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 | |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 20 | #include <asm/byteorder.h> |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 21 | #include <linux/file.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 22 | #include <linux/fs.h> |
| 23 | #include <linux/kernel.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 24 | #include <linux/slab.h> |
Paul Gortmaker | 4529623 | 2011-08-30 17:50:46 -0400 | [diff] [blame] | 25 | #include <linux/module.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 26 | #include <net/sock.h> |
matt mooney | 4ce0a41 | 2011-05-06 03:47:56 -0700 | [diff] [blame] | 27 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 28 | #include "usbip_common.h" |
| 29 | |
matt mooney | 4ce0a41 | 2011-05-06 03:47:56 -0700 | [diff] [blame] | 30 | #define DRIVER_AUTHOR "Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>" |
matt mooney | 64e6242 | 2011-05-11 22:33:44 -0700 | [diff] [blame] | 31 | #define DRIVER_DESC "USB/IP Core" |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 32 | |
matt mooney | 64e6242 | 2011-05-11 22:33:44 -0700 | [diff] [blame] | 33 | #ifdef CONFIG_USBIP_DEBUG |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 34 | unsigned long usbip_debug_flag = 0xffffffff; |
| 35 | #else |
| 36 | unsigned long usbip_debug_flag; |
| 37 | #endif |
| 38 | EXPORT_SYMBOL_GPL(usbip_debug_flag); |
| 39 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 40 | /* FIXME */ |
| 41 | struct device_attribute dev_attr_usbip_debug; |
| 42 | EXPORT_SYMBOL_GPL(dev_attr_usbip_debug); |
| 43 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 44 | static ssize_t show_flag(struct device *dev, struct device_attribute *attr, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 45 | char *buf) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 46 | { |
| 47 | return sprintf(buf, "%lx\n", usbip_debug_flag); |
| 48 | } |
| 49 | |
| 50 | static ssize_t store_flag(struct device *dev, struct device_attribute *attr, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 51 | const char *buf, size_t count) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 52 | { |
Himanshu Chauhan | 1e5065db | 2010-01-23 01:51:57 +0530 | [diff] [blame] | 53 | sscanf(buf, "%lx", &usbip_debug_flag); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 54 | return count; |
| 55 | } |
| 56 | DEVICE_ATTR(usbip_debug, (S_IRUGO | S_IWUSR), show_flag, store_flag); |
| 57 | |
| 58 | static void usbip_dump_buffer(char *buff, int bufflen) |
| 59 | { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 60 | print_hex_dump(KERN_DEBUG, "usbip-core", DUMP_PREFIX_OFFSET, 16, 4, |
Himanshu Chauhan | aad8657 | 2010-01-23 02:52:41 +0530 | [diff] [blame] | 61 | buff, bufflen, false); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | static void usbip_dump_pipe(unsigned int p) |
| 65 | { |
| 66 | unsigned char type = usb_pipetype(p); |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 67 | unsigned char ep = usb_pipeendpoint(p); |
| 68 | unsigned char dev = usb_pipedevice(p); |
| 69 | unsigned char dir = usb_pipein(p); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 70 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 71 | pr_debug("dev(%d) ep(%d) [%s] ", dev, ep, dir ? "IN" : "OUT"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 72 | |
| 73 | switch (type) { |
| 74 | case PIPE_ISOCHRONOUS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 75 | pr_debug("ISO\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 76 | break; |
| 77 | case PIPE_INTERRUPT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 78 | pr_debug("INT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 79 | break; |
| 80 | case PIPE_CONTROL: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 81 | pr_debug("CTRL\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 82 | break; |
| 83 | case PIPE_BULK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 84 | pr_debug("BULK\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 85 | break; |
| 86 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 87 | pr_debug("ERR\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 88 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 89 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | static void usbip_dump_usb_device(struct usb_device *udev) |
| 93 | { |
| 94 | struct device *dev = &udev->dev; |
| 95 | int i; |
| 96 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 97 | dev_dbg(dev, " devnum(%d) devpath(%s) ", |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 98 | udev->devnum, udev->devpath); |
| 99 | |
| 100 | switch (udev->speed) { |
