0x01 - -/* LSI Session */ -#define SIERRA_NET_SESSION_IDLE 0x00 -/* LSI Link types */ -#define SIERRA_NET_AS_LINK_TYPE_IPv4 0x00 -#define SIERRA_NET_AS_LINK_TYPE_IPv6 0x02 - -struct lsi_umts { - u8 protocol; - u8 unused1; - __be16 length; - /* eventually use a union for the rest - assume umts for now */ - u8 coverage; - u8 unused2[41]; - u8 session_state; - u8 unused3[33]; - u8 link_type; - u8 pdp_addr_len; /* NW-supplied PDP address len */ - u8 pdp_addr[16]; /* NW-supplied PDP address (bigendian)) */ - u8 unused4[23]; - u8 dns1_addr_len; /* NW-supplied 1st DNS address len (bigendian) */ - u8 dns1_addr[16]; /* NW-supplied 1st DNS address */ - u8 dns2_addr_len; /* NW-supplied 2nd DNS address len */ - u8 dns2_addr[16]; /* NW-supplied 2nd DNS address (bigendian)*/ - u8 wins1_addr_len; /* NW-supplied 1st Wins address len */ - u8 wins1_addr[16]; /* NW-supplied 1st Wins address (bigendian)*/ - u8 wins2_addr_len; /* NW-supplied 2nd Wins address len */ - u8 wins2_addr[16]; /* NW-supplied 2nd Wins address (bigendian) */ - u8 unused5[4]; - u8 gw_addr_len; /* NW-supplied GW address len */ - u8 gw_addr[16]; /* NW-supplied GW address (bigendian) */ - u8 reserved[8]; -} __packed; - -#define SIERRA_NET_LSI_COMMON_LEN 4 -#define SIERRA_NET_LSI_UMTS_LEN (sizeof(struct lsi_umts)) -#define SIERRA_NET_LSI_UMTS_STATUS_LEN \ - (SIERRA_NET_LSI_UMTS_LEN - SIERRA_NET_LSI_COMMON_LEN) - -/* Forward definitions */ -static void sierra_sync_timer(unsigned long syncdata); -static int sierra_net_change_mtu(struct net_device *net, int new_mtu); - -/* Our own net device operations structure */ -static const struct net_device_ops sierra_net_device_ops = { - .ndo_open = usbnet_open, - .ndo_stop = usbnet_stop, - .ndo_start_xmit = usbnet_start_xmit, - .ndo_tx_timeout = usbnet_tx_timeout, - .ndo_change_mtu = sierra_net_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -/* get private data associated with passed in usbnet device */ -static inline struct sierra_net_data *sierra_net_get_private(struct usbnet *dev) -{ - return (struct sierra_net_data *)dev->data[0]; -} - -/* set private data associated with passed in usbnet device */ -static inline void sierra_net_set_private(struct usbnet *dev, - struct sierra_net_data *priv) -{ - dev->data[0] = (unsigned long)priv; -} - -/* is packet IP */ -static inline int is_ip(struct sk_buff *skb) -{ - return ((skb->protocol == cpu_to_be16(ETH_P_IP)) || - (skb->protocol == cpu_to_be16(ETH_P_IPV6))); -} - -/* - * check passed in packet and make sure that: - * - it is linear (no scatter/gather) - * - it is ethernet (mac_header properly set) - */ -static int check_ethip_packet(struct sk_buff *skb, struct usbnet *dev) -{ - skb_reset_mac_header(skb); /* ethernet header */ - - if (skb_is_nonlinear(skb)) { - netdev_err(dev->net, "Non linear buffer-dropping\n"); - return 0; - } - - if (!pskb_may_pull(skb, ETH_HLEN)) - return 0; - skb->protocol = eth_hdr(skb)->h_proto; - - return 1; -} - -static const u8 *save16bit(struct param *p, const u8 *datap) -{ - p->is_present = 1; - p->word = get_unaligned_be16(datap); - return datap + sizeof(p->word); -} - -static const u8 *save8bit(struct param *p, const u8 *datap) -{ - p->is_present = 1; - p->byte = *datap; - return datap + sizeof(p->byte); -} - -/*----------------------------------------------------------------------------* - * BEGIN HIP * - *----------------------------------------------------------------------------*/ -/* HIP header */ -#define SIERRA_NET_HIP_HDR_LEN 4 -/* Extended HIP header */ -#define SIERRA_NET_HIP_EXT_HDR_LEN 6 - -struct hip_hdr { - int hdrlen; - struct param payload_len; - struct param msgid; - struct param msgspecific; - struct param extmsgid; -}; - -static int parse_hip(const u8 *buf, const u32 buflen, struct hip_hdr *hh) -{ - const u8 *curp = buf; - int padded; - - if (buflen < SIERRA_NET_HIP_HDR_LEN) - return -EPROTO; - - curp = save16bit(&hh->payload_len, curp); - curp = save8bit(&hh->msgid, curp); - curp = save8bit(&hh->msgspecific, curp); - - padded = hh->msgid.byte & 0x80; - hh->msgid.byte &= 0x7F; /* 7 bits */ - - hh->extmsgid.is_present = (hh->msgid.byte == SIERRA_NET_HIP_EXTENDEDID); - if (hh->extmsgid.is_present) { - if (buflen < SIERRA_NET_HIP_EXT_HDR_LEN) - return -EPROTO; - - hh->payload_len.word &= 0x3FFF; /* 14 bits */ - - curp = save16bit(&hh->extmsgid, curp); - hh->extmsgid.word &= 0x03FF; /* 10 bits */ - - hh->hdrlen = SIERRA_NET_HIP_EXT_HDR_LEN; - } else { - hh->payload_len.word &= 0x07FF; /* 11 bits */ - hh->hdrlen = SIERRA_NET_HIP_HDR_LEN; - } - - if (padded) { - hh->hdrlen++; - hh->payload_len.word--; - } - - /* if real packet shorter than the claimed length */ - if (buflen < (hh->hdrlen + hh->payload_len.word)) - return -EINVAL; - - return 0; -} - -static void build_hip(u8 *buf, const u16 payloadlen, - struct sierra_net_data *priv) -{ - /* the following doesn't have the full functionality. We - * currently build only one kind of header, so it is faster this way - */ - put_unaligned_be16(payloadlen, buf); - memcpy(buf+2, priv->tx_hdr_template, sizeof(priv->tx_hdr_template)); -} -/*----------------------------------------------------------------------------* - * END HIP * - *----------------------------------------------------------------------------*/ -/* This should come out before going to kernel.org */ -static void sierra_net_printk_buf(u8 *buf, u16 len) -{ -#ifdef VERBOSE - u16 i; - u16 k; - - for (i = k = 0; i < len / 4; i++, k += 4) { - printk(KERN_DEBUG "%02x%02x%02x%02x ", - buf[k+0], buf[k+1], buf[k+2], buf[k+3]); - } - - for (; k < len; k++) - printk(KERN_DEBUG "%02x", buf[k]); - - printk("\n"); -#endif -} - -static int sierra_net_send_cmd(struct usbnet *dev, - u8 *cmd, int cmdlen, const char * cmd_name) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - int status; - - usb_autopm_get_interface(dev->intf); - status = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), - USB_CDC_SEND_ENCAPSULATED_COMMAND, - USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE, 0, - priv->ifnum, cmd, cmdlen, USB_CTRL_SET_TIMEOUT); - usb_autopm_put_interface(dev->intf); - - if (status != cmdlen && status != -ENODEV) - netdev_err(dev->net, "Submit %s failed %d\n", cmd_name, status); - - return status; -} - -static int sierra_net_send_sync(struct usbnet *dev) -{ - int status; - struct sierra_net_data *priv = sierra_net_get_private(dev); - - dev_dbg(&dev->udev->dev, "%s", __func__); - - status = sierra_net_send_cmd(dev, priv->sync_msg, - sizeof(priv->sync_msg), "SYNC"); - return status; -} - -static void sierra_net_send_shutdown(struct usbnet *dev) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - - dev_dbg(&dev->udev->dev, "%s", __func__); - - sierra_net_send_cmd(dev, priv->shdwn_msg, - sizeof(priv->shdwn_msg), "Shutdown"); -} - -static void sierra_net_set_ctx_index(struct sierra_net_data *priv, u8 ctx_ix) -{ - dev_dbg(&(priv->usbnet->udev->dev), "%s %d", __func__, ctx_ix); - priv->tx_hdr_template[0] = 0x3F; - priv->tx_hdr_template[1] = ctx_ix; - *((u16 *)&priv->tx_hdr_template[2]) = - cpu_to_be16(SIERRA_NET_HIP_EXT_IP_OUT_ID); -} - -static inline int sierra_net_is_valid_addrlen(u8 len) -{ - return (len == sizeof(struct in_addr)); -} - -static int sierra_net_parse_lsi(struct usbnet *dev, char *data, int datalen) -{ - struct lsi_umts *lsi = (struct lsi_umts *)data; - - if (datalen < sizeof(struct lsi_umts)) { - netdev_err(dev->net, "%s: Data length %d, exp %Zu\n", - __func__, datalen, - sizeof(struct lsi_umts)); - return -1; - } - - if (lsi->length != cpu_to_be16(SIERRA_NET_LSI_UMTS_STATUS_LEN)) { - netdev_err(dev->net, "%s: LSI_UMTS_STATUS_LEN %d, exp %u\n", - __func__, be16_to_cpu(lsi->length), - (u32)SIERRA_NET_LSI_UMTS_STATUS_LEN); - return -1; - } - - /* Validate the protocol - only support UMTS for now */ - if (lsi->protocol != SIERRA_NET_PROTOCOL_UMTS) { - netdev_err(dev->net, "Protocol unsupported, 0x%02x\n", - lsi->protocol); - return -1; - } - - /* Validate the link type */ - if ((lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv4) && - (lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv6)) { - netdev_err(dev->net, "Link unavailable: 0x%02x", - lsi->link_type); - return 0; - } - - /* Validate the coverage */ - if (lsi->coverage == SIERRA_NET_COVERAGE_NONE - || lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) { - netdev_err(dev->net, "No coverage, 0x%02x\n", lsi->coverage); - return 0; - } - - /* Validate the session state */ - if (lsi->session_state == SIERRA_NET_SESSION_IDLE) { - netdev_err(dev->net, "Session idle, 0x%02x\n", - lsi->session_state); - return 0; - } - - /* Set link_sense true */ - return 1; -} - -static void sierra_net_handle_lsi(struct usbnet *dev, char *data, - struct hip_hdr *hh) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - int link_up; - - link_up = sierra_net_parse_lsi(dev, data + hh->hdrlen, - hh->payload_len.word); - if (link_up < 0) { - netdev_err(dev->net, "Invalid LSI\n"); - return; - } - if (link_up) { - sierra_net_set_ctx_index(priv, hh->msgspecific.byte); - priv->link_up = 1; - netif_carrier_on(dev->net); - } else { - priv->link_up = 0; - netif_carrier_off(dev->net); - } -} - -static void sierra_net_dosync(struct usbnet *dev) -{ - int status; - struct sierra_net_data *priv = sierra_net_get_private(dev); - - dev_dbg(&dev->udev->dev, "%s", __func__); - - /* tell modem we are ready */ - status = sierra_net_send_sync(dev); - if (status < 0) - netdev_err(dev->net, - "Send SYNC failed, status %d\n", status); - status = sierra_net_send_sync(dev); - if (status < 0) - netdev_err(dev->net, - "Send SYNC failed, status %d\n", status); - - /* Now, start a timer and make sure we get the Restart Indication */ - priv->sync_timer.function = sierra_sync_timer; - priv->sync_timer.data = (unsigned long) dev; - priv->sync_timer.expires = jiffies + SIERRA_NET_SYNCDELAY; - add_timer(&priv->sync_timer); -} - -static void sierra_net_kevent(struct work_struct *work) -{ - struct sierra_net_data *priv = - container_of(work, struct sierra_net_data, sierra_net_kevent); - struct usbnet *dev = priv->usbnet; - int len; - int err; - u8 *buf; - u8 ifnum; - - if (test_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags)) { - clear_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags); - - /* Query