Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1 | /* |
| 2 | * cdc_ncm.c |
| 3 | * |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 4 | * Copyright (C) ST-Ericsson 2010-2012 |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 5 | * Contact: Alexey Orishko <alexey.orishko@stericsson.com> |
| 6 | * Original author: Hans Petter Selasky <hans.petter.selasky@stericsson.com> |
| 7 | * |
| 8 | * USB Host Driver for Network Control Model (NCM) |
Enrico Mioso | 22401ff | 2015-07-11 17:30:01 +0200 | [diff] [blame] | 9 | * http://www.usb.org/developers/docs/devclass_docs/NCM10_012011.zip |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 10 | * |
| 11 | * The NCM encoding, decoding and initialization logic |
| 12 | * derives from FreeBSD 8.x. if_cdce.c and if_cdcereg.h |
| 13 | * |
| 14 | * This software is available to you under a choice of one of two |
| 15 | * licenses. You may choose this file to be licensed under the terms |
| 16 | * of the GNU General Public License (GPL) Version 2 or the 2-clause |
| 17 | * BSD license listed below: |
| 18 | * |
| 19 | * Redistribution and use in source and binary forms, with or without |
| 20 | * modification, are permitted provided that the following conditions |
| 21 | * are met: |
| 22 | * 1. Redistributions of source code must retain the above copyright |
| 23 | * notice, this list of conditions and the following disclaimer. |
| 24 | * 2. Redistributions in binary form must reproduce the above copyright |
| 25 | * notice, this list of conditions and the following disclaimer in the |
| 26 | * documentation and/or other materials provided with the distribution. |
| 27 | * |
| 28 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 38 | * SUCH DAMAGE. |
| 39 | */ |
| 40 | |
| 41 | #include <linux/module.h> |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 42 | #include <linux/netdevice.h> |
| 43 | #include <linux/ctype.h> |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 44 | #include <linux/etherdevice.h> |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 45 | #include <linux/ethtool.h> |
| 46 | #include <linux/workqueue.h> |
| 47 | #include <linux/mii.h> |
| 48 | #include <linux/crc32.h> |
| 49 | #include <linux/usb.h> |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 50 | #include <linux/hrtimer.h> |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 51 | #include <linux/atomic.h> |
| 52 | #include <linux/usb/usbnet.h> |
| 53 | #include <linux/usb/cdc.h> |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 54 | #include <linux/usb/cdc_ncm.h> |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 55 | |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 56 | #if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM) |
| 57 | static bool prefer_mbim = true; |
| 58 | #else |
| 59 | static bool prefer_mbim; |
| 60 | #endif |
Joe Perches | d61e403 | 2018-03-23 15:54:39 -0700 | [diff] [blame] | 61 | module_param(prefer_mbim, bool, 0644); |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 62 | MODULE_PARM_DESC(prefer_mbim, "Prefer MBIM setting on dual NCM/MBIM functions"); |
| 63 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 64 | static void cdc_ncm_txpath_bh(unsigned long param); |
| 65 | static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx); |
| 66 | static enum hrtimer_restart cdc_ncm_tx_timer_cb(struct hrtimer *hr_timer); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 67 | static struct usb_driver cdc_ncm_driver; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 68 | |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 69 | struct cdc_ncm_stats { |
| 70 | char stat_string[ETH_GSTRING_LEN]; |
| 71 | int sizeof_stat; |
| 72 | int stat_offset; |
| 73 | }; |
| 74 | |
| 75 | #define CDC_NCM_STAT(str, m) { \ |
| 76 | .stat_string = str, \ |
| 77 | .sizeof_stat = sizeof(((struct cdc_ncm_ctx *)0)->m), \ |
| 78 | .stat_offset = offsetof(struct cdc_ncm_ctx, m) } |
| 79 | #define CDC_NCM_SIMPLE_STAT(m) CDC_NCM_STAT(__stringify(m), m) |
| 80 | |
| 81 | static const struct cdc_ncm_stats cdc_ncm_gstrings_stats[] = { |
| 82 | CDC_NCM_SIMPLE_STAT(tx_reason_ntb_full), |
| 83 | CDC_NCM_SIMPLE_STAT(tx_reason_ndp_full), |
| 84 | CDC_NCM_SIMPLE_STAT(tx_reason_timeout), |
| 85 | CDC_NCM_SIMPLE_STAT(tx_reason_max_datagram), |
| 86 | CDC_NCM_SIMPLE_STAT(tx_overhead), |
| 87 | CDC_NCM_SIMPLE_STAT(tx_ntbs), |
| 88 | CDC_NCM_SIMPLE_STAT(rx_overhead), |
| 89 | CDC_NCM_SIMPLE_STAT(rx_ntbs), |
| 90 | }; |
| 91 | |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 92 | #define CDC_NCM_LOW_MEM_MAX_CNT 10 |
| 93 | |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 94 | static int cdc_ncm_get_sset_count(struct net_device __always_unused *netdev, int sset) |
| 95 | { |
| 96 | switch (sset) { |
| 97 | case ETH_SS_STATS: |
| 98 | return ARRAY_SIZE(cdc_ncm_gstrings_stats); |
| 99 | default: |
| 100 | return -EOPNOTSUPP; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | static void cdc_ncm_get_ethtool_stats(struct net_device *netdev, |
| 105 | struct ethtool_stats __always_unused *stats, |
| 106 | u64 *data) |
| 107 | { |
| 108 | struct usbnet *dev = netdev_priv(netdev); |
| 109 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 110 | int i; |
| 111 | char *p = NULL; |
| 112 | |
| 113 | for (i = 0; i < ARRAY_SIZE(cdc_ncm_gstrings_stats); i++) { |
| 114 | p = (char *)ctx + cdc_ncm_gstrings_stats[i].stat_offset; |
| 115 | data[i] = (cdc_ncm_gstrings_stats[i].sizeof_stat == sizeof(u64)) ? *(u64 *)p : *(u32 *)p; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static void cdc_ncm_get_strings(struct net_device __always_unused *netdev, u32 stringset, u8 *data) |
| 120 | { |
| 121 | u8 *p = data; |
| 122 | int i; |
| 123 | |
| 124 | switch (stringset) { |
| 125 | case ETH_SS_STATS: |
| 126 | for (i = 0; i < ARRAY_SIZE(cdc_ncm_gstrings_stats); i++) { |
| 127 | memcpy(p, cdc_ncm_gstrings_stats[i].stat_string, ETH_GSTRING_LEN); |
| 128 | p += ETH_GSTRING_LEN; |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 133 | static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx); |
| 134 | |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 135 | static const struct ethtool_ops cdc_ncm_ethtool_ops = { |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 136 | .get_link = usbnet_get_link, |
| 137 | .nway_reset = usbnet_nway_reset, |
| 138 | .get_drvinfo = usbnet_get_drvinfo, |
| 139 | .get_msglevel = usbnet_get_msglevel, |
| 140 | .set_msglevel = usbnet_set_msglevel, |
| 141 | .get_ts_info = ethtool_op_get_ts_info, |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 142 | .get_sset_count = cdc_ncm_get_sset_count, |
| 143 | .get_strings = cdc_ncm_get_strings, |
| 144 | .get_ethtool_stats = cdc_ncm_get_ethtool_stats, |
Philippe Reynes | d0b3ab3 | 2017-03-16 23:18:50 +0100 | [diff] [blame] | 145 | .get_link_ksettings = usbnet_get_link_ksettings, |
| 146 | .set_link_ksettings = usbnet_set_link_ksettings, |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 147 | }; |
| 148 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 149 | static u32 cdc_ncm_check_rx_max(struct usbnet *dev, u32 new_rx) |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 150 | { |
| 151 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 152 | u32 val, max, min; |
| 153 | |
| 154 | /* clamp new_rx to sane values */ |
| 155 | min = USB_CDC_NCM_NTB_MIN_IN_SIZE; |
| 156 | max = min_t(u32, CDC_NCM_NTB_MAX_SIZE_RX, le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize)); |
| 157 | |
| 158 | /* dwNtbInMaxSize spec violation? Use MIN size for both limits */ |
| 159 | if (max < min) { |
| 160 | dev_warn(&dev->intf->dev, "dwNtbInMaxSize=%u is too small. Using %u\n", |
| 161 | le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize), min); |
| 162 | max = min; |
| 163 | } |
| 164 | |
| 165 | val = clamp_t(u32, new_rx, min, max); |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 166 | if (val != new_rx) |
| 167 | dev_dbg(&dev->intf->dev, "rx_max must be in the [%u, %u] range\n", min, max); |
| 168 | |
| 169 | return val; |
| 170 | } |
| 171 | |
| 172 | static u32 cdc_ncm_check_tx_max(struct usbnet *dev, u32 new_tx) |
| 173 | { |
| 174 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 175 | u32 val, max, min; |
| 176 | |
| 177 | /* clamp new_tx to sane values */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 178 | if (ctx->is_ndp16) |
| 179 | min = ctx->max_datagram_size + ctx->max_ndp_size + sizeof(struct usb_cdc_ncm_nth16); |
| 180 | else |
| 181 | min = ctx->max_datagram_size + ctx->max_ndp_size + sizeof(struct usb_cdc_ncm_nth32); |
| 182 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 183 | max = min_t(u32, CDC_NCM_NTB_MAX_SIZE_TX, le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize)); |
| 184 | |
| 185 | /* some devices set dwNtbOutMaxSize too low for the above default */ |
| 186 | min = min(min, max); |
| 187 | |
| 188 | val = clamp_t(u32, new_tx, min, max); |
| 189 | if (val != new_tx) |
| 190 | dev_dbg(&dev->intf->dev, "tx_max must be in the [%u, %u] range\n", min, max); |
| 191 | |
| 192 | return val; |
| 193 | } |
| 194 | |
Bjørn Mork | 39eb7e0 | 2014-05-30 09:31:09 +0200 | [diff] [blame] | 195 | static ssize_t cdc_ncm_show_min_tx_pkt(struct device *d, struct device_attribute *attr, char *buf) |
| 196 | { |
| 197 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 198 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 199 | |
| 200 | return sprintf(buf, "%u\n", ctx->min_tx_pkt); |
| 201 | } |
| 202 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 203 | static ssize_t cdc_ncm_show_rx_max(struct device *d, struct device_attribute *attr, char *buf) |
| 204 | { |
| 205 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 206 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 207 | |
| 208 | return sprintf(buf, "%u\n", ctx->rx_max); |
| 209 | } |
| 210 | |
| 211 | static ssize_t cdc_ncm_show_tx_max(struct device *d, struct device_attribute *attr, char *buf) |
| 212 | { |
| 213 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 214 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 215 | |
| 216 | return sprintf(buf, "%u\n", ctx->tx_max); |
| 217 | } |
| 218 | |
| 219 | static ssize_t cdc_ncm_show_tx_timer_usecs(struct device *d, struct device_attribute *attr, char *buf) |
| 220 | { |
| 221 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 222 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 223 | |
| 224 | return sprintf(buf, "%u\n", ctx->timer_interval / (u32)NSEC_PER_USEC); |
| 225 | } |
| 226 | |
Bjørn Mork | 39eb7e0 | 2014-05-30 09:31:09 +0200 | [diff] [blame] | 227 | static ssize_t cdc_ncm_store_min_tx_pkt(struct device *d, struct device_attribute *attr, const char *buf, size_t len) |
| 228 | { |
| 229 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 230 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 231 | unsigned long val; |
| 232 | |
| 233 | /* no need to restrict values - anything from 0 to infinity is OK */ |
| 234 | if (kstrtoul(buf, 0, &val)) |
| 235 | return -EINVAL; |
| 236 | |
| 237 | ctx->min_tx_pkt = val; |
| 238 | return len; |
| 239 | } |
| 240 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 241 | static ssize_t cdc_ncm_store_rx_max(struct device *d, struct device_attribute *attr, const char *buf, size_t len) |
| 242 | { |
| 243 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 244 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 245 | unsigned long val; |
| 246 | |
| 247 | if (kstrtoul(buf, 0, &val) || cdc_ncm_check_rx_max(dev, val) != val) |
| 248 | return -EINVAL; |
| 249 | |
| 250 | cdc_ncm_update_rxtx_max(dev, val, ctx->tx_max); |
| 251 | return len; |
| 252 | } |
| 253 | |
| 254 | static ssize_t cdc_ncm_store_tx_max(struct device *d, struct device_attribute *attr, const char *buf, size_t len) |
| 255 | { |
| 256 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 257 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 258 | unsigned long val; |
| 259 | |
| 260 | if (kstrtoul(buf, 0, &val) || cdc_ncm_check_tx_max(dev, val) != val) |
| 261 | return -EINVAL; |
| 262 | |
| 263 | cdc_ncm_update_rxtx_max(dev, ctx->rx_max, val); |
| 264 | return len; |
| 265 | } |
| 266 | |
| 267 | static ssize_t cdc_ncm_store_tx_timer_usecs(struct device *d, struct device_attribute *attr, const char *buf, size_t len) |
| 268 | { |
| 269 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 270 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 271 | ssize_t ret; |
| 272 | unsigned long val; |
| 273 | |
| 274 | ret = kstrtoul(buf, 0, &val); |
| 275 | if (ret) |
| 276 | return ret; |
| 277 | if (val && (val < CDC_NCM_TIMER_INTERVAL_MIN || val > CDC_NCM_TIMER_INTERVAL_MAX)) |
| 278 | return -EINVAL; |
| 279 | |
| 280 | spin_lock_bh(&ctx->mtx); |
| 281 | ctx->timer_interval = val * NSEC_PER_USEC; |
| 282 | if (!ctx->timer_interval) |
| 283 | ctx->tx_timer_pending = 0; |
| 284 | spin_unlock_bh(&ctx->mtx); |
| 285 | return len; |
| 286 | } |
| 287 | |
Joe Perches | d61e403 | 2018-03-23 15:54:39 -0700 | [diff] [blame] | 288 | static DEVICE_ATTR(min_tx_pkt, 0644, cdc_ncm_show_min_tx_pkt, cdc_ncm_store_min_tx_pkt); |
| 289 | static DEVICE_ATTR(rx_max, 0644, cdc_ncm_show_rx_max, cdc_ncm_store_rx_max); |
| 290 | static DEVICE_ATTR(tx_max, 0644, cdc_ncm_show_tx_max, cdc_ncm_store_tx_max); |
| 291 | static DEVICE_ATTR(tx_timer_usecs, 0644, cdc_ncm_show_tx_timer_usecs, cdc_ncm_store_tx_timer_usecs); |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 292 | |
Bjørn Mork | 404814a | 2015-12-06 22:47:15 +0100 | [diff] [blame] | 293 | static ssize_t ndp_to_end_show(struct device *d, struct device_attribute *attr, char *buf) |
| 294 | { |
| 295 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 296 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 297 | |
| 298 | return sprintf(buf, "%c\n", ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END ? 'Y' : 'N'); |
| 299 | } |
| 300 | |