| 101 | case USB_SPEED_HIGH: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 102 | pr_debug("SPD_HIGH "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 103 | break; |
| 104 | case USB_SPEED_FULL: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 105 | pr_debug("SPD_FULL "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 106 | break; |
| 107 | case USB_SPEED_LOW: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 108 | pr_debug("SPD_LOW "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 109 | break; |
| 110 | case USB_SPEED_UNKNOWN: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 111 | pr_debug("SPD_UNKNOWN "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 112 | break; |
| 113 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 114 | pr_debug("SPD_ERROR "); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 115 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 116 | } |
| 117 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 118 | pr_debug("tt %p, ttport %d\n", udev->tt, udev->ttport); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 119 | |
| 120 | dev_dbg(dev, " "); |
| 121 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 122 | pr_debug(" %2u", i); |
| 123 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 124 | |
| 125 | dev_dbg(dev, " toggle0(IN) :"); |
| 126 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 127 | pr_debug(" %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0); |
| 128 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 129 | |
| 130 | dev_dbg(dev, " toggle1(OUT):"); |
| 131 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 132 | pr_debug(" %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0); |
| 133 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 134 | |
| 135 | dev_dbg(dev, " epmaxp_in :"); |
| 136 | for (i = 0; i < 16; i++) { |
| 137 | if (udev->ep_in[i]) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 138 | pr_debug(" %2u", |
| 139 | le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize)); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 140 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 141 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 142 | |
| 143 | dev_dbg(dev, " epmaxp_out :"); |
| 144 | for (i = 0; i < 16; i++) { |
| 145 | if (udev->ep_out[i]) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 146 | pr_debug(" %2u", |
| 147 | le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize)); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 148 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 149 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 150 | |
| 151 | dev_dbg(dev, "parent %p, bus %p\n", udev->parent, udev->bus); |
| 152 | |
| 153 | dev_dbg(dev, "descriptor %p, config %p, actconfig %p, " |
| 154 | "rawdescriptors %p\n", &udev->descriptor, udev->config, |
| 155 | udev->actconfig, udev->rawdescriptors); |
| 156 | |
| 157 | dev_dbg(dev, "have_langid %d, string_langid %d\n", |
| 158 | udev->have_langid, udev->string_langid); |
| 159 | |
| 160 | dev_dbg(dev, "maxchild %d, children %p\n", |
| 161 | udev->maxchild, udev->children); |
| 162 | } |
| 163 | |
| 164 | static void usbip_dump_request_type(__u8 rt) |
| 165 | { |
| 166 | switch (rt & USB_RECIP_MASK) { |
| 167 | case USB_RECIP_DEVICE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 168 | pr_debug("DEVICE"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 169 | break; |
| 170 | case USB_RECIP_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 171 | pr_debug("INTERF"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 172 | break; |
| 173 | case USB_RECIP_ENDPOINT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 174 | pr_debug("ENDPOI"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 175 | break; |
| 176 | case USB_RECIP_OTHER: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 177 | pr_debug("OTHER "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 178 | break; |
| 179 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 180 | pr_debug("------"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 181 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 182 | } |
| 183 | } |
| 184 | |
| 185 | static void usbip_dump_usb_ctrlrequest(struct usb_ctrlrequest *cmd) |
| 186 | { |
| 187 | if (!cmd) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 188 | pr_debug(" : null pointer\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 189 | return; |
| 190 | } |
| 191 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 192 | pr_debug(" "); |
| 193 | pr_debug("bRequestType(%02X) bRequest(%02X) wValue(%04X) wIndex(%04X) " |
| 194 | "wLength(%04X) ", cmd->bRequestType, cmd->bRequest, |
| 195 | cmd->wValue, cmd->wIndex, cmd->wLength); |
