Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2003-2008 Takahiro Hirofuchi |
Igor Kotrasinski | c7af4c2 | 2016-03-08 21:48:57 +0100 | [diff] [blame] | 3 | * Copyright (C) 2015-2016 Samsung Electronics |
| 4 | * Krzysztof Opasiak <k.opasiak@samsung.com> |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 5 | * |
| 6 | * This is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 19 | * USA. |
| 20 | */ |
| 21 | |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 22 | #include <asm/byteorder.h> |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 23 | #include <linux/file.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 24 | #include <linux/fs.h> |
| 25 | #include <linux/kernel.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 26 | #include <linux/slab.h> |
W. Trevor King | 93efc55 | 2012-08-16 22:22:36 -0400 | [diff] [blame] | 27 | #include <linux/stat.h> |
Paul Gortmaker | 4529623 | 2011-08-30 17:50:46 -0400 | [diff] [blame] | 28 | #include <linux/module.h> |
W. Trevor King | 93efc55 | 2012-08-16 22:22:36 -0400 | [diff] [blame] | 29 | #include <linux/moduleparam.h> |
matt mooney | 7aaacb4 | 2011-05-11 22:33:43 -0700 | [diff] [blame] | 30 | #include <net/sock.h> |
matt mooney | 4ce0a41 | 2011-05-06 03:47:56 -0700 | [diff] [blame] | 31 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 32 | #include "usbip_common.h" |
| 33 | |
matt mooney | 4ce0a41 | 2011-05-06 03:47:56 -0700 | [diff] [blame] | 34 | #define DRIVER_AUTHOR "Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>" |
matt mooney | 64e6242 | 2011-05-11 22:33:44 -0700 | [diff] [blame] | 35 | #define DRIVER_DESC "USB/IP Core" |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 36 | |
matt mooney | 64e6242 | 2011-05-11 22:33:44 -0700 | [diff] [blame] | 37 | #ifdef CONFIG_USBIP_DEBUG |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 38 | unsigned long usbip_debug_flag = 0xffffffff; |
| 39 | #else |
| 40 | unsigned long usbip_debug_flag; |
| 41 | #endif |
| 42 | EXPORT_SYMBOL_GPL(usbip_debug_flag); |
W. Trevor King | 93efc55 | 2012-08-16 22:22:36 -0400 | [diff] [blame] | 43 | module_param(usbip_debug_flag, ulong, S_IRUGO|S_IWUSR); |
| 44 | MODULE_PARM_DESC(usbip_debug_flag, "debug flags (defined in usbip_common.h)"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 45 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 46 | /* FIXME */ |
| 47 | struct device_attribute dev_attr_usbip_debug; |
| 48 | EXPORT_SYMBOL_GPL(dev_attr_usbip_debug); |
| 49 | |
Greg Kroah-Hartman | b1f56ac | 2013-08-26 12:02:54 -0700 | [diff] [blame] | 50 | static ssize_t usbip_debug_show(struct device *dev, |
| 51 | struct device_attribute *attr, char *buf) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 52 | { |
| 53 | return sprintf(buf, "%lx\n", usbip_debug_flag); |
| 54 | } |
| 55 | |
Greg Kroah-Hartman | b1f56ac | 2013-08-26 12:02:54 -0700 | [diff] [blame] | 56 | static ssize_t usbip_debug_store(struct device *dev, |
| 57 | struct device_attribute *attr, const char *buf, |
| 58 | size_t count) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 59 | { |
John de la Garza | bf988c1 | 2014-03-06 15:51:59 -0800 | [diff] [blame] | 60 | if (sscanf(buf, "%lx", &usbip_debug_flag) != 1) |
| 61 | return -EINVAL; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 62 | return count; |
| 63 | } |
Greg Kroah-Hartman | b1f56ac | 2013-08-26 12:02:54 -0700 | [diff] [blame] | 64 | DEVICE_ATTR_RW(usbip_debug); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 65 | |
| 66 | static void usbip_dump_buffer(char *buff, int bufflen) |
| 67 | { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 68 | print_hex_dump(KERN_DEBUG, "usbip-core", DUMP_PREFIX_OFFSET, 16, 4, |
Himanshu Chauhan | aad8657 | 2010-01-23 02:52:41 +0530 | [diff] [blame] | 69 | buff, bufflen, false); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | static void usbip_dump_pipe(unsigned int p) |
| 73 | { |
| 74 | unsigned char type = usb_pipetype(p); |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 75 | unsigned char ep = usb_pipeendpoint(p); |
| 76 | unsigned char dev = usb_pipedevice(p); |
| 77 | unsigned char dir = usb_pipein(p); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 78 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 79 | pr_debug("dev(%d) ep(%d) [%s] ", dev, ep, dir ? "IN" : "OUT"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 80 | |
| 81 | switch (type) { |
| 82 | case PIPE_ISOCHRONOUS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 83 | pr_debug("ISO\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 84 | break; |
| 85 | case PIPE_INTERRUPT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 86 | pr_debug("INT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 87 | break; |
| 88 | case PIPE_CONTROL: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 89 | pr_debug("CTRL\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 90 | break; |
