1 /* 2 * Copyright (c) 2014-2018 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /*======================================================================== 20 21 \file epping_txrx.c 22 23 \brief WLAN End Point Ping test tool implementation 24 25 ========================================================================*/ 26 27 /*-------------------------------------------------------------------------- 28 Include Files 29 ------------------------------------------------------------------------*/ 30 #include <cds_api.h> 31 #include <cds_sched.h> 32 #include <linux/etherdevice.h> 33 #include <linux/firmware.h> 34 #include <wni_api.h> 35 #include <wlan_ptt_sock_svc.h> 36 #include <linux/wireless.h> 37 #include <net/cfg80211.h> 38 #include <pld_common.h> 39 #include <linux/rtnetlink.h> 40 #include <linux/semaphore.h> 41 #include <linux/ctype.h> 42 #include "epping_main.h" 43 #include "epping_internal.h" 44 45 static int epping_start_adapter(epping_adapter_t *adapter); 46 static void epping_stop_adapter(epping_adapter_t *adapter); 47 48 static void epping_timer_expire(void *data) 49 { 50 struct net_device *dev = (struct net_device *)data; 51 epping_adapter_t *adapter; 52 53 if (dev == NULL) { 54 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 55 "%s: netdev = NULL", __func__); 56 return; 57 } 58 59 adapter = netdev_priv(dev); 60 if (adapter == NULL) { 61 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 62 "%s: adapter = NULL", __func__); 63 return; 64 } 65 adapter->epping_timer_state = EPPING_TX_TIMER_STOPPED; 66 epping_tx_timer_expire(adapter); 67 } 68 69 static int epping_ndev_open(struct net_device *dev) 70 { 71 epping_adapter_t *adapter; 72 int ret = 0; 73 74 adapter = netdev_priv(dev); 75 epping_start_adapter(adapter); 76 return ret; 77 } 78 79 static int epping_ndev_stop(struct net_device *dev) 80 { 81 epping_adapter_t *adapter; 82 int ret = 0; 83 84 adapter = netdev_priv(dev); 85 if (NULL == adapter) { 86 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 87 "%s: EPPING adapter context is Null", __func__); 88 ret = -ENODEV; 89 goto end; 90 } 91 epping_stop_adapter(adapter); 92 end: 93 return ret; 94 } 95 96 static void epping_ndev_uninit(struct net_device *dev) 97 { 98 epping_adapter_t *adapter; 99 100 adapter = netdev_priv(dev); 101 if (NULL == adapter) { 102 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 103 "%s: EPPING adapter context is Null", __func__); 104 goto end; 105 } 106 epping_stop_adapter(adapter); 107 end: 108 return; 109 } 110 111 static void epping_tx_queue_timeout(struct net_device *dev) 112 { 113 epping_adapter_t *adapter; 114 115 adapter = netdev_priv(dev); 116 if (NULL == adapter) { 117 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 118 "%s: EPPING adapter context is Null", __func__); 119 goto end; 120 } 121 122 EPPING_LOG(QDF_TRACE_LEVEL_ERROR, 123 "%s: Transmission timeout occurred, adapter->started= %d", 124 __func__, adapter->started); 125 126 /* Getting here implies we disabled the TX queues 127 * for too long. Since this is epping 128 * (not because of disassociation or low resource scenarios), 129 * try to restart the queue 130 */ 131 if (adapter->started) 132 netif_wake_queue(dev); 133 end: 134 return; 135 136 } 137 138 static netdev_tx_t epping_hard_start_xmit(struct