| 196 | pr_debug("\n "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 197 | |
| 198 | if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 199 | pr_debug("STANDARD "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 200 | switch (cmd->bRequest) { |
| 201 | case USB_REQ_GET_STATUS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 202 | pr_debug("GET_STATUS\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 203 | break; |
| 204 | case USB_REQ_CLEAR_FEATURE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 205 | pr_debug("CLEAR_FEAT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 206 | break; |
| 207 | case USB_REQ_SET_FEATURE: |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 208 | pr_debug("SET_FEAT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 209 | break; |
| 210 | case USB_REQ_SET_ADDRESS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 211 | pr_debug("SET_ADDRRS\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 212 | break; |
| 213 | case USB_REQ_GET_DESCRIPTOR: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 214 | pr_debug("GET_DESCRI\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 215 | break; |
| 216 | case USB_REQ_SET_DESCRIPTOR: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 217 | pr_debug("SET_DESCRI\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 218 | break; |
| 219 | case USB_REQ_GET_CONFIGURATION: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 220 | pr_debug("GET_CONFIG\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 221 | break; |
| 222 | case USB_REQ_SET_CONFIGURATION: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 223 | pr_debug("SET_CONFIG\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 224 | break; |
| 225 | case USB_REQ_GET_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 226 | pr_debug("GET_INTERF\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 227 | break; |
| 228 | case USB_REQ_SET_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 229 | pr_debug("SET_INTERF\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 230 | break; |
| 231 | case USB_REQ_SYNCH_FRAME: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 232 | pr_debug("SYNC_FRAME\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 233 | break; |
| 234 | default: |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 235 | pr_debug("REQ(%02X)\n", cmd->bRequest); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 236 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 237 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 238 | usbip_dump_request_type(cmd->bRequestType); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 239 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) { |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 240 | pr_debug("CLASS\n"); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 241 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) { |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 242 | pr_debug("VENDOR\n"); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 243 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_RESERVED) { |
| 244 | pr_debug("RESERVED\n"); |
| 245 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | void usbip_dump_urb(struct urb *urb) |
| 249 | { |
| 250 | struct device *dev; |
| 251 | |
| 252 | if (!urb) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 253 | pr_debug("urb: null pointer!!\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 254 | return; |
| 255 | } |
| 256 | |
| 257 | if (!urb->dev) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 258 | pr_debug("urb->dev: null pointer!!\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 259 | return; |
| 260 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 261 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 262 | dev = &urb->dev->dev; |
| 263 | |
| 264 | dev_dbg(dev, " urb :%p\n", urb); |
| 265 | dev_dbg(dev, " dev :%p\n", urb->dev); |
| 266 | |
| 267 | usbip_dump_usb_device(urb->dev); |
| 268 | |
| 269 | dev_dbg(dev, " pipe :%08x ", urb->pipe); |
| 270 | |
| 271 | usbip_dump_pipe(urb->pipe); |
| 272 | |
| 273 | dev_dbg(dev, " status :%d\n", urb->status); |
| 274 | dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags); |
| 275 | dev_dbg(dev, " transfer_buffer :%p\n", urb->transfer_buffer); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 276 | dev_dbg(dev, " transfer_buffer_length:%d\n", |
| 277 | urb->transfer_buffer_length); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 278 | dev_dbg(dev, " actual_length :%d\n", urb->actual_length); |
| 279 | dev_dbg(dev, " setup_packet :%p\n", urb->setup_packet); |
| 280 | |
