Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2003-2008 Takahiro Hirofuchi |
| 3 | * |
| 4 | * This is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 17 | * USA. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/kernel.h> |
Jean Delvare | 1d03d2b | 2009-07-13 12:39:05 +0200 | [diff] [blame] | 21 | #include <linux/smp_lock.h> |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 22 | #include <linux/file.h> |
| 23 | #include <linux/tcp.h> |
| 24 | #include <linux/in.h> |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 25 | #include <linux/kthread.h> |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 26 | #include "usbip_common.h" |
| 27 | |
| 28 | /* version information */ |
| 29 | #define DRIVER_VERSION "1.0" |
| 30 | #define DRIVER_AUTHOR "Takahiro Hirofuchi <hirofuchi _at_ users.sourceforge.net>" |
| 31 | #define DRIVER_DESC "usbip common driver" |
| 32 | |
| 33 | /*-------------------------------------------------------------------------*/ |
| 34 | /* debug routines */ |
| 35 | |
Himanshu | 411a861 | 2010-01-23 17:52:02 +0530 | [diff] [blame^] | 36 | #ifdef CONFIG_USB_IP_DEBUG_ENABLE |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 37 | unsigned long usbip_debug_flag = 0xffffffff; |
| 38 | #else |
| 39 | unsigned long usbip_debug_flag; |
| 40 | #endif |
| 41 | EXPORT_SYMBOL_GPL(usbip_debug_flag); |
| 42 | |
| 43 | |
| 44 | /* FIXME */ |
| 45 | struct device_attribute dev_attr_usbip_debug; |
| 46 | EXPORT_SYMBOL_GPL(dev_attr_usbip_debug); |
| 47 | |
| 48 | |
| 49 | static ssize_t show_flag(struct device *dev, struct device_attribute *attr, |
| 50 | char *buf) |
| 51 | { |
| 52 | return sprintf(buf, "%lx\n", usbip_debug_flag); |
| 53 | } |
| 54 | |
| 55 | static ssize_t store_flag(struct device *dev, struct device_attribute *attr, |
| 56 | const char *buf, size_t count) |
| 57 | { |
Himanshu Chauhan | 1e5065db | 2010-01-23 01:51:57 +0530 | [diff] [blame] | 58 | sscanf(buf, "%lx", &usbip_debug_flag); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 59 | |
| 60 | return count; |
| 61 | } |
| 62 | DEVICE_ATTR(usbip_debug, (S_IRUGO | S_IWUSR), show_flag, store_flag); |
| 63 | |
| 64 | static void usbip_dump_buffer(char *buff, int bufflen) |
| 65 | { |
Himanshu Chauhan | aad8657 | 2010-01-23 02:52:41 +0530 | [diff] [blame] | 66 | print_hex_dump(KERN_DEBUG, "usb-ip", DUMP_PREFIX_OFFSET, 16, 4, |
| 67 | buff, bufflen, false); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 68 | } |
| 69 | |
| 70 | static void usbip_dump_pipe(unsigned int p) |
| 71 | { |
| 72 | unsigned char type = usb_pipetype(p); |
| 73 | unsigned char ep = usb_pipeendpoint(p); |
| 74 | unsigned char dev = usb_pipedevice(p); |
| 75 | unsigned char dir = usb_pipein(p); |
| 76 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 77 | printk(KERN_DEBUG "dev(%d) ", dev); |
| 78 | printk(KERN_DEBUG "ep(%d) ", ep); |
| 79 | printk(KERN_DEBUG "%s ", dir ? "IN" : "OUT"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 80 | |
| 81 | switch (type) { |
| 82 | case PIPE_ISOCHRONOUS: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 83 | printk(KERN_DEBUG "%s ", "ISO"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 84 | break; |
| 85 | case PIPE_INTERRUPT: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 86 | printk(KERN_DEBUG "%s ", "INT"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 87 | break; |
| 88 | case PIPE_CONTROL: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 89 | printk(KERN_DEBUG "%s ", "CTL"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 90 | break; |
| 91 | case PIPE_BULK: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 92 | printk(KERN_DEBUG "%s ", "BLK"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 93 | break; |
| 94 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 95 | printk(KERN_DEBUG "ERR"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 96 | } |
| 97 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 98 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 99 | |
| 100 | } |
| 101 | |
| 102 | static void usbip_dump_usb_device(struct usb_device *udev) |
| 103 | { |
| 104 | struct device *dev = &udev->dev; |
| 105 | int i; |
| 106 | |
| 107 | dev_dbg(dev, " devnum(%d) devpath(%s)", |
| 108 | udev->devnum, udev->devpath); |
| 109 | |
| 110 | switch (udev->speed) { |
| 111 | case USB_SPEED_HIGH: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 112 | printk(KERN_DEBUG " SPD_HIGH"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 113 | break; |