| 91 | case PIPE_BULK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 92 | pr_debug("BULK\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 93 | break; |
| 94 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 95 | pr_debug("ERR\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 96 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 97 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | static void usbip_dump_usb_device(struct usb_device *udev) |
| 101 | { |
| 102 | struct device *dev = &udev->dev; |
| 103 | int i; |
| 104 | |
Shuah Khan | 09c8c8f | 2014-01-24 09:25:05 -0700 | [diff] [blame] | 105 | dev_dbg(dev, " devnum(%d) devpath(%s) usb speed(%s)", |
| 106 | udev->devnum, udev->devpath, usb_speed_string(udev->speed)); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 107 | |
Shuah Khan | 6851ec7 | 2017-12-22 17:00:06 -0700 | [diff] [blame] | 108 | pr_debug("tt hub ttport %d\n", udev->ttport); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 109 | |
| 110 | dev_dbg(dev, " "); |
| 111 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 112 | pr_debug(" %2u", i); |
| 113 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 114 | |
| 115 | dev_dbg(dev, " toggle0(IN) :"); |
| 116 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 117 | pr_debug(" %2u", (udev->toggle[0] & (1 << i)) ? 1 : 0); |
| 118 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 119 | |
| 120 | dev_dbg(dev, " toggle1(OUT):"); |
| 121 | for (i = 0; i < 16; i++) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 122 | pr_debug(" %2u", (udev->toggle[1] & (1 << i)) ? 1 : 0); |
| 123 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 124 | |
| 125 | dev_dbg(dev, " epmaxp_in :"); |
| 126 | for (i = 0; i < 16; i++) { |
| 127 | if (udev->ep_in[i]) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 128 | pr_debug(" %2u", |
| 129 | le16_to_cpu(udev->ep_in[i]->desc.wMaxPacketSize)); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 130 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 131 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 132 | |
| 133 | dev_dbg(dev, " epmaxp_out :"); |
| 134 | for (i = 0; i < 16; i++) { |
| 135 | if (udev->ep_out[i]) |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 136 | pr_debug(" %2u", |
| 137 | le16_to_cpu(udev->ep_out[i]->desc.wMaxPacketSize)); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 138 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 139 | pr_debug("\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 140 | |
Shuah Khan | 6851ec7 | 2017-12-22 17:00:06 -0700 | [diff] [blame] | 141 | dev_dbg(dev, "parent %s, bus %s\n", dev_name(&udev->parent->dev), |
| 142 | udev->bus->bus_name); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 143 | |
| 144 | dev_dbg(dev, "have_langid %d, string_langid %d\n", |
| 145 | udev->have_langid, udev->string_langid); |
| 146 | |
Lan Tianyu | ff823c7 | 2012-09-05 13:44:32 +0800 | [diff] [blame] | 147 | dev_dbg(dev, "maxchild %d\n", udev->maxchild); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | static void usbip_dump_request_type(__u8 rt) |
| 151 | { |
| 152 | switch (rt & USB_RECIP_MASK) { |
| 153 | case USB_RECIP_DEVICE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 154 | pr_debug("DEVICE"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 155 | break; |
| 156 | case USB_RECIP_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 157 | pr_debug("INTERF"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 158 | break; |
| 159 | case USB_RECIP_ENDPOINT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 160 | pr_debug("ENDPOI"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 161 | break; |
| 162 | case USB_RECIP_OTHER: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 163 | pr_debug("OTHER "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 164 | break; |
| 165 | default: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 166 | pr_debug("------"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 167 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 168 | } |
| 169 | } |
| 170 | |
| 171 | static void usbip_dump_usb_ctrlrequest(struct usb_ctrlrequest *cmd) |
| 172 | { |
| 173 | if (!cmd) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 174 | pr_debug(" : null pointer\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 175 | return; |
| 176 | } |
| 177 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 178 | pr_debug(" "); |
Cédric Cabessa | 6bb3ee6 | 2014-03-19 23:04:56 +0100 | [diff] [blame] | 179 | pr_debug("bRequestType(%02X) bRequest(%02X) wValue(%04X) wIndex(%04X) wLength(%04X) ", |
| 180 | cmd->bRequestType, cmd->bRequest, |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 181 | cmd->wValue, cmd->wIndex, cmd->wLength); |
| 182 | pr_debug("\n "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 183 | |
| 184 | if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 185 | pr_debug("STANDARD "); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 186 | switch (cmd->bRequest) { |