| 281 | if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL) |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 282 | usbip_dump_usb_ctrlrequest( |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 283 | (struct usb_ctrlrequest *)urb->setup_packet); |
| 284 | |
| 285 | dev_dbg(dev, " start_frame :%d\n", urb->start_frame); |
| 286 | dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets); |
| 287 | dev_dbg(dev, " interval :%d\n", urb->interval); |
| 288 | dev_dbg(dev, " error_count :%d\n", urb->error_count); |
| 289 | dev_dbg(dev, " context :%p\n", urb->context); |
| 290 | dev_dbg(dev, " complete :%p\n", urb->complete); |
| 291 | } |
| 292 | EXPORT_SYMBOL_GPL(usbip_dump_urb); |
| 293 | |
| 294 | void usbip_dump_header(struct usbip_header *pdu) |
| 295 | { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 296 | pr_debug("BASE: cmd %u seq %u devid %u dir %u ep %u\n", |
| 297 | pdu->base.command, |
| 298 | pdu->base.seqnum, |
| 299 | pdu->base.devid, |
| 300 | pdu->base.direction, |
| 301 | pdu->base.ep); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 302 | |
| 303 | switch (pdu->base.command) { |
| 304 | case USBIP_CMD_SUBMIT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 305 | pr_debug("USBIP_CMD_SUBMIT: " |
| 306 | "x_flags %u x_len %u sf %u #p %d iv %d\n", |
| 307 | pdu->u.cmd_submit.transfer_flags, |
| 308 | pdu->u.cmd_submit.transfer_buffer_length, |
| 309 | pdu->u.cmd_submit.start_frame, |
| 310 | pdu->u.cmd_submit.number_of_packets, |
| 311 | pdu->u.cmd_submit.interval); |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 312 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 313 | case USBIP_CMD_UNLINK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 314 | pr_debug("USBIP_CMD_UNLINK: seq %u\n", |
| 315 | pdu->u.cmd_unlink.seqnum); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 316 | break; |
| 317 | case USBIP_RET_SUBMIT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 318 | pr_debug("USBIP_RET_SUBMIT: st %d al %u sf %d #p %d ec %d\n", |
| 319 | pdu->u.ret_submit.status, |
| 320 | pdu->u.ret_submit.actual_length, |
| 321 | pdu->u.ret_submit.start_frame, |
| 322 | pdu->u.ret_submit.number_of_packets, |
| 323 | pdu->u.ret_submit.error_count); |
| 324 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 325 | case USBIP_RET_UNLINK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 326 | pr_debug("USBIP_RET_UNLINK: status %d\n", |
| 327 | pdu->u.ret_unlink.status); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 328 | break; |
| 329 | default: |
| 330 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 331 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 332 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 333 | } |
| 334 | } |
| 335 | EXPORT_SYMBOL_GPL(usbip_dump_header); |
| 336 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 337 | /* Receive data over TCP/IP. */ |
| 338 | int usbip_recv(struct socket *sock, void *buf, int size) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 339 | { |
| 340 | int result; |
| 341 | struct msghdr msg; |
| 342 | struct kvec iov; |
| 343 | int total = 0; |
| 344 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 345 | /* for blocks of if (usbip_dbg_flag_xmit) */ |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 346 | char *bp = buf; |
| 347 | int osize = size; |
| 348 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 349 | usbip_dbg_xmit("enter\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 350 | |
| 351 | if (!sock || !buf || !size) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 352 | pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf, |
| 353 | size); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 354 | return -EINVAL; |
| 355 | } |
| 356 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 357 | do { |
| 358 | sock->sk->sk_allocation = GFP_NOIO; |
| 359 | iov.iov_base = buf; |
| 360 | iov.iov_len = size; |
| 361 | msg.msg_name = NULL; |
| 362 | msg.msg_namelen = 0; |
| 363 | msg.msg_control = NULL; |
| 364 | msg.msg_controllen = 0; |
| 365 | msg.msg_namelen = 0; |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 366 | msg.msg_flags = MSG_NOSIGNAL; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 367 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 368 | result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 369 | if (result <= 0) { |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 370 | pr_debug("receive sock %p buf %p size %u ret %d total %d\n", |
| 371 | sock, buf, size, result, total); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 372 | goto err; |
| 373 | } |
| 374 | |
| 375 | size -= result; |
| 376 | buf += result; |
| 377 | total += result; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 378 | } while (size > 0); |