| 114 | case USB_SPEED_FULL: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 115 | printk(KERN_DEBUG " SPD_FULL"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 116 | break; |
| 117 | case USB_SPEED_LOW: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 118 | printk(KERN_DEBUG " SPD_LOW"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 119 | break; |
| 120 | case USB_SPEED_UNKNOWN: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 121 | printk(KERN_DEBUG " SPD_UNKNOWN"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 122 | break; |
| 123 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 124 | printk(KERN_DEBUG " SPD_ERROR"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 125 | } |
| 126 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 127 | printk(KERN_DEBUG " tt %p, ttport %d", udev->tt, udev->ttport); |
| 128 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 129 | |
| 130 | dev_dbg(dev, " "); |
| 131 | for (i = 0; i < 16; i++) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 132 | printk(KERN_DEBUG " %2u", i); |
| 133 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 134 | |
| 135 | dev_dbg(dev, " toggle0(IN) :"); |
| 136 | for (i = 0; i < 16; i++) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 137 | printk(KERN_DEBUG " %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0); |
| 138 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 139 | |
| 140 | dev_dbg(dev, " toggle1(OUT):"); |
| 141 | for (i = 0; i < 16; i++) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 142 | printk(KERN_DEBUG " %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0); |
| 143 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 144 | |
| 145 | |
| 146 | dev_dbg(dev, " epmaxp_in :"); |
| 147 | for (i = 0; i < 16; i++) { |
| 148 | if (udev->ep_in[i]) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 149 | printk(KERN_DEBUG " %2u", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 150 | le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize)); |
| 151 | } |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 152 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 153 | |
| 154 | dev_dbg(dev, " epmaxp_out :"); |
| 155 | for (i = 0; i < 16; i++) { |
| 156 | if (udev->ep_out[i]) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 157 | printk(KERN_DEBUG " %2u", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 158 | le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize)); |
| 159 | } |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 160 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 161 | |
| 162 | dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus); |
| 163 | |
| 164 | dev_dbg(dev, "descriptor %p, config %p, actconfig %p, " |
| 165 | "rawdescriptors %p\n", &udev->descriptor, udev->config, |
| 166 | udev->actconfig, udev->rawdescriptors); |
| 167 | |
| 168 | dev_dbg(dev, "have_langid %d, string_langid %d\n", |
| 169 | udev->have_langid, udev->string_langid); |
| 170 | |
| 171 | dev_dbg(dev, "maxchild %d, children %p\n", |
| 172 | udev->maxchild, udev->children); |
| 173 | } |
| 174 | |
| 175 | static void usbip_dump_request_type(__u8 rt) |
| 176 | { |
| 177 | switch (rt & USB_RECIP_MASK) { |
| 178 | case USB_RECIP_DEVICE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 179 | printk(KERN_DEBUG "DEVICE"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 180 | break; |
| 181 | case USB_RECIP_INTERFACE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 182 | printk(KERN_DEBUG "INTERF"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 183 | break; |
| 184 | case USB_RECIP_ENDPOINT: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 185 | printk(KERN_DEBUG "ENDPOI"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 186 | break; |
| 187 | case USB_RECIP_OTHER: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 188 | printk(KERN_DEBUG "OTHER "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 189 | break; |
| 190 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 191 | printk(KERN_DEBUG "------"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 192 | } |
| 193 | } |
| 194 | |
| 195 | static void usbip_dump_usb_ctrlrequest(struct usb_ctrlrequest *cmd) |
| 196 | { |
| 197 | if (!cmd) { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 198 | printk(KERN_DEBUG " %s : null pointer\n", __func__); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 199 | return; |
| 200 | } |
| 201 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 202 | printk(KERN_DEBUG " "); |
| 203 | printk(KERN_DEBUG "bRequestType(%02X) ", cmd->bRequestType); |
| 204 | printk(KERN_DEBUG "bRequest(%02X) " , cmd->bRequest); |