the modem for the LSI message */ - buf = kzalloc(SIERRA_NET_USBCTL_BUF_LEN, GFP_KERNEL); - if (!buf) { - netdev_err(dev->net, - "failed to allocate buf for LS msg\n"); - return; - } - ifnum = priv->ifnum; - usb_autopm_get_interface(dev->intf); - len = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), - USB_CDC_GET_ENCAPSULATED_RESPONSE, - USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE, - 0, ifnum, buf, SIERRA_NET_USBCTL_BUF_LEN, - USB_CTRL_SET_TIMEOUT); - usb_autopm_put_interface(dev->intf); - - if (unlikely(len < 0)) { - netdev_err(dev->net, - "usb_control_msg failed, status %d\n", len); - } else { - struct hip_hdr hh; - - dev_dbg(&dev->udev->dev, "%s: Received status message," - " %04x bytes", __func__, len); - sierra_net_printk_buf(buf, len); - - err = parse_hip(buf, len, &hh); - if (err) { - netdev_err(dev->net, "%s: Bad packet," - " parse result %d\n", __func__, err); - kfree(buf); - return; - } - - /* Validate packet length */ - if (len != hh.hdrlen + hh.payload_len.word) { - netdev_err(dev->net, "%s: Bad packet, received" - " %d, expected %d\n", __func__, len, - hh.hdrlen + hh.payload_len.word); - kfree(buf); - return; - } - - /* Switch on received message types */ - switch (hh.msgid.byte) { - case SIERRA_NET_HIP_LSI_UMTSID: - dev_dbg(&dev->udev->dev, "LSI for ctx:%d", - hh.msgspecific.byte); - sierra_net_handle_lsi(dev, buf, &hh); - break; - case SIERRA_NET_HIP_RESTART_ID: - dev_dbg(&dev->udev->dev, "Restart reported: %d," - " stopping sync timer", - hh.msgspecific.byte); - /* Got sync resp - stop timer & clear mask */ - del_timer_sync(&priv->sync_timer); - clear_bit(SIERRA_NET_TIMER_EXPIRY, - &priv->kevent_flags); - break; - case SIERRA_NET_HIP_HSYNC_ID: - dev_dbg(&dev->udev->dev, "SYNC received"); - err = sierra_net_send_sync(dev); - if (err < 0) - netdev_err(dev->net, - "Send SYNC failed %d\n", err); - break; - case SIERRA_NET_HIP_EXTENDEDID: - netdev_err(dev->net, "Unrecognized HIP msg, " - "extmsgid 0x%04x\n", hh.extmsgid.word); - break; - case SIERRA_NET_HIP_RCGI: - /* Ignored. It is a firmware - * workaround to solve a Windows driver bug and - * may be removed in the future. - */ - break; - default: - netdev_err(dev->net, "Unrecognized HIP msg, " - "msgid 0x%02x\n", hh.msgid.byte); - break; - } - } - kfree(buf); - } - /* The sync timer bit might be set */ - if (test_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags)) { - clear_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags); - dev_dbg(&dev->udev->dev, "Deferred sync timer expiry"); - sierra_net_dosync(priv->usbnet); - } - - if (priv->kevent_flags) - dev_dbg(&dev->udev->dev, "sierra_net_kevent done, " - "kevent_flags = 0x%lx", priv->kevent_flags); -} - -static void sierra_net_defer_kevent(struct usbnet *dev, int work) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - - set_bit(work, &priv->kevent_flags); - if (!schedule_work(&priv->sierra_net_kevent)) - dev_dbg(&dev->udev->dev, "sierra_net_kevent %d may have been dropped", work); - else - dev_dbg(&dev->udev->dev, "sierra_net_kevent %d scheduled", work); -} - -/* - * Sync Retransmit Timer Handler. On expiry, kick the work queue - */ -void sierra_sync_timer(unsigned long syncdata) -{ - struct usbnet *dev = (struct usbnet *)syncdata; - - dev_dbg(&dev->udev->dev, "%s", __func__); - /* Kick the tasklet */ - sierra_net_defer_kevent(dev, SIERRA_NET_TIMER_EXPIRY); -} - -static void