| 301 | static ssize_t ndp_to_end_store(struct device *d, struct device_attribute *attr, const char *buf, size_t len) |
| 302 | { |
| 303 | struct usbnet *dev = netdev_priv(to_net_dev(d)); |
| 304 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 305 | bool enable; |
| 306 | |
| 307 | if (strtobool(buf, &enable)) |
| 308 | return -EINVAL; |
| 309 | |
| 310 | /* no change? */ |
| 311 | if (enable == (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END)) |
| 312 | return len; |
| 313 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 314 | if (enable) { |
| 315 | if (ctx->is_ndp16 && !ctx->delayed_ndp16) { |
| 316 | ctx->delayed_ndp16 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); |
| 317 | if (!ctx->delayed_ndp16) |
| 318 | return -ENOMEM; |
| 319 | } |
| 320 | if (!ctx->is_ndp16 && !ctx->delayed_ndp32) { |
| 321 | ctx->delayed_ndp32 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); |
| 322 | if (!ctx->delayed_ndp32) |
| 323 | return -ENOMEM; |
| 324 | } |
Bjørn Mork | 404814a | 2015-12-06 22:47:15 +0100 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | /* flush pending data before changing flag */ |
| 328 | netif_tx_lock_bh(dev->net); |
| 329 | usbnet_start_xmit(NULL, dev->net); |
| 330 | spin_lock_bh(&ctx->mtx); |
| 331 | if (enable) |
| 332 | ctx->drvflags |= CDC_NCM_FLAG_NDP_TO_END; |
| 333 | else |
| 334 | ctx->drvflags &= ~CDC_NCM_FLAG_NDP_TO_END; |
| 335 | spin_unlock_bh(&ctx->mtx); |
| 336 | netif_tx_unlock_bh(dev->net); |
| 337 | |
| 338 | return len; |
| 339 | } |
| 340 | static DEVICE_ATTR_RW(ndp_to_end); |
| 341 | |
Bjørn Mork | 871578c | 2014-05-30 09:31:08 +0200 | [diff] [blame] | 342 | #define NCM_PARM_ATTR(name, format, tocpu) \ |
| 343 | static ssize_t cdc_ncm_show_##name(struct device *d, struct device_attribute *attr, char *buf) \ |
| 344 | { \ |
| 345 | struct usbnet *dev = netdev_priv(to_net_dev(d)); \ |
| 346 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; \ |
| 347 | return sprintf(buf, format "\n", tocpu(ctx->ncm_parm.name)); \ |
| 348 | } \ |
Joe Perches | d61e403 | 2018-03-23 15:54:39 -0700 | [diff] [blame] | 349 | static DEVICE_ATTR(name, 0444, cdc_ncm_show_##name, NULL) |
Bjørn Mork | 871578c | 2014-05-30 09:31:08 +0200 | [diff] [blame] | 350 | |
| 351 | NCM_PARM_ATTR(bmNtbFormatsSupported, "0x%04x", le16_to_cpu); |
| 352 | NCM_PARM_ATTR(dwNtbInMaxSize, "%u", le32_to_cpu); |
| 353 | NCM_PARM_ATTR(wNdpInDivisor, "%u", le16_to_cpu); |
| 354 | NCM_PARM_ATTR(wNdpInPayloadRemainder, "%u", le16_to_cpu); |
| 355 | NCM_PARM_ATTR(wNdpInAlignment, "%u", le16_to_cpu); |
| 356 | NCM_PARM_ATTR(dwNtbOutMaxSize, "%u", le32_to_cpu); |
| 357 | NCM_PARM_ATTR(wNdpOutDivisor, "%u", le16_to_cpu); |
| 358 | NCM_PARM_ATTR(wNdpOutPayloadRemainder, "%u", le16_to_cpu); |
| 359 | NCM_PARM_ATTR(wNdpOutAlignment, "%u", le16_to_cpu); |
| 360 | NCM_PARM_ATTR(wNtbOutMaxDatagrams, "%u", le16_to_cpu); |
| 361 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 362 | static struct attribute *cdc_ncm_sysfs_attrs[] = { |
Bjørn Mork | 39eb7e0 | 2014-05-30 09:31:09 +0200 | [diff] [blame] | 363 | &dev_attr_min_tx_pkt.attr, |
Bjørn Mork | 404814a | 2015-12-06 22:47:15 +0100 | [diff] [blame] | 364 | &dev_attr_ndp_to_end.attr, |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 365 | &dev_attr_rx_max.attr, |
| 366 | &dev_attr_tx_max.attr, |
| 367 | &dev_attr_tx_timer_usecs.attr, |
Bjørn Mork | 871578c | 2014-05-30 09:31:08 +0200 | [diff] [blame] | 368 | &dev_attr_bmNtbFormatsSupported.attr, |
| 369 | &dev_attr_dwNtbInMaxSize.attr, |
| 370 | &dev_attr_wNdpInDivisor.attr, |
| 371 | &dev_attr_wNdpInPayloadRemainder.attr, |
| 372 | &dev_attr_wNdpInAlignment.attr, |
| 373 | &dev_attr_dwNtbOutMaxSize.attr, |
| 374 | &dev_attr_wNdpOutDivisor.attr, |
| 375 | &dev_attr_wNdpOutPayloadRemainder.attr, |
| 376 | &dev_attr_wNdpOutAlignment.attr, |
| 377 | &dev_attr_wNtbOutMaxDatagrams.attr, |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 378 | NULL, |
| 379 | }; |
| 380 | |
Arvind Yadav | 43f51ef | 2017-07-18 15:13:45 +0530 | [diff] [blame] | 381 | static const struct attribute_group cdc_ncm_sysfs_attr_group = { |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 382 | .name = "cdc_ncm", |
| 383 | .attrs = cdc_ncm_sysfs_attrs, |
| 384 | }; |
| 385 | |
| 386 | /* handle rx_max and tx_max changes */ |
| 387 | static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx) |
| 388 | { |
| 389 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 390 | u8 iface_no = ctx->control->cur_altsetting->desc.bInterfaceNumber; |
| 391 | u32 val; |
| 392 | |
| 393 | val = cdc_ncm_check_rx_max(dev, new_rx); |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 394 | |
| 395 | /* inform device about NTB input size changes */ |
| 396 | if (val != ctx->rx_max) { |
| 397 | __le32 dwNtbInMaxSize = cpu_to_le32(val); |
| 398 | |
| 399 | dev_info(&dev->intf->dev, "setting rx_max = %u\n", val); |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 400 | |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 401 | /* tell device to use new size */ |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 402 | if (usbnet_write_cmd(dev, USB_CDC_SET_NTB_INPUT_SIZE, |
| 403 | USB_TYPE_CLASS | USB_DIR_OUT |
| 404 | | USB_RECIP_INTERFACE, |
| 405 | 0, iface_no, &dwNtbInMaxSize, 4) < 0) |
| 406 | dev_dbg(&dev->intf->dev, "Setting NTB Input Size failed\n"); |
| 407 | else |
| 408 | ctx->rx_max = val; |
| 409 | } |
| 410 | |
Bjørn Mork | f42763d | 2014-05-30 09:31:05 +0200 | [diff] [blame] | 411 | /* usbnet use these values for sizing rx queues */ |
| 412 | if (dev->rx_urb_size != ctx->rx_max) { |
| 413 | dev->rx_urb_size = ctx->rx_max; |
| 414 | if (netif_running(dev->net)) |
| 415 | usbnet_unlink_rx_urbs(dev); |
| 416 | } |
| 417 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 418 | val = cdc_ncm_check_tx_max(dev, new_tx); |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 419 | if (val != ctx->tx_max) |
| 420 | dev_info(&dev->intf->dev, "setting tx_max = %u\n", val); |
Bjørn Mork | 08c74fc | 2014-05-16 21:48:20 +0200 | [diff] [blame] | 421 | |
| 422 | /* Adding a pad byte here if necessary simplifies the handling |
| 423 | * in cdc_ncm_fill_tx_frame, making tx_max always represent |
| 424 | * the real skb max size. |
| 425 | * |
| 426 | * We cannot use dev->maxpacket here because this is called from |
| 427 | * .bind which is called before usbnet sets up dev->maxpacket |
| 428 | */ |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 429 | if (val != le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) && |
| 430 | val % usb_maxpacket(dev->udev, dev->out, 1) == 0) |
| 431 | val++; |
Bjørn Mork | 08c74fc | 2014-05-16 21:48:20 +0200 | [diff] [blame] | 432 | |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 433 | /* we might need to flush any pending tx buffers if running */ |
| 434 | if (netif_running(dev->net) && val > ctx->tx_max) { |
| 435 | netif_tx_lock_bh(dev->net); |
| 436 | usbnet_start_xmit(NULL, dev->net); |
Bjørn Mork | 1ba5d0f | 2014-05-30 09:31:04 +0200 | [diff] [blame] | 437 | /* make sure tx_curr_skb is reallocated if it was empty */ |
| 438 | if (ctx->tx_curr_skb) { |
| 439 | dev_kfree_skb_any(ctx->tx_curr_skb); |
| 440 | ctx->tx_curr_skb = NULL; |
| 441 | } |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 442 | ctx->tx_max = val; |
| 443 | netif_tx_unlock_bh(dev->net); |
| 444 | } else { |
| 445 | ctx->tx_max = val; |
| 446 | } |
| 447 | |
Bjørn Mork | 08c74fc | 2014-05-16 21:48:20 +0200 | [diff] [blame] | 448 | dev->hard_mtu = ctx->tx_max; |
Bjørn Mork | 68864ab | 2014-05-16 21:48:21 +0200 | [diff] [blame] | 449 | |
| 450 | /* max qlen depend on hard_mtu and rx_urb_size */ |
| 451 | usbnet_update_max_qlen(dev); |
Bjørn Mork | 43e4c6d | 2014-05-16 21:48:24 +0200 | [diff] [blame] | 452 | |
| 453 | /* never pad more than 3 full USB packets per transfer */ |
| 454 | ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out, 1), |
| 455 | CDC_NCM_MIN_TX_PKT, ctx->tx_max); |
Bjørn Mork | 5aa73d5 | 2014-05-16 21:48:18 +0200 | [diff] [blame] | 456 | } |
| 457 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 458 | /* helpers for NCM and MBIM differences */ |
| 459 | static u8 cdc_ncm_flags(struct usbnet *dev) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 460 | { |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 461 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 462 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 463 | if (cdc_ncm_comm_intf_is_mbim(dev->intf->cur_altsetting) && ctx->mbim_desc) |
| 464 | return ctx->mbim_desc->bmNetworkCapabilities; |
| 465 | if (ctx->func_desc) |
| 466 | return ctx->func_desc->bmNetworkCapabilities; |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static int cdc_ncm_eth_hlen(struct usbnet *dev) |
| 471 | { |
| 472 | if (cdc_ncm_comm_intf_is_mbim(dev->intf->cur_altsetting)) |
| 473 | return 0; |
| 474 | return ETH_HLEN; |
| 475 | } |
| 476 | |
| 477 | static u32 cdc_ncm_min_dgram_size(struct usbnet *dev) |
| 478 | { |
| 479 | if (cdc_ncm_comm_intf_is_mbim(dev->intf->cur_altsetting)) |
| 480 | return CDC_MBIM_MIN_DATAGRAM_SIZE; |
| 481 | return CDC_NCM_MIN_DATAGRAM_SIZE; |
| 482 | } |
| 483 | |
| 484 | static u32 cdc_ncm_max_dgram_size(struct usbnet *dev) |
| 485 | { |
| 486 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 487 | |
| 488 | if (cdc_ncm_comm_intf_is_mbim(dev->intf->cur_altsetting) && ctx->mbim_desc) |
| 489 | return le16_to_cpu(ctx->mbim_desc->wMaxSegmentSize); |
| 490 | if (ctx->ether_desc) |
| 491 | return le16_to_cpu(ctx->ether_desc->wMaxSegmentSize); |
| 492 | return CDC_NCM_MAX_DATAGRAM_SIZE; |
| 493 | } |
| 494 | |
| 495 | /* initial one-time device setup. MUST be called with the data interface |
| 496 | * in altsetting 0 |
| 497 | */ |
| 498 | static int cdc_ncm_init(struct usbnet *dev) |
| 499 | { |
| 500 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 501 | u8 iface_no = ctx->control->cur_altsetting->desc.bInterfaceNumber; |
| 502 | int err; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 503 | |
Ming Lei | 90b8b03 | 2012-10-24 19:46:56 +0000 | [diff] [blame] | 504 | err = usbnet_read_cmd(dev, USB_CDC_GET_NTB_PARAMETERS, |
| 505 | USB_TYPE_CLASS | USB_DIR_IN |
| 506 | |USB_RECIP_INTERFACE, |
Bjørn Mork | ff0992e | 2014-03-17 16:25:18 +0100 | [diff] [blame] | 507 | 0, iface_no, &ctx->ncm_parm, |
| 508 | sizeof(ctx->ncm_parm)); |
Giuseppe Scrivano | 36c3541 | 2011-08-03 22:10:29 +0000 | [diff] [blame] | 509 | if (err < 0) { |
Bjørn Mork | 59ede31 | 2013-11-01 11:16:59 +0100 | [diff] [blame] | 510 | dev_err(&dev->intf->dev, "failed GET_NTB_PARAMETERS\n"); |
| 511 | return err; /* GET_NTB_PARAMETERS is required */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 512 | } |
| 513 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 514 | /* set CRC Mode */ |
| 515 | if (cdc_ncm_flags(dev) & USB_CDC_NCM_NCAP_CRC_MODE) { |
| 516 | dev_dbg(&dev->intf->dev, "Setting CRC mode off\n"); |
| 517 | err = usbnet_write_cmd(dev, USB_CDC_SET_CRC_MODE, |
| 518 | USB_TYPE_CLASS | USB_DIR_OUT |
| 519 | | USB_RECIP_INTERFACE, |
| 520 | USB_CDC_NCM_CRC_NOT_APPENDED, |
| 521 | iface_no, NULL, 0); |
| 522 | if (err < 0) |
| 523 | dev_err(&dev->intf->dev, "SET_CRC_MODE failed\n"); |
| 524 | } |
| 525 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 526 | /* use ndp16 by default */ |
| 527 | ctx->is_ndp16 = 1; |
| 528 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 529 | /* set NTB format, if both formats are supported. |
| 530 | * |
| 531 | * "The host shall only send this command while the NCM Data |
| 532 | * Interface is in alternate setting 0." |
| 533 | */ |
Dan Carpenter | d22adbf | 2014-05-22 10:52:29 +0300 | [diff] [blame] | 534 | if (le16_to_cpu(ctx->ncm_parm.bmNtbFormatsSupported) & |
| 535 | USB_CDC_NCM_NTB32_SUPPORTED) { |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 536 | if (ctx->drvflags & CDC_NCM_FLAG_PREFER_NTB32) { |
| 537 | ctx->is_ndp16 = 0; |
| 538 | dev_dbg(&dev->intf->dev, "Setting NTB format to 32-bit\n"); |
| 539 | err = usbnet_write_cmd(dev, USB_CDC_SET_NTB_FORMAT, |
| 540 | USB_TYPE_CLASS | USB_DIR_OUT |
| 541 | | USB_RECIP_INTERFACE, |
| 542 | USB_CDC_NCM_NTB32_FORMAT, |
| 543 | iface_no, NULL, 0); |
| 544 | } else { |
| 545 | ctx->is_ndp16 = 1; |
| 546 | dev_dbg(&dev->intf->dev, "Setting NTB format to 16-bit\n"); |
| 547 | err = usbnet_write_cmd(dev, USB_CDC_SET_NTB_FORMAT, |
| 548 | USB_TYPE_CLASS | USB_DIR_OUT |
| 549 | | USB_RECIP_INTERFACE, |
| 550 | USB_CDC_NCM_NTB16_FORMAT, |
| 551 | iface_no, NULL, 0); |
| 552 | } |
| 553 | if (err < 0) { |
| 554 | ctx->is_ndp16 = 1; |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 555 | dev_err(&dev->intf->dev, "SET_NTB_FORMAT failed\n"); |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 556 | } |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 557 | } |
| 558 | |
| 559 | /* set initial device values */ |
Bjørn Mork | ff0992e | 2014-03-17 16:25:18 +0100 | [diff] [blame] | 560 | ctx->rx_max = le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize); |
| 561 | ctx->tx_max = le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize); |
| 562 | ctx->tx_remainder = le16_to_cpu(ctx->ncm_parm.wNdpOutPayloadRemainder); |
| 563 | ctx->tx_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutDivisor); |
| 564 | ctx->tx_ndp_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutAlignment); |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 565 | /* devices prior to NCM Errata shall set this field to zero */ |
Bjørn Mork | ff0992e | 2014-03-17 16:25:18 +0100 | [diff] [blame] | 566 | ctx->tx_max_datagrams = le16_to_cpu(ctx->ncm_parm.wNtbOutMaxDatagrams); |
Bjørn Mork | 47175e5 | 2013-11-01 11:16:58 +0100 | [diff] [blame] | 567 | |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 568 | dev_dbg(&dev->intf->dev, |
| 569 | "dwNtbInMaxSize=%u dwNtbOutMaxSize=%u wNdpOutPayloadRemainder=%u wNdpOutDivisor=%u wNdpOutAlignment=%u wNtbOutMaxDatagrams=%u flags=0x%x\n", |
