mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-17 07:54:54 +08:00
c96022ded7
There are no old function interface users left, so the old interface can be removed. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
312 lines
9.8 KiB
C
312 lines
9.8 KiB
C
/*
|
|
* u_ether.h -- interface to USB gadget "ethernet link" utilities
|
|
*
|
|
* Copyright (C) 2003-2005,2008 David Brownell
|
|
* Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
|
|
* Copyright (C) 2008 Nokia Corporation
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __U_ETHER_H
|
|
#define __U_ETHER_H
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/usb/composite.h>
|
|
#include <linux/usb/cdc.h>
|
|
|
|
#include "gadget_chips.h"
|
|
|
|
#define QMULT_DEFAULT 5
|
|
|
|
/*
|
|
* dev_addr: initial value
|
|
* changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx"
|
|
* host_addr: this address is invisible to ifconfig
|
|
*/
|
|
#define USB_ETHERNET_MODULE_PARAMETERS() \
|
|
static unsigned qmult = QMULT_DEFAULT; \
|
|
module_param(qmult, uint, S_IRUGO|S_IWUSR); \
|
|
MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");\
|
|
\
|
|
static char *dev_addr; \
|
|
module_param(dev_addr, charp, S_IRUGO); \
|
|
MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); \
|
|
\
|
|
static char *host_addr; \
|
|
module_param(host_addr, charp, S_IRUGO); \
|
|
MODULE_PARM_DESC(host_addr, "Host Ethernet Address")
|
|
|
|
struct eth_dev;
|
|
|
|
/*
|
|
* This represents the USB side of an "ethernet" link, managed by a USB
|
|
* function which provides control and (maybe) framing. Two functions
|
|
* in different configurations could share the same ethernet link/netdev,
|
|
* using different host interaction models.
|
|
*
|
|
* There is a current limitation that only one instance of this link may
|
|
* be present in any given configuration. When that's a problem, network
|
|
* layer facilities can be used to package multiple logical links on this
|
|
* single "physical" one.
|
|
*/
|
|
struct gether {
|
|
struct usb_function func;
|
|
|
|
/* updated by gether_{connect,disconnect} */
|
|
struct eth_dev *ioport;
|
|
|
|
/* endpoints handle full and/or high speeds */
|
|
struct usb_ep *in_ep;
|
|
struct usb_ep *out_ep;
|
|
|
|
bool is_zlp_ok;
|
|
|
|
u16 cdc_filter;
|
|
|
|
/* hooks for added framing, as needed for RNDIS and EEM. */
|
|
u32 header_len;
|
|
/* NCM requires fixed size bundles */
|
|
bool is_fixed;
|
|
u32 fixed_out_len;
|
|
u32 fixed_in_len;
|
|
struct sk_buff *(*wrap)(struct gether *port,
|
|
struct sk_buff *skb);
|
|
int (*unwrap)(struct gether *port,
|
|
struct sk_buff *skb,
|
|
struct sk_buff_head *list);
|
|
|
|
/* called on network open/close */
|
|
void (*open)(struct gether *);
|
|
void (*close)(struct gether *);
|
|
};
|
|
|
|
#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
|
|
|USB_CDC_PACKET_TYPE_ALL_MULTICAST \
|
|
|USB_CDC_PACKET_TYPE_PROMISCUOUS \
|
|
|USB_CDC_PACKET_TYPE_DIRECTED)
|
|
|
|
/* variant of gether_setup that allows customizing network device name */
|
|
struct eth_dev *gether_setup_name(struct usb_gadget *g,
|
|
const char *dev_addr, const char *host_addr,
|
|
u8 ethaddr[ETH_ALEN], unsigned qmult, const char *netname);
|
|
|
|
/* netdev setup/teardown as directed by the gadget driver */
|
|
/* gether_setup - initialize one ethernet-over-usb link
|
|
* @g: gadget to associated with these links
|
|
* @ethaddr: NULL, or a buffer in which the ethernet address of the
|
|
* host side of the link is recorded
|
|
* Context: may sleep
|
|
*
|
|
* This sets up the single network link that may be exported by a
|
|
* gadget driver using this framework. The link layer addresses are
|
|
* set up using module parameters.