sierra_net_status(struct usbnet *dev, struct urb *urb) -{ - struct usb_cdc_notification *event; - - dev_dbg(&dev->udev->dev, "%s", __func__); - sierra_net_printk_buf(urb->transfer_buffer, urb->actual_length); - - if (urb->actual_length < sizeof *event) - return; - - /* Add cases to handle other standard notifications. */ - event = urb->transfer_buffer; - switch (event->bNotificationType) { - case USB_CDC_NOTIFY_NETWORK_CONNECTION: - case USB_CDC_NOTIFY_SPEED_CHANGE: - /* USB 305 sends those */ - break; - case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: - sierra_net_defer_kevent(dev, SIERRA_NET_EVENT_RESP_AVAIL); - break; - default: - netdev_err(dev->net, ": unexpected notification %02x!\n", - event->bNotificationType); - break; - } -} - -static void sierra_net_get_drvinfo(struct net_device *net, - struct ethtool_drvinfo *info) -{ - /* Inherit standard device info */ - usbnet_get_drvinfo(net, info); - strncpy(info->driver, driver_name, sizeof info->driver); - strncpy(info->version, DRIVER_VERSION, sizeof info->version); -} - -static u32 sierra_net_get_link(struct net_device *net) -{ - struct usbnet *dev = netdev_priv(net); - /* Report link is down whenever the interface is down */ - return sierra_net_get_private(dev)->link_up && netif_running(net); -} - -static struct ethtool_ops sierra_net_ethtool_ops = { - .get_drvinfo = sierra_net_get_drvinfo, - .get_link = sierra_net_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, -}; - -/* MTU can not be more than 1500 bytes, enforce it. */ -static int sierra_net_change_mtu(struct net_device *net, int new_mtu) -{ - if (new_mtu > SIERRA_NET_MAX_SUPPORTED_MTU) - return -EINVAL; - - return usbnet_change_mtu(net, new_mtu); -} - -static int is_whitelisted(const u8 ifnum, - const struct sierra_net_iface_info *whitelist) -{ - if (whitelist) { - const u8 *list = whitelist->ifaceinfo; - int i; - - for (i = 0; i < whitelist->infolen; i++) { - if (list[i] == ifnum) - return 1; - } - } - return 0; -} - -static int sierra_net_get_fw_attr(struct usbnet *dev, u16 *datap) -{ - int result = 0; - u16 *attrdata; - - attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL); - if (!attrdata) - return -ENOMEM; - - usb_autopm_get_interface(dev->intf); - result = usb_control_msg( - dev->udev, - usb_rcvctrlpipe(dev->udev, 0), - /* _u8 vendor specific request */ - SWI_USB_REQUEST_GET_FW_ATTR, - USB_DIR_IN | USB_TYPE_VENDOR, /* __u8 request type */ - 0x0000, /* __u16 value not used */ - 0x0000, /* __u16 index not used */ - attrdata, /* char *data */ - sizeof(*attrdata), /* __u16 size */ - USB_CTRL_SET_TIMEOUT); /* int timeout */ - usb_autopm_put_interface(dev->intf); - - if (result < 0) { - kfree(attrdata); - return -EIO; - } - - *datap = *attrdata; - - kfree(attrdata); - return result; -} - -static int sierra_net_manage_power(struct usbnet *dev, int on) -{ - dev->intf->needs_remote_wakeup = on; - return 0; -} - -/* - * collects the bulk endpoints, the status endpoint. - */ -static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf) -{ - u8 ifacenum; - u8 numendpoints; - u16 fwattr = 0; - int status; - struct ethhdr *eth; - struct sierra_net_data *priv; - static const u8 sync_tmplate[sizeof(priv->sync_msg)] = { - 0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00}; - static const u8 shdwn_tmplate[sizeof(priv->shdwn_msg)] = { - 0x00, 0x00, SIERRA_NET_HIP_SHUTD_ID, 0x00}; - - struct sierra_net_info_data *data = - (struct sierra_net_info_data *)dev->driver_info->data; - - dev_dbg(&dev->udev->dev, "%s", __func__); - - ifacenum = intf->cur_altsetting->desc.bInterfaceNumber; - /* We only accept certain interfaces */ - if (!is_whitelisted(ifacenum, &data->whitelist)) { - dev_dbg(&dev->udev->dev, "Ignoring interface: %d", ifacenum); - return -ENODEV; - } - numendpoints = intf->cur_altsetting->desc.bNumEndpoints; - /* We have three endpoints, bulk in and out, and a status */ - if (numendpoints != 3) { - dev_err(&dev->udev->dev, "Expected 3 endpoints, found: %d", - numendpoints); - return -ENODEV; - } - /* Status endpoint set in usbnet_get_endpoints() */ - dev->status = NULL; - status = usbnet_get_endpoints(dev, intf); - if (status < 0) { - dev_err(&dev->udev->dev, "Error in usbnet_get_endpoints (%d)", - status); - return -ENODEV; - } - /* Initialize sierra private data */ - priv = kzalloc(sizeof *priv, GFP_KERNEL); - if (!priv) { - dev_err(&dev->udev->dev, "No memory"); - return -ENOMEM; - } - - priv->usbnet = dev; - priv->ifnum = ifacenum; - /* override change_mtu with our own routine - need to bound check */ - /* replace structure to our own structure where we have our own - * routine - need to bound check - */ - dev->net->netdev_ops = &sierra_net_device_ops; - - /* change MAC addr to include, ifacenum, and to be unique */ - dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter); - dev->net->dev_addr[ETH_ALEN-1] = ifacenum; - - /* we will have to manufacture ethernet headers, prepare template */ - eth = (struct ethhdr *)priv->ethr_hdr_tmpl; - memcpy(ð->h_dest, dev->net->dev_addr, ETH_ALEN); - eth->h_proto = cpu_to_be16(ETH_P_IP); - - /* prepare shutdown message template */ - memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg)); - /* set context index initially to 0 - prepares tx hdr template */ - sierra_net_set_ctx_index(priv, 0); - - /* decrease the rx_urb_size and max_tx_size to 4k on USB 1.1 */ - dev->rx_urb_size = data->rx_urb_size; - if (dev->udev->speed != USB_SPEED_HIGH) - dev->rx_urb_size = min_t(size_t, 4096, data->rx_urb_size); - - dev->net->hard_header_len += SIERRA_NET_HIP_EXT_HDR_LEN; - dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; - - /* Set up the netdev */ - dev->net->flags |= IFF_NOARP; - dev->net->flags |= IFF_MULTICAST; - dev->net->ethtool_ops = &sierra_net_ethtool_ops; - netif_carrier_off(dev->net); - - sierra_net_set_private(dev, priv); - - priv->kevent_flags = 0; - - /* Use the shared workqueue */ - INIT_WORK(&priv->sierra_net_kevent, sierra_net_kevent); - - /* Only need to do this once */ - init_timer(&priv->sync_timer); - /* verify fw attributes */ - status = sierra_net_get_fw_attr(dev, &fwattr); - dev_dbg(&dev->udev->dev, "Fw attr: %x\n", fwattr); - if (status == sizeof(fwattr) && (fwattr & SWI_GET_FW_ATTR_APM)) { -/******************************************************************************* - * If you want the default /sys/bus/usb/devices/.../.../power/level to be forced - * to auto, the following needs to be compiled in. - */ -#ifdef POWER_LEVEL_AUTO - /* make power level default be 'auto' */ - dev_dbg(&dev->udev->dev, "Enabling APM"); - usb_enable_autosuspend(dev->udev); -#endif - } else { - dev_info(&intf->dev, "Disabling APM - not supported"); - usb_disable_autosuspend(dev->udev); - } - /* test whether firmware supports DHCP */ - if (!