| 570 | ctx->rx_max, ctx->tx_max, ctx->tx_remainder, ctx->tx_modulus, |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 571 | ctx->tx_ndp_modulus, ctx->tx_max_datagrams, cdc_ncm_flags(dev)); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 572 | |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 573 | /* max count of tx datagrams */ |
| 574 | if ((ctx->tx_max_datagrams == 0) || |
| 575 | (ctx->tx_max_datagrams > CDC_NCM_DPT_DATAGRAMS_MAX)) |
| 576 | ctx->tx_max_datagrams = CDC_NCM_DPT_DATAGRAMS_MAX; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 577 | |
Bjørn Mork | 70559b8 | 2014-05-16 21:48:23 +0200 | [diff] [blame] | 578 | /* set up maximum NDP size */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 579 | if (ctx->is_ndp16) |
| 580 | ctx->max_ndp_size = sizeof(struct usb_cdc_ncm_ndp16) + (ctx->tx_max_datagrams + 1) * sizeof(struct usb_cdc_ncm_dpe16); |
| 581 | else |
| 582 | ctx->max_ndp_size = sizeof(struct usb_cdc_ncm_ndp32) + (ctx->tx_max_datagrams + 1) * sizeof(struct usb_cdc_ncm_dpe32); |
Bjørn Mork | 70559b8 | 2014-05-16 21:48:23 +0200 | [diff] [blame] | 583 | |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 584 | /* initial coalescing timer interval */ |
| 585 | ctx->timer_interval = CDC_NCM_TIMER_INTERVAL_USEC * NSEC_PER_USEC; |
| 586 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 587 | return 0; |
| 588 | } |
| 589 | |
| 590 | /* set a new max datagram size */ |
| 591 | static void cdc_ncm_set_dgram_size(struct usbnet *dev, int new_size) |
| 592 | { |
| 593 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 594 | u8 iface_no = ctx->control->cur_altsetting->desc.bInterfaceNumber; |
| 595 | __le16 max_datagram_size; |
| 596 | u16 mbim_mtu; |
| 597 | int err; |
| 598 | |
| 599 | /* set default based on descriptors */ |
| 600 | ctx->max_datagram_size = clamp_t(u32, new_size, |
| 601 | cdc_ncm_min_dgram_size(dev), |
| 602 | CDC_NCM_MAX_DATAGRAM_SIZE); |
| 603 | |
| 604 | /* inform the device about the selected Max Datagram Size? */ |
| 605 | if (!(cdc_ncm_flags(dev) & USB_CDC_NCM_NCAP_MAX_DATAGRAM_SIZE)) |
| 606 | goto out; |
| 607 | |
| 608 | /* read current mtu value from device */ |
| 609 | err = usbnet_read_cmd(dev, USB_CDC_GET_MAX_DATAGRAM_SIZE, |
| 610 | USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE, |
Oliver Neukum | 332f989 | 2019-11-07 09:48:01 +0100 | [diff] [blame] | 611 | 0, iface_no, &max_datagram_size, sizeof(max_datagram_size)); |
Dan Carpenter | a56dcc6 | 2019-11-13 21:28:31 +0300 | [diff] [blame] | 612 | if (err != sizeof(max_datagram_size)) { |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 613 | dev_dbg(&dev->intf->dev, "GET_MAX_DATAGRAM_SIZE failed\n"); |
| 614 | goto out; |
| 615 | } |
| 616 | |
| 617 | if (le16_to_cpu(max_datagram_size) == ctx->max_datagram_size) |
| 618 | goto out; |
| 619 | |
| 620 | max_datagram_size = cpu_to_le16(ctx->max_datagram_size); |
| 621 | err = usbnet_write_cmd(dev, USB_CDC_SET_MAX_DATAGRAM_SIZE, |
| 622 | USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE, |
Oliver Neukum | 332f989 | 2019-11-07 09:48:01 +0100 | [diff] [blame] | 623 | 0, iface_no, &max_datagram_size, sizeof(max_datagram_size)); |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 624 | if (err < 0) |
| 625 | dev_dbg(&dev->intf->dev, "SET_MAX_DATAGRAM_SIZE failed\n"); |
| 626 | |
| 627 | out: |
| 628 | /* set MTU to max supported by the device if necessary */ |
| 629 | dev->net->mtu = min_t(int, dev->net->mtu, ctx->max_datagram_size - cdc_ncm_eth_hlen(dev)); |
| 630 | |
| 631 | /* do not exceed operater preferred MTU */ |
| 632 | if (ctx->mbim_extended_desc) { |
| 633 | mbim_mtu = le16_to_cpu(ctx->mbim_extended_desc->wMTU); |
| 634 | if (mbim_mtu != 0 && mbim_mtu < dev->net->mtu) |
| 635 | dev->net->mtu = mbim_mtu; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | static void cdc_ncm_fix_modulus(struct usbnet *dev) |
| 640 | { |
| 641 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 642 | u32 val; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 643 | |
| 644 | /* |
| 645 | * verify that the structure alignment is: |
| 646 | * - power of two |
| 647 | * - not greater than the maximum transmit length |
| 648 | * - not less than four bytes |
| 649 | */ |
| 650 | val = ctx->tx_ndp_modulus; |
| 651 | |
| 652 | if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) || |
| 653 | (val != ((-val) & val)) || (val >= ctx->tx_max)) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 654 | dev_dbg(&dev->intf->dev, "Using default alignment: 4 bytes\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 655 | ctx->tx_ndp_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE; |
| 656 | } |
| 657 | |
| 658 | /* |
| 659 | * verify that the payload alignment is: |
| 660 | * - power of two |
| 661 | * - not greater than the maximum transmit length |
| 662 | * - not less than four bytes |
| 663 | */ |
| 664 | val = ctx->tx_modulus; |
| 665 | |
| 666 | if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) || |
| 667 | (val != ((-val) & val)) || (val >= ctx->tx_max)) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 668 | dev_dbg(&dev->intf->dev, "Using default transmit modulus: 4 bytes\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 669 | ctx->tx_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE; |
| 670 | } |
| 671 | |
| 672 | /* verify the payload remainder */ |
| 673 | if (ctx->tx_remainder >= ctx->tx_modulus) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 674 | dev_dbg(&dev->intf->dev, "Using default transmit remainder: 0 bytes\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 675 | ctx->tx_remainder = 0; |
| 676 | } |
| 677 | |
| 678 | /* adjust TX-remainder according to NCM specification. */ |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 679 | ctx->tx_remainder = ((ctx->tx_remainder - cdc_ncm_eth_hlen(dev)) & |
Greg Suarez | 2d1c431 | 2012-10-22 10:56:30 +0000 | [diff] [blame] | 680 | (ctx->tx_modulus - 1)); |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 681 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 682 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 683 | static int cdc_ncm_setup(struct usbnet *dev) |
| 684 | { |
| 685 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Bjørn Mork | 50f1cb1 | 2014-05-16 21:48:26 +0200 | [diff] [blame] | 686 | u32 def_rx, def_tx; |
| 687 | |
| 688 | /* be conservative when selecting intial buffer size to |
| 689 | * increase the number of hosts this will work for |
| 690 | */ |
| 691 | def_rx = min_t(u32, CDC_NCM_NTB_DEF_SIZE_RX, |
| 692 | le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize)); |
| 693 | def_tx = min_t(u32, CDC_NCM_NTB_DEF_SIZE_TX, |
| 694 | le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize)); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 695 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 696 | /* clamp rx_max and tx_max and inform device */ |
Bjørn Mork | 50f1cb1 | 2014-05-16 21:48:26 +0200 | [diff] [blame] | 697 | cdc_ncm_update_rxtx_max(dev, def_rx, def_tx); |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 698 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 699 | /* sanitize the modulus and remainder values */ |
| 700 | cdc_ncm_fix_modulus(dev); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 701 | |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 702 | /* set max datagram size */ |
| 703 | cdc_ncm_set_dgram_size(dev, cdc_ncm_max_dgram_size(dev)); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 704 | return 0; |
| 705 | } |
| 706 | |
| 707 | static void |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 708 | cdc_ncm_find_endpoints(struct usbnet *dev, struct usb_interface *intf) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 709 | { |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 710 | struct usb_host_endpoint *e, *in = NULL, *out = NULL; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 711 | u8 ep; |
| 712 | |
| 713 | for (ep = 0; ep < intf->cur_altsetting->desc.bNumEndpoints; ep++) { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 714 | e = intf->cur_altsetting->endpoint + ep; |
Bjørn Mork | 3fe4b33 | 2019-09-18 14:01:46 +0200 | [diff] [blame] | 715 | |
| 716 | /* ignore endpoints which cannot transfer data */ |
| 717 | if (!usb_endpoint_maxp(&e->desc)) |
| 718 | continue; |
| 719 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 720 | switch (e->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
| 721 | case USB_ENDPOINT_XFER_INT: |
| 722 | if (usb_endpoint_dir_in(&e->desc)) { |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 723 | if (!dev->status) |
| 724 | dev->status = e; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 725 | } |
| 726 | break; |
| 727 | |
| 728 | case USB_ENDPOINT_XFER_BULK: |
| 729 | if (usb_endpoint_dir_in(&e->desc)) { |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 730 | if (!in) |
| 731 | in = e; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 732 | } else { |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 733 | if (!out) |
| 734 | out = e; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 735 | } |
| 736 | break; |
| 737 | |
| 738 | default: |
| 739 | break; |
| 740 | } |
| 741 | } |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 742 | if (in && !dev->in) |
| 743 | dev->in = usb_rcvbulkpipe(dev->udev, |
| 744 | in->desc.bEndpointAddress & |
| 745 | USB_ENDPOINT_NUMBER_MASK); |
| 746 | if (out && !dev->out) |
| 747 | dev->out = usb_sndbulkpipe(dev->udev, |
| 748 | out->desc.bEndpointAddress & |
| 749 | USB_ENDPOINT_NUMBER_MASK); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | static void cdc_ncm_free(struct cdc_ncm_ctx *ctx) |
| 753 | { |
| 754 | if (ctx == NULL) |
| 755 | return; |
| 756 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 757 | if (ctx->tx_rem_skb != NULL) { |
| 758 | dev_kfree_skb_any(ctx->tx_rem_skb); |
| 759 | ctx->tx_rem_skb = NULL; |
| 760 | } |
| 761 | |
| 762 | if (ctx->tx_curr_skb != NULL) { |
| 763 | dev_kfree_skb_any(ctx->tx_curr_skb); |
| 764 | ctx->tx_curr_skb = NULL; |
| 765 | } |
| 766 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 767 | if (ctx->is_ndp16) |
| 768 | kfree(ctx->delayed_ndp16); |
| 769 | else |
| 770 | kfree(ctx->delayed_ndp32); |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 771 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 772 | kfree(ctx); |
| 773 | } |
| 774 | |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 775 | /* we need to override the usbnet change_mtu ndo for two reasons: |
| 776 | * - respect the negotiated maximum datagram size |
| 777 | * - avoid unwanted changes to rx and tx buffers |
| 778 | */ |
| 779 | int cdc_ncm_change_mtu(struct net_device *net, int new_mtu) |
| 780 | { |
| 781 | struct usbnet *dev = netdev_priv(net); |
Rafal Redzimski | 05a5648 | 2016-05-19 11:56:09 +0200 | [diff] [blame] | 782 | |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 783 | net->mtu = new_mtu; |
Rafal Redzimski | 05a5648 | 2016-05-19 11:56:09 +0200 | [diff] [blame] | 784 | cdc_ncm_set_dgram_size(dev, new_mtu + cdc_ncm_eth_hlen(dev)); |
| 785 | |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 786 | return 0; |
| 787 | } |
| 788 | EXPORT_SYMBOL_GPL(cdc_ncm_change_mtu); |
| 789 | |
| 790 | static const struct net_device_ops cdc_ncm_netdev_ops = { |
| 791 | .ndo_open = usbnet_open, |
| 792 | .ndo_stop = usbnet_stop, |
| 793 | .ndo_start_xmit = usbnet_start_xmit, |
| 794 | .ndo_tx_timeout = usbnet_tx_timeout, |
Miguel Rodríguez Pérez | 37a2ebd | 2020-07-15 20:40:59 +0200 | [diff] [blame] | 795 | .ndo_set_rx_mode = usbnet_set_rx_mode, |
Greg Ungerer | c8b5d12 | 2017-04-03 15:50:03 +1000 | [diff] [blame] | 796 | .ndo_get_stats64 = usbnet_get_stats64, |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 797 | .ndo_change_mtu = cdc_ncm_change_mtu, |
| 798 | .ndo_set_mac_address = eth_mac_addr, |
| 799 | .ndo_validate_addr = eth_validate_addr, |
| 800 | }; |
| 801 | |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 802 | int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting, int drvflags) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 803 | { |
| 804 | struct cdc_ncm_ctx *ctx; |
| 805 | struct usb_driver *driver; |
| 806 | u8 *buf; |
| 807 | int len; |
| 808 | int temp; |
| 809 | u8 iface_no; |
Oliver Neukum | 77b0a09 | 2015-09-07 16:05:39 +0200 | [diff] [blame] | 810 | struct usb_cdc_parsed_header hdr; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 811 | |
Thomas Meyer | c796984 | 2011-11-17 12:43:40 +0000 | [diff] [blame] | 812 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
Devendra Naga | 8f0923c | 2013-03-29 23:03:22 +0000 | [diff] [blame] | 813 | if (!ctx) |
| 814 | return -ENOMEM; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 815 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 816 | hrtimer_init(&ctx->tx_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
| 817 | ctx->tx_timer.function = &cdc_ncm_tx_timer_cb; |
Ben Dooks | 8cc1da9 | 2018-10-11 14:03:32 +0100 | [diff] [blame] | 818 | tasklet_init(&ctx->bh, cdc_ncm_txpath_bh, (unsigned long)dev); |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 819 | atomic_set(&ctx->stop, 0); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 820 | spin_lock_init(&ctx->mtx); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 821 | |
| 822 | /* store ctx pointer in device data field */ |
| 823 | dev->data[0] = (unsigned long)ctx; |
| 824 | |
Bjørn Mork | 9fe0234 | 2013-11-01 11:16:48 +0100 | [diff] [blame] | 825 | /* only the control interface can be successfully probed */ |
| 826 | ctx->control = intf; |
| 827 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 828 | /* get some pointers */ |
| 829 | driver = driver_of(intf); |
| 830 | buf = intf->cur_altsetting->extra; |
| 831 | len = intf->cur_altsetting->extralen; |
| 832 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 833 | /* parse through descriptors associated with control interface */ |