| 205 | printk(KERN_DEBUG "wValue(%04X) ", cmd->wValue); |
| 206 | printk(KERN_DEBUG "wIndex(%04X) ", cmd->wIndex); |
| 207 | printk(KERN_DEBUG "wLength(%04X) ", cmd->wLength); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 208 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 209 | printk(KERN_DEBUG "\n "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 210 | |
| 211 | if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 212 | printk(KERN_DEBUG "STANDARD "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 213 | switch (cmd->bRequest) { |
| 214 | case USB_REQ_GET_STATUS: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 215 | printk(KERN_DEBUG "GET_STATUS"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 216 | break; |
| 217 | case USB_REQ_CLEAR_FEATURE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 218 | printk(KERN_DEBUG "CLEAR_FEAT"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 219 | break; |
| 220 | case USB_REQ_SET_FEATURE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 221 | printk(KERN_DEBUG "SET_FEAT "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 222 | break; |
| 223 | case USB_REQ_SET_ADDRESS: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 224 | printk(KERN_DEBUG "SET_ADDRRS"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 225 | break; |
| 226 | case USB_REQ_GET_DESCRIPTOR: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 227 | printk(KERN_DEBUG "GET_DESCRI"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 228 | break; |
| 229 | case USB_REQ_SET_DESCRIPTOR: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 230 | printk(KERN_DEBUG "SET_DESCRI"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 231 | break; |
| 232 | case USB_REQ_GET_CONFIGURATION: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 233 | printk(KERN_DEBUG "GET_CONFIG"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 234 | break; |
| 235 | case USB_REQ_SET_CONFIGURATION: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 236 | printk(KERN_DEBUG "SET_CONFIG"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 237 | break; |
| 238 | case USB_REQ_GET_INTERFACE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 239 | printk(KERN_DEBUG "GET_INTERF"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 240 | break; |
| 241 | case USB_REQ_SET_INTERFACE: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 242 | printk(KERN_DEBUG "SET_INTERF"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 243 | break; |
| 244 | case USB_REQ_SYNCH_FRAME: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 245 | printk(KERN_DEBUG "SYNC_FRAME"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 246 | break; |
| 247 | default: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 248 | printk(KERN_DEBUG "REQ(%02X) ", cmd->bRequest); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 249 | } |
| 250 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 251 | printk(KERN_DEBUG " "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 252 | usbip_dump_request_type(cmd->bRequestType); |
| 253 | |
| 254 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 255 | printk(KERN_DEBUG "CLASS "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 256 | |
| 257 | else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 258 | printk(KERN_DEBUG "VENDOR "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 259 | |
| 260 | else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_RESERVED) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 261 | printk(KERN_DEBUG "RESERVED"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 262 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 263 | printk(KERN_DEBUG "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | void usbip_dump_urb(struct urb *urb) |
| 267 | { |
| 268 | struct device *dev; |
| 269 | |
| 270 | if (!urb) { |
| 271 | printk(KERN_DEBUG KBUILD_MODNAME |
| 272 | ":%s: urb: null pointer!!\n", __func__); |
| 273 | return; |
| 274 | } |
| 275 | |
| 276 | if (!urb->dev) { |
| 277 | printk(KERN_DEBUG KBUILD_MODNAME |
| 278 | ":%s: urb->dev: null pointer!!\n", __func__); |
| 279 | return; |
| 280 | } |
| 281 | dev = &urb->dev->dev; |
| 282 | |
| 283 | dev_dbg(dev, " urb :%p\n", urb); |
| 284 | dev_dbg(dev, " dev :%p\n", urb->dev); |
| 285 | |
| 286 | usbip_dump_usb_device(urb->dev); |
| 287 | |
| 288 | dev_dbg(dev, " pipe :%08x ", urb->pipe); |
| 289 | |
| 290 | usbip_dump_pipe(urb->pipe); |
| 291 | |
| 292 | dev_dbg(dev, " status :%d\n", urb->status); |
| 293 | dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags); |