sk_buff *skb, 139 struct net_device *dev) 140 { 141 epping_adapter_t *adapter; 142 int ret = 0; 143 144 adapter = netdev_priv(dev); 145 if (NULL == adapter) { 146 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 147 "%s: EPPING adapter context is Null", __func__); 148 kfree_skb(skb); 149 ret = -ENODEV; 150 goto end; 151 } 152 ret = epping_tx_send(skb, adapter); 153 end: 154 return NETDEV_TX_OK; 155 } 156 157 static struct net_device_stats *epping_get_stats(struct net_device *dev) 158 { 159 epping_adapter_t *adapter = netdev_priv(dev); 160 161 if (NULL == adapter) { 162 EPPING_LOG(QDF_TRACE_LEVEL_ERROR, "%s: adapter = NULL", 163 __func__); 164 return NULL; 165 } 166 167 return &adapter->stats; 168 } 169 170 static int epping_ndev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 171 { 172 epping_adapter_t *adapter; 173 int ret = 0; 174 175 adapter = netdev_priv(dev); 176 if (NULL == adapter) { 177 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 178 "%s: EPPING adapter context is Null", __func__); 179 ret = -ENODEV; 180 goto end; 181 } 182 if (dev != adapter->dev) { 183 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 184 "%s: HDD adapter/dev inconsistency", __func__); 185 ret = -ENODEV; 186 goto end; 187 } 188 189 if ((!ifr) || (!ifr->ifr_data)) { 190 ret = -EINVAL; 191 goto end; 192 } 193 194 switch (cmd) { 195 case (SIOCDEVPRIVATE + 1): 196 EPPING_LOG(QDF_TRACE_LEVEL_ERROR, 197 "%s: do not support ioctl %d (SIOCDEVPRIVATE + 1)", 198 __func__, cmd); 199 break; 200 default: 201 EPPING_LOG(QDF_TRACE_LEVEL_ERROR, "%s: unknown ioctl %d", 202 __func__, cmd); 203 ret = -EINVAL; 204 break; 205 } 206 207 end: 208 return ret; 209 } 210 211 static int epping_set_mac_address(struct net_device *dev, void *addr) 212 { 213 epping_adapter_t *adapter = netdev_priv(dev); 214 struct sockaddr *psta_mac_addr = addr; 215 qdf_mem_copy(&adapter->macAddressCurrent, 216 psta_mac_addr->sa_data, ETH_ALEN); 217 qdf_mem_copy(dev->dev_addr, psta_mac_addr->sa_data, ETH_ALEN); 218 return 0; 219 } 220 221 static void epping_stop_adapter(epping_adapter_t *adapter) 222 { 223 qdf_device_t qdf_ctx = cds_get_context(QDF_MODULE_ID_QDF_DEVICE); 224 225 if (!qdf_ctx) { 226 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 227 "%s: qdf_ctx is NULL\n", __func__); 228 return; 229 } 230 231 if (adapter && adapter->started) { 232 EPPING_LOG(LOG1, FL("Disabling queues")); 233 netif_tx_disable(adapter->dev); 234 netif_carrier_off(adapter->dev); 235 adapter->started = false; 236 pld_request_bus_bandwidth(qdf_ctx->dev, 237 PLD_BUS_WIDTH_LOW); 238 } 239 } 240 241 static int epping_start_adapter(epping_adapter_t *adapter) 242 { 243 qdf_device_t qdf_ctx = cds_get_context(QDF_MODULE_ID_QDF_DEVICE); 244 245 if (!qdf_ctx) { 246 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 247 "%s: qdf_ctx is NULL", __func__); 248 return -EINVAL; 249 } 250 251 if (!adapter) { 252 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 253 "%s: adapter= NULL\n", __func__); 254 return -EINVAL; 255 } 256 if (!adapter->started) { 257 pld_request_bus_bandwidth(qdf_ctx->dev, 258 PLD_BUS_WIDTH_HIGH); 259 netif_carrier_on(adapter->dev); 260 EPPING_LOG(LOG1, FL("Enabling queues")); 261 netif_tx_start_all_queues(adapter->dev); 262 adapter->started = true; 263 } else { 264 