Oliver Neukum | 77b0a09 | 2015-09-07 16:05:39 +0200 | [diff] [blame] | 834 | cdc_parse_cdc_header(&hdr, intf, buf, len); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 835 | |
Bjørn Mork | 6527f83 | 2015-11-23 14:32:10 +0100 | [diff] [blame] | 836 | if (hdr.usb_cdc_union_desc) |
| 837 | ctx->data = usb_ifnum_to_if(dev->udev, |
| 838 | hdr.usb_cdc_union_desc->bSlaveInterface0); |
Oliver Neukum | 77b0a09 | 2015-09-07 16:05:39 +0200 | [diff] [blame] | 839 | ctx->ether_desc = hdr.usb_cdc_ether_desc; |
| 840 | ctx->func_desc = hdr.usb_cdc_ncm_desc; |
| 841 | ctx->mbim_desc = hdr.usb_cdc_mbim_desc; |
| 842 | ctx->mbim_extended_desc = hdr.usb_cdc_mbim_extended_desc; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 843 | |
Bjørn Mork | 9992c2e | 2013-01-21 05:50:38 +0000 | [diff] [blame] | 844 | /* some buggy devices have an IAD but no CDC Union */ |
Bjørn Mork | 6527f83 | 2015-11-23 14:32:10 +0100 | [diff] [blame] | 845 | if (!hdr.usb_cdc_union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) { |
Bjørn Mork | 56a666d | 2013-01-25 23:36:59 +0000 | [diff] [blame] | 846 | ctx->data = usb_ifnum_to_if(dev->udev, intf->cur_altsetting->desc.bInterfaceNumber + 1); |
| 847 | dev_dbg(&intf->dev, "CDC Union missing - got slave from IAD\n"); |
Bjørn Mork | 9992c2e | 2013-01-21 05:50:38 +0000 | [diff] [blame] | 848 | } |
| 849 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 850 | /* check if we got everything */ |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 851 | if (!ctx->data) { |
| 852 | dev_dbg(&intf->dev, "CDC Union missing and no IAD found\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 853 | goto error; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 854 | } |
Bjørn Mork | f8afb73 | 2014-05-16 21:48:19 +0200 | [diff] [blame] | 855 | if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) { |
| 856 | if (!ctx->mbim_desc) { |
| 857 | dev_dbg(&intf->dev, "MBIM functional descriptor missing\n"); |
| 858 | goto error; |
| 859 | } |
| 860 | } else { |
| 861 | if (!ctx->ether_desc || !ctx->func_desc) { |
| 862 | dev_dbg(&intf->dev, "NCM or ECM functional descriptors missing\n"); |
| 863 | goto error; |
| 864 | } |
| 865 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 866 | |
Bjørn Mork | bbc8d92 | 2012-11-13 03:19:43 +0000 | [diff] [blame] | 867 | /* claim data interface, if different from control */ |
| 868 | if (ctx->data != ctx->control) { |
| 869 | temp = usb_driver_claim_interface(driver, ctx->data, dev); |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 870 | if (temp) { |
| 871 | dev_dbg(&intf->dev, "failed to claim data intf\n"); |
Bjørn Mork | bbc8d92 | 2012-11-13 03:19:43 +0000 | [diff] [blame] | 872 | goto error; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 873 | } |
Bjørn Mork | bbc8d92 | 2012-11-13 03:19:43 +0000 | [diff] [blame] | 874 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 875 | |
| 876 | iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber; |
| 877 | |
Daniele Palmas | 7b8076c | 2016-12-07 14:07:48 +0100 | [diff] [blame] | 878 | /* Device-specific flags */ |
| 879 | ctx->drvflags = drvflags; |
| 880 | |
Bjørn Mork | 48906f6 | 2016-03-03 22:20:53 +0100 | [diff] [blame] | 881 | /* Reset data interface. Some devices will not reset properly |
| 882 | * unless they are configured first. Toggle the altsetting to |
Daniele Palmas | 7b8076c | 2016-12-07 14:07:48 +0100 | [diff] [blame] | 883 | * force a reset. |
| 884 | * Some other devices do not work properly with this procedure |
| 885 | * that can be avoided using quirk CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE |
Bjørn Mork | 48906f6 | 2016-03-03 22:20:53 +0100 | [diff] [blame] | 886 | */ |
Daniele Palmas | 7b8076c | 2016-12-07 14:07:48 +0100 | [diff] [blame] | 887 | if (!(ctx->drvflags & CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE)) |
| 888 | usb_set_interface(dev->udev, iface_no, data_altsetting); |
| 889 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 890 | temp = usb_set_interface(dev->udev, iface_no, 0); |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 891 | if (temp) { |
| 892 | dev_dbg(&intf->dev, "set interface failed\n"); |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 893 | goto error2; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 894 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 895 | |
Bjørn Mork | 08c74fc | 2014-05-16 21:48:20 +0200 | [diff] [blame] | 896 | /* initialize basic device settings */ |
| 897 | if (cdc_ncm_init(dev)) |
Bjørn Mork | ff0992e | 2014-03-17 16:25:18 +0100 | [diff] [blame] | 898 | goto error2; |
| 899 | |
Bjørn Mork | c086e70 | 2016-07-03 22:24:50 +0200 | [diff] [blame] | 900 | /* Some firmwares need a pause here or they will silently fail |
| 901 | * to set up the interface properly. This value was decided |
| 902 | * empirically on a Sierra Wireless MC7455 running 02.08.02.00 |
| 903 | * firmware. |
| 904 | */ |
| 905 | usleep_range(10000, 20000); |
| 906 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 907 | /* configure data interface */ |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 908 | temp = usb_set_interface(dev->udev, iface_no, data_altsetting); |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 909 | if (temp) { |
| 910 | dev_dbg(&intf->dev, "set interface failed\n"); |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 911 | goto error2; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 912 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 913 | |
Bjørn Mork | ff1632a | 2013-11-01 11:16:41 +0100 | [diff] [blame] | 914 | cdc_ncm_find_endpoints(dev, ctx->data); |
| 915 | cdc_ncm_find_endpoints(dev, ctx->control); |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 916 | if (!dev->in || !dev->out || !dev->status) { |
| 917 | dev_dbg(&intf->dev, "failed to collect endpoints\n"); |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 918 | goto error2; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 919 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 920 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 921 | usb_set_intfdata(ctx->data, dev); |
| 922 | usb_set_intfdata(ctx->control, dev); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 923 | |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 924 | if (ctx->ether_desc) { |
| 925 | temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress); |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 926 | if (temp) { |
| 927 | dev_dbg(&intf->dev, "failed to get mac address\n"); |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 928 | goto error2; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 929 | } |
| 930 | dev_info(&intf->dev, "MAC-Address: %pM\n", dev->net->dev_addr); |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 931 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 932 | |
Bjørn Mork | 08c74fc | 2014-05-16 21:48:20 +0200 | [diff] [blame] | 933 | /* finish setting up the device specific data */ |
| 934 | cdc_ncm_setup(dev); |
Bjørn Mork | ff0992e | 2014-03-17 16:25:18 +0100 | [diff] [blame] | 935 | |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 936 | /* Allocate the delayed NDP if needed. */ |
| 937 | if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 938 | if (ctx->is_ndp16) { |
| 939 | ctx->delayed_ndp16 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); |
| 940 | if (!ctx->delayed_ndp16) |
| 941 | goto error2; |
| 942 | } else { |
| 943 | ctx->delayed_ndp32 = kzalloc(ctx->max_ndp_size, GFP_KERNEL); |
| 944 | if (!ctx->delayed_ndp32) |
| 945 | goto error2; |
| 946 | } |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 947 | dev_info(&intf->dev, "NDP will be placed at end of frame for this device."); |
| 948 | } |
| 949 | |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 950 | /* override ethtool_ops */ |
| 951 | dev->net->ethtool_ops = &cdc_ncm_ethtool_ops; |
| 952 | |
Bjørn Mork | 289507d | 2014-05-30 09:31:06 +0200 | [diff] [blame] | 953 | /* add our sysfs attrs */ |
| 954 | dev->net->sysfs_groups[0] = &cdc_ncm_sysfs_attr_group; |
| 955 | |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 956 | /* must handle MTU changes */ |
| 957 | dev->net->netdev_ops = &cdc_ncm_netdev_ops; |
Jarod Wilson | f77f0ae | 2016-10-20 13:55:17 -0400 | [diff] [blame] | 958 | dev->net->max_mtu = cdc_ncm_max_dgram_size(dev) - cdc_ncm_eth_hlen(dev); |
Bjørn Mork | 1dfddff5 | 2015-12-23 13:42:43 +0100 | [diff] [blame] | 959 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 960 | return 0; |
| 961 | |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 962 | error2: |
| 963 | usb_set_intfdata(ctx->control, NULL); |
| 964 | usb_set_intfdata(ctx->data, NULL); |
Bjørn Mork | 6b4ef60 | 2013-01-21 05:50:40 +0000 | [diff] [blame] | 965 | if (ctx->data != ctx->control) |
| 966 | usb_driver_release_interface(driver, ctx->data); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 967 | error: |
| 968 | cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]); |
| 969 | dev->data[0] = 0; |
Bjørn Mork | 296e81f | 2013-11-01 11:17:00 +0100 | [diff] [blame] | 970 | dev_info(&intf->dev, "bind() failure\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 971 | return -ENODEV; |
| 972 | } |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 973 | EXPORT_SYMBOL_GPL(cdc_ncm_bind_common); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 974 | |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 975 | void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 976 | { |
| 977 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 978 | struct usb_driver *driver = driver_of(intf); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 979 | |
| 980 | if (ctx == NULL) |
| 981 | return; /* no setup */ |
| 982 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 983 | atomic_set(&ctx->stop, 1); |
| 984 | |
Daniel Lezcano | 2aee167 | 2018-06-19 16:14:30 +0200 | [diff] [blame] | 985 | hrtimer_cancel(&ctx->tx_timer); |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 986 | |
| 987 | tasklet_kill(&ctx->bh); |
| 988 | |
Bjørn Mork | bbc8d92 | 2012-11-13 03:19:43 +0000 | [diff] [blame] | 989 | /* handle devices with combined control and data interface */ |
| 990 | if (ctx->control == ctx->data) |
| 991 | ctx->data = NULL; |
| 992 | |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 993 | /* disconnect master --> disconnect slave */ |
| 994 | if (intf == ctx->control && ctx->data) { |
| 995 | usb_set_intfdata(ctx->data, NULL); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 996 | usb_driver_release_interface(driver, ctx->data); |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 997 | ctx->data = NULL; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 998 | |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 999 | } else if (intf == ctx->data && ctx->control) { |
| 1000 | usb_set_intfdata(ctx->control, NULL); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1001 | usb_driver_release_interface(driver, ctx->control); |
Alexey Orishko | 19694ac | 2011-05-24 05:26:13 +0000 | [diff] [blame] | 1002 | ctx->control = NULL; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1003 | } |
| 1004 | |
Bjørn Mork | 3e51566 | 2013-11-01 11:16:40 +0100 | [diff] [blame] | 1005 | usb_set_intfdata(intf, NULL); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1006 | cdc_ncm_free(ctx); |
| 1007 | } |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1008 | EXPORT_SYMBOL_GPL(cdc_ncm_unbind); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1009 | |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1010 | /* Return the number of the MBIM control interface altsetting iff it |
| 1011 | * is preferred and available, |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1012 | */ |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1013 | u8 cdc_ncm_select_altsetting(struct usb_interface *intf) |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 1014 | { |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1015 | struct usb_host_interface *alt; |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 1016 | |
Bjørn Mork | bd329e1 | 2012-10-22 10:56:38 +0000 | [diff] [blame] | 1017 | /* The MBIM spec defines a NCM compatible default altsetting, |
| 1018 | * which we may have matched: |
| 1019 | * |
| 1020 | * "Functions that implement both NCM 1.0 and MBIM (an |
| 1021 | * “NCM/MBIM function”) according to this recommendation |
| 1022 | * shall provide two alternate settings for the |
| 1023 | * Communication Interface. Alternate setting 0, and the |
| 1024 | * associated class and endpoint descriptors, shall be |
| 1025 | * constructed according to the rules given for the |
| 1026 | * Communication Interface in section 5 of [USBNCM10]. |
| 1027 | * Alternate setting 1, and the associated class and |
| 1028 | * endpoint descriptors, shall be constructed according to |
| 1029 | * the rules given in section 6 (USB Device Model) of this |
| 1030 | * specification." |
Bjørn Mork | bd329e1 | 2012-10-22 10:56:38 +0000 | [diff] [blame] | 1031 | */ |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1032 | if (intf->num_altsetting < 2) |
| 1033 | return intf->cur_altsetting->desc.bAlternateSetting; |
| 1034 | |
| 1035 | if (prefer_mbim) { |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1036 | alt = usb_altnum_to_altsetting(intf, CDC_NCM_COMM_ALTSETTING_MBIM); |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1037 | if (alt && cdc_ncm_comm_intf_is_mbim(alt)) |
| 1038 | return CDC_NCM_COMM_ALTSETTING_MBIM; |
Bjørn Mork | f350ca0 | 2013-02-13 12:09:52 +0000 | [diff] [blame] | 1039 | } |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1040 | return CDC_NCM_COMM_ALTSETTING_NCM; |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1041 | } |
| 1042 | EXPORT_SYMBOL_GPL(cdc_ncm_select_altsetting); |
| 1043 | |
| 1044 | static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) |