| 294 | dev_dbg(dev, " transfer_buffer :%p\n", urb->transfer_buffer); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 295 | dev_dbg(dev, " transfer_buffer_length:%d\n", |
| 296 | urb->transfer_buffer_length); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 297 | dev_dbg(dev, " actual_length :%d\n", urb->actual_length); |
| 298 | dev_dbg(dev, " setup_packet :%p\n", urb->setup_packet); |
| 299 | |
| 300 | if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL) |
| 301 | usbip_dump_usb_ctrlrequest( |
| 302 | (struct usb_ctrlrequest *)urb->setup_packet); |
| 303 | |
| 304 | dev_dbg(dev, " start_frame :%d\n", urb->start_frame); |
| 305 | dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets); |
| 306 | dev_dbg(dev, " interval :%d\n", urb->interval); |
| 307 | dev_dbg(dev, " error_count :%d\n", urb->error_count); |
| 308 | dev_dbg(dev, " context :%p\n", urb->context); |
| 309 | dev_dbg(dev, " complete :%p\n", urb->complete); |
| 310 | } |
| 311 | EXPORT_SYMBOL_GPL(usbip_dump_urb); |
| 312 | |
| 313 | void usbip_dump_header(struct usbip_header *pdu) |
| 314 | { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 315 | usbip_udbg("BASE: cmd %u seq %u devid %u dir %u ep %u\n", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 316 | pdu->base.command, |
| 317 | pdu->base.seqnum, |
| 318 | pdu->base.devid, |
| 319 | pdu->base.direction, |
| 320 | pdu->base.ep); |
| 321 | |
| 322 | switch (pdu->base.command) { |
| 323 | case USBIP_CMD_SUBMIT: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 324 | usbip_udbg("CMD_SUBMIT: " |
| 325 | "x_flags %u x_len %u sf %u #p %u iv %u\n", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 326 | pdu->u.cmd_submit.transfer_flags, |
| 327 | pdu->u.cmd_submit.transfer_buffer_length, |
| 328 | pdu->u.cmd_submit.start_frame, |
| 329 | pdu->u.cmd_submit.number_of_packets, |
| 330 | pdu->u.cmd_submit.interval); |
| 331 | break; |
| 332 | case USBIP_CMD_UNLINK: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 333 | usbip_udbg("CMD_UNLINK: seq %u\n", pdu->u.cmd_unlink.seqnum); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 334 | break; |
| 335 | case USBIP_RET_SUBMIT: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 336 | usbip_udbg("RET_SUBMIT: st %d al %u sf %d ec %d\n", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 337 | pdu->u.ret_submit.status, |
| 338 | pdu->u.ret_submit.actual_length, |
| 339 | pdu->u.ret_submit.start_frame, |
| 340 | pdu->u.ret_submit.error_count); |
| 341 | case USBIP_RET_UNLINK: |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 342 | usbip_udbg("RET_UNLINK: status %d\n", pdu->u.ret_unlink.status); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 343 | break; |
| 344 | default: |
| 345 | /* NOT REACHED */ |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 346 | usbip_udbg("UNKNOWN\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 347 | } |
| 348 | } |
| 349 | EXPORT_SYMBOL_GPL(usbip_dump_header); |
| 350 | |
| 351 | |
| 352 | /*-------------------------------------------------------------------------*/ |
| 353 | /* thread routines */ |
| 354 | |
| 355 | int usbip_thread(void *param) |
| 356 | { |
| 357 | struct usbip_task *ut = param; |
| 358 | |
| 359 | if (!ut) |
| 360 | return -EINVAL; |
| 361 | |
| 362 | lock_kernel(); |
| 363 | daemonize(ut->name); |
| 364 | allow_signal(SIGKILL); |
| 365 | ut->thread = current; |
| 366 | unlock_kernel(); |
| 367 | |
| 368 | /* srv.rb must wait for rx_thread starting */ |
| 369 | complete(&ut->thread_done); |
| 370 | |
| 371 | /* start of while loop */ |
| 372 | ut->loop_ops(ut); |
| 373 | |
| 374 | /* end of loop */ |
| 375 | ut->thread = NULL; |
| 376 | |
| 377 | complete_and_exit(&ut->thread_done, 0); |
| 378 | } |
| 379 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 380 | int usbip_start_threads(struct usbip_device *ud) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 381 | { |
| 382 | /* |
| 383 | * threads are invoked per one device (per one connection). |
| 384 | */ |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 385 | struct task_struct *th; |
Roel Kluin | 05d6d67 | 2008-12-19 23:37:30 +0100 | [diff] [blame] | 386 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 387 | th = kthread_run(usbip_thread, (void *)&ud->tcp_rx, "usbip"); |
| 388 | if (IS_ERR(th)) { |
| 389 | printk(KERN_WARNING |
| 390 | "Unable to start control thread\n"); |
| 391 | return PTR_ERR(th); |
Roel Kluin | 05d6d67 | 2008-12-19 23:37:30 +0100 | [diff] [blame] | 392 | } |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 393 | th = kthread_run(usbip_thread, (void *)&ud->tcp_tx, "usbip"); |