(status == sizeof(fwattr) && (fwattr & SWI_GET_FW_ATTR_MASK))) { - /* found incompatible firmware version */ - dev_err(&dev->udev->dev, "Incompatible driver and firmware" - " versions\n"); - kfree(priv); - return -ENODEV; - } - /* prepare sync message from template */ - memcpy(priv->sync_msg, sync_tmplate, sizeof(priv->sync_msg)); - - return 0; -} - -static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - - dev_dbg(&dev->udev->dev, "%s", __func__); - - sierra_net_set_private(dev, NULL); - - kfree(priv); -} - -static int sierra_net_open(struct usbnet *dev) -{ - dev_dbg(&dev->udev->dev, "%s", __func__); - - /* initiate the sync sequence */ - sierra_net_dosync(dev); - - return 0; -} - -static int sierra_net_stop(struct usbnet *dev) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - - dev_dbg(&dev->udev->dev, "%s", __func__); - - /* Kill the timer then flush the work queue */ - del_timer_sync(&priv->sync_timer); - - cancel_work_sync(&priv->sierra_net_kevent); - - /* tell modem we are going away */ - sierra_net_send_shutdown(dev); - - return 0; -} - -static struct sk_buff *sierra_net_skb_clone(struct usbnet *dev, - struct sk_buff *skb, int len) -{ - struct sk_buff *new_skb; - - /* clone skb */ - new_skb = skb_clone(skb, GFP_ATOMIC); - - /* remove len bytes from original */ - skb_pull(skb, len); - - /* trim next packet to it's length */ - if (new_skb) { - skb_trim(new_skb, len); - } else { - if (netif_msg_rx_err(dev)) - netdev_err(dev->net, "failed to get skb\n"); - dev->net->stats.rx_dropped++; - } - - return new_skb; -} - -/* ---------------------------- Receive data path ----------------------*/ -static int sierra_net_rx_fixup(struct usbnet *dev, struct sk_buff *skb) -{ - int err; - struct hip_hdr hh; - struct sk_buff *new_skb; - struct ethhdr *eth; - struct iphdr *ip; - - dev_dbg(&dev->udev->dev, "%s", __func__); - - sierra_net_printk_buf(skb->data, skb->len); - - /* could contain multiple packets */ - while (likely(skb->len)) { - err = parse_hip(skb->data, skb->len, &hh); - if (err) { - if (netif_msg_rx_err(dev)) - netdev_err(dev->net, "Invalid HIP header %d\n", - err); - /* dev->net->stats.rx_errors incremented by caller */ - dev->net->stats.rx_length_errors++; - return 0; - } - - /* Validate Extended HIP header */ - if (!hh.extmsgid.is_present - || hh.extmsgid.word != SIERRA_NET_HIP_EXT_IP_IN_ID) { - if (netif_msg_rx_err(dev)) - netdev_err(dev->net, "HIP/ETH: Invalid pkt\n"); - - dev->net->stats.rx_frame_errors++; - /* dev->net->stats.rx_errors incremented by caller */; - return 0; - } - - skb_pull(skb, hh.hdrlen); - - /* We are going to accept this packet, prepare it */ - memcpy(skb->data, sierra_net_get_private(dev)->ethr_hdr_tmpl, - ETH_HLEN); - - ip = (struct iphdr *)((char *)skb->data + ETH_HLEN); - if(ip->version == 6) { - eth = (struct ethhdr *)skb->data; - eth->h_proto = cpu_to_be16(ETH_P_IPV6); - } - - /* Last packet in batch handled by usbnet */ - if (hh.payload_len.word == skb->len) - return 1; - - new_skb = sierra_net_skb_clone(dev, skb, hh.payload_len.word); - if (new_skb) - usbnet_skb_return(dev, new_skb); - - } /* while */ - - return 0; -} - -/* ---------------------------- Transmit data path ----------------------*/ -struct sk_buff *sierra_net_tx_fixup(struct usbnet *dev, struct sk_buff *skb, - gfp_t flags) -{ - struct sierra_net_data *priv = sierra_net_get_private(dev); - u16 len; - bool need_tail; - - dev_dbg(&dev->udev->dev, "%s", __func__); - if (priv->link_up && check_ethip_packet(skb, dev) && is_ip(skb)) { - /* enough head room as is? */ - if (SIERRA_NET_HIP_EXT_HDR_LEN <= skb_headroom(skb)) { - /* Save the Eth/IP length and set up HIP hdr */ - len = skb->len; - skb_push(skb, SIERRA_NET_HIP_EXT_HDR_LEN); - /* Handle ZLP issue */ - need_tail = ((len + SIERRA_NET_HIP_EXT_HDR_LEN) - % dev->maxpacket == 0); - if (need_tail) { - if (unlikely(skb_tailroom(skb) == 0)) { - netdev_err(dev->net, "tx_fixup:" - "no room for packet\n"); - dev_kfree_skb_any(skb); - return NULL; - } else { - skb->data[skb->len] = 0; - __skb_put(skb, 1); - len = len + 1; - } - } - build_hip(skb->data, len, priv); - - sierra_net_printk_buf(skb->data, skb->len); - return skb; - } else { - /* - * compensate in the future if necessary - */ - netdev_err(dev->net, "tx_fixup: no room for HIP\n"); - } /* headroom */ - } - - if (!priv->link_up) - dev->net->stats.tx_carrier_errors++; - - /* tx_dropped incremented by usbnet */ - - /* filter the packet out, release it */ - dev_kfree_skb_any(skb); - return NULL; -} - -static int sierra_net_reset_resume(struct usb_interface *intf) -{ - struct usbnet *dev = usb_get_intfdata(intf); - netdev_err(dev->net, "%s\n", __func__); - return usbnet_resume(intf); -} - -static const u8 sierra_net_ifnum_list[] = { 7, 10, 11 }; -static const struct sierra_net_info_data sierra_net_info_data_direct_ip = { - /* .rx_urb_size = 8 * 1024, */ - .rx_urb_size = SIERRA_NET_RX_URB_SZ, - .whitelist = { - .infolen = ARRAY_SIZE(sierra_net_ifnum_list), - .ifaceinfo = sierra_net_ifnum_list - } -}; - -static const struct driver_info sierra_net_info_direct_ip = { - .description = "Sierra Wireless USB-to-WWAN Modem", - .flags = FLAG_WWAN | FLAG_SEND_ZLP, - .bind = sierra_net_bind, - .unbind = sierra_net_unbind, - .status = sierra_net_status, - .rx_fixup = sierra_net_rx_fixup, - .tx_fixup = sierra_net_tx_fixup, - .manage_power = sierra_net_manage_power, - .stop = sierra_net_stop, - .check_connect = sierra_net_open, - .data = (unsigned long)&sierra_net_info_data_direct_ip, -}; - -static const struct usb_device_id products[] = { - {USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modem */ - .driver_info = (unsigned long) &sierra_net_info_direct_ip}, - {USB_DEVICE(0xF3D, 0x68A3), /* AT&T Direct IP modem */ - .driver_info = (unsigned long) &sierra_net_info_direct_ip}, - {USB_DEVICE(0x1199, 0x68AA), /* Sierra Wireless Direct IP LTE modem */ - .driver_info = (unsigned long) &sierra_net_info_direct_ip}, - {USB_DEVICE(0xF3D, 0x68AA), /* AT&T Direct IP LTE modem */ - .driver_info = (unsigned long) &sierra_net_info_direct_ip}, - - {}, /* last item */ -}; -MODULE_DEVICE_TABLE(usb, products); - -/* We are based on usbnet, so let it handle the USB driver specifics */ -static struct usb_driver sierra_net_driver = { - .name = "sierra_net", - .id_table = products, - .probe = usbnet_probe, - .disconnect = usbnet_disconnect, - .suspend = usbnet_suspend, - .resume = usbnet_resume, - .reset_resume = sierra_net_reset_resume, - .no_dynamic_id = 1, - .supports_autosuspend = 1, -}; - -static int __init sierra_net_init(void) -{ - BUILD_BUG_ON(FIELD_SIZEOF(struct usbnet, data) - < sizeof(struct cdc_state)); - - return usb_register(&sierra_net_driver); -} - -static void __exit sierra_net_exit(void) -{ - usb_deregister(&sierra_net_driver); -} - -module_exit(sierra_net_exit); -module_init(sierra_net_init); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); |