| 1045 | { |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1046 | /* MBIM backwards compatible function? */ |
Bjørn Mork | 50a0ffaf | 2014-05-11 10:47:15 +0200 | [diff] [blame] | 1047 | if (cdc_ncm_select_altsetting(intf) != CDC_NCM_COMM_ALTSETTING_NCM) |
Bjørn Mork | 1e8bbe6 | 2013-03-14 01:05:13 +0000 | [diff] [blame] | 1048 | return -ENODEV; |
Bjørn Mork | bd329e1 | 2012-10-22 10:56:38 +0000 | [diff] [blame] | 1049 | |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1050 | /* The NCM data altsetting is fixed, so we hard-coded it. |
| 1051 | * Additionally, generic NCM devices are assumed to accept arbitrarily |
| 1052 | * placed NDP. |
| 1053 | */ |
Bjørn Mork | 4d06dd5 | 2016-03-07 21:15:36 +0100 | [diff] [blame] | 1054 | return cdc_ncm_bind_common(dev, intf, CDC_NCM_DATA_ALTSETTING_NCM, 0); |
Greg Suarez | 38396e4 | 2012-10-22 10:56:31 +0000 | [diff] [blame] | 1055 | } |
| 1056 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1057 | static void cdc_ncm_align_tail(struct sk_buff *skb, size_t modulus, size_t remainder, size_t max) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1058 | { |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1059 | size_t align = ALIGN(skb->len, modulus) - skb->len + remainder; |
| 1060 | |
| 1061 | if (skb->len + align > max) |
| 1062 | align = max - skb->len; |
| 1063 | if (align && skb_tailroom(skb) >= align) |
Johannes Berg | b080db5 | 2017-06-16 14:29:19 +0200 | [diff] [blame] | 1064 | skb_put_zero(skb, align); |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | /* return a pointer to a valid struct usb_cdc_ncm_ndp16 of type sign, possibly |
| 1068 | * allocating a new one within skb |
| 1069 | */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1070 | static struct usb_cdc_ncm_ndp16 *cdc_ncm_ndp16(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign, size_t reserve) |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1071 | { |
| 1072 | struct usb_cdc_ncm_ndp16 *ndp16 = NULL; |
| 1073 | struct usb_cdc_ncm_nth16 *nth16 = (void *)skb->data; |
| 1074 | size_t ndpoffset = le16_to_cpu(nth16->wNdpIndex); |
| 1075 | |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1076 | /* If NDP should be moved to the end of the NCM package, we can't follow the |
| 1077 | * NTH16 header as we would normally do. NDP isn't written to the SKB yet, and |
| 1078 | * the wNdpIndex field in the header is actually not consistent with reality. It will be later. |
| 1079 | */ |
Bjørn Mork | f8c0cfa | 2015-12-05 13:01:50 +0100 | [diff] [blame] | 1080 | if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1081 | if (ctx->delayed_ndp16->dwSignature == sign) |
| 1082 | return ctx->delayed_ndp16; |
| 1083 | |
Bjørn Mork | f8c0cfa | 2015-12-05 13:01:50 +0100 | [diff] [blame] | 1084 | /* We can only push a single NDP to the end. Return |
| 1085 | * NULL to send what we've already got and queue this |
| 1086 | * skb for later. |
| 1087 | */ |
| 1088 | else if (ctx->delayed_ndp16->dwSignature) |
| 1089 | return NULL; |
| 1090 | } |
| 1091 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1092 | /* follow the chain of NDPs, looking for a match */ |
| 1093 | while (ndpoffset) { |
| 1094 | ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb->data + ndpoffset); |
| 1095 | if (ndp16->dwSignature == sign) |
| 1096 | return ndp16; |
| 1097 | ndpoffset = le16_to_cpu(ndp16->wNextNdpIndex); |
| 1098 | } |
| 1099 | |
| 1100 | /* align new NDP */ |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1101 | if (!(ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END)) |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1102 | cdc_ncm_align_tail(skb, ctx->tx_ndp_modulus, 0, ctx->tx_curr_size); |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1103 | |
| 1104 | /* verify that there is room for the NDP and the datagram (reserve) */ |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1105 | if ((ctx->tx_curr_size - skb->len - reserve) < ctx->max_ndp_size) |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1106 | return NULL; |
| 1107 | |
| 1108 | /* link to it */ |
| 1109 | if (ndp16) |
| 1110 | ndp16->wNextNdpIndex = cpu_to_le16(skb->len); |
| 1111 | else |
| 1112 | nth16->wNdpIndex = cpu_to_le16(skb->len); |
| 1113 | |
| 1114 | /* push a new empty NDP */ |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1115 | if (!(ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END)) |
yuan linyu | ad941e6 | 2017-06-18 22:49:30 +0800 | [diff] [blame] | 1116 | ndp16 = skb_put_zero(skb, ctx->max_ndp_size); |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1117 | else |
| 1118 | ndp16 = ctx->delayed_ndp16; |
| 1119 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1120 | ndp16->dwSignature = sign; |
| 1121 | ndp16->wLength = cpu_to_le16(sizeof(struct usb_cdc_ncm_ndp16) + sizeof(struct usb_cdc_ncm_dpe16)); |
| 1122 | return ndp16; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1125 | static struct usb_cdc_ncm_ndp32 *cdc_ncm_ndp32(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign, size_t reserve) |
| 1126 | { |
| 1127 | struct usb_cdc_ncm_ndp32 *ndp32 = NULL; |
| 1128 | struct usb_cdc_ncm_nth32 *nth32 = (void *)skb->data; |
| 1129 | size_t ndpoffset = le32_to_cpu(nth32->dwNdpIndex); |
| 1130 | |
| 1131 | /* If NDP should be moved to the end of the NCM package, we can't follow the |
| 1132 | * NTH32 header as we would normally do. NDP isn't written to the SKB yet, and |
| 1133 | * the wNdpIndex field in the header is actually not consistent with reality. It will be later. |
| 1134 | */ |
| 1135 | if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { |
| 1136 | if (ctx->delayed_ndp32->dwSignature == sign) |
| 1137 | return ctx->delayed_ndp32; |
| 1138 | |
| 1139 | /* We can only push a single NDP to the end. Return |
| 1140 | * NULL to send what we've already got and queue this |
| 1141 | * skb for later. |
| 1142 | */ |
| 1143 | else if (ctx->delayed_ndp32->dwSignature) |
| 1144 | return NULL; |
| 1145 | } |
| 1146 | |
| 1147 | /* follow the chain of NDPs, looking for a match */ |
| 1148 | while (ndpoffset) { |
| 1149 | ndp32 = (struct usb_cdc_ncm_ndp32 *)(skb->data + ndpoffset); |
| 1150 | if (ndp32->dwSignature == sign) |
| 1151 | return ndp32; |
| 1152 | ndpoffset = le32_to_cpu(ndp32->dwNextNdpIndex); |
| 1153 | } |
| 1154 | |
| 1155 | /* align new NDP */ |
| 1156 | if (!(ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END)) |
| 1157 | cdc_ncm_align_tail(skb, ctx->tx_ndp_modulus, 0, ctx->tx_curr_size); |
| 1158 | |
| 1159 | /* verify that there is room for the NDP and the datagram (reserve) */ |
| 1160 | if ((ctx->tx_curr_size - skb->len - reserve) < ctx->max_ndp_size) |
| 1161 | return NULL; |
| 1162 | |
| 1163 | /* link to it */ |
| 1164 | if (ndp32) |
| 1165 | ndp32->dwNextNdpIndex = cpu_to_le32(skb->len); |
| 1166 | else |
| 1167 | nth32->dwNdpIndex = cpu_to_le32(skb->len); |
| 1168 | |
| 1169 | /* push a new empty NDP */ |
| 1170 | if (!(ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END)) |
| 1171 | ndp32 = skb_put_zero(skb, ctx->max_ndp_size); |
| 1172 | else |
| 1173 | ndp32 = ctx->delayed_ndp32; |
| 1174 | |
| 1175 | ndp32->dwSignature = sign; |
Alexander Bersenev | 5d0ab06 | 2020-03-14 10:33:24 +0500 | [diff] [blame] | 1176 | ndp32->wLength = cpu_to_le16(sizeof(struct usb_cdc_ncm_ndp32) + sizeof(struct usb_cdc_ncm_dpe32)); |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1177 | return ndp32; |
| 1178 | } |
| 1179 | |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1180 | struct sk_buff * |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1181 | cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1182 | { |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1183 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1184 | union { |
| 1185 | struct usb_cdc_ncm_nth16 *nth16; |
| 1186 | struct usb_cdc_ncm_nth32 *nth32; |
| 1187 | } nth; |
| 1188 | union { |
| 1189 | struct usb_cdc_ncm_ndp16 *ndp16; |
| 1190 | struct usb_cdc_ncm_ndp32 *ndp32; |
| 1191 | } ndp; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1192 | struct sk_buff *skb_out; |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1193 | u16 n = 0, index, ndplen; |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1194 | u8 ready2send = 0; |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1195 | u32 delayed_ndp_size; |
Jim Baxter | aeca3a7 | 2017-05-08 13:49:57 +0100 | [diff] [blame] | 1196 | size_t padding_count; |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1197 | |
| 1198 | /* When our NDP gets written in cdc_ncm_ndp(), then skb_out->len gets updated |
| 1199 | * accordingly. Otherwise, we should check here. |
| 1200 | */ |
| 1201 | if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) |
Bjørn Mork | 49c2c3f | 2018-06-08 09:15:24 +0200 | [diff] [blame] | 1202 | delayed_ndp_size = ALIGN(ctx->max_ndp_size, ctx->tx_ndp_modulus); |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1203 | else |
| 1204 | delayed_ndp_size = 0; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1205 | |
| 1206 | /* if there is a remaining skb, it gets priority */ |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1207 | if (skb != NULL) { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1208 | swap(skb, ctx->tx_rem_skb); |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1209 | swap(sign, ctx->tx_rem_sign); |
| 1210 | } else { |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1211 | ready2send = 1; |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1212 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1213 | |
| 1214 | /* check if we are resuming an OUT skb */ |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1215 | skb_out = ctx->tx_curr_skb; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1216 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1217 | /* allocate a new OUT skb */ |
| 1218 | if (!skb_out) { |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1219 | if (ctx->tx_low_mem_val == 0) { |
| 1220 | ctx->tx_curr_size = ctx->tx_max; |
| 1221 | skb_out = alloc_skb(ctx->tx_curr_size, GFP_ATOMIC); |
| 1222 | /* If the memory allocation fails we will wait longer |
| 1223 | * each time before attempting another full size |
| 1224 | * allocation again to not overload the system |
| 1225 | * further. |
| 1226 | */ |
| 1227 | if (skb_out == NULL) { |
| 1228 | ctx->tx_low_mem_max_cnt = min(ctx->tx_low_mem_max_cnt + 1, |
| 1229 | (unsigned)CDC_NCM_LOW_MEM_MAX_CNT); |
| 1230 | ctx->tx_low_mem_val = ctx->tx_low_mem_max_cnt; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1231 | } |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1232 | } |
| 1233 | if (skb_out == NULL) { |
| 1234 | /* See if a very small allocation is possible. |
| 1235 | * We will send this packet immediately and hope |
| 1236 | * that there is more memory available later. |
| 1237 | */ |
| 1238 | if (skb) |
| 1239 | ctx->tx_curr_size = max(skb->len, |
| 1240 | (u32)USB_CDC_NCM_NTB_MIN_OUT_SIZE); |
| 1241 | else |
| 1242 | ctx->tx_curr_size = USB_CDC_NCM_NTB_MIN_OUT_SIZE; |
| 1243 | skb_out = alloc_skb(ctx->tx_curr_size, GFP_ATOMIC); |
| 1244 | |
| 1245 | /* No allocation possible so we will abort */ |
| 1246 | if (skb_out == NULL) { |
| 1247 | if (skb != NULL) { |
| 1248 | dev_kfree_skb_any(skb); |
| 1249 | dev->net->stats.tx_dropped++; |
| 1250 | } |
| 1251 | goto exit_no_skb; |
| 1252 | } |
| 1253 | ctx->tx_low_mem_val--; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1254 | } |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1255 | if (ctx->is_ndp16) { |
| 1256 | /* fill out the initial 16-bit NTB header */ |
| 1257 | nth.nth16 = skb_put_zero(skb_out, sizeof(struct usb_cdc_ncm_nth16)); |
| 1258 | nth.nth16->dwSignature = cpu_to_le32(USB_CDC_NCM_NTH16_SIGN); |
| 1259 | nth.nth16->wHeaderLength = cpu_to_le16(sizeof(struct usb_cdc_ncm_nth16)); |
| 1260 | nth.nth16->wSequence = cpu_to_le16(ctx->tx_seq++); |
| 1261 | } else { |
| 1262 | /* fill out the initial 32-bit NTB header */ |
| 1263 | nth.nth32 = skb_put_zero(skb_out, sizeof(struct usb_cdc_ncm_nth32)); |
| 1264 | nth.nth32->dwSignature = cpu_to_le32(USB_CDC_NCM_NTH32_SIGN); |
| 1265 | nth.nth32->wHeaderLength = cpu_to_le16(sizeof(struct usb_cdc_ncm_nth32)); |
| 1266 | nth.nth32->wSequence = cpu_to_le16(ctx->tx_seq++); |
| 1267 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1268 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1269 | /* count total number of frames in this NTB */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1270 | ctx->tx_curr_frame_num = 0; |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1271 | |
| 1272 | /* recent payload counter for this skb_out */ |
| 1273 | ctx->tx_curr_frame_payload = 0; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1274 | } |
| 1275 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1276 | for (n = ctx->tx_curr_frame_num; n < ctx->tx_max_datagrams; n++) { |
| 1277 | /* send any remaining skb first */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1278 | if (skb == NULL) { |
| 1279 | skb = ctx->tx_rem_skb; |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1280 | sign = ctx->tx_rem_sign; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1281 | ctx->tx_rem_skb = NULL; |
| 1282 | |
| 1283 | /* check for end of skb */ |
| 1284 | if (skb == NULL) |
| 1285 | break; |
| 1286 | } |
| 1287 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1288 | /* get the appropriate NDP for this skb */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1289 | if (ctx->is_ndp16) |
| 1290 | ndp.ndp16 = cdc_ncm_ndp16(ctx, skb_out, sign, skb->len + ctx->tx_modulus + ctx->tx_remainder); |
| 1291 | else |
| 1292 | ndp.ndp32 = cdc_ncm_ndp32(ctx, skb_out, sign, skb->len + ctx->tx_modulus + ctx->tx_remainder); |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1293 | |
| 1294 | /* align beginning of next frame */ |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1295 | cdc_ncm_align_tail(skb_out, ctx->tx_modulus, ctx->tx_remainder, ctx->tx_curr_size); |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1296 | |
