Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2012-2015 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * DOC: wlan_hdd_tx_rx.c |
| 30 | * |
| 31 | * Linux HDD Tx/RX APIs |
| 32 | */ |
| 33 | |
| 34 | #include <wlan_hdd_tx_rx.h> |
| 35 | #include <wlan_hdd_softap_tx_rx.h> |
| 36 | #include <wlan_hdd_napi.h> |
| 37 | #include <linux/netdevice.h> |
| 38 | #include <linux/skbuff.h> |
| 39 | #include <linux/etherdevice.h> |
| 40 | #include <cds_sched.h> |
| 41 | |
| 42 | #include <wlan_hdd_p2p.h> |
| 43 | #include <linux/wireless.h> |
| 44 | #include <net/cfg80211.h> |
| 45 | #include <net/ieee80211_radiotap.h> |
| 46 | #include "sap_api.h" |
| 47 | #include "wlan_hdd_wmm.h" |
| 48 | |
| 49 | #ifdef FEATURE_WLAN_TDLS |
| 50 | #include "wlan_hdd_tdls.h" |
| 51 | #endif |
| 52 | #include <wlan_hdd_ipa.h> |
| 53 | |
| 54 | #include "wlan_hdd_ocb.h" |
| 55 | |
| 56 | #include "wlan_hdd_lro.h" |
| 57 | |
| 58 | #ifdef FEATURE_WLAN_DIAG_SUPPORT |
| 59 | #define HDD_EAPOL_ETHER_TYPE (0x888E) |
| 60 | #define HDD_EAPOL_ETHER_TYPE_OFFSET (12) |
| 61 | #define HDD_EAPOL_PACKET_TYPE_OFFSET (15) |
| 62 | #define HDD_EAPOL_KEY_INFO_OFFSET (19) |
| 63 | #define HDD_EAPOL_DEST_MAC_OFFSET (0) |
| 64 | #define HDD_EAPOL_SRC_MAC_OFFSET (6) |
| 65 | #endif /* FEATURE_WLAN_DIAG_SUPPORT */ |
| 66 | |
| 67 | const uint8_t hdd_wmm_ac_to_highest_up[] = { |
| 68 | SME_QOS_WMM_UP_RESV, |
| 69 | SME_QOS_WMM_UP_EE, |
| 70 | SME_QOS_WMM_UP_VI, |
| 71 | SME_QOS_WMM_UP_NC |
| 72 | }; |
| 73 | |
| 74 | /* Mapping Linux AC interpretation to SME AC. */ |
| 75 | const uint8_t hdd_qdisc_ac_to_tl_ac[] = { |
| 76 | SME_AC_VO, |
| 77 | SME_AC_VI, |
| 78 | SME_AC_BE, |
| 79 | SME_AC_BK, |
| 80 | }; |
| 81 | |
| 82 | #ifdef QCA_LL_LEGACY_TX_FLOW_CONTROL |
| 83 | /** |
| 84 | * hdd_tx_resume_timer_expired_handler() - TX Q resume timer handler |
| 85 | * @adapter_context: pointer to vdev adapter |
| 86 | * |
| 87 | * If Blocked OS Q is not resumed during timeout period, to prevent |
| 88 | * permanent stall, resume OS Q forcefully. |
| 89 | * |
| 90 | * Return: None |
| 91 | */ |
| 92 | void hdd_tx_resume_timer_expired_handler(void *adapter_context) |
| 93 | { |
| 94 | hdd_adapter_t *pAdapter = (hdd_adapter_t *) adapter_context; |
| 95 | |
| 96 | if (!pAdapter) { |
| 97 | /* INVALID ARG */ |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | hddLog(LOG1, FL("Enabling queues")); |
| 102 | wlan_hdd_netif_queue_control(pAdapter, WLAN_WAKE_ALL_NETIF_QUEUE, |
| 103 | WLAN_CONTROL_PATH); |
| 104 | return; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * hdd_tx_resume_cb() - Resume OS TX Q. |
| 109 | * @adapter_context: pointer to vdev apdapter |
| 110 | * @tx_resume: TX Q resume trigger |
| 111 | * |
| 112 | * Q was stopped due to WLAN TX path low resource condition |
| 113 | * |
| 114 | * Return: None |
| 115 | */ |
| 116 | void hdd_tx_resume_cb(void *adapter_context, bool tx_resume) |
| 117 | { |
| 118 | hdd_adapter_t *pAdapter = (hdd_adapter_t *) adapter_context; |
| 119 | hdd_station_ctx_t *hdd_sta_ctx = NULL; |
| 120 | |
| 121 | if (!pAdapter) { |
| 122 | /* INVALID ARG */ |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(pAdapter); |
| 127 | |
| 128 | /* Resume TX */ |
| 129 | if (true == tx_resume) { |
| 130 | if (CDF_TIMER_STATE_STOPPED != |
| 131 | cdf_mc_timer_get_current_state(&pAdapter-> |
| 132 | tx_flow_control_timer)) { |
| 133 | cdf_mc_timer_stop(&pAdapter->tx_flow_control_timer); |
| 134 | } |
| 135 | if (cdf_unlikely(hdd_sta_ctx->hdd_ReassocScenario)) { |
| 136 | hddLog(LOGW, |
| 137 | FL("flow control, tx queues un-pause avoided as we are in REASSOCIATING state")); |
| 138 | return; |
| 139 | } |
| 140 | hddLog(LOG1, FL("Enabling queues")); |
| 141 | wlan_hdd_netif_queue_control(pAdapter, |
| 142 | WLAN_WAKE_ALL_NETIF_QUEUE, |
| 143 | WLAN_DATA_FLOW_CONTROL); |
| 144 | } |
| 145 | #if defined(CONFIG_PER_VDEV_TX_DESC_POOL) |
| 146 | else if (false == tx_resume) { /* Pause TX */ |
| 147 | hddLog(LOG1, FL("Disabling queues")); |
| 148 | wlan_hdd_netif_queue_control(pAdapter, |
| 149 | WLAN_STOP_ALL_NETIF_QUEUE, |
| 150 | WLAN_DATA_FLOW_CONTROL); |
| 151 | if (CDF_TIMER_STATE_STOPPED == |
| 152 | cdf_mc_timer_get_current_state(&pAdapter-> |
| 153 | tx_flow_control_timer)) { |
| 154 | CDF_STATUS status; |
| 155 | status = |
| 156 | cdf_mc_timer_start(&pAdapter->tx_flow_control_timer, |
| 157 | WLAN_HDD_TX_FLOW_CONTROL_OS_Q_BLOCK_TIME); |
| 158 | if (!CDF_IS_STATUS_SUCCESS(status)) |
| 159 | CDF_TRACE(CDF_MODULE_ID_HDD, |
| 160 | CDF_TRACE_LEVEL_ERROR, |
| 161 | "%s: Failed to start tx_flow_control_timer", |
| 162 | __func__); |
| 163 | else |
| 164 | pAdapter->hdd_stats.hddTxRxStats.txflow_timer_cnt++; |
| 165 | } |
| 166 | pAdapter->hdd_stats.hddTxRxStats.txflow_pause_cnt++; |
