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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | // 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 */ |