|
|
*
|
|
* Returns negative errno, or zero on success
|
|
*/
|
|
static inline struct eth_dev *gether_setup(struct usb_gadget *g,
|
|
const char *dev_addr, const char *host_addr,
|
|
u8 ethaddr[ETH_ALEN], unsigned qmult)
|
|
{
|
|
return gether_setup_name(g, dev_addr, host_addr, ethaddr, qmult, "usb");
|
|
}
|
|
|
|
/*
|
|
* variant of gether_setup_default that allows customizing
|
|
* network device name
|
|
*/
|
|
struct net_device *gether_setup_name_default(const char *netname);
|
|
|
|
/*
|
|
* gether_register_netdev - register the net device
|
|
* @net: net device to register
|
|
*
|
|
* Registers the net device associated with this ethernet-over-usb link
|
|
*
|
|
*/
|
|
int gether_register_netdev(struct net_device *net);
|
|
|
|
/* gether_setup_default - initialize one ethernet-over-usb link
|
|
* Context: may sleep
|
|
*
|
|
* This sets up the single network link that may be exported by a
|
|
* gadget driver using this framework. The link layer addresses
|
|
* are set to random values.
|
|
*
|
|
* Returns negative errno, or zero on success
|
|
*/
|
|
static inline struct net_device *gether_setup_default(void)
|
|
{
|
|
return gether_setup_name_default("usb");
|
|
}
|
|
|
|
/**
|
|
* gether_set_gadget - initialize one ethernet-over-usb link with a gadget
|
|
* @net: device representing this link
|
|
* @g: the gadget to initialize with
|
|
*
|
|
* This associates one ethernet-over-usb link with a gadget.
|
|
*/
|
|
void gether_set_gadget(struct net_device *net, struct usb_gadget *g);
|
|
|
|
/**
|
|
* gether_set_dev_addr - initialize an ethernet-over-usb link with eth address
|
|
* @net: device representing this link
|
|
* @dev_addr: eth address of this device
|
|
*
|
|
* This sets the device-side Ethernet address of this ethernet-over-usb link
|
|
* if dev_addr is correct.
|
|
* Returns negative errno if the new address is incorrect.
|
|
*/
|
|
int gether_set_dev_addr(struct net_device *net, const char *dev_addr);
|
|
|
|
/**
|
|
* gether_get_dev_addr - get an ethernet-over-usb link eth address
|
|
* @net: device representing this link
|
|
* @dev_addr: place to store device's eth address
|
|
* @len: length of the @dev_addr buffer
|
|
*
|
|
* This gets the device-side Ethernet address of this ethernet-over-usb link.
|
|
* Returns zero on success, else negative errno.
|
|
*/
|
|
int gether_get_dev_addr(struct net_device *net, char *dev_addr, int len);
|
|
|
|
/**
|
|
* gether_set_host_addr - initialize an ethernet-over-usb link with host address
|
|
* @net: device representing this link
|
|
* @host_addr: eth address of the host
|
|
*
|
|
* This sets the host-side Ethernet address of this ethernet-over-usb link
|
|
* if host_addr is correct.
|
|
* Returns negative errno if the new address is incorrect.
|
|
*/
|
|
int gether_set_host_addr(struct net_device *net, const char *host_addr);
|
|
|
|
/**
|
|
* gether_get_host_addr - get an ethernet-over-usb link host address
|
|
* @net: device representing this link
|
|
* @host_addr: place to store eth address of the host
|
|
* @len: length of the @host_addr buffer
|
|
*
|
|
* This gets the host-side Ethernet address of this ethernet-over-usb link.
|
|
* Returns zero on success, else negative errno.
|
|
*/
|
|
int gether_get_host_addr(struct net_device *net, char *host_addr, int len);
|
|
|
|
/**
|
|
* gether_get_host_addr_cdc - get an ethernet-over-usb link host address
|
|
* @net: device representing this link
|
|
* @host_addr: place to store eth address of the host
|
|
* @len: length of the @host_addr buffer
|
|
*
|
|
* This gets the CDC formatted host-side Ethernet address of this
|
|
* ethernet-over-usb link.