| 167 | pAdapter->hdd_stats.hddTxRxStats.is_txflow_paused = true; |
| 168 | } |
| 169 | #endif |
| 170 | |
| 171 | return; |
| 172 | } |
| 173 | |
| 174 | /** |
| 175 | * hdd_register_tx_flow_control() - Register TX Flow control |
| 176 | * @adapter: adapter handle |
| 177 | * @timer_callback: timer callback |
| 178 | * @flow_control_fp: txrx flow control |
| 179 | * |
| 180 | * Return: none |
| 181 | */ |
| 182 | void hdd_register_tx_flow_control(hdd_adapter_t *adapter, |
| 183 | cdf_mc_timer_callback_t timer_callback, |
| 184 | ol_txrx_tx_flow_control_fp flow_control_fp) |
| 185 | { |
| 186 | if (adapter->tx_flow_timer_initialized == false) { |
| 187 | cdf_mc_timer_init(&adapter->tx_flow_control_timer, |
| 188 | CDF_TIMER_TYPE_SW, |
| 189 | timer_callback, |
| 190 | adapter); |
| 191 | adapter->tx_flow_timer_initialized = true; |
| 192 | } |
| 193 | ol_txrx_register_tx_flow_control(adapter->sessionId, |
| 194 | flow_control_fp, |
| 195 | adapter); |
| 196 | |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * hdd_deregister_tx_flow_control() - Deregister TX Flow control |
| 201 | * @adapter: adapter handle |
| 202 | * |
| 203 | * Return: none |
| 204 | */ |
| 205 | void hdd_deregister_tx_flow_control(hdd_adapter_t *adapter) |
| 206 | { |
| 207 | ol_txrx_deregister_tx_flow_control_cb(adapter->sessionId); |
| 208 | if (adapter->tx_flow_timer_initialized == true) { |
| 209 | cdf_mc_timer_stop(&adapter->tx_flow_control_timer); |
| 210 | cdf_mc_timer_destroy(&adapter->tx_flow_control_timer); |
| 211 | adapter->tx_flow_timer_initialized = false; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * hdd_get_tx_resource() - check tx resources and take action |
| 217 | * @adapter: adapter handle |
| 218 | * @STAId: station id |
| 219 | * @timer_value: timer value |
| 220 | * |
| 221 | * Return: none |
| 222 | */ |
| 223 | void hdd_get_tx_resource(hdd_adapter_t *adapter, |
| 224 | uint8_t STAId, uint16_t timer_value) |
| 225 | { |
| 226 | if (false == |
| 227 | ol_txrx_get_tx_resource(STAId, |
| 228 | adapter->tx_flow_low_watermark, |
| 229 | adapter->tx_flow_high_watermark_offset)) { |
| 230 | hdd_info("Disabling queues lwm %d hwm offset %d", |
| 231 | adapter->tx_flow_low_watermark, |
| 232 | adapter->tx_flow_high_watermark_offset); |
| 233 | wlan_hdd_netif_queue_control(adapter, WLAN_STOP_ALL_NETIF_QUEUE, |
| 234 | WLAN_DATA_FLOW_CONTROL); |
| 235 | if ((adapter->tx_flow_timer_initialized == true) && |
| 236 | (CDF_TIMER_STATE_STOPPED == |
| 237 | cdf_mc_timer_get_current_state(&adapter-> |
| 238 | tx_flow_control_timer))) { |
| 239 | cdf_mc_timer_start(&adapter->tx_flow_control_timer, |
| 240 | timer_value); |
| 241 | adapter->hdd_stats.hddTxRxStats.txflow_timer_cnt++; |
| 242 | adapter->hdd_stats.hddTxRxStats.txflow_pause_cnt++; |
| 243 | adapter->hdd_stats.hddTxRxStats.is_txflow_paused = true; |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | #endif /* QCA_LL_LEGACY_TX_FLOW_CONTROL */ |
| 249 | |
| 250 | /** |
| 251 | * wlan_hdd_is_eapol() - Function to check if frame is EAPOL or not |
| 252 | * @skb: skb data |
| 253 | * |
| 254 | * This function checks if the frame is an EAPOL frame or not |
| 255 | * |
| 256 | * Return: true (1) if packet is EAPOL |
| 257 | * |
| 258 | */ |
| 259 | static bool wlan_hdd_is_eapol(struct sk_buff *skb) |
| 260 | { |
| 261 | uint16_t ether_type; |
| 262 | |
| 263 | if (!skb) { |
| 264 | hdd_err(FL("skb is NULL")); |
| 265 | return false; |
| 266 | } |
| 267 | |
| 268 | ether_type = (uint16_t)(*(uint16_t *) |
| 269 | (skb->data + HDD_ETHERTYPE_802_1_X_FRAME_OFFSET)); |
| 270 | |
| 271 | if (ether_type == CDF_SWAP_U16(HDD_ETHERTYPE_802_1_X)) |
| 272 | return true; |
| 273 | |
| 274 | return false; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * wlan_hdd_is_eapol_or_wai() - Check if frame is EAPOL or WAPI |
| 279 | * @skb: skb data |
| 280 | * |
| 281 | * This function checks if the frame is EAPOL or WAPI. |
| 282 | * single routine call will check for both types, thus avoiding |
| 283 | * data path performance penalty. |
| 284 | * |
| 285 | * Return: true (1) if packet is EAPOL or WAPI |
| 286 | * |
| 287 | */ |
| 288 | static bool wlan_hdd_is_eapol_or_wai(struct sk_buff *skb) |
| 289 | { |
| 290 | uint16_t ether_type; |
| 291 | |
| 292 | if (!skb) { |
| 293 | hdd_err(FL("skb is NULL")); |
| 294 | return false; |
| 295 | } |
| 296 | |
| 297 | ether_type = (uint16_t)(*(uint16_t *) |
| 298 | (skb->data + HDD_ETHERTYPE_802_1_X_FRAME_OFFSET)); |
| 299 | |
| 300 | if (ether_type == CDF_SWAP_U16(HDD_ETHERTYPE_802_1_X) || |
| 301 | ether_type == CDF_SWAP_U16(HDD_ETHERTYPE_WAI)) |
| 302 | return true; |
| 303 | |
| 304 | /* No error msg handled since this will happen often */ |