| 379 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 380 | if (usbip_dbg_flag_xmit) { |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 381 | if (!in_interrupt()) |
| 382 | pr_debug("%-10s:", current->comm); |
| 383 | else |
| 384 | pr_debug("interrupt :"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 385 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 386 | pr_debug("receiving....\n"); |
| 387 | usbip_dump_buffer(bp, osize); |
| 388 | pr_debug("received, osize %d ret %d size %d total %d\n", |
| 389 | osize, result, size, total); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | return total; |
| 393 | |
| 394 | err: |
| 395 | return result; |
| 396 | } |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 397 | EXPORT_SYMBOL_GPL(usbip_recv); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 398 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 399 | struct socket *sockfd_to_socket(unsigned int sockfd) |
| 400 | { |
| 401 | struct socket *socket; |
| 402 | struct file *file; |
| 403 | struct inode *inode; |
| 404 | |
| 405 | file = fget(sockfd); |
| 406 | if (!file) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 407 | pr_err("invalid sockfd\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 408 | return NULL; |
| 409 | } |
| 410 | |
| 411 | inode = file->f_dentry->d_inode; |
| 412 | |
| 413 | if (!inode || !S_ISSOCK(inode->i_mode)) |
| 414 | return NULL; |
| 415 | |
| 416 | socket = SOCKET_I(inode); |
| 417 | |
| 418 | return socket; |
| 419 | } |
| 420 | EXPORT_SYMBOL_GPL(sockfd_to_socket); |
| 421 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 422 | /* there may be more cases to tweak the flags. */ |
| 423 | static unsigned int tweak_transfer_flags(unsigned int flags) |
| 424 | { |
Alan Stern | 85bcb5e | 2010-04-30 16:35:37 -0400 | [diff] [blame] | 425 | flags &= ~URB_NO_TRANSFER_DMA_MAP; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 426 | return flags; |
| 427 | } |
| 428 | |
| 429 | static void usbip_pack_cmd_submit(struct usbip_header *pdu, struct urb *urb, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 430 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 431 | { |
| 432 | struct usbip_header_cmd_submit *spdu = &pdu->u.cmd_submit; |
| 433 | |
| 434 | /* |
| 435 | * Some members are not still implemented in usbip. I hope this issue |
| 436 | * will be discussed when usbip is ported to other operating systems. |
| 437 | */ |
| 438 | if (pack) { |
| 439 | /* vhci_tx.c */ |
| 440 | spdu->transfer_flags = |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 441 | tweak_transfer_flags(urb->transfer_flags); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 442 | spdu->transfer_buffer_length = urb->transfer_buffer_length; |
| 443 | spdu->start_frame = urb->start_frame; |
| 444 | spdu->number_of_packets = urb->number_of_packets; |
| 445 | spdu->interval = urb->interval; |
| 446 | } else { |
| 447 | /* stub_rx.c */ |
| 448 | urb->transfer_flags = spdu->transfer_flags; |
| 449 | |
| 450 | urb->transfer_buffer_length = spdu->transfer_buffer_length; |
| 451 | urb->start_frame = spdu->start_frame; |
| 452 | urb->number_of_packets = spdu->number_of_packets; |
| 453 | urb->interval = spdu->interval; |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | static void usbip_pack_ret_submit(struct usbip_header *pdu, struct urb *urb, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 458 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 459 | { |
| 460 | struct usbip_header_ret_submit *rpdu = &pdu->u.ret_submit; |
| 461 | |
| 462 | if (pack) { |
| 463 | /* stub_tx.c */ |
| 464 | |
| 465 | rpdu->status = urb->status; |
| 466 | rpdu->actual_length = urb->actual_length; |
| 467 | rpdu->start_frame = urb->start_frame; |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 468 | rpdu->number_of_packets = urb->number_of_packets; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 469 | rpdu->error_count = urb->error_count; |
| 470 | } else { |
| 471 | /* vhci_rx.c */ |
| 472 | |
| 473 | urb->status = rpdu->status; |
| 474 | urb->actual_length = rpdu->actual_length; |
| 475 | urb->start_frame = rpdu->start_frame; |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 476 | urb->number_of_packets = rpdu->number_of_packets; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 477 | urb->error_count = rpdu->error_count; |
| 478 | } |
| 479 | } |
| 480 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 481 | void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 482 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 483 | { |
| 484 | switch (cmd) { |
| 485 | case USBIP_CMD_SUBMIT: |
| 486 | usbip_pack_cmd_submit(pdu, urb, pack); |
| 487 | break; |
| 488 | case USBIP_RET_SUBMIT: |
