[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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/*
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* USB Networking Link Interface
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*
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* Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net>
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* Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 __USBNET_H
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#define __USBNET_H
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2005-08-31 12:52:45 -04:00
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/* interface from usbnet core to each USB networking link we handle */
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[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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struct usbnet {
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/* housekeeping */
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struct usb_device *udev;
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struct driver_info *driver_info;
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2007-04-17 19:10:10 -04:00
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const char *driver_name;
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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wait_queue_head_t *wait;
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2006-10-08 18:08:02 -04:00
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struct mutex phy_mutex;
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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/* i/o info: pipes etc */
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unsigned in, out;
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struct usb_host_endpoint *status;
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unsigned maxpacket;
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struct timer_list delay;
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/* protocol/interface state */
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struct net_device *net;
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struct net_device_stats stats;
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int msg_enable;
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unsigned long data [5];
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u32 xid;
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u32 hard_mtu; /* count any extra framing */
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2005-08-31 12:53:10 -04:00
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size_t rx_urb_size; /* size for rx urbs */
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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struct mii_if_info mii;
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/* various kinds of pending driver work */
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struct sk_buff_head rxq;
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struct sk_buff_head txq;
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struct sk_buff_head done;
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struct urb *interrupt;
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struct tasklet_struct bh;
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struct work_struct kevent;
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unsigned long flags;
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# define EVENT_TX_HALT 0
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# define EVENT_RX_HALT 1
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# define EVENT_RX_MEMORY 2
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# define EVENT_STS_SPLIT 3
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# define EVENT_LINK_RESET 4
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};
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2005-08-31 12:52:45 -04:00
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static inline struct usb_driver *driver_of(struct usb_interface *intf)
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{
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return to_usb_driver(intf->dev.driver);
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}
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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/* interface from the device/framing level "minidriver" to core */
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struct driver_info {
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char *description;
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int flags;
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/* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
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#define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
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#define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
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#define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
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#define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
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#define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
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#define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
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#define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
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/* init device ... can sleep, or cause probe() failure */
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int (*bind)(struct usbnet *, struct usb_interface *);
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/* cleanup device ... can sleep, but can't fail */
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void (*unbind)(struct usbnet *, struct usb_interface *);
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/* reset device ... can sleep */
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int (*reset)(struct usbnet *);
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/* see if peer is connected ... can sleep */
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int (*check_connect)(struct usbnet *);
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/* for status polling */
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void (*status)(struct usbnet *, struct urb *);
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/* link reset handling, called from defer_kevent */
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int (*link_reset)(struct usbnet *);
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/* fixup rx packet (strip framing) */
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int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
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/* fixup tx packet (add framing) */
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struct sk_buff *(*tx_fixup)(struct usbnet *dev,
|
2005-10-21 03:21:58 -04:00
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struct sk_buff *skb, gfp_t flags);
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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/* for new devices, use the descriptor-reading code instead */
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int in; /* rx endpoint */
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int out; /* tx endpoint */
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unsigned long data; /* Misc driver specific data */
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};
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2005-08-31 12:52:45 -04:00
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/* Minidrivers are just drivers using the "usbnet" core as a powerful
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* network-specific subroutine library ... that happens to do pretty
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* much everything except custom framing and chip-specific stuff.
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*/
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extern int usbnet_probe(struct usb_interface *, const struct usb_device_id *);
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extern int usbnet_suspend (struct usb_interface *, pm_message_t );
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extern int usbnet_resume (struct usb_interface *);
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extern void usbnet_disconnect(struct usb_interface *);
|
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|
|
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
|
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|
|
2005-08-31 12:53:58 -04:00
|
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/* Drivers that reuse some of the standard USB CDC infrastructure
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* (notably, using multiple interfaces according to the the CDC
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* union descriptor) get some helper code.