| 187 | case USB_REQ_GET_STATUS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 188 | pr_debug("GET_STATUS\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 189 | break; |
| 190 | case USB_REQ_CLEAR_FEATURE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 191 | pr_debug("CLEAR_FEAT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 192 | break; |
| 193 | case USB_REQ_SET_FEATURE: |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 194 | pr_debug("SET_FEAT\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 195 | break; |
| 196 | case USB_REQ_SET_ADDRESS: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 197 | pr_debug("SET_ADDRRS\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 198 | break; |
| 199 | case USB_REQ_GET_DESCRIPTOR: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 200 | pr_debug("GET_DESCRI\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 201 | break; |
| 202 | case USB_REQ_SET_DESCRIPTOR: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 203 | pr_debug("SET_DESCRI\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 204 | break; |
| 205 | case USB_REQ_GET_CONFIGURATION: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 206 | pr_debug("GET_CONFIG\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 207 | break; |
| 208 | case USB_REQ_SET_CONFIGURATION: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 209 | pr_debug("SET_CONFIG\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 210 | break; |
| 211 | case USB_REQ_GET_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 212 | pr_debug("GET_INTERF\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 213 | break; |
| 214 | case USB_REQ_SET_INTERFACE: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 215 | pr_debug("SET_INTERF\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 216 | break; |
| 217 | case USB_REQ_SYNCH_FRAME: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 218 | pr_debug("SYNC_FRAME\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 219 | break; |
| 220 | default: |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 221 | pr_debug("REQ(%02X)\n", cmd->bRequest); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 222 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 223 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 224 | usbip_dump_request_type(cmd->bRequestType); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 225 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) { |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 226 | pr_debug("CLASS\n"); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 227 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) { |
Akshay Joshi | 5ad7b85 | 2011-06-06 09:07:31 -0400 | [diff] [blame] | 228 | pr_debug("VENDOR\n"); |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 229 | } else if ((cmd->bRequestType & USB_TYPE_MASK) == USB_TYPE_RESERVED) { |
| 230 | pr_debug("RESERVED\n"); |
| 231 | } |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | void usbip_dump_urb(struct urb *urb) |
| 235 | { |
| 236 | struct device *dev; |
| 237 | |
| 238 | if (!urb) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 239 | pr_debug("urb: null pointer!!\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 240 | return; |
| 241 | } |
| 242 | |
| 243 | if (!urb->dev) { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 244 | pr_debug("urb->dev: null pointer!!\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 245 | return; |
| 246 | } |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 247 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 248 | dev = &urb->dev->dev; |
| 249 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 250 | usbip_dump_usb_device(urb->dev); |
| 251 | |
| 252 | dev_dbg(dev, " pipe :%08x ", urb->pipe); |
| 253 | |
| 254 | usbip_dump_pipe(urb->pipe); |
| 255 | |
| 256 | dev_dbg(dev, " status :%d\n", urb->status); |
| 257 | dev_dbg(dev, " transfer_flags :%08X\n", urb->transfer_flags); |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 258 | dev_dbg(dev, " transfer_buffer_length:%d\n", |
| 259 | urb->transfer_buffer_length); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 260 | dev_dbg(dev, " actual_length :%d\n", urb->actual_length); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 261 | |
| 262 | if (urb->setup_packet && usb_pipetype(urb->pipe) == PIPE_CONTROL) |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 263 | usbip_dump_usb_ctrlrequest( |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 264 | (struct usb_ctrlrequest *)urb->setup_packet); |
| 265 | |
| 266 | dev_dbg(dev, " start_frame :%d\n", urb->start_frame); |
| 267 | dev_dbg(dev, " number_of_packets :%d\n", urb->number_of_packets); |
| 268 | dev_dbg(dev, " interval :%d\n", urb->interval); |
| 269 | dev_dbg(dev, " error_count :%d\n", urb->error_count); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 270 | } |