| 489 | usbip_pack_ret_submit(pdu, urb, pack); |
| 490 | break; |
| 491 | default: |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 492 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 493 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 494 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 495 | } |
| 496 | } |
| 497 | EXPORT_SYMBOL_GPL(usbip_pack_pdu); |
| 498 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 499 | static void correct_endian_basic(struct usbip_header_basic *base, int send) |
| 500 | { |
| 501 | if (send) { |
| 502 | base->command = cpu_to_be32(base->command); |
| 503 | base->seqnum = cpu_to_be32(base->seqnum); |
| 504 | base->devid = cpu_to_be32(base->devid); |
| 505 | base->direction = cpu_to_be32(base->direction); |
| 506 | base->ep = cpu_to_be32(base->ep); |
| 507 | } else { |
| 508 | base->command = be32_to_cpu(base->command); |
| 509 | base->seqnum = be32_to_cpu(base->seqnum); |
| 510 | base->devid = be32_to_cpu(base->devid); |
| 511 | base->direction = be32_to_cpu(base->direction); |
| 512 | base->ep = be32_to_cpu(base->ep); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | static void correct_endian_cmd_submit(struct usbip_header_cmd_submit *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 517 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 518 | { |
| 519 | if (send) { |
| 520 | pdu->transfer_flags = cpu_to_be32(pdu->transfer_flags); |
| 521 | |
| 522 | cpu_to_be32s(&pdu->transfer_buffer_length); |
| 523 | cpu_to_be32s(&pdu->start_frame); |
| 524 | cpu_to_be32s(&pdu->number_of_packets); |
| 525 | cpu_to_be32s(&pdu->interval); |
| 526 | } else { |
| 527 | pdu->transfer_flags = be32_to_cpu(pdu->transfer_flags); |
| 528 | |
| 529 | be32_to_cpus(&pdu->transfer_buffer_length); |
| 530 | be32_to_cpus(&pdu->start_frame); |
| 531 | be32_to_cpus(&pdu->number_of_packets); |
| 532 | be32_to_cpus(&pdu->interval); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 537 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 538 | { |
| 539 | if (send) { |
| 540 | cpu_to_be32s(&pdu->status); |
| 541 | cpu_to_be32s(&pdu->actual_length); |
| 542 | cpu_to_be32s(&pdu->start_frame); |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 543 | cpu_to_be32s(&pdu->number_of_packets); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 544 | cpu_to_be32s(&pdu->error_count); |
| 545 | } else { |
| 546 | be32_to_cpus(&pdu->status); |
| 547 | be32_to_cpus(&pdu->actual_length); |
| 548 | be32_to_cpus(&pdu->start_frame); |
David Chang | cacd18a | 2011-05-12 18:31:11 +0800 | [diff] [blame] | 549 | be32_to_cpus(&pdu->number_of_packets); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 550 | be32_to_cpus(&pdu->error_count); |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | static void correct_endian_cmd_unlink(struct usbip_header_cmd_unlink *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 555 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 556 | { |
| 557 | if (send) |
| 558 | pdu->seqnum = cpu_to_be32(pdu->seqnum); |
| 559 | else |
| 560 | pdu->seqnum = be32_to_cpu(pdu->seqnum); |
| 561 | } |
| 562 | |
| 563 | static void correct_endian_ret_unlink(struct usbip_header_ret_unlink *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 564 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 565 | { |
| 566 | if (send) |
| 567 | cpu_to_be32s(&pdu->status); |
| 568 | else |
| 569 | be32_to_cpus(&pdu->status); |
| 570 | } |
| 571 | |
| 572 | void usbip_header_correct_endian(struct usbip_header *pdu, int send) |
| 573 | { |
| 574 | __u32 cmd = 0; |
| 575 | |
| 576 | if (send) |
| 577 | cmd = pdu->base.command; |
| 578 | |
| 579 | correct_endian_basic(&pdu->base, send); |
| 580 | |
| 581 | if (!send) |
| 582 | cmd = pdu->base.command; |
| 583 | |
| 584 | switch (cmd) { |
| 585 | case USBIP_CMD_SUBMIT: |
| 586 | correct_endian_cmd_submit(&pdu->u.cmd_submit, send); |
| 587 | break; |
| 588 | case USBIP_RET_SUBMIT: |
| 589 | correct_endian_ret_submit(&pdu->u.ret_submit, send); |
| 590 | break; |
| 591 | case USBIP_CMD_UNLINK: |
| 592 | correct_endian_cmd_unlink(&pdu->u.cmd_unlink, send); |
| 593 | break; |
| 594 | case USBIP_RET_UNLINK: |
| 595 | correct_endian_ret_unlink(&pdu->u.ret_unlink, send); |
| 596 | break; |
| 597 | default: |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 598 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 599 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 600 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 601 | } |
| 602 | } |
| 603 | EXPORT_SYMBOL_GPL(usbip_header_correct_endian); |
| 604 | |
matt mooney | 2282e1f | 2011-05-19 21:37:01 -0700 | [diff] [blame] | 605 | static void usbip_iso_packet_correct_endian( |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 606 | struct usbip_iso_packet_descriptor *iso, int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 607 | { |