| 1297 | /* check if we had enough room left for both NDP and frame */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1298 | if ((ctx->is_ndp16 && !ndp.ndp16) || (!ctx->is_ndp16 && !ndp.ndp32) || |
| 1299 | skb_out->len + skb->len + delayed_ndp_size > ctx->tx_curr_size) { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1300 | if (n == 0) { |
| 1301 | /* won't fit, MTU problem? */ |
| 1302 | dev_kfree_skb_any(skb); |
| 1303 | skb = NULL; |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1304 | dev->net->stats.tx_dropped++; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1305 | } else { |
| 1306 | /* no room for skb - store for later */ |
| 1307 | if (ctx->tx_rem_skb != NULL) { |
| 1308 | dev_kfree_skb_any(ctx->tx_rem_skb); |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1309 | dev->net->stats.tx_dropped++; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1310 | } |
| 1311 | ctx->tx_rem_skb = skb; |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1312 | ctx->tx_rem_sign = sign; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1313 | skb = NULL; |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1314 | ready2send = 1; |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1315 | ctx->tx_reason_ntb_full++; /* count reason for transmitting */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1316 | } |
| 1317 | break; |
| 1318 | } |
| 1319 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1320 | /* calculate frame number withing this NDP */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1321 | if (ctx->is_ndp16) { |
| 1322 | ndplen = le16_to_cpu(ndp.ndp16->wLength); |
| 1323 | index = (ndplen - sizeof(struct usb_cdc_ncm_ndp16)) / sizeof(struct usb_cdc_ncm_dpe16) - 1; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1324 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1325 | /* OK, add this skb */ |
| 1326 | ndp.ndp16->dpe16[index].wDatagramLength = cpu_to_le16(skb->len); |
| 1327 | ndp.ndp16->dpe16[index].wDatagramIndex = cpu_to_le16(skb_out->len); |
| 1328 | ndp.ndp16->wLength = cpu_to_le16(ndplen + sizeof(struct usb_cdc_ncm_dpe16)); |
| 1329 | } else { |
| 1330 | ndplen = le16_to_cpu(ndp.ndp32->wLength); |
| 1331 | index = (ndplen - sizeof(struct usb_cdc_ncm_ndp32)) / sizeof(struct usb_cdc_ncm_dpe32) - 1; |
| 1332 | |
| 1333 | ndp.ndp32->dpe32[index].dwDatagramLength = cpu_to_le32(skb->len); |
| 1334 | ndp.ndp32->dpe32[index].dwDatagramIndex = cpu_to_le32(skb_out->len); |
| 1335 | ndp.ndp32->wLength = cpu_to_le16(ndplen + sizeof(struct usb_cdc_ncm_dpe32)); |
| 1336 | } |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 1337 | skb_put_data(skb_out, skb->data, skb->len); |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1338 | ctx->tx_curr_frame_payload += skb->len; /* count real tx payload data */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1339 | dev_kfree_skb_any(skb); |
| 1340 | skb = NULL; |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1341 | |
| 1342 | /* send now if this NDP is full */ |
| 1343 | if (index >= CDC_NCM_DPT_DATAGRAMS_MAX) { |
| 1344 | ready2send = 1; |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1345 | ctx->tx_reason_ndp_full++; /* count reason for transmitting */ |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1346 | break; |
| 1347 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | /* free up any dangling skb */ |
| 1351 | if (skb != NULL) { |
| 1352 | dev_kfree_skb_any(skb); |
| 1353 | skb = NULL; |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1354 | dev->net->stats.tx_dropped++; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | ctx->tx_curr_frame_num = n; |
| 1358 | |
| 1359 | if (n == 0) { |
| 1360 | /* wait for more frames */ |
| 1361 | /* push variables */ |
| 1362 | ctx->tx_curr_skb = skb_out; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1363 | goto exit_no_skb; |
| 1364 | |
Bjørn Mork | 6c4e548 | 2014-05-16 21:48:22 +0200 | [diff] [blame] | 1365 | } else if ((n < ctx->tx_max_datagrams) && (ready2send == 0) && (ctx->timer_interval > 0)) { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1366 | /* wait for more frames */ |
| 1367 | /* push variables */ |
| 1368 | ctx->tx_curr_skb = skb_out; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1369 | /* set the pending count */ |
| 1370 | if (n < CDC_NCM_RESTART_TIMER_DATAGRAM_CNT) |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1371 | ctx->tx_timer_pending = CDC_NCM_TIMER_PENDING_CNT; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1372 | goto exit_no_skb; |
| 1373 | |
| 1374 | } else { |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1375 | if (n == ctx->tx_max_datagrams) |
| 1376 | ctx->tx_reason_max_datagram++; /* count reason for transmitting */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1377 | /* frame goes out */ |
| 1378 | /* variables will be reset at next call */ |
| 1379 | } |
| 1380 | |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1381 | /* If requested, put NDP at end of frame. */ |
| 1382 | if (ctx->drvflags & CDC_NCM_FLAG_NDP_TO_END) { |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1383 | if (ctx->is_ndp16) { |
| 1384 | nth.nth16 = (struct usb_cdc_ncm_nth16 *)skb_out->data; |
| 1385 | cdc_ncm_align_tail(skb_out, ctx->tx_ndp_modulus, 0, ctx->tx_curr_size - ctx->max_ndp_size); |
| 1386 | nth.nth16->wNdpIndex = cpu_to_le16(skb_out->len); |
| 1387 | skb_put_data(skb_out, ctx->delayed_ndp16, ctx->max_ndp_size); |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1388 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1389 | /* Zero out delayed NDP - signature checking will naturally fail. */ |
| 1390 | ndp.ndp16 = memset(ctx->delayed_ndp16, 0, ctx->max_ndp_size); |
| 1391 | } else { |
| 1392 | nth.nth32 = (struct usb_cdc_ncm_nth32 *)skb_out->data; |
| 1393 | cdc_ncm_align_tail(skb_out, ctx->tx_ndp_modulus, 0, ctx->tx_curr_size - ctx->max_ndp_size); |
| 1394 | nth.nth32->dwNdpIndex = cpu_to_le32(skb_out->len); |
| 1395 | skb_put_data(skb_out, ctx->delayed_ndp32, ctx->max_ndp_size); |
| 1396 | |
| 1397 | ndp.ndp32 = memset(ctx->delayed_ndp32, 0, ctx->max_ndp_size); |
| 1398 | } |
Enrico Mioso | 4a0e3e9 | 2015-07-08 13:05:57 +0200 | [diff] [blame] | 1399 | } |
| 1400 | |
Bjørn Mork | 43e4c6d | 2014-05-16 21:48:24 +0200 | [diff] [blame] | 1401 | /* If collected data size is less or equal ctx->min_tx_pkt |
Bjørn Mork | 20572226 | 2013-11-01 11:16:38 +0100 | [diff] [blame] | 1402 | * bytes, we send buffers as it is. If we get more data, it |
| 1403 | * would be more efficient for USB HS mobile device with DMA |
| 1404 | * engine to receive a full size NTB, than canceling DMA |
| 1405 | * transfer and receiving a short packet. |
Bjørn Mork | 4d619f62 | 2013-11-01 11:16:49 +0100 | [diff] [blame] | 1406 | * |
| 1407 | * This optimization support is pointless if we end up sending |
| 1408 | * a ZLP after full sized NTBs. |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1409 | */ |
Bjørn Mork | 4d619f62 | 2013-11-01 11:16:49 +0100 | [diff] [blame] | 1410 | if (!(dev->driver_info->flags & FLAG_SEND_ZLP) && |
Jim Baxter | aeca3a7 | 2017-05-08 13:49:57 +0100 | [diff] [blame] | 1411 | skb_out->len > ctx->min_tx_pkt) { |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1412 | padding_count = ctx->tx_curr_size - skb_out->len; |
Johannes Berg | b080db5 | 2017-06-16 14:29:19 +0200 | [diff] [blame] | 1413 | skb_put_zero(skb_out, padding_count); |
Jim Baxter | e1069bb | 2017-06-28 21:35:29 +0100 | [diff] [blame] | 1414 | } else if (skb_out->len < ctx->tx_curr_size && |
Jim Baxter | aeca3a7 | 2017-05-08 13:49:57 +0100 | [diff] [blame] | 1415 | (skb_out->len % dev->maxpacket) == 0) { |
Johannes Berg | 634fef6 | 2017-06-16 14:29:24 +0200 | [diff] [blame] | 1416 | skb_put_u8(skb_out, 0); /* force short packet */ |
Jim Baxter | aeca3a7 | 2017-05-08 13:49:57 +0100 | [diff] [blame] | 1417 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1418 | |
Bjørn Mork | c78b7c5 | 2012-10-22 10:56:34 +0000 | [diff] [blame] | 1419 | /* set final frame length */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1420 | if (ctx->is_ndp16) { |
| 1421 | nth.nth16 = (struct usb_cdc_ncm_nth16 *)skb_out->data; |
| 1422 | nth.nth16->wBlockLength = cpu_to_le16(skb_out->len); |
| 1423 | } else { |
| 1424 | nth.nth32 = (struct usb_cdc_ncm_nth32 *)skb_out->data; |
| 1425 | nth.nth32->dwBlockLength = cpu_to_le32(skb_out->len); |
| 1426 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1427 | |
| 1428 | /* return skb */ |
| 1429 | ctx->tx_curr_skb = NULL; |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1430 | |
| 1431 | /* keep private stats: framing overhead and number of NTBs */ |
| 1432 | ctx->tx_overhead += skb_out->len - ctx->tx_curr_frame_payload; |
| 1433 | ctx->tx_ntbs++; |
| 1434 | |
Ben Hutchings | 7a1e890 | 2015-03-25 21:41:33 +0100 | [diff] [blame] | 1435 | /* usbnet will count all the framing overhead by default. |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1436 | * Adjust the stats so that the tx_bytes counter show real |
| 1437 | * payload data instead. |
| 1438 | */ |
Ben Hutchings | 7a1e890 | 2015-03-25 21:41:33 +0100 | [diff] [blame] | 1439 | usbnet_set_skb_tx_stats(skb_out, n, |
Bjørn Mork | 44f6731 | 2015-05-22 13:15:22 +0200 | [diff] [blame] | 1440 | (long)ctx->tx_curr_frame_payload - skb_out->len); |
Ben Hutchings | 1e9e39f | 2015-02-26 19:34:37 +0000 | [diff] [blame] | 1441 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1442 | return skb_out; |
| 1443 | |
| 1444 | exit_no_skb: |
Bjørn Mork | 046c659 | 2014-05-16 21:48:29 +0200 | [diff] [blame] | 1445 | /* Start timer, if there is a remaining non-empty skb */ |
| 1446 | if (ctx->tx_curr_skb != NULL && n > 0) |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1447 | cdc_ncm_tx_timeout_start(ctx); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1448 | return NULL; |
| 1449 | } |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1450 | EXPORT_SYMBOL_GPL(cdc_ncm_fill_tx_frame); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1451 | |
| 1452 | static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx) |
| 1453 | { |
| 1454 | /* start timer, if not already started */ |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1455 | if (!(hrtimer_active(&ctx->tx_timer) || atomic_read(&ctx->stop))) |
| 1456 | hrtimer_start(&ctx->tx_timer, |
Thomas Gleixner | 8b0e195 | 2016-12-25 12:30:41 +0100 | [diff] [blame] | 1457 | ctx->timer_interval, |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1458 | HRTIMER_MODE_REL); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1459 | } |
| 1460 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1461 | static enum hrtimer_restart cdc_ncm_tx_timer_cb(struct hrtimer *timer) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1462 | { |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1463 | struct cdc_ncm_ctx *ctx = |
| 1464 | container_of(timer, struct cdc_ncm_ctx, tx_timer); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1465 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1466 | if (!atomic_read(&ctx->stop)) |
| 1467 | tasklet_schedule(&ctx->bh); |
| 1468 | return HRTIMER_NORESTART; |
| 1469 | } |
| 1470 | |
| 1471 | static void cdc_ncm_txpath_bh(unsigned long param) |
| 1472 | { |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1473 | struct usbnet *dev = (struct usbnet *)param; |
| 1474 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1475 | |
| 1476 | spin_lock_bh(&ctx->mtx); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1477 | if (ctx->tx_timer_pending != 0) { |
| 1478 | ctx->tx_timer_pending--; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1479 | cdc_ncm_tx_timeout_start(ctx); |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1480 | spin_unlock_bh(&ctx->mtx); |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1481 | } else if (dev->net != NULL) { |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1482 | ctx->tx_reason_timeout++; /* count reason for transmitting */ |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1483 | spin_unlock_bh(&ctx->mtx); |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1484 | netif_tx_lock_bh(dev->net); |
| 1485 | usbnet_start_xmit(NULL, dev->net); |
| 1486 | netif_tx_unlock_bh(dev->net); |
Bjørn Mork | 7b1e0cb | 2012-10-25 21:44:09 +0000 | [diff] [blame] | 1487 | } else { |
| 1488 | spin_unlock_bh(&ctx->mtx); |
Alexey Orishko | f742aa8 | 2011-01-17 07:07:25 +0000 | [diff] [blame] | 1489 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1490 | } |
| 1491 | |
Enrico Mioso | 2f69702c | 2013-11-04 09:50:47 +0100 | [diff] [blame] | 1492 | struct sk_buff * |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1493 | cdc_ncm_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) |
| 1494 | { |
| 1495 | struct sk_buff *skb_out; |
| 1496 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1497 | |
| 1498 | /* |
| 1499 | * The Ethernet API we are using does not support transmitting |
| 1500 | * multiple Ethernet frames in a single call. This driver will |
| 1501 | * accumulate multiple Ethernet frames and send out a larger |
| 1502 | * USB frame when the USB buffer is full or when a single jiffies |
| 1503 | * timeout happens. |
| 1504 | */ |
| 1505 | if (ctx == NULL) |
| 1506 | goto error; |
| 1507 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1508 | spin_lock_bh(&ctx->mtx); |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1509 | |
| 1510 | if (ctx->is_ndp16) |
| 1511 | skb_out = cdc_ncm_fill_tx_frame(dev, skb, cpu_to_le32(USB_CDC_NCM_NDP16_NOCRC_SIGN)); |
| 1512 | else |
| 1513 | skb_out = cdc_ncm_fill_tx_frame(dev, skb, cpu_to_le32(USB_CDC_NCM_NDP32_NOCRC_SIGN)); |
| 1514 | |
Alexey Orishko | c84ff1d | 2012-03-14 11:26:10 +0000 | [diff] [blame] | 1515 | spin_unlock_bh(&ctx->mtx); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1516 | return skb_out; |