| 271 | EXPORT_SYMBOL_GPL(usbip_dump_urb); |
| 272 | |
| 273 | void usbip_dump_header(struct usbip_header *pdu) |
| 274 | { |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 275 | pr_debug("BASE: cmd %u seq %u devid %u dir %u ep %u\n", |
| 276 | pdu->base.command, |
| 277 | pdu->base.seqnum, |
| 278 | pdu->base.devid, |
| 279 | pdu->base.direction, |
| 280 | pdu->base.ep); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 281 | |
| 282 | switch (pdu->base.command) { |
| 283 | case USBIP_CMD_SUBMIT: |
Cédric Cabessa | 6bb3ee6 | 2014-03-19 23:04:56 +0100 | [diff] [blame] | 284 | pr_debug("USBIP_CMD_SUBMIT: x_flags %u x_len %u sf %u #p %d iv %d\n", |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 285 | pdu->u.cmd_submit.transfer_flags, |
| 286 | pdu->u.cmd_submit.transfer_buffer_length, |
| 287 | pdu->u.cmd_submit.start_frame, |
| 288 | pdu->u.cmd_submit.number_of_packets, |
| 289 | pdu->u.cmd_submit.interval); |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 290 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 291 | case USBIP_CMD_UNLINK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 292 | pr_debug("USBIP_CMD_UNLINK: seq %u\n", |
| 293 | pdu->u.cmd_unlink.seqnum); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 294 | break; |
| 295 | case USBIP_RET_SUBMIT: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 296 | pr_debug("USBIP_RET_SUBMIT: st %d al %u sf %d #p %d ec %d\n", |
| 297 | pdu->u.ret_submit.status, |
| 298 | pdu->u.ret_submit.actual_length, |
| 299 | pdu->u.ret_submit.start_frame, |
| 300 | pdu->u.ret_submit.number_of_packets, |
| 301 | pdu->u.ret_submit.error_count); |
| 302 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 303 | case USBIP_RET_UNLINK: |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 304 | pr_debug("USBIP_RET_UNLINK: status %d\n", |
| 305 | pdu->u.ret_unlink.status); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 306 | break; |
| 307 | default: |
| 308 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 309 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 310 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 311 | } |
| 312 | } |
| 313 | EXPORT_SYMBOL_GPL(usbip_dump_header); |
| 314 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 315 | /* Receive data over TCP/IP. */ |
| 316 | int usbip_recv(struct socket *sock, void *buf, int size) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 317 | { |
| 318 | int result; |
| 319 | struct msghdr msg; |
| 320 | struct kvec iov; |
| 321 | int total = 0; |
| 322 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 323 | /* for blocks of if (usbip_dbg_flag_xmit) */ |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 324 | char *bp = buf; |
| 325 | int osize = size; |
| 326 | |
Shuah Khan | 1ef5c43 | 2017-12-15 10:50:09 -0700 | [diff] [blame] | 327 | if (!sock || !buf || !size) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 328 | return -EINVAL; |
Shuah Khan | 1ef5c43 | 2017-12-15 10:50:09 -0700 | [diff] [blame] | 329 | |
| 330 | usbip_dbg_xmit("enter\n"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 331 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 332 | do { |
| 333 | sock->sk->sk_allocation = GFP_NOIO; |
| 334 | iov.iov_base = buf; |
| 335 | iov.iov_len = size; |
| 336 | msg.msg_name = NULL; |
| 337 | msg.msg_namelen = 0; |
| 338 | msg.msg_control = NULL; |
| 339 | msg.msg_controllen = 0; |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 340 | msg.msg_flags = MSG_NOSIGNAL; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 341 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 342 | result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL); |
Shuah Khan | 1ef5c43 | 2017-12-15 10:50:09 -0700 | [diff] [blame] | 343 | if (result <= 0) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 344 | goto err; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 345 | |
| 346 | size -= result; |
| 347 | buf += result; |
| 348 | total += result; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 349 | } while (size > 0); |
| 350 | |
Brian G. Merrell | b8868e4 | 2009-07-21 00:46:13 -0600 | [diff] [blame] | 351 | if (usbip_dbg_flag_xmit) { |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 352 | if (!in_interrupt()) |
| 353 | pr_debug("%-10s:", current->comm); |
| 354 | else |
| 355 | pr_debug("interrupt :"); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 356 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 357 | pr_debug("receiving....\n"); |
| 358 | usbip_dump_buffer(bp, osize); |
| 359 | pr_debug("received, osize %d ret %d size %d total %d\n", |
Stefan Reif | ca9fb17 | 2013-04-04 16:03:07 +0200 | [diff] [blame] | 360 | osize, result, size, total); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | return total; |
| 364 | |
| 365 | err: |
| 366 | return result; |
| 367 | } |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 368 | EXPORT_SYMBOL_GPL(usbip_recv); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 369 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 370 | /* there may be more cases to tweak the flags. */ |