| 608 | /* does not need all members. but copy all simply. */ |
| 609 | if (send) { |
| 610 | iso->offset = cpu_to_be32(iso->offset); |
| 611 | iso->length = cpu_to_be32(iso->length); |
| 612 | iso->status = cpu_to_be32(iso->status); |
| 613 | iso->actual_length = cpu_to_be32(iso->actual_length); |
| 614 | } else { |
| 615 | iso->offset = be32_to_cpu(iso->offset); |
| 616 | iso->length = be32_to_cpu(iso->length); |
| 617 | iso->status = be32_to_cpu(iso->status); |
| 618 | iso->actual_length = be32_to_cpu(iso->actual_length); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 623 | struct usb_iso_packet_descriptor *uiso, int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 624 | { |
| 625 | if (pack) { |
| 626 | iso->offset = uiso->offset; |
| 627 | iso->length = uiso->length; |
| 628 | iso->status = uiso->status; |
| 629 | iso->actual_length = uiso->actual_length; |
| 630 | } else { |
| 631 | uiso->offset = iso->offset; |
| 632 | uiso->length = iso->length; |
| 633 | uiso->status = iso->status; |
| 634 | uiso->actual_length = iso->actual_length; |
| 635 | } |
| 636 | } |
| 637 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 638 | /* must free buffer */ |
| 639 | void *usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen) |
| 640 | { |
| 641 | void *buff; |
| 642 | struct usbip_iso_packet_descriptor *iso; |
| 643 | int np = urb->number_of_packets; |
| 644 | ssize_t size = np * sizeof(*iso); |
| 645 | int i; |
| 646 | |
| 647 | buff = kzalloc(size, GFP_KERNEL); |
| 648 | if (!buff) |
| 649 | return NULL; |
| 650 | |
| 651 | for (i = 0; i < np; i++) { |
| 652 | iso = buff + (i * sizeof(*iso)); |
| 653 | |
| 654 | usbip_pack_iso(iso, &urb->iso_frame_desc[i], 1); |
matt mooney | 2282e1f | 2011-05-19 21:37:01 -0700 | [diff] [blame] | 655 | usbip_iso_packet_correct_endian(iso, 1); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 656 | } |
| 657 | |
| 658 | *bufflen = size; |
| 659 | |
| 660 | return buff; |
| 661 | } |
| 662 | EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu); |
| 663 | |
| 664 | /* some members of urb must be substituted before. */ |
| 665 | int usbip_recv_iso(struct usbip_device *ud, struct urb *urb) |
| 666 | { |
| 667 | void *buff; |
| 668 | struct usbip_iso_packet_descriptor *iso; |
| 669 | int np = urb->number_of_packets; |
| 670 | int size = np * sizeof(*iso); |
| 671 | int i; |
| 672 | int ret; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 673 | int total_length = 0; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 674 | |
| 675 | if (!usb_pipeisoc(urb->pipe)) |
| 676 | return 0; |
| 677 | |
| 678 | /* my Bluetooth dongle gets ISO URBs which are np = 0 */ |
| 679 | if (np == 0) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 680 | /* pr_info("iso np == 0\n"); */ |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 681 | /* usbip_dump_urb(urb); */ |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | buff = kzalloc(size, GFP_KERNEL); |
| 686 | if (!buff) |
| 687 | return -ENOMEM; |
| 688 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 689 | ret = usbip_recv(ud->tcp_socket, buff, size); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 690 | if (ret != size) { |
| 691 | dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n", |
| 692 | ret); |
| 693 | kfree(buff); |
| 694 | |
| 695 | if (ud->side == USBIP_STUB) |
| 696 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 697 | else |
| 698 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 699 | |
| 700 | return -EPIPE; |
| 701 | } |
| 702 | |
| 703 | for (i = 0; i < np; i++) { |
| 704 | iso = buff + (i * sizeof(*iso)); |
| 705 | |
matt mooney | 2282e1f | 2011-05-19 21:37:01 -0700 | [diff] [blame] | 706 | usbip_iso_packet_correct_endian(iso, 0); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 707 | usbip_pack_iso(iso, &urb->iso_frame_desc[i], 0); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 708 | total_length += urb->iso_frame_desc[i].actual_length; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 709 | } |
| 710 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 711 | kfree(buff); |
| 712 | |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 713 | if (total_length != urb->actual_length) { |
| 714 | dev_err(&urb->dev->dev, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 715 | "total length of iso packets %d not equal to actual " |
| 716 | "length of buffer %d\n", |
| 717 | total_length, urb->actual_length); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 718 | |
| 719 | if (ud->side == USBIP_STUB) |