| 1517 | |
| 1518 | error: |
| 1519 | if (skb != NULL) |
| 1520 | dev_kfree_skb_any(skb); |
| 1521 | |
| 1522 | return NULL; |
| 1523 | } |
Enrico Mioso | 2f69702c | 2013-11-04 09:50:47 +0100 | [diff] [blame] | 1524 | EXPORT_SYMBOL_GPL(cdc_ncm_tx_fixup); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1525 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1526 | /* verify NTB header and return offset of first NDP, or negative error */ |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1527 | int cdc_ncm_rx_verify_nth16(struct cdc_ncm_ctx *ctx, struct sk_buff *skb_in) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1528 | { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1529 | struct usbnet *dev = netdev_priv(skb_in->dev); |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1530 | struct usb_cdc_ncm_nth16 *nth16; |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1531 | int len; |
| 1532 | int ret = -EINVAL; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1533 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1534 | if (ctx == NULL) |
| 1535 | goto error; |
| 1536 | |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1537 | if (skb_in->len < (sizeof(struct usb_cdc_ncm_nth16) + |
| 1538 | sizeof(struct usb_cdc_ncm_ndp16))) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1539 | netif_dbg(dev, rx_err, dev->net, "frame too short\n"); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1540 | goto error; |
| 1541 | } |
| 1542 | |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1543 | nth16 = (struct usb_cdc_ncm_nth16 *)skb_in->data; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1544 | |
Bjørn Mork | 986e10d | 2013-11-01 11:16:56 +0100 | [diff] [blame] | 1545 | if (nth16->dwSignature != cpu_to_le32(USB_CDC_NCM_NTH16_SIGN)) { |
Bjørn Mork | 5448d75 | 2013-11-01 11:16:55 +0100 | [diff] [blame] | 1546 | netif_dbg(dev, rx_err, dev->net, |
| 1547 | "invalid NTH16 signature <%#010x>\n", |
| 1548 | le32_to_cpu(nth16->dwSignature)); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1549 | goto error; |
| 1550 | } |
| 1551 | |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1552 | len = le16_to_cpu(nth16->wBlockLength); |
| 1553 | if (len > ctx->rx_max) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1554 | netif_dbg(dev, rx_err, dev->net, |
| 1555 | "unsupported NTB block length %u/%u\n", len, |
| 1556 | ctx->rx_max); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1557 | goto error; |
| 1558 | } |
| 1559 | |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1560 | if ((ctx->rx_seq + 1) != le16_to_cpu(nth16->wSequence) && |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1561 | (ctx->rx_seq || le16_to_cpu(nth16->wSequence)) && |
| 1562 | !((ctx->rx_seq == 0xffff) && !le16_to_cpu(nth16->wSequence))) { |
| 1563 | netif_dbg(dev, rx_err, dev->net, |
| 1564 | "sequence number glitch prev=%d curr=%d\n", |
| 1565 | ctx->rx_seq, le16_to_cpu(nth16->wSequence)); |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1566 | } |
| 1567 | ctx->rx_seq = le16_to_cpu(nth16->wSequence); |
| 1568 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1569 | ret = le16_to_cpu(nth16->wNdpIndex); |
| 1570 | error: |
| 1571 | return ret; |
| 1572 | } |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1573 | EXPORT_SYMBOL_GPL(cdc_ncm_rx_verify_nth16); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1574 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1575 | int cdc_ncm_rx_verify_nth32(struct cdc_ncm_ctx *ctx, struct sk_buff *skb_in) |
| 1576 | { |
| 1577 | struct usbnet *dev = netdev_priv(skb_in->dev); |
| 1578 | struct usb_cdc_ncm_nth32 *nth32; |
| 1579 | int len; |
| 1580 | int ret = -EINVAL; |
| 1581 | |
| 1582 | if (ctx == NULL) |
| 1583 | goto error; |
| 1584 | |
| 1585 | if (skb_in->len < (sizeof(struct usb_cdc_ncm_nth32) + |
| 1586 | sizeof(struct usb_cdc_ncm_ndp32))) { |
| 1587 | netif_dbg(dev, rx_err, dev->net, "frame too short\n"); |
| 1588 | goto error; |
| 1589 | } |
| 1590 | |
| 1591 | nth32 = (struct usb_cdc_ncm_nth32 *)skb_in->data; |
| 1592 | |
| 1593 | if (nth32->dwSignature != cpu_to_le32(USB_CDC_NCM_NTH32_SIGN)) { |
| 1594 | netif_dbg(dev, rx_err, dev->net, |
| 1595 | "invalid NTH32 signature <%#010x>\n", |
| 1596 | le32_to_cpu(nth32->dwSignature)); |
| 1597 | goto error; |
| 1598 | } |
| 1599 | |
| 1600 | len = le32_to_cpu(nth32->dwBlockLength); |
| 1601 | if (len > ctx->rx_max) { |
| 1602 | netif_dbg(dev, rx_err, dev->net, |
| 1603 | "unsupported NTB block length %u/%u\n", len, |
| 1604 | ctx->rx_max); |
| 1605 | goto error; |
| 1606 | } |
| 1607 | |
| 1608 | if ((ctx->rx_seq + 1) != le16_to_cpu(nth32->wSequence) && |
| 1609 | (ctx->rx_seq || le16_to_cpu(nth32->wSequence)) && |
| 1610 | !((ctx->rx_seq == 0xffff) && !le16_to_cpu(nth32->wSequence))) { |
| 1611 | netif_dbg(dev, rx_err, dev->net, |
| 1612 | "sequence number glitch prev=%d curr=%d\n", |
| 1613 | ctx->rx_seq, le16_to_cpu(nth32->wSequence)); |
| 1614 | } |
| 1615 | ctx->rx_seq = le16_to_cpu(nth32->wSequence); |
| 1616 | |
| 1617 | ret = le32_to_cpu(nth32->dwNdpIndex); |
| 1618 | error: |
| 1619 | return ret; |
| 1620 | } |
| 1621 | EXPORT_SYMBOL_GPL(cdc_ncm_rx_verify_nth32); |
| 1622 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1623 | /* verify NDP header and return number of datagrams, or negative error */ |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1624 | int cdc_ncm_rx_verify_ndp16(struct sk_buff *skb_in, int ndpoffset) |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1625 | { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1626 | struct usbnet *dev = netdev_priv(skb_in->dev); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1627 | struct usb_cdc_ncm_ndp16 *ndp16; |
| 1628 | int ret = -EINVAL; |
| 1629 | |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1630 | if ((ndpoffset + sizeof(struct usb_cdc_ncm_ndp16)) > skb_in->len) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1631 | netif_dbg(dev, rx_err, dev->net, "invalid NDP offset <%u>\n", |
| 1632 | ndpoffset); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1633 | goto error; |
| 1634 | } |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1635 | ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb_in->data + ndpoffset); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1636 | |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1637 | if (le16_to_cpu(ndp16->wLength) < USB_CDC_NCM_NDP16_LENGTH_MIN) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1638 | netif_dbg(dev, rx_err, dev->net, "invalid DPT16 length <%u>\n", |
| 1639 | le16_to_cpu(ndp16->wLength)); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1640 | goto error; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1641 | } |
| 1642 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1643 | ret = ((le16_to_cpu(ndp16->wLength) - |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1644 | sizeof(struct usb_cdc_ncm_ndp16)) / |
| 1645 | sizeof(struct usb_cdc_ncm_dpe16)); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1646 | ret--; /* we process NDP entries except for the last one */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1647 | |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1648 | if ((sizeof(struct usb_cdc_ncm_ndp16) + |
| 1649 | ret * (sizeof(struct usb_cdc_ncm_dpe16))) > skb_in->len) { |
| 1650 | netif_dbg(dev, rx_err, dev->net, "Invalid nframes = %d\n", ret); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1651 | ret = -EINVAL; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1652 | } |
| 1653 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1654 | error: |
| 1655 | return ret; |
| 1656 | } |
Bjørn Mork | c91ce3b | 2012-10-22 10:56:35 +0000 | [diff] [blame] | 1657 | EXPORT_SYMBOL_GPL(cdc_ncm_rx_verify_ndp16); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1658 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1659 | /* verify NDP header and return number of datagrams, or negative error */ |
| 1660 | int cdc_ncm_rx_verify_ndp32(struct sk_buff *skb_in, int ndpoffset) |
| 1661 | { |
| 1662 | struct usbnet *dev = netdev_priv(skb_in->dev); |
| 1663 | struct usb_cdc_ncm_ndp32 *ndp32; |
| 1664 | int ret = -EINVAL; |
| 1665 | |
| 1666 | if ((ndpoffset + sizeof(struct usb_cdc_ncm_ndp32)) > skb_in->len) { |
| 1667 | netif_dbg(dev, rx_err, dev->net, "invalid NDP offset <%u>\n", |
| 1668 | ndpoffset); |
| 1669 | goto error; |
| 1670 | } |
| 1671 | ndp32 = (struct usb_cdc_ncm_ndp32 *)(skb_in->data + ndpoffset); |
| 1672 | |
| 1673 | if (le16_to_cpu(ndp32->wLength) < USB_CDC_NCM_NDP32_LENGTH_MIN) { |
| 1674 | netif_dbg(dev, rx_err, dev->net, "invalid DPT32 length <%u>\n", |
| 1675 | le16_to_cpu(ndp32->wLength)); |
| 1676 | goto error; |
| 1677 | } |
| 1678 | |
| 1679 | ret = ((le16_to_cpu(ndp32->wLength) - |
| 1680 | sizeof(struct usb_cdc_ncm_ndp32)) / |
| 1681 | sizeof(struct usb_cdc_ncm_dpe32)); |
| 1682 | ret--; /* we process NDP entries except for the last one */ |
| 1683 | |
| 1684 | if ((sizeof(struct usb_cdc_ncm_ndp32) + |
| 1685 | ret * (sizeof(struct usb_cdc_ncm_dpe32))) > skb_in->len) { |
| 1686 | netif_dbg(dev, rx_err, dev->net, "Invalid nframes = %d\n", ret); |
| 1687 | ret = -EINVAL; |
| 1688 | } |
| 1689 | |
| 1690 | error: |
| 1691 | return ret; |
| 1692 | } |
| 1693 | EXPORT_SYMBOL_GPL(cdc_ncm_rx_verify_ndp32); |
| 1694 | |
Enrico Mioso | 2f69702c | 2013-11-04 09:50:47 +0100 | [diff] [blame] | 1695 | int cdc_ncm_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in) |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1696 | { |
| 1697 | struct sk_buff *skb; |
| 1698 | struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0]; |
| 1699 | int len; |
| 1700 | int nframes; |
| 1701 | int x; |
| 1702 | int offset; |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1703 | union { |
| 1704 | struct usb_cdc_ncm_ndp16 *ndp16; |
| 1705 | struct usb_cdc_ncm_ndp32 *ndp32; |
| 1706 | } ndp; |
| 1707 | union { |
| 1708 | struct usb_cdc_ncm_dpe16 *dpe16; |
| 1709 | struct usb_cdc_ncm_dpe32 *dpe32; |
| 1710 | } dpe; |
| 1711 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1712 | int ndpoffset; |
| 1713 | int loopcount = 50; /* arbitrary max preventing infinite loop */ |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1714 | u32 payload = 0; |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1715 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1716 | if (ctx->is_ndp16) |
| 1717 | ndpoffset = cdc_ncm_rx_verify_nth16(ctx, skb_in); |
| 1718 | else |
| 1719 | ndpoffset = cdc_ncm_rx_verify_nth32(ctx, skb_in); |
| 1720 | |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1721 | if (ndpoffset < 0) |
| 1722 | goto error; |
| 1723 | |
| 1724 | next_ndp: |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1725 | if (ctx->is_ndp16) { |
| 1726 | nframes = cdc_ncm_rx_verify_ndp16(skb_in, ndpoffset); |
| 1727 | if (nframes < 0) |
| 1728 | goto error; |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1729 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1730 | ndp.ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb_in->data + ndpoffset); |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1731 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1732 | if (ndp.ndp16->dwSignature != cpu_to_le32(USB_CDC_NCM_NDP16_NOCRC_SIGN)) { |
| 1733 | netif_dbg(dev, rx_err, dev->net, |
| 1734 | "invalid DPT16 signature <%#010x>\n", |
| 1735 | le32_to_cpu(ndp.ndp16->dwSignature)); |
| 1736 | goto err_ndp; |
| 1737 | } |
| 1738 | dpe.dpe16 = ndp.ndp16->dpe16; |
| 1739 | } else { |
| 1740 | nframes = cdc_ncm_rx_verify_ndp32(skb_in, ndpoffset); |
| 1741 | if (nframes < 0) |
| 1742 | goto error; |
| 1743 | |
| 1744 | ndp.ndp32 = (struct usb_cdc_ncm_ndp32 *)(skb_in->data + ndpoffset); |
| 1745 | |
| 1746 | if (ndp.ndp32->dwSignature != cpu_to_le32(USB_CDC_NCM_NDP32_NOCRC_SIGN)) { |
| 1747 | netif_dbg(dev, rx_err, dev->net, |
| 1748 | "invalid DPT32 signature <%#010x>\n", |
| 1749 | le32_to_cpu(ndp.ndp32->dwSignature)); |
| 1750 | goto err_ndp; |
| 1751 | } |
| 1752 | dpe.dpe32 = ndp.ndp32->dpe32; |
Bjørn Mork | ff06ab1 | 2012-10-22 10:56:33 +0000 | [diff] [blame] | 1753 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1754 | |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1755 | for (x = 0; x < nframes; x++) { |
| 1756 | if (ctx->is_ndp16) { |
| 1757 | offset = le16_to_cpu(dpe.dpe16->wDatagramIndex); |
| 1758 | len = le16_to_cpu(dpe.dpe16->wDatagramLength); |
| 1759 | } else { |
| 1760 | offset = le32_to_cpu(dpe.dpe32->dwDatagramIndex); |
| 1761 | len = le32_to_cpu(dpe.dpe32->dwDatagramLength); |
| 1762 | } |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1763 | |
| 1764 | /* |
| 1765 | * CDC NCM ch. 3.7 |
| 1766 | * All entries after first NULL entry are to be ignored |
| 1767 | */ |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1768 | if ((offset == 0) || (len == 0)) { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1769 | if (!x) |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1770 | goto err_ndp; /* empty NTB */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1771 | break; |
| 1772 | } |
| 1773 | |
| 1774 | /* sanity checking */ |
Alexey Orishko | d5ddb4a | 2012-03-14 11:26:12 +0000 | [diff] [blame] | 1775 | if (((offset + len) > skb_in->len) || |
| 1776 | (len > ctx->rx_max) || (len < ETH_HLEN)) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1777 | netif_dbg(dev, rx_err, dev->net, |
| 1778 | "invalid frame detected (ignored) offset[%u]=%u, length=%u, skb=%p\n", |
| 1779 | x, offset, len, skb_in); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1780 | if (!x) |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1781 | goto err_ndp; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1782 | break; |
| 1783 | |
| 1784 | } else { |
Bjørn Mork | 1e2c611 | 2014-05-30 09:31:03 +0200 | [diff] [blame] | 1785 | /* create a fresh copy to reduce truesize */ |