| 305 | return false; |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * hdd_hard_start_xmit() - Transmit a frame |
| 310 | * @skb: pointer to OS packet (sk_buff) |
| 311 | * @dev: pointer to network device |
| 312 | * |
| 313 | * Function registered with the Linux OS for transmitting |
| 314 | * packets. This version of the function directly passes |
| 315 | * the packet to Transport Layer. |
| 316 | * |
| 317 | * Return: Always returns NETDEV_TX_OK |
| 318 | */ |
| 319 | int hdd_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 320 | { |
| 321 | CDF_STATUS status; |
| 322 | sme_ac_enum_type ac; |
| 323 | sme_QosWmmUpType up; |
| 324 | hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev); |
| 325 | bool granted; |
| 326 | uint8_t STAId = WLAN_MAX_STA_COUNT; |
| 327 | hdd_station_ctx_t *pHddStaCtx = &pAdapter->sessionCtx.station; |
| 328 | uint8_t proto_type = 0; |
| 329 | #ifdef QCA_PKT_PROTO_TRACE |
| 330 | hdd_context_t *hddCtxt = WLAN_HDD_GET_CTX(pAdapter); |
| 331 | #endif /* QCA_PKT_PROTO_TRACE */ |
| 332 | |
| 333 | #ifdef QCA_WIFI_FTM |
| 334 | if (hdd_get_conparam() == CDF_FTM_MODE) { |
| 335 | kfree_skb(skb); |
| 336 | return NETDEV_TX_OK; |
| 337 | } |
| 338 | #endif |
| 339 | |
| 340 | ++pAdapter->hdd_stats.hddTxRxStats.txXmitCalled; |
| 341 | |
| 342 | if (WLAN_HDD_IBSS == pAdapter->device_mode) { |
| 343 | struct cdf_mac_addr *pDestMacAddress = |
| 344 | (struct cdf_mac_addr *) skb->data; |
| 345 | |
| 346 | if (CDF_STATUS_SUCCESS != |
| 347 | hdd_ibss_get_sta_id(&pAdapter->sessionCtx.station, |
| 348 | pDestMacAddress, &STAId)) |
| 349 | STAId = HDD_WLAN_INVALID_STA_ID; |
| 350 | |
| 351 | if ((STAId == HDD_WLAN_INVALID_STA_ID) && |
| 352 | (cdf_is_macaddr_broadcast(pDestMacAddress) || |
| 353 | cdf_is_macaddr_group(pDestMacAddress))) { |
| 354 | STAId = IBSS_BROADCAST_STAID; |
| 355 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, |
| 356 | CDF_TRACE_LEVEL_INFO_LOW, "%s: BC/MC packet", |
| 357 | __func__); |
| 358 | } else if (STAId == HDD_WLAN_INVALID_STA_ID) { |
| 359 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_WARN, |
| 360 | "%s: Received Unicast frame with invalid staID", |
| 361 | __func__); |
| 362 | ++pAdapter->stats.tx_dropped; |
| 363 | ++pAdapter->hdd_stats.hddTxRxStats.txXmitDropped; |
| 364 | kfree_skb(skb); |
| 365 | return NETDEV_TX_OK; |
| 366 | } |
| 367 | } else { |
| 368 | STAId = pHddStaCtx->conn_info.staId[0]; |
| 369 | } |
| 370 | |
| 371 | |
| 372 | hdd_get_tx_resource(pAdapter, STAId, |
| 373 | WLAN_HDD_TX_FLOW_CONTROL_OS_Q_BLOCK_TIME); |
| 374 | |
| 375 | /* Get TL AC corresponding to Qdisc queue index/AC. */ |
| 376 | ac = hdd_qdisc_ac_to_tl_ac[skb->queue_mapping]; |
| 377 | |
| 378 | if (!(NBUF_OWNER_ID(skb) == IPA_NBUF_OWNER_ID)) { |
| 379 | /* Check if the buffer has enough header room */ |
| 380 | skb = skb_unshare(skb, GFP_ATOMIC); |
| 381 | if (!skb) |
| 382 | goto drop_pkt; |
| 383 | |
| 384 | if (skb_headroom(skb) < dev->hard_header_len) { |
| 385 | struct sk_buff *tmp; |
| 386 | tmp = skb; |
| 387 | skb = skb_realloc_headroom(tmp, dev->hard_header_len); |
| 388 | dev_kfree_skb(tmp); |
| 389 | if (!skb) |
| 390 | goto drop_pkt; |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | /* user priority from IP header, which is already extracted and set from |
| 395 | * select_queue call back function |
| 396 | */ |
| 397 | up = skb->priority; |
| 398 | |
| 399 | ++pAdapter->hdd_stats.hddTxRxStats.txXmitClassifiedAC[ac]; |
| 400 | #ifdef HDD_WMM_DEBUG |
| 401 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_FATAL, |
| 402 | "%s: Classified as ac %d up %d", __func__, ac, up); |
| 403 | #endif /* HDD_WMM_DEBUG */ |
| 404 | |
| 405 | if (HDD_PSB_CHANGED == pAdapter->psbChanged) { |
| 406 | /* Function which will determine acquire admittance for a |
| 407 | * WMM AC is required or not based on psb configuration done |
| 408 | * in the framework |
| 409 | */ |
| 410 | hdd_wmm_acquire_access_required(pAdapter, ac); |
| 411 | } |
| 412 | /* |
| 413 | * Make sure we already have access to this access category |
| 414 | * or it is EAPOL or WAPI frame during initial authentication which |
| 415 | * can have artifically boosted higher qos priority. |
| 416 | */ |
| 417 | |
| 418 | if (((pAdapter->psbChanged & (1 << ac)) && |
| 419 | likely(pAdapter->hddWmmStatus.wmmAcStatus[ac]. |
| 420 | wmmAcAccessAllowed)) || |
| 421 | ((pHddStaCtx->conn_info.uIsAuthenticated == false) && |
| 422 | wlan_hdd_is_eapol_or_wai(skb))) { |
| 423 | granted = true; |
| 424 | } else { |
| 425 | status = hdd_wmm_acquire_access(pAdapter, ac, &granted); |
| 426 | pAdapter->psbChanged |= (1 << ac); |
| 427 | } |
| 428 | |
| 429 | if (!granted) { |
| 430 | bool isDefaultAc = false; |