| 394 | if (IS_ERR(th)) { |
| 395 | printk(KERN_WARNING |
| 396 | "Unable to start control thread\n"); |
| 397 | return PTR_ERR(th); |
Roel Kluin | 05d6d67 | 2008-12-19 23:37:30 +0100 | [diff] [blame] | 398 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 399 | |
| 400 | /* confirm threads are starting */ |
| 401 | wait_for_completion(&ud->tcp_rx.thread_done); |
| 402 | wait_for_completion(&ud->tcp_tx.thread_done); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 403 | return 0; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 404 | } |
| 405 | EXPORT_SYMBOL_GPL(usbip_start_threads); |
| 406 | |
| 407 | void usbip_stop_threads(struct usbip_device *ud) |
| 408 | { |
| 409 | /* kill threads related to this sdev, if v.c. exists */ |
| 410 | if (ud->tcp_rx.thread != NULL) { |
| 411 | send_sig(SIGKILL, ud->tcp_rx.thread, 1); |
| 412 | wait_for_completion(&ud->tcp_rx.thread_done); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 413 | usbip_udbg("rx_thread for ud %p has finished\n", ud); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | if (ud->tcp_tx.thread != NULL) { |
| 417 | send_sig(SIGKILL, ud->tcp_tx.thread, 1); |
| 418 | wait_for_completion(&ud->tcp_tx.thread_done); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 419 | usbip_udbg("tx_thread for ud %p has finished\n", ud); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 420 | } |
| 421 | } |
| 422 | EXPORT_SYMBOL_GPL(usbip_stop_threads); |
| 423 | |
| 424 | void usbip_task_init(struct usbip_task *ut, char *name, |
| 425 | void (*loop_ops)(struct usbip_task *)) |
| 426 | { |
| 427 | ut->thread = NULL; |
| 428 | init_completion(&ut->thread_done); |
| 429 | ut->name = name; |
| 430 | ut->loop_ops = loop_ops; |
| 431 | } |
| 432 | EXPORT_SYMBOL_GPL(usbip_task_init); |
| 433 | |
| 434 | |
| 435 | /*-------------------------------------------------------------------------*/ |
| 436 | /* socket routines */ |
| 437 | |
| 438 | /* Send/receive messages over TCP/IP. I refer drivers/block/nbd.c */ |
| 439 | int usbip_xmit(int send, struct socket *sock, char *buf, |
| 440 | int size, int msg_flags) |
| 441 | { |
| 442 | int result; |
| 443 | struct msghdr msg; |
| 444 | struct kvec iov; |
| 445 | int total = 0; |
| 446 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 447 | /* for blocks of if (usbip_dbg_flag_xmit) */ |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 448 | char *bp = buf; |
| 449 | int osize = size; |
| 450 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 451 | usbip_dbg_xmit("enter\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 452 | |
| 453 | if (!sock || !buf || !size) { |
| 454 | printk(KERN_ERR "%s: invalid arg, sock %p buff %p size %d\n", |
| 455 | __func__, sock, buf, size); |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | |
| 459 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 460 | if (usbip_dbg_flag_xmit) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 461 | if (send) { |
| 462 | if (!in_interrupt()) |
| 463 | printk(KERN_DEBUG "%-10s:", current->comm); |
| 464 | else |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 465 | printk(KERN_DEBUG "interrupt :"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 466 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 467 | printk(KERN_DEBUG "%s: sending... , sock %p, buf %p, " |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 468 | "size %d, msg_flags %d\n", __func__, |
| 469 | sock, buf, size, msg_flags); |
| 470 | usbip_dump_buffer(buf, size); |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | |
| 475 | do { |
| 476 | sock->sk->sk_allocation = GFP_NOIO; |
| 477 | iov.iov_base = buf; |
| 478 | iov.iov_len = size; |
| 479 | msg.msg_name = NULL; |
| 480 | msg.msg_namelen = 0; |
| 481 | msg.msg_control = NULL; |
| 482 | msg.msg_controllen = 0; |
| 483 | msg.msg_namelen = 0; |
| 484 | msg.msg_flags = msg_flags | MSG_NOSIGNAL; |
| 485 | |
| 486 | if (send) |
| 487 | result = kernel_sendmsg(sock, &msg, &iov, 1, size); |
| 488 | else |
| 489 | result = kernel_recvmsg(sock, &msg, &iov, 1, size, |
| 490 | MSG_WAITALL); |
| 491 | |
| 492 | if (result <= 0) { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 493 | usbip_udbg("usbip_xmit: %s sock %p buf %p size %u ret " |
| 494 | "%d total %d\n", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 495 | send ? "send" : "receive", sock, buf, |
| 496 | size, result, total); |
| 497 | goto err; |
| 498 | } |
| 499 | |
| 500 | size -= result; |
| 501 | buf += result; |
| 502 | total += result; |
| 503 | |