EPPING_LOG(QDF_TRACE_LEVEL_WARN, 265 "%s: adapter %pK already started\n", __func__, 266 adapter); 267 } 268 return 0; 269 } 270 271 static int epping_register_adapter(epping_adapter_t *adapter) 272 { 273 int ret = 0; 274 275 ret = register_netdev(adapter->dev); 276 if (ret != 0) { 277 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 278 "%s: unable to register device\n", 279 adapter->dev->name); 280 } else { 281 adapter->registered = true; 282 } 283 return ret; 284 } 285 286 static void epping_unregister_adapter(epping_adapter_t *adapter) 287 { 288 if (adapter) { 289 epping_stop_adapter(adapter); 290 if (adapter->registered) { 291 unregister_netdev(adapter->dev); 292 adapter->registered = false; 293 } 294 } else { 295 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 296 "%s: adapter = NULL, unable to unregister device\n", 297 __func__); 298 } 299 } 300 301 void epping_destroy_adapter(epping_adapter_t *adapter) 302 { 303 struct net_device *dev = NULL; 304 epping_context_t *pEpping_ctx; 305 306 if (!adapter || !adapter->pEpping_ctx) { 307 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 308 "%s: adapter = NULL\n", __func__); 309 return; 310 } 311 312 dev = adapter->dev; 313 pEpping_ctx = adapter->pEpping_ctx; 314 epping_unregister_adapter(adapter); 315 316 qdf_spinlock_destroy(&adapter->data_lock); 317 qdf_timer_free(&adapter->epping_timer); 318 adapter->epping_timer_state = EPPING_TX_TIMER_STOPPED; 319 320 while (qdf_nbuf_queue_len(&adapter->nodrop_queue)) { 321 qdf_nbuf_t tmp_nbuf = NULL; 322 tmp_nbuf = qdf_nbuf_queue_remove(&adapter->nodrop_queue); 323 if (tmp_nbuf) 324 qdf_nbuf_free(tmp_nbuf); 325 } 326 327 free_netdev(dev); 328 if (!pEpping_ctx) 329 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 330 "%s: pEpping_ctx = NULL\n", __func__); 331 else 332 pEpping_ctx->epping_adapter = NULL; 333 } 334 335 static struct net_device_ops epping_drv_ops = { 336 .ndo_open = epping_ndev_open, 337 .ndo_stop = epping_ndev_stop, 338 .ndo_uninit = epping_ndev_uninit, 339 .ndo_start_xmit = epping_hard_start_xmit, 340 .ndo_tx_timeout = epping_tx_queue_timeout, 341 .ndo_get_stats = epping_get_stats, 342 .ndo_do_ioctl = epping_ndev_ioctl, 343 .ndo_set_mac_address = epping_set_mac_address, 344 .ndo_select_queue = NULL, 345 }; 346 347 #define EPPING_TX_QUEUE_MAX_LEN 128 /* need to be power of 2 */ 348 349 epping_adapter_t *epping_add_adapter(epping_context_t *pEpping_ctx, 350 tSirMacAddr macAddr, 351 enum QDF_OPMODE device_mode) 352 { 353 struct net_device *dev; 354 epping_adapter_t *adapter; 355 356 dev = alloc_netdev(sizeof(epping_adapter_t), "wifi%d", 357 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) 358 NET_NAME_UNKNOWN, 359 #endif 360 ether_setup); 361 if (dev == NULL) { 362 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 363 "%s: Cannot allocate epping_adapter_t\n", __func__); 364 return NULL; 365 } 366 367 adapter = netdev_priv(dev); 368 qdf_mem_zero(adapter, sizeof(*adapter)); 369 adapter->dev = dev; 370 adapter->pEpping_ctx = pEpping_ctx; 371 adapter->device_mode = device_mode; /* station, SAP, etc */ 372 qdf_mem_copy(dev->dev_addr, (void *)macAddr, sizeof(tSirMacAddr)); 373 qdf_mem_copy(adapter->macAddressCurrent.bytes, 374 macAddr, sizeof(tSirMacAddr)); 375 qdf_spinlock_create(&adapter->data_lock); 376 