| 431 | /* ADDTS request for this AC is sent, for now |
| 432 | * send this packet through next avaiable lower |
| 433 | * Access category until ADDTS negotiation completes. |
| 434 | */ |
| 435 | while (!likely |
| 436 | (pAdapter->hddWmmStatus.wmmAcStatus[ac]. |
| 437 | wmmAcAccessAllowed)) { |
| 438 | switch (ac) { |
| 439 | case SME_AC_VO: |
| 440 | ac = SME_AC_VI; |
| 441 | up = SME_QOS_WMM_UP_VI; |
| 442 | break; |
| 443 | case SME_AC_VI: |
| 444 | ac = SME_AC_BE; |
| 445 | up = SME_QOS_WMM_UP_BE; |
| 446 | break; |
| 447 | case SME_AC_BE: |
| 448 | ac = SME_AC_BK; |
| 449 | up = SME_QOS_WMM_UP_BK; |
| 450 | break; |
| 451 | default: |
| 452 | ac = SME_AC_BK; |
| 453 | up = SME_QOS_WMM_UP_BK; |
| 454 | isDefaultAc = true; |
| 455 | break; |
| 456 | } |
| 457 | if (isDefaultAc) |
| 458 | break; |
| 459 | } |
| 460 | skb->priority = up; |
| 461 | skb->queue_mapping = hdd_linux_up_to_ac_map[up]; |
| 462 | } |
| 463 | |
| 464 | wlan_hdd_log_eapol(skb, |
| 465 | WIFI_EVENT_DRIVER_EAPOL_FRAME_TRANSMIT_REQUESTED); |
| 466 | |
| 467 | #ifdef QCA_PKT_PROTO_TRACE |
| 468 | if ((hddCtxt->config->gEnableDebugLog & CDS_PKT_TRAC_TYPE_EAPOL) || |
| 469 | (hddCtxt->config->gEnableDebugLog & CDS_PKT_TRAC_TYPE_DHCP)) { |
| 470 | proto_type = cds_pkt_get_proto_type(skb, |
| 471 | hddCtxt->config-> |
| 472 | gEnableDebugLog, 0); |
| 473 | if (CDS_PKT_TRAC_TYPE_EAPOL & proto_type) { |
| 474 | cds_pkt_trace_buf_update("ST:T:EPL"); |
| 475 | } else if (CDS_PKT_TRAC_TYPE_DHCP & proto_type) { |
| 476 | cds_pkt_trace_buf_update("ST:T:DHC"); |
| 477 | } |
| 478 | } |
| 479 | #endif /* QCA_PKT_PROTO_TRACE */ |
| 480 | |
| 481 | pAdapter->stats.tx_bytes += skb->len; |
| 482 | ++pAdapter->stats.tx_packets; |
| 483 | |
| 484 | /* Zero out skb's context buffer for the driver to use */ |
| 485 | cdf_mem_set(skb->cb, sizeof(skb->cb), 0); |
| 486 | NBUF_SET_PACKET_TRACK(skb, NBUF_TX_PKT_DATA_TRACK); |
| 487 | NBUF_UPDATE_TX_PKT_COUNT(skb, NBUF_TX_PKT_HDD); |
| 488 | |
| 489 | cdf_dp_trace_set_track(skb); |
| 490 | DPTRACE(cdf_dp_trace(skb, CDF_DP_TRACE_HDD_PACKET_PTR_RECORD, |
| 491 | (uint8_t *)skb->data, sizeof(skb->data))); |
| 492 | DPTRACE(cdf_dp_trace(skb, CDF_DP_TRACE_HDD_PACKET_RECORD, |
| 493 | (uint8_t *)skb->data, cdf_nbuf_len(skb))); |
| 494 | if (cdf_nbuf_len(skb) > CDF_DP_TRACE_RECORD_SIZE) |
| 495 | DPTRACE(cdf_dp_trace(skb, CDF_DP_TRACE_HDD_PACKET_RECORD, |
| 496 | (uint8_t *)&skb->data[CDF_DP_TRACE_RECORD_SIZE], |
| 497 | (cdf_nbuf_len(skb)-CDF_DP_TRACE_RECORD_SIZE))); |
| 498 | |
| 499 | if (ol_tx_send_data_frame(STAId, (cdf_nbuf_t) skb, |
| 500 | proto_type) != NULL) { |
| 501 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_WARN, |
| 502 | "%s: Failed to send packet to txrx for staid:%d", |
| 503 | __func__, STAId); |
| 504 | goto drop_pkt; |
| 505 | } |
| 506 | dev->trans_start = jiffies; |
| 507 | |
| 508 | return NETDEV_TX_OK; |
| 509 | |
| 510 | drop_pkt: |
| 511 | |
| 512 | DPTRACE(cdf_dp_trace(skb, CDF_DP_TRACE_DROP_PACKET_RECORD, |
| 513 | (uint8_t *)skb->data, cdf_nbuf_len(skb))); |
| 514 | if (cdf_nbuf_len(skb) > CDF_DP_TRACE_RECORD_SIZE) |
| 515 | DPTRACE(cdf_dp_trace(skb, CDF_DP_TRACE_DROP_PACKET_RECORD, |
| 516 | (uint8_t *)&skb->data[CDF_DP_TRACE_RECORD_SIZE], |
| 517 | (cdf_nbuf_len(skb)-CDF_DP_TRACE_RECORD_SIZE))); |
| 518 | |
| 519 | ++pAdapter->stats.tx_dropped; |
| 520 | ++pAdapter->hdd_stats.hddTxRxStats.txXmitDropped; |
| 521 | ++pAdapter->hdd_stats.hddTxRxStats.txXmitDroppedAC[ac]; |
| 522 | kfree_skb(skb); |
| 523 | return NETDEV_TX_OK; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * hdd_ibss_get_sta_id() - Get the StationID using the Peer Mac address |
| 528 | * @pHddStaCtx: pointer to HDD Station Context |
| 529 | * @pMacAddress: pointer to Peer Mac address |
| 530 | * @staID: pointer to returned Station Index |
| 531 | * |
| 532 | * Return: CDF_STATUS_SUCCESS/CDF_STATUS_E_FAILURE |
| 533 | */ |
| 534 | |
| 535 | CDF_STATUS hdd_ibss_get_sta_id(hdd_station_ctx_t *pHddStaCtx, |
| 536 | struct cdf_mac_addr *pMacAddress, uint8_t *staId) |
| 537 | { |
| 538 | uint8_t idx; |
| 539 | |
| 540 | for (idx = 0; idx < MAX_IBSS_PEERS; idx++) { |
| 541 | if (cdf_mem_compare(&pHddStaCtx->conn_info.peerMacAddress[idx], |
| 542 | pMacAddress, CDF_MAC_ADDR_SIZE)) { |
| 543 | *staId = pHddStaCtx->conn_info.staId[idx]; |
| 544 | return CDF_STATUS_SUCCESS; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | return CDF_STATUS_E_FAILURE; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * __hdd_tx_timeout() - TX timeout handler |
| 553 | * @dev: pointer to network device |
| 554 | * |
| 555 | * This function is registered as a netdev ndo_tx_timeout method, and |
| 556 | * is invoked by the kernel if the driver takes too long to transmit a |