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*/
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struct cdc_state {
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struct usb_cdc_header_desc *header;
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struct usb_cdc_union_desc *u;
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|
|
struct usb_cdc_ether_desc *ether;
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|
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struct usb_interface *control;
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struct usb_interface *data;
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};
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extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_interface *);
|
|
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extern void usbnet_cdc_unbind (struct usbnet *, struct usb_interface *);
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|
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/* CDC and RNDIS support the same host-chosen packet filters for IN transfers */
|
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|
#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
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|
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|
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|USB_CDC_PACKET_TYPE_ALL_MULTICAST \
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|
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|USB_CDC_PACKET_TYPE_PROMISCUOUS \
|
|
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|
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|USB_CDC_PACKET_TYPE_DIRECTED)
|
|
|
|
|
|
|
|
|
|
|
[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
|
|
|
/* we record the state for each of our queued skbs */
|
|
|
|
|
enum skb_state {
|
|
|
|
|
illegal = 0,
|
|
|
|
|
tx_start, tx_done,
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|
|
|
rx_start, rx_done, rx_cleanup
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|
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|
|
};
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|
|
|
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|
|
|
struct skb_data { /* skb->cb is one of these */
|
|
|
|
|
struct urb *urb;
|
|
|
|
|
struct usbnet *dev;
|
|
|
|
|
enum skb_state state;
|
|
|
|
|
size_t length;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
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2005-08-31 12:53:10 -04:00
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extern int usbnet_get_endpoints(struct usbnet *, struct usb_interface *);
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extern void usbnet_defer_kevent (struct usbnet *, int);
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extern void usbnet_skb_return (struct usbnet *, struct sk_buff *);
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2006-07-27 14:17:28 -04:00
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extern void usbnet_unlink_rx_urbs(struct usbnet *);
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2005-08-31 12:53:10 -04:00
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2006-10-08 18:08:01 -04:00
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extern int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd);
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extern int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd);
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extern u32 usbnet_get_link (struct net_device *net);
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2005-08-31 12:53:10 -04:00
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extern u32 usbnet_get_msglevel (struct net_device *);
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extern void usbnet_set_msglevel (struct net_device *, u32);
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extern void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
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2006-10-08 18:08:01 -04:00
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extern int usbnet_nway_reset(struct net_device *net);
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[PATCH] USB: usbnet (1/9) clean up framing
This starts to prepare the core of "usbnet" to know less about various
framing protocols that map Ethernet packets onto USB, so "minidrivers"
can be modules that just plug into the core.
- Remove some framing-specific code that cluttered the core:
* net->hard_header_len records how much space to preallocate;
now drivers that add their own framing (Net1080, GeneLink,
Zaurus, and RNDIS) will have smoother TX paths. Even for
the drivers (Zaurus, Net1080) that need trailers.
* defines new dev->hard_mtu, using this "hardware" limit to
check changes to the link's settable "software" mtu.
* now net->hard_header_len and dev->hard_mtu are set up in the
driver bind() routines, if needed.
- Transaction ID is no longer specific to the Net1080 framing;
RNDIS needs one too.
- Creates a new "usbnet.h" header with declarations that are shared
between the core and what will be separate modules.
- Plus a couple other minor tweaks, like recognizing -ESHUTDOWN
means the keventd work should just shut itself down asap.
The core code is only about 1/3 of this large file. Splitting out the
minidrivers into separate modules (e.g. ones for ASIX adapters,
Zaurii and similar, CDC Ethernet, etc), in later patches, will
improve maintainability and shrink typical runtime footprints.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-08-31 12:52:31 -04:00
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/* messaging support includes the interface name, so it must not be
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* used before it has one ... notably, in minidriver bind() calls.
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*/
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#ifdef DEBUG
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#define devdbg(usbnet, fmt, arg...) \
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printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#else
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#define devdbg(usbnet, fmt, arg...) do {} while(0)
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#endif
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#define deverr(usbnet, fmt, arg...) \
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printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#define devwarn(usbnet, fmt, arg...) \
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printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
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#define devinfo(usbnet, fmt, arg...) \
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printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
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#endif /* __USBNET_H */
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