| 371 | static unsigned int tweak_transfer_flags(unsigned int flags) |
| 372 | { |
Alan Stern | 85bcb5e | 2010-04-30 16:35:37 -0400 | [diff] [blame] | 373 | flags &= ~URB_NO_TRANSFER_DMA_MAP; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 374 | return flags; |
| 375 | } |
| 376 | |
| 377 | 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] | 378 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 379 | { |
| 380 | struct usbip_header_cmd_submit *spdu = &pdu->u.cmd_submit; |
| 381 | |
| 382 | /* |
| 383 | * Some members are not still implemented in usbip. I hope this issue |
| 384 | * will be discussed when usbip is ported to other operating systems. |
| 385 | */ |
| 386 | if (pack) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 387 | spdu->transfer_flags = |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 388 | tweak_transfer_flags(urb->transfer_flags); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 389 | spdu->transfer_buffer_length = urb->transfer_buffer_length; |
| 390 | spdu->start_frame = urb->start_frame; |
| 391 | spdu->number_of_packets = urb->number_of_packets; |
| 392 | spdu->interval = urb->interval; |
| 393 | } else { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 394 | urb->transfer_flags = spdu->transfer_flags; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 395 | urb->transfer_buffer_length = spdu->transfer_buffer_length; |
| 396 | urb->start_frame = spdu->start_frame; |
| 397 | urb->number_of_packets = spdu->number_of_packets; |
| 398 | urb->interval = spdu->interval; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | 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] | 403 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 404 | { |
| 405 | struct usbip_header_ret_submit *rpdu = &pdu->u.ret_submit; |
| 406 | |
| 407 | if (pack) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 408 | rpdu->status = urb->status; |
| 409 | rpdu->actual_length = urb->actual_length; |
| 410 | rpdu->start_frame = urb->start_frame; |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 411 | rpdu->number_of_packets = urb->number_of_packets; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 412 | rpdu->error_count = urb->error_count; |
| 413 | } else { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 414 | urb->status = rpdu->status; |
| 415 | urb->actual_length = rpdu->actual_length; |
| 416 | urb->start_frame = rpdu->start_frame; |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 417 | urb->number_of_packets = rpdu->number_of_packets; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 418 | urb->error_count = rpdu->error_count; |
| 419 | } |
| 420 | } |
| 421 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 422 | 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] | 423 | int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 424 | { |
| 425 | switch (cmd) { |
| 426 | case USBIP_CMD_SUBMIT: |
| 427 | usbip_pack_cmd_submit(pdu, urb, pack); |
| 428 | break; |
| 429 | case USBIP_RET_SUBMIT: |
| 430 | usbip_pack_ret_submit(pdu, urb, pack); |
| 431 | break; |
| 432 | default: |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 433 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 434 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 435 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 436 | } |
| 437 | } |
| 438 | EXPORT_SYMBOL_GPL(usbip_pack_pdu); |
| 439 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 440 | static void correct_endian_basic(struct usbip_header_basic *base, int send) |
| 441 | { |
| 442 | if (send) { |
| 443 | base->command = cpu_to_be32(base->command); |
| 444 | base->seqnum = cpu_to_be32(base->seqnum); |
| 445 | base->devid = cpu_to_be32(base->devid); |
| 446 | base->direction = cpu_to_be32(base->direction); |
| 447 | base->ep = cpu_to_be32(base->ep); |
| 448 | } else { |
| 449 | base->command = be32_to_cpu(base->command); |
| 450 | base->seqnum = be32_to_cpu(base->seqnum); |
| 451 | base->devid = be32_to_cpu(base->devid); |
| 452 | base->direction = be32_to_cpu(base->direction); |
| 453 | base->ep = be32_to_cpu(base->ep); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | static void correct_endian_cmd_submit(struct usbip_header_cmd_submit *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 458 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 459 | { |
| 460 | if (send) { |
| 461 | pdu->transfer_flags = cpu_to_be32(pdu->transfer_flags); |
| 462 | |
| 463 | cpu_to_be32s(&pdu->transfer_buffer_length); |
| 464 | cpu_to_be32s(&pdu->start_frame); |
| 465 | cpu_to_be32s(&pdu->number_of_packets); |
| 466 | cpu_to_be32s(&pdu->interval); |
| 467 | } else { |
| 468 | pdu->transfer_flags = be32_to_cpu(pdu->transfer_flags); |
| 469 | |
| 470 | be32_to_cpus(&pdu->transfer_buffer_length); |
| 471 | be32_to_cpus(&pdu->start_frame); |