| 557 | * frame. |
| 558 | * |
| 559 | * Return: None |
| 560 | */ |
| 561 | static void __hdd_tx_timeout(struct net_device *dev) |
| 562 | { |
| 563 | struct netdev_queue *txq; |
| 564 | int i = 0; |
| 565 | |
| 566 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_ERROR, |
| 567 | "%s: Transmission timeout occurred jiffies %lu trans_start %lu", |
| 568 | __func__, jiffies, dev->trans_start); |
| 569 | DPTRACE(cdf_dp_trace(NULL, CDF_DP_TRACE_HDD_TX_TIMEOUT, |
| 570 | NULL, 0)); |
| 571 | |
| 572 | /* Getting here implies we disabled the TX queues for too |
| 573 | * long. Queues are disabled either because of disassociation |
| 574 | * or low resource scenarios. In case of disassociation it is |
| 575 | * ok to ignore this. But if associated, we have do possible |
| 576 | * recovery here |
| 577 | */ |
| 578 | |
| 579 | for (i = 0; i < NUM_TX_QUEUES; i++) { |
| 580 | txq = netdev_get_tx_queue(dev, i); |
| 581 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_INFO, |
| 582 | "Queue%d status: %d txq->trans_start %lu", |
| 583 | i, netif_tx_queue_stopped(txq), txq->trans_start); |
| 584 | } |
| 585 | |
| 586 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_INFO, |
| 587 | "carrier state: %d", netif_carrier_ok(dev)); |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * hdd_tx_timeout() - Wrapper function to protect __hdd_tx_timeout from SSR |
| 592 | * @dev: pointer to net_device structure |
| 593 | * |
| 594 | * Function called by OS if there is any timeout during transmission. |
| 595 | * Since HDD simply enqueues packet and returns control to OS right away, |
| 596 | * this would never be invoked |
| 597 | * |
| 598 | * Return: none |
| 599 | */ |
| 600 | void hdd_tx_timeout(struct net_device *dev) |
| 601 | { |
| 602 | cds_ssr_protect(__func__); |
| 603 | __hdd_tx_timeout(dev); |
| 604 | cds_ssr_unprotect(__func__); |
| 605 | } |
| 606 | |
| 607 | /** |
| 608 | * @hdd_init_tx_rx() - Initialize Tx/RX module |
| 609 | * @pAdapter: pointer to adapter context |
| 610 | * |
| 611 | * Return: CDF_STATUS_E_FAILURE if any errors encountered, |
| 612 | * CDF_STATUS_SUCCESS otherwise |
| 613 | */ |
| 614 | CDF_STATUS hdd_init_tx_rx(hdd_adapter_t *pAdapter) |
| 615 | { |
| 616 | CDF_STATUS status = CDF_STATUS_SUCCESS; |
| 617 | |
| 618 | if (NULL == pAdapter) { |
| 619 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_ERROR, |
| 620 | FL("pAdapter is NULL")); |
| 621 | CDF_ASSERT(0); |
| 622 | return CDF_STATUS_E_FAILURE; |
| 623 | } |
| 624 | |
| 625 | return status; |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * @hdd_deinit_tx_rx() - Deinitialize Tx/RX module |
| 630 | * @pAdapter: pointer to adapter context |
| 631 | * |
| 632 | * Return: CDF_STATUS_E_FAILURE if any errors encountered, |
| 633 | * CDF_STATUS_SUCCESS otherwise |
| 634 | */ |
| 635 | CDF_STATUS hdd_deinit_tx_rx(hdd_adapter_t *pAdapter) |
| 636 | { |
| 637 | CDF_STATUS status = CDF_STATUS_SUCCESS; |
| 638 | |
| 639 | if (NULL == pAdapter) { |
| 640 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_ERROR, |
| 641 | FL("pAdapter is NULL")); |
| 642 | CDF_ASSERT(0); |
| 643 | return CDF_STATUS_E_FAILURE; |
| 644 | } |
| 645 | |
| 646 | return status; |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * hdd_rx_packet_cbk() - Receive packet handler |
| 651 | * @cds_context: pointer to CDS context |
| 652 | * @rxBuf: pointer to rx cdf_nbuf |
| 653 | * @staId: Station Id |
| 654 | * |
| 655 | * Receive callback registered with TL. TL will call this to notify |
| 656 | * the HDD when one or more packets were received for a registered |
| 657 | * STA. |
| 658 | * |
| 659 | * Return: CDF_STATUS_E_FAILURE if any errors encountered, |
| 660 | * CDF_STATUS_SUCCESS otherwise |
| 661 | */ |
| 662 | CDF_STATUS hdd_rx_packet_cbk(void *cds_context, cdf_nbuf_t rxBuf, uint8_t staId) |
| 663 | { |
| 664 | hdd_adapter_t *pAdapter = NULL; |
| 665 | hdd_context_t *pHddCtx = NULL; |
| 666 | int rxstat; |
| 667 | struct sk_buff *skb = NULL; |
| 668 | #ifdef QCA_PKT_PROTO_TRACE |
| 669 | uint8_t proto_type; |
| 670 | #endif /* QCA_PKT_PROTO_TRACE */ |
| 671 | hdd_station_ctx_t *pHddStaCtx = NULL; |
| 672 | unsigned int cpu_index; |
| 673 | |
| 674 | /* Sanity check on inputs */ |
| 675 | if ((NULL == cds_context) || (NULL == rxBuf)) { |
| 676 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_ERROR, |
| 677 | "%s: Null params being passed", __func__); |
| 678 | return CDF_STATUS_E_FAILURE; |
| 679 | } |
| 680 | |
| 681 | pHddCtx = cds_get_context(CDF_MODULE_ID_HDD); |
| 682 | if (NULL == pHddCtx) { |
| 683 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_ERROR, |
| 684 | "%s: HDD context is Null", __func__); |
| 685 | return CDF_STATUS_E_FAILURE; |