qdf_nbuf_queue_init(&adapter->nodrop_queue); 377 adapter->epping_timer_state = EPPING_TX_TIMER_STOPPED; 378 qdf_timer_init(epping_get_qdf_ctx(), &adapter->epping_timer, 379 epping_timer_expire, dev, QDF_TIMER_TYPE_SW); 380 dev->type = ARPHRD_IEEE80211; 381 dev->netdev_ops = &epping_drv_ops; 382 dev->watchdog_timeo = 5 * HZ; /* XXX */ 383 dev->tx_queue_len = EPPING_TXBUF - 1; /* 1 for mgmt frame */ 384 if (epping_register_adapter(adapter) == 0) { 385 EPPING_LOG(LOG1, FL("Disabling queues")); 386 netif_tx_disable(dev); 387 netif_carrier_off(dev); 388 return adapter; 389 } else { 390 epping_destroy_adapter(adapter); 391 return NULL; 392 } 393 } 394 395 int epping_connect_service(epping_context_t *pEpping_ctx) 396 { 397 int status, i; 398 struct htc_service_connect_req connect; 399 struct htc_service_connect_resp response; 400 401 qdf_mem_zero(&connect, sizeof(connect)); 402 qdf_mem_zero(&response, sizeof(response)); 403 404 /* these fields are the same for all service endpoints */ 405 connect.EpCallbacks.pContext = pEpping_ctx; 406 connect.EpCallbacks.EpTxCompleteMultiple = NULL; 407 connect.EpCallbacks.EpRecv = epping_rx; 408 /* epping_tx_complete use Multiple version */ 409 connect.EpCallbacks.EpTxComplete = epping_tx_complete; 410 connect.MaxSendQueueDepth = 64; 411 412 #ifdef HIF_SDIO 413 connect.EpCallbacks.EpRecvRefill = epping_refill; 414 connect.EpCallbacks.EpSendFull = 415 epping_tx_queue_full /* ar6000_tx_queue_full */; 416 #elif defined(HIF_USB) || defined(HIF_PCI) 417 connect.EpCallbacks.EpRecvRefill = NULL /* provided by HIF */; 418 connect.EpCallbacks.EpSendFull = NULL /* provided by HIF */; 419 /* disable flow control for hw flow control */ 420 connect.ConnectionFlags |= HTC_CONNECT_FLAGS_DISABLE_CREDIT_FLOW_CTRL; 421 #endif 422 423 /* connect to service */ 424 connect.service_id = WMI_DATA_BE_SVC; 425 status = htc_connect_service(pEpping_ctx->HTCHandle, &connect, &response); 426 if (status != EOK) { 427 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 428 "Failed to connect to Endpoint Ping BE service status:%d\n", 429 status); 430 return status; 431 } else { 432 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 433 "eppingtest BE endpoint:%d\n", response.Endpoint); 434 } 435 pEpping_ctx->EppingEndpoint[0] = response.Endpoint; 436 437 #if defined(HIF_PCI) || defined(HIF_USB) 438 connect.service_id = WMI_DATA_BK_SVC; 439 status = htc_connect_service(pEpping_ctx->HTCHandle, &connect, &response); 440 if (status != EOK) { 441 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 442 "Failed to connect to Endpoint Ping BK service status:%d\n", 443 status); 444 return status; 445 } else { 446 EPPING_LOG(QDF_TRACE_LEVEL_FATAL, 447 "eppingtest BK endpoint:%d\n", response.Endpoint); 448 } 449 pEpping_ctx->EppingEndpoint[1] = response.Endpoint; 450 /* Since we do not create other two SVC use BK endpoint 451 * for rest ACs (2, 3) */ 452 for (i = 2; i < EPPING_MAX_NUM_EPIDS; i++) { 453 pEpping_ctx->EppingEndpoint[i] = response.Endpoint; 454 } 455 #else 456 /* we only use one endpoint for high latenance bus. 457 * Map all AC's EPIDs to the same endpoint ID returned by HTC */ 458 for (i = 0; i < EPPING_MAX_NUM_EPIDS; i++) { 459 pEpping_ctx->EppingEndpoint[i] = response.Endpoint; 460 } 461 #endif 462 return 0; 463 } 464