|
|
* Returns zero on success, else negative errno.
|
|
*/
|
|
int gether_get_host_addr_cdc(struct net_device *net, char *host_addr, int len);
|
|
|
|
/**
|
|
* gether_get_host_addr_u8 - get an ethernet-over-usb link host address
|
|
* @net: device representing this link
|
|
* @host_mac: place to store the eth address of the host
|
|
*
|
|
* This gets the binary formatted host-side Ethernet address of this
|
|
* ethernet-over-usb link.
|
|
*/
|
|
void gether_get_host_addr_u8(struct net_device *net, u8 host_mac[ETH_ALEN]);
|
|
|
|
/**
|
|
* gether_set_qmult - initialize an ethernet-over-usb link with a multiplier
|
|
* @net: device representing this link
|
|
* @qmult: queue multiplier
|
|
*
|
|
* This sets the queue length multiplier of this ethernet-over-usb link.
|
|
* For higher speeds use longer queues.
|
|
*/
|
|
void gether_set_qmult(struct net_device *net, unsigned qmult);
|
|
|
|
/**
|
|
* gether_get_qmult - get an ethernet-over-usb link multiplier
|
|
* @net: device representing this link
|
|
*
|
|
* This gets the queue length multiplier of this ethernet-over-usb link.
|
|
*/
|
|
unsigned gether_get_qmult(struct net_device *net);
|
|
|
|
/**
|
|
* gether_get_ifname - get an ethernet-over-usb link interface name
|
|
* @net: device representing this link
|
|
* @name: place to store the interface name
|
|
* @len: length of the @name buffer
|
|
*
|
|
* This gets the interface name of this ethernet-over-usb link.
|
|
* Returns zero on success, else negative errno.
|
|
*/
|
|
int gether_get_ifname(struct net_device *net, char *name, int len);
|
|
|
|
void gether_cleanup(struct eth_dev *dev);
|
|
|
|
/* connect/disconnect is handled by individual functions */
|
|
struct net_device *gether_connect(struct gether *);
|
|
void gether_disconnect(struct gether *);
|
|
|
|
/* Some controllers can't support CDC Ethernet (ECM) ... */
|
|
static inline bool can_support_ecm(struct usb_gadget *gadget)
|
|
{
|
|
if (!gadget_supports_altsettings(gadget))
|
|
return false;
|
|
|
|
/* Everything else is *presumably* fine ... but this is a bit
|
|
* chancy, so be **CERTAIN** there are no hardware issues with
|
|
* your controller. Add it above if it can't handle CDC.
|
|
*/
|
|
return true;
|
|
}
|
|
|
|
/* each configuration may bind one instance of an ethernet link */
|
|
int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
|
|
struct eth_dev *dev);
|
|
int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
|
|
struct eth_dev *dev);
|
|
|
|
#ifdef USB_ETH_RNDIS
|
|
|
|
int rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
|
|
u32 vendorID, const char *manufacturer, struct eth_dev *dev);
|
|
|
|
#else
|
|
|
|
static inline int
|
|
rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN],
|
|
u32 vendorID, const char *manufacturer, struct eth_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* rndis_bind_config - add RNDIS network link to a configuration
|
|
* @c: the configuration to support the network link
|
|
* @ethaddr: a buffer in which the ethernet address of the host side
|
|
* side of the link was recorded
|
|
* Context: single threaded during gadget setup
|
|
*
|
|
* Returns zero on success, else negative errno.
|
|
*
|
|
* Caller must have called @gether_setup(). Caller is also responsible
|
|
* for calling @gether_cleanup() before module unload.
|
|
*/
|
|
static inline int rndis_bind_config(struct usb_configuration *c,
|
|
u8 ethaddr[ETH_ALEN], struct eth_dev *dev)
|
|
{
|
|
return rndis_bind_config_vendor(c, ethaddr, 0, NULL, dev);
|
|
}
|
|
|
|
|
|
#endif /* __U_ETHER_H */
|