| 686 | } |
| 687 | |
| 688 | pAdapter = pHddCtx->sta_to_adapter[staId]; |
| 689 | if ((NULL == pAdapter) || (WLAN_HDD_ADAPTER_MAGIC != pAdapter->magic)) { |
| 690 | hddLog(LOGE, |
| 691 | FL("invalid adapter %p or adapter has invalid magic"), |
| 692 | pAdapter); |
| 693 | return CDF_STATUS_E_FAILURE; |
| 694 | } |
| 695 | cpu_index = wlan_hdd_get_cpu(); |
| 696 | |
| 697 | skb = (struct sk_buff *)rxBuf; |
| 698 | |
| 699 | if (WLAN_HDD_ADAPTER_MAGIC != pAdapter->magic) { |
| 700 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_FATAL, |
| 701 | "Magic cookie(%x) for adapter sanity verification is invalid", |
| 702 | pAdapter->magic); |
| 703 | return CDF_STATUS_E_FAILURE; |
| 704 | } |
| 705 | |
| 706 | pHddStaCtx = WLAN_HDD_GET_STATION_CTX_PTR(pAdapter); |
| 707 | if ((pHddStaCtx->conn_info.proxyARPService) && |
| 708 | cfg80211_is_gratuitous_arp_unsolicited_na(skb)) { |
| 709 | ++pAdapter->hdd_stats.hddTxRxStats.rxDropped[cpu_index]; |
| 710 | CDF_TRACE(CDF_MODULE_ID_HDD_DATA, CDF_TRACE_LEVEL_INFO, |
| 711 | "%s: Dropping HS 2.0 Gratuitous ARP or Unsolicited NA", |
| 712 | __func__); |
| 713 | /* Remove SKB from internal tracking table before submitting |
| 714 | * it to stack |
| 715 | */ |
| 716 | cdf_nbuf_free(skb); |
| 717 | return CDF_STATUS_SUCCESS; |
| 718 | } |
| 719 | |
| 720 | wlan_hdd_log_eapol(skb, WIFI_EVENT_DRIVER_EAPOL_FRAME_RECEIVED); |
| 721 | |
| 722 | #ifdef QCA_PKT_PROTO_TRACE |
| 723 | if ((pHddCtx->config->gEnableDebugLog & CDS_PKT_TRAC_TYPE_EAPOL) || |
| 724 | (pHddCtx->config->gEnableDebugLog & CDS_PKT_TRAC_TYPE_DHCP)) { |
| 725 | proto_type = cds_pkt_get_proto_type(skb, |
| 726 | pHddCtx->config-> |
| 727 | gEnableDebugLog, 0); |
| 728 | if (CDS_PKT_TRAC_TYPE_EAPOL & proto_type) { |
| 729 | cds_pkt_trace_buf_update("ST:R:EPL"); |
| 730 | } else if (CDS_PKT_TRAC_TYPE_DHCP & proto_type) { |
| 731 | cds_pkt_trace_buf_update("ST:R:DHC"); |
| 732 | } |
| 733 | } |
| 734 | #endif /* QCA_PKT_PROTO_TRACE */ |
| 735 | |
| 736 | skb->dev = pAdapter->dev; |
| 737 | skb->protocol = eth_type_trans(skb, skb->dev); |
| 738 | ++pAdapter->hdd_stats.hddTxRxStats.rxPackets[cpu_index]; |
| 739 | ++pAdapter->stats.rx_packets; |
| 740 | pAdapter->stats.rx_bytes += skb->len; |
| 741 | #ifdef WLAN_FEATURE_HOLD_RX_WAKELOCK |
| 742 | cdf_wake_lock_timeout_acquire(&pHddCtx->rx_wake_lock, |
| 743 | HDD_WAKE_LOCK_DURATION, |
| 744 | WIFI_POWER_EVENT_WAKELOCK_HOLD_RX); |
| 745 | #endif |
| 746 | |
| 747 | /* Remove SKB from internal tracking table before submitting |
| 748 | * it to stack |
| 749 | */ |
| 750 | cdf_net_buf_debug_release_skb(rxBuf); |
| 751 | |
| 752 | if (HDD_LRO_NO_RX == |
| 753 | hdd_lro_rx(pHddCtx, pAdapter, skb)) { |
| 754 | if (hdd_napi_enabled(HDD_NAPI_ANY)) |
| 755 | rxstat = netif_receive_skb(skb); |
| 756 | else |
| 757 | rxstat = netif_rx_ni(skb); |
| 758 | |
| 759 | if (NET_RX_SUCCESS == rxstat) |
| 760 | ++pAdapter->hdd_stats.hddTxRxStats. |
| 761 | rxDelivered[cpu_index]; |
| 762 | else |
| 763 | ++pAdapter->hdd_stats.hddTxRxStats. |
| 764 | rxRefused[cpu_index]; |
| 765 | |
| 766 | } else { |
| 767 | ++pAdapter->hdd_stats.hddTxRxStats. |
| 768 | rxDelivered[cpu_index]; |
| 769 | } |
| 770 | |
| 771 | pAdapter->dev->last_rx = jiffies; |
| 772 | |
| 773 | return CDF_STATUS_SUCCESS; |
| 774 | } |
| 775 | |
| 776 | #ifdef FEATURE_WLAN_DIAG_SUPPORT |
| 777 | |
| 778 | /** |
| 779 | * wlan_hdd_get_eapol_params() - Function to extract EAPOL params |
| 780 | * @skb: sbb data |
| 781 | * @eapol_params: Pointer to hold the parsed EAPOL params |
| 782 | * @event_type: Event type to indicate Tx/Rx |
| 783 | * |
| 784 | * This function parses the input skb data and return the EAPOL parameters if |
| 785 | * the packet is an eapol packet. |
| 786 | * |
| 787 | * Return: -EINVAL if the packet is not an EAPOL packet and 0 on success |
| 788 | * |
| 789 | */ |
| 790 | static int wlan_hdd_get_eapol_params(struct sk_buff *skb, |
| 791 | struct host_event_wlan_eapol *eapol_params, |
| 792 | uint8_t event_type) |
| 793 | { |
| 794 | bool ret; |
| 795 | uint8_t packet_type; |
| 796 | |
| 797 | ret = wlan_hdd_is_eapol(skb); |
| 798 | |
| 799 | if (!ret) |
| 800 | return -EINVAL; |
| 801 | |
| 802 | packet_type = (uint8_t)(*(uint8_t *) |
| 803 | (skb->data + HDD_EAPOL_PACKET_TYPE_OFFSET)); |
| 804 | |
| 805 | eapol_params->eapol_packet_type = packet_type; |
| 806 | eapol_params->eapol_key_info = (uint16_t)(*(uint16_t *) |
| 807 | (skb->data + HDD_EAPOL_KEY_INFO_OFFSET)); |
| 808 | eapol_params->event_sub_type = event_type; |
| 809 | eapol_params->eapol_rate = 0;/* As of now, zero */ |
| 810 | |
| 811 | cdf_mem_copy(eapol_params->dest_addr, |
| 812 | (skb->data + HDD_EAPOL_DEST_MAC_OFFSET), |
| 813 | sizeof(eapol_params->dest_addr)); |