| 472 | be32_to_cpus(&pdu->number_of_packets); |
| 473 | be32_to_cpus(&pdu->interval); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | static void correct_endian_ret_submit(struct usbip_header_ret_submit *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 478 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 479 | { |
| 480 | if (send) { |
| 481 | cpu_to_be32s(&pdu->status); |
| 482 | cpu_to_be32s(&pdu->actual_length); |
| 483 | cpu_to_be32s(&pdu->start_frame); |
Arjan Mels | 1325f85 | 2011-04-05 20:26:38 +0200 | [diff] [blame] | 484 | cpu_to_be32s(&pdu->number_of_packets); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 485 | cpu_to_be32s(&pdu->error_count); |
| 486 | } else { |
| 487 | be32_to_cpus(&pdu->status); |
| 488 | be32_to_cpus(&pdu->actual_length); |
| 489 | be32_to_cpus(&pdu->start_frame); |
David Chang | cacd18a | 2011-05-12 18:31:11 +0800 | [diff] [blame] | 490 | be32_to_cpus(&pdu->number_of_packets); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 491 | be32_to_cpus(&pdu->error_count); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | static void correct_endian_cmd_unlink(struct usbip_header_cmd_unlink *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 496 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 497 | { |
| 498 | if (send) |
| 499 | pdu->seqnum = cpu_to_be32(pdu->seqnum); |
| 500 | else |
| 501 | pdu->seqnum = be32_to_cpu(pdu->seqnum); |
| 502 | } |
| 503 | |
| 504 | static void correct_endian_ret_unlink(struct usbip_header_ret_unlink *pdu, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 505 | int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 506 | { |
| 507 | if (send) |
| 508 | cpu_to_be32s(&pdu->status); |
| 509 | else |
| 510 | be32_to_cpus(&pdu->status); |
| 511 | } |
| 512 | |
| 513 | void usbip_header_correct_endian(struct usbip_header *pdu, int send) |
| 514 | { |
| 515 | __u32 cmd = 0; |
| 516 | |
| 517 | if (send) |
| 518 | cmd = pdu->base.command; |
| 519 | |
| 520 | correct_endian_basic(&pdu->base, send); |
| 521 | |
| 522 | if (!send) |
| 523 | cmd = pdu->base.command; |
| 524 | |
| 525 | switch (cmd) { |
| 526 | case USBIP_CMD_SUBMIT: |
| 527 | correct_endian_cmd_submit(&pdu->u.cmd_submit, send); |
| 528 | break; |
| 529 | case USBIP_RET_SUBMIT: |
| 530 | correct_endian_ret_submit(&pdu->u.ret_submit, send); |
| 531 | break; |
| 532 | case USBIP_CMD_UNLINK: |
| 533 | correct_endian_cmd_unlink(&pdu->u.cmd_unlink, send); |
| 534 | break; |
| 535 | case USBIP_RET_UNLINK: |
| 536 | correct_endian_ret_unlink(&pdu->u.ret_unlink, send); |
| 537 | break; |
| 538 | default: |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 539 | /* NOT REACHED */ |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 540 | pr_err("unknown command\n"); |
matt mooney | 49aecef | 2011-05-06 03:47:54 -0700 | [diff] [blame] | 541 | break; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 542 | } |
| 543 | } |
| 544 | EXPORT_SYMBOL_GPL(usbip_header_correct_endian); |
| 545 | |
matt mooney | 2282e1f | 2011-05-19 21:37:01 -0700 | [diff] [blame] | 546 | static void usbip_iso_packet_correct_endian( |
matt mooney | 8735276 | 2011-05-19 21:36:56 -0700 | [diff] [blame] | 547 | struct usbip_iso_packet_descriptor *iso, int send) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 548 | { |
| 549 | /* does not need all members. but copy all simply. */ |
| 550 | if (send) { |
| 551 | iso->offset = cpu_to_be32(iso->offset); |
| 552 | iso->length = cpu_to_be32(iso->length); |
| 553 | iso->status = cpu_to_be32(iso->status); |
| 554 | iso->actual_length = cpu_to_be32(iso->actual_length); |
| 555 | } else { |
| 556 | iso->offset = be32_to_cpu(iso->offset); |
| 557 | iso->length = be32_to_cpu(iso->length); |
| 558 | iso->status = be32_to_cpu(iso->status); |
| 559 | iso->actual_length = be32_to_cpu(iso->actual_length); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | static void usbip_pack_iso(struct usbip_iso_packet_descriptor *iso, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 564 | struct usb_iso_packet_descriptor *uiso, int pack) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 565 | { |
| 566 | if (pack) { |
| 567 | iso->offset = uiso->offset; |
| 568 | iso->length = uiso->length; |
| 569 | iso->status = uiso->status; |
| 570 | iso->actual_length = uiso->actual_length; |
| 571 | } else { |
| 572 | uiso->offset = iso->offset; |
| 573 | uiso->length = iso->length; |
| 574 | uiso->status = iso->status; |
| 575 | uiso->actual_length = iso->actual_length; |
| 576 | } |
| 577 | } |
| 578 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 579 | /* must free buffer */ |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 580 | struct usbip_iso_packet_descriptor* |
| 581 | usbip_alloc_iso_desc_pdu(struct urb *urb, ssize_t *bufflen) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 582 | { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 583 | struct usbip_iso_packet_descriptor *iso; |
