100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
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/*
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* u_qc_ether.h -- interface to USB gadget "ethernet link" utilities
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*
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* Copyright (C) 2003-2005,2008 David Brownell
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* Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
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* Copyright (C) 2008 Nokia Corporation
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __U_QC_ETHER_H
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#define __U_QC_ETHER_H
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#include <linux/err.h>
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#include <linux/if_ether.h>
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#include <linux/usb/composite.h>
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#include <linux/usb/cdc.h>
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#include "gadget_chips.h"
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/*
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* This represents the USB side of an "ethernet" link, managed by a USB
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* function which provides control and (maybe) framing. Two functions
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* in different configurations could share the same ethernet link/netdev,
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* using different host interaction models.
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*
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* There is a current limitation that only one instance of this link may
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* be present in any given configuration. When that's a problem, network
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* layer facilities can be used to package multiple logical links on this
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* single "physical" one.
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*
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* This function is based on Ethernet-over-USB link layer utilities and
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* contains MSM specific implementation.
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*/
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struct qc_gether {
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struct usb_function func;
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/* updated by gether_{connect,disconnect} */
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struct eth_qc_dev *ioport;
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/* endpoints handle full and/or high speeds */
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struct usb_ep *in_ep;
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struct usb_ep *out_ep;
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bool is_zlp_ok;
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u16 cdc_filter;
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/* hooks for added framing, as needed for RNDIS and EEM. */
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u32 header_len;
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struct sk_buff *(*wrap)(struct qc_gether *port,
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struct sk_buff *skb);
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int (*unwrap)(struct qc_gether *port,
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struct sk_buff *skb,
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struct sk_buff_head *list);
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/* called on network open/close */
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void (*open)(struct qc_gether *);
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void (*close)(struct qc_gether *);
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};
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/* netdev setup/teardown as directed by the gadget driver */
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int gether_qc_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]);
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void gether_qc_cleanup_name(const char *netname);
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/* variant of gether_setup that allows customizing network device name */
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int gether_qc_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
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const char *netname);
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/* connect/disconnect is handled by individual functions */
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struct net_device *gether_qc_connect_name(struct qc_gether *link,
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const char *netname, bool netif_enable);
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void gether_qc_disconnect_name(struct qc_gether *link, const char *netname);
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/* each configuration may bind one instance of an ethernet link */
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int ecm_qc_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
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char *xport_name);
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int
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rndis_qc_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
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u32 vendorID, const char *manufacturer,
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u8 maxPktPerXfer);
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void gether_qc_get_macs(u8 dev_mac[ETH_ALEN], u8 host_mac[ETH_ALEN]);
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#endif /* __U_QC_ETHER_H */
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