| 814 | cdf_mem_copy(eapol_params->src_addr, |
| 815 | (skb->data + HDD_EAPOL_SRC_MAC_OFFSET), |
| 816 | sizeof(eapol_params->src_addr)); |
| 817 | return 0; |
| 818 | } |
| 819 | |
| 820 | /** |
| 821 | * wlan_hdd_event_eapol_log() - Function to log EAPOL events |
| 822 | * @eapol_params: Structure containing EAPOL params |
| 823 | * |
| 824 | * This function logs the parsed EAPOL params |
| 825 | * |
| 826 | * Return: None |
| 827 | * |
| 828 | */ |
| 829 | static void wlan_hdd_event_eapol_log(struct host_event_wlan_eapol eapol_params) |
| 830 | { |
| 831 | WLAN_HOST_DIAG_EVENT_DEF(wlan_diag_event, struct host_event_wlan_eapol); |
| 832 | |
| 833 | wlan_diag_event.event_sub_type = eapol_params.event_sub_type; |
| 834 | wlan_diag_event.eapol_packet_type = eapol_params.eapol_packet_type; |
| 835 | wlan_diag_event.eapol_key_info = eapol_params.eapol_key_info; |
| 836 | wlan_diag_event.eapol_rate = eapol_params.eapol_rate; |
| 837 | cdf_mem_copy(wlan_diag_event.dest_addr, |
| 838 | eapol_params.dest_addr, |
| 839 | sizeof(wlan_diag_event.dest_addr)); |
| 840 | cdf_mem_copy(wlan_diag_event.src_addr, |
| 841 | eapol_params.src_addr, |
| 842 | sizeof(wlan_diag_event.src_addr)); |
| 843 | |
| 844 | WLAN_HOST_DIAG_EVENT_REPORT(&wlan_diag_event, EVENT_WLAN_EAPOL); |
| 845 | } |
| 846 | |
| 847 | /** |
| 848 | * wlan_hdd_log_eapol() - Logs the EAPOL parameters of a packet |
| 849 | * @skb: skb data |
| 850 | * @event_type: One of enum wifi_connectivity_events to indicate Tx/Rx |
| 851 | * |
| 852 | * This function parses the input skb data to get the EAPOL params and log |
| 853 | * them to user space, if the packet is EAPOL |
| 854 | * |
| 855 | * Return: None |
| 856 | * |
| 857 | */ |
| 858 | void wlan_hdd_log_eapol(struct sk_buff *skb, |
| 859 | uint8_t event_type) |
| 860 | { |
| 861 | int ret; |
| 862 | struct host_event_wlan_eapol eapol_params; |
| 863 | |
| 864 | ret = wlan_hdd_get_eapol_params(skb, &eapol_params, event_type); |
| 865 | if (!ret) |
| 866 | wlan_hdd_event_eapol_log(eapol_params); |
| 867 | } |
| 868 | #endif /* FEATURE_WLAN_DIAG_SUPPORT */ |
| 869 | |
| 870 | /** |
| 871 | * hdd_reason_type_to_string() - return string conversion of reason type |
| 872 | * @reason: reason type |
| 873 | * |
| 874 | * This utility function helps log string conversion of reason type. |
| 875 | * |
| 876 | * Return: string conversion of device mode, if match found; |
| 877 | * "Unknown" otherwise. |
| 878 | */ |
| 879 | const char *hdd_reason_type_to_string(enum netif_reason_type reason) |
| 880 | { |
| 881 | switch (reason) { |
| 882 | CASE_RETURN_STRING(WLAN_CONTROL_PATH); |
| 883 | CASE_RETURN_STRING(WLAN_DATA_FLOW_CONTROL); |
| 884 | CASE_RETURN_STRING(WLAN_FW_PAUSE); |
| 885 | CASE_RETURN_STRING(WLAN_TX_ABORT); |
| 886 | CASE_RETURN_STRING(WLAN_VDEV_STOP); |
| 887 | CASE_RETURN_STRING(WLAN_PEER_UNAUTHORISED); |
| 888 | CASE_RETURN_STRING(WLAN_THERMAL_MITIGATION); |
| 889 | default: |
| 890 | return "Unknown"; |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | /** |
| 895 | * hdd_action_type_to_string() - return string conversion of action type |
| 896 | * @action: action type |
| 897 | * |
| 898 | * This utility function helps log string conversion of action_type. |
| 899 | * |
| 900 | * Return: string conversion of device mode, if match found; |
| 901 | * "Unknown" otherwise. |
| 902 | */ |
| 903 | const char *hdd_action_type_to_string(enum netif_action_type action) |
| 904 | { |
| 905 | |
| 906 | switch (action) { |
| 907 | CASE_RETURN_STRING(WLAN_STOP_ALL_NETIF_QUEUE); |
| 908 | CASE_RETURN_STRING(WLAN_START_ALL_NETIF_QUEUE); |
| 909 | CASE_RETURN_STRING(WLAN_WAKE_ALL_NETIF_QUEUE); |
| 910 | CASE_RETURN_STRING(WLAN_STOP_ALL_NETIF_QUEUE_N_CARRIER); |
| 911 | CASE_RETURN_STRING(WLAN_START_ALL_NETIF_QUEUE_N_CARRIER); |
| 912 | CASE_RETURN_STRING(WLAN_NETIF_TX_DISABLE); |
| 913 | CASE_RETURN_STRING(WLAN_NETIF_TX_DISABLE_N_CARRIER); |
| 914 | CASE_RETURN_STRING(WLAN_NETIF_CARRIER_ON); |
| 915 | CASE_RETURN_STRING(WLAN_NETIF_CARRIER_OFF); |
| 916 | default: |
| 917 | return "Unknown"; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | /** |
| 922 | * wlan_hdd_update_queue_oper_stats - update queue operation statistics |
| 923 | * @adapter: adapter handle |
| 924 | * @action: action type |
| 925 | * @reason: reason type |
| 926 | */ |
| 927 | static void wlan_hdd_update_queue_oper_stats(hdd_adapter_t *adapter, |
| 928 | enum netif_action_type action, enum netif_reason_type reason) |
| 929 | { |
| 930 | switch (action) { |
| 931 | case WLAN_STOP_ALL_NETIF_QUEUE: |
| 932 | case WLAN_STOP_ALL_NETIF_QUEUE_N_CARRIER: |
| 933 | case WLAN_NETIF_TX_DISABLE: |
| 934 | case WLAN_NETIF_TX_DISABLE_N_CARRIER: |