| 584 | int np = urb->number_of_packets; |
| 585 | ssize_t size = np * sizeof(*iso); |
| 586 | int i; |
| 587 | |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 588 | iso = kzalloc(size, GFP_KERNEL); |
| 589 | if (!iso) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 590 | return NULL; |
| 591 | |
| 592 | for (i = 0; i < np; i++) { |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 593 | usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 1); |
| 594 | usbip_iso_packet_correct_endian(&iso[i], 1); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | *bufflen = size; |
| 598 | |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 599 | return iso; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 600 | } |
| 601 | EXPORT_SYMBOL_GPL(usbip_alloc_iso_desc_pdu); |
| 602 | |
| 603 | /* some members of urb must be substituted before. */ |
| 604 | int usbip_recv_iso(struct usbip_device *ud, struct urb *urb) |
| 605 | { |
| 606 | void *buff; |
| 607 | struct usbip_iso_packet_descriptor *iso; |
| 608 | int np = urb->number_of_packets; |
| 609 | int size = np * sizeof(*iso); |
| 610 | int i; |
| 611 | int ret; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 612 | int total_length = 0; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 613 | |
| 614 | if (!usb_pipeisoc(urb->pipe)) |
| 615 | return 0; |
| 616 | |
| 617 | /* my Bluetooth dongle gets ISO URBs which are np = 0 */ |
Jake Champlin | f14287b | 2013-01-16 22:16:05 -0500 | [diff] [blame] | 618 | if (np == 0) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 619 | return 0; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 620 | |
| 621 | buff = kzalloc(size, GFP_KERNEL); |
| 622 | if (!buff) |
| 623 | return -ENOMEM; |
| 624 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 625 | ret = usbip_recv(ud->tcp_socket, buff, size); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 626 | if (ret != size) { |
| 627 | dev_err(&urb->dev->dev, "recv iso_frame_descriptor, %d\n", |
| 628 | ret); |
| 629 | kfree(buff); |
| 630 | |
Igor Kotrasinski | c7af4c2 | 2016-03-08 21:48:57 +0100 | [diff] [blame] | 631 | if (ud->side == USBIP_STUB || ud->side == USBIP_VUDC) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 632 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 633 | else |
| 634 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 635 | |
| 636 | return -EPIPE; |
| 637 | } |
| 638 | |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 639 | iso = (struct usbip_iso_packet_descriptor *) buff; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 640 | for (i = 0; i < np; i++) { |
Bart Westgeest | 36ac9b0 | 2012-10-10 13:34:25 -0400 | [diff] [blame] | 641 | usbip_iso_packet_correct_endian(&iso[i], 0); |
| 642 | usbip_pack_iso(&iso[i], &urb->iso_frame_desc[i], 0); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 643 | total_length += urb->iso_frame_desc[i].actual_length; |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 644 | } |
| 645 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 646 | kfree(buff); |
| 647 | |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 648 | if (total_length != urb->actual_length) { |
| 649 | dev_err(&urb->dev->dev, |
Cédric Cabessa | 6bb3ee6 | 2014-03-19 23:04:56 +0100 | [diff] [blame] | 650 | "total length of iso packets %d not equal to actual length of buffer %d\n", |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 651 | total_length, urb->actual_length); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 652 | |
Igor Kotrasinski | c7af4c2 | 2016-03-08 21:48:57 +0100 | [diff] [blame] | 653 | if (ud->side == USBIP_STUB || ud->side == USBIP_VUDC) |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 654 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 655 | else |
| 656 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 657 | |
| 658 | return -EPIPE; |
| 659 | } |
| 660 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 661 | return ret; |
| 662 | } |
| 663 | EXPORT_SYMBOL_GPL(usbip_recv_iso); |
| 664 | |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 665 | /* |
| 666 | * This functions restores the padding which was removed for optimizing |
| 667 | * the bandwidth during transfer over tcp/ip |
| 668 | * |
| 669 | * buffer and iso packets need to be stored and be in propeper endian in urb |
| 670 | * before calling this function |
| 671 | */ |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame] | 672 | void usbip_pad_iso(struct usbip_device *ud, struct urb *urb) |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 673 | { |
| 674 | int np = urb->number_of_packets; |
| 675 | int i; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 676 | int actualoffset = urb->actual_length; |
| 677 | |
| 678 | if (!usb_pipeisoc(urb->pipe)) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame] | 679 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 680 | |
| 681 | /* if no packets or length of data is 0, then nothing to unpack */ |