| 504 | } while (size > 0); |
| 505 | |
| 506 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 507 | if (usbip_dbg_flag_xmit) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 508 | if (!send) { |
| 509 | if (!in_interrupt()) |
| 510 | printk(KERN_DEBUG "%-10s:", current->comm); |
| 511 | else |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 512 | printk(KERN_DEBUG "interrupt :"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 513 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 514 | printk(KERN_DEBUG "usbip_xmit: receiving....\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 515 | usbip_dump_buffer(bp, osize); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 516 | printk(KERN_DEBUG "usbip_xmit: received, osize %d ret " |
| 517 | "%d size %d total %d\n", osize, result, |
| 518 | size, total); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | if (send) |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 522 | printk(KERN_DEBUG "usbip_xmit: send, total %d\n", |
| 523 | total); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | return total; |
| 527 | |
| 528 | err: |
| 529 | return result; |
| 530 | } |
| 531 | EXPORT_SYMBOL_GPL(usbip_xmit); |
| 532 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 533 | struct socket *sockfd_to_socket(unsigned int sockfd) |
| 534 | { |
| 535 | struct socket *socket; |
| 536 | struct file *file; |
| 537 | struct inode *inode; |
| 538 | |
| 539 | file = fget(sockfd); |
| 540 | if (!file) { |
| 541 | printk(KERN_ERR "%s: invalid sockfd\n", __func__); |
| 542 | return NULL; |
| 543 | } |
| 544 | |
| 545 | inode = file->f_dentry->d_inode; |
| 546 | |
| 547 | if (!inode || !S_ISSOCK(inode->i_mode)) |
| 548 | return NULL; |
| 549 | |
| 550 | socket = SOCKET_I(inode); |
| 551 | |
| 552 | return socket; |
| 553 | } |
| 554 | EXPORT_SYMBOL_GPL(sockfd_to_socket); |
| 555 | |
| 556 | |
| 557 | |
| 558 | /*-------------------------------------------------------------------------*/ |
| 559 | /* pdu routines */ |
| 560 | |
| 561 | /* there may be more cases to tweak the flags. */ |
| 562 | static unsigned int tweak_transfer_flags(unsigned int flags) |
| 563 | { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 564 | flags &= ~(URB_NO_TRANSFER_DMA_MAP|URB_NO_SETUP_DMA_MAP); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 565 | return flags; |
| 566 | } |
| 567 | |
| 568 | static void usbip_pack_cmd_submit(struct usbip_header *pdu, struct urb *urb, |
| 569 | int pack) |
| 570 | { |
| 571 | struct usbip_header_cmd_submit *spdu = &pdu->u.cmd_submit; |
| 572 | |
| 573 | /* |
| 574 | * Some members are not still implemented in usbip. I hope this issue |
| 575 | * will be discussed when usbip is ported to other operating systems. |
| 576 | */ |
| 577 | if (pack) { |
| 578 | /* vhci_tx.c */ |
| 579 | spdu->transfer_flags = |
| 580 | tweak_transfer_flags(urb->transfer_flags); |
| 581 | spdu->transfer_buffer_length = urb->transfer_buffer_length; |
| 582 | spdu->start_frame = urb->start_frame; |
| 583 | spdu->number_of_packets = urb->number_of_packets; |
| 584 | spdu->interval = urb->interval; |
| 585 | } else { |
| 586 | /* stub_rx.c */ |
| 587 | urb->transfer_flags = spdu->transfer_flags; |
| 588 | |
| 589 | urb->transfer_buffer_length = spdu->transfer_buffer_length; |
| 590 | urb->start_frame = spdu->start_frame; |
| 591 | urb->number_of_packets = spdu->number_of_packets; |
| 592 | urb->interval = spdu->interval; |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb, |
| 597 | int pack) |
| 598 | { |
| 599 | struct usbip_header_ret_submit *rpdu = &pdu->u.ret_submit; |
| 600 | |
| 601 | if (pack) { |
| 602 | /* stub_tx.c */ |
| 603 | |
| 604 | rpdu->status = urb->status; |
| 605 | rpdu->actual_length = urb->actual_length; |
| 606 | rpdu->start_frame = urb->start_frame; |
| 607 | rpdu->error_count = urb->error_count; |
| 608 | } else { |
| 609 | /* vhci_rx.c */ |
| 610 | |
| 611 | urb->status = rpdu->status; |
| 612 | urb->actual_length = rpdu->actual_length; |
| 613 | urb->start_frame = rpdu->start_frame; |
| 614 | urb->error_count = rpdu->error_count; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | |
| 619 | void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd, |
| 620 | int pack) |
| 621 | { |
| 622 | switch (cmd) { |
| 623 | case USBIP_CMD_SUBMIT: |
| 624 | usbip_pack_cmd_submit(pdu, urb, pack); |
| 625 | break; |
| 626 | case USBIP_RET_SUBMIT: |
| 627 | usbip_pack_ret_submit(pdu, urb, pack); |
| 628 | break; |
| 629 | default: |
| 630 | err("unknown command"); |
| 631 | /* NOTREACHED */ |
| 632 | /* BUG(); */ |
| 633 | } |