| 935 | adapter->queue_oper_stats[reason].pause_count++; |
| 936 | break; |
| 937 | case WLAN_START_ALL_NETIF_QUEUE: |
| 938 | case WLAN_WAKE_ALL_NETIF_QUEUE: |
| 939 | case WLAN_START_ALL_NETIF_QUEUE_N_CARRIER: |
| 940 | adapter->queue_oper_stats[reason].unpause_count++; |
| 941 | break; |
| 942 | default: |
| 943 | break; |
| 944 | } |
| 945 | |
| 946 | return; |
| 947 | } |
| 948 | |
| 949 | /** |
| 950 | * wlan_hdd_netif_queue_control() - Use for netif_queue related actions |
| 951 | * @adapter: adapter handle |
| 952 | * @action: action type |
| 953 | * @reason: reason type |
| 954 | * |
| 955 | * This is single function which is used for netif_queue related |
| 956 | * actions like start/stop of network queues and on/off carrier |
| 957 | * option. |
| 958 | * |
| 959 | * Return: None |
| 960 | */ |
| 961 | void wlan_hdd_netif_queue_control(hdd_adapter_t *adapter, |
| 962 | enum netif_action_type action, enum netif_reason_type reason) |
| 963 | { |
| 964 | |
| 965 | if ((!adapter) || (WLAN_HDD_ADAPTER_MAGIC != adapter->magic) || |
| 966 | (!adapter->dev)) { |
| 967 | hdd_err("adapter is invalid"); |
| 968 | return; |
| 969 | } |
| 970 | |
| 971 | switch (action) { |
| 972 | |
| 973 | case WLAN_NETIF_CARRIER_ON: |
| 974 | netif_carrier_on(adapter->dev); |
| 975 | break; |
| 976 | |
| 977 | case WLAN_NETIF_CARRIER_OFF: |
| 978 | netif_carrier_off(adapter->dev); |
| 979 | break; |
| 980 | |
| 981 | case WLAN_STOP_ALL_NETIF_QUEUE: |
| 982 | spin_lock_bh(&adapter->pause_map_lock); |
| 983 | if (!adapter->pause_map) |
| 984 | netif_tx_stop_all_queues(adapter->dev); |
| 985 | adapter->pause_map |= (1 << reason); |
| 986 | spin_unlock_bh(&adapter->pause_map_lock); |
| 987 | break; |
| 988 | |
| 989 | case WLAN_START_ALL_NETIF_QUEUE: |
| 990 | spin_lock_bh(&adapter->pause_map_lock); |
| 991 | adapter->pause_map &= ~(1 << reason); |
| 992 | if (!adapter->pause_map) |
| 993 | netif_tx_start_all_queues(adapter->dev); |
| 994 | spin_unlock_bh(&adapter->pause_map_lock); |
| 995 | break; |
| 996 | |
| 997 | case WLAN_WAKE_ALL_NETIF_QUEUE: |
| 998 | spin_lock_bh(&adapter->pause_map_lock); |
| 999 | adapter->pause_map &= ~(1 << reason); |
| 1000 | if (!adapter->pause_map) |
| 1001 | netif_tx_wake_all_queues(adapter->dev); |
| 1002 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1003 | break; |
| 1004 | |
| 1005 | case WLAN_STOP_ALL_NETIF_QUEUE_N_CARRIER: |
| 1006 | spin_lock_bh(&adapter->pause_map_lock); |
| 1007 | if (!adapter->pause_map) |
| 1008 | netif_tx_stop_all_queues(adapter->dev); |
| 1009 | adapter->pause_map |= (1 << reason); |
| 1010 | netif_carrier_off(adapter->dev); |
| 1011 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1012 | break; |
| 1013 | |
| 1014 | case WLAN_START_ALL_NETIF_QUEUE_N_CARRIER: |
| 1015 | spin_lock_bh(&adapter->pause_map_lock); |
| 1016 | netif_carrier_on(adapter->dev); |
| 1017 | adapter->pause_map &= ~(1 << reason); |
| 1018 | if (!adapter->pause_map) |
| 1019 | netif_tx_start_all_queues(adapter->dev); |
| 1020 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1021 | break; |
| 1022 | |
| 1023 | case WLAN_NETIF_TX_DISABLE: |
| 1024 | spin_lock_bh(&adapter->pause_map_lock); |
| 1025 | if (!adapter->pause_map) |
| 1026 | netif_tx_disable(adapter->dev); |
| 1027 | adapter->pause_map |= (1 << reason); |
| 1028 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1029 | break; |
| 1030 | |
| 1031 | case WLAN_NETIF_TX_DISABLE_N_CARRIER: |
| 1032 | spin_lock_bh(&adapter->pause_map_lock); |
| 1033 | if (!adapter->pause_map) |
| 1034 | netif_tx_disable(adapter->dev); |
| 1035 | adapter->pause_map |= (1 << reason); |
| 1036 | netif_carrier_off(adapter->dev); |
| 1037 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1038 | break; |
| 1039 | |
| 1040 | default: |
| 1041 | hdd_err("unsupported action %d", action); |
| 1042 | } |
| 1043 | |
| 1044 | spin_lock_bh(&adapter->pause_map_lock); |
| 1045 | if (adapter->pause_map & (1 << WLAN_PEER_UNAUTHORISED)) |
| 1046 | wlan_hdd_process_peer_unauthorised_pause(adapter); |
| 1047 | spin_unlock_bh(&adapter->pause_map_lock); |
| 1048 | |
| 1049 | |
| 1050 | wlan_hdd_update_queue_oper_stats(adapter, action, reason); |
| 1051 | |
| 1052 | adapter->queue_oper_history[adapter->history_index].time = |
| 1053 | cdf_system_ticks(); |
| 1054 | adapter->queue_oper_history[adapter->history_index].netif_action = |
| 1055 | action; |
| 1056 | adapter->queue_oper_history[adapter->history_index].netif_reason = |
| 1057 | reason; |
| 1058 | adapter->queue_oper_history[adapter->history_index].pause_map = |
| 1059 | adapter->pause_map; |
| 1060 | if (++adapter->history_index == WLAN_HDD_MAX_HISTORY_ENTRY) |
| 1061 | adapter->history_index = 0; |
| 1062 | |
| 1063 | return; |
| 1064 | } |
| 1065 | |