// SPDX-License-Identifier: GPL-2.0-or-later /* * USB-to-WWAN Driver for Sierra Wireless modems * * Copyright (C) 2008, 2009, 2010 Paxton Smith, Matthew Safar, Rory Filer * <[email protected]> * * 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. */ #define DRIVER_VERSION … #define DRIVER_AUTHOR … #define DRIVER_DESC … static const char driver_name[] = …; /* if defined debug messages enabled */ /*#define DEBUG*/ #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 <linux/unaligned.h> #include <linux/usb/usbnet.h> #define SWI_USB_REQUEST_GET_FW_ATTR … #define SWI_GET_FW_ATTR_MASK … /* 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 = …; /* * SYNC Timer Delay definition used to set the expiry time */ #define SIERRA_NET_SYNCDELAY … /* Max. MTU supported. The modem buffers are limited to 1500 */ #define SIERRA_NET_MAX_SUPPORTED_MTU … /* 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 … /* Overriding the default usbnet rx_urb_size */ #define SIERRA_NET_RX_URB_SIZE … /* Private data structure */ struct sierra_net_data { … }; struct param { … }; /* HIP message type */ #define SIERRA_NET_HIP_EXTENDEDID … #define SIERRA_NET_HIP_HSYNC_ID … #define SIERRA_NET_HIP_RESTART_ID … #define SIERRA_NET_HIP_MSYNC_ID … #define SIERRA_NET_HIP_SHUTD_ID … #define SIERRA_NET_HIP_EXT_IP_IN_ID … #define SIERRA_NET_HIP_EXT_IP_OUT_ID … /* 3G UMTS Link Sense Indication definitions */ #define SIERRA_NET_HIP_LSI_UMTSID … /* Reverse Channel Grant Indication HIP message */ #define SIERRA_NET_HIP_RCGI … /* LSI Protocol types */ #define SIERRA_NET_PROTOCOL_UMTS … #define SIERRA_NET_PROTOCOL_UMTS_DS … /* LSI Coverage */ #define SIERRA_NET_COVERAGE_NONE … #define SIERRA_NET_COVERAGE_NOPACKET … /* LSI Session */ #define SIERRA_NET_SESSION_IDLE … /* LSI Link types */ #define SIERRA_NET_AS_LINK_TYPE_IPV4 … #define SIERRA_NET_AS_LINK_TYPE_IPV6 … struct lsi_umts { … } __packed; struct lsi_umts_single { … } __packed; struct lsi_umts_dual { … } __packed; #define SIERRA_NET_LSI_COMMON_LEN … #define SIERRA_NET_LSI_UMTS_LEN … #define SIERRA_NET_LSI_UMTS_STATUS_LEN … #define SIERRA_NET_LSI_UMTS_DS_LEN … #define SIERRA_NET_LSI_UMTS_DS_STATUS_LEN … /* Our own net device operations structure */ static const struct net_device_ops sierra_net_device_ops = …; /* get private data associated with passed in usbnet device */ static inline struct sierra_net_data *sierra_net_get_private(struct usbnet *dev) { … } /* set private data associated with passed in usbnet device */ static inline void sierra_net_set_private(struct usbnet *dev, struct sierra_net_data *priv) { … } /* is packet IPv4/IPv6 */ static inline int is_ip(struct sk_buff *skb) { … } /* * 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) { … } static const u8 *save16bit(struct param *p, const u8 *datap) { … } static const u8 *save8bit(struct param *p, const u8 *datap) { … } /*----------------------------------------------------------------------------* * BEGIN HIP * *----------------------------------------------------------------------------*/ /* HIP header */ #define SIERRA_NET_HIP_HDR_LEN … /* Extended HIP header */ #define SIERRA_NET_HIP_EXT_HDR_LEN … struct hip_hdr { … }; static int parse_hip(const u8 *buf, const u32 buflen, struct hip_hdr *hh) { … } static void build_hip(u8 *buf, const u16 payloadlen, struct sierra_net_data *priv) { … } /*----------------------------------------------------------------------------* * END HIP * *----------------------------------------------------------------------------*/ static int sierra_net_send_cmd(struct usbnet *dev, u8 *cmd, int cmdlen, const char * cmd_name) { … } static int sierra_net_send_sync(struct usbnet *dev) { … } static void sierra_net_set_ctx_index(struct sierra_net_data *priv, u8 ctx_ix) { … } static int sierra_net_parse_lsi(struct usbnet *dev, char *data, int datalen) { … } static void sierra_net_handle_lsi(struct usbnet *dev, char *data, struct hip_hdr *hh) { … } static void sierra_net_dosync(struct usbnet *dev) { … } static void sierra_net_kevent(struct work_struct *work) { … } static void sierra_net_defer_kevent(struct usbnet *dev, int work) { … } /* * Sync Retransmit Timer Handler. On expiry, kick the work queue */ static void sierra_sync_timer(struct timer_list *t) { … } static void sierra_net_status(struct usbnet *dev, struct urb *urb) { … } static void sierra_net_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) { … } static u32 sierra_net_get_link(struct net_device *net) { … } static const struct ethtool_ops sierra_net_ethtool_ops = …; static int sierra_net_get_fw_attr(struct usbnet *dev, u16 *datap) { … } /* * collects the bulk endpoints, the status endpoint. */ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf) { … } static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf) { … } static struct sk_buff *sierra_net_skb_clone(struct usbnet *dev, struct sk_buff *skb, int len) { … } /* ---------------------------- Receive data path ----------------------*/ static int sierra_net_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { … } /* ---------------------------- Transmit data path ----------------------*/ static struct sk_buff *sierra_net_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { … } static const struct driver_info sierra_net_info_direct_ip = …; static int sierra_net_probe(struct usb_interface *udev, const struct usb_device_id *prod) { … } #define DIRECT_IP_DEVICE(vend, prod) … static const struct usb_device_id products[] = …; 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 = …; module_usb_driver(…) …; MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_VERSION(…); MODULE_LICENSE(…) …;
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