| 634 | } |
| 635 | EXPORT_SYMBOL_GPL(usbip_pack_pdu); |
| 636 | |
| 637 | |
| 638 | static void correct_endian_basic(struct usbip_header_basic *base, int send) |
| 639 | { |
| 640 | if (send) { |
| 641 | base->command = cpu_to_be32(base->command); |
| 642 | base->seqnum = cpu_to_be32(base->seqnum); |
| 643 | base->devid = cpu_to_be32(base->devid); |
| 644 | base->direction = cpu_to_be32(base->direction); |
| 645 | base->ep = cpu_to_be32(base->ep); |
| 646 | } else { |
| 647 | base->command = be32_to_cpu(base->command); |
| 648 | base->seqnum = be32_to_cpu(base->seqnum); |
| 649 | base->devid = be32_to_cpu(base->devid); |
| 650 | base->direction = be32_to_cpu(base->direction); |
| 651 | base->ep = be32_to_cpu(base->ep); |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | static void correct_endian_cmd_submit(struct usbip_header_cmd_submit *pdu, |
| 656 | int send) |
| 657 | { |
| 658 | if (send) { |
| 659 | pdu->transfer_flags = cpu_to_be32(pdu->transfer_flags); |
| 660 | |
| 661 | cpu_to_be32s(&pdu->transfer_buffer_length); |
| 662 | cpu_to_be32s(&pdu->start_frame); |
| 663 | cpu_to_be32s(&pdu->number_of_packets); |
| 664 | cpu_to_be32s(&pdu->interval); |
| 665 | } else { |
| 666 | pdu->transfer_flags = be32_to_cpu(pdu->transfer_flags); |
| 667 | |
| 668 | be32_to_cpus(&pdu->transfer_buffer_length); |
| 669 | be32_to_cpus(&pdu->start_frame); |
| 670 | be32_to_cpus(&pdu->number_of_packets); |
| 671 | be32_to_cpus(&pdu->interval); |
| 672 | } |
| 673 | } |
| 674 | |
| 675 | static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu, |
| 676 | int send) |
| 677 | { |
| 678 | if (send) { |
| 679 | cpu_to_be32s(&pdu->status); |
| 680 | cpu_to_be32s(&pdu->actual_length); |
| 681 | cpu_to_be32s(&pdu->start_frame); |
| 682 | cpu_to_be32s(&pdu->error_count); |
| 683 | } else { |
| 684 | be32_to_cpus(&pdu->status); |
| 685 | be32_to_cpus(&pdu->actual_length); |
| 686 | be32_to_cpus(&pdu->start_frame); |
| 687 | be32_to_cpus(&pdu->error_count); |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | static void correct_endian_cmd_unlink(struct usbip_header_cmd_unlink *pdu, |
| 692 | int send) |
| 693 | { |
| 694 | if (send) |
| 695 | pdu->seqnum = cpu_to_be32(pdu->seqnum); |
| 696 | else |
| 697 | pdu->seqnum = be32_to_cpu(pdu->seqnum); |
| 698 | } |
| 699 | |
| 700 | static void correct_endian_ret_unlink(struct usbip_header_ret_unlink *pdu, |
| 701 | int send) |
| 702 | { |
| 703 | if (send) |
| 704 | cpu_to_be32s(&pdu->status); |
| 705 | else |
| 706 | be32_to_cpus(&pdu->status); |
| 707 | } |
| 708 | |
| 709 | void usbip_header_correct_endian(struct usbip_header *pdu, int send) |
| 710 | { |
| 711 | __u32 cmd = 0; |
| 712 | |
| 713 | if (send) |
| 714 | cmd = pdu->base.command; |
| 715 | |
| 716 | correct_endian_basic(&pdu->base, send); |
| 717 | |
| 718 | if (!send) |
| 719 | cmd = pdu->base.command; |
| 720 | |
| 721 | switch (cmd) { |
| 722 | case USBIP_CMD_SUBMIT: |
| 723 | correct_endian_cmd_submit(&pdu->u.cmd_submit, send); |
| 724 | break; |
| 725 | case USBIP_RET_SUBMIT: |
| 726 | correct_endian_ret_submit(&pdu->u.ret_submit, send); |
| 727 | break; |
| 728 | case USBIP_CMD_UNLINK: |
| 729 | correct_endian_cmd_unlink(&pdu->u.cmd_unlink, send); |
| 730 | break; |
| 731 | case USBIP_RET_UNLINK: |
| 732 | correct_endian_ret_unlink(&pdu->u.ret_unlink, send); |
| 733 | break; |
| 734 | default: |
| 735 | /* NOTREACHED */ |
| 736 | err("unknown command in pdu header: %d", cmd); |
| 737 | /* BUG(); */ |
| 738 | } |
| 739 | } |
| 740 | EXPORT_SYMBOL_GPL(usbip_header_correct_endian); |
| 741 | |
| 742 | static void usbip_iso_pakcet_correct_endian( |
| 743 | struct usbip_iso_packet_descriptor *iso, |
| 744 | int send) |
| 745 | { |
| 746 | /* does not need all members. but copy all simply. */ |
| 747 | if (send) { |
| 748 | iso->offset = cpu_to_be32(iso->offset); |
| 749 | iso->length = cpu_to_be32(iso->length); |
| 750 | iso->status = cpu_to_be32(iso->status); |
| 751 | iso->actual_length = cpu_to_be32(iso->actual_length); |
| 752 | } else { |
| 753 | iso->offset = be32_to_cpu(iso->offset); |
| 754 | iso->length = be32_to_cpu(iso->length); |
| 755 | iso->status = be32_to_cpu(iso->status); |
| 756 | iso->actual_length = be32_to_cpu(iso->actual_length); |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso, |
| 761 | struct usb_iso_packet_descriptor *uiso, int pack) |
| 762 | { |
| 763 | if (pack) { |
| 764 | iso->offset = uiso->offset; |
| 765 | iso->length = uiso->length; |
| 766 | iso->status = uiso->status; |
| 767 | iso->actual_length = uiso->actual_length; |
| 768 | } else { |