| 1786 | skb = netdev_alloc_skb_ip_align(dev->net, len); |
Jesper Juhl | 9e56790 | 2011-01-13 11:40:11 +0000 | [diff] [blame] | 1787 | if (!skb) |
| 1788 | goto error; |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 1789 | skb_put_data(skb, skb_in->data + offset, len); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1790 | usbnet_skb_return(dev, skb); |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1791 | payload += len; /* count payload bytes in this NTB */ |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1792 | } |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1793 | |
| 1794 | if (ctx->is_ndp16) |
| 1795 | dpe.dpe16++; |
| 1796 | else |
| 1797 | dpe.dpe32++; |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1798 | } |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1799 | err_ndp: |
| 1800 | /* are there more NDPs to process? */ |
Alexander Bersenev | 0fa81b3 | 2020-03-06 01:33:16 +0500 | [diff] [blame] | 1801 | if (ctx->is_ndp16) |
| 1802 | ndpoffset = le16_to_cpu(ndp.ndp16->wNextNdpIndex); |
| 1803 | else |
| 1804 | ndpoffset = le32_to_cpu(ndp.ndp32->dwNextNdpIndex); |
| 1805 | |
Bjørn Mork | 75d67d3 | 2012-10-22 10:56:32 +0000 | [diff] [blame] | 1806 | if (ndpoffset && loopcount--) |
| 1807 | goto next_ndp; |
| 1808 | |
Bjørn Mork | beeecd4 | 2014-05-16 21:48:25 +0200 | [diff] [blame] | 1809 | /* update stats */ |
| 1810 | ctx->rx_overhead += skb_in->len - payload; |
| 1811 | ctx->rx_ntbs++; |
| 1812 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1813 | return 1; |
| 1814 | error: |
| 1815 | return 0; |
| 1816 | } |
Enrico Mioso | 2f69702c | 2013-11-04 09:50:47 +0100 | [diff] [blame] | 1817 | EXPORT_SYMBOL_GPL(cdc_ncm_rx_fixup); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1818 | |
| 1819 | static void |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1820 | cdc_ncm_speed_change(struct usbnet *dev, |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1821 | struct usb_cdc_speed_change *data) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1822 | { |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1823 | uint32_t rx_speed = le32_to_cpu(data->DLBitRRate); |
| 1824 | uint32_t tx_speed = le32_to_cpu(data->ULBitRate); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1825 | |
| 1826 | /* |
| 1827 | * Currently the USB-NET API does not support reporting the actual |
| 1828 | * device speed. Do print it instead. |
| 1829 | */ |
Bjørn Mork | f3028c5 | 2013-11-01 11:16:44 +0100 | [diff] [blame] | 1830 | if ((tx_speed > 1000000) && (rx_speed > 1000000)) { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1831 | netif_info(dev, link, dev->net, |
Bjørn Mork | 916f764 | 2014-05-16 21:48:27 +0200 | [diff] [blame] | 1832 | "%u mbit/s downlink %u mbit/s uplink\n", |
| 1833 | (unsigned int)(rx_speed / 1000000U), |
| 1834 | (unsigned int)(tx_speed / 1000000U)); |
Bjørn Mork | f3028c5 | 2013-11-01 11:16:44 +0100 | [diff] [blame] | 1835 | } else { |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1836 | netif_info(dev, link, dev->net, |
Bjørn Mork | 916f764 | 2014-05-16 21:48:27 +0200 | [diff] [blame] | 1837 | "%u kbit/s downlink %u kbit/s uplink\n", |
| 1838 | (unsigned int)(rx_speed / 1000U), |
| 1839 | (unsigned int)(tx_speed / 1000U)); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1840 | } |
| 1841 | } |
| 1842 | |
| 1843 | static void cdc_ncm_status(struct usbnet *dev, struct urb *urb) |
| 1844 | { |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1845 | struct usb_cdc_notification *event; |
| 1846 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1847 | if (urb->actual_length < sizeof(*event)) |
| 1848 | return; |
| 1849 | |
| 1850 | /* test for split data in 8-byte chunks */ |
| 1851 | if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) { |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1852 | cdc_ncm_speed_change(dev, |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1853 | (struct usb_cdc_speed_change *)urb->transfer_buffer); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1854 | return; |
| 1855 | } |
| 1856 | |
| 1857 | event = urb->transfer_buffer; |
| 1858 | |
| 1859 | switch (event->bNotificationType) { |
| 1860 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
| 1861 | /* |
| 1862 | * According to the CDC NCM specification ch.7.1 |
| 1863 | * USB_CDC_NOTIFY_NETWORK_CONNECTION notification shall be |
| 1864 | * sent by device after USB_CDC_NOTIFY_SPEED_CHANGE. |
| 1865 | */ |
Bjørn Mork | ae223cd | 2013-11-01 11:16:54 +0100 | [diff] [blame] | 1866 | netif_info(dev, link, dev->net, |
| 1867 | "network connection: %sconnected\n", |
Bjørn Mork | fa83dbe | 2014-05-16 21:48:28 +0200 | [diff] [blame] | 1868 | !!event->wValue ? "" : "dis"); |
| 1869 | usbnet_link_change(dev, !!event->wValue, 0); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1870 | break; |
| 1871 | |
| 1872 | case USB_CDC_NOTIFY_SPEED_CHANGE: |
Alexey Orishko | 84e77a8 | 2011-02-07 09:45:10 +0000 | [diff] [blame] | 1873 | if (urb->actual_length < (sizeof(*event) + |
| 1874 | sizeof(struct usb_cdc_speed_change))) |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1875 | set_bit(EVENT_STS_SPLIT, &dev->flags); |
| 1876 | else |
Bjørn Mork | bed6f76 | 2013-11-01 11:16:42 +0100 | [diff] [blame] | 1877 | cdc_ncm_speed_change(dev, |
| 1878 | (struct usb_cdc_speed_change *)&event[1]); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1879 | break; |
| 1880 | |
| 1881 | default: |
Bjørn Mork | 67a3660 | 2013-04-08 08:26:23 +0000 | [diff] [blame] | 1882 | dev_dbg(&dev->udev->dev, |
| 1883 | "NCM: unexpected notification 0x%02x!\n", |
| 1884 | event->bNotificationType); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1885 | break; |
| 1886 | } |
| 1887 | } |
| 1888 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1889 | static const struct driver_info cdc_ncm_info = { |
| 1890 | .description = "CDC NCM", |
Bjørn Mork | 4d06dd5 | 2016-03-07 21:15:36 +0100 | [diff] [blame] | 1891 | .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET |
| 1892 | | FLAG_LINK_INTR, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1893 | .bind = cdc_ncm_bind, |
| 1894 | .unbind = cdc_ncm_unbind, |
Oliver Neukum | a5e4070 | 2012-12-18 04:46:12 +0000 | [diff] [blame] | 1895 | .manage_power = usbnet_manage_power, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1896 | .status = cdc_ncm_status, |
| 1897 | .rx_fixup = cdc_ncm_rx_fixup, |
| 1898 | .tx_fixup = cdc_ncm_tx_fixup, |
Miguel Rodríguez Pérez | e10dcb1 | 2020-07-15 20:41:00 +0200 | [diff] [blame] | 1899 | .set_rx_mode = usbnet_cdc_update_filter, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 1900 | }; |
| 1901 | |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 1902 | /* Same as cdc_ncm_info, but with FLAG_WWAN */ |
| 1903 | static const struct driver_info wwan_info = { |
| 1904 | .description = "Mobile Broadband Network Device", |
| 1905 | .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET |
Bjørn Mork | 4d06dd5 | 2016-03-07 21:15:36 +0100 | [diff] [blame] | 1906 | | FLAG_LINK_INTR | FLAG_WWAN, |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 1907 | .bind = cdc_ncm_bind, |
| 1908 | .unbind = cdc_ncm_unbind, |
Oliver Neukum | a5e4070 | 2012-12-18 04:46:12 +0000 | [diff] [blame] | 1909 | .manage_power = usbnet_manage_power, |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 1910 | .status = cdc_ncm_status, |
| 1911 | .rx_fixup = cdc_ncm_rx_fixup, |
| 1912 | .tx_fixup = cdc_ncm_tx_fixup, |
Miguel Rodríguez Pérez | e10dcb1 | 2020-07-15 20:41:00 +0200 | [diff] [blame] | 1913 | .set_rx_mode = usbnet_cdc_update_filter, |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 1914 | }; |
| 1915 | |
Wei Shuai | 2f62d5a | 2013-01-21 06:00:32 +0000 | [diff] [blame] | 1916 | /* Same as wwan_info, but with FLAG_NOARP */ |
| 1917 | static const struct driver_info wwan_noarp_info = { |
| 1918 | .description = "Mobile Broadband Network Device (NO ARP)", |
| 1919 | .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET |
Bjørn Mork | 4d06dd5 | 2016-03-07 21:15:36 +0100 | [diff] [blame] | 1920 | | FLAG_LINK_INTR | FLAG_WWAN | FLAG_NOARP, |
Wei Shuai | 2f62d5a | 2013-01-21 06:00:32 +0000 | [diff] [blame] | 1921 | .bind = cdc_ncm_bind, |
| 1922 | .unbind = cdc_ncm_unbind, |
Wei Shuai | 2f62d5a | 2013-01-21 06:00:32 +0000 | [diff] [blame] | 1923 | .manage_power = usbnet_manage_power, |
| 1924 | .status = cdc_ncm_status, |
| 1925 | .rx_fixup = cdc_ncm_rx_fixup, |
| 1926 | .tx_fixup = cdc_ncm_tx_fixup, |
Miguel Rodríguez Pérez | e10dcb1 | 2020-07-15 20:41:00 +0200 | [diff] [blame] | 1927 | .set_rx_mode = usbnet_cdc_update_filter, |
Wei Shuai | 2f62d5a | 2013-01-21 06:00:32 +0000 | [diff] [blame] | 1928 | }; |
| 1929 | |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 1930 | static const struct usb_device_id cdc_devs[] = { |
| 1931 | /* Ericsson MBM devices like F5521gw */ |
| 1932 | { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO |
| 1933 | | USB_DEVICE_ID_MATCH_VENDOR, |
| 1934 | .idVendor = 0x0bdb, |
| 1935 | .bInterfaceClass = USB_CLASS_COMM, |
| 1936 | .bInterfaceSubClass = USB_CDC_SUBCLASS_NCM, |
| 1937 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, |
| 1938 | .driver_info = (unsigned long) &wwan_info, |
| 1939 | }, |
| 1940 | |
Daniele Palmas | 79f4223 | 2016-03-31 15:16:47 +0200 | [diff] [blame] | 1941 | /* Telit LE910 V2 */ |
| 1942 | { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x0036, |
| 1943 | USB_CLASS_COMM, |
| 1944 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 1945 | .driver_info = (unsigned long)&wwan_noarp_info, |
| 1946 | }, |
| 1947 | |
Daniele Palmas | 670c0d6 | 2015-12-18 14:43:33 +0100 | [diff] [blame] | 1948 | /* DW5812 LTE Verizon Mobile Broadband Card |
| 1949 | * Unlike DW5550 this device requires FLAG_NOARP |
| 1950 | */ |
| 1951 | { USB_DEVICE_AND_INTERFACE_INFO(0x413c, 0x81bb, |
| 1952 | USB_CLASS_COMM, |
| 1953 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 1954 | .driver_info = (unsigned long)&wwan_noarp_info, |
| 1955 | }, |
| 1956 | |
Daniele Palmas | fb83d5f | 2015-12-18 14:43:34 +0100 | [diff] [blame] | 1957 | /* DW5813 LTE AT&T Mobile Broadband Card |
| 1958 | * Unlike DW5550 this device requires FLAG_NOARP |
| 1959 | */ |
| 1960 | { USB_DEVICE_AND_INTERFACE_INFO(0x413c, 0x81bc, |
| 1961 | USB_CLASS_COMM, |
| 1962 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 1963 | .driver_info = (unsigned long)&wwan_noarp_info, |
| 1964 | }, |
| 1965 | |
Peter Meiser | f3a1ef9c | 2012-08-02 02:30:20 +0000 | [diff] [blame] | 1966 | /* Dell branded MBM devices like DW5550 */ |
| 1967 | { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO |
| 1968 | | USB_DEVICE_ID_MATCH_VENDOR, |
| 1969 | .idVendor = 0x413c, |
| 1970 | .bInterfaceClass = USB_CLASS_COMM, |
| 1971 | .bInterfaceSubClass = USB_CDC_SUBCLASS_NCM, |
| 1972 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, |
| 1973 | .driver_info = (unsigned long) &wwan_info, |
| 1974 | }, |
| 1975 | |
| 1976 | /* Toshiba branded MBM devices */ |
| 1977 | { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO |
| 1978 | | USB_DEVICE_ID_MATCH_VENDOR, |
| 1979 | .idVendor = 0x0930, |
| 1980 | .bInterfaceClass = USB_CLASS_COMM, |
| 1981 | .bInterfaceSubClass = USB_CDC_SUBCLASS_NCM, |
| 1982 | .bInterfaceProtocol = USB_CDC_PROTO_NONE, |
| 1983 | .driver_info = (unsigned long) &wwan_info, |
| 1984 | }, |
| 1985 | |
Bjørn Mork | 1f84eab | 2013-02-27 03:08:58 +0000 | [diff] [blame] | 1986 | /* tag Huawei devices as wwan */ |
| 1987 | { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, |
| 1988 | USB_CLASS_COMM, |
| 1989 | USB_CDC_SUBCLASS_NCM, |
| 1990 | USB_CDC_PROTO_NONE), |
| 1991 | .driver_info = (unsigned long)&wwan_info, |
| 1992 | }, |
| 1993 | |
Wei Shuai | 2f62d5a | 2013-01-21 06:00:32 +0000 | [diff] [blame] | 1994 | /* Infineon(now Intel) HSPA Modem platform */ |
| 1995 | { USB_DEVICE_AND_INTERFACE_INFO(0x1519, 0x0443, |
| 1996 | USB_CLASS_COMM, |
| 1997 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 1998 | .driver_info = (unsigned long)&wwan_noarp_info, |
| 1999 | }, |
| 2000 | |
Aleksander Morgado | 3b638f0 | 2017-08-25 15:39:16 +0200 | [diff] [blame] | 2001 | /* u-blox TOBY-L4 */ |
| 2002 | { USB_DEVICE_AND_INTERFACE_INFO(0x1546, 0x1010, |
| 2003 | USB_CLASS_COMM, |
| 2004 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 2005 | .driver_info = (unsigned long)&wwan_info, |
| 2006 | }, |
| 2007 | |
Dan Williams | f94898e | 2012-07-24 08:43:22 +0000 | [diff] [blame] | 2008 | /* Generic CDC-NCM devices */ |
| 2009 | { USB_INTERFACE_INFO(USB_CLASS_COMM, |
| 2010 | USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| 2011 | .driver_info = (unsigned long)&cdc_ncm_info, |
| 2012 | }, |
| 2013 | { |
| 2014 | }, |
| 2015 | }; |
| 2016 | MODULE_DEVICE_TABLE(usb, cdc_devs); |
| 2017 | |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 2018 | static struct usb_driver cdc_ncm_driver = { |
| 2019 | .name = "cdc_ncm", |
| 2020 | .id_table = cdc_devs, |
Bjørn Mork | 085e50e | 2013-11-01 11:16:50 +0100 | [diff] [blame] | 2021 | .probe = usbnet_probe, |
| 2022 | .disconnect = usbnet_disconnect, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 2023 | .suspend = usbnet_suspend, |
| 2024 | .resume = usbnet_resume, |
Stefan Metzmacher | 85e3c65 | 2011-06-01 02:01:41 +0000 | [diff] [blame] | 2025 | .reset_resume = usbnet_resume, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 2026 | .supports_autosuspend = 1, |
Sarah Sharp | e1f12eb | 2012-04-23 10:08:51 -0700 | [diff] [blame] | 2027 | .disable_hub_initiated_lpm = 1, |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 2028 | }; |
| 2029 | |
Greg Kroah-Hartman | d632eb1 | 2011-11-18 09:44:20 -0800 | [diff] [blame] | 2030 | module_usb_driver(cdc_ncm_driver); |
Alexey Orishko | 900d495 | 2010-11-29 23:23:28 +0000 | [diff] [blame] | 2031 | |
| 2032 | MODULE_AUTHOR("Hans Petter Selasky"); |
| 2033 | MODULE_DESCRIPTION("USB CDC NCM host driver"); |
| 2034 | MODULE_LICENSE("Dual BSD/GPL"); |