| /* |
| * Copyright (C) ST-Ericsson 2010-2012 |
| * 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. |
| */ |
| |
| #define CDC_NCM_COMM_ALTSETTING_NCM 0 |
| #define CDC_NCM_COMM_ALTSETTING_MBIM 1 |
| |
| #define CDC_NCM_DATA_ALTSETTING_NCM 1 |
| #define CDC_NCM_DATA_ALTSETTING_MBIM 2 |
| |
| /* CDC NCM subclass 3.2.1 */ |
| #define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10 |
| |
| /* Maximum NTB length */ |
| #define CDC_NCM_NTB_MAX_SIZE_TX 32768 /* bytes */ |
| #define CDC_NCM_NTB_MAX_SIZE_RX 32768 /* bytes */ |
| |
| /* Minimum value for MaxDatagramSize, ch. 6.2.9 */ |
| #define CDC_NCM_MIN_DATAGRAM_SIZE 1514 /* bytes */ |
| |
| /* Minimum value for MaxDatagramSize, ch. 8.1.3 */ |
| #define CDC_MBIM_MIN_DATAGRAM_SIZE 2048 /* bytes */ |
| |
| #define CDC_NCM_MIN_TX_PKT 512 /* bytes */ |
| |
| /* Default value for MaxDatagramSize */ |
| #define CDC_NCM_MAX_DATAGRAM_SIZE 8192 /* bytes */ |
| |
| /* |
| * Maximum amount of datagrams in NCM Datagram Pointer Table, not counting |
| * the last NULL entry. |
| */ |
| #define CDC_NCM_DPT_DATAGRAMS_MAX 40 |
| |
| /* Restart the timer, if amount of datagrams is less than given value */ |
| #define CDC_NCM_RESTART_TIMER_DATAGRAM_CNT 3 |
| #define CDC_NCM_TIMER_PENDING_CNT 2 |
| #define CDC_NCM_TIMER_INTERVAL (400UL * NSEC_PER_USEC) |
| |
| /* 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)) |
| |
| #define CDC_NCM_NDP_SIZE \ |
| (sizeof(struct usb_cdc_ncm_ndp16) + \ |
| (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16)) |
| |
| #define cdc_ncm_comm_intf_is_mbim(x) ((x)->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_MBIM && \ |
| (x)->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE) |
| #define cdc_ncm_data_intf_is_mbim(x) ((x)->desc.bInterfaceProtocol == USB_CDC_MBIM_PROTO_NTB) |
| |
| struct cdc_ncm_ctx { |
| struct usb_cdc_ncm_ntb_parameters ncm_parm; |
| struct hrtimer tx_timer; |
| struct tasklet_struct bh; |
| |
| const struct usb_cdc_ncm_desc *func_desc; |
| const struct usb_cdc_mbim_desc *mbim_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; |
| __le32 tx_rem_sign; |
| |
| spinlock_t mtx; |
| atomic_t stop; |
| |
| u32 tx_timer_pending; |
| 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 rx_seq; |
| u16 connected; |
| }; |
| |
| extern int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting); |
| extern void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf); |
| extern struct sk_buff *cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign); |
| extern int cdc_ncm_rx_verify_nth16(struct cdc_ncm_ctx *ctx, struct sk_buff *skb_in); |
| extern int cdc_ncm_rx_verify_ndp16(struct sk_buff *skb_in, int ndpoffset); |