| 682 | if (np == 0 || urb->actual_length == 0) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame] | 683 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 684 | |
| 685 | /* |
| 686 | * if actual_length is transfer_buffer_length then no padding is |
| 687 | * present. |
Bart Westgeest | c7f0089 | 2012-10-10 13:34:27 -0400 | [diff] [blame] | 688 | */ |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 689 | if (urb->actual_length == urb->transfer_buffer_length) |
Bart Westgeest | ac2b41a | 2012-01-23 10:55:46 -0500 | [diff] [blame] | 690 | return; |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 691 | |
| 692 | /* |
| 693 | * loop over all packets from last to first (to prevent overwritting |
| 694 | * memory when padding) and move them into the proper place |
| 695 | */ |
| 696 | for (i = np-1; i > 0; i--) { |
| 697 | actualoffset -= urb->iso_frame_desc[i].actual_length; |
| 698 | memmove(urb->transfer_buffer + urb->iso_frame_desc[i].offset, |
matt mooney | f9eacc9 | 2011-05-06 03:47:46 -0700 | [diff] [blame] | 699 | urb->transfer_buffer + actualoffset, |
| 700 | urb->iso_frame_desc[i].actual_length); |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 701 | } |
Arjan Mels | 28276a2 | 2011-04-05 20:26:59 +0200 | [diff] [blame] | 702 | } |
| 703 | EXPORT_SYMBOL_GPL(usbip_pad_iso); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 704 | |
| 705 | /* some members of urb must be substituted before. */ |
| 706 | int usbip_recv_xbuff(struct usbip_device *ud, struct urb *urb) |
| 707 | { |
| 708 | int ret; |
| 709 | int size; |
| 710 | |
Igor Kotrasinski | c7af4c2 | 2016-03-08 21:48:57 +0100 | [diff] [blame] | 711 | if (ud->side == USBIP_STUB || ud->side == USBIP_VUDC) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 712 | /* the direction of urb must be OUT. */ |
| 713 | if (usb_pipein(urb->pipe)) |
| 714 | return 0; |
| 715 | |
| 716 | size = urb->transfer_buffer_length; |
| 717 | } else { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 718 | /* the direction of urb must be IN. */ |
| 719 | if (usb_pipeout(urb->pipe)) |
| 720 | return 0; |
| 721 | |
| 722 | size = urb->actual_length; |
| 723 | } |
| 724 | |
| 725 | /* no need to recv xbuff */ |
| 726 | if (!(size > 0)) |
| 727 | return 0; |
| 728 | |
Ignat Korchagin | b348d7d | 2016-03-17 18:00:29 +0000 | [diff] [blame] | 729 | if (size > urb->transfer_buffer_length) { |
| 730 | /* should not happen, probably malicious packet */ |
| 731 | if (ud->side == USBIP_STUB) { |
| 732 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 733 | return 0; |
| 734 | } else { |
| 735 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 736 | return -EPIPE; |
| 737 | } |
| 738 | } |
| 739 | |
Bart Westgeest | 5a08c52 | 2011-12-19 17:44:11 -0500 | [diff] [blame] | 740 | ret = usbip_recv(ud->tcp_socket, urb->transfer_buffer, size); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 741 | if (ret != size) { |
| 742 | dev_err(&urb->dev->dev, "recv xbuf, %d\n", ret); |
Igor Kotrasinski | c7af4c2 | 2016-03-08 21:48:57 +0100 | [diff] [blame] | 743 | if (ud->side == USBIP_STUB || ud->side == USBIP_VUDC) { |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 744 | usbip_event_add(ud, SDEV_EVENT_ERROR_TCP); |
| 745 | } else { |
| 746 | usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); |
| 747 | return -EPIPE; |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | return ret; |
| 752 | } |
| 753 | EXPORT_SYMBOL_GPL(usbip_recv_xbuff); |
| 754 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 755 | static int __init usbip_core_init(void) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 756 | { |
Nobuo Iwata | bb7871a | 2016-03-24 10:50:59 +0900 | [diff] [blame] | 757 | int ret; |
| 758 | |
matt mooney | 1a4b6f6 | 2011-05-19 16:47:32 -0700 | [diff] [blame] | 759 | pr_info(DRIVER_DESC " v" USBIP_VERSION "\n"); |
Nobuo Iwata | bb7871a | 2016-03-24 10:50:59 +0900 | [diff] [blame] | 760 | ret = usbip_init_eh(); |
| 761 | if (ret) |
| 762 | return ret; |
| 763 | |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 764 | return 0; |
| 765 | } |
| 766 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 767 | static void __exit usbip_core_exit(void) |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 768 | { |
Nobuo Iwata | bb7871a | 2016-03-24 10:50:59 +0900 | [diff] [blame] | 769 | usbip_finish_eh(); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 770 | return; |
| 771 | } |
| 772 | |
matt mooney | 3028d0a | 2011-05-19 21:37:05 -0700 | [diff] [blame] | 773 | module_init(usbip_core_init); |
| 774 | module_exit(usbip_core_exit); |
Takahiro Hirofuchi | 05a1f28 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 775 | |
| 776 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 777 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 778 | MODULE_LICENSE("GPL"); |
matt mooney | 6973c6f | 2011-05-11 01:54:14 -0700 | [diff] [blame] | 779 | MODULE_VERSION(USBIP_VERSION); |