| 720 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 721 | else |
| 722 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 723 | |
| 724 | return -EPIPE; |
| 725 | } |
| 726 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 727 | return ret; |
| 728 | } |
| 729 | EXPORT_SYMBOL_GPL(usbip_recv_iso); |
| 730 | |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 731 | /* |
| 732 | * This functions restores the padding which was removed for optimizing |
| 733 | * the bandwidth during transfer over tcp/ip |
| 734 | * |
| 735 | * buffer and iso packets need to be stored and be in propeper endian in urb |
| 736 | * before calling this function |
| 737 | */ |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame^] | 738 | void usbip_pad_iso(struct usbip_device *ud, struct urb *urb) |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 739 | { |
| 740 | int np = urb->number_of_packets; |
| 741 | int i; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 742 | int actualoffset = urb->actual_length; |
| 743 | |
| 744 | if (!usb_pipeisoc(urb->pipe)) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame^] | 745 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 746 | |
| 747 | /* if no packets or length of data is 0, then nothing to unpack */ |
| 748 | if (np == 0 || urb->actual_length == 0) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame^] | 749 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 750 | |
| 751 | /* |
| 752 | * if actual_length is transfer_buffer_length then no padding is |
| 753 | * present. |
| 754 | */ |
| 755 | if (urb->actual_length == urb->transfer_buffer_length) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame^] | 756 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 757 | |
| 758 | /* |
| 759 | * loop over all packets from last to first (to prevent overwritting |
| 760 | * memory when padding) and move them into the proper place |
| 761 | */ |
| 762 | for (i = np-1; i > 0; i--) { |
| 763 | actualoffset -= urb->iso_frame_desc[i].actual_length; |
| 764 | memmove(urb->transfer_buffer + urb->iso_frame_desc[i].offset, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 765 | urb->transfer_buffer + actualoffset, |
| 766 | urb->iso_frame_desc[i].actual_length); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 767 | } |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 768 | } |
| 769 | EXPORT_SYMBOL_GPL(usbip_pad_iso); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 770 | |
| 771 | /* some members of urb must be substituted before. */ |
| 772 | int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb) |
| 773 | { |
| 774 | int ret; |
| 775 | int size; |
| 776 | |
| 777 | if (ud->side == USBIP_STUB) { |
| 778 | /* stub_rx.c */ |
| 779 | /* the direction of urb must be OUT. */ |
| 780 | if (usb_pipein(urb->pipe)) |
| 781 | return 0; |
| 782 | |
| 783 | size = urb->transfer_buffer_length; |
| 784 | } else { |
| 785 | /* vhci_rx.c */ |
| 786 | /* the direction of urb must be IN. */ |
| 787 | if (usb_pipeout(urb->pipe)) |
| 788 | return 0; |
| 789 | |
| 790 | size = urb->actual_length; |
| 791 | } |
| 792 | |
| 793 | /* no need to recv xbuff */ |
| 794 | if (!(size > 0)) |
| 795 | return 0; |
| 796 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 797 | ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 798 | if (ret != size) { |
| 799 | dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret); |
| 800 | if (ud->side == USBIP_STUB) { |
| 801 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 802 | } else { |
| 803 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 804 | return -EPIPE; |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | return ret; |
| 809 | } |
| 810 | EXPORT_SYMBOL_GPL(usbip_recv_xbuff); |
| 811 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 812 | static int __init usbip_core_init(void) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 813 | { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 814 | pr_info(DRIVER_DESC " v" USBIP_VERSION "\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 815 | return 0; |
| 816 | } |
| 817 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 818 | static void __exit usbip_core_exit(void) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 819 | { |
| 820 | return; |
| 821 | } |
| 822 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 823 | module_init(usbip_core_init); |
| 824 | module_exit(usbip_core_exit); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 825 | |
| 826 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 827 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 828 | MODULE_LICENSE("GPL"); |
matt mooney | 6973c6f | 2011-05-11 01:54:14 -0700 | [diff] [blame] | 829 | MODULE_VERSION(USBIP_VERSION); |