| 769 | uiso->offset = iso->offset; |
| 770 | uiso->length = iso->length; |
| 771 | uiso->status = iso->status; |
| 772 | uiso->actual_length = iso->actual_length; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | |
| 777 | /* must free buffer */ |
| 778 | void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen) |
| 779 | { |
| 780 | void *buff; |
| 781 | struct usbip_iso_packet_descriptor *iso; |
| 782 | int np = urb->number_of_packets; |
| 783 | ssize_t size = np * sizeof(*iso); |
| 784 | int i; |
| 785 | |
| 786 | buff = kzalloc(size, GFP_KERNEL); |
| 787 | if (!buff) |
| 788 | return NULL; |
| 789 | |
| 790 | for (i = 0; i < np; i++) { |
| 791 | iso = buff + (i * sizeof(*iso)); |
| 792 | |
| 793 | usbip_pack_iso(iso, &urb->iso_frame_desc[i], 1); |
| 794 | usbip_iso_pakcet_correct_endian(iso, 1); |
| 795 | } |
| 796 | |
| 797 | *bufflen = size; |
| 798 | |
| 799 | return buff; |
| 800 | } |
| 801 | EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu); |
| 802 | |
| 803 | /* some members of urb must be substituted before. */ |
| 804 | int usbip_recv_iso(struct usbip_device *ud, struct urb *urb) |
| 805 | { |
| 806 | void *buff; |
| 807 | struct usbip_iso_packet_descriptor *iso; |
| 808 | int np = urb->number_of_packets; |
| 809 | int size = np * sizeof(*iso); |
| 810 | int i; |
| 811 | int ret; |
| 812 | |
| 813 | if (!usb_pipeisoc(urb->pipe)) |
| 814 | return 0; |
| 815 | |
| 816 | /* my Bluetooth dongle gets ISO URBs which are np = 0 */ |
| 817 | if (np == 0) { |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 818 | /* usbip_uinfo("iso np == 0\n"); */ |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 819 | /* usbip_dump_urb(urb); */ |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | buff = kzalloc(size, GFP_KERNEL); |
| 824 | if (!buff) |
| 825 | return -ENOMEM; |
| 826 | |
| 827 | ret = usbip_xmit(0, ud->tcp_socket, buff, size, 0); |
| 828 | if (ret != size) { |
| 829 | dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n", |
| 830 | ret); |
| 831 | kfree(buff); |
| 832 | |
| 833 | if (ud->side == USBIP_STUB) |
| 834 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 835 | else |
| 836 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 837 | |
| 838 | return -EPIPE; |
| 839 | } |
| 840 | |
| 841 | for (i = 0; i < np; i++) { |
| 842 | iso = buff + (i * sizeof(*iso)); |
| 843 | |
| 844 | usbip_iso_pakcet_correct_endian(iso, 0); |
| 845 | usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0); |
| 846 | } |
| 847 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 848 | kfree(buff); |
| 849 | |
| 850 | return ret; |
| 851 | } |
| 852 | EXPORT_SYMBOL_GPL(usbip_recv_iso); |
| 853 | |
| 854 | |
| 855 | /* some members of urb must be substituted before. */ |
| 856 | int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb) |
| 857 | { |
| 858 | int ret; |
| 859 | int size; |
| 860 | |
| 861 | if (ud->side == USBIP_STUB) { |
| 862 | /* stub_rx.c */ |
| 863 | /* the direction of urb must be OUT. */ |
| 864 | if (usb_pipein(urb->pipe)) |
| 865 | return 0; |
| 866 | |
| 867 | size = urb->transfer_buffer_length; |
| 868 | } else { |
| 869 | /* vhci_rx.c */ |
| 870 | /* the direction of urb must be IN. */ |
| 871 | if (usb_pipeout(urb->pipe)) |
| 872 | return 0; |
| 873 | |
| 874 | size = urb->actual_length; |
| 875 | } |
| 876 | |
| 877 | /* no need to recv xbuff */ |
| 878 | if (!(size > 0)) |
| 879 | return 0; |
| 880 | |
| 881 | ret = usbip_xmit(0, ud->tcp_socket, (char *)urb->transfer_buffer, |
| 882 | size, 0); |
| 883 | if (ret != size) { |
| 884 | dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret); |
| 885 | if (ud->side == USBIP_STUB) { |
| 886 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 887 | } else { |
| 888 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 889 | return -EPIPE; |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | EXPORT_SYMBOL_GPL(usbip_recv_xbuff); |
| 896 | |
| 897 | |
| 898 | /*-------------------------------------------------------------------------*/ |
| 899 | |
| 900 | static int __init usbip_common_init(void) |
| 901 | { |
| 902 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "" DRIVER_VERSION); |
| 903 | |
| 904 | return 0; |
| 905 | } |
| 906 | |
| 907 | static void __exit usbip_common_exit(void) |
| 908 | { |
| 909 | return; |
| 910 | } |
| 911 | |
| 912 | |
| 913 | |
| 914 | |
| 915 | module_init(usbip_common_init); |
| 916 | module_exit(usbip_common_exit); |
| 917 | |
| 918 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 919 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 920 | MODULE_LICENSE("GPL"); |