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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/usbip/stub.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/usbip/stub.h')
-rw-r--r-- | drivers/usb/usbip/stub.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/usb/usbip/stub.h b/drivers/usb/usbip/stub.h new file mode 100644 index 000000000..d11270560 --- /dev/null +++ b/drivers/usb/usbip/stub.h @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2003-2008 Takahiro Hirofuchi + */ + +#ifndef __USBIP_STUB_H +#define __USBIP_STUB_H + +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/usb.h> +#include <linux/wait.h> + +#define STUB_BUSID_OTHER 0 +#define STUB_BUSID_REMOV 1 +#define STUB_BUSID_ADDED 2 +#define STUB_BUSID_ALLOC 3 + +struct stub_device { + struct usb_device *udev; + + struct usbip_device ud; + __u32 devid; + + /* + * stub_priv preserves private data of each urb. + * It is allocated as stub_priv_cache and assigned to urb->context. + * + * stub_priv is always linked to any one of 3 lists; + * priv_init: linked to this until the comletion of a urb. + * priv_tx : linked to this after the completion of a urb. + * priv_free: linked to this after the sending of the result. + * + * Any of these list operations should be locked by priv_lock. + */ + spinlock_t priv_lock; + struct list_head priv_init; + struct list_head priv_tx; + struct list_head priv_free; + + /* see comments for unlinking in stub_rx.c */ + struct list_head unlink_tx; + struct list_head unlink_free; + + wait_queue_head_t tx_waitq; +}; + +/* private data into urb->priv */ +struct stub_priv { + unsigned long seqnum; + struct list_head list; + struct stub_device *sdev; + struct urb **urbs; + struct scatterlist *sgl; + int num_urbs; + int completed_urbs; + int urb_status; + + int unlinking; +}; + +struct stub_unlink { + unsigned long seqnum; + struct list_head list; + __u32 status; +}; + +/* same as SYSFS_BUS_ID_SIZE */ +#define BUSID_SIZE 32 + +struct bus_id_priv { + char name[BUSID_SIZE]; + char status; + int interf_count; + struct stub_device *sdev; + struct usb_device *udev; + char shutdown_busid; + spinlock_t busid_lock; +}; + +/* stub_priv is allocated from stub_priv_cache */ +extern struct kmem_cache *stub_priv_cache; + +/* stub_dev.c */ +extern struct usb_device_driver stub_driver; + +/* stub_main.c */ +struct bus_id_priv *get_busid_priv(const char *busid); +void put_busid_priv(struct bus_id_priv *bid); +int del_match_busid(char *busid); +void stub_free_priv_and_urb(struct stub_priv *priv); +void stub_device_cleanup_urbs(struct stub_device *sdev); + +/* stub_rx.c */ +int stub_rx_loop(void *data); + +/* stub_tx.c */ +void stub_enqueue_ret_unlink(struct stub_device *sdev, __u32 seqnum, + __u32 status); +void stub_complete(struct urb *urb); +int stub_tx_loop(void *data); + +#endif /